A secondary battery and an electrical device comprising the secondary battery. The secondary battery includes a negative electrode sheet including a silicon-carbon composite material having a three-dimensional-network cross-linked pore structure, and an electrolyte including a first component including a cyclic functional group containing a sulfate group or a sulfonate group.
An electrode assembly comprises a plurality of structural units laminated in a first direction, the structural unit comprising a first plate and a second plate. The first electrode plate comprises a bending section and a plurality of straight sections, and two adjacent straight sections are spaced apart in a first direction and connected to one bent section. The second plate has a polarity opposite to that of the first plate, and alternates with the straight sections in the first direction.
H01M 10/0585 - Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
H01M 4/13 - Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulatorsProcesses of manufacture thereof
H01M 50/46 - Separators, membranes or diaphragms characterised by their combination with electrodes
3.
POSITIVE ELECTRODE ACTIVE MATERIAL, POSITIVE ELECTRODE PLATE, SECONDARY BATTERY, AND ELECTRIC DEVICE
Embodiments of this application relate to a positive electrode active material, a positive electrode plate, a secondary battery, and an electric device. The positive electrode active material includes a first active material and a second active material. The first active material includes a compound having a molecular formula of Li1+xFe1−yAyP1−zQzO4 and a modified compound thereof. The second active material includes a compound having a molecular formula of LihNijCokM1dM2eOfRg and a modified compound thereof. The embodiments of this application can improve capacity utilization and cycle performance of a secondary battery.
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01M 4/02 - Electrodes composed of, or comprising, active material
H01M 4/131 - Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
H01M 4/136 - Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
4.
BATTERY CELL, METHOD AND SYSTEM FOR MANUFACTURE SAME, BATTERY, AND POWER CONSUMING DEVICE
A battery cell, a method and system for manufacturing the battery cell, a battery, and a power consuming device are provided. The battery cell comprises: an electrode assembly comprising a first tab, wherein the first tab is arranged around a central axis of the electrode assembly; a housing configured to accommodate the electrode assembly, wherein the housing comprises a barrel and a cover connected to the barrel, the barrel is arranged around a periphery of the electrode assembly, the cover is provided with an electrode lead-out hole, the central axis extends in a first direction and passes through the electrode lead-out hole, the first tab comprises a first annular portion, and a projection of the first annular portion in the first direction does not overlap with a projection of the electrode lead-out hole in the first direction; and an electrode terminal comprising a columnar portion.
H01M 50/179 - Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for cells having curved cross-section, e.g. round or elliptic
H01M 50/107 - Primary casingsJackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
H01M 50/474 - Spacing elements inside cells other than separators, membranes or diaphragmsManufacturing processes thereof characterised by their position inside the cells
H01M 50/533 - Electrode connections inside a battery casing characterised by the shape of the leads or tabs
H01M 50/538 - Connection of several leads or tabs of wound or folded electrode stacks
H01M 50/566 - Terminals characterised by their manufacturing process by welding, soldering or brazing
5.
LOCKING MECHANISM, BATTERY ASSEMBLY, ELECTRIC DEVICE, AND LOCKING APPARATUS
A locking mechanism includes a locking member and an adjustment assembly. Along a second direction, a dimension of the locking member is adjustable to enable the locking member to have a locked state and an unlocked state; the locking member is configured to engage with a lock seat when in the locked state so that the locking mechanism engages with the lock seat along a first direction; and the locking member is configured to disengage from the lock seat when in the unlocked state to allow the locking mechanism to disengage from the lock seat along the first direction. The adjustment assembly is connected to the locking member, and the adjustment assembly can adjust the dimension of the locking member in the second direction to switch the locking member between the locked state and the unlocked state.
H01M 50/264 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
H01M 50/249 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders specially adapted for aircraft or vehicles, e.g. cars or trains
6.
SILICON-BASED NEGATIVE ELECTRODE ACTIVE MATERIAL, SECONDARY BATTERY, AND ELECTRIC DEVICE
A silicon-based negative electrode active material and a method of preparing the same. The silicon-based negative electrode active material includes silicate containing alkaline earth metal elements, and the silicon-based negative electrode active material contains both K element and P element. The method includes providing raw materials containing Si element, O element, K element, P element, and alkaline earth metal element, using a vapor deposition method to heat the raw materials to form vapor and then cool the vapor to form a deposit, and pulverizing the deposit to obtain a pulverized product.
A battery includes a battery cell, a first box including a first end wall, and a second box enclosing and forming a closed space for accommodating the battery cell together with the first box, the second box includes a second end wall and two third side walls, the second end wall is disposed opposite to the first end wall along a first direction, and the two third side walls are disposed opposite to each other along a third direction and connected to the second end wall. The third side wall includes a third surface facing the closed space, a fourth surface facing away from the closed space and a second side surface connecting the third surface and the fourth surface; and the second side surface includes a flat surface and a transition surface for hermetic connection with the first box, which are connected and have a smooth transition.
H01M 50/202 - Casings or frames around the primary casing of a single cell or a single battery
H01M 50/244 - Secondary casingsRacksSuspension devicesCarrying devicesHolders characterised by their mounting method
H01M 50/249 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders specially adapted for aircraft or vehicles, e.g. cars or trains
H01M 50/262 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders with fastening means, e.g. locks
H01M 50/271 - Lids or covers for the racks or secondary casings
Disclosed in the present disclosure are a battery cell, a battery and an electrical apparatus. The battery cell comprises a casing, an electrode assembly and an end cover assembly. The casing is provided with an accommodating chamber and an opening, the electrode assembly being arranged in the accommodating chamber, and the end cover assembly covering the opening. The electrode assembly comprises a positive electrode sheet, the positive electrode sheet comprising a positive electrode current collector and a positive electrode film layer located on at least one side of the positive electrode current collector. The positive electrode film layer comprises a positive electrode active material, the positive electrode active material comprising a layered lithium-containing transition metal oxide of monocrystal morphology. The bursting strength between the casing and the end cover assembly is greater than or equal to 1.2 MPa. The present disclosure can reduce exploding and bursting conditions occurring in thermal runaway processes of battery cells, and allows the battery cells to have high energy density and high reliability.
A battery cell, a battery, and a power consuming device are described. The battery cell includes a housing, an electrode terminal, and a protective member. The housing includes a first end wall, the electrode terminal is disposed on the first end wall, the protective member covers an outer surface of the first end wall, a first through hole is provided on the protective member, and the first through hole is configured to expose the electrode terminal. A cavity configured to store liquid is formed between the protective member and the first end wall. The battery cell has relatively high reliability.
H01M 50/103 - Primary casingsJackets or wrappings characterised by their shape or physical structure prismatic or rectangular
H01M 50/15 - Lids or covers characterised by their shape for prismatic or rectangular cells
H01M 50/588 - Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries outside the batteries, e.g. incorrect connections of terminals or busbars
H01M 50/682 - Containers for storing liquidsDelivery conduits therefor accommodated in battery or cell casings
A battery and an electric device are described. The battery comprises a positive electrode sheet. The positive electrode sheet contains a first positive electrode active material and a second positive electrode active material, and satisfies formula (I)
A battery and an electric device are described. The battery comprises a positive electrode sheet. The positive electrode sheet contains a first positive electrode active material and a second positive electrode active material, and satisfies formula (I)
0.1
<
A
×
B
C
×
R
≤
0.75
wherein A represents the mass percentage of the second positive electrode active material in the two positive electrode active materials; B represents the proportion, in the whole charging capacity, of charging capacity at 3.7 V or below of the second positive electrode active material measured by a single-particle microelectrode method; C represents the proportion, in the whole charging capacity, of charging capacity at 3.7 V or below of the battery; and R represents the resistance of the positive electrode sheet at 25° C., and the unit of R is Ω.
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/02 - Electrodes composed of, or comprising, active material
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
A battery and an electric device are described. The battery includes battery cells stacked in a first direction, including two first battery cells located at two ends in the first direction. Two adjacent battery cells are located between the two first battery cells with at least one first thermal management component, and one side of at least one of the first battery cells away from the first thermal management component in the first direction comprises at least one second thermal management component. In the first direction, the thickness of the at least one second thermal management component is less than that of the at least one first thermal management component, so that the amount by which the at least one second thermal management component may be compressed in the first direction matches the expansion amount of the first battery cell in the direction away from the first thermal management component.
A positive electrode material and a preparation method therefor, a positive electrode sheet, a secondary battery and an electric device. The positive electrode material comprises a conductive substrate material and an active material distributed on the conductive substrate material, wherein the active material comprises a nanoscale phosphate active material, and the conductive substrate material comprises doping-element-modified graphene; and based on the total weight of the positive electrode material, the weight content of the active material is 75-95%, and the weight content of the conductive substrate material is 5-25%. The positive electrode material is prepared by using the doping-element-modified graphene as a substrate material for loading nanoparticles of the phosphate active material; therefore, the agglomeration of the nanoscale phosphate positive electrode material can be reduced, the wettability of an electrolyte on the active material is improved, and the cycle performance of the positive electrode material is improved.
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
The present disclosure provides a battery cell, a battery, and an electric apparatus. The battery cell comprises an electrode assembly and an electrolyte, wherein the electrode assembly comprises a negative electrode sheet; the negative electrode sheet comprises a negative electrode current collector and a negative electrode film layer located on at least one side of the negative electrode current collector; the negative electrode film layer comprises a negative electrode active material; the negative electrode active material comprises a silicon-carbon composite material, and the silicon-carbon composite material comprises a carbon material matrix having a pore structure and a silicon-based material located in the pore structure of the carbon material matrix; and a ratio of the mass of the electrolyte to the capacity of the battery cell is 1.2 g/Ah-2.0 g/Ah. The battery of the present disclosure can achieve both high energy density and excellent cycle performance.
The present application provides a photovoltaic array test method and system, the method being applied to a photovoltaic array test system. The photovoltaic array test method comprises: obtaining the quantity of photovoltaic branches connected in a photovoltaic array; determining a reference electrical parameter according to the quantity of the photovoltaic branches and electrical parameters of the photovoltaic branches; if the photovoltaic array is electrically connected to the photovoltaic array test system, monitoring a test electrical parameter of the photovoltaic array; and determining a test result of the photovoltaic array according to the test electrical parameter and the reference electrical parameter.
A positive electrode plate includes a positive active material layer. The positive active material layer includes a first positive active material and a second positive active material. The first positive active material and the second positive active material each independently include a lithium-containing transition metal oxide. An outer surface of the second positive active material includes a passivation layer; and/or an average particle diameter Dv50 of the second positive active material is greater than an average particle diameter Dv50 of the first positive active material.
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01M 4/02 - Electrodes composed of, or comprising, active material
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
16.
PRESS PLATE MODULE, PRODUCTION LINE, AND CONTROL METHOD
A press plate module, a production line, and a control method are provided. The press plate module includes a press plate assembly and a mounting seat assembly. One of the mounting seat assembly and the press plate assembly is provided with a stop element, and the other is provided with a stop surface. The stop element is selectively extendable and retractable, and the press plate module includes a locked state and an unlocked state. In the locked state, the stop element is in an extended state and abuts against the stop surface, such that the press plate assembly is fixed with the mounting seat assembly, and the mounting seat assembly drives the press plate assembly to move, such that the press plate assembly presses against or separates from a battery. In the unlocked state, the stop element is in a retracted state and separated from the stop surface.
B23K 37/04 - Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work
A battery cell comprises: an electrode assembly, comprising: a positive electrode plate comprising a positive electrode current collector and a positive electrode active material layer at least located on the surface on one side of the positive electrode current collector; a negative electrode plate comprising a negative electrode current collector; a separator located between the positive electrode plate and the negative electrode plate; and an insulating member located at one end of the negative electrode plate and/or the positive electrode plate that is not covered by the separator.
H01M 10/42 - Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
H01M 10/054 - Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
H01M 10/0587 - Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
H01M 50/474 - Spacing elements inside cells other than separators, membranes or diaphragmsManufacturing processes thereof characterised by their position inside the cells
H01M 50/489 - Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
18.
THERMAL MANAGEMENT COMPONENT, BATTERY, AND ELECTRIC DEVICE
A thermal management component includes a bottom wall and two side walls, where the two side walls are arranged opposite each other on two sides of the bottom wall along a first direction, and the bottom wall and the two side walls jointly enclose an accommodating cavity for accommodating a battery cell; and a first flow channel is formed inside the bottom wall, a second flow channel is formed inside both the two side walls, and the first flow channel and the second flow channel are used for accommodating a heat exchange medium for adjusting a temperature of the battery cell; where a transition part is provided at bends of the bottom wall and the two side walls, a communicating flow channel is formed inside the transition part, and the communicating flow channel communicates the first flow channel and the second flow channel.
H01M 10/6568 - Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
B60L 50/60 - Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
This application provides a lower box body of a battery, the battery, and an electric apparatus. The lower box body of a battery includes a bottom protection plate; a side beam, where the bottom protection plate and the side beam jointly define a mounting space for mounting a battery cell of the battery, an assembly cavity is provided in the side beam, a reinforcing structure is disposed in the assembly cavity, and the reinforcing structure and the side beam are integrally formed to divide the assembly cavity into a plurality of sub-cavities; and a fastener, where the fastener penetrates a bottom wall of the side beam and the bottom protection plate and is connected to the reinforcing structure, so as to assemble the bottom protection plate at the side beam.
H01M 10/6556 - Solid parts with flow channel passages or pipes for heat exchange
H01M 50/249 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders specially adapted for aircraft or vehicles, e.g. cars or trains
H01M 50/262 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders with fastening means, e.g. locks
20.
POSITIVE ELECTRODE ACTIVE MATERIAL AND PREPARATION METHOD THEREOF, POSITIVE ELECTRODE PLATE, LITHIUM-ION SECONDARY BATTERY, AND BATTERY MODULE, BATTERY PACK, AND APPARATUS CONTAINING SUCH LITHIUM-ION SECONDARY BATTERY
A positive electrode active material and a preparation method thereof, a positive electrode plate, a lithium-ion secondary battery, and a battery module, battery pack, and apparatus containing such lithium-ion secondary battery are provided. The positive electrode active material includes matrix particles and a coating layer covering an exterior surface of the matrix particle, where the matrix particle includes a lithium nickel cobalt manganese oxide, and the coating layer includes an oxide of element M1; the matrix particle is doped with element M2 and element M3, element M2 in the matrix particle is uniformly distributed, and element M3 in the matrix particle has a decreasing concentration from the exterior surface to a core of the matrix particle; and element M1 and element M3 are each independently selected from one or more of Mg, Al, Ca, Ba, Ti, Zr, Zn, and B, and element M2 includes one or more of Si, Ti, Cr, Mo, V, Ge, Se, Zr, Nb, Ru, Rh, Pd, Sb, Te, Ce, and W.
A positive electrode plate, a battery, and an electrical device are provided. The positive electrode plate includes a first positive electrode active material and a second positive electrode active material, where the first positive electrode active material includes a compound LixNiyCozMkMepOrEs, and the second positive electrode active material includes a compound LiaAbMn1-cBcP1-dRdO4-nDn, where the following is satisfied: 0.90≤m/n≤1.20.
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
H01M 4/02 - Electrodes composed of, or comprising, active material
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
A nonaqueous electrolyte solution is described. The nonaqueous electrolyte solution includes at least one additive represented by general formula I and Na and/or K ions. The nonaqueous electrolyte solution is configured to prepare a lithium secondary battery, and can improve a cycle life of the lithium secondary battery at relatively high temperature, reduce a volume expansion rate of the lithium secondary battery stored at high temperature for a long time, and in turn, improve a capacity retention rate of the lithium secondary battery stored at relatively high temperature for a long time. A lithium secondary battery containing the nonaqueous electrolyte solution and an electrical device containing the lithium secondary battery are described.
H01M 10/0567 - Liquid materials characterised by the additives
H01M 4/02 - Electrodes composed of, or comprising, active material
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
H01M 10/0568 - Liquid materials characterised by the solutes
23.
CURRENT COLLECTOR AND PREPARATION METHOD THEREFOR, ELECTRODE PLATE, SECONDARY BATTERY, AND ELECTRIC DEVICE
A current collector may include a porous three-dimensional framework and a lithiophilic substance, where the lithiophilic substance may be distributed in pores of the porous three-dimensional framework. The current collector may include a first side used to face the separator, and a second side facing away from the first side. In a direction from the first side to the second side, the porous three-dimensional framework may include a first part and a second part, the thickness of the lithiophilic substance in the pores of the first part being less than the thickness of the lithiophilic substance in the pores of the second part. The thickness of the lithiophilic substance in the current collector may gradually increase in a thickness direction of the porous three-dimensional framework.
Provided are a thermal management component, a thermal management assembly, a battery, and an electric device. The thermal management component includes two straight walls and two bent walls. The two straight walls are arranged oppositely along a first direction. Each of the two bent walls is connected to one end of the straight walls along a second direction, where the second direction is perpendicular to the first direction. The two bent walls and the two straight walls enclose to form a holding space, and the holding space is configured to contain a heat exchange medium.
A secondary battery. The secondary battery includes a negative electrode plate and an electrolyte solution. The negative electrode plate of the secondary battery includes a silicon-carbon composite material having a three-dimensional network cross-linked pore structure; and the electrolyte solution of the secondary battery includes a cyclic carbonate compound shown in formula I.
The disclosure relates to an electrode assembly and its forming method and a manufacturing system, a secondary battery, a battery module and a device. The electrode assembly includes: a first electrode plate including a plurality of bending sections and a plurality of stacked first stacking sections, each bending section being configured to connect two adjacent first stacking sections, herein the bending section includes a guiding portion for guiding the bending section to be bent during production; and a second electrode plate with a polarity opposite to that of the first electrode plate, the second electrode plate including a plurality of second stacking sections, and each second stacking section being disposed between two adjacent first stacking sections.
An electrolyte for a sodium-ion secondary battery, a sodium-ion secondary battery, and an electric apparatus. The electrolyte for the sodium-ion secondary battery comprises a metal sodium salt and a solvent, wherein the desolvation energy of a sodium ion-solvent complex formed by sodium ions of the metal sodium salt and the solvent is less than or equal kJ/mol. In this way, the reaction kinetics of the sodium-ion secondary battery at a low temperature can be improved, and the low-temperature performance of the sodium-ion secondary battery is improved.
H01M 10/0569 - Liquid materials characterised by the solvents
H01M 4/02 - Electrodes composed of, or comprising, active material
H01M 4/1393 - Processes of manufacture of electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
H01M 4/1397 - Processes of manufacture of electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
H01M 4/583 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx
H01M 10/054 - Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
H01M 10/0568 - Liquid materials characterised by the solutes
28.
SEPARATOR, SECONDARY BATTERY, AND ELECTRICAL APPARATUS
The present application provides a separator, which includes a first base film and a second base film, where the melting point of the second base film is lower than the melting point of the first base film; the porosity of the first base film is denoted as P1, the porosity of the second base film is denoted as P2, and 1.02≤P1/P2≤3. The base film with high porosity has good air permeability, so the first base film with high porosity exhibits excellent air permeability. The base film with low porosity has good strength, so the second base film with low porosity exhibits good strength and is not easily punctured by lithium dendrites. Therefore, through the cooperation of the first base film and the second base film in the present application, the separator has good air permeability and strength, thus improving the reliability and cycling performance of the secondary battery.
Provided in the present application are a positive electrode active material and a preparation method therefor, a secondary battery, a battery module, a battery pack and an electric device. The positive electrode active material is used as a positive electrode active material for a secondary battery and comprises a carbon-material-compounded iron-based polyanionic compound and a magnesium-containing oxide, wherein the iron-based polyanionic compound has the following general formula: Na4Fe3-xMxMgy(PO4)2P2O7, where M comprises a transition metal element, 0≤x≤0.5, and 0
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
C01B 25/45 - Phosphates containing plural metal, or metal and ammonium
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
H01M 4/587 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
H01M 10/054 - Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
30.
ELECTRODE ASSEMBLY AND RELATED BATTERY, DEVICE, MANUFACTURING METHOD, AND MANUFACTURING DEVICE
An electrode assembly and related battery, device, manufacturing method, and manufacturing device are provided. In some embodiments, the electrode assembly includes: a first electrode plate and a second electrode plate that are of opposite polarities, where an active material region of the first electrode plate and an active material region of the second electrode plate are wound to form a body portion, a non-active material region of the first electrode plate or a non-active material region of the second electrode plate is wound to form a tab, and the tab includes a bend portion bent against the body portion; and a guide piece. At least a part of the guide piece is located in the bend portion, and the guide piece is configured to guide an electrolytic solution into an interior of the body portion.
H01M 50/538 - Connection of several leads or tabs of wound or folded electrode stacks
H01M 10/0587 - Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
Provided are an electrolyte, a battery, and a power-consuming device. The electrolyte is applicable to a lithium metal secondary battery. The electrolyte includes a lithium salt and a solvent. The solvent includes an epoxy compound substituted with a fluoroalkyl chain. Therefore, the use of the electrolyte including the epoxy compound substituted with the fluoroalkyl chain can improve cycle stability on both a positive electrode side and a negative electrode side of the battery, prolonging a cycle life of the battery.
H01M 10/0569 - Liquid materials characterised by the solvents
H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
H01M 10/0567 - Liquid materials characterised by the additives
32.
POSITIVE ELECTRODE ACTIVE MATERIAL AND PREPARATION METHOD THEREOF, POSITIVE ELECTRODE PLATE, LITHIUM-ION SECONDARY BATTERY, AND BATTERY MODULE, BATTERY PACK, AND APPARATUS CONTAINING SUCH LITHIUM-ION SECONDARY BATTERY
A positive electrode active material and a preparation method thereof, a positive electrode plate, a lithium-ion secondary battery, and a battery module, battery pack, and apparatus containing such lithium-ion secondary battery are provided. The positive electrode active material includes matrix particles and a coating layer covering an exterior surface of the matrix particle, where the matrix particle includes a lithium nickel cobalt manganese oxide, and the coating layer includes an oxide of element M1; the matrix particle is doped with element M2 and element M3, element M2 in the matrix particle is uniformly distributed, and element M3 in the matrix particle has a decreasing concentration from the exterior surface to a core of the matrix particle; and element M1 and element M3 are each independently selected from one or more of Mg, Al, Ca, Ba, Ti, Zr, Zn, and B, and element M2 includes one or more of Si, Ti, Cr, Mo, V, Ge, Se, Zr, Nb, Ru, Rh, Pd, Sb, Te, Ce, and W.
C01G 53/44 - Complex oxides containing nickel and at least one other metal element containing alkali metals, e.g. LiNiO2 containing manganese
H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
33.
POSITIVE ELECTRODE ACTIVE MATERIAL AND PREPARATION METHOD THEREOF, POSITIVE ELECTRODE PLATE, LITHIUM-ION SECONDARY BATTERY, AND BATTERY MODULE, BATTERY PACK, AND APPARATUS CONTAINING SUCH LITHIUM-ION SECONDARY BATTERY
A positive electrode active material and a preparation method thereof, a positive electrode plate, a lithium-ion secondary battery, and a battery module, battery pack, and apparatus containing such lithium-ion secondary battery are provided. The positive electrode active material includes matrix particles and a coating layer covering an exterior surface of the matrix particle, where the matrix particle includes a lithium nickel cobalt manganese oxide, and the coating layer includes an oxide of element M1; the matrix particle is doped with element M2 and element M3, element M2 in the matrix particle is uniformly distributed, and element M3 in the matrix particle has a decreasing concentration from the exterior surface to a core of the matrix particle; and element M1 and element M3 are each independently selected from one or more of Mg, Al, Ca, Ba, Ti, Zr, Zn, and B, and element M2 includes one or more of Si, Ti, Cr, Mo, V, Ge, Se, Zr, Nb, Ru, Rh, Pd, Sb, Te, Ce, and W.
This application provides a separator including a first base film and a second base film, where a melting point of the second base film is lower than a melting point of the first base film, and a swelling rate of the first base film is smaller than a swelling rate of the second base film. By cooperation of the two layers of base film structures, in a use environment of the separator, even if one layer of base film loses the insulation performance due to swelling, the other layer of base film can complement the performance, reducing the risk of short circuits between electrodes and also enhancing the strength of the separator, thereby improving the reliability of the battery in long-term service life.
The positive electrode material composition comprises a phosphate positive electrode material and a ternary positive electrode material, the weight of the phosphate positive electrode material is recorded as W1, the weight of the ternary positive electrode material is recorded as W2, α=W1/(W1+W2), 3%≤α≤50%, the phosphate positive electrode material is a single crystal material or has a single crystal core, and the ternary positive electrode material is a single crystal material or has a single crystal core. The phosphate positive electrode material has the advantages of strong stability of a phosphate polyanion material, good cycle stability and long service life, and the ternary positive electrode material has high energy density. A single crystal material has small BET specific surface area, stable structure, large compaction density, and better high-temperature storage performance.
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
H01M 4/02 - Electrodes composed of, or comprising, active material
H01M 4/136 - Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
36.
CURRENT COLLECTOR AND PREPARATION APPARATUS THEREOF, ELECTRODE PLATE, BATTERY, AND ELECTRICAL DEVICE
An embodiment of this application provides a current collector and a preparation apparatus thereof, an electrode plate, a battery, and an electrical device. The current collector includes a main region and a tab region disposed along a first direction. The main region includes a first metal. The first metal includes at least one of Ni, Fe, or stainless steel. The tab region includes a second metal. The second metal includes at least one of Cu, Ag, Au, or W, and optionally includes Cu.
Provided a method using of a compound as an electrolyte additive, an electrolyte, a battery and an electrical apparatus. The present application relates to the use of a compound shown in Formula I as an electrolyte additive. The compound in the present application can capture byproducts generated from oxidative decomposition products of electrolytes, thereby suppressing the increase in the interface impedance of negative electrode plates, and further improving the capacity and cycling performance of batteries.
Provided are a battery and an electrical equipment. The battery includes a battery pack, a first thermal management component, and thermal insulating member. The battery pack comprises multiple battery cells; along a first direction, the first thermal management component is arranged on one side of the battery pack, and the first thermal management component is configured to manage a temperature of the battery pack. Along the first direction, the thermal insulating member is positioned on the side of the first thermal management component facing away from the battery pack. A thermal insulating member is provided on the first thermal management component, and the thermal insulating member is located on the side of the first thermal management component facing away from the battery pack in the first direction.
A positive electrode active material comprises: an aggregate material, the chemical formula of the aggregate material being LiaNixCoyM1-x-yO2-b, wherein 0.6≤a≤1.2, 0.6≤x≤1, 0≤y≤0.4, and −0.1≤b≤0.1, and M comprises one or more of Mn, Al, B, Zr, Sr, Y, Sb, W, Ti, Mg, Nb, and Mo; primary particles of the aggregate material have a particles size of 100-600 nm, and the particle size distribution of the aggregate material satisfies (Dv90-Dv10)/Dv50≥1.6.
C01G 53/506 - Complex oxides containing nickel and at least one other metal element containing alkali metals, e.g. LiNiO2 containing manganese of the type (MnO2)n-, e.g. Li(NixMn1-x)O2 or Li(MyNixMn1-x-y)O2 containing lithium and cobalt with the molar ratio of nickel with respect to all the metals other than alkali metals higher than or equal to 0.5, e.g. Li(MzNixCoyMn1-x-y-z)O2 with x ≥ 0.5 with the molar ratio of nickel with respect to all the metals other than alkali metals higher than or equal to 0.8, e.g. Li(MzNixCoyMn1-x-y-z)O2 with x ≥ 0.8
40.
SECONDARY BATTERY, BATTERY MODULE, AND DEVICE USING SECONDARY BATTERY AS POWER SUPPLY
This application provides a secondary battery, a battery module, and a device using a secondary battery as a power supply. The secondary battery includes an electrode assembly, a cap assembly, and current collection members. The electrode assembly includes a main body and tabs that extend from the main body. The cap assembly includes a cap plate, electrode terminals, and an insulation baffle. The electrode terminals are disposed on the cap plate. The insulation baffle is connected to a side of the cap plate, where the side is close to the main body. The current collection members are at least partly located between the insulation baffle and the main body, and each of the current collection members includes a tab connection portion connected to one of the tabs. The insulation baffle contains a first recess.
H01M 50/533 - Electrode connections inside a battery casing characterised by the shape of the leads or tabs
H01M 50/204 - Racks, modules or packs for multiple batteries or multiple cells
H01M 50/249 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders specially adapted for aircraft or vehicles, e.g. cars or trains
H01M 50/547 - Terminals characterised by the disposition of the terminals on the cells
H01M 50/59 - Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
41.
POSITIVE ELECTRODE ACTIVE MATERIAL AND PREPARATION METHOD THEREFOR, SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK AND ELECTRIC DEVICE
A positive electrode active material, a secondary battery, a battery module, a battery pack, and an electric device. The positive electrode active material is used as a positive electrode active material for a secondary battery, and comprises a carbon material compounded iron-based polyanionic compound and an aluminum-containing oxide, and the iron-based polyanionic compound has the following general formula: Na4Fe3−xMxAly(PO4)2P2O7/C, wherein M comprises a transition metal element, 0≤x≤0.5, and y is greater than 0 and less than 0.2. The positive electrode active material has relatively low residual alkali amount, and the battery has excellent cycle performance and rate capability.
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
H01M 10/054 - Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
42.
POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREOF, POSITIVE ELECTRODE PLATE, SECONDARY BATTERY, AND ELECTRICAL DEVICE
A positive electrode material and a preparation method thereof, a positive electrode plate, a secondary battery, and an electrical device. The positive electrode material includes a conductive substrate material and an active material distributed on the conductive substrate material. The active material includes a nanoscale phosphate active material. The conductive substrate material includes doping element-modified graphene. Based on a total mass of the positive electrode material, a mass percent of the active material is 75% to 95%, and a mass percent of the conductive substrate material is 5% to 25%. The positive electrode material is prepared by using the doping element-modified graphene as a substrate material that carries nanoparticles of the phosphate active material.
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
C01B 25/45 - Phosphates containing plural metal, or metal and ammonium
A battery cell, a battery, and an electric device are disclosed. The battery cell includes a shell, lead-out components, electrode assemblies and an insulating bracket. The shell has a first wall, and the lead-out components are connected to the first wall. The electrode assemblies are accommodated in the shell. The electrode assembly includes a main body and tabs. The tabs are provided protruding from one end of the main body facing the first wall. The tabs are connected to the lead-out components. In the thickness direction of the first wall, the insulating bracket is provided between the first wall and the main body, and the insulating bracket is fixedly connected to the lead-out components. For the battery cell of this structure, the insulating bracket can be fastened to the first wall, such that the insulating bracket is fixed in the shell.
A separator, a method for preparing the same, and a secondary battery and an electrical device related the same are described. The separator includes a porous substrate and a coating disposed on at least one surface of the porous substrate, in which the coating includes a three-dimensional skeleton structure and fillers having a porous structure, and at least part of the fillers having the porous structure is filled into the three-dimensional skeleton structure.
H01M 50/451 - Separators, membranes or diaphragms characterised by the material having a layered structure comprising layers of only organic material and layers containing inorganic material
A material bin apparatus includes a base and a plurality of material bins. An accommodating space is formed in each material bins. The accommodating space is configured for stacking and storing a plurality of materials. The material bin includes a fixed member and a movable member. The fixed member is fixed to the base. The movable member is movably disposed on the base and defines the accommodating space with the fixed member. The movable members of at least some of the material bins can synchronously move away from or approach the fixed members.
B65H 1/14 - Supports or magazines for piles from which articles are to be separated with means for advancing the pile to present the articles to a separating device comprising positively-acting mechanical devices
B65H 1/28 - Supports or magazines for piles from which articles are to be separated compartmented to receive piles side by side
Battery production method includes determining quantity of first battery cells based on current first production work order in process of producing products by production device in first process of battery production line; determining quantity of second battery cells; if greater than or equal to the quantity of the first battery cells, sending control instruction to first production device in the first process, and taking next first production work order as the current first production work order; determining quantity of unfinished battery packs on station device for current second production work order and sending the quantity of the unfinished battery packs to the station device in process of producing products by the station device in the second process of the battery production line; and when the quantity of the unfinished battery packs is zero, taking next second production work order as the current second production work order.
G05B 19/4155 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by programme execution, i.e. part programme or machine function execution, e.g. selection of a programme
47.
POSITIVE ELECTRODE PLATE AND MANUFACTURING METHOD THEREFOR, BATTERY CELL, BATTERY, AND ELECTRICAL APPARATUS
The positive electrode plate comprises a current collector, a first positive electrode active material layer, and a second positive electrode active material layer; the first positive electrode active material layer is arranged on at least one side of the current collector, and the second positive electrode active material layer is arranged on the first positive electrode active material layer; the first positive electrode active material layer comprises a first positive electrode active material, the second positive electrode active material layer comprises a second positive electrode active material, the first positive electrode active material comprises a lithium-containing phosphate of olivine structure, and the second positive electrode active material comprises a cobalt-containing lithium metal oxide. The positive electrode plate can effectively improve the influence of the concentration polarization of a battery on the performance of the battery, thereby helping to improve the capacity and cycle performance of the battery.
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01M 4/02 - Electrodes composed of, or comprising, active material
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
A battery and an electrical device. The battery includes: a battery cell; a first box, where the first box includes a first end wall and a first side wall; and a second box, where the second box and the first box are connected to each other to jointly enclose and form a closed space for accommodating the battery cell, the second box includes a second end wall, the second end wall is disposed opposite to the first end wall along a first direction, the second box has a first side surface in a second direction, and the first direction intersects with the second direction. One end of the first side wall is connected to the first end wall, and the other end of the first side wall is connected to the first side surface.
H01M 50/233 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by physical properties of casings or racks, e.g. dimensions
H01M 50/244 - Secondary casingsRacksSuspension devicesCarrying devicesHolders characterised by their mounting method
H01M 50/262 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders with fastening means, e.g. locks
A cell feeding method includes: controlling a first conveyor line to convey inflowing cells to a first material fetching position; controlling a second conveyor line to convey inflowing cells to a second material fetching position; controlling a third conveyor line to convey inflowing cells to a side taping station, and conveying the cells subjected to side taping treatment to a third material fetching position; controlling a first feeding and grabbing mechanism to grab a first number of cells from a first material fetching position to a first feeding area in the feeder position; and controlling a second feeding and grabbing mechanism to grab a first number of cells from a target material fetching position to a second feeding area in the feeder position.
A connection structure, provided with a medium channel, at least part of the medium channel being configured for insertion of an external connector and allowing a variable axial position of the external connector relative to the medium channel. A heat exchange device, including the external connector and the connection structure, the external connector being inserted into the medium channel of the connection structure and having a variable axial position relative to the medium channel. The connection structure allows the variable axial position of the external connector relative to the medium channel, absorbs assembly tolerances caused by manufacturing tolerances and installation tolerances of components, and meanwhile reduces the number of components used and the assembly space.
The present application provides a positive electrode active material, a preparation method therefor, a secondary battery, and an electrical apparatus. The chemical formula of the positive electrode active material is LiaNixCoyM1−x−yO2, where M comprises one or more of Mn, Al, B, Zr, Sr, Y, Sb, W, Ti, Mg and Nb, 0.55≤x≤1.0, 0≤y≤0.45, 0.8≤a≤1.2, the positive electrode active material being a hollow structure, and the inner diameter d1 of the hollow structure being 0.3 μm-5 μm.
C01G 53/506 - Complex oxides containing nickel and at least one other metal element containing alkali metals, e.g. LiNiO2 containing manganese of the type (MnO2)n-, e.g. Li(NixMn1-x)O2 or Li(MyNixMn1-x-y)O2 containing lithium and cobalt with the molar ratio of nickel with respect to all the metals other than alkali metals higher than or equal to 0.5, e.g. Li(MzNixCoyMn1-x-y-z)O2 with x ≥ 0.5 with the molar ratio of nickel with respect to all the metals other than alkali metals higher than or equal to 0.8, e.g. Li(MzNixCoyMn1-x-y-z)O2 with x ≥ 0.8
A secondary battery comprises a negative electrode sheet and an electrolyte; where the negative electrode sheet comprises a silicon-carbon composite material having a three-dimensional network cross-linked pore structure; and the electrolyte contains a first component, the first component containing at least one of compounds represented by formula I and formula II.
A secondary battery includes a negative electrode plate and an electrolyte solution. The negative electrode plate includes a silicon-carbon composite material having a three-dimensional cross-linked pore network structure. The electrolyte solution includes a first component, and the first component includes one or more of compounds represented by Formula (I) and Formula (II) in this disclosure, in which R1, R2, R3, and R4 includes at least one of a hydrogen atom, a fluorine atom, and a fluorine-substituted or fluorine-unsubstituted C1-C4 alkyl group, and Formula (I) includes fluorine element.
A secondary battery and an electrical apparatus comprising the secondary battery. The secondary battery comprises: a negative pole piece and an electrolyte. The negative pole piece of the secondary battery comprises a silicon-carbon composite material having a three-dimensional-network cross-linked pore structure, and the electrolyte of the secondary battery comprises lithium fluorosulfonyl imide.
A secondary battery and an electrical device including the secondary battery. The secondary battery includes a negative electrode and an electrolyte. The negative electrode of the secondary battery includes a silicon-carbon composite material having a three-dimensional network cross-linked pore structure, and the electrolyte of the secondary battery includes dimethyl carbonate.
A lithium secondary battery includes a positive electrode plate and a negative electrode plate; the lithium content per unit area on a single side surface of the positive electrode plate is denoted as Wa in g/m2; the lithium content per unit area on a single side surface of the negative electrode plate is denoted as Wc in g/m2; the reversible capacity per unit area on the surface of the side of the negative electrode plate facing towards the positive electrode plate is denoted as Da in mAh/m2; the first lithiation capacity per unit area on the surface of the side of the negative electrode plate facing away from the positive electrode plate is denoted as Ca in mAh/m2; and the lithium secondary battery meets the following conditions:
A lithium secondary battery includes a positive electrode plate and a negative electrode plate; the lithium content per unit area on a single side surface of the positive electrode plate is denoted as Wa in g/m2; the lithium content per unit area on a single side surface of the negative electrode plate is denoted as Wc in g/m2; the reversible capacity per unit area on the surface of the side of the negative electrode plate facing towards the positive electrode plate is denoted as Da in mAh/m2; the first lithiation capacity per unit area on the surface of the side of the negative electrode plate facing away from the positive electrode plate is denoted as Ca in mAh/m2; and the lithium secondary battery meets the following conditions:
70
%
≤
C
1
×
(
Wa
+
Wc
)
Da
≤
90
%
,
and
/
or
,
63
%
≤
C
1
×
(
Wa
+
Wc
)
Ca
≤
81
%
,
wherein C1 is the theoretical capacity, 3,861 mAh/g, of lithium metal.
A positive electrode plate includes: a positive electrode current collector and a positive electrode active material layer disposed on a surface of at least one side of the positive electrode current collector and including a positive electrode active material. The positive electrode active material includes a sodium-containing positive electrode active material. A thickness of the positive active plate satisfies that Dmax/Dmin is 104.5% to 300%, where for a battery assembled from the positive electrode plate and a negative electrode plate, Dmax is a thickness of the positive electrode plate of the battery at 0% SOC, and Dmin is a thickness of the positive electrode plate of the battery at 100% SOC. The negative electrode plate includes a negative electrode current collector, and when the battery is at 100% SOC, a surface of at least one side of the negative electrode current collector has a sodium metal layer.
H01M 4/38 - Selection of substances as active materials, active masses, active liquids of elements or alloys
H01M 4/02 - Electrodes composed of, or comprising, active material
H01M 4/485 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
A separator is provided, comprising a first porous base film, a second porous base film, and a porous coating positioned between the first and second porous base films. The porous coating includes a binder and filler particles. At least a portion of the filler particles is embedded into the first porous base film and/or the second porous base film to a depth of at least 1 μm. The binder facilitates adhesion between the porous coating and the base films. The embedding of filler particles enhances the bonding strength between the porous coating and the base films, which in turn improves the separator's thermal stability and resistance to nail penetration. These improvements contribute to enhanced safety and reliability of the battery incorporating the separator.
Embodiments of this application provide a positive electrode active material, a battery cell, a battery, and a power consuming apparatus. The positive electrode active material includes: a matrix, where a chemical formula of the matrix is Li[LixNiaCobMncMd]O2, M includes at least one of Mg, Nb, Cr, Ce, Fe, Ta, B, Al, V, Ti, Zr, Sn, P, and Mo, x+a+b+c+d=1, x>0, a>0, 00, and d≥0; and a coating layer, where the coating layer is disposed on a surface of the matrix, and the coating layer includes boron-containing alloy. The technical solutions of this application can improve an energy retention rate and an initial gram capacity of a battery.
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
B60L 50/64 - Constructional details of batteries specially adapted for electric vehicles
C01G 53/50 - Complex oxides containing nickel and at least one other metal element containing alkali metals, e.g. LiNiO2 containing manganese of the type (MnO2)n-, e.g. Li(NixMn1-x)O2 or Li(MyNixMn1-x-y)O2
H01M 4/38 - Selection of substances as active materials, active masses, active liquids of elements or alloys
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
60.
STACKING APPARATUS, BATTERY PRODUCTION LINE, AND STACKING METHOD
A stacking apparatus configured to stack workpieces into a neat workpiece queue, where the workpiece queue includes a plurality of workpieces. The stacking apparatus includes: a base bracket; a stacking table for carrying at least one workpiece, where the stacking table is arranged on the base bracket; and at least two shapers, where the shapers act in pairs to perform an alignment operation for aligning the workpieces on the stacking table, paired shapers are configured in such a way that at least one of the actions enables the paired shapers to approach or move away from each other along a first direction above the stacking table, and the alignment operation is performed through the approaching action of the shapers, to obtain the neat workpiece queue through stacking.
A battery manufacturing method is applied to the battery manufacturing system. The battery manufacturing system includes a controller and production equipment. The battery manufacturing method includes: during product production by production equipment in any process of a battery production line, obtaining, by the controller, product information, where the production equipment is equipment corresponding to any process in a battery group production line; and in a case that the product information meets a product switching condition, controlling, by the controller, the production equipment to switch to producing a new-model product.
G05B 19/418 - Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
H01M 10/04 - Construction or manufacture in general
62.
CLAMPING MODULE, GRABBING DEVICE, BATTERY PRODUCTION LINE, CLAMPING METHOD, AND TRANSFER METHOD
A clamping jaw includes a first clamping piece and a second clamping piece. A direction in which the first clamping piece and the second clamping piece are arranged opposite each other is a first direction. A first drive component is configured to drive the first clamping piece to move along the first direction. A mounting base is arranged on the second clamping piece. The second clamping piece is able to move relative to the mounting base along the first direction. The mounting base is provided with a force applying portion that is spaced away from the second clamping piece. An elastic member is in contact with the second clamping piece and the force applying portion. A second drive component is configured to drive the mounting base to move along the first direction.
This application provides a positive active material, a positive electrode plate, an electrochemical energy storage apparatus, and an apparatus. The positive active material is LixNiyCozMkMepOrAm, or LixNiyCozMkMepOrAm with a coating layer on its surface; and the positive active material is single crystal or quasi-single crystal particles, and a particle size Dn10 of the positive active material satisfies: 0.3 μm≤Dn10≤2 μm. In this application, particle morphology of the positive active material and an amount of micro powder in the positive active material are properly controlled, to effectively reduce side reactions between the positive active material and an electrolyte solution, decrease gas production of the electrochemical energy storage apparatus, and improve storage performance of the electrochemical energy storage apparatus without deteriorating an energy density, cycle performance, and rate performance of the electrochemical energy storage apparatus.
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
C01G 53/50 - Complex oxides containing nickel and at least one other metal element containing alkali metals, e.g. LiNiO2 containing manganese of the type (MnO2)n-, e.g. Li(NixMn1-x)O2 or Li(MyNixMn1-x-y)O2
H01M 4/02 - Electrodes composed of, or comprising, active material
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
64.
PRESSURIZING MECHANISM, PRESSURIZING APPARATUS, SILO APPARATUS, AND BATTERY PRODUCTION LINE
A pressurizing mechanism, a pressurizing apparatus, a silo apparatus, and a battery production line are disclosed. The pressurizing mechanism includes a base and a pressurizing piece. The base is provided with a positioning key. The pressurizing piece is provided with a positioning groove. The positioning key is fitted to the positioning groove to position the pressurizing piece and the base. The positioning groove is provided with an insertion opening running through a bottom wall of the pressurizing piece, and the positioning key is inserted into the positioning groove through the insertion opening.
The present application provides a polymer and a preparation method therefor, a positive electrode, a secondary battery, and an electrical device. The polymer includes a first polymer. The first polymer includes a structural unit represented by formula (1), where in formula (1), R1, R12, and R13 each independently include a hydrogen atom or a substituted or unsubstituted C1-C5 alkyl group; and when substituted, the substituent includes a halogen atom.
The present application provides a polymer and a preparation method therefor, a positive electrode, a secondary battery, and an electrical device. The polymer includes a first polymer. The first polymer includes a structural unit represented by formula (1), where in formula (1), R1, R12, and R13 each independently include a hydrogen atom or a substituted or unsubstituted C1-C5 alkyl group; and when substituted, the substituent includes a halogen atom.
A jelly roll battery cell, a battery, a battery assembly and an electric device. The jelly roll battery cell includes a main body portion and a tab portion; one side of each positive winding portion in one part of positive winding portions is connected to one positive tab, and one side of each positive winding portion in the other part of the positive winding portions is connected to two positive tabs; and/or, one side of each negative winding portion in one part of negative winding portions is connected to one negative tab, and one side of each negative winding portion in the other part of the negative winding portions is connected to two negative tabs.
H01M 50/538 - Connection of several leads or tabs of wound or folded electrode stacks
B60L 50/60 - Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
H01M 10/0587 - Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
H01M 50/533 - Electrode connections inside a battery casing characterised by the shape of the leads or tabs
67.
BATTERY CELL, BATTERY, AND POWER CONSUMING APPARATUS
Provided are a battery cell, a battery, and a power consuming device. The battery cell includes: an electrode assembly, where the electrode assembly includes a positive electrode plate and a negative electrode plate; and an electrolyte solution, where the electrolyte solution includes a first electrolyte salt, and a molecular formula of the first electrolyte salt is:
Provided are a battery cell, a battery, and a power consuming device. The battery cell includes: an electrode assembly, where the electrode assembly includes a positive electrode plate and a negative electrode plate; and an electrolyte solution, where the electrolyte solution includes a first electrolyte salt, and a molecular formula of the first electrolyte salt is:
Provided are a battery cell, a battery, and a power consuming device. The battery cell includes: an electrode assembly, where the electrode assembly includes a positive electrode plate and a negative electrode plate; and an electrolyte solution, where the electrolyte solution includes a first electrolyte salt, and a molecular formula of the first electrolyte salt is:
where R1 is one of Li, Na, K, Mg, and Al, R2 is at least one of element O, element S, element F, and C1-C3 alkyl or C1-C3 alkyl substituted with element F, and based on 100 parts by weight of the electrolyte solution, content W1 of the first electrolyte salt ranges from 2 parts by weight to 20 parts by weight. According to the technical solution of this application, energy density and safety performance of the battery can be improved.
A heat exchange assembly, a battery and an electrical device are disclosed. The heat exchange assembly includes a current collecting piece and a plurality of heat exchange pieces. The heat exchange piece is constructed with a first flow channel and a first joint portion communicating with the first flow channel. The current collecting piece is constructed with a second flow channel and a plurality of second joint portions. The plurality of second joint portions each communicate with the second flow channel and are configured to be connected to the first joint portions of the plurality of heat exchange pieces respectively, such that the second flow channel of the current collecting piece communicates with the first flow channels of the plurality of heat exchange pieces. When the heat exchange assembly and battery units form a group, the assembly procedure is simple, and the assembly and fabrication efficiency is high.
H01M 10/6568 - Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
H01M 50/503 - Interconnectors for connecting terminals of adjacent batteriesInterconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
69.
PRODUCT CHANGEOVER METHOD AND SYSTEM FOR PRODUCTION LINE
A product changeover method for production line includes: determining, in response to a product changeover instruction, size information of a product to be produced; determining correspondingly, based on the size information of the product to be produced, a target value of a control parameter for at least one flexible module in a production device; and sending the target value corresponding to the control parameter of the at least one flexible module to a controller of a corresponding flexible module so as to process an incoming material of the product to be produced.
G05B 19/418 - Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
70.
BATTERY SYSTEM, CHARGING CONTROL DEVICE, AND BATTERY PACK CHARGING METHOD
A battery system comprises: a battery pack comprising at least one battery cell, and a temperature sensor, a battery management system and a heating apparatus, wherein a positive-electrode active material of the battery cell comprises a lithium-containing transition metal phosphate, the lithium-containing transition metal phosphate at least comprising a manganese element; the temperature sensor is used for acquiring the temperature of the battery cell; and the battery management system is used for acquiring a first state parameter of the battery cell before and/or during a charging process of the battery cell, the first state parameter of the battery cell being used for generating a control instruction for the heating apparatus, and the control instruction being used for controlling the heating apparatus to heat the battery cell.
H01M 10/633 - Control systems characterised by algorithms, flow charts, software details or the like
B60L 53/60 - Monitoring or controlling charging stations
B60L 58/12 - Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
H01M 10/637 - Control systems characterised by the use of reversible temperature-sensitive devices, e.g. NTC, PTC or bimetal devicesControl systems characterised by control of the internal current flowing through the cells, e.g. by switching
71.
POSITIVE ELECTRODE PLATE AND PREPARATION METHOD THEREFOR, BATTERY CELL, BATTERY, AND ELECTRIC DEVICE
A positive electrode plate and a preparation method therefor, a battery cell, a battery, and an electric device are described. The positive electrode plate includes: an active material layer, where the active material layer includes a first active material, a conductive agent, and a binder. The first active material includes a layered transition metal oxide, and the binder includes a flexible binder, configured to bind the first active material and the conductive agent. Performance of a battery including the positive electrode plate is improved.
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01M 4/02 - Electrodes composed of, or comprising, active material
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
72.
CLAMPING APPARATUS, BATTERY PRODUCTION LINE AND TRANSFER METHOD
A clamping apparatus, includes: a support assembly including a first driving module and clamping mechanisms disposed on the support assembly and including at least one first clamping mechanism and at least one second clamping mechanism arranged along a first direction. When the clamping apparatus is in a first state, an opening direction of a clamping opening of the first clamping mechanism faces away from the second clamping mechanism. When the clamping apparatus is in a second state, the opening direction of the clamping opening of the first clamping mechanism faces towards the second clamping mechanism. The opening direction of the clamping opening of the first clamping mechanism is consistent with an opening direction of a clamping opening of the second clamping mechanism. The first driving module drives the first clamping mechanism to rotate, such that the clamping apparatus switches between the first state and the second state.
An insulation withstand voltage testing method includes applying a direct-current voltage from a zero voltage to a target voltage to a battery cell in a first preset time period using a voltage applying circuit in response to a testing start signal; obtaining a first current value generated by the battery cell based on the direct-current voltage in the first preset time period; continuously applying the direct-current voltage of the target voltage to the battery cell in a second preset time period using the voltage applying circuit; obtaining a second current value generated by the battery cell based on the direct-current voltage in the second preset time period; and if the first current value is less than a first preset current threshold, and the second current value is less than a second preset current threshold, determining that the battery cell passes insulation withstand voltage testing of this time.
A silicon-based negative electrode active material comprises Si and MSiO3, where M comprises one or more alkaline earth metal elements. An XRD diffraction pattern of the silicon-based negative electrode active material has a first diffraction peak at a diffraction angle 2θ between 26° and 26.8° with a half peak width of βA, and a second diffraction peak at a diffraction angle 2θ between 31° and 32° with a half peak width of βB. The silicon-based negative electrode active material satisfies 1.5≤βA/βB≤ 5.0.
A battery cell includes a shell, an electrode assembly, and a pressure relief mechanism, a battery, and an electrical device. The electrode assembly includes a main body part and a tab. The shell includes a first wall part and a second wall part. Along a second direction, the first wall part and the second wall part are arranged opposite to each other. A channel gap is formed between the second wall part and the main body part. The channel gap is configured to connect spaces in the shell that are located at both ends of the main body part along the first direction. The second direction intersects with the first direction. The pressure relief mechanism is arranged on the first wall part, and along the first direction, a center of the pressure relief mechanism deviates from a center of the first wall part.
H01M 50/103 - Primary casingsJackets or wrappings characterised by their shape or physical structure prismatic or rectangular
H01M 50/586 - Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries inside the batteries, e.g. incorrect connections of electrodes
H01M 50/59 - Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
76.
POSITIVE ELECTRODE ACTIVE MATERIAL COMPOSITION, POSITIVE ELECTRODE PLATE, BATTERY, AND ELECTRIC APPARATUS
A positive electrode active material composition, a positive electrode plate, a battery, and an electric apparatus are described. The positive electrode active material composition includes a first positive electrode active material and a second positive electrode active material, where the first positive electrode active material includes a core LiaAbMnfB1-fP1-dRdO4-nDn and a coating layer covering the core, and the second positive electrode active material includes a compound LiNixCoyM1-x-yO2; and 0.018m+0.003f≤z≤0.02m+0.02f is satisfied.
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01M 4/02 - Electrodes composed of, or comprising, active material
H01M 4/131 - Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
H01M 4/133 - Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
H01M 4/136 - Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
H01M 4/587 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
A battery cell comprises: terminals and a battery core assembly; the battery core assembly comprises active substance coated parts and a plurality of tab pieces extending from the active substance coated parts in a first direction; the ends of the plurality of tab pieces close to an active substance coated part close up to form a first closing-up part, and the ends of the plurality of tab pieces away from the active substance coated part close up and connect to each other to form a second closing-up part, the first closing-up part being connected to the second closing-up part and the active substance coated part, and the orthographic projection of the end of the second closing-up part connected to the first closing-up part on a terminal in the first direction being at least partially located in the outer contour range of the terminal.
A positive electrode active material and a preparation method therefor, a positive electrode sheet, a battery and an electric device. The positive electrode active material comprises: a core; and a carbon coating layer which covers at least part of the surface of the core, the molar ratio of sp3 hybridized carbon atoms to sp2 hybridized carbon atoms in the carbon coating layer being not less than 0.5.
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
C01B 25/45 - Phosphates containing plural metal, or metal and ammonium
H01M 4/02 - Electrodes composed of, or comprising, active material
H01M 4/136 - Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
H01M 10/42 - Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
79.
LITHIUM SECONDARY BATTERY AND ELECTRICAL APPARATUS
A lithium secondary battery includes positive and negative electrode plates. The positive-electrode active material layer includes a positive-electrode active material Li1+aM1bFe1-cAcP1-dEdO4 with a mass ratio of not less than 85 wt %. The negative-electrode active material layer includes graphite with a mass ratio of not less than 85 wt %. Areal density, CWc in g/1540.25 mm2, and reversible lithium capacity, Dc in mAh/1540.25 mm2, of the positive-electrode active material layer on one side of the positive electrode plate, reversible lithium capacity, Da in mAh/1540.25 mm2, of the negative-electrode active material layer on the side of the negative electrode plate facing the positive electrode plate, first lithiation capacity, Ca in mAh/1540.25 mm2, of the negative-electrode active material layer on the side of the negative electrode plate away from the positive electrode plate, and conductivity, ρ at 25° C. in S/cm, of the electrolyte solution satisfy equations 1 and 2 described in the disclosure.
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
H01M 4/02 - Electrodes composed of, or comprising, active material
H01M 4/583 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx
A polymer includes an organic polymer and an inorganic compound. Polymerization monomers of the organic polymer include a first monomer and a second monomer. A structural formula of the first monomer includes:
A polymer includes an organic polymer and an inorganic compound. Polymerization monomers of the organic polymer include a first monomer and a second monomer. A structural formula of the first monomer includes:
A polymer includes an organic polymer and an inorganic compound. Polymerization monomers of the organic polymer include a first monomer and a second monomer. A structural formula of the first monomer includes:
where, R1 includes a hydrogen atom or a C1 to C6 alkyl group; R2 includes a hydrogen atom, a substituted or unsubstituted C1 to C21 alkyl group, a C3 to C6 cycloalkyl group, and a substituted or unsubstituted isobornyl group; and a substituent in the substituted C1 to C21 alkyl group includes a hydroxyl group; and the second monomer includes an alkenyl group.
A battery includes a battery cell and a thermal management component. The battery cell includes a first surface and a second surface, and the thermal management component includes a first thermal management component and a second thermal management component. The first thermal management component is arranged on the first surface, and the first thermal management component is configured to adjust the temperature of the battery cell. The second thermal management component is arranged on the second surface, and the second thermal management component is configured to adjust the temperature of the battery cell.
H01M 10/659 - Means for temperature control structurally associated with the cells by heat storage or buffering, e.g. heat capacity or liquid-solid phase changes or transition
H01M 50/209 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
82.
NON-AQUEOUS ELECTROLYTE, SECONDARY BATTERY, AND ELECTRICAL APPARATUS
Provided are a non-aqueous electrolyte, a secondary battery, and an electrical apparatus. The non-aqueous electrolyte comprises an additive, the additive comprising a cyclic sulfate ester compound having the structure shown in general formula (I), wherein R1, R2, R3, R4, R5, and R6 are each independently selected from any one of: a group having the structure shown in general formula (II), a hydrogen atom, a halogen atom, a C1-C6 alkyl group, a C1-C6 haloalkyl group, a C1-C6 alkoxy group, a C1-C6 haloalkoxy group, a C2-C6 alkenyl group, a C2-C6 ester group, a cyano group, and a sulfonic acid group, where n1, n2 and n3 are each independently any integer 0-2.
A tray is provided with a carrying region for carrying at least one workpiece. The tray includes a base plate, a fixing plate, and a clamping assembly. The fixing plate is arranged on a side of the base plate along a first direction and configured to block the workpiece. The clamping assembly includes two first clamping pieces and at least one second clamping piece. The two first clamping pieces extend along the first direction and are spaced apart on two opposite sides of the base plate in a manner of moving towards each other along a second direction. The second clamping piece is arranged on a side opposite the fixing plate and located between the two first clamping pieces. The second clamping piece is configured to be capable of moving towards or away from the fixing plate along the first direction; and the first direction intersects with the second direction.
B65D 85/68 - Containers, packaging elements or packages, specially adapted for particular articles or materials for machines, engines or vehicles in assembled or dismantled form
A negative electrode current collector may comprise a metal substrate and a conductive layer provided on at least one surface of the metal substrate, the negative electrode current collector may have a Vickers hardness of 400 MPa-900 MPa, and the conductive layer may have a thickness of 0.5 μm-6 μm.
A battery cell comprises: a casing assembly and a battery cell assembly, wherein the casing assembly comprises a casing and a first terminal arranged on the casing; and the battery cell assembly comprises an active-material coated portion and a conductive portion, the active-material coated portion being accommodated in the casing, the conductive portion being used for electrically connecting to the active-material coated portion and the first terminal, the first terminal being provided with an accommodating portion, and the conductive portion being at least partially accommodated in the accommodating portion.
A battery comprises a battery case, a pressure relief mechanism, and a first negative pressure mechanism. The pressure relief mechanism is arranged at a wall portion of the battery case, and the pressure relief mechanism is used for relieving the internal pressure of the battery case when the internal pressure or temperature of the battery case reaches a threshold value. The first negative pressure mechanism is connected to the pressure relief mechanism, and the first negative pressure mechanism is used for generating a negative pressure, so as to direct gas in the battery case to move towards the pressure relief mechanism.
H01M 50/204 - Racks, modules or packs for multiple batteries or multiple cells
H01M 50/289 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by spacing elements or positioning means within frames, racks or packs
H01M 50/375 - Vent means sensitive to or responsive to temperature
87.
NEGATIVE ELECTRODE ACTIVE MATERIAL AND PREPARATION METHOD THEREFOR, NEGATIVE ELECTRODE PLATE, BATTERY, AND ELECTRICAL DEVICE
This application discloses a negative electrode active material and a preparation method therefor, a negative electrode plate, a battery, and an electrical device. The negative electrode active material includes a carbon core; a porous carbon skeleton layer, having an accommodation space inside, where the carbon core is located in the accommodation space; a carbon cladding layer, where the carbon cladding layer is cladded on at least a part of an outer surface of the porous carbon skeleton layer; and a wave absorbing material and silicon-based particles, where the wave absorbing material and the silicon-based particles are respectively and independently distributed in a region in which the carbon core is located and a region in which the porous carbon skeleton layer is located.
Embodiments of the present application provides an electrode assembly and a manufacturing method thereof, a battery cell, a battery, and an electrical apparatus. The electrode assembly comprises: a first electrode plate; and at least two second electrode plates stacked and bent to form at least one bent portion, the bent portion comprising at least one bent section and at least two straight sections, two adjacent straight sections being connected through the bent section, where for each bent portion, the first electrode plate is provided between two adjacent straight sections, and the polarity of the first electrode plate is opposite to the polarity of the adjacent second electrode plate.
H01M 10/0583 - Construction or manufacture of accumulators with folded construction elements except wound ones, i.e. folded positive or negative electrodes or separators, e.g. with ‘’Z’’-shaped electrodes or separators
H01M 50/46 - Separators, membranes or diaphragms characterised by their combination with electrodes
89.
NEGATIVE CURRENT COLLECTOR AND PREPARATION METHOD THEREOF, NEGATIVE ELECTRODE PLATE, SECONDARY BATTERY, AND ELECTRICAL DEVICE
This application relates to a negative current collector. At least one surface of the negative current collector is overlaid with a LixM alloy layer, in which 0
An electrical apparatus, a battery, a battery cell and an electrode plate assembly are disclosed. The electrode plate assembly includes an electrode plate and an insulating adhesive tape. The electrode plate includes an electrode plate body and a tab. The main surface of the electrode plate body has a first side edge and a second side edge that are spaced apart from each other along a predetermined spacing direction. The tab is integrally formed with the electrode plate body and protrudes from the first side edge in the spacing direction. The insulating adhesive tape is to be adhered and fixed to the main surface of the electrode plate body and to cover the first side edge. The above method can solve the problem of short circuit caused by burrs generated during a tab forming process piercing the separator.
H01M 50/531 - Electrode connections inside a battery casing
H01M 50/586 - Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries inside the batteries, e.g. incorrect connections of electrodes
91.
PREPARATION METHOD FOR POSITIVE ELECTRODE SLURRY, SECONDARY BATTERY, BATTERY PACK AND ELECTRICAL APPARATUS
A method for preparing a positive electrode slurry includes four sequential stirring steps. A positive electrode active material and a conductive agent are first stirred to form a dry mixture. A binder and a solvent are then stirred to form a glue solution. The dry mixture and glue solution are subsequently stirred to form a primary slurry. Finally, the binder, the solvent, and the primary slurry are stirred to obtain the positive electrode slurry. The binder and solvent used in the second and fourth stirrings are the same. Based on the total mass of binder used in both steps, 50% to 70% is added during the second stirring, and 30% to 50% during the fourth stirring. The application also relates to a positive electrode slurry prepared by this method, a secondary battery including the slurry, a battery pack, and an electrical apparatus comprising the battery.
C09J 127/16 - Homopolymers or copolymers of vinylidene fluoride
H01M 4/131 - Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
H01M 10/054 - Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
92.
PEROVSKITE PRECURSOR MATERIAL AND PREPARATION METHOD, PEROVSKITE MATERIAL AND PREPARATION METHOD, PEROVSKITE THIN FILM, PEROVSKITE PRECURSOR SLURRY, PEROVSKITE SOLAR CELL AND PREPARATION METHOD, AND ELECTRIC DEVICE
Provided are a perovskite precursor and a preparation method, a perovskite material and a preparation method, a perovskite thin film, a perovskite precursor slurry, a perovskite solar cell and a preparation method, and an electric device. The perovskite precursor includes a precursor substrate and doping ions. The doping ions include at least one of alkali metal ions, alkaline earth metal ions, transition metal ions, group IIIA element ions, acid radical ions, and halogen ions. At least a part of the doping ions are embedded into a crystal lattice of the precursor substrate.
A composite positive electrode active material is disclosed. The composite positive electrode active material includes a first lithium iron manganese phosphate type material and a second lithium iron manganese phosphate type material. The first lithium iron manganese phosphate type material has a nanosheet structure, and a ratio of an area of a (010) crystal plane of the first lithium iron manganese phosphate type material to a total area of crystal planes of the first lithium iron manganese phosphate type material is A1%. The second lithium iron manganese phosphate type material has a spherical and/or quasi-spherical structure, and a ratio of an area of a (010) crystal plane of the second lithium iron manganese phosphate type material to a total area of crystal planes of the second lithium iron manganese phosphate type material is A2%. The composite positive electrode active material satisfies A1>A2.
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
H01M 4/02 - Electrodes composed of, or comprising, active material
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
94.
BATTERY, CHARGING DEVICE, CHARGING METHOD, BATTERY MANAGEMENT SYSTEM AND ELECTRIC APPARATUS
A battery, a charging device, a battery charging method, a battery management system and an electrical apparatus. The battery comprises: at least one battery cell, a positive electrode active material of the battery cell comprising LiMPO4, and M comprising Mn element and Fe element; and the battery management system, used for controlling the temperature of the battery in response to a charging instruction, such that the temperature of the battery during at least part of a charging process is within a preset temperature range.
H01M 10/633 - Control systems characterised by algorithms, flow charts, software details or the like
B60L 53/60 - Monitoring or controlling charging stations
B60L 58/12 - Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
H01M 10/637 - Control systems characterised by the use of reversible temperature-sensitive devices, e.g. NTC, PTC or bimetal devicesControl systems characterised by control of the internal current flowing through the cells, e.g. by switching
H01M 10/6568 - Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
95.
BATTERY MODULE, BATTERY, AND POWER CONSUMING DEVICE
A battery module includes a battery cell group, a bracket, a binding member, and an electrical connecting member. The battery cell group includes a plurality of battery cells arranged in a first direction. Each of the battery cells includes electrode terminals. The bracket is located on a side of the battery cell group on which the electrode terminals are arranged. A first groove extending in the first direction is provided in the bracket, and a length direction of the bracket is parallel to the first direction. The electrical connecting member is at least partially received in the first groove. First through holes are provided in a bottom wall of the first groove, and the binding member passes through the first through holes and binds and fixes the electrical connecting member to the bracket.
H01M 50/505 - Interconnectors for connecting terminals of adjacent batteriesInterconnectors for connecting cells outside a battery casing comprising a single busbar
B60L 50/64 - Constructional details of batteries specially adapted for electric vehicles
H01M 50/209 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
H01M 50/249 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders specially adapted for aircraft or vehicles, e.g. cars or trains
H01M 50/262 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders with fastening means, e.g. locks
H01M 50/271 - Lids or covers for the racks or secondary casings
H01M 50/298 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by the wiring of battery packs
H01M 50/55 - Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
A battery cell, a battery and an electric device are provided. The battery cell includes electrode assemblies, a shell, and a pressure relief mechanism. The shell is used to accommodate the electrode assemblies. The pressure relief mechanism is provided on a lower portion of the shell and integrally formed with the shell. During normal use of the battery cell, the pressure relief mechanism is located at the lower portion of the shell.
A secondary battery and an electric device comprising the secondary battery. The secondary battery comprises: a negative electrode sheet and an electrolyte, where the negative electrode sheet comprises a silicon-carbon composite material and the silicon-carbon composite material has a three-dimensional network crosslinked pore structure; and the electrolyte comprises a carboxylate compound.
Provided is a silicon-based negative electrode active material, including M2Si2O5 and M2SiO3, where M includes one or more alkali metal elements; in an XRD pattern of the silicon-based negative electrode active material, a diffraction angle 2θ has a first diffraction peak ranging from 24° to 25°, and a half-peak width of the first diffraction peak is βA; the diffraction angle 2θ has a second diffraction peak ranging from 26° to 27°, and a half-peak width of the second diffraction peak is βB; and the silicon-based negative electrode active material satisfies 1.0≤βA/βB≤2.5.
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
A current collector with a coating, a secondary battery, a battery module, a battery pack, and an electrical device are disclosed. The coating includes at least a surface modification layer. The coating is formed on at least one side of the current collector. A thickness of the surface modification layer is 100 nm to 10 μm. The coating formed on at least one side of the current collector can effectively block direct contact between a negative electrode metal and an electrolyte solution constituent, thereby reducing side reactions between the negative electrode metal and the electrolyte solution, significantly reducing gas generated by the battery during cycling, and improving the cycle performance and safety of the battery.
This application provides a separator, including a first base film and a second base film. A melting point of the second base film is higher than a melting point of the first base film. A thickness of the first base film is denoted as T1, a thickness of the second base film is denoted as T2, and a total thickness of the separator is denoted as T, where T1/T2≥1.02, and 0.3≤T1/T≤0.7. The setting of a thickness relationship between the first base film and the second base film as well as a melting point relationship between the first base film and the second base film can improve the heat resistance of batteries and also effectively improves the high-temperature cycling performance of the batteries.
H01M 50/489 - Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
H01M 50/403 - Manufacturing processes of separators, membranes or diaphragms
H01M 50/414 - Synthetic resins, e.g. .thermoplastics or thermosetting resins
patents
