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METHOD FOR MANUFACTURING SECONDARY BATTERY

Resumen de: EP4579858A1

The present disclosure relates to a method for manufacturing a secondary battery, and an electrode active material layer may be activated by spraying an aqueous solvent onto a surface of the electrode active material layer before laminating an electrode and a separator. Accordingly, it may be possible to improve the adhesion strength between the electrode and the separator and improve the capacity retention and rate characteristics, leading to longer life of the battery.

METHOD FOR MANUFACTURING POWER STORAGE MODULE, AND POWER STORAGE MODULE

Resumen de: EP4579831A1

A method for manufacturing a power storage module includes a first step of preparing a stack, a second step of installing a resin component having a hole portion into which the detection line is inserted in the stack so as to form a gap with a lead-out portion of the detection line in the sealing body while facing the lead-out portion, and inserting a portion of the detection line led out from the lead-out portion into the hole portion of the resin component, and a third step of forming a filling resin layer integrated with the sealing body by filling a space between the lead-out portion and the resin component with a resin by using a mold, and obtaining a power storage module including the stack, the resin component, and the filling resin layer.

LITHIUM SECONDARY BATTERY

Resumen de: EP4579801A1

The present invention relates to a lithium secondary battery wherein the lithium secondary battery of the present invention includes a negative electrode including a negative electrode composite layer including a negative electrode active material including (i) a first negative electrode active material and (ii) a second negative electrode active material, a negative electrode conductive material, and a negative electrode binder, a positive electrode including a positive electrode composite layer including a positive electrode active material, a positive electrode conductive material, and a positive electrode binder, and an electrolyte, and CFC defined by Equation 1 below is 0.38 to 1.962. CFC = 100×W_c - {(D₅₀, _a1× D₅₀, _a2×L×R_N/P×10¹⁰)/MW_C} all the variables being described herein.

BATTERY PACK CASE, BATTERY PACK AND ELECTRIC DEVICE

Resumen de: EP4579880A1

A battery pack case includes an accommodating space for accommodating a plurality of battery cells; a plurality of mutually independent first air passages are provided in the battery pack case, and the battery cells of a plurality of battery cell units (90) are suitable for communicating with the outside of the battery pack through separate first air passages. A battery pack includes a battery pack case and a plurality of battery cell units (90) wherein each battery cell of the plurality of battery cell units (90) communicates with the outside of the battery pack through a separate first air passage and a plurality of battery cell units (90) are provided in the accommodating space.

RECHARGEABLE BATTERY

Resumen de: EP4579935A1

A rechargeable battery includes an electrode assembly, a can accommodating the electrode assembly inside and including a terminal hole, a rivet terminal including a pillar part extending into the terminal hole and a head part coupled to the pillar part, and an insulator between the rivet terminal and the can. The insulator includes a middle part that surrounds the pillar part and extends into the terminal hole, an outer part contacting the head part and the outer surface of the can, and an inner part contacting the inner surface of the can. At least two of the middle part, the outer part, and the inner part include different insulating materials with different heat resistance temperatures.

BATTERY MODULE HAVING FIRE-RESISTANT COATING LAYER DELAMINATED TO OPEN VENTING HOLE

Resumen de: EP4579915A1

A battery module according to the present disclosure includes: a cell assembly including a plurality of battery cells stacked on each other; a module case configured to store the cell assembly in an inner space and having a venting hole formed thereon; and a cover member disposed on the outer surface of the module case so as to cover the venting hole and including a fire-resistant coating layer coated with a fire-resistant coating material that is detached by pressure of venting gas when the venting gas is generated inside the module case.

SEPARATOR, BATTERY CELL, BATTERY AND ELECTRIC DEVICE

Resumen de: EP4579921A1

This application provides a separator, a battery cell, a battery, and a power consuming apparatus. The separator includes a first porous substrate, a second porous substrate, and a first functional layer located between the first porous substrate and the second porous substrate. The first functional layer includes graphene oxide, and the first functional layer is provided with a through hole penetrating in a thickness direction of the first functional layer.

MATERIALS HANDLING VEHICLE

Resumen de: EP4578818A2

A materials handling vehicle including a battery receiving space (130), and a removable battery assembly (200), wherein: the removable battery assembly (200) includes lateral battery faces (202A), each including a longitudinal guide structure (204A); the battery receiving space (130) includes opposing guide blocks (160A, 160B), each arranged on opposite sides of the battery receiving space (130), and each including a securement portion (162B) and a replaceable portion (164B); the replaceable portion (164B) of each guide block (160A, 160B) including a friction-inducing surface (166B) and a guiding surface (168A, 168B); each friction-inducing surface (166B) facing an opposing one of the lateral battery faces (202A); and each guiding surface (168A, 168B) facing an opposing surface of the longitudinal guide structure (204A), with the removable battery assembly (200) seated in the battery receiving space (130).

PACK CASE

Resumen de: EP4579910A1

A pack case includes a lower housing forming an accommodation space, a lower reinforcement plate mounted in the accommodation space of the lower housing and configured to support at least one cell assembly, and an upper housing coupled to the lower housing to seal the accommodation space, wherein a mechanical strength of the lower housing is smaller than a mechanical strength of the lower reinforcement plate.

BATTERY CELL FOR SECONDARY BATTERY

Resumen de: EP4579833A1

The present invention relates to a battery for a secondary battery, and more particularly to a battery for a secondary battery comprising a compression pad inside a case.

POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Resumen de: EP4579808A1

Provided is a positive electrode active material which contributes to improvement in the charging and discharging efficiency of a nonaqueous electrolyte secondary battery. A positive electrode active material included in this nonaqueous electrolyte secondary battery contains a composite metal oxide containing at least one element selected from the group consisting of Li, B, Na, Mg, Al, Si, P, K, Ti, Mn, Fe, Co, Zr, Nb, Mo, Sn, W, and Bi. The composite metal oxide includes secondary particles formed by aggregating primary particles. In each of the secondary particles, the proportion of the primary particles having an aspect ratio of at least 2 is 35% or more with respect to the total number of the primary particles. A surface modification layer which contains Ca and/or Sr is present on the surfaces of the primary particles, including the surface of the secondary particle.

NEGATIVE ELECTRODE MATERIAL, SECONDARY BATTERY, AND ELECTRONIC APPARATUS

Resumen de: EP4579797A1

A negative electrode material is provided, including a carbon-based material. In a thermogravimetric test, the negative electrode material has an exothermic peak within a temperature range of 600°C to 800°C in an air atmosphere. The negative electrode material of this application has excellent kinetic performance, thereby effectively improving discharge rate performance of a secondary battery including the negative electrode material.

NEGATIVE ELECTRODE MATERIAL, SECONDARY BATTERY AND ELECTRONIC DEVICE

Resumen de: EP4579769A1

A negative electrode material is provided, containing a carbon-based material. In an X-ray diffraction pattern of the negative electrode material tested by X-ray diffractometry, a diffraction peak a is exhibited at a diffraction angle 2θ of 43° to 44°, a diffraction peak b is exhibited at a diffraction angle 2θ of 45° to 47°, an intensity of the diffraction peak a is Ia, and an intensity of the diffraction peak b is Ib, satisfying: Ia/Ib > 1. The negative electrode material of this application exhibits excellent kinetic performance, and therefore, can effectively reduce the internal resistance of a secondary battery containing the negative electrode material and enhance overall performance of the secondary battery. A secondary battery containing the negative electrode material is also provided.

ELECTROCHEMICAL APPARATUS AND ELECTRIC DEVICE

Resumen de: EP4579905A1

An electrochemical apparatus (100) includes a housing (10), a conductive member (20), an electrode assembly (30), and an insulating member (40). The housing (10) has a first wall (11), and the first wall (11) is provided with a first through hole (111). The conductive member (20) covers the first through hole (111). The electrode assembly (30) is accommodated in the housing (10) and is electrically connected to the conductive member (20). The insulating member (40) is arranged between the conductive member (20) and the first wall (11), the insulating member (40) has a second through hole (41), and along a first direction (X), at least a part of a projection of the conductive member (20) is located within both the first through hole (111) and a second through hole (41). A surface of the first wall (11) facing the conductive member (20) and/or a surface of the conductive member (20) facing the first wall (11) is provided with a convex portion (50).

ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE

Resumen de: EP4579768A1

This application provides an electrochemical apparatus and an electronic apparatus. With the use of the positive electrode current collector provided in this application, with an inactive material layer provided on a second surface of a single-sided region of the positive electrode current collector, and in conjunction with the electrolyte of this application, after the electrochemical apparatus has undergone charge-discharge cycles, the risks of abnormality in the positive electrode plate and lithium precipitation in the negative electrode plate are lowered, thereby lowering the risk of failure of the electrochemical apparatus during the charge-discharge cycles.

ANODE FORMATION IN METAL-AIR CELLS

Resumen de: WO2024042512A1

Metal-air cells, battery stacks, battery system and methods of forming the anodes within the metalair cells without dismantling the cell are provided. The anodes include metal mesh(es) as current collector(s) and concentrated slurry comprising metal granules suspended in electrolyte, in electrical contact with the current collector(s). The concentration of the slurry is carried out by circulating it through a cell space between cathode(s) and the metal mesh(es), which are configured to increase the concentration of the metal granules accumulating thereupon. The rise in required circulation pressure (or the corresponding time period and/or changes in conductivity related thereto) is used to indicate the completion of the anode formation process. One- and two- dimensional implementations of cells are provided, and discharging efficiency may be enhanced by circulating the electrolyte during discharging.

CYLINDRICAL BATTERY CELL AND CYLINDRICAL SECONDARY BATTERY

Resumen de: EP4579778A1

This application discloses a cylindrical cell and a cylindrical secondary battery, where the cylindrical cell includes a first electrode plate, a separator, and a second electrode plate. The first electrode plate includes a first current collector, the first current collector is provided with a first blank foil region along an axial direction of the cylindrical cell, and the first blank foil region has a first chamfer at a terminating end of a winding direction of the cylindrical cell; and/or the second electrode plate includes a second current collector, the second current collector is provided with a second blank foil region along an axial direction of the cylindrical cell, and the second blank foil region has a second chamfer at a terminating end of a winding direction of the cylindrical cell. In this application, lengths of a first distance and a second distance of the first chamfer and/or the second chamfer are controlled to be within appropriate ranges. This can avoid that a sharp corner at a terminating position after flattening is too large and thereby prevents the sharp corner from piercing through the insulating adhesive paper to cause short circuit with a housing, thereby helping improve the safety performance of the battery.

METHOD AND APPARATUS FOR CORRECTING CAPACITY OF BATTERY MODULE, AND COMPUTER DEVICE

Resumen de: EP4579256A1

A method and apparatus for correcting a capacity of a battery module and a computer device are provided. The method includes: obtaining a discharge voltage value of the battery module; determining the discharge voltage value as an initial voltage indicator if it is within a dynamic voltage range of fully discharging; obtaining an initial charging capacity corresponding to the initial voltage indicator; obtaining a charging voltage value; determining the charging voltage value as a final voltage indicator if it is within a dynamic voltage range of fully charging; obtaining a final charging capacity corresponding to the final voltage indicator; determining a total capacity based on the initial and final charging capacity; and correcting the capacity based on the total capacity to obtain a corrected capacity of the battery module. This method ensures the consistency of the capacity of each module in the system and improves the user experience.

COMPOSITE CURRENT COLLECTOR, POSITIVE ELECTRODE SHEET, ELECTROCHEMICAL DEVICE, AND ELECTRIC APPARATUS

Resumen de: EP4579821A1

This application provides a composite current collector, a positive electrode sheet, an electrochemical device, and an electric apparatus. The composite current collector includes a metal substrate layer and a functional layer located on a surface of the metal substrate layer; where the functional layer is analyzed using an energy dispersive spectrometer, and based on a total number of atoms of the C element, the O element, and a metal element in the functional layer, an atomic percentage of the C element in the functional layer is x, an atomic percentage of the O element in the functional layer is y, and an atomic percentage of the metal element in the functional layer is z, satisfying: 5%≤x≤25%, 10%≤y≤30%, and 55%≤z≤85%. The functional layer with specific element contents on the surface of the metal substrate layer, a coverage of a coating on a surface of the composite current collector can be effectively improved while electrical performance is ensured, thereby improving the safety of the electrochemical device.

BATTERY CELL, BATTERY AND ELECTRIC DEVICE

Resumen de: EP4579903A1

This application provides a battery cell, a battery, and an electrical device, and relates to the technical field of batteries. The battery cell includes a shell, an electrode terminal, and a first blocking piece. The electrode terminal is disposed on a wall portion of the shell. A sidewall of a receptacle of the electrode terminal includes a first weld face. The first blocking piece is at least partially accommodated in the receptacle. The first blocking piece includes a second weld face. A welding clearance is formed between the second weld face and the first weld face. The first blocking piece is welded to the electrode terminal to form a welding portion. The welding portion is at least partially located within the welding clearance. Because the welding portion does not exceed the first surface, the welding portion will not interfere with a busbar component when the busbar component is welded to the first surface, thereby forming a stable connection between the busbar component and the first surface, and improving the stability of electrical energy output by a battery containing the battery cell.

ENERGY STORAGE DEVICE AND ENERGY STORAGE SYSTEM

Resumen de: EP4579916A1

The present application provides an energy storage device and an energy storage system. The energy storage device includes a battery rack; a battery pack disposed on the battery rack, where each battery pack includes a housing and a pressure relief valve disposed on the housing, a side of the housing is disposed with a through hole; a gas collecting component including a ventilation pipe and a gas extracting apparatus, where the ventilation pipe is connected to the housing of each battery pack and covers the pressure relief valve, the gas extracting apparatus is configured to discharge gas discharged from the battery pack into the ventilation pipe after the pressure relief valve is opened.

BATTERY MODULE HAVING FLAME EMISSION BLOCKING UNIT AND BATTERY PACK INCLUDING SAME

Resumen de: EP4579920A1

A battery module according to the present disclosure may include: a module case; a plurality of battery cells accommodated inside the module case and arranged to be stacked in one direction; a bus-bar frame configured to support a bus-bar connected to electrode leads of the battery cells; and a flame emission blocking unit connected to the bus-bar frame and disposed on the plate surface of the bus-bar frame and the upper surface of the battery cells so as to block flame from being discharged to the front and rear surfaces of the battery cells, where the electrode leads are located, and/or the upper surface of the battery cells.

EXPLOSION-PROOF STRUCTURE AND BATTERY

Resumen de: EP4579897A1

An explosion-proof structure and a battery are provided. The explosion-proof structure includes a cover plate, and an explosion-proof groove is provided on the cover plate. The explosion-proof groove includes a first sub-groove and a second sub-groove, a projection of the first sub-groove and a projection of the second sub-groove on a side of the cover plate encloses a closed ring, and a thickness of the cover plate at the position where the first sub-groove is located is less than a thickness of the cover plate at the position where the second sub-groove is located. The present application improves the reliability of the cover plate and ensures the explosion-proof effect.

SEPARATOR FOR LITHIUM SECONDARY BATTERY AND METHOD OF MAKING SAME

Resumen de: EP4579923A1

A separator according to the present disclosure has an organic/inorganic composite porous coating layer on a surface of a polymer substrate, wherein the organic/inorganic composite porous coating layer includes a first region including a larger amount of inorganic particles and a second region including a smaller amount of inorganic particles so that heat resistance at the side of the battery is improved by the first region, thereby solving a short circuit problem caused by shrinkage at two ends of the separator.

SECONDARY BATTERY AND ELECTRICAL APPARATUS

Nº publicación: EP4579859A1 02/07/2025

Solicitante:

NINGDE AMPEREX TECHNOLOGY LTD [CN]
Ningde Amperex Technology Limited

Resumen de: EP4579859A1

A secondary battery and an electrical apparatus are provided. The secondary battery includes an electrode assembly (1) and an electrolyte. The electrode assembly (1) includes a positive electrode plate (2), a negative electrode plate (3), and a separator (4). The separator (4) includes a substrate layer (41) and a first adhesive layer (42). The substrate layer (41) includes a third surface (411) and a fourth surface (412) opposite each other. The third surface (411) faces the negative electrode plate (3). The first adhesive layer (42) is disposed on the third surface (411) and is of a striped structure. A part of the separator (4) extending beyond the negative electrode plate (3) is defined as a separator extension part (5). The first adhesive layer (42) is at least partially located on the separator extension part (5). A peel strength between the separator (4) and the first negative electrode material layer (32) is a N/m, and a peel strength between the first negative electrode material layer (32) and the negative electrode current collector (31) is b N/m, where 6.0≤a≤15.0, and a