An electrode sheet fabrication device includes a support roll that supports an electrode sheet, a pressing roll which faces the support roll with the electrode sheet sandwiched between the pressing roll and the support roll and at least whose outer circumference surface is made of rubber, and a controller. In the controller, a movement controller moves the pressing roll from a first position at which the pressing roll is separated from the electrode sheet toward a second position at which the pressing roll contacts the electrode sheet before conveyance of the electrode sheet starts. The conveyance controller conveys the electrode sheet after the pressing roll has moved to the second position. The pressing controller presses the pressing roll against the electrode sheet from the second position when conveyance of the electrode sheet is started or when a reference time has elapsed since conveyance of the electrode sheet was started.
B21B 37/46 - Commande de la vitesse des cylindres ou du moteur d'entraînement
B21B 1/24 - Méthodes de laminage ou laminoirs pour la fabrication des produits semi-finis de section pleine ou de profilésSéquence des opérations dans les trains de laminoirsInstallation d'une usine de laminage, p. ex. groupement de cagesSuccession des passes ou des alternances de passes pour laminer des bandes ou des feuilles en longueurs indéfinies selon un processus continu
B21B 39/02 - Avance du matériau ou soutien de celui-ciSystèmes de freinage ou de tension
2.
ELECTRODE SHEET PROCESSING METHOD AND ELECTRODE SHEET MANUFACTURING DEVICE
A processing method for an electrode sheet includes a preparing step, a heat applying step, and a stretching step. In the heat applying step, a surface temperature of a press roll is increased by the heat application control portion until the surface temperature of the reaches the reference temperature or more. The heat applying step is executed before the stretching step is executed. In the stretching step, the stretching control portion stretches the non-coated portion (non-formed portion) by the press roll.
B05C 11/02 - Appareils pour étaler ou répartir des liquides ou d'autres matériaux fluides déjà appliqués sur une surfaceRéglage de l'épaisseur du revêtement
An electrode sheet manufacturing device is a device for manufacturing an electrode sheet including a non-formed portion and an active material layer, and includes: a conveyor that conveys the electrode sheet; a support roll that supports the electrode sheet; a pressing roll including a rubber layer at a surface thereof and facing the support roll; and a driver that presses pressing roll against the support roll. The pressing roll sandwiches the non-formed portion together with the support roll. The electrode sheet manufacturing device stores a predetermined relationship between a conveyance speed of the electrode sheet and a pressing force of the driver, and controls the pressing force of the driver based on the conveyance speed of the electrode sheet and the stored relationship.
A failure mode analysis support method proposed herein is a computer-implemented failure mode analysis support method. The method includes: an input process of entering at least one piece of information that is subject to a failure mode analysis; and a process of asking a question to a conversational AI so that at least one failure mode that may occur in a product or a manufacturing process is answered based on the information having entered in the input process, to obtain an answer indicating the failure mode that may occur in the product or the manufacturing process.
For an electrode sheet manufacturing apparatus, a pressure roll is disposed so as to hold an unformed portion of the electrode sheet between the pressure roll and a support roll, except for a portion of the electrode sheet on which an active material layer is formed. The pressure roll is a rubber roll at least an outer circumferential surface of which is made of a rubber. The rubber satisfies the following expression: y1≥y2>0.8×y1, where y1 is the modulus of longitudinal elasticity of the rubber at 25° C. and y2 is the modulus of longitudinal elasticity of the rubber at 60° C.
METHOD OF PRODUCING POSITIVE ELECTRODE ACTIVE MATERIAL, METHOD OF PRODUCING POSITIVE ELECTRODE PLATE, AND METHOD OF PRODUCING NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
A method of producing a positive electrode active material includes: obtaining a mixture by mixing a nickel-containing compound and a lithium compound, the nickel-containing compound being at least one of a nickel-containing hydroxide and a nickel-containing oxide; obtaining a molded body by molding the mixture; and calcinating the molded body at 750 to 1000° C. under an oxygen atmosphere using a rotary kiln having a furnace having an inner wall composed of an alloy including Cr. A maximum diameter of the molded body is 18 to 50 mm, and a density of the molded body is 1.5 to 4 g/cm3.
C01G 53/506 - Oxydes complexes contenant du nickel et au moins un autre élément métallique contenant des métaux alcalins, p. ex. LiNiO2 contenant du manganèse du type (MnO2)n-, p. ex. Li(NixMn1-x)O2 ou Li(MyNixMn1-x-y)O2 contenant du lithium et du cobalt avec le rapport molaire du nickel par rapport à tous les métaux autres que les métaux alcalins supérieur ou égal à 0,5, p. ex. Li(MzNixCoyMn1-x-y-z)O2 avec x ≥ 0,5 avec le rapport molaire du nickel par rapport à tous les métaux autres que les métaux alcalins supérieur ou égal à 0,8, p. ex. Li(MzNixCoyMn1-x-y-z)O2 avec x ≥ 0,8
In an electrode sheet manufacturing device 1, a non-coated portion 12a (non-formed portion) of an electrode sheet 10 is stretched while being interposed between a support roll 61 and a press roll 62. The press roll 62 is a rubber roll including a rubber portion 62ab. A heat sink 64 is attached to the press roll 62.
A positive electrode active material includes a secondary particle in which primary particles are aggregated. A ratio (L11/L12) of an average value of maximum lengths L11 of first particles in a first direction and an average value of maximum lengths L12 of the first particles in a second direction as defined in the claims is 0.5 to 1.10. A ratio (L21/L22) of an average value of maximum lengths L21 of second particles in the first direction and an average value of maximum lengths L22 of the second particles in the second direction as defined in the claims is 1.40 or more. The second particles include oriented particles that have major axis directions radially oriented in the first direction and that have the average value of the maximum lengths L21 of 640 nm or less.
H01M 4/131 - Électrodes à base d'oxydes ou d'hydroxydes mixtes, ou de mélanges d'oxydes ou d'hydroxydes, p. ex. LiCoOx
H01M 4/02 - Électrodes composées d'un ou comprenant un matériau actif
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
9.
METHOD OF PRODUCING POSITIVE ELECTRODE ACTIVE MATERIAL, METHOD OF PRODUCING POSITIVE ELECTRODE PLATE, AND METHOD OF PRODUCING NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
A method of producing a positive electrode active material includes calcinating a mixture of a nickel-containing compound and a lithium compound introduced into a furnace of a rotary kiln at 750 to 1000° C. under an oxygen atmosphere. The nickel-containing compound is at least one of a nickel-containing hydroxide and a nickel-containing oxide. A layer of yttrium-chromium composite oxide is formed on an outermost surface of an inner wall of the furnace.
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
C01G 53/44 - Oxydes complexes contenant du nickel et au moins un autre élément métallique contenant des métaux alcalins, p. ex. LiNiO2 contenant du manganèse
A herein disclosed electricity storage pack includes plural electric storage devices, a side frame that is arranged at an end part in a aligned direction, and a cover that is arranged to cover plural electric storage devices and at least a part of the side frame. Herein, the electricity storage pack includes a partition wall that is formed in a plate shape, that is arranged between the side frame and the electric storage devices, and that has a contact point where it comes into contact with the cover, includes a first adhesion agent that is arranged on a surface where the electric storage device and the cover are opposed to each other, and includes a second adhesion agent that is arranged on an area in which the side frame, the partition wall, and the cover are opposed to each other and which is isolated from the first adhesion agent.
H01M 50/291 - MonturesBoîtiers secondaires ou cadresBâtis, modules ou blocsDispositifs de suspensionAmortisseursDispositifs de transport ou de manutentionSupports caractérisés par des éléments d’espacement ou des moyens de positionnement dans les racks, les cadres ou les blocs caractérisés par leur forme
H01M 50/209 - Bâtis, modules ou blocs de multiples batteries ou de multiples cellules caractérisés par leur forme adaptés aux cellules prismatiques ou rectangulaires
11.
NEGATIVE ELECTRODE AND ELECTRICITY STORAGE DEVICE INCLUDING NEGATIVE ELECTRODE
Provided is a technology that can suppress the capacity decrease after charge-discharge cycles in an electricity storage device containing silicon-containing graphite particles as a negative electrode active material. A negative electrode disclosed herein includes a negative electrode active material composed of silicon-containing graphite particles, a first binder, and a second binder. The silicon-containing graphite particles include graphite particles with voids and silicon-containing particles disposed in the voids. The first binder is styrene butadiene rubber with a glass-transition temperature of 1° C. or higher. The second binder is styrene butadiene rubber with a glass-transition temperature of lower than 1° C.
An electrode sheet manufacturing device manufactures an electrode sheet including a current collector, a non-formed portion, and an electrode active material layer. The electrode sheet manufacturing device includes a conveyance device, a support roll, a press roll, and a driving device. The press roll is arranged so as to be opposed to the support roll on a second surface of the electrode sheet. The press roll includes a shaft portion and a rubber portion. The rubber portion is wound around an outer peripheral surface of the shaft portion at least in an area that contacts the non-formed portion. A thickness of the rubber portion in a position that overlaps with an outer end of the non-formed portion is smaller than a thickness of the rubber portion in an area at a more inner side than the position that overlaps with the outer end.
A method for processing an electrode sheet includes a preparation step and an extension step. In the preparation step, a band-shaped electrode sheet in which an electrode active material layer is located on a current collector of metal foil, and the current collector includes a non-formed portion on which no electrode active material layer is located. In the extension step, the non-formed portion is extended by pressing a rubber roll against the non-formed portion of the electrode sheet while conveying the electrode sheet. The extension step uses the rubber roll with which an amount of change of an extension rate of the non-formed portion extended by the rubber roll becomes less than or equal to a predetermined reference change amount in a predetermined reference time.
A method of method of manufacturing an electrode sheet includes: a first pressing step of press-stretching an uncoated portion of the electrode sheet by a rubber roll while conveying the electrode sheet along a predetermined conveyance passage, a stepped roll pressing step of, after the first pressing step, conveying the electrode sheet while pressing the electrode sheet onto a stepped roll including a stepped portion at a part of the stepped roll coming into contact with a boundary region of the uncoated portion with an active material layer, the part coming into contact with the unformed portion having a larger diameter than other parts of the stepped roll coming into contact with the active material layer; and a second pressing step of, after the stepped roll pressing step, press-stretching the active material layer of the electrode sheet by roll-pressing.
A negative electrode active material layer of a herein disclosed negative electrode contains a chemical compound represented General formula (1) described below. Incidentally, each of R1 to R5 in the formula is independently selected from a group consisting of a hydrogen, an alkyl group, a hydroxy group, a cyano group, an aldehyde group, an ether group, an ester group, an amino group, and a phenyl group, R6 is the alkyl group, and at least 1 of the R1 to the R5 is the hydroxy group. According to the negative electrode containing the chemical compound having the above described configuration, it is possible to suitably inhibit an occurrence of an inside short circuit and a reduction of a battery capacity which are caused by a precipitation of a metal Li.
A negative electrode active material layer of a herein disclosed negative electrode contains a chemical compound represented General formula (1) described below. Incidentally, each of R1 to R5 in the formula is independently selected from a group consisting of a hydrogen, an alkyl group, a hydroxy group, a cyano group, an aldehyde group, an ether group, an ester group, an amino group, and a phenyl group, R6 is the alkyl group, and at least 1 of the R1 to the R5 is the hydroxy group. According to the negative electrode containing the chemical compound having the above described configuration, it is possible to suitably inhibit an occurrence of an inside short circuit and a reduction of a battery capacity which are caused by a precipitation of a metal Li.
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 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 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p. ex. liants, charges
H01M 10/0569 - Matériaux liquides caracterisés par les solvants
Provided is a technique to suppresses an increase in a resistance under a low temperature environment. The electricity storage device disclosed herein includes a positive electrode, a negative electrode, and a nonaqueous electrolytic solution. The negative electrode contains a silicon-containing graphite particle as the negative electrode active material, which is a graphite particle containing the silicon. The nonaqueous electrolytic solution contains EC, DMC, EMC, carboxylic acid ester whose carbon number is equal to or less than 4, and FEC, as the nonaqueous solvent. With a sum of the EC, the DMC, the EMC, and the carboxylic acid ester being 100 volume %, a volume of the carboxylic acid ester is 1 volume % to 30 volume %. A content amount of the FEC with respect to a whole of the nonaqueous solvent is 0.1 mass % to 5 mass %.
H01M 10/0569 - Matériaux liquides caracterisés par les solvants
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 4/134 - Électrodes à base de métaux, de Si ou d'alliages
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 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
17.
ELECTRODE SHEET MANUFACTURING DEVICET AND ELECTRODE SHEET MANUFACTURING METHOD
An electrode sheet manufacturing device manufactures an electrode sheet including a current collector, a non-formed portion, an electrode active material layer, and a protective layer. The electrode sheet manufacturing device includes a conveyance device, a support roll, a press roll, and a driving device. The press roll is arranged so as to be opposed to the support roll. The press roll includes a shaft portion and a rubber portion. The rubber portion is wound around an outer peripheral surface of the shaft portion at least in an area that contacts the non-formed portion. A thickness of the rubber portion in a position that overlaps with an inner end of the non-formed portion is smaller than a thickness of the rubber portion in an area at a more outer side than the position that overlaps with the inner end.
An electrode sheet manufacturing method includes a stepped roll pressing step of conveying an electrode sheet while pressing the electrode sheet onto a stepped roll that has a larger diameter at a part coming into contact with a boundary region of an uncoated portion with an active material layer than other parts coming into contact with other regions of the electrode sheet.
Provided is a method for disassembling a chemical battery, wherein a recovery rate of 95% or more for cobalt and nickel and a recovery rate of 80% or more for lithium are achieved for the chemical battery, and the method contributes to the recovery of valuable metals from the chemical battery. A method for disassembling a chemical battery comprises: an electrode assembly separation step in which the casing of the chemical battery is cut and the electrode assembly is taken out from the inside of the casing; a first peeling step in which a fixing portion of the electrode assembly obtained in the electrode assembly separation step is peeled off; and a second peeling step in which each of a positive electrode foil, a separator, and a negative electrode foil constituting the electrode assembly is peeled off. Another method for disassembling a chemical battery comprising a casing, an electrode assembly, an electrode terminal plate, and a current collector, the electrode assembly and the electrode terminal plate being electrically connected via the current collector, comprises a cutting step in which the casing and the current collector are cut. A method for disassembling a chemical battery comprising a casing, an electrode assembly, an electrode terminal plate, and a current collector comprises: a cutting step in which the casing and the current collector are cut; and an electrode assembly separation step in which the electrode assembly is extruded by an auxiliary unit.
H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
B09B 3/30 - Destruction de déchets solides ou transformation de déchets solides en quelque chose d'utile ou d'inoffensif impliquant un traitement mécanique
A positive electrode active material comprises a first active material and a second active material having an average particle size (D50) smaller than an average particle size (D50) of the first active material. The first active material is a lithium-(transition metal) composite oxide containing Ni at 75 mol % or more and Ti at 0.5 to 2.8 mol % relative to a total number of moles of metallic element except Li. The second active material is a lithium-(transition metal) composite oxide containing Ni at 75 mol % or more relative to a total number of moles of metallic element except Li. A content of Ti in the second active material is 0.1 mol % or less relative to the total number of moles of metallic element except Li. Ni disorder of the first active material is from 2.1 to 2.6%, and Ni disorder of the second active material is 2.0% or less.
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 4/131 - 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
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
21.
SYSTEM AND METHOD FOR DETERMINING A DETERIORATION STATUS OF A SECONDARY BATTERY
A deterioration status determination system includes a measuring unit that measures the battery temperature, battery current, and battery voltage, a storing unit, a capacity estimating unit that estimates the estimated charge capacity, a conforming discharge period detecting unit that detects a conforming discharge period in which a high C-rate discharge that conforms to discharge conditions is performed, a measured voltage drop acquiring unit that obtains a measured voltage drop amount that appears during the conforming discharge period, an estimated voltage drop acquiring unit that obtains an estimated voltage drop amount that is estimated to appear during the same period, and a determining unit that determines whether there is abnormal deterioration in the battery, from the measured voltage drop amount and the estimated voltage drop amount.
G01R 31/392 - Détermination du vieillissement ou de la dégradation de la batterie, p. ex. état de santé
G01R 31/374 - 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 avec des moyens pour corriger la mesure en fonction de la température ou du vieillissement
G01R 31/3842 - Dispositions pour la surveillance de variables des batteries ou des accumulateurs, p. ex. état de charge combinant des mesures de tension et de courant
H01M 10/42 - Procédés ou dispositions pour assurer le fonctionnement ou l'entretien des éléments secondaires ou des demi-éléments secondaires
22.
PARTICLES, POSITIVE ELECTRODE ACTIVE MATERIAL PARTICLES, METHOD OF PRODUCING THE SAME, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
The present disclosure relates to a method of producing particles that include first particles each having a core portion, a gap portion, and an outer portion and each made of a nickel-containing transition metal composite hydroxide. In the method of producing particles according to the present disclosure, a pH of the Taylor vortex reaction field at a liquid temperature of 25° C. is 12.5 or less, a first crystallization is performed in which the crystallization is allowed to proceed at an oxygen concentration of the Taylor vortex reaction field of 3.5 vol % or less, a second crystallization is performed in which the oxygen concentration of the Taylor vortex reaction field is changed to a range of 5 vol % to 65 vol % and the crystallization is allowed to proceed, and a duration of the first crystallization is from 40% to 90% of a total crystallization duration.
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
23.
SECONDARY BATTERY AND METHOD OF MANUFACTURING SAME
A secondary battery includes: an electrode assembly; a case that accommodates the electrode assembly, the case including a case main body provided with an opening and a sealing plate; an electrode terminal; and a current collecting portion, wherein the current collecting portion includes a first member having electric conductivity, the first member being joined to the electrode assembly, a second member having electric conductivity, the second member being fixed on an inner surface of the sealing plate, the second member being joined to the electrode terminal, and a third member having electric conductivity, the third member being constituted of a member different from the first member and the second member, the third member electrically connecting the first member and the second member.
A method of manufacturing a power storage device includes a laser welding process of superposing an unwelded laminated current collector of an electrode body on an unwelded current collecting member, melting and mixing a first region of the unwelded laminated current collector and a second region of the unwelded current collecting member through irradiation with a laser beam, and forming a melted and solidified portion. The unwelded current collecting member has a gas exhaust channel, and the laser welding process includes melting the first region and the second region while exhausting gas to the outside through the gas exhaust channel, and forming the melted and solidified portion.
H01M 50/536 - Connexions d’électrodes dans un boîtier de batterie caractérisées par le procédé de fixation des conducteurs aux électrodes, p. ex. soudage
H01M 50/30 - Aménagements pour faciliter l’échappement des gaz
A method of manufacturing a power storage device includes a laser welding process having a placement process of placing a part of an unwelded laminated current collector of an electrode body over space between a pair of elongate protrusions of an unwelded current collecting member, an adhesion process of pressing a pair of outer regions of the unwelded laminated current collector against the unwelded current collecting member to cause foil bridge portions of foil current collectors to adhere to each other, and a melting and solidifying process of melting a first region of the unwelded laminated current collector and a second region of the unwelded current collecting member while exhausting gas to the outside through a gas exhaust groove, and forming a melted and solidified portion.
H01M 50/536 - Connexions d’électrodes dans un boîtier de batterie caractérisées par le procédé de fixation des conducteurs aux électrodes, p. ex. soudage
The present disclosure relates to a nickel-cobalt-manganese-based positive electrode active material comprising a large particle group and a small particle group. An average particle size D50 of the large particle group is greater than an average particle size D50 of the small particle group; the average particle size D50 of the large particle group is from 12 to 20 μm; the large particle group includes polycrystal aggregate particles; each polycrystal aggregate particle includes a secondary particle consisting of a plurality of primary particles aggregated together; each polycrystal aggregate particle has a primary particle size of 2.0 μm or less; a crystallite size of a (003) plane of each polycrystal aggregate particle is from 950 to 1210 Å; a crystallite size of a (104) plane of each polycrystal aggregate particle is from 500 to 750 Å; and a peak intensity ratio I(003)/I(104) of the polycrystal aggregate particles is 2.10 or less.
C01G 53/504 - Oxydes complexes contenant du nickel et au moins un autre élément métallique contenant des métaux alcalins, p. ex. LiNiO2 contenant du manganèse du type (MnO2)n-, p. ex. Li(NixMn1-x)O2 ou Li(MyNixMn1-x-y)O2 contenant du lithium et du cobalt avec le rapport molaire du nickel par rapport à tous les métaux autres que les métaux alcalins supérieur ou égal à 0,5, p. ex. Li(MzNixCoyMn1-x-y-z)O2 avec x ≥ 0,5
27.
POSITIVE ELECTRODE ACTIVE MATERIAL, POSITIVE ELECTRODE INCLUDING POSITIVE ELECTRODE ACTIVE MATERIAL, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY INCLUDING POSITIVE ELECTRODE
A positive electrode active material includes secondary particles in each of which primary particles are aggregated, wherein each of the secondary particles is a lithium transition metal composite oxide having a lamellar crystal structure. The lithium transition metal composite oxide includes Li, Ni, Mn, Co, and M, and a molar ratio of the Li, the Ni, the Mn, the Co, and the M is Li:Ni:Mn:Co:M=a:x:y:z:t, where the M, the a, the x, the y, the z, and the t are defined as in the scope of claims for patent. An integrated intensity ratio (I003/I104) of diffraction peaks of the secondary particle in an X-ray diffraction method is 1.05 to 1.19. A crystallite size Loos of the secondary particle is 1000 Å or more.
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
C01G 53/44 - Oxydes complexes contenant du nickel et au moins un autre élément métallique contenant des métaux alcalins, p. ex. LiNiO2 contenant du manganèse
A jig for laser welding is usable when performing laser welding by applying laser light to a welding-target portion, and includes: an accommodation portion that is able to receive the welding-target portion along a first direction; and an inclined surface extending in a peripheral direction so as to surround the welding-target portion around an axis in the first direction, wherein the inclined surface is able to reflect, in a second direction intersecting the first direction, the laser light emitted toward the jig for laser welding, so as to orient the laser light toward the welding-target portion.
B23K 26/06 - Mise en forme du faisceau laser, p. ex. à l’aide de masques ou de foyers multiples
B23K 26/00 - Travail par rayon laser, p. ex. soudage, découpage ou perçage
B23K 26/082 - Systèmes de balayage, c.-à-d. des dispositifs comportant un mouvement relatif entre le faisceau laser et la tête du laser
B23K 26/14 - Travail par rayon laser, p. ex. soudage, découpage ou perçage en utilisant un écoulement de fluide, p. ex. un jet de gaz, associé au faisceau laserBuses à cet effet
B23K 26/282 - Soudage de joints continus curvilignes de sections de tubes
B23K 26/322 - Assemblage tenant compte des propriétés du matériau concerné faisant intervenir des parties métalliques
B23K 101/36 - Dispositifs électriques ou électroniques
H01M 50/169 - Couvercles caractérisés par le procédé d’assemblage des boîtiers avec des couvercles par soudage, brasage ou brasage tendre
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
29.
POSITIVE ELECTRODE ACTIVE MATERIAL, POSITIVE ELECTRODE PLATE, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
A positive electrode active material comprises a first active material represented by a formula (I) that is secondary particles each consisting of 50 or more primary particles aggregated together, as well as a second active material represented by a formula (II) that is at least one of single particles and secondary particles each consisting of 2 to 10 primary particles aggregated together. The formula (I) and the formula (II) are as specified in the claims. A content of the first active material in the positive electrode active material is from 20 to 70 mass %. A ratio (D150/D250) of an average particle size (D150) of the first active material to an average particle size (D250) of the second active material is from 2.45 to 5.95.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
C01G 53/502 - Oxydes complexes contenant du nickel et au moins un autre élément métallique contenant des métaux alcalins, p. ex. LiNiO2 contenant du manganèse du type (MnO2)n-, p. ex. Li(NixMn1-x)O2 ou Li(MyNixMn1-x-y)O2 contenant du lithium et du cobalt
C01G 53/506 - Oxydes complexes contenant du nickel et au moins un autre élément métallique contenant des métaux alcalins, p. ex. LiNiO2 contenant du manganèse du type (MnO2)n-, p. ex. Li(NixMn1-x)O2 ou Li(MyNixMn1-x-y)O2 contenant du lithium et du cobalt avec le rapport molaire du nickel par rapport à tous les métaux autres que les métaux alcalins supérieur ou égal à 0,5, p. ex. Li(MzNixCoyMn1-x-y-z)O2 avec x ≥ 0,5 avec le rapport molaire du nickel par rapport à tous les métaux autres que les métaux alcalins supérieur ou égal à 0,8, p. ex. Li(MzNixCoyMn1-x-y-z)O2 avec x ≥ 0,8
H01M 4/131 - Électrodes à base d'oxydes ou d'hydroxydes mixtes, ou de mélanges d'oxydes ou d'hydroxydes, p. ex. LiCoOx
H01M 4/505 - 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 4/587 - 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
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
30.
POSITIVE ELECTRODE ACTIVE MATERIAL, POSITIVE ELECTRODE PLATE, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
A positive electrode active material comprises a first active material represented by a formula (I) and a second active material represented by a formula (II). The formula (I) and the formula (II) are as specified in the claims. Each of the first active material and the second active material is secondary particles each consisting of 50 or more primary particles aggregated together. An average particle size (D150) of the first active material is smaller than an average particle size (D250) of the second active material.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
C01G 53/502 - Oxydes complexes contenant du nickel et au moins un autre élément métallique contenant des métaux alcalins, p. ex. LiNiO2 contenant du manganèse du type (MnO2)n-, p. ex. Li(NixMn1-x)O2 ou Li(MyNixMn1-x-y)O2 contenant du lithium et du cobalt
C01G 53/506 - Oxydes complexes contenant du nickel et au moins un autre élément métallique contenant des métaux alcalins, p. ex. LiNiO2 contenant du manganèse du type (MnO2)n-, p. ex. Li(NixMn1-x)O2 ou Li(MyNixMn1-x-y)O2 contenant du lithium et du cobalt avec le rapport molaire du nickel par rapport à tous les métaux autres que les métaux alcalins supérieur ou égal à 0,5, p. ex. Li(MzNixCoyMn1-x-y-z)O2 avec x ≥ 0,5 avec le rapport molaire du nickel par rapport à tous les métaux autres que les métaux alcalins supérieur ou égal à 0,8, p. ex. Li(MzNixCoyMn1-x-y-z)O2 avec x ≥ 0,8
H01M 4/131 - Électrodes à base d'oxydes ou d'hydroxydes mixtes, ou de mélanges d'oxydes ou d'hydroxydes, p. ex. LiCoOx
H01M 4/505 - 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 4/62 - 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
In a disclosed lithium ion secondary battery, a positive electrode active material includes a lithium-transition metal complex oxide, containing Li, Ni, and Mn and being formed in a layered structure, and includes a covering part, a lithium-transition metal complex oxide has a Ni containing rate being equal to or more than 75 mol % with respect to the total of metal elements other than Li and is a secondary particle, an average void rate of the secondary particle is equal to or more than 2% and not more than 10%, and a covering part contains a boron chemical compound. A negative electrode active material contains a carbon material and a Si containing material, and a containing ratio of a Si element in the negative electrode active material is equal to or more than 5 mass % and not more than 10 mass % of a total amount of the negative electrode active material.
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 4/02 - Électrodes composées d'un ou comprenant un matériau actif
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 4/525 - 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 4/583 - Matériau carboné, p. ex. composés au graphite d'intercalation ou CFx
32.
BATTERY FULL CHARGE CAPACITY ESTIMATION METHOD, BATTERY FULL CHARGE CAPACITY ESTIMATION DEVICE, AND FULL CHARGE CAPACITY ESTIMATION PROGRAM
In a step of estimating a full charge capacity of a battery, SOC1 and SOC2 are acquired based on voltages when the battery is stable. A change amount ΔSOC is acquired from SOC1 and SOC2. A current integrated value ΣA1 until SOC changes from SOC1 to SOC2 is acquired. When |ΔSOC| is equal to or more than a first threshold, the estimation portion calculates an estimated value Hx from ΣA1 and ΔSOC. When a preset condition is satisfied, the estimation portion makes the first threshold be a second threshold. The second threshold is a lower threshold than the first threshold.
G01R 31/3828 - Dispositions pour la surveillance de variables des batteries ou des accumulateurs, p. ex. état de charge utilisant l’intégration du courant
G01R 31/374 - 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 avec des moyens pour corriger la mesure en fonction de la température ou du vieillissement
G01R 31/3842 - Dispositions pour la surveillance de variables des batteries ou des accumulateurs, p. ex. état de charge combinant des mesures de tension et de courant
G01R 31/392 - Détermination du vieillissement ou de la dégradation de la batterie, p. ex. état de santé
33.
BATTERY FULL CHARGE CAPACITY ESTIMATION METHOD, BATTERY FULL CHARGE CAPACITY ESTIMATION DEVICE, AND FULL CHARGE CAPACITY ESTIMATION PROGRAM
In a battery system managed by a control unit (a battery management system), a first estimation portion estimates an estimated value, based on a value acquired by an acquisition portion and a capacity deterioration model. The acquisition portion acquires information including a voltage value, a temperature value, and a current value. The capacity deterioration model is a model related to preset information and a capacity deterioration amount of a battery. The estimated value is estimated, for example, when an ignition of an electric vehicle is turned on.
The present disclosure relates to a positive electrode plate, in which a first active material layer has a depressed structure in which a plurality of depressions are formed on a side facing the second active material layer; a second active material layer has a protruded structure in which a plurality of protrusions are formed on a side facing the first active material layer; in a cross section in a thickness direction of the positive electrode active material layer, an interface at which the first active material layer and the second active material layer are in contact with each other has an uneven shape formed by a combination of the plurality of depressions and the plurality of protrusions; and a mass ratio of the second active material layer to the first active material layer in the positive electrode active material layer is from 1/9 to 3/7.
A herein disclosed secondary battery includes a case main body, a sealing plate, an electrode body, an electrolytic solution, and a spacer. This spacer includes a pair of first wall parts that are configured to be along first side surfaces of the case main body, and includes a partition part that is configured to extend along an opposed direction of the first side surfaces so as to be disposed between the electrode body and the sealing plate. Then, in this secondary battery, a liquid injection hole and the partition part are opposed while keeping a constant space between them, and a diffusion member configured to diffuse the electrolytic solution, which is injected from the liquid injection hole, along the partition part is provided on the partition part.
H01M 50/103 - Boîtiers primairesFourreaux ou enveloppes caractérisés par leur forme ou leur structure physique prismatique ou rectangulaire
H01M 50/15 - Couvercles caractérisés par leur forme pour des cellules prismatiques ou rectangulaires
H01M 50/474 - Éléments d'espacement à l'intérieur des cellules autres que les séparateurs, les membranes ou les diaphragmesLeurs procédés de fabrication caractérisés par leur position dans les cellules
A herein disclosed secondary battery includes a case main body, a second sealing plate, and an electrode body. Then, a second spacer supporting the electrode body from a downward position at an injection time of an electrolytic solution is arranged between the second sealing plate and the electrode body. The second spacer includes a pair of first wall parts and a pair of second wall parts. Then, the second spacer is configured to make a load bearing capacity of the second wall part be lower than a load bearing capacity of the first wall part. Then, this second spacer includes a rib configured to bridge the pair of second wall parts. By doing this, it is possible to suppress the deformation of the second spacer.
H01M 50/131 - Boîtiers primairesFourreaux ou enveloppes caractérisés par les propriétés physiques, p. ex. la perméabilité au gaz, les dimensions ou la résistance à la chaleur
H01M 50/103 - Boîtiers primairesFourreaux ou enveloppes caractérisés par leur forme ou leur structure physique prismatique ou rectangulaire
H01M 50/15 - Couvercles caractérisés par leur forme pour des cellules prismatiques ou rectangulaires
H01M 50/531 - Connexions d’électrodes dans un boîtier de batterie
A nonaqueous electrolyte secondary battery in which a problem in a conventional art is solved is provided. The nonaqueous electrolyte secondary battery disclosed herein includes an electrode body, a nonaqueous electrolyte solution, an electrode terminal, and a battery case that accommodates the electrode body and the nonaqueous electrolyte solution. The battery case is made of aluminum or an aluminum alloy. The battery case includes an exterior can that includes an opening part, and a sealing plate that seals the opening part. The electrode terminal is insulated from the sealing plate by an insulating resin member. The insulating resin member contains polyphenylene sulfide and a glass filler. The insulating resin member exists at least partially inside the battery case and at a position that can be in contact with the nonaqueous electrolyte solution. The nonaqueous electrolyte solution contains a dehydrating agent as an additive.
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 10/0567 - Matériaux liquides caracterisés par les additifs
H01M 50/103 - Boîtiers primairesFourreaux ou enveloppes caractérisés par leur forme ou leur structure physique prismatique ou rectangulaire
A bonding method disclosed herein includes: a laser welding step of irradiating a boundary portion between a first member made of a metal and a second member made of a metal with laser, thereby forming a welding bonding part; and an etching step of irradiating a surface of the welding bonding part and its peripheral part with an energy beam with lower output than an output in the laser welding step, thereby forming a plurality of concave parts with a substantially circular shape at the surface of the welding bonding part and its peripheral part.
A method of manufacturing a secondary battery includes: positioning a case main body and a sealing plate so as to provide a level difference between an edge portion of the case main body and an outer end surface of the sealing plate in a first direction; and when the level difference is defined as H1, a maximum clearance between an opening and the outer end surface in a second direction orthogonal to the first direction is defined as L, and an inclination angle of an optical axis of laser light with respect to the first direction is defined as θ, joining portions of the case main body and the sealing plate by applying the laser light to the edge portion and the outer end surface with the optical axis being inclined at an angle equal to or more than a numerical value of θ that satisfies a relation of tan θ=L/H1.
In a battery, a case has an outer surface and a gas-discharge valve, the outer surface including a first surface and a second surface, the first surface extending in a direction of a plane including a first direction, the second surface being connected to one end portion of the first surface in the first direction, the second surface being substantially orthogonal to the first surface, the gas-discharge valve being provided at the second surface. The electrode assembly and a current collector are joined at a first joining portion, the current collector and an electrode terminal are joined at a second joining portion, and at least one of the first joining portion and the second joining portion is eccentrically located on the second surface side in the first direction.
H01M 50/536 - Connexions d’électrodes dans un boîtier de batterie caractérisées par le procédé de fixation des conducteurs aux électrodes, p. ex. soudage
H01M 50/103 - Boîtiers primairesFourreaux ou enveloppes caractérisés par leur forme ou leur structure physique prismatique ou rectangulaire
A positive electrode active material comprises a first active material having an average particle size (D50) from 2 to 10 μm, and a second active material having an average particle size (D50) from 12 to 20 μm. The first active material includes first particles that are a lithium-(transition metal) composite oxide, the first particles are at least one of single particles and secondary particles, and the secondary particles each consist of 2 to 10 primary particles aggregated together. The second active material includes second particles that are a lithium-(transition metal) composite oxide, and the second particles are secondary particles each consisting of 50 or more primary particles aggregated together. The second active material has a sphere degree from 0.770 to 0.810.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
C01G 53/504 - Oxydes complexes contenant du nickel et au moins un autre élément métallique contenant des métaux alcalins, p. ex. LiNiO2 contenant du manganèse du type (MnO2)n-, p. ex. Li(NixMn1-x)O2 ou Li(MyNixMn1-x-y)O2 contenant du lithium et du cobalt avec le rapport molaire du nickel par rapport à tous les métaux autres que les métaux alcalins supérieur ou égal à 0,5, p. ex. Li(MzNixCoyMn1-x-y-z)O2 avec x ≥ 0,5
H01M 4/02 - Électrodes composées d'un ou comprenant un matériau actif
H01M 4/38 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'éléments simples ou d'alliages
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
42.
NON-AQUEOUS ELECTROLYTE SOLUTION SECONDARY BATTERY AND MANUFACTURING METHOD OF NON-AQUEOUS ELECTROLYTE SOLUTION SECONDARY BATTERY
Provided is a technique for preventing plastic deformation of a battery case due to restraint during initial charging. A manufacturing method disclosed herein is a manufacturing method of a non-aqueous electrolyte solution secondary battery. This method includes assembling to construct a secondary battery assembly, and initial charging of the secondary battery assembly. In the initial charging, the initial charging is started with the secondary battery assembly restrained or not restrained; when a negative electrode potential of the secondary battery assembly reaches 0.6 V, a restraint force P1 is applied to the secondary battery assembly, wherein the restraint force P1 is greater than a restraint force applied before the negative electrode potential reaches 0.6 V; and the restraint force P1 is applied to the secondary battery assembly until the negative electrode potential reaches at least 0.3 V.
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 10/0525 - 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
43.
ELECTRICITY STORAGE APPARATUS AND METHOD OF INTERRUPTING ELECTRIC CURRENT
An electricity storage apparatus includes an electricity storage device module, a voltage sensor, a pyro-fuse, and a controller. The voltage sensor detects a voltage value of the electricity storage device module. The current sensor detects a current value flowing in the electricity storage device module. The pyro-fuse is connected in series to the electricity storage device module. The controller sets a voltage condition and a current condition. The voltage condition is predetermined based on the voltage value detected by the voltage sensor. The current condition is predetermined based on the current value detected by the current sensor. The controller causes the pyro-fuse to activate when both the voltage condition and the current condition are satisfied.
A method of producing a composite hydroxide according to the present disclosure includes: by supplying an aqueous ammonia solution and sodium hydroxide to an aqueous solution including a compound containing nickel and a compound containing manganese, generating a nucleus while maintaining a pH at 12.0 to 13.5 on condition of a liquid temperature of 25° C. and an ammonium ion concentration at 5.3 to 11.7 g/L; and growing the nucleus while maintaining the pH at 9.7 to 10.8 on condition of the liquid temperature of 25° C. and the ammonium ion concentration at 20.0 to 26.4 g/L.
C01G 53/44 - Oxydes complexes contenant du nickel et au moins un autre élément métallique contenant des métaux alcalins, p. ex. LiNiO2 contenant du manganèse
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
Provided is a square battery 100 that includes a battery case 10 and an electrode assembly 20 housed in the battery case 10. The battery case 10 includes a case body 12 having a rectangular prism shape with openings 13 at both ends thereof and sealing plates 14 that seal the openings 13. The sealing plate 14 has a cover portion 14a that covers an edge 13a of the opening of the case body 12 and an inserting portion 14b inserted into the interior of the case body 12 from the cover portion 14a along the inside of the case body 12. The cover portion 14a and the case body 12 are welded together along the edge 13a of the opening of the battery case 10.
A secondary battery includes a battery case, an electrode body housed in the battery case, and a current collector terminal including an outer terminal inserted in a terminal through hole of the battery case and fixed to the battery case via an insulating resin member and an inner terminal formed to be energized to the outer terminal and connected to the electrode body. The current collector terminal is provided with a current interrupt mechanism configured such that when the battery temperature rises above a predetermined temperature, the outer terminal and the inner terminal are separated by the biasing force of a spring member biasing the outer terminal or/and the inner terminal and placed into a de-energized state.
A secondary battery includes: an electrode assembly group including a first electrode assembly and a second electrode assembly; a first heat radiation plate disposed between the first electrode assembly and the second electrode assembly; a case that accommodates the electrode assembly group and the first heat radiation plate; and a second heat radiation plate accommodated in the case and disposed between an outer peripheral surface of the electrode assembly group and the case. Each of the first heat radiation plate and the second heat radiation plate has a thermal conductivity of 25 W/m·K or more and a volume resistivity of 1×1013 Ω·cm or more.
H01M 10/653 - Moyens de commande de la température associés de façon structurelle avec les éléments caractérisés par des matériaux électriquement isolants ou thermiquement conducteurs
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 10/651 - Moyens de commande de la température associés de façon structurelle avec les éléments caractérisés par des paramètres spécifiés par une valeur numérique ou une formule mathématique, p. ex. rapports, tailles ou concentrations
H01M 10/6555 - Barres ou plaques disposées entre les éléments
H01M 50/103 - Boîtiers primairesFourreaux ou enveloppes caractérisés par leur forme ou leur structure physique prismatique ou rectangulaire
48.
POSITIVE ELECTRODE PLATE AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY HAVING THE SAME
A positive electrode plate comprises a current collector, and an active material layer provided on the current collector. The active material layer has a first layer mainly composed of a first active material represented by a formula (I) and a second layer mainly composed of a second active material represented by a formula (II), and the second layer is positioned closer to the current collector than the first layer is. The formula (I) and the formula (II) are as defined in the claims. A content ratio between the first active material and the second active material in the active material layer is (first active material):(second active material)=2.5:7.5 to 6.5:3.5 (in weight). A porosity of the first layer is from 20 to 45%, and a porosity of the second layer is from 18 to 41%.
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 4/02 - Électrodes composées d'un ou comprenant un matériau actif
H01M 4/131 - Électrodes à base d'oxydes ou d'hydroxydes mixtes, ou de mélanges d'oxydes ou d'hydroxydes, p. ex. LiCoOx
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p. ex. liants, charges
A secondary battery includes: a stacked-type electrode body that includes first electrode plates, second electrode plates, and a separator with a band-like shape; and an insulating sheet. The separator includes a zigzag-bent part that is bent in a zigzag manner, and a wound part that is wound to an outer periphery of a part where the first electrode plates, the second electrode plates, and the zigzag-bent part are stacked. The zigzag-bent part includes a first bent part that is disposed on one side in a direction perpendicular to a stacking direction of the first and second electrode plates, and a second bent part that is disposed on the other side in that direction. A separator overlap part where the wound part overlaps twice or more is provided outside the first bent part. The insulating sheet is disposed on an outer surface side of the separator overlap part.
H01M 50/533 - Connexions d’électrodes dans un boîtier de batterie caractérisées par la forme des conducteurs ou des languettes
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
A secondary battery includes: a stacked-type electrode body including first electrode plates, second electrode plates, and a separator. The separator includes a zigzag-bent part bent in a zigzag manner, and a wound part wound to an outer periphery of a part where the first and second electrode plates and the zigzag-bent part are stacked. The separator includes a start end part and a terminal end part that is positioned at a winding terminal end of the wound part. The zigzag-bent part includes a first bent part and a second bent part. The separator includes an extension part positioned on a side of the start end part relative to the zigzag-bent part, and disposed between the second bent part and the wound part. In the stacking direction of the first and second electrode plates, outer surfaces of both electrode plates positioned at the outermost surface sides are covered with the separator.
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 50/103 - Boîtiers primairesFourreaux ou enveloppes caractérisés par leur forme ou leur structure physique prismatique ou rectangulaire
H01M 50/184 - Éléments de scellement caractérisés par leur forme ou leur structure
H01M 50/449 - Séparateurs, membranes ou diaphragmes caractérisés par le matériau ayant une structure en couches
H01M 50/489 - Séparateurs, membranes, diaphragmes ou éléments d’espacement dans les cellules caractérisés par leurs propriétés physiques, p. ex. degré de gonflement, hydrophilicité ou propriétés pour court-circuiter
51.
TERMINAL FOR ELECTRICITY STORAGE DEVICE AND ELECTRICITY STORAGE DEVICE
A terminal includes a first conductive member and a second conductive member. The first conductive member includes a first recessed portion in a first surface. The second conductive portion includes a flange portion and a shaft portion. At least a portion of the flange portion is arranged in the first recessed portion. The first conductive member includes a metal joining portion metallically joined to the flange portion. The flange portion includes a large diameter portion and a small diameter portion. The terminal for an electricity storage device includes a fastening portion in which an outer peripheral side surface of the small diameter portion is mechanically fastened to an inner surface of the first recessed portion. A seal portion is provided in an end portion of an abutting area where the first conductive member and the flange portion of the second conductive member abut each other.
A sheet conveying apparatus includes: a first conveying section that conveys a strip-shaped sheet having a first surface and a second surface, with the first surface facing downward; a turn section provided downstream of the first conveying section to turn over the sheet; and a second conveying section provided downstream of the turn section. The turn section includes a convex curved surface having its axis extending in a width direction of the sheet and turns over the sheet along the convex curved surface with the first surface facing inward. The convex curved surface includes: a small-diameter portion provided with air nozzles for injecting air; and a pair of large-diameter portions disposed on both sides of the small-diameter portion in an axis direction and extending outward in a radial direction relative to the small-diameter portion to support both ends of the sheet in the width direction.
Provided is a technology to reduce a resistance increase rate while suppressing increase in an electrode plate expansion rate after a charge-discharge cycle of an electricity storage device having a negative electrode containing Si. According to the technology disclosed herein, an electricity storage device including a negative electrode current collector and a negative electrode active material layer disposed on the negative electrode current collector is disclosed. The negative electrode active material layer includes, as a negative electrode active material particle, a Si-containing particle that is a composite particle of a graphite substrate having a void and silicon disposed within the void of the graphite substrate. The hardness of the Si-containing particle contained in at least one of layers, into which the negative electrode active material layer is partitioned in a thickness direction thereof, is lower than a hardness of the Si-containing particle contained in the other layer.
A case of the herein disclosed electric storage device includes an electrode terminal, and a sealing material. The electrode terminal includes a shaft part and a plate part. Then, the sealing material includes a side surface protecting part configured to cover the side surface of the plate part, and a locking part configured to continue to a top end of the side surface protecting part and configured to cover a peripheral edge part of the connection surface. According to the electric storage device including the above described configuration, it is possible by the locking part of the sealing material to regulate a rise of the electrode terminal, and thus it is possible to inhibit a breakage of the sealing material and a detachment of the electrode terminal.
H01G 9/00 - Condensateurs électrolytiques, redresseurs électrolytiques, détecteurs électrolytiques, dispositifs de commutation électrolytiques, dispositifs électrolytiques photosensibles ou sensibles à la températureProcédés pour leur fabrication
H01G 9/10 - Scellement, p. ex. de fils de traversée
H01M 50/103 - Boîtiers primairesFourreaux ou enveloppes caractérisés par leur forme ou leur structure physique prismatique ou rectangulaire
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
A herein disclosed manufacturing method of an electrode plate includes a preparing a strip-like shaped electrode plate base material, and manufacturing an electrode plate that comprises plural electrode tabs at an end part in a shorter direction, by carrying the electrode plate base material in a first direction being along a longitudinal direction of the electrode plate base material and irradiating a laser to the electrode plate base material in carry. Then, at the manufacturing an electrode plate, a scanning speed of the laser on the electrode plate base material is controlled to make a relative speed of an irradiation position of the laser with respect to the electrode plate base material in carry be constant.
A herein disclosed manufacturing method includes preparing a case part that comprises a penetration hole, inserting an electrode terminal into the penetration hole, arranging the case part and the electrode terminal in an inside cavity of a metal mold, and injecting a resin into the inside cavity of the metal mold. Then, a cavity surface of the metal mold includes a protruding part configured to protrude from the first surface toward a peripheral edge part of the connection surface. Then, at the injection of the resin, an injection amount of the resin to the inside cavity is controlled to make the protruding part dam the resin flowing into a resin flow channel. By doing this, it is possible to suppress the resin from adhering to the connection surface.
H01M 50/636 - Fermeture ou scellement des ouvertures de remplissage
H01M 50/474 - Éléments d'espacement à l'intérieur des cellules autres que les séparateurs, les membranes ou les diaphragmesLeurs procédés de fabrication caractérisés par leur position dans les cellules
The present disclosure provides a nonaqueous electrolyte secondary battery including a multilayer electrode body and a battery case. The battery case includes a lower surface, and the lower surface includes a gas exhaust valve. The multilayer electrode body includes a pair of flat surfaces, and a lower end surface and an upper end surface. A tape is attached to the multilayer electrode body so as to link between the pair of flat surfaces. The lower end surface and the upper end surface of the multilayer electrode body are covered with the tape asymmetrically.
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 10/0525 - 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
An electrode slurry manufacturing apparatus includes a material loading unit, a feeder unit, and a multi-screw kneader. The material loading unit puts a plurality of types of electrode materials collectively into the feeder unit. The feeder unit includes an inlet opening, an agitation chamber, a discharge opening, a feeding blade, and a spiral shaped blade. Into the inlet opening, the electrode materials are loaded from the material loading unit. The electrode materials are agitated in the agitation chamber. The discharge opening is disposed in a bottom part of the agitation chamber. The feeding blade is mounted to a shaft disposed on the bottom part of the agitation chamber. The feeding blade feeds the electrode materials to the discharge opening. The spiral shaped blade is disposed above the feeding blade and is mounted to the shaft.
B01F 27/722 - Mélangeurs à agitateurs tournant dans des récipients fixesPétrins avec des agitateurs tournant autour d'un axe horizontal ou incliné avec des hélices ou des sections d'hélices avec plusieurs hélices dans le même récipient les hélices étant étroitement entourées d'un boîtier
B01F 27/724 - Mélangeurs à agitateurs tournant dans des récipients fixesPétrins avec des agitateurs tournant autour d'un axe horizontal ou incliné avec des hélices ou des sections d'hélices avec une seule hélice étroitement entourée d'un boîtier
A manufacturing apparatus for a battery assembly having a joining-target portion at which a plurality of members are joined together by laser welding includes: a laser that applies laser light toward the joining-target portion; and a laser light attenuation portion that is provided at least at a position facing the laser and that attenuates the laser light, wherein the laser light attenuation portion includes a main body, and i) an uneven structure that is provided in a surface of the main body and that diffusely reflects the laser light, or ii) a coolant flow path provided inside the main body.
A manufacturing method for an electrical energy storage device disclosed herein includes: a preparing step of preparing a plate material that is made of metal and includes a first part forming a first surface of a case, and a pair of second parts extending from the first part and forming a pair of second surfaces of the case; and a wrapping step of disposing an electrode body on the first part of the plate material and bending the plate material so that a distance between the pair of second parts decreases, thereby wrapping the electrode body.
H01G 11/84 - Procédés de fabrication de condensateurs hybrides ou EDL ou de leurs composants
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 10/0585 - 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 10/0587 - 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
An electrical energy storage device disclosed herein includes a square case having a pair of third surfaces, an electrode body including a positive electrode and a negative electrode, a positive electrode tab that is provided in the positive electrode, a negative electrode tab that is provided in the negative electrode, an electrolyte solution, and a liquid injection hole that is provided at the third surface of the case and at a position closer to the negative electrode tab than to the positive electrode tab.
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 50/103 - Boîtiers primairesFourreaux ou enveloppes caractérisés par leur forme ou leur structure physique prismatique ou rectangulaire
H01M 50/534 - Connexions d’électrodes dans un boîtier de batterie caractérisées par le matériau des conducteurs ou des languettes
H01M 50/538 - Connexions de plusieurs conducteurs ou languettes d’électrodes empilées enroulées ou pliées
A method for manufacturing a power storage device, in which an outer circumferential edge portion of a lid and an opening portion of a case body are welded via a melted-solidified portion, includes: a placing step of placing the lid in an unmelted opening portion of the case body; a welding step of welding the outer circumferential edge portion 36 of the lid 33 and the opening portion of the case body over their entire circumference. In the placing step, the unmelted opening portion of the case body is placed on a lower side more than a circumferential edge upper surface of the unmelted outer circumferential edge portion of the lid. In the welding step, laser welding is performed by irradiating a multi-beam of a beamlet pattern that provides more heat input to the unmelted opening portion compared to the unmelted outer circumferential edge portion.
H01M 50/169 - Couvercles caractérisés par le procédé d’assemblage des boîtiers avec des couvercles par soudage, brasage ou brasage tendre
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 50/102 - Boîtiers primairesFourreaux ou enveloppes caractérisés par leur forme ou leur structure physique
An electrical energy storage device to be disclosed herein includes a case that includes a penetration hole, and a sealing member that seals the penetration hole. The sealing member includes a base part that is integrated with the case so as to continuously cover a peripheral part of the penetration hole at an inner wall of the penetration hole and an outer surface of the case, and a gas permeation film that is thermally fused to the base part outside the case so as to cover the penetration hole.
A manufacturing method disclosed herein includes a preparing step of preparing an assembly including a case in which a resin member is attached to an electrolyte solution injection hole, and a sealing step of sealing the electrolyte solution injection hole after an electrolyte solution is injected. The resin member includes a shaft part that is hollow, a penetration hole, and a surplus part that rises up at a periphery of the penetration hole outside the case. In the sealing step, the penetration hole is closed by melting at least the surplus part.
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 50/103 - Boîtiers primairesFourreaux ou enveloppes caractérisés par leur forme ou leur structure physique prismatique ou rectangulaire
H01M 50/15 - Couvercles caractérisés par leur forme pour des cellules prismatiques ou rectangulaires
In this secondary battery, in a direction perpendicular to a first sealing plate, a surface of a first region on the first sealing plate side protrudes to the first sealing plate side with respect to each of a surface of a second region on the first sealing plate side and a surface of a third region on the first sealing plate side, and in a direction perpendicular to the first sealing plate, in a surface of a second current collecting member on an electrode assembly side, a fourth region is provided with a recess recessed to the first sealing plate side with respect to each of a fifth region and a sixth region, and at least a portion of the first region is disposed in the recess.
A battery system includes a plurality of battery packs and a main controller. Each of the battery packs includes a pack case, a cell module including a plurality of battery cells disposed in the pack case, a sub-controller disposed in the pack case and electrically connected to the cell module to use the cell module as its power source, and an abnormality detection element that detects an abnormality in the entirety of the pack case. The main controller is communicably connected to each of the sub-controllers in the plurality of battery packs. The abnormality detection element of one of the plurality of battery packs is communicably connected to the sub-controller of another one of the battery packs.
H01M 10/42 - Procédés ou dispositions pour assurer le fonctionnement ou l'entretien des éléments secondaires ou des demi-éléments secondaires
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
G01K 1/14 - SupportsDispositifs de fixationDispositions pour le montage de thermomètres en des endroits particuliers
G01K 3/00 - Thermomètres donnant une indication autre que la valeur instantanée 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 50/204 - Bâtis, modules ou blocs de multiples batteries ou de multiples cellules
67.
LASER WELDING METHOD AND LASER WELDING APPARATUS USED IN THIS METHOD
A laser welding method for laser-welding a first welding portion and a second welding portion by irradiation of a laser beam includes: a multi-beam generating step of generating a radially polarized multi-beam as the laser beam, composed of a plurality of beamlets, each of which is a radially polarized beamlet; and an irradiation welding step of laser-welding the first welding portion and the second welding portion by irradiating the radially polarized multi-beam to the first welding portion and the second welding portion and simultaneously moving an irradiation site.
This secondary battery includes an insulating sheet that covers an electrode assembly, the electrode assembly includes a first surface, the insulating sheet includes a first region constituted of a vicinity of one end portion of the insulating sheet and a second region constituted of a vicinity of the other end portion of the insulating sheet, the first region and the second region cover the first surface, and an overlapping region in which the second region overlaps with the first region is provided, in a width direction of the electrode assembly, the overlapping region includes a central region and an end-portion region located beside each of both sides of the central region, and the central region is provided with a recess as a non-overlapping region that reduces an overlapping area of the overlapping region.
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
H01M 50/169 - Couvercles caractérisés par le procédé d’assemblage des boîtiers avec des couvercles par soudage, brasage ou brasage tendre
In this secondary battery, a first current collecting member includes a first region and a second region, a second current collecting member includes a third region and a fourth region, a positive electrode tab is connected to the first region, the second region and the fourth region are joined to each other, and a first insulating member is disposed between the first region and the third region. According to this secondary battery, it is possible to provide a secondary battery having a higher volume energy density and higher reliability.
H01M 50/474 - Éléments d'espacement à l'intérieur des cellules autres que les séparateurs, les membranes ou les diaphragmesLeurs procédés de fabrication caractérisés par leur position dans les cellules
H01M 50/103 - Boîtiers primairesFourreaux ou enveloppes caractérisés par leur forme ou leur structure physique prismatique ou rectangulaire
H01M 50/15 - Couvercles caractérisés par leur forme pour des cellules prismatiques ou rectangulaires
H01M 50/533 - Connexions d’électrodes dans un boîtier de batterie caractérisées par la forme des conducteurs ou des languettes
H01M 50/536 - Connexions d’électrodes dans un boîtier de batterie caractérisées par le procédé de fixation des conducteurs aux électrodes, p. ex. soudage
H01M 50/548 - Bornes caractérisées par la position des terminaux sur les cellules sur des côtés opposés de la cellule
H01M 50/583 - Dispositifs ou dispositions pour l’interruption du courant en réponse au courant, p. ex. fusibles
A battery pack includes a plurality of cell module units and a pack case housing the plurality of cell module units. Each of the cell module units includes a cell module including a plurality of battery cells, an abnormality detection means electrically connected to the cell module to use the cell module as its power source. The abnormality detecting means is configured to output a signal to an external controller when detecting an abnormality in an entirety of the pack case.
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 50/204 - Bâtis, modules ou blocs de multiples batteries ou de multiples cellules
A sheet conveyor apparatus includes an air turn bar and a hood. The air turn bar turns back a strip-shaped sheet conveyed along a predetermined conveyance passage. The hood includes an inner circumferential surface that opposes an outer circumferential surface of the air turn bar. The outer circumferential surface of the air turn bar includes ejection holes ejecting air toward one surface of the sheet. The inner circumferential surface of the hood includes suction holes sucking air from the other surface of the sheet.
A first supporting portion and a second supporting portion sandwich one battery cell of a plurality of battery cells in a first direction. The first supporting portion includes a plurality of first protrusions. Each of the plurality of first protrusions protrudes with respect to a first main surface portion in the first direction and extends in the form of a strip along a second direction orthogonal to the first direction. The second supporting portion includes a plurality of second protrusions. Each of the plurality of second protrusions protrudes with respect to a second main surface portion in the first direction. When viewed in the first direction, each of the plurality of second protrusions extends in the form of a strip so as not to overlap with the plurality of first protrusions, or extends in the form of a strip along a third direction different from the second direction.
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 10/613 - Refroidissement ou maintien du froid
H01M 10/6557 - Composants solides comprenant des canaux d'écoulement ou des tubes pour un échange de chaleur disposés entre les éléments
A technique is provided that can suppress a capacity deterioration when an electric charge is performed on an electric storage device. The herein disclosed electric storage device includes a nonaqueous electrolytic solution. The nonaqueous electrolytic solution contains a nonaqueous solvent and an additive agent A. The nonaqueous solvent is carbonates. The additive agent A is at least one of 2-vinylpyridine, vinyl benzoate, 3,4-thiophenedicarboxylic anhydride, 1-ethyl-3-methylimidazolium methyl sulfate, 1-ethyl-3-methylimidazolium ethyl sulfate, 1-ethyl-3-methylimidazolium methylphosphonate, and 1-ethyl-3-methylimidazolium bis(perfluoroethylsulfonyl)imide.
H01M 10/0567 - Matériaux liquides caracterisés par les additifs
H01M 4/02 - Électrodes composées d'un ou comprenant un matériau actif
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 4/583 - Matériau carboné, p. ex. composés au graphite d'intercalation ou CFx
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
Provided is a technique that does not inhibit an intrusion of the electrolytic solution from outside to inside of the electrode assembly, and that can suppress the electrolytic solution from outflowing to the outside from the inside of the electrode assembly. A herein disclosed electric storage device includes the electrode assembly including a positive electrode, a negative electrode, and a separator, includes an electrolytic solution, and includes a case configured to accommodate the electrode assembly and the electrolytic solution. The electric storage device includes a reverse flow inhibiting groove on a surface of the separator. The reverse flow inhibiting groove is a groove in which the electrolytic solution flows from the outside to the inside of the electrode assembly, and is a groove which is in a pattern for inhibiting the electrolytic solution from flowing to the outside from the inside of the electrode assembly.
H01M 50/463 - Séparateurs, membranes ou diaphragmes caractérisés par leur forme
H01G 11/24 - Électrodes caractérisées par les propriétés structurelles des matériaux composant les électrodes ou inclus dans les électrodes, p. ex. forme, surface ou porositéÉlectrodes caractérisées par les propriétés structurelles des poudres ou particules utilisées à cet effet
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 50/103 - Boîtiers primairesFourreaux ou enveloppes caractérisés par leur forme ou leur structure physique prismatique ou rectangulaire
H01M 50/449 - Séparateurs, membranes ou diaphragmes caractérisés par le matériau ayant une structure en couches
75.
METHOD OF MANUFACTURING ELECTRICITY STORAGE DEVICE CASE COMPONENT, ELECTRICITY STORAGE DEVICE CASE COMPONENT, AND ELECTRICITY STORAGE DEVICE
A method of manufacturing a case component includes the steps of preparing a plate member, placing the plate member in a mold, and integrally molding a sealing member with the plate member. In the step of integrally molding the sealing member with the plate member, a resin is poured into the mold to integrally mold the plate member and the sealing member that seals the plate member. The mold includes a protruding portion to be pressed against a circumferential periphery around the through hole of the plate member. The step of placing the plate member in the mold includes pressing the protruding portion of the mold against the circumferential periphery around the through hole of the plate member. The plate member includes a recessed portion formed between the through hole and a position against which the protruding portion of the mold is to be pressed.
A battery includes a case member, a terminal member, and a resin member. The case member has a through-hole. The resin member includes an inner portion that contacts an inner surface of the case member, an inside-hole portion that fills space between a wall of the through-hole and the terminal member, and an outer portion that contacts an outer surface of the case member and has a smaller volume than the inner portion. One of a first condition that the thermal expansion coefficient of the case member is larger than that of the inner portion and the tensile strength of the inner portion is lower than that of the outer portion and a second condition that the thermal expansion coefficient of the case member is smaller than that of the inner portion and the tensile strength of the outer portion is lower than that of the inner portion is satisfied.
H01M 50/198 - Éléments de scellement caractérisés par le matériau caractérisés par les propriétés physiques, p. ex. adhérence ou dureté
H01M 50/103 - Boîtiers primairesFourreaux ou enveloppes caractérisés par leur forme ou leur structure physique prismatique ou rectangulaire
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
H01M 50/588 - 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’extérieur des batteries, p. ex. les contacts incorrects des bornes ou des barres omnibus
77.
POWER STORAGE DEVICE AND METHOD OF MANUFACTURING THE POWER STORAGE DEVICE
A power storage device includes a case member having an insertion hole, a terminal member, and a resin member that fixes the terminal member to the case member. The terminal member has a terminal top plate and a terminal extension. The terminal member and the resin member are hermetically sealed only at a top plate roughened portion that is formed in the shape of an encircling band on a top plate rear surface of the terminal top plate and is subjected to surface roughening. The case member and the resin member are hermetically sealed only at a case roughened portion that is formed in the shape of an encircling band on a case inner surface of the case member and is subjected to surface roughening.
H01M 50/184 - Éléments de scellement caractérisés par leur forme ou leur structure
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
A power storage device includes a case member, a terminal member, and a resin member that is hermetically joined to these members while insulating them from each other. The resin member includes a thermoplastic main resin and a fibrous filler consisting of numerous fibers. The resin member has a resin inner portion and a resin outer portion, and at least one of a resin inner surface facing the inside and a resin joint surface facing the outside of the resin inner portion is provided with an uneven region, and molding of the uneven region causes variation in the direction of the fibers of the filler included in the resin inner portion.
H01M 50/195 - Matériau composite constitué d’un mélange de matériaux organiques et inorganiques
H01M 50/103 - Boîtiers primairesFourreaux ou enveloppes caractérisés par leur forme ou leur structure physique prismatique ou rectangulaire
H01M 50/184 - Éléments de scellement caractérisés par leur forme ou leur structure
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
H01M 50/55 - Bornes caractérisées par la position des terminaux sur les cellules sur le même côté de la cellule
This separator includes a main body portion and an embedded portion embedded in each of a plurality of through holes provided in the main body portion, the main body portion is a heat insulating material having heat insulating performance higher than that of the embedded portion, the embedded portion is an elastic material having elastic performance higher than that of the main body portion, and a shortest distance between one portion of an inner wall surface of an inner diameter of the through hole and another portion of the inner wall surface of the inner diameter of the through hole is 60 mm or less, the other portion of the inner wall surface being located in a direction perpendicular to the one portion of the inner wall surface.
H01M 50/291 - MonturesBoîtiers secondaires ou cadresBâtis, modules ou blocsDispositifs de suspensionAmortisseursDispositifs de transport ou de manutentionSupports caractérisés par des éléments d’espacement ou des moyens de positionnement dans les racks, les cadres ou les blocs caractérisés par leur forme
80.
PRODUCTION METHOD FOR POSITIVE ELECTRODE ACTIVE MATERIAL
The present disclosure is intended to provide a production method for a positive electrode active material with reduced degradation in resistance property. The technology disclosed herein relates to a production method for a positive electrode active material after sintering, the method comprising: a preparation step of preparing an end material that includes a positive electrode composite material including a positive electrode active material for a secondary battery and a binder containing fluorine; and a sintering step of sintering the positive electrode composite material in a container, wherein the sintering step is performed with magnesium hydroxide present in the container. Consequently, a positive electrode active material with reduced degradation in resistance property is achieved.
C01G 53/502 - Oxydes complexes contenant du nickel et au moins un autre élément métallique contenant des métaux alcalins, p. ex. LiNiO2 contenant du manganèse du type (MnO2)n-, p. ex. Li(NixMn1-x)O2 ou Li(MyNixMn1-x-y)O2 contenant du lithium et du cobalt
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
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 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p. ex. liants, charges
A secondary battery includes an electrode body including first electrode plates, second electrode plates and a separator disposed therebetween. The separator is bent in a zigzag manner, and includes a first bent part folded at an end part of the first electrode plate and a second bent part folded at an end part of the second electrode plate. The first bent parts are disposed on one side surface side of a pair of side surfaces of the electrode body that face each other, and the second bent parts are disposed on the other side surface side thereof. A first end part and a second end part of the separator are disposed at one side surface of the pair of side surfaces of the electrode body. In the electrode body, the separator exists on both outermost surfaces in a stacking direction of the first and second electrode plates.
H01M 50/466 - Séparateurs, membranes ou diaphragmes caractérisés par leur forme en forme de U, de sac ou pliés
H01M 10/0583 - Structure ou fabrication d'accumulateurs à éléments de structure pliés à l'exception des éléments enroulés, c.-à-d. des électrodes positives ou négatives pliées ou des séparateurs pliés, p. ex. à électrodes ou séparateurs en forme de Z
A secondary battery in which a problem in a conventional art is solved is provided. A secondary battery according to the present disclosure includes an electrode body that includes a plurality of first electrode plates, a plurality of second electrode plates, and a separator disposed between the first electrode plate and the second electrode plate, an electrolyte solution, and a case that accommodates these. The separator is bent in a zigzag manner. The separator includes a first bent part folded at an end part of the first electrode plate and a second bent part folded at an end part of the second electrode plate. A plurality of the first bent parts are disposed on one side of a pair of side surfaces of the electrode body that face each other, and a plurality of the second bent parts are disposed on the other side of the pair of side surfaces of the electrode body that face each other. The separator includes a cover part that covers outer surfaces of the plurality of first bent parts. Outer surfaces of the second bent part are not covered with the separator. In the electrode body, the separator exists on both outermost surfaces in a direction where the first electrode plates and the second electrode plates are stacked.
H01M 50/463 - Séparateurs, membranes ou diaphragmes caractérisés par leur forme
H01M 50/584 - Moyens pour empêcher un usage ou une décharge indésirables pour empêcher les contacts incorrects à l’intérieur ou à l’extérieur des batteries
83.
POSITIVE ELECTRODE ACTIVE MATERIAL AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
The present disclosure relates to a positive electrode active material including a small particle group and a large particle group, wherein the small particle group consists of a plurality of small particles, the large particle group consists of a plurality of large particles, a formula of 1.0≤[D1(90)−D1(10)]/D1(50) is satisfied, each of the small particles includes a single-particle, a BET specific surface area of the small particles is 0.6 or more and 0.85 or less, each of the large particles includes an aggregated particle, the aggregated particle is formed by aggregation of a plurality of primary particles, and a ratio of a c-axis length to an a-axis length of a crystal lattice of each of the primary particles is 4.9620 or more.
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 4/02 - Électrodes composées d'un ou comprenant un matériau actif
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
84.
POSITIVE ELECTRODE ACTIVE MATERIAL, NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, AND METHODS OF PRODUCING THEM
A positive electrode active material comprises a first active material, and a second active material having a greater average particle size than the first active material. Each of the first active material and the second active material is a lithium-(transition metal) composite oxide including Ni at 75 mol % or more relative to a total number of moles of metallic element except Li. The first active material is a single particle, or a secondary particle consisting of 2 to 10 primary particles aggregated together, and the second active material is a secondary particle consisting of at least 50 primary particles aggregated together. A crystallite size L1 of the first active material is 80,000 Å or more. A crystallite size L2 of the second active material is 2,000 Å or less. A crystallite size ratio of the first active material (L003/L104) is from 1.60 to 2.0.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
C01G 53/44 - Oxydes complexes contenant du nickel et au moins un autre élément métallique contenant des métaux alcalins, p. ex. LiNiO2 contenant du manganèse
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
85.
POSITIVE ELECTRODE ACTIVE MATERIAL AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
A positive electrode active material comprises a first active material, and a second active material having a greater average particle size than the first active material. Each of the first active material and the second active material is a lithium-(transition metal) composite oxide. The first active material is a single particle, or a secondary particle consisting of 2 to 10 primary particles aggregated together. The second active material is a secondary particle consisting of at least 50 primary particles aggregated together. A ratio (R/D150) of an average particle size (R) of the single particle or the primary particle of the first active material determined in a scanning electron microscope image to an average particle size (D150) of the first active material is 0.80 or more. An intensity ratio (I003/I104) of diffraction peaks of the first active material obtained by an X-ray diffraction method is 1.6 or more.
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 4/02 - Électrodes composées d'un ou comprenant un matériau actif
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
A separator includes a base portion and a protuberance portion protruding from the base portion in a first direction, wherein the protuberance portion includes a first portion and a second portion formed in one piece, the first portion has a shape symmetrical with respect to a first axis extending in the first direction, the second portion has a shape asymmetrical with respect to the first axis, and a volume of the first portion is larger than a volume of the second portion in the protuberance portion.
H01M 50/291 - MonturesBoîtiers secondaires ou cadresBâtis, modules ou blocsDispositifs de suspensionAmortisseursDispositifs de transport ou de manutentionSupports caractérisés par des éléments d’espacement ou des moyens de positionnement dans les racks, les cadres ou les blocs caractérisés par leur forme
H01M 50/209 - Bâtis, modules ou blocs de multiples batteries ou de multiples cellules caractérisés par leur forme adaptés aux cellules prismatiques ou rectangulaires
A power storage device includes a case having a case member made of metal and including a valve hole, a safety valve member made of metal and including a safety valve portion of a pressure relief type which fractures and opens when the internal pressure of the case exceeds a valve opening pressure, and a valve fixing resin member made of resin and encircling the safety valve member. The valve fixing resin member is interposed between a hole surrounding portion of the case member surrounding the valve hole and a peripheral portion of the safety valve member to be hermetically joined to these portions over the entire circumferences and fix the safety valve member to the case member.
In a prismatic secondary battery, a battery case includes a first wall portion and a second wall portion facing each other, the first wall portion is provided with a gas-discharge valve that is fractured when pressure in the battery case becomes equal to or more than a first pressure value, an adjacent member has a first surface facing an outer surface of the first wall portion, a space is formed in the adjacent member at a position facing the gas-discharge valve, a groove portion communicating with the space is formed in the first surface of the adjacent member, and when the pressure in the battery case is increased, a portion of the first wall portion is deformed to the outside of the battery case along the groove portion before reaching the first pressure value.
H01M 50/209 - Bâtis, modules ou blocs de multiples batteries ou de multiples cellules caractérisés par leur forme adaptés aux cellules prismatiques ou rectangulaires
89.
METHOD FOR MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL
The present disclosure has an object to provide a method for manufacturing a positive electrode active material in which performance degradations of a capacity characteristic and an output characteristic are suppressed. The herein disclosed method for manufacturing the positive electrode active material includes a preparation step for preparing an end material of a positive electrode plate containing a positive electrode active material that has never been performing intercalation and deintercalation of a charge carrier, an alkaline liquid immersing step for immersing the end material into an alkaline liquid, a solid-liquid separation step for performing a solid-liquid separation on the alkaline liquid after the alkaline liquid immersing step so as to collect the solid substance, a classifying step for classifying the collected solid substance into a fine particle fraction and a coarse particle fraction, and a baking step for baking the coarse particle fraction.
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 4/02 - Électrodes composées d'un ou comprenant un matériau actif
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
In a method for manufacturing a power storage device, when a surface position of an accuracy requiring surface of a sealing member is located on a back surface side relative to a support point, the surface position is displaced toward a front surface side in advance. It is determined whether a surface displacement amount of the accuracy requiring surface relative to the support point satisfies a required reference value. When the surface displacement amount is determined to not satisfy the reference value, the sealing member is corrected by a load applied to the accuracy requiring surface until a position corresponding to a corrective deformation amount determined by adding the surface displacement amount and an elastic deformation amount allowing the sealing member to restore by its own elastic force to a normal position at which the surface displacement amount is zero, and then the load is removed.
H01M 50/169 - Couvercles caractérisés par le procédé d’assemblage des boîtiers avec des couvercles par soudage, brasage ou brasage tendre
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 10/48 - Accumulateurs combinés à des dispositions pour mesurer, tester ou indiquer l'état des éléments, p. ex. le niveau ou la densité de l'électrolyte
A method for manufacturing a power storage device includes accumulating correlation graph data between a warpage displacement amount of a sealing member with respect to a support point in a front-back direction of the accuracy requiring surface and a corrective deformation amount of the accuracy requiring surface corrected by deformation in an opposite direction to the front-back direction until a position at which the accuracy requiring surface can restore by its own elastic force to a normal position, measuring a warpage displacement amount, and determining whether or not the warpage displacement amount satisfies a reference value. Correcting the sealing member includes applying a load to the accuracy requiring surface determined to fail to satisfy the reference value until a position corresponding to a corrective deformation amount determined when the measured warpage displacement amount coincides with the warpage displacement amount in the correlation graph data, and then removing the load.
G01B 11/16 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer la déformation dans un solide, p. ex. indicateur optique de déformation
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 50/169 - Couvercles caractérisés par le procédé d’assemblage des boîtiers avec des couvercles par soudage, brasage ou brasage tendre
92.
POWER STORAGE DEVICE AND METHOD OF MANUFACTURING THE POWER STORAGE DEVICE
A power storage device includes a safety valve in a case member made of metal. The case member has a valve periphery roughened portion around the safety valve on a case inner surface The power storage device includes a blockage preventing resin protrusion that is a protrusion made of resin and protruding to the inside. The blockage preventing resin protrusion is joined to the valve periphery roughened portion and reduces the possibility of a piece of the electrode body blocking the safety valve. Nanocolumns stand numerously on the valve periphery roughened portion, and the blockage preventing resin protrusion is joined to the valve periphery roughened portion such that a resin material fills gaps between the nanocolumns standing numerously.
H01M 50/474 - Éléments d'espacement à l'intérieur des cellules autres que les séparateurs, les membranes ou les diaphragmesLeurs procédés de fabrication caractérisés par leur position dans les cellules
H01M 50/103 - Boîtiers primairesFourreaux ou enveloppes caractérisés par leur forme ou leur structure physique prismatique ou rectangulaire
A machine learning system includes a display device and a learning device. The learning device causes a variable selection section in a learning execution screen of the display device to display a result of extracting candidate explanatory variables and candidate objective variables from a target file designated by a user. The learning device causes a result display section in the learning execution screen to display a result of analyzing, by machine learning, a relation between an explanatory variable and an objective variable selected by the user from among the candidate explanatory variables and the candidate objective variables displayed in the variable selection section.
A recycling method for a lithium ion secondary battery that can improve the implementation efficiency is provided. The recycling method for a lithium ion secondary battery disclosed herein includes a Li precipitating step of performing pulse charging and discharging on a lithium ion secondary battery in a low temperature environment so that Li is precipitated on a negative electrode, and an active material breaking step of repeatedly charging and discharging the lithium ion secondary battery in a range where a positive electrode is in a low potential region so that a positive electrode active material is broken.
H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
B09B 3/40 - Destruction de déchets solides ou transformation de déchets solides en quelque chose d'utile ou d'inoffensif impliquant un traitement thermique, p. ex. évaporation
B09B 3/70 - Traitement chimique, p. ex. ajustement du pH ou oxydation
B09B 3/80 - Destruction de déchets solides ou transformation de déchets solides en quelque chose d'utile ou d'inoffensif impliquant une étape d'extraction
A negative electrode composite material layer is configured with a laminate structure that consists of n layers (the n is a natural number being equal to or more than 2) from a first layer positioned closer to a negative electrode current collector foil to a nth layer positioned closer to a separator, here a binder content rate (A) of the nth layer is equal to or more than 5.0 wt % and not more than 35.0 wt % when a solid content weight of a whole of the nth layer is treated as 100 wt %, a binder content rate (B) of the first layer satisfies 1.10≤A/B≤62.50 when a solid content weight of a whole of the first layer is treated as 100 wt %. An average resistance value of the negative electrode composite material layer is equal to or more than 15 Ω/cm2 and not more than 50 Ω/cm2.
A battery system includes a battery, a first main relay, and a second main relay. The battery includes a positive electrode and a negative electrode. The first main relay is connected in series to the positive electrode of the battery. The second main relay is connected in series to the negative electrode of the battery. At least one of the first main relay and the second main relay includes a relay group including a plurality of relays connected in parallel.
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
B60L 58/10 - Procédés ou agencements de circuits pour surveiller ou commander des batteries ou des piles à combustible, spécialement adaptés pour des véhicules électriques pour la surveillance et la commande des batteries
G01R 31/3842 - Dispositions pour la surveillance de variables des batteries ou des accumulateurs, p. ex. état de charge combinant des mesures de tension et de courant
H01H 85/02 - Dispositifs de protection dans lesquels le courant circule à travers un organe en matière fusible et est interrompu par déplacement de la matière fusible lorsqu'il devient excessif Détails
H01M 10/42 - Procédés ou dispositions pour assurer le fonctionnement ou l'entretien des éléments secondaires ou des demi-éléments secondaires
H01M 50/583 - Dispositifs ou dispositions pour l’interruption du courant en réponse au courant, p. ex. fusibles
97.
METHOD FOR MANUFACTURING SECONDARY BATTERY AND SECONDARY BATTERY
The technique disclosed herein relates to a method for manufacturing a secondary battery, and includes an assembly producing step for producing an assembly in which an electrical collector terminal and an electrode assembly are connected, an electrode assembly accommodating step for accommodating the electrode assembly in an inside of a shrink pack that includes an upper opening and that is formed in a bag shape, an electrolytic solution liquid injection step for injecting an electrolytic solution to the inside of the shrink pack, an electrolytic solution osmosing step for making the electrolytic solution osmose to an inside of the electrode assembly, and a shrink pack heat-shrinking step for making the shrink pack be subjected to a heat shrink.
The present disclosure provides a non-aqueous electrolyte secondary battery, wherein a positive electrode active material layer includes a positive electrode active material represented by a formula (1), Li(1+x)NiyTizMe(1−y−z)O2, and when a specific surface area of a negative electrode active material layer is represented by S (m2/g), a relational formula (a), 10x+2
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 4/02 - Électrodes composées d'un ou comprenant un matériau actif
H01M 4/587 - Matériau carboné, p. ex. composés au graphite d'intercalation ou CFx pour insérer ou intercaler des métaux légers
An electricity storage device is provided in which, while a capacity maintenance rate and a high rate characteristic are maintained.
An electricity storage device is provided in which, while a capacity maintenance rate and a high rate characteristic are maintained.
In the electricity storage device, a membrane thickness of a positive electrode composite material layer is equal to or more than 40 μm and a membrane thickness of a negative electrode composite material layer is equal to or more than 50 μm. A binder content rate in the positive electrode composite material layer is equal to or more than 0.1 wt % and not more than 5.0 wt % when a solid content weight in the whole positive electrode composite material layer is treated as 100 wt %. A binder content rate in the negative electrode composite material layer is equal to or more than 1.0 wt % and not more than 12.0 wt % when a solid content weight of the whole negative electrode composite material layer is treated as 100 wt %.
There is provided a method for disassembling an electrode body including a separator separating step to separate the outermost separator of the separators and the active material layer at a boundary face with the active material layer by extending the outermost separator so that an extension point is serially moved along the boundary face, a separator peeling step to peel off the outermost separator that has been separated from the active material layer in the separator separating step, and a disassembling step to disassemble a stacked state of the electrode body for each partial electrode including the active material layer from which the outermost separator has been peeled off in the separator peeling step.
