Produits et services

Computer programs, downloadable; integrated circuit cards; downloadable mobile application software; inverters [electricity]; electric installations for the remote control of industrial operations; charging stations for electric vehicles; batteries, electric; batteries, electric, for vehicles; battery chargers; mobile power supply in the nature of rechargeable batteries. Rebuilding machines that have been worn or partially destroyed; interference suppression in electrical apparatus; installation, maintenance and repair of computer hardware; machinery installation, maintenance and repair; vehicle maintenance; charging of electric vehicles; vehicle cleaning; vehicle battery charging; vehicle breakdown repair services; vehicle battery change services.

Abrégé

The present application relates to the technical field of batteries, and to a non-aqueous electrolyte, a secondary battery and an electrical apparatus. The non-aqueous electrolyte comprises a cyclic sulfate additive and a phosphate or isocyanate additive. The present application further relates to a secondary battery comprising the non-aqueous electrolyte, and an electrical apparatus comprising the secondary battery.

Classes IPC  ?

• H01M 10/0567 - Matériaux liquides caracterisés par les additifs
• B60L 50/64 - Détails de construction des batteries spécialement adaptées aux véhicules électriques
• H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium

Abrégé

A positioning apparatus includes a positioning platform and a positioning mechanism, where the positioning platform is configured to support the insulator, and the positioning mechanism is configured to abut against at least one edge of the insulator to position the insulator. The insulator is positioned by abutting the positioning mechanism against at least one edge of the insulator, improving the positioning accuracy.

Classes IPC  ?

• H01M 10/04 - Structure ou fabrication en général

Abrégé

A box body comprises an end plate, a face plate, and a medium flow channel, and the face plate is connected to one end of the end plate. The medium flow channel is used to accommodate a heat exchange medium. The medium flow channel is at least partially located on the end plate. The medium flow channel is provided with a medium inlet and a medium outlet, and the medium inlet and/or the medium outlet is arranged on the face plate. The box body is provided with the medium flow channel, and the medium flow channel is used for the heat exchange medium to pass through to carry out thermal management on a device in the box body.

Classes IPC  ?

• H01M 10/6556 - Composants solides comprenant des canaux d'écoulement ou des tubes pour un échange de chaleur
• B60L 50/60 - Propulsion électrique par source d'énergie intérieure au véhicule utilisant de la puissance de propulsion fournie par des batteries ou des piles à combustible utilisant de l'énergie fournie par des batteries
• B60R 16/033 - Circuits électriques ou circuits de fluides spécialement adaptés aux véhicules et non prévus ailleursAgencement des éléments des circuits électriques ou des circuits de fluides spécialement adapté aux véhicules et non prévu ailleurs électriques pour l'alimentation des sous-systèmes du véhicule en énergie électrique caractérisé par l'utilisation de cellules électriques ou de batteries
• H01M 10/625 - Véhicules
• H01M 10/6568 - Liquides caractérisés par des circuits d'écoulement. p. ex. boucles, situés à l'extérieur des éléments ou des boîtiers des éléments
• H01M 50/249 - MonturesBoîtiers secondaires ou cadresBâtis, modules ou blocsDispositifs de suspensionAmortisseursDispositifs de transport ou de manutentionSupports spécialement adaptés aux aéronefs ou aux véhicules, p. ex. aux automobiles ou aux trains
• H01M 50/262 - MonturesBoîtiers secondaires ou cadresBâtis, modules ou blocsDispositifs de suspensionAmortisseursDispositifs de transport ou de manutentionSupports avec des moyens de fixation, p. ex. des serrures

Abrégé

Provided are a positive electrode active material and a preparation method therefor, a battery cell, and an electric device. The positive electrode active material includes a lithium-containing phosphate, where an X-ray diffraction pattern of the positive electrode active material tested in a fully charged state satisfies: there is a (311) crystal plane peak in a range of 35° to 36° and a (011) crystal plane peak in a range of 20° to 21°, and the ratio of a peak intensity I311 of the (311) crystal plane peak to a peak intensity I011 of the (011) crystal plane peak satisfies I311/I011≥0.008. The positive active material can improve the cycle performance of a battery.

Classes IPC  ?

• C01B 25/37 - Phosphates des métaux lourds
• H01M 10/052 - Accumulateurs au lithium

Abrégé

A posture adjustment method includes: controlling a battery swapping device to move to a projection area on the ground of a to-be-swapped battery of target equipment; acquiring posture information of the to-be-swapped battery via a ranging sensor on the battery swapping device; and adjusting a posture of the battery swapping device based on the posture information of the to-be-swapped battery until the posture of the battery swapping device matches the posture information of the to-be-swapped battery. A posture adjustment apparatus, a control device, and a storage medium.

Classes IPC  ?

• B60L 53/80 - Remplacement d'éléments d’emmagasinage d'énergie, p. ex. batteries amovibles

Abrégé

A battery cell (20), a battery apparatus (100), and an electrical apparatus (1000). The battery cell comprises: a housing assembly (21); an electrode assembly (22), which is arranged within the housing assembly and comprises a first electrode sheet (221), a second electrode sheet (222), and a separator (223), the separator being arranged between the first electrode sheet and the second electrode sheet, the electrode assembly comprising a winding axial direction, the electrode assembly being a jelly-roll structure wound around the winding axial direction and comprising a plurality of wound layers perpendicular to the winding axial direction, and each wound layer comprising the first electrode sheet, the separator, and the second electrode sheet which are stacked; and a buffer member (23), which is provided within at least one wound layer. The first electrode sheet and/or the second electrode sheet are/is provided with an accommodating recess (224), and a portion of the buffer member is located within the accommodating recess.

Classes IPC  ?

• H01M 10/0587 - Structure ou fabrication d'accumulateurs ayant uniquement des éléments de structure enroulés, c.-à-d. des électrodes positives enroulées, des électrodes négatives enroulées et des séparateurs enroulés
• H01M 10/04 - Structure ou fabrication en général
• H01M 10/02 - Détails
• H01M 10/052 - Accumulateurs au lithium
• H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium

Abrégé

The present application relates to the technical field of batteries, and discloses a battery apparatus and an electrical apparatus. The battery apparatus comprises a plurality of battery cells, a busbar component, and a circuit board. Each battery cell comprises a housing and electrode terminals, the electrode terminals being provided on the housing. The busbar component is connected to the electrode terminals, and is used to electrically connect the plurality of battery cells. The circuit board is disposed on a first outer end surface of each housing. The circuit board comprises a main body portion and a sampling portion. One end of the sampling portion is connected to the main body portion, and the other end of the sampling portion is connected to the busbar component or the battery cells. At least a portion of the main body portion and at least a portion of the busbar component are stacked in a first direction, the first direction intersecting the first outer end surfaces; and/or, at least a portion of the main body portion and at least a portion of the electrode terminals are stacked in the first direction, the first direction intersecting the first outer end surfaces. The battery apparatus has high energy-replenishment efficiency.

Classes IPC  ?

• H01M 50/507 - Interconnecteurs pour connecter les bornes des batteries adjacentesInterconnecteurs pour connecter les cellules en dehors d'un boîtier de batterie comprenant un arrangement de plusieurs barres omnibus réunies dans une structure de conteneur, p. ex. modules de barres omnibus

Abrégé

Disclosed in the present application are a battery cell, a battery device and an electric device. The battery cell comprises a casing and an electrode assembly. The casing has a first wall and a second wall opposite each other in a first direction, the first wall having a liquid injection hole, which is configured to inject an electrolyte into the casing. The electrode assembly is disposed inside the casing. A weakened portion and a pressure relief region are formed on the second wall, and the second wall is configured to crack along the weakened portion to open the pressure relief region; and on the same projection plane perpendicular to the first direction, the projection of the liquid injection hole and the projection of the weakened portion do not overlap with each other. The technical solution provided by the present application can improve the manufacturing efficiency of the battery device.

Classes IPC  ?

• H01M 50/30 - Aménagements pour faciliter l’échappement des gaz
• H01M 50/342 - Aménagements non refermables
• H01M 50/60 - Dispositions ou procédés pour le remplissage ou la mise à niveauDispositions ou procédés pour le drainage des liquides des boîtiers
• H01M 50/627 - Ouvertures de remplissage

Abrégé

Embodiments of the present application provide a battery cell, a battery apparatus, and an electric device. The battery cell comprises a casing, a first electrode terminal, an electrode assembly and a separator. The casing comprises a wall portion. The first electrode terminal is disposed on the wall portion. The electrode assembly is accommodated in the casing, and comprises a first tab, and the first tab is electrically connected to the first electrode terminal. At least a part of the separator is disposed between the first electrode terminal and the wall portion. A resistance value of the separator is greater than or equal to 1 Ω, and a melting point of the separator is greater than or equal to 450°.

Classes IPC  ?

• H01M 50/50 - Connexions conductrices de courant pour les cellules ou les batteries
• H01M 50/543 - Bornes

Abrégé

The present application is applicable to the technical field of power batteries, and provides a battery cell (100), a related apparatus and system, and a charging network. The battery cell (100) comprises electrode sheets (11), each electrode sheet (11) comprising: a current collector (111), the current collector (111) comprising two end faces (1111a) and two side faces (1111b), and a protruding structure (1112) being formed on an end face (1111a); and an insulating layer (112), which is provided on the current collector (111), the insulating layer (112) at least covering said end face (1111a) and covering the protruding structure (1112). In the battery cell (100) provided in the embodiments of the present application, the protruding structure (1112) is formed on the end face (1111a) of the current collector (111), and the protruding structure (1112) easily pierces a separator (12) adjacent to the electrode sheet (11) and causes a short circuit between two adjacent electrode sheets (11), thereby causing a short circuit of the battery cell (100). Accordingly, the insulating layer (112) is provided. The insulating layer (112) covers the protruding structure (1112), and the insulating layer (112) wraps the protruding structure (1112) and fixes the position of the protruding structure (1112), so as to reduce the risk of the protruding structure (1112) piercing the adjacent separator (12), thereby reducing the risk of a short circuit between the adjacent electrode sheets (11), and improving the safety and stability of the battery cell (100).

Classes IPC  ?

• H01M 4/78 - Formes autres que planes ou cylindriques, p. ex. hélicoïdales
• H01M 10/42 - Procédés ou dispositions pour assurer le fonctionnement ou l'entretien des éléments secondaires ou des demi-éléments secondaires
• H01M 10/058 - Structure ou fabrication

Abrégé

The present application provides a tab adhesive tape application device. The tab adhesive tape application device comprises an adhesive tape support member and cutting assemblies. The adhesive tape support member has two bearing surfaces arranged opposite to each other. The cutting assemblies are respectively arranged at two opposite sides of the adhesive tape support member. Each cutting assembly comprises a body, an annular cutting edge, and a plurality of air suction holes; the body has a locating plane facing a corresponding bearing surface; the annular cutting edge is arranged on the locating plane; the annular cutting edge protrudes from the locating plane; air inlets of the air suction holes are formed at the locating plane; and the annular cutting edge surrounds the air suction holes. The tab adhesive tape application device of the present application can ensure accurate alignment and good overlap between two adhesive tape segments adhered to the front surface and the back surface of a welding position, thereby effectively improving the adhesive tape application efficiency.

Classes IPC  ?

• H01M 10/04 - Structure ou fabrication en général
• H01M 50/536 - Connexions d’électrodes dans un boîtier de batterie caractérisées par le procédé de fixation des conducteurs aux électrodes, p. ex. soudage

Abrégé

A lithium-ion battery, a charging method, and a lithium-ion battery system. The lithium-ion battery comprises a housing (40), a battery cell (30), and an electrolyte. The battery cell (30) comprises a positive electrode sheet (10), a negative electrode sheet (20), and a separator; a negative electrode active material comprises graphite; a positive electrode active material comprises a lithium-containing phosphate and a carbon layer located on the surface of the lithium-containing phosphate; the thickness of a single-sided active material layer of the negative electrode sheet is 50-95 μm, the thickness of a single-sided active material layer of the positive electrode sheet is 60-105 μm, the Dv50 of the negative electrode active material is 10-30 μm, and the graphitization degree of the negative electrode active material is greater than or equal to 90%; and the capacity L of the lithium-ion battery is greater than or equal to 200 Ah, and the actual gas storage space of the lithium-ion battery is greater than or equal to 48 cm3. Under normal use conditions, an explosion-proof valve (43) of the lithium-ion battery will not be forced open, and the lithium-ion battery has the ability to withstand abnormal high temperatures, thereby reducing the risk of battery scrap caused by the forced opening of the explosion-proof valve (43).

Classes IPC  ?

• H01M 4/133 - Électrodes à base de matériau carboné, p. ex. composés d'intercalation du graphite ou CFx
• H01M 4/136 - Électrodes à base de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFy
• H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
• H01M 4/583 - Matériau carboné, p. ex. composés au graphite d'intercalation ou CFx
• H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFyEmploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p. ex. phosphates, silicates ou borates
• H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
• H01M 10/0587 - Structure ou fabrication d'accumulateurs ayant uniquement des éléments de structure enroulés, c.-à-d. des électrodes positives enroulées, des électrodes négatives enroulées et des séparateurs enroulés
• H01M 10/0585 - Structure ou fabrication d'accumulateurs ayant uniquement des éléments de structure plats, c.-à-d. des électrodes positives plates, des électrodes négatives plates et des séparateurs plats
• H01M 10/44 - Méthodes pour charger ou décharger
• H01M 10/42 - Procédés ou dispositions pour assurer le fonctionnement ou l'entretien des éléments secondaires ou des demi-éléments secondaires
• H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries

Abrégé

The present application provides a tape cutting apparatus. The tape cutting apparatus comprises a cutting assembly, a driving device, and a blocking member. The cutting assembly comprises a cutting blade holder, a cutting blade, a protective member, and elastic members. The cutting blade comprises a blade body and a blade edge. The blade body is connected to the cutting blade holder. The protective member is slidably connected to the cutting blade holder. The elastic members are disposed between the protective member and the cutting blade holder. The protective member is disposed on at least one side of the blade edge. The blade edge is lower than the protective member. The cutting blade holder is connected to the driving device. The blocking member is disposed corresponding to the protective member. The blocking member and the protective member are spaced apart from each other. A tape passing channel is formed between the blocking member and the protective member. The driving device is used for driving the cutting assembly to move. The protective member is close to or distant from the blocking member. The tape cutting apparatus provided in the present application is beneficial to improving the degree of automation of tape segment processing and manufacturing, reducing manual involvement, and thus effectively improving the work efficiency of tape segment cutting.

Classes IPC  ?

• B65H 35/07 - Distributeurs de bandes adhésives

Abrégé

A battery conveying device and a battery drying system, relating to the technical field of batteries. The battery conveying device comprises a conveying module, a plurality of pallets, and transfer modules; the conveying module comprises stator assemblies and a plurality of movers, and the pallets are connected to the movers; each stator assembly comprises mounting brackets, a conveying table, conveying stators, a returning table, and a plurality of returning stators; the movers can be magnetically connected to the conveying stators and the returning stators; each transfer module is configured to move each mover connected to the corresponding conveying stator so as to be connected to the corresponding returning stator, and move a mover connected to the corresponding returning stator so as to be connected to the corresponding conveying stator. In the process of conveying the batteries, when the batteries reach a specified position, the arrangement mode of the batteries can be controlled magnetically, so that the batteries are arranged on the basis of the number of batteries and a spacing needed by a mechanical hand for grabbing, that is, the batteries can be directly grouped by means of the battery conveying device, without an additional battery grouping operation, thereby reducing the number of procedures, and improving the drying efficiency.

Classes IPC  ?

• B65G 54/02 - Transporteurs non mécaniques, non prévus ailleurs électrostatiques, électriques ou magnétiques
• B65G 47/26 - Dispositifs pour influencer la position relative ou l'orientation des objets pendant le transport par transporteurs arrangeant les objets, p. ex. faisant varier l'espace entre chaque objet
• B07C 5/34 - Tri en fonction d'autres propriétés particulières
• B07C 5/36 - Appareils trieurs caractérisés par les moyens qu'ils utilisent en vue de la distribution

Abrégé

Disclosed in the present application are a feeding apparatus and a feeding system. The feeding apparatus comprises a detection device, a correction device and a control device. The detection device comprises a first bracket and an acquisition camera connected to the first bracket. The correction device comprises a first driving member and a rotating table connected to the first driving member, wherein the first driving member is used for driving the rotating table to rotate, and the rotating table is used for placing an adapter component. The control device is in communication connection with the acquisition camera and the first driving member, respectively. The present application improves the assembly efficiency of battery cells.

Classes IPC  ?

• B65G 47/91 - Dispositifs pour saisir et déposer les articles ou les matériaux comportant des pinces pneumatiques, p. ex. aspirantes

Abrégé

A transfer apparatus (100) and a battery production system. The transfer apparatus (100) is used for transferring an electrode assembly (200). The transfer apparatus (100) comprises a bearing member (10), a covering member (20), and a driving member (30). The bearing member (10) comprises a bearing portion (11) and first wall portions (12), wherein the first wall portions (12) are located at the edges of the bearing portion (11), the bearing portion (11) is used for bearing the electrode assembly (200), the first wall portions (12) extend in a first direction (X), and the first direction (X) is perpendicular to a direction in which the bearing member (10) and the covering member (20) are arranged opposite to each other. The covering member (20) is arranged opposite to the bearing member (10) and is movably connected to the bearing member (10) in the first direction (X), and the covering member (20) is used for covering a part of the electrode assembly (200). The driving member (30) is used for driving the bearing member (10) to move.

Classes IPC  ?

• B65G 47/74 - Dispositifs d'alimentation, de transfert ou de déchargement de genres ou types particuliers
• B65G 47/22 - Dispositifs pour influencer la position relative ou l'orientation des objets pendant le transport par transporteurs
• H01M 4/04 - Procédés de fabrication en général

Abrégé

Provided in the present application are a stirring apparatus and a battery production system. The stirring apparatus comprises a stirring tank, a material conveying pipe, and a grounding mechanism. The stirring tank is used for stirring a slurry. The material conveying pipe is connected to the stirring tank, and the material conveying pipe is used for connecting to an external transfer tank. The grounding mechanism comprises a grounding member, a first grounding line, and a second grounding line, wherein the first grounding line is used for connecting to the transfer tank, the second grounding line is connected to the stirring tank, and the first grounding line and the second grounding line are both electrically connected to the grounding member. The present application can reduce the risk of safety accidents occurring during the production process.

Classes IPC  ?

• B01F 35/60 - Dispositions de sécurité
• B01F 35/22 - Commande ou régulation
• B01F 35/21 - Mesure
• B01F 35/00 - Accessoires pour mélangeursOpérations auxiliaires ou dispositifs auxiliairesParties ou détails d'application générale
• H01M 4/04 - Procédés de fabrication en général

Abrégé

A method and apparatus for acquiring an available capacity of a power battery, a device, and a storage medium. The acquisition method comprises: acquiring historical charging data of a power battery in a preset time period (S10), the historical charging data comprising complete charging data of at least one charging cycle; extracting interval charging data of a pre-acquired SOC interval from each piece of complete charging data (S20); for each piece of interval charging data, acquiring a ratio of the charged capacity of the interval charging data to a compensation value (S30), the compensation value being a rated capacity compensation value corresponding to a charging depth of the interval charging data; and determining a preset quantile of all the ratios as an available capacity of the power battery (S40). The method for acquiring an available capacity of a power battery greatly improves the accuracy of a result of acquiring the available capacity of the power battery.

Classes IPC  ?

• G01R 31/36 - Dispositions pour le test, la mesure ou la surveillance de l’état électrique d’accumulateurs ou de batteries, p. ex. de la capacité ou de l’état de charge
• G01R 31/387 - Détermination de la capacité ampère-heure ou de l’état de charge
• G01R 19/10 - Mesure d'une somme, d'une différence, ou d'un rapport

Abrégé

A battery cell (5), a positive electrode sheet (531) and a preparation method therefor, and an electrical apparatus (6). The battery cell (5) comprises the positive electrode sheet (531). The positive electrode sheet (531) comprises: a positive electrode current collector (5311); a first positive electrode active layer (5312) disposed on at least one surface of the positive electrode current collector (5311), the first positive electrode active layer (5312) comprising ternary material A and a lithium iron phosphate material, ternary material A having a Dv50 particle size greater than the Dv50 particle size of the lithium iron phosphate material; and/or, ternary material A having a Dn50 particle size greater than the Dv50 particle size of the lithium iron phosphate material; and a second positive electrode active layer (5313) disposed on the surface of the first positive electrode active layer (5312) away from the positive electrode current collector (5311), the second positive electrode active layer (5313) comprising ternary material B. The positive electrode sheet (531) is applied to the battery cell (5), and can increase the energy density of the battery cell (5) and improve the cycle performance and power stability of the battery cell (5).

Classes IPC  ?

• H01M 4/131 - Électrodes à base d'oxydes ou d'hydroxydes mixtes, ou de mélanges d'oxydes ou d'hydroxydes, p. ex. LiCoOx
• H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy

Abrégé

A control method and control apparatus for a battery thermal anomaly, and an electric device. The method comprises: acquiring first state information, wherein the first state information comprises information for indicating that a thermal anomaly occurs in a battery (100); controlling the battery to power on or to maintain a powered-on state; acquiring second state information, wherein the second state information comprises information for indicating the state of an electric device, and the state of the electric device comprises a non-operating state or an operating state; and when the electric device is in the non-operating state, controlling the battery to discharge to a thermal management system (200) of the battery; or, when the electric device is in the operating state, controlling the battery to discharge to the thermal management system, and controlling the battery to discharge to a powertrain system of the electric device.

Classes IPC  ?

• B60L 3/00 - Dispositifs électriques de sécurité sur véhicules propulsés électriquementContrôle des paramètres de fonctionnement, p. ex. de la vitesse, de la décélération ou de la consommation d’énergie

Abrégé

A lithium metal battery cell, an electrolyte, a battery device, and an electric device. The lithium metal battery cell comprises the electrolyte, and the electrolyte comprises a lithium salt, carbon quantum dots, an ether solvent, and a diluent, wherein the ether solvent is used for dispersing and/or dissociating the lithium salt, the diluent is used for diluting the ether solvent, and the lithium salt and the diluent are immiscible.

Classes IPC  ?

• H01M 10/0567 - Matériaux liquides caracterisés par les additifs

Abrégé

The present application relates to the technical field of virtual power plant control, and discloses a plant control method and system for a virtual power, and a transaction system. The method comprises: sending a network formation completion instruction to a fog computing layer, so that the fog computing layer sends a data reporting instruction to a corresponding networking device on the basis of the network formation completion instruction, and then provides feedback; acquiring target data fed back by the fog computing layer, the target data being calculated on the basis of reporting data submitted by the networking device; sending the target data to a virtual power plant management center, and receiving a scheduling instruction generated by the virtual power plant management center on the basis of the target data; and performing device control according to the scheduling instruction, thereby quickly processing, by means of the fog computing layer, an instruction sent by a cloud computing center, and therefore addressing the problems of high network latency and high bandwidth overhead in current mainstream cloud computing models based on distributed control frameworks.

Classes IPC  ?

• H04L 67/12 - Protocoles spécialement adaptés aux environnements propriétaires ou de mise en réseau pour un usage spécial, p. ex. les réseaux médicaux, les réseaux de capteurs, les réseaux dans les véhicules ou les réseaux de mesure à distance

Abrégé

Provided in the present application are a battery device, an energy storage device and an electrical device. The battery device (200) comprises a battery cell (300) and an electrical control assembly (400), wherein the electrical control assembly comprises a circuit board (51), a housing (40) and a covering structure (53), and a connector socket (52) is provided on the circuit board; an accommodating cavity (401) is provided in the housing (40), the circuit board (51) is mounted in the accommodating cavity (401), and an opening (402) allowing the connector socket (52) to extend out is provided in the housing (40); and the covering structure (53) is arranged on the housing (40) and at least partially covers a gap (403) between the connector socket (52) and a side wall of the opening (402). Using the covering structure (53) to reduce or even close the gap (403) between the connector socket (52) and the side wall of the opening (402) can enable the electrical control assembly to meet desired protection level requirements.

Classes IPC  ?

• H01M 50/503 - Interconnecteurs pour connecter les bornes des batteries adjacentesInterconnecteurs pour connecter les cellules en dehors d'un boîtier de batterie caractérisées par la forme des interconnecteurs
• H01R 13/52 - Boîtiers protégés contre la poussière, les projections, les éclaboussures, l'eau ou les flammes

Abrégé

Provided in some embodiments of the present application is a method for preparing an electrode assembly. In the method for preparing an electrode assembly, the electrode assembly and a separator are arranged between a first film layer structure and a second film layer structure, and are surrounded by an encapsulation edge formed by the first film layer structure and the second film layer structure. Since the separator is located outside the electrode assembly, at least a portion of the encapsulation edge can be conveniently cut off by cutting a position corresponding to the separator, such that at least a part of a connection between the first film layer structure and the second film layer structure has an opening, and the connection between the first film layer structure and the second film layer structure can be quickly opened from the opening, thereby improving the convenience of production of the electrode assembly, and facilitating an improvement in the production efficiency.

Classes IPC  ?

• H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium

Abrégé

A solid-state electrolyte slurry, an electrode slurry, a solid-state electrolyte sheet, an electrode sheet, a solid-state battery cell, a battery device, and an electric device. The solid-state electrolyte slurry comprises a sulfide solid-state electrolyte material, a solvent, and a binder dissolved in the solvent. The solvent is a non-polar solvent, a weakly polar solvent, or a mixed solvent of the two. The binder comprises a polyacrylate binder and a non-polar polyolefin binder. The solid-state electrolyte slurry has high dispersibility, high suspension, and good adhesion. When the solid-state electrolyte slurry is used in a solid-state battery cell, the solid-state battery cell can have high initial coulombic efficiency.

Classes IPC  ?

• H01M 10/0562 - Matériaux solides
• H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium

Abrégé

Provided are a separator, a secondary battery cell, a battery device, and an electric device. The separator comprises a porous base membrane and a porous coating located on at least one side of the porous base membrane, and the porous coating comprises heat-resistant organic particles and non-fluorinated polymer binder particles. The use of the separator in the secondary battery cell can enable the secondary battery cell to have high mass energy density, high reliability, and good cycle performance.

Classes IPC  ?

• H01M 50/443 - Matériau particulaire
• H01M 50/449 - Séparateurs, membranes ou diaphragmes caractérisés par le matériau ayant une structure en couches
• H01M 10/052 - Accumulateurs au lithium

Abrégé

Provided in the present disclosure are a negative electrode pole piece, a battery cell, a battery apparatus, and an electrical apparatus. The negative electrode pole piece comprises a negative electrode current collector and an insulating frame located on at least one side of the negative electrode current collector. The insulating frame has a plurality of gaps. The negative electrode pole piece further comprises a lithiophilic material. The lithiophilic material is located on the surface of the negative electrode current collector close to the insulating frame, and/or the lithiophilic material is located in the gaps of the insulating frame close to the negative electrode current collector. The negative electrode pole piece is used in the battery cell, can enable the battery cell to have low volume expansion and good electrolyte wettability, and also enable the battery cell to have good cycle performance.

Classes IPC  ?

• H01M 4/13 - Électrodes pour accumulateurs à électrolyte non aqueux, p. ex. pour accumulateurs au lithiumLeurs procédés de fabrication

Abrégé

A separator and a preparation method therefor, a secondary battery cell, a battery apparatus, and an electric apparatus. The separator comprises a porous base film and a porous coating located on at least one side of the porous base film; the porous coating comprises silicon-containing organic resin particles and fibrous material; and at least some of the silicon-containing organic resin particles are located within the fibrous material. The separator is used in the secondary battery cell, such that the secondary battery cell has both high gravimetric energy density and high reliability.

Classes IPC  ?

• H01M 50/449 - Séparateurs, membranes ou diaphragmes caractérisés par le matériau ayant une structure en couches
• H01M 10/00 - Éléments secondairesLeur fabrication
• H01M 50/403 - Procédés de fabrication des séparateurs, des membranes ou des diaphragmes

Abrégé

3d3d of the silicon-containing organic resin particles is 290°C -330°C. The secondary battery cell has high quality energy density, high reliability, and good high-temperature performance.

Classes IPC  ?

• H01M 50/409 - Séparateurs, membranes ou diaphragmes caractérisés par le matériau
• H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
• C08F 230/08 - Copolymères de composés contenant un ou plusieurs radicaux aliphatiques non saturés, chaque radical ne contenant qu'une seule liaison double carbone-carbone et contenant du phosphore, du sélénium, du tellure ou un métal contenant un métal contenant du silicium

Abrégé

A separator and a preparation method therefor, a secondary battery cell, a battery device, and an electric device. The separator comprises a porous base membrane and a porous coating located on at least one side of the porous base membrane. The porous coating comprises organic particles of phenolic resins and fibrous materials, and at least a portion of the organic particles of phenolic resins are located between the fibrous materials. The separator is used in a secondary battery cell, such that the secondary battery cell has both a high quality energy density and high reliability.

Classes IPC  ?

• H01M 50/449 - Séparateurs, membranes ou diaphragmes caractérisés par le matériau ayant une structure en couches
• H01M 50/451 - Séparateurs, membranes ou diaphragmes caractérisés par le matériau ayant une structure en couches comprenant des couches de matériau organique uniquement et des couches comprenant un matériau inorganique
• H01M 50/403 - Procédés de fabrication des séparateurs, des membranes ou des diaphragmes
• H01M 50/409 - Séparateurs, membranes ou diaphragmes caractérisés par le matériau

Abrégé

A polymer and a preparation method therefor, a perovskite cell, a photovoltaic module, an electric device, and a power generation device. The perovskite cell comprises a hole transport layer and a perovskite layer sequentially arranged in a thickness direction of the perovskite cell. The hole transport layer comprises a polymer. The polymer comprises a repeating unit as represented by formula (I): -M-R- formula (I), wherein in formula (I), M comprises at least one of anilino, carbazolyl, acridinyl, phenoxazinyl, and phenothiazinyl; R comprises at least one of H, C1-C10 alkyl, a substituted or unsubstituted benzene ring, a substituted or unsubstituted heterocyclic ring, and a substituted or unsubstituted benzo heterocyclic ring; M is linked to a heteroatom. The technical solution of the present application can improve the stability of the perovskite cell.

Classes IPC  ?

• H10K 30/86 - Couches à haute mobilité des trous, p. ex. de transport des trous ou couches de blocage des électrons

Abrégé

Disclosed in the present application are a battery cell and a preparation method therefor, a positive electrode active material and a preparation method therefor, a positive electrode sheet, a battery device and an electric device. The battery cell comprises a positive electrode sheet, wherein the positive electrode sheet comprises a current collector and a positive electrode active material layer arranged on at least one side of the current collector, the positive electrode active material layer comprises a positive electrode active material, and the positive electrode active material comprises an O3-type layered metal oxide; and in an X-ray diffraction pattern of the positive electrode active material, the ratio of the intensity of the (006) diffraction peak to the intensity of the (011) diffraction peak is less than or equal to 1. Therefore, the morphological characteristics of the positive electrode active material can be improved, and the tap density of the positive electrode active material and the compacted density of the positive electrode active material layer can be increased, thereby improving the energy density of the battery cell.

Classes IPC  ?

• H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy

Abrégé

233)- repeating units. The fluorine-containing polymer contains a large number of F-containing groups, and can thus spontaneously react with by-products such as dead lithium generated by side reactions of the battery to convert the by-products into an inorganic component LiF that is conducive to the improvement of electrode performance; therefore, the loss of lithium can be effectively reduced, and the problem of reduced battery capacity can thus be ameliorated.

Classes IPC  ?

• H01M 4/13 - Électrodes pour accumulateurs à électrolyte non aqueux, p. ex. pour accumulateurs au lithiumLeurs procédés de fabrication
• H01M 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p. ex. liants, charges
• H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium

Abrégé

A method and system for triggering thermal runaway of batteries. The method comprises: perforating a first position of a housing of a target battery pack and a second position of a casing of a target battery cell respectively, so as to form a first through hole at the first position and a second through hole at the second position, wherein the target battery cell is located in the target battery pack, and the projection of the first through hole on the casing of the target battery cell intersects with the second through hole (S201); charging the target battery cell to a preset SOC (S202); and controlling a piercing portion of a piercing assembly to pierce into the target battery cell through the first through hole and the second through hole in sequence, with a cap portion of the piercing assembly covering the first through hole, wherein the piercing portion and the cap portion are connected to each other, and the cap portion is located at one end of the piercing portion in an axial direction (S203). The method can equivalently simulate an actual thermal runaway scenario of batteries.

Classes IPC  ?

• G01R 31/36 - Dispositions pour le test, la mesure ou la surveillance de l’état électrique d’accumulateurs ou de batteries, p. ex. de la capacité ou de l’état de charge

Abrégé

1234523455 are not all hydrogen atoms.

Classes IPC  ?

• H01M 10/0567 - Matériaux liquides caracterisés par les additifs
• H01M 10/0569 - Matériaux liquides caracterisés par les solvants

Abrégé

The present application relates to a battery cell, a battery, and an electric device. The battery cell comprises: a housing having an opening; a cell assembly accommodated in the housing; an end cover provided at the opening in a sealing manner; electrode terminals provided on the end cover and used for connecting to the cell assembly; and rubber sealing members provided between the electrode terminals and the end cover in a sealing manner, the rubber sealing members comprising hydrogenated nitrile butadiene rubber, and the hydrogenated nitrile butadiene rubber having a weight average molecular weight of 100 thousand to 1 million.

Classes IPC  ?

• H01M 50/193 - Matériau organique
• H01M 50/188 - Éléments de scellement caractérisés par la position des éléments de scellement les éléments de scellement étant arrangés entre le couvercle et la borne
• C08L 15/00 - Compositions contenant des dérivés du caoutchouc

Abrégé

The present application relates to a battery cell, a battery, a rubber sealing member, a manufacturing method therefor, and an electrical apparatus. The battery cell comprises: a housing having an opening; a cell assembly accommodated in the housing; an end cover provided at the opening and sealing the opening; electrode terminals provided on the end cover and used for connecting to the cell assembly; rubber sealing members, each rubber sealing member provided between an electrode terminal and the end cover and sealing the electrode terminal; each rubber sealing member comprises hydrogenated nitrile rubber and ethylene propylene diene monomer rubber, the hydrogenated nitrile rubber having an average molecular weight of one hundred thousand to one million.

Classes IPC  ?

• H01M 50/193 - Matériau organique
• H01M 50/188 - Éléments de scellement caractérisés par la position des éléments de scellement les éléments de scellement étant arrangés entre le couvercle et la borne

Abrégé

A lithium-ion battery, comprising a casing (40), a battery cell (30), and an electrolyte. The battery cell (30) comprises a positive electrode sheet (10), a negative electrode sheet (20), and a separator; a negative electrode active material comprises graphite; a positive electrode active material comprises a lithium-containing phosphate and a carbon layer located on the surface of the lithium-containing phosphate; the thickness of a single-sided active material layer of the negative electrode sheet is 50 μm-95 μm; the thickness of a single-sided active material layer of the positive electrode sheet is 60 μm-105 μm; the Dv50 of the negative electrode active material is 10 μm-30 μm; the graphitization degree of the negative electrode active material is greater than or equal to 90%; the capacity L of the lithium-ion battery satisfies: 300 Ah87cm3. Under normal use conditions, an explosion-proof valve (43) of the lithium-ion battery will not be ruptured, and the battery has the ability to withstand high-temperature abnormalities, thereby reducing the risk of battery scrap caused by the explosion-proof valve (43) being ruptured.

Classes IPC  ?

• H01M 4/133 - Électrodes à base de matériau carboné, p. ex. composés d'intercalation du graphite ou CFx
• H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
• H01M 10/058 - Structure ou fabrication

Abrégé

The present application relates to the technical field of lithium batteries. Provided are a lithium-ion battery, a charging method and a lithium-ion battery system. The lithium-ion battery comprises a housing, a cell and an electrolyte. The cell comprises a positive electrode sheet, a negative electrode sheet and a separator; a negative electrode active material comprises graphite; a positive electrode active material comprises a lithium-containing phosphate and a carbon layer provided on the surface of the lithium-containing phosphate; the thickness of an active material layer on a single side of the negative electrode sheet is 50 μm-95 μm, and the thickness of an active material layer on a single side of the positive electrode sheet is 60 μm-105 μm; the Dv50 of the negative electrode active material is 10 μm-30 μm; the degree of graphitization of the negative electrode active material is greater than or equal to 90%; the capacity L of the lithium-ion battery satisfies 500 Ah190 cm3. Under normal use conditions, an explosion-proof valve of the lithium-ion battery will not be triggered open, allowing for a capability to withstand abnormal high temperature, thereby reducing the risk of lithium-ion battery scrapping due to the explosion-proof valve being triggered open.

Classes IPC  ?

• H01M 4/133 - Électrodes à base de matériau carboné, p. ex. composés d'intercalation du graphite ou CFx
• H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
• H01M 4/583 - Matériau carboné, p. ex. composés au graphite d'intercalation ou CFx
• H01M 10/42 - Procédés ou dispositions pour assurer le fonctionnement ou l'entretien des éléments secondaires ou des demi-éléments secondaires
• H01M 10/44 - Méthodes pour charger ou décharger
• H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
• H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries

Abrégé

dgdd of D peak of a Raman shift within a range of 1350±50 cm-1gg of G peak of a Raman shift within a range of 1580±50 cm-1 is 0.2-1.5; the negative electrode sheet comprises a negative electrode current collector and a negative electrode film layer provided on at least one side of the negative electrode current collector; and when the state of charge of the secondary battery is 100% or the voltage of the secondary battery is 3.65 V, a heat release amount Q of the negative electrode film layer in the electrolyte solution satisfies: 250 J/g≤Q≤600 J/g.

Classes IPC  ?

• H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs

Abrégé

The present disclosure discloses a battery apparatus and a partial discharge monitoring method. The battery apparatus comprises: a single-cell battery, an insulating layer being provided on a surface of the single-cell battery; an ultrasonic sensor, the ultrasonic sensor being arranged on the side of the insulating layer away from the single-cell battery; a signal acquisition assembly, the signal acquisition assembly being provided separately from the ultrasonic sensor and coupled to the ultrasonic sensor; and a detection assembly, the detection assembly being coupled to the signal acquisition assembly. The ultrasonic sensor is used for converting an ultrasonic signal generated by partial discharge of the single-cell battery into a first voltage signal. The signal acquisition assembly is used for processing the first voltage signal and then outputting same to the detection assembly. The detection assembly is used for performing computational processing on the processed first voltage signal, so as to obtain a monitoring result characterizing the partial discharge of the single-cell battery.

Classes IPC  ?

• H01M 10/48 - Accumulateurs combinés à des dispositions pour mesurer, tester ou indiquer l'état des éléments, p. ex. le niveau ou la densité de l'électrolyte
• G01R 31/392 - Détermination du vieillissement ou de la dégradation de la batterie, p. ex. état de santé
• G01R 31/396 - Acquisition ou traitement de données pour le test ou la surveillance d’éléments particuliers ou de groupes particuliers d’éléments dans une batterie

Abrégé

The present disclosure provides a perovskite solar cell, comprising a first electrode, a perovskite light-absorbing layer, and a second electrode that are sequentially stacked. The perovskite light-absorbing layer comprises particles having a core-shell structure, the core of the particles comprises perovskite grains, and the shell comprises a silane cross-linked material.

Classes IPC  ?

• H10K 30/50 - Dispositifs photovoltaïques [PV]

Abrégé

The present application relates to a self-assembling molecule, a perovskite solar cell, a photovoltaic module, a power generation device, and an electric device. The perovskite solar cell comprises a first electrode, a functional layer, a perovskite light-absorbing layer, and a second electrode stacked in a thickness direction of the perovskite solar cell. The functional layer comprises the self-assembling molecule, and the self-assembling molecule comprise a hole extraction group. The maximum size of the self-assembling molecule in a first direction is a first size, the maximum size of the self-assembling molecule in a second direction is a second size, and the maximum size of the self-assembling molecule in a third direction is a third size, wherein at least one of the first size, the second size, and the third size is greater than or equal to 1.6 nm, and any two of the first direction, the second direction, and the third direction are perpendicular to each other. The photoelectric conversion efficiency and device stability of the perovskite solar cell in the present application can be effectively improved.

Classes IPC  ?

• C07F 9/6561 - Composés hétérocycliques, p. ex. contenant du phosphore comme hétéro-atome du cycle contenant des systèmes de plusieurs hétérocycles déterminants condensés entre eux ou condensés avec un carbocycle ou un système carbocyclique commun, avec ou sans autres hétérocycles non condensés
• H10K 30/50 - Dispositifs photovoltaïques [PV]
• H10K 30/86 - Couches à haute mobilité des trous, p. ex. de transport des trous ou couches de blocage des électrons

Abrégé

A separator and a preparation method therefor, a secondary battery cell, a battery device, and an electric device. The separator comprises a porous base membrane and a porous coating located on at least one side of the porous base membrane. The porous coating comprises organic particles and inorganic particles, and the mass proportion of the organic particles in the porous coating is greater than the mass proportion of the inorganic particles in the porous coating. The separator is used in a secondary battery cell, such that the secondary battery cell has both high energy density and high reliability.

Classes IPC  ?

• H01M 50/449 - Séparateurs, membranes ou diaphragmes caractérisés par le matériau ayant une structure en couches

Abrégé

The present application relates to a self-assembling molecule, a perovskite solar cell, a photovoltaic module, a power generation device, and an electric device. The perovskite solar cell comprises a first electrode, a functional layer, a perovskite light-absorbing layer, and a second electrode which are stacked in a thickness direction of the perovskite solar cell. The functional layer comprises the self-assembling molecule, and the self-assembling molecule comprises one or more of a structural formula shown in formula I1, a structural formula shown in formula I2, a structural formula shown in formula I3, and a structural formula shown in formula I4.

Classes IPC  ?

• C07F 9/58 - Cycles pyridiniques
• C07D 209/82 - CarbazolesCarbazoles hydrogénés
• H10K 71/00 - Fabrication ou traitement spécialement adaptés aux dispositifs organiques couverts par la présente sous-classe
• H10K 30/88 - PassivationConteneursEncapsulations
• H10K 30/50 - Dispositifs photovoltaïques [PV]
• H10K 85/60 - Composés organiques à faible poids moléculaire
• H10K 85/50 - Pérovskites organiquesPérovskites hybrides organiques-inorganiques [HOIP], p. ex. CH3NH3PbI3

Abrégé

The present application provides a battery cell, a battery apparatus, and an electric device. The battery cell comprises a positive electrode sheet, a negative electrode sheet, and a separator, wherein the separator is located between the positive electrode sheet and the negative electrode sheet. The separator comprises a porous base membrane and a coating disposed on at least one side of the porous base membrane, wherein the coating comprises heat-resistant particles and a first binder. The first binder is used for bonding the heat-resistant particles onto the porous base membrane. The heat-resistant particles comprise an organic compound; the main chain or the side chain of the organic compound has a rigid structure; and the rigid structure comprises a planar cyclic conjugated group and/or a covalent polyhedral framework. When the organic compound is a small molecule compound, a condensation polymer or a copolymer, the mass proportion of the rigid structure in the organic compound is 40-99%; and when the organic compound is a polycondensation-type copolymer, the mass proportion of the rigid structure in the organic compound is 2-30%. The technical solution of the present application is beneficial to improving the reliability of a battery cell.

Classes IPC  ?

• H01M 50/449 - Séparateurs, membranes ou diaphragmes caractérisés par le matériau ayant une structure en couches
• C08F 230/08 - Copolymères de composés contenant un ou plusieurs radicaux aliphatiques non saturés, chaque radical ne contenant qu'une seule liaison double carbone-carbone et contenant du phosphore, du sélénium, du tellure ou un métal contenant un métal contenant du silicium

Abrégé

A charging and discharging circuit and method, and a computing device and a storage medium. Two energy storage elements in the charging and discharging circuit are connected by means of a first adjustment switch module, after a switch is turned on, heating control is performed, and self-heating of a battery is realized by means of an alternating current generated by a charging and discharging loop between a dual-driving electric motor and the battery.

Classes IPC  ?

• H02J 7/60 -

Abrégé

This application discloses a composite material and a preparation method therefor, a positive electrode plate, a cell, a battery, and an electric device, and belongs to the field of battery technologies. A composite material includes a lithium-containing compound, a catalyst, and a carbon material. The carbon material has a hollow tubular structure, and the lithium-containing compound and the catalyst are arranged in the tubular structure. The lithium-containing compound includes lithium, carbon, and oxygen. The catalyst includes at least one of a transition metal oxide, a transition metal carbide, or a transition metal nitride. Technical solutions of embodiments of this application can improve a capacity of a cell.

Classes IPC  ?

• H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
• H01M 4/02 - Électrodes composées d'un ou comprenant un matériau actif
• H01M 4/04 - Procédés de fabrication en général
• H01M 4/52 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer
• H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFyEmploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p. ex. phosphates, silicates ou borates
• H01M 4/583 - Matériau carboné, p. ex. composés au graphite d'intercalation ou CFx
• H01M 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p. ex. liants, charges
• H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium

Abrégé

A battery cell (20), a battery device (100), and an electric device (1000). The battery cell comprises: a casing assembly (21); an electrode assembly (22), which is arranged within the casing assembly and comprises a first electrode sheet (221), a second electrode sheet (222) and a separator (223), the separator being arranged between the first electrode sheet and the second electrode sheet, wherein the electrode assembly has a winding axis, and the electrode assembly is a wound core structure wound around the winding axis and comprises a plurality of winding layers perpendicular to the winding axis, each of the winding layers comprising a first electrode sheet, a separator and a second electrode sheet that are stacked; and a buffer member (23), which is arranged within at least one winding layer, and located between the separator and the first electrode sheet or between the separator and the second electrode sheet.

Classes IPC  ?

• H01M 10/0587 - Structure ou fabrication d'accumulateurs ayant uniquement des éléments de structure enroulés, c.-à-d. des électrodes positives enroulées, des électrodes négatives enroulées et des séparateurs enroulés

Abrégé

Provided in embodiments of the present application are a lithium metal battery cell, a battery device, and an electric device. The lithium metal battery cell comprises a casing and an electrode assembly accommodated in the casing, and the electrode assembly comprises a negative electrode sheet and an insulating member. The casing is provided with a negative electrode lead-out portion. The negative electrode sheet comprises a negative electrode body and at least one negative tab, and the negative electrode body and the negative tab are arranged in a first direction and connected to each other; in a second direction, the size of the negative tab is smaller than the size of the negative electrode body, and the first direction, the second direction and the thickness direction of the negative electrode body are perpendicular to each other. The negative tab is electrically connected to the negative electrode lead-out portion. At least part of the insulating member is located on one side of the negative electrode body in the thickness direction and attached to the negative electrode body, and the region of the negative electrode body covered by the insulating member is connected to at least one negative tab.

Classes IPC  ?

• H01M 50/593 - Éléments d’espacementPlaques d’isolation
• H01M 4/13 - Électrodes pour accumulateurs à électrolyte non aqueux, p. ex. pour accumulateurs au lithiumLeurs procédés de fabrication

Abrégé

The present application is applicable to the technical field of batteries. Provided are a battery cell (1), related apparatuses, an energy storage system (1000), and a charging network (2000). The related apparatuses comprise a battery apparatus (10), an energy storage apparatus (100), and an electrical apparatus. The battery cell (1) comprises a casing (12), an electrode assembly (11), and a thermally conductive member (13). The electrode assembly (11) comprises a main body part (111) and tabs (112) connected to the main body part (111), the main body part (111) and the tabs (112) being both provided in the casing (12). The thermally conductive member (13) is arranged in the casing (12), and is at least partially arranged around the periphery of the main body part (111). The thermal conductivity of the thermally conductive member (13) is greater than the thermal conductivity of the casing (12). Providing the thermally conductive member (13) can increase the rate at which the heat inside the main body part (111) is diffused to the casing (12) and is then released, thereby effectively reducing a temperature difference between the interior of the main body part (111) and the casing (12).

Classes IPC  ?

• H01M 10/617 - Types de commande de la température pour réaliser l'uniformité ou une répartition désirée de la température

Abrégé

A battery cell (100), a related device and system, and a charging network. The battery cell (100) comprises an electrode plate (11), wherein the electrode plate (11) comprises: a current collector (111), the current collector (111) comprising a body portion (1111) and a tab portion (1112) connected to the body portion (1111), the tab portion (1112) extending from one side of the body portion (1111) along the direction of width of the current collector (111) in a direction away from the body portion (1111); and an insulating layer (112), which is disposed on the tab portion (1112) and covers at least a part of the tab portion (1112), wherein the insulating layer (112) is located on the side of the tab portion (1112) close to the body portion (1111). In the provided battery cell (100), the insulating layer (112) is provided, and the insulating layer (112) covers at least a part of the tab portion (1112), so as to increase the strength of the tab portion (1112) by means of the insulating layer (112) and reduce the bending amount of the tab portion (1112), thereby reducing the risk of short-circuiting due to the tab portion (1112) being bent and inserted into the gap of the electrode plate (11), and improving the safety performance and stability of the battery cell (100).

Classes IPC  ?

• H01M 4/66 - Emploi de matériaux spécifiés

Abrégé

The present application is applicable to the technical field of power batteries, and provides a battery cell (100), a related apparatus and system, and a charging network. The battery cell (100) comprises electrode sheets (11), each electrode sheet (11) comprising: a current collector (111), the current collector (111) comprising two end faces (1111a) located at two opposite ends in the width direction of the current collector (111), and the current collector (111) further comprising two side faces (1111b) located at two opposite sides in the thickness direction of the current collector (111); and an insulating layer (113), which is provided on the current collector (111). The insulating layer (113) covers an end face (1111a), and the insulating layer (113) further covers a portion of the two side faces (1111b), respectively forming a first covering face (113a) and a second covering face (113b). On the same projection plane perpendicular to the thickness direction of the current collector (111), the size of the orthographic projection of the first covering face (113a) is different from the size of the orthographic projection of the second covering face (113b). In the battery cell (100) provided in the embodiments of the present application, the insulating layer (113) covers burrs on the end face (1111a), so that the widths of the insulating layer (113) located on both sides of the current collector (111) are different, thereby alleviating the concentration of stress of the electrode sheet (11) at the insulating layer (113).

Classes IPC  ?

• H01M 4/66 - Emploi de matériaux spécifiés
• H01M 10/42 - Procédés ou dispositions pour assurer le fonctionnement ou l'entretien des éléments secondaires ou des demi-éléments secondaires
• H01M 10/058 - Structure ou fabrication
• H01M 50/586 - Moyens pour empêcher un usage ou une décharge indésirables pour empêcher les contacts incorrects à l’intérieur ou à l’extérieur des batteries à l’intérieur des batteries p. ex. les contacts incorrects des électrodes

Abrégé

The present application relates to a thermal management method and apparatus for an energy storage system, and an energy storage system. The method comprises: acquiring temperature information and operating status information of battery clusters in an energy storage system; on the basis of the temperature information, determining a first candidate management mode of a thermal management assembly in the energy storage system with respect to all the battery clusters, and on the basis of the temperature information and the operating status information, determining a second candidate management mode for all online battery clusters; when the first candidate management mode is consistent with the second candidate management mode, determining the first candidate management mode to be a target thermal management mode; on the basis of the target thermal management mode, controlling the thermal management assembly to operate to perform thermal management on the energy storage system, and when there is a newly added battery cluster in the energy storage system, acquiring a newly-added-request management mode for the newly added battery cluster; and on the basis of the newly-added-request management mode and the current thermal management mode of the energy storage system, determining a target thermal management mode of the energy storage system. By using the method, the operation stability and safety of an energy storage system can be improved.

Classes IPC  ?

• H01M 10/63 - Systèmes de commande
• H01M 10/633 - Systèmes de commande caractérisés par des algorithmes, des diagrammes, des détails de logiciel ou similaires
• H01M 10/61 - Types de commande de la température

Abrégé

The present application relates to the technical field of batteries, and discloses an electrode sheet defect detection system and method. The system comprises: a first inspection unit, used for inspecting the appearance and dimension of a B surface of a die-cut electrode sheet; a second inspection unit, used for inspecting the appearance and dimension of the die-cut electrode sheet; a slitting device, used for slitting the die-cut electrode sheet to obtain a first-side electrode sheet and a second-side electrode sheet; a third inspection unit, used for inspecting the appearance and dimension of an A surface of the first-side electrode sheet; a fourth inspection unit, used for inspecting the appearance and dimension of an A surface of the second-side electrode sheet; and a control device, used for performing appearance shadow detection on the electrode sheet on the basis of inspection information to obtain an appearance shadow detection result, and/or performing dimension abrupt change detection on the electrode sheet on the basis of the inspection information to obtain a dimension abrupt change detection result, so that a wrinkling abnormality can be accurately detected in the production process of the electrode sheet, thereby improving the safety of a battery.

Classes IPC  ?

• G01N 21/01 - Dispositions ou appareils pour faciliter la recherche optique
• G01N 21/95 - Recherche de la présence de criques, de défauts ou de souillures caractérisée par le matériau ou la forme de l'objet à analyser
• G01B 11/00 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques
• G01B 11/02 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer la longueur, la largeur ou l'épaisseur

Abrégé

Disclosed in the embodiments of the present disclosure are a battery electrolyte injection system and a battery electrolyte injection method. The battery electrolyte injection system comprises a frame, an electrolyte preparation device, and an electrolyte injection device. The electrolyte injection device comprises a housing, an electrolyte injection assembly, and a positive/negative pressure switching interface. The housing has an accommodating cavity. The electrolyte injection assembly and the positive/negative pressure switching interface are both disposed on the housing and are not in communication with each other. The positive/negative pressure switching interface is used for evacuating the accommodating cavity in a sealed state and a battery cell located in the accommodating cavity, or to introduce air into the accommodating cavity in a vacuum state. The electrolyte injection assembly is used for injecting an electrolyte into the battery cell. The electrolyte preparation device comprises a moving mechanism and a liquid dispensing valve. The moving mechanism is used for driving the liquid dispensing valve to move, such that a liquid dispensing port is detachably coupled to a liquid inlet of an electrolyte preparation assembly.

Classes IPC  ?

• H01M 50/609 - Moyens ou procédés pour le remplissage en liquide, p. ex. avec des électrolytes
• H01M 50/618 - Contrôle de la pression
• H01M 10/52 - Enlèvement des gaz situés à l'intérieur de l'élément secondaire, p. ex. par absorption

Abrégé

Provided in the present application are a lithium metal battery cell, a negative electrode plate and a manufacturing method therefor, a battery apparatus, and an electrical apparatus. The lithium metal battery comprises a negative electrode plate; the negative electrode plate comprises a composite lithium layer; the composite lithium layer comprises lithium metal and carbon quantum dots, the lithium metal being a continuous phase, and the carbon quantum dots being a dispersed phase.

Classes IPC  ?

• H01M 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p. ex. liants, charges

Abrégé

The present application discloses a solid-state battery cell and a manufacturing method therefor. The solid-state battery cell comprises an electrode assembly and a packaging casing. The packaging casing comprises two packaging films; the electrode assembly is arranged between the two packaging films; the two packaging films are connected to form a packaging portion arranged along a circumferential direction of the electrode assembly; the packaging portion comprises an packaging region and a reinforcement region; and the thickness of the reinforcement region is greater than that of the packaging region, and/or the hardness of the reinforcement region is greater than that of the packaging region. In the solid-state battery cell and the manufacturing method therefor in the present application, the packaging portion is arranged along the circumferential direction of the electrode assembly and matches the shape of the electrode assembly, thereby improving the sealing stability. In addition, the packaging portion is provided with a reinforcement region, and the reinforcement region has a larger thickness or higher strength, thereby reducing the risk of wrinkling of the packaging portion. The structure improves packaging efficiency, and also reduces the risk of wrinkling during packaging, thereby improving the sealing performance of the solid-state battery cell.

Classes IPC  ?

• H01M 50/126 - Boîtiers primairesFourreaux ou enveloppes caractérisés par le matériau ayant une structure en couches comprenant au moins trois couches
• H01M 50/136 - Flexibilité ou capacité à être plié
• H01M 50/133 - Épaisseur

Abrégé

A battery cell, a battery apparatus, and an electric device, relating to the technical field of batteries. The battery cell comprises: a first end cover assembly comprising a first electrode terminal; an electrode assembly comprising a main body portion and a tab extending from the main body portion; and an isolation member at least partially arranged between the first electrode terminal and the main body portion, wherein the first end cover assembly is provided with a first snap-fit structure; the isolation member is provided with a second snap-fit structure; one of the first snap-fit structure and the second snap-fit structure is provided with a snap portion, and the other of the first snap-fit structure and the second snap-fit structure is provided with a slot portion; the snap portion is snap-fitted to the slot portion, the snap portion is provided with a first snap-fit surface, the slot portion is provided with a second snap-fit surface, the dimensions of the first snap-fit surface and the second snap-fit surface in a first direction are smaller than those in a second direction, the first direction is a length direction of the isolation member, and the second direction is a width direction of the isolation member. The technical solution of the present application facilitates improving the reliability of battery cells.

Classes IPC  ?

• H01M 50/593 - Éléments d’espacementPlaques d’isolation

Abrégé

The present application relates to a slurry mixing control method, a slurry mixing apparatus, and a solid-state battery production system. The slurry mixing control method comprises: introducing a powder and a solvent into a mixer in a workshop, and the mixer being started and mixing the powder and the solvent; obtaining the concentration of a gas to be measured in a predetermined area within the workshop and comparing the concentration of the gas to be measured with a safety threshold; supplying air to the workshop and discharging the gas to be measured which is in the workshop; and when the concentration of the gas to be measured is greater than the safety threshold, controlling the mixer to stop mixing. Provided in the embodiments of the present application are a slurry mixing control method, a slurry mixing apparatus, and a solid-state battery production system, which can measure the concentration of a gas in real time and regulate same to be within a safe range, thereby improving safety during production.

Classes IPC  ?

• B01F 35/22 - Commande ou régulation
• B01F 23/50 - Mélange de liquides avec des solides

Abrégé

The present application discloses a battery cell, a related apparatus, a system, and a charging network. The battery cell comprises a positive electrode sheet, a negative electrode sheet, and a separator located between the positive electrode sheet and the negative electrode sheet. The separator comprises a base film and a material coating arranged on at least one surface of the base film. The material coating comprises mesoporous fibrous materials and mesoporous particles, wherein at least some of the mesoporous fibrous materials and the mesoporous particles are mutually intercalated. In the present application, the material coating comprising the mesoporous fibrous materials and the mesoporous particles is provided on the separator, such that transition metal ions dissolved out of the positive electrode sheet can be effectively captured and the migration of the transition metal ions to the negative electrode sheet or an electrolyte is hindered, thereby effectively suppressing internal side reactions of the battery cell, enabling the battery to still maintain a high capacity after multiple charging and discharging cycles, and thus prolonging the cycle life of the battery cell.

Classes IPC  ?

• H01M 10/058 - Structure ou fabrication

Abrégé

A separator and a preparation method therefor, a secondary battery cell, a battery device, and an electric device. The separator comprises a porous base film and a porous coating located on at least one side of the porous base film; the porous coating comprises cross-linked styrene organic particles and fibrous materials, and at least part of the cross-linked styrene organic particles is located between the fibrous materials. The separator is used in the secondary battery cell, such that the secondary battery cell has both high quality energy density and high reliability.

Classes IPC  ?

• H01M 50/449 - Séparateurs, membranes ou diaphragmes caractérisés par le matériau ayant une structure en couches
• H01M 50/409 - Séparateurs, membranes ou diaphragmes caractérisés par le matériau
• H01M 50/411 - Matériau organique
• H01M 50/44 - Matériau fibreux
• H01M 50/403 - Procédés de fabrication des séparateurs, des membranes ou des diaphragmes
• H01M 10/05 - Accumulateurs à électrolyte non aqueux
• H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium

Abrégé

gggggg. The separator is used in the secondary battery cell, such that the secondary battery cell has both high energy density and high reliability.

Classes IPC  ?

• H01M 50/449 - Séparateurs, membranes ou diaphragmes caractérisés par le matériau ayant une structure en couches
• H01M 50/409 - Séparateurs, membranes ou diaphragmes caractérisés par le matériau
• H01M 50/414 - Résines synthétiques, p. ex. thermoplastiques ou thermodurcissables
• H01M 50/403 - Procédés de fabrication des séparateurs, des membranes ou des diaphragmes
• H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium

Abrégé

Provided in the present disclosure are a silicon-containing organic resin and a manufacturing method therefor, a silicon-containing organic resin dispersion liquid, a separator, a secondary battery cell, a battery apparatus, and an electrical apparatus. The separator comprises a porous base film and a porous coating located on at least one side of the porous base film. The porous coating comprises a silicon-containing organic resin; the silicon-containing organic resin comprises agglomerate particles of primary particles. The secondary battery cell has both high specific energy and good cycle performance.

Classes IPC  ?

• H01M 50/449 - Séparateurs, membranes ou diaphragmes caractérisés par le matériau ayant une structure en couches
• H01M 50/414 - Résines synthétiques, p. ex. thermoplastiques ou thermodurcissables
• C08F 230/08 - Copolymères de composés contenant un ou plusieurs radicaux aliphatiques non saturés, chaque radical ne contenant qu'une seule liaison double carbone-carbone et contenant du phosphore, du sélénium, du tellure ou un métal contenant un métal contenant du silicium
• H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium

Abrégé

The present application discloses a lithium plating window determination method and apparatus, an energy recovery method, a device, and a medium. The lithium plating window determination method comprises: in a target state of charge, charging a target battery on the basis of a first charging rate; determining a current anode potential and a current internal resistance potential of the target battery when charged at the first charging rate; and when the current anode potential and the current internal resistance potential meet a preset condition, determining a lithium plating window of the target battery on the basis of the first charging rate. According to the method, the lithium plating window of the target battery is determined on the basis of the current anode potential and the current internal resistance potential of the target battery charged on the basis of the first charging rate in the target state of charge, which is beneficial to improving the accuracy of lithium plating window determination.

Classes IPC  ?

• H01M 10/42 - Procédés ou dispositions pour assurer le fonctionnement ou l'entretien des éléments secondaires ou des demi-éléments secondaires

Abrégé

Provided in the present application are a battery cell, a battery apparatus and an electrical apparatus. The battery cell comprises a positive electrode sheet, the positive electrode sheet comprising a positive electrode current collector and a positive electrode film layer. A first film layer of the positive electrode film layer is provided at a lower layer, the first film layer comprising a first transition metal oxide, the lithium-containing first transition metal oxide comprising a first doping element, and the mass content of manganese in the lithium-containing first transition metal oxide being a1; and a second film layer is provided at an upper layer, the second film layer comprising a lithium-containing second transition metal oxide, the lithium-containing second transition metal oxide comprising an optional second doping element, the mass content of manganese in the lithium-containing second transition metal oxide being a2, a1>a2, and the first doping element and the second doping element each independently comprising one or more elements of Na, K, Be, Mg, Ca, Group IIIA, Group IB, Group IIB, Group IIIB, Group IVB, Group VB, Group VIB and Group VIII.

Classes IPC  ?

• H01M 10/058 - Structure ou fabrication

Abrégé

A polymer, a preparation method therefor, a perovskite cell, a photovoltaic module, an electrical apparatus, and a power generation apparatus. The perovskite cell comprises a hole transport layer and a perovskite layer which are successively arranged in the thickness direction of the perovskite cell, the hole transport layer comprising a polymer. The polymer comprises a first repetitive unit and a second repetitive unit, at least one of the first repetitive unit and the second repetitive unit comprising a hole transport material. The technical solution of the present application can improve the stability of perovskite cells.

Classes IPC  ?

• H10K 30/50 - Dispositifs photovoltaïques [PV]
• H10K 30/86 - Couches à haute mobilité des trous, p. ex. de transport des trous ou couches de blocage des électrons

Abrégé

Provided in the embodiments of the present application are a power supply apparatus, and a method for generating a superimposed voltage, which apparatus and method can effectively improve the insulation performance of an energy storage device. The power supply apparatus comprises: an alternating-current voltage generation apparatus, which is used for generating an alternating-current voltage; and a pulse voltage generation apparatus, which is used for generating a pulse voltage, wherein the power supply apparatus is used for outputting a superimposed voltage obtained by superimposing the pulse voltage and the alternating-current voltage.

Classes IPC  ?

• H02M 1/00 - Détails d'appareils pour transformation

Abrégé

Disclosed in the present application are a battery cell and a preparation method therefor, a positive electrode active material and a preparation method therefor, a positive electrode sheet, a battery apparatus, and an electric apparatus. The battery cell comprises a positive electrode sheet, the positive electrode sheet comprising a current collector and a positive electrode active material layer provided on at least one side of the current collector, the positive electrode active material layer comprising a positive electrode active material, the positive electrode active material comprising an O3-type layered metal oxide, and the layered metal oxide comprising a Ti element; in a positive electrode active material particle containing the layered metal oxide, the Ti element is distributed inside the particle and on a surface of the particle, and a distribution concentration of the Ti element inside the particle is greater than a distribution concentration of the Ti element on the surface of the particle. This allows for voltage windows of a positive electrode active material and a battery cell to be increased while maintaining the cycle stability of the positive electrode active material, and improves battery cell energy density.

Classes IPC  ?

• H01M 4/485 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques d'oxydes ou d'hydroxydes mixtes pour insérer ou intercaler des métaux légers, p. ex. LiTi2O4 ou LiTi2OxFy

Abrégé

The present application provides a cylindrical battery cell, a battery device and an electric device. The cylindrical battery cell comprises a casing, an end cover, and an electrode assembly; at least one end of the casing along the axial direction of the cylindrical battery cell is provided with an opening, the material of the casing comprises steel, the outer diameter of the casing is D, and D is greater than or equal to 40 mm; the end cover seals the opening, the end cover and the casing together define a receiving space, and the material of the end cover comprises steel; the electrode assembly is received in the receiving space; and the end cover and the casing are welded to form a weld portion, the effective weld penetration depth of the weld portion is H, and H is greater than or equal to 0.15 mm and less than or equal to 0.9 mm. The effective weld penetration depth of the weld portion formed by welding the end cover and the casing is controlled within the range of 0.15 mm to 0.9 mm, thereby increasing the welding strength between the end cover and the casing, reducing the risk of welding failure between the end cover and the casing, and lowering the welding difficulty between the end cover and the casing. In this way, both the welding strength and the welding difficulty between the end cover and the casing are taken into account, prolonging the service life of the cylindrical battery cell.

Classes IPC  ?

• H01M 50/107 - Boîtiers primairesFourreaux ou enveloppes caractérisés par leur forme ou leur structure physique ayant une section transversale courbe, p. ex. ronde ou elliptique

Abrégé

Provided are a battery apparatus (100) and an electrical device. The battery apparatus (100) comprises a battery cell assembly (10), a thermal management component (20), and a housing (30). The battery cell assembly (10) comprises a plurality of aligned battery cells (11), and each battery cell (11) is provided with an end cover (110) and electrode terminals (112) protruding from the end cover (110). Shoulder portions (11a) of the plurality of battery cells (11) are aligned to form a shoulder region. The thermal management component (20) comprises a first heat exchange plate (21), the first heat exchange plate (21) being disposed in the shoulder region. The housing (30) comprises a first cover (31), a second cover (32), and a frame (33) provided with openings (33a) at two ends thereof. The first cover (31) and the second cover (32) respectively cover the openings (33a) at the two ends of the frame (33) to form an accommodating space. The battery cell assembly (10) and the thermal management component (20) are arranged in the accommodating space. The first heat exchange plate (21) is arranged to face the first cover (31). The shoulder portions (11a) of the end covers (110) are lower than the electrode terminals (112), so that the space utilization rate of the housing (30) can be improved by using the space of the shoulder portions (11a) of the end covers (110) inside the housing (30), thereby increasing the energy density of the battery apparatus (100).

Classes IPC  ?

• H01M 10/613 - Refroidissement ou maintien du froid
• H01M 10/625 - Véhicules
• H01M 10/647 - Éléments prismatiques ou plans, p. ex. éléments de type poche
• H01M 10/6555 - Barres ou plaques disposées entre les éléments
• H01M 50/147 - Couvercles

Abrégé

A battery cell, a battery apparatus and an electrical device. The battery cell comprises: a casing provided with an accommodating space, the casing comprising a first wall part, and the first wall part being provided with a pressure relief mechanism; an electrode assembly provided in the accommodating space; and a bottom support plate provided in the accommodating space, arranged between the first wall part and the electrode assembly in a third direction, and used for supporting the electrode assembly. The bottom support plate comprises a plate body and a first support part. The plate body has a first region and second region arranged in a second direction, the orthographic projection of the pressure relief mechanism on the plate body in the third direction being located in the first region. At least one first support part is provided on the side of the second region facing the first wall part, the size of the first support part in the first direction being less than L1, so that a gap is formed between the plate body and the first wall part. The gap connects a space located on the side of the plate body facing away from the pressure relief mechanism to the pressure relief mechanism.

Classes IPC  ?

• H01M 50/30 - Aménagements pour faciliter l’échappement des gaz
• H01M 50/15 - Couvercles caractérisés par leur forme pour des cellules prismatiques ou rectangulaires
• H01M 50/103 - Boîtiers primairesFourreaux ou enveloppes caractérisés par leur forme ou leur structure physique prismatique ou rectangulaire

Abrégé

2323233. The positive electrode sheet is applied to the solid-state battery cell, which can reduce the capacity degradation rate of the solid-state battery cell and improve the cycle performance of the solid-state battery cell.

Classes IPC  ?

• H01M 4/131 - Électrodes à base d'oxydes ou d'hydroxydes mixtes, ou de mélanges d'oxydes ou d'hydroxydes, p. ex. LiCoOx

Abrégé

The present application relates to the technical field of batteries, and in particular to a metal battery cell and a preparation method therefor, a battery device, and an electric device. The metal battery cell comprises a positive electrode sheet, a negative electrode sheet, a separator, and an electrolyte solution, wherein the negative electrode sheet comprises a negative electrode current collector and a gel polymer layer stacked on at least one surface of the negative electrode current collector, and the gel polymer layer has a hollow structure. In the metal battery cell in embodiments of the present application, on the basis of the special gel polymer layer formed on the negative electrode sheet, the safety performance of the battery is further improved on the basis that the battery has good initial efficiency performance.

Classes IPC  ?

• H01M 10/0565 - Matériaux polymères, p. ex. du type gel ou du type solide
• H01M 4/13 - Électrodes pour accumulateurs à électrolyte non aqueux, p. ex. pour accumulateurs au lithiumLeurs procédés de fabrication

Abrégé

Disclosed in the present disclosure are an electrical signal control method and apparatus for an energy storage system, and a device, a medium and a product. The method comprises: on the basis of an expected value and actual value of a direct-current electrical signal output by an energy storage system, determining the error of the direct-current electrical signal and a sliding surface; performing proportional-integral regulation on the error by means of a target controller, performing sliding-mode regulation on the sliding surface, and determining an adjusted value of the direct-current electrical signal; at least on the basis of a reference direct-current electrical signal and the average electrical signal of one sub-module in the energy storage system, determining the number N of input modules, wherein the reference direct-current electrical signal is the sum of the adjusted value of the direct-current electrical signal and the expected value of the direct-current electrical signal, N being an integer greater than zero; and by means of an energy storage valve control module of the energy storage system, controlling N sub-modules in the energy storage system to be turned on, such that the energy storage system outputs the direct-current electrical signal on the basis of output capabilities of the N sub-modules.

Classes IPC  ?

• H02J 3/28 - Dispositions pour l'équilibrage de charge dans un réseau par emmagasinage d'énergie

Abrégé

The present application discloses a solar cell, an electrical apparatus, and a power generation apparatus. The solar cell at least comprises a perovskite layer, an electron transport layer, and a passivation layer. The electron transport layer is located on one side of the perovskite layer, and the passivation layer is disposed on the side of the perovskite layer facing the electron transport layer. The passivation layer comprises first cations and second cations. The first cations comprise polyammonium organic cations, and the second cations comprise fluorine-containing monoammonium organic cations. The present application uses the passivation layer to alleviate surface defect issues of the perovskite and to mitigate issues with the contact interface between the perovskite and the electron transport layer, thereby improving the photoelectric conversion efficiency of the solar cell.

Classes IPC  ?

• H10K 30/88 - PassivationConteneursEncapsulations
• H10K 71/00 - Fabrication ou traitement spécialement adaptés aux dispositifs organiques couverts par la présente sous-classe

Abrégé

The present disclosure provides a solar cell, a photovoltaic module, a power generation device, an electric device, and a polymer. The solar cell comprises a first electrode, a hole transport layer, a perovskite light-absorbing layer, and a second electrode that are stacked in sequence. The hole transport layer comprises a self-assembled monolayer, the self-assembled monolayer comprises a polymer, and the polymer comprising repeating units of formula (I). In formula (I), ArD represents an aromatic electron-donating unit; ArA represents an aromatic electron-withdrawing unit; L represents a linking group having two linking sites; A represents an oxyacid group or a corresponding salt thereof; and m is an integer from 0 to 10.

Classes IPC  ?

• H10K 85/10 - Polymères ou oligomères organiques

Abrégé

Disclosed in the present application are a battery cell, a battery device and an electric device. The battery cell comprises a housing, an end cover, an electrode assembly, adapter mechanisms, an insulation member and support structures. The housing forms an accommodating cavity having an opening. The end cover covers the opening, and electrode terminals are provided on the end cover. The adapter mechanisms are arranged between the electrode assembly and the end cover, and are electrically connected to the electrode assembly and the electrode terminals. The insulation member is arranged between the adapter mechanisms and the end cover, the support structures are arranged between the adapter mechanisms and the end cover, the support structures are insulation structures, and the melting point of each support structure is higher than the melting point of the insulation member. The support structures are arranged between the end cover and the insulation member, the end cover is provided with snap-fit parts, and the support structures are mounted to the snap-fit parts; or the support structures are arranged between the adapter mechanisms and the insulation member; or the support structures pass through avoidance holes in the insulation member.

Classes IPC  ?

• H01M 50/593 - Éléments d’espacementPlaques d’isolation

Abrégé

The present application provides a battery cell, a battery apparatus, an electrical apparatus, and a separator. The battery cell comprises a positive electrode sheet, a negative electrode sheet, and a separator, the separator being located between the positive electrode sheet and the negative electrode sheet. The separator comprises a porous base film and a coating disposed on at least one side of the porous base film. The coating comprises organic compound particles and a first binder. The first binder is used to bond the organic compound particles to the porous base film. The morphology of the organic compound particles is spherical or spheroidal. The length of a single organic compound particle is A, and the width of the single organic compound particle is B, wherein 1≤A:B≤5. The technical solution of the present application is beneficial to improving the voltage breakdown resistance of a separator and improving the cycle performance of a battery cell.

Classes IPC  ?

• H01M 50/411 - Matériau organique
• H01M 50/463 - Séparateurs, membranes ou diaphragmes caractérisés par leur forme
• H01M 50/42 - Résines acryliques
• H01M 50/449 - Séparateurs, membranes ou diaphragmes caractérisés par le matériau ayant une structure en couches
• H01M 50/403 - Procédés de fabrication des séparateurs, des membranes ou des diaphragmes
• H01M 50/457 - Séparateurs, membranes ou diaphragmes caractérisés par le matériau ayant une structure en couches comprenant au moins trois couches
• H01M 50/491 - Porosité

Abrégé

Provided in the present application are a metal battery cell, a battery device, an electric device and a separator. The metal battery cell comprises an electrode assembly and a shell for accommodating the electrode assembly, wherein the electrode assembly comprises a positive electrode sheet, a negative electrode sheet and a separator; the separator is located between the positive electrode sheet and the negative electrode sheet, and comprises a porous base film and a coating arranged on at least one side of the porous base film; the coating comprises organic compound particles and a first binder; the first binder is used for bonding the organic compound particles to the porous base film; the organic compound particles have a spherical or near-spherical morphology; and the roundness A of the organic compound particles satisfies: 0.5≤A≤1.0. The technical solution of the present application is beneficial for improving the dendrite resistance of the separator, thereby improving the storage performance and cycle performance of the battery cell.

Classes IPC  ?

• C08F 230/08 - Copolymères de composés contenant un ou plusieurs radicaux aliphatiques non saturés, chaque radical ne contenant qu'une seule liaison double carbone-carbone et contenant du phosphore, du sélénium, du tellure ou un métal contenant un métal contenant du silicium
• H01M 50/411 - Matériau organique

Abrégé

Provided in the present application are a battery cell, a battery device, an electric device and a separator. The battery cell comprises a positive electrode sheet, a negative electrode sheet and a separator, wherein the separator is located between the positive electrode sheet and the negative electrode sheet; the separator comprises a porous base film and a coating arranged on at least one side of the porous base film; the coating comprises heat-resistant particles and first binder particles; the first binder particles are embedded in the heat-resistant particles and form protrusions on the surface of the coating; and the heat-resistant particles comprise organic compound particles having a spherical or near-spherical morphology. The technical solution of the present application is beneficial for improving the storage performance and cycle performance of the battery cell in a high-temperature environment.

Classes IPC  ?

• H01M 50/411 - Matériau organique
• C08F 230/08 - Copolymères de composés contenant un ou plusieurs radicaux aliphatiques non saturés, chaque radical ne contenant qu'une seule liaison double carbone-carbone et contenant du phosphore, du sélénium, du tellure ou un métal contenant un métal contenant du silicium

Abrégé

The present application provides a battery cell, a battery apparatus, and an electric device. The battery cell comprises a positive electrode sheet, a negative electrode sheet and a separator, wherein the separator is located between the positive electrode sheet and the negative electrode sheet. The separator comprises a porous base membrane and a coating arranged on at least one side of the porous base membrane, wherein the coating comprises organic compound particles. The morphology of the organic compound particles is spherical or quasi-spherical; and the Dn50 of the organic compound particles satisfies: 100 nm≤Dn50≤700 nm, wherein Dn50 refers to the corresponding particle size when the cumulative number distribution of particles reaches 50% in a particle size number distribution curve of the organic compound particles. The technical solution of the present application is beneficial for improving the cycle performance of the battery cell.

Classes IPC  ?

• C08F 230/08 - Copolymères de composés contenant un ou plusieurs radicaux aliphatiques non saturés, chaque radical ne contenant qu'une seule liaison double carbone-carbone et contenant du phosphore, du sélénium, du tellure ou un métal contenant un métal contenant du silicium
• H01M 50/414 - Résines synthétiques, p. ex. thermoplastiques ou thermodurcissables
• H01M 50/449 - Séparateurs, membranes ou diaphragmes caractérisés par le matériau ayant une structure en couches
• H01M 10/054 - Accumulateurs à insertion ou intercalation de métaux autres que le lithium, p. ex. au magnésium ou à l'aluminium
• H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium

Abrégé

Provided in the present application are a battery cell, a battery device and an electric device. The battery cell comprises a positive electrode sheet, a negative electrode sheet and a separator, wherein the separator is located between the positive electrode sheet and the negative electrode sheet; the separator comprises a porous base film and a coating arranged on at least one side of the porous base film; the coating comprises heat-resistant particles, and the heat-resistant particles comprise a cross-linked polymer; and the cross-linking degree of the cross-linked polymer is 80%-97%. The technical solution of the present application is beneficial to improvement of the reliability of the battery cell.

Classes IPC  ?

• C08F 230/08 - Copolymères de composés contenant un ou plusieurs radicaux aliphatiques non saturés, chaque radical ne contenant qu'une seule liaison double carbone-carbone et contenant du phosphore, du sélénium, du tellure ou un métal contenant un métal contenant du silicium
• H01M 50/411 - Matériau organique
• H01M 50/443 - Matériau particulaire
• H01M 50/449 - Séparateurs, membranes ou diaphragmes caractérisés par le matériau ayant une structure en couches
• H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium

Abrégé

Provided in the present application are a battery cell, a battery device and an electric device. The battery cell comprises a positive electrode sheet, a negative electrode sheet and a separator, wherein the separator is located between the positive electrode sheet and the negative electrode sheet; the separator comprises a porous base film and a coating arranged on at least one side of the porous base film; the coating comprises organic compound particles having a spherical or near-spherical morphology; and in the cross section of the coating in the thickness direction of the separator, on the basis of the total number of the organic compound particles, particles having a particle size R1 that satisfies 0

Classes IPC  ?

• H01M 50/443 - Matériau particulaire
• H01M 50/449 - Séparateurs, membranes ou diaphragmes caractérisés par le matériau ayant une structure en couches
• H01M 50/411 - Matériau organique
• H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
• C08F 230/08 - Copolymères de composés contenant un ou plusieurs radicaux aliphatiques non saturés, chaque radical ne contenant qu'une seule liaison double carbone-carbone et contenant du phosphore, du sélénium, du tellure ou un métal contenant un métal contenant du silicium

Abrégé

A battery includes: a battery cell; a box, configured to accommodate the battery cell, where the box includes a first wall and a second wall that are oppositely arranged, the first wall and the second wall intersect with a first direction, a first cross beam is disposed between the first wall and the second wall, the first cross beam includes a third wall that intersects with the first direction and is close to the first wall, a gap is disposed between the third wall and the first wall, and the first cross beam is provided with a first through hole extending along the first direction; and a mounting structure, configured to at least partially pass through the first through hole and abut against the third wall in the gap.

Classes IPC  ?

• H01M 50/262 - MonturesBoîtiers secondaires ou cadresBâtis, modules ou blocsDispositifs de suspensionAmortisseursDispositifs de transport ou de manutentionSupports avec des moyens de fixation, p. ex. des serrures
• B60L 50/64 - Détails de construction des batteries spécialement adaptées aux véhicules électriques
• H01M 10/625 - Véhicules
• H01M 10/647 - Éléments prismatiques ou plans, p. ex. éléments de type poche
• H01M 10/6554 - Barres ou plaques
• H01M 50/209 - Bâtis, modules ou blocs de multiples batteries ou de multiples cellules caractérisés par leur forme adaptés aux cellules prismatiques ou rectangulaires
• H01M 50/249 - MonturesBoîtiers secondaires ou cadresBâtis, modules ou blocsDispositifs de suspensionAmortisseursDispositifs de transport ou de manutentionSupports spécialement adaptés aux aéronefs ou aux véhicules, p. ex. aux automobiles ou aux trains

Abrégé

A non-aqueous electrolyte solution comprises additives, wherein the additives comprise a first additive and a second additive, the first additive is any one or more cyclic sulfate compounds having a structure represented by general formula (I), and the second additive comprises one or more of lithium monofluorophosphate, lithium difluorophosphate, lithium tetrafluoroborate, a compound represented by general formula (II), and fluorosulfonates. A non-aqueous electrolyte solution comprises additives, wherein the additives comprise a first additive and a second additive, the first additive is any one or more cyclic sulfate compounds having a structure represented by general formula (I), and the second additive comprises one or more of lithium monofluorophosphate, lithium difluorophosphate, lithium tetrafluoroborate, a compound represented by general formula (II), and fluorosulfonates.

Classes IPC  ?

• H01M 10/42 - Procédés ou dispositions pour assurer le fonctionnement ou l'entretien des éléments secondaires ou des demi-éléments secondaires
• B60L 50/60 - Propulsion électrique par source d'énergie intérieure au véhicule utilisant de la puissance de propulsion fournie par des batteries ou des piles à combustible utilisant de l'énergie fournie par des batteries
• H01M 10/0567 - Matériaux liquides caracterisés par les additifs

Abrégé

The present application discloses an electrolyte solution for a lithium secondary battery, a secondary battery, and an electrical device. The electrolyte solution for a lithium secondary battery includes a sulfate and fluorosulfonate ions, and a molar ratio of the sulfate to the fluorosulfonate ions is (8-223):1.

Classes IPC  ?

• H01M 10/0567 - Matériaux liquides caracterisés par les additifs
• H01M 4/02 - Électrodes composées d'un ou comprenant un matériau actif
• H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
• H01M 10/052 - Accumulateurs au lithium
• H01M 10/0568 - Matériaux liquides caracterisés par les solutés
• H01M 10/0569 - Matériaux liquides caracterisés par les solvants

Abrégé

A non-aqueous electrolyte, a secondary battery and an electric device are described. The non-aqueous electrolyte comprises additives; the additives comprise a first additive and a second additive; the first additive is any one or more cyclic sulfate compounds having a structure represented by general formula (I); A non-aqueous electrolyte, a secondary battery and an electric device are described. The non-aqueous electrolyte comprises additives; the additives comprise a first additive and a second additive; the first additive is any one or more cyclic sulfate compounds having a structure represented by general formula (I); A non-aqueous electrolyte, a secondary battery and an electric device are described. The non-aqueous electrolyte comprises additives; the additives comprise a first additive and a second additive; the first additive is any one or more cyclic sulfate compounds having a structure represented by general formula (I); the second additive is an organic base additive; the organic base additive comprises any one or more of groups consisting of 5-12 membered aromatic heterocyclic organic bases or 5-12 membered aliphatic heterocyclic organic bases; ring structures in the 5-12 membered aromatic heterocyclic organic bases and the 5-12 membered aliphatic heterocyclic organic bases contain nitrogen atoms.

Classes IPC  ?

• H01M 10/0567 - Matériaux liquides caracterisés par les additifs
• C07D 327/10 - Composés hétérocycliques contenant des cycles comportant des atomes de soufre et d'oxygène comme uniques hétéro-atomes du cycle deux atomes d'oxygène et un atome de soufre, p. ex. sulfates cycliques
• H01M 4/02 - Électrodes composées d'un ou comprenant un matériau actif
• H01M 4/13 - Électrodes pour accumulateurs à électrolyte non aqueux, p. ex. pour accumulateurs au lithiumLeurs procédés de fabrication
• H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium

Abrégé

A composite positive material and a preparation method therefor, a positive electrode plate comprising same, a battery, and an electrical apparatus. The composite positive electrode material comprises a positive electrode active material and a coating layer, wherein the coating layer coats at least part of the surface of the positive electrode active material, the coating layer comprises a composite material, the composite material comprises particles containing elemental M and a lithium-ion conductor material attached onto the surface of the particles containing elemental M, and M comprises at least one of S, Se and Te.

Classes IPC  ?

• H01M 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p. ex. liants, charges
• B60L 50/60 - Propulsion électrique par source d'énergie intérieure au véhicule utilisant de la puissance de propulsion fournie par des batteries ou des piles à combustible utilisant de l'énergie fournie par des batteries
• H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
• H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy

Abrégé

This application provides an electrode assembly, a battery cell, a battery, and an electric device. The electrode assembly includes a negative electrode plate, a positive electrode plate, and a separator, where the negative electrode plate includes a negative electrode film layer, the negative electrode film layer including a fluorinated polymer, and the positive electrode plate includes a positive electrode film layer, the positive electrode film layer including a nitrile-based polymer material. Using this electrode assembly can significantly improve the cycle performance of batteries.

Classes IPC  ?

• H01M 10/42 - Procédés ou dispositions pour assurer le fonctionnement ou l'entretien des éléments secondaires ou des demi-éléments secondaires
• H01M 4/02 - Électrodes composées d'un ou comprenant un matériau actif
• H01M 4/04 - Procédés de fabrication en général
• H01M 4/131 - Électrodes à base d'oxydes ou d'hydroxydes mixtes, ou de mélanges d'oxydes ou d'hydroxydes, p. ex. LiCoOx
• H01M 4/136 - Électrodes à base de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFy
• H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p. ex. LiMn2O4 ou LiMn2OxFy
• H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
• H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFyEmploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p. ex. phosphates, silicates ou borates
• H01M 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p. ex. liants, charges
• H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium

Abrégé

Embodiments of this application provide a negative electrode plate, a battery cell, a battery, and an electric apparatus. The negative electrode plate includes a negative electrode current collector and a negative electrode film layer disposed on at least one side of the negative electrode current collector; where the negative electrode film layer includes a negative electrode active material and a binder, the negative electrode active material includes a silicon-based material, and the binder includes at least one of the following functional groups: hydroxyl, carboxyl, amino, cyano, ester, or vinyl. The technical solution of this application can improve cohesion and adhesion of the negative electrode plate, reducing powder shedding and demolding during production, thereby enhancing cycling performance of the battery.

Classes IPC  ?

• H01M 4/134 - Électrodes à base de métaux, de Si ou d'alliages
• H01M 4/02 - Électrodes composées d'un ou comprenant un matériau actif
• H01M 4/133 - Électrodes à base de matériau carboné, p. ex. composés d'intercalation du graphite ou CFx
• H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
• H01M 4/38 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'éléments simples ou d'alliages
• H01M 4/587 - Matériau carboné, p. ex. composés au graphite d'intercalation ou CFx pour insérer ou intercaler des métaux légers
• H01M 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p. ex. liants, charges

Abrégé

This application relates to batteries and provides a method, device, and system for controlling battery temperature. The method includes obtaining temperatures of two batteries in an electric device, calculating the temperature difference between them, and when the difference is greater than a set threshold, cooling the battery with the higher temperature. This keeps the batteries at similar temperatures, improving overall performance and safety, and giving users a more stable experience.

Classes IPC  ?

• H01M 10/617 - Types de commande de la température pour réaliser l'uniformité ou une répartition désirée de la température
• H01M 10/48 - Accumulateurs combinés à des dispositions pour mesurer, tester ou indiquer l'état des éléments, p. ex. le niveau ou la densité de l'électrolyte
• H01M 10/613 - Refroidissement ou maintien du froid
• H01M 10/6556 - Composants solides comprenant des canaux d'écoulement ou des tubes pour un échange de chaleur

Abrégé

This application relates to a battery module processing method and system, a computer device, a medium, and a program product. Embodiments of this application provide a battery module processing method, characterized in that the method includes: in response to determining that a heated battery module exists on a conveyor line, generating an instruction for grabbing the battery module from the conveyor line; determining a type of the battery module; and in response to determining that the type of the battery module is a first type, generating an instruction for placing the battery module into a resting warehouse for resting, where the first type indicates that the battery module requires resting after heating.

Classes IPC  ?

• H01M 10/613 - Refroidissement ou maintien du froid
• H01M 10/04 - Structure ou fabrication en général
• H01M 10/615 - Chauffage ou maintien de la chaleur
• H01M 10/633 - Systèmes de commande caractérisés par des algorithmes, des diagrammes, des détails de logiciel ou similaires

Abrégé

111≤0.2 mm. The raised portion is pre-deformed on the inner side of the weak portion, facilitating cracking and pressure relief of the weak portion. Under the same burst pressure, the thickness of the weak portion can be larger, and the weak portion is not prone to cracking in advance under stress, thereby prolonging the service life of the battery cell.

Classes IPC  ?

• H01M 50/342 - Aménagements non refermables
• H01M 50/30 - Aménagements pour faciliter l’échappement des gaz
• H01M 50/147 - Couvercles

Abrégé

The present application relates to the field of batteries, and provides a battery cell, a battery apparatus, and an electric apparatus. The battery cell comprises a casing and a pressure relief mechanism, the casing having a wall portion, and the pressure relief mechanism being disposed on the wall portion. The base material of the pressure relief mechanism is iron. The pressure relief mechanism is provided with a first groove, and the pressure relief mechanism is configured to crack along at least part of the first groove when the pressure inside the casing reaches a threshold, so as to release the pressure. The first groove has a first groove bottom surface, the first groove bottom surface is a cambered surface recessed in a direction away from the opening of the first groove, the cambered surface is arc-shaped on the cross section of the first groove, and the cross section is perpendicular to the extension direction of the first groove. By arranging the groove bottom surface of the first groove as a cambered surface recessed in a direction away from the opening of the first groove, flow of a material when the first groove is formed by stamping is facilitated, which is beneficial to mitigating stress concentration, helping to keep the burst pressure of a plurality of battery cells consistent when the plurality of battery cells are manufactured, thereby improving the reliability of the battery cells.

Classes IPC  ?

• H01M 50/342 - Aménagements non refermables

Abrégé

Provided in the present application are a battery cell, a battery device and an electric device. The battery cell comprises: a casing; an electrode assembly, which is located in the casing, wherein the electrode assembly comprises an electrode body and a tab, the electrode body comprising a first end face and a second end face arranged opposite each other in a first direction, and a side face connecting the first end face and the second end face, and the tab being connected to the electrode body and protruding from at least one of the first end face and the second end face; and a heat-conducting assembly, which comprises an insulating member and a heat-conducting member, wherein at least part of the insulating member forms an accommodating cavity, and the heat-conducting member is arranged in the accommodating cavity; the insulating member covers at least the side face; the heat-conducting member comprises a first heat-conducting sheet, the first heat-conducting sheet being arranged on at least part of the side face and being in thermally conductive connection with the side face; the thermal conductivity of the heat-conducting member is greater than that of the insulating member and that of the casing.

Classes IPC  ?

• H01M 10/613 - Refroidissement ou maintien du froid
• H01M 10/617 - Types de commande de la température pour réaliser l'uniformité ou une répartition désirée de la température

Abrégé

Provided in the present application are a battery cell, a battery apparatus and an electrical apparatus. The battery cell comprises: a casing; an electrode assembly, located in the casing, the electrode assembly comprising an electrode body and tabs, the electrode body comprising a first end face and a second end face arranged opposite to each other in a first direction, and a side face connected between the first end face and the second end face, and the tabs being connected to the electrode body and extending out of at least one of the first end face and the second end face; and a thermal conduction assembly, comprising a first thermal conduction part, the first thermal conduction part being thermally connected to the side surface, the thermal conductivity of the thermal conduction assembly being greater than that of the casing, and the thermal conduction assembly and the electrode assembly being insulated from each other. The casing comprises an opening in the first direction, and the battery cell further comprises a top cover assembly, the top cover assembly covering the opening. The top cover assembly has electrode terminals, the electrode terminals being connected to the tabs. The thermal conduction assembly further comprises a second thermal conduction part, the second thermal conduction part being thermally connected to the tabs and thermally connected to the first thermal conduction part.

Classes IPC  ?

• H01M 10/617 - Types de commande de la température pour réaliser l'uniformité ou une répartition désirée de la température

Abrégé

The present application discloses a winding machine and a winding method. The winding machine comprises: a winding pin for winding an electrode sheet to obtain a first cell assembly; a shaping device arranged downstream of the winding pin and used for shaping the first cell assembly to obtain the shaped first cell assembly; a measurement light curtain arranged on the shaping device, electrically connected to a controller, and used for sending a first electrical signal to the controller when the shaped first cell assembly is located at the shaping device, wherein the first electrical signal is used for representing a first tab width of the shaped first cell assembly; and the controller used for determining the first tab width on the basis of the first electrical signal, determining a first tab misalignment amount of the shaped first cell assembly on the basis of the first tab width, adjusting the diameter of the winding pin on the basis of the first tab misalignment amount, and controlling the winding pin having undergone diameter adjustment to wind the electrode sheet, so as to obtain a second cell assembly.

Classes IPC  ?

• H01M 10/04 - Structure ou fabrication en général
• H01M 10/0587 - Structure ou fabrication d'accumulateurs ayant uniquement des éléments de structure enroulés, c.-à-d. des électrodes positives enroulées, des électrodes négatives enroulées et des séparateurs enroulés
• H01M 50/538 - Connexions de plusieurs conducteurs ou languettes d’électrodes empilées enroulées ou pliées

Abrégé

Provided in the present application are a battery cell, a manufacturing method for the battery cell, a battery and an electric device. The battery cell comprises an electrode assembly, a casing and a support member. The casing is configured to accommodate the electrode assembly, and there is a gap between at least part of the outer periphery of the electrode assembly and an inner wall of the casing. The support member is arranged between the electrode assembly and the inner wall of the casing and is configured to fill the gap.

Classes IPC  ?

• H01M 50/593 - Éléments d’espacementPlaques d’isolation
• H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium