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ELECTRODE ASSEMBLY, BATTERY CELL, BATTERY AND ELECTRIC DEVICE

Resumen de: EP4579860A1

Some embodiments of this application provide an electrode assembly (10), a battery cell, a battery, and an electrical device. The electrode assembly (10) includes at least one first electrode plate (1), where the first electrode plate (1) is bent and includes: a current collector (11); and an active material layer (12), disposed on the current collector (11). The active material layer (12) includes a material-removed region (13) in at least a part of bends of the first electrode plate. The material-removed region (13) extends along a width direction (W) of the first electrode plate (1). A depth of the material-removed region (13) does not exceed a thickness of the active material layer (12) at which the material-removed region is located.

METHOD FOR MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL

Resumen de: EP4579773A1

The present disclosure has an object to provide a method for manufacturing a positive electrode active material in which performance degradations of a capacity characteristic and an output characteristic are suppressed. The herein disclosed method for manufacturing the positive electrode active material includes a preparation step for preparing an end material of a positive electrode plate containing a positive electrode active material that has never been performing intercalation and deintercalation of a charge carrier, an alkaline liquid immersing step for immersing the end material into an alkaline liquid, a solid-liquid separation step for performing a solid-liquid separation on the alkaline liquid after the alkaline liquid immersing step so as to collect the solid substance, a classifying step for classifying the collected solid substance into a fine particle fraction and a coarse particle fraction, and a baking step for baking the coarse particle fraction.

BATTERY CELL, BATTERY AND ELECTRIC DEVICE

Resumen de: EP4579924A1

A battery cell (20), a battery (100), and an electrical device are disclosed. The battery cell (20) includes: a shell (23), an electrode assembly (25), an electrode terminal (216), and a current collecting component (211). The shell (23) is configured to accommodate the electrode assembly (25). The electrode assembly (25) includes a tab (251). The electrode terminal (216) is disposed on the shell (23). The current collecting component (211) includes a tab connecting portion (2111) and a terminal connecting portion (2113). The tab connecting portion (2111) is configured to be connected to the tab (251). The terminal connecting portion (2113) is configured to be connected to the electrode terminal (216). The terminal connecting portion (2113) includes a plurality of terminal connecting sub-portions (21137) stacked in layers. Each terminal connecting sub-portion (21137) includes a riveting sub-portion (21151). Any two adjacent riveting sub-portions (21151) are fixed together by riveting.

BATTERY CELL, BATTERY, AND ELECTRICAL DEVICE

Resumen de: EP4579940A1

The present application relates to the technical field of batteries, and provides a battery cell, a battery, and an electrical device. The battery cell comprises a casing, an electrode terminal, an electrode assembly, a support frame, and an electrolyte retention layer. The casing is provided with a wall part, and the electrode terminal is arranged on the wall part. The electrode assembly is accommodated in the casing, the electrode assembly is provided with a main body part and a tab, and in the thickness direction of the wall part, the tab protrudes out of the end of the main body part facing the wall part and is connected to the electrode terminal. The support frame is arranged between the wall part and the main body part in the thickness direction of the wall part, and the support frame is configured to support the main body part. The electrolyte retention layer is arranged on the support frame, and the electrolyte retention layer is configured to absorb and store an electrolyte in the casing. The electrolyte located at the bottom of the casing can be absorbed and stored by means of the electrolyte retention layer, so that the phenomenon that the electrolyte flows out of the casing when the bottom of the battery cell is damaged due to impact can be relieved, thereby reducing the risk of use of the battery cell caused by electrolyte leakage, and thus the safety of use of the battery cell can be improved.

BATTERY PACK AND POWERED DEVICE

Resumen de: EP4579884A1

The invention provides a battery pack and a powered device. The battery pack includes a box, a cell, a liquid cooling plate attached to the cell, a liquid inlet pipe, and a liquid outlet pipe. A bottom guard plate is disposed at the bottom of the box. The cell and the liquid cooling plate are both disposed in the box. A liquid inlet nozzle and a liquid outlet nozzle are disposed in the liquid cooling plate and penetrate the bottom guard plate to the outside of the box. The liquid inlet pipe and the liquid outlet pipe are disposed outside the box. A first quick connector is disposed in the liquid inlet pipe. A second quick connector is disposed in the liquid outlet pipe. The first quick connector is connected to the liquid inlet nozzle. The second quick connector is connected to the liquid outlet nozzle.

BATTERY CELL, BATTERY, AND ELECTRONIC DEVICE

Resumen de: EP4579862A1

This application discloses a battery cell, a battery (1), and an electric apparatus. The battery cell includes at least one electrode assembly (10). The electrode assembly (10) includes a positive electrode plate (11), a negative electrode plate (12), a separator (13), and a porous insulation layer (14). The positive electrode plate (11), the separator (13), and the negative electrode plate (12) are stacked and wound. At least a portion of the porous insulation layer (14) is disposed in a bent region (16) of the electrode assembly (10), and the porous insulation layer (14) is disposed between the positive electrode plate (11) and the separator (13) or disposed between the negative electrode plate (12) and the separator (13). Based on the above structure, the service life of the battery cell can correspondingly be prolonged, and the safety of the battery cell can correspondingly be improved.

POROUS CARBON-AG COMPOSITE, ANODE CONTAINING SAME, AND LITHIUM ION SECONDARY BATTERY INCLUDING SAME ANODE

Resumen de: EP4578825A1

The present invention provides a porous carbon-Ag composite comprising macro porous carbon particles and Ag particles inserted into pores of the carbon, a negative electrode comprising the composite, and a lithium-ion secondary battery comprising the negative electrode.

ANODE, AND LITHIUM ION SECONDARY BATTERY COMPRISING ANODE

Resumen de: EP4579800A1

The present invention provides a negative electrode comprising a current collector and an active material layer, wherein the active material layer comprises carbon material particles and metal oxide particles, and a lithium-ion secondary battery comprising the negative electrode.

NEGATIVE ELECTRODE MATERIAL, NEGATIVE ELECTRODE PLATE, ELECTRODE ASSEMBLY, BATTERY, AND ELECTRIC DEVICE

Resumen de: EP4579806A1

A negative electrode material, a negative electrode plate (101), an electrode assembly (20), a battery (40), and an electrical device (50) are disclosed. The negative electrode material includes a silicon-based material. The silicon-based material includes a porous silicon-based material and a micropowder silicon-based material configured to fill voids between particles of the porous silicon-based material. A volume median diameter of the porous silicon-based material is greater than a volume median diameter of the micropowder silicon-based material. The small-grained micropowder silicon-based material fills the voids between particles of the large-grained porous silicon-based material. The stress generated by the two types of silicon-based materials during intercalation and deintercalation of lithium is relieved by a pore channel structure in the porous silicon-based material and by an interstice between the porous silicon-based material and the micropowder silicon-based material, thereby limiting the expansion of the two types of silicon-based materials to the interior of the two types of silicon-based materials, and reducing the expansion rate of the negative electrode material.

ELECTROLYTE FOR SODIUM SECONDARY BATTERY, SODIUM SECONDARY BATTERY, AND ELECTRIC DEVICE

Resumen de: EP4579855A1

This application provides an electrolyte for a sodium secondary battery, a sodium secondary battery, and an electric device. An electrolyte for a sodium secondary battery is provided, where the electrolyte includes an additive, and the additive includes a sulfate ester compound or a sulfonate ester compound. In this application, through the addition of an additive, including a sulfate ester compound or a sulfonate ester compound, in the electrolyte, the high-temperature cycling performance of the battery can be improved, the high-temperature gas generation phenomenon of the battery can be alleviated, and the electrochemical performance and safety performance of the battery can be improved.

ELECTROLYTE FOR SODIUM SECONDARY BATTERY, SODIUM SECONDARY BATTERY, AND ELECTRICAL APPARATUS

Resumen de: EP4579854A1

This application provides an electrolyte for a sodium secondary battery, a sodium secondary battery, and an electrical apparatus. An electrolyte for a sodium secondary battery is provided, where the electrolyte includes an additive, and the additive includes a fluorinated ether compound. In this application, through the addition of an additive, including a fluorinated ether compound, in the electrolyte, the high-temperature cycling performance of the battery can be improved, the high-temperature gas generation phenomenon of the battery can be alleviated, and the electrochemical performance and safety performance of the battery can be improved.

LITHIUM SECONDARY BATTERY

Resumen de: EP4579799A1

The present invention relates to a lithium secondary battery comprising: an electrode assembly comprising a positive electrode comprising a positive electrode active material, a negative electrode comprising a negative electrode active material, and a separator disposed between the positive electrode and the negative electrode; an electrolyte; and a battery case accommodating the electrode assembly and the electrolyte, wherein the positive electrode active material comprises a first lithium nickel-based oxide having at least one of a single particle type composed of one nodule and a pseudo-single particle type which is an aggregate of 30 or less nodules, in 50 wt% or more on the basis of the total weight of the positive electrode active material, and the negative electrode active material is composed of a Si/C composite and a carbon-based negative electrode active material.

APPARATUS FOR DETECTING DEFECTS OF BATTERY CELL AND METHOD FOR DETECTING DEFECTS OF BATTERY CELL

Resumen de: EP4579869A1

An apparatus for detecting defects of a battery cell according to an embodiment of the present disclosure includes: a magnetic field measuring section that measures the magnetic field generated by the current flowing through the battery cell; a support section that supports the magnetic field measuring section; and a mounting section on which the battery cell is placed, wherein the magnetic field measuring section comprises a first measuring member that scans one side of the battery cell, a second measuring member that scans the other side of the battery cell opposite to the one side, and a third measuring member that is coupled between the first measuring member and the second measuring member, and wherein the first measuring member, the second measuring member, and the third measuring member are integrated.

POWER STORAGE DEVICE AND METHOD OF MANUFACTURING THE POWER STORAGE DEVICE

Resumen de: EP4579890A1

A power storage device (1) includes a safety valve (30) in a case member (21) made of metal. The case member (21) has a valve periphery roughened portion (24) around the safety valve on a case inner surface (23). The power storage device (1) includes a blockage preventing resin protrusion (40) that is a protrusion made of resin and protruding to the inside (EH). The blockage preventing resin protrusion (40) is joined to the valve periphery roughened portion (24) and reduces the possibility of a piece of the electrode body (50) blocking the safety valve (30). Nanocolumns (26) stand numerously on the valve periphery roughened portion (24), and the blockage preventing resin protrusion (40) is joined to the valve periphery roughened portion (24) such that a resin material (45) fills gaps between the nanocolumns (26) standing numerously.

ELECTROLYTE FOR SODIUM SECONDARY BATTERY, SODIUM SECONDARY BATTERY, AND ELECTRICAL DEVICE

Resumen de: EP4579857A1

An electrolyte for a sodium secondary battery, a sodium secondary battery, a battery module, and an electrical device. The electrolyte for the sodium secondary battery comprises a sodium salt, an ether solvent, and a fluoroether solvent. The electrolyte contains ether solvent molecules and fluoroether solvent molecules that form a co-solvated structure with sodium ions, so that the chemical and electrochemical stability of the ether solvent is improved, and the cycle performance, storage performance and safety of the fluoroether solvent are improved.

BATTERY DIAGNOSIS APPARATUS AND METHOD

Resumen de: EP4579261A1

An apparatus for diagnosing a battery according to an embodiment of the present disclosure includes a storage unit configured to store a plurality of battery profiles that correspond to a plurality of cycles and represent the corresponding relationship between voltage and capacity of a battery; and a control unit configured to generate a plurality of correction profiles representing the corresponding relationship between voltage and capacity change amount based on the plurality of battery profiles, calculate a normalization value for the generated plurality of correction profiles, and diagnose a state of the battery based on the calculated plurality of normalization values and a preset reference value.

ELECTROLYTE, ELECTROCHEMICAL DEVICE, AND ELECTRONIC DEVICE

Resumen de: EP4579849A1

This application provides an electrolyte, an electrochemical device and an electronic device. The electrolyte includes a compound of Formula I and an additive B, and the additive B includes at least one of LiPF₂O₂, lithium bis(oxalato)borate, lithium difluoro(oxalato) borate, lithium bis(fluorosulfonyl)imide or lithium bis(trifluoromethanesulfonyl)imide.The electrolyte of this application can improve the high-temperature cycle performance, storage performance and safety performance of the electrochemical device.

ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE

Resumen de: EP4579848A1

An electrochemical device includes a negative electrode plate and an electrolyte, where the negative electrode plate includes a negative electrode active material layer, and the negative electrode active material layer includes a silicon-based material; and the electrolyte includes a compound of formula (I), where in formula (I), X is selected from an oxygen atom or N-R₈.

BATTERY MODULE AND METHOD FOR MANUFACTURING BATTERY MODULE

Resumen de: EP4579832A1

Disclosed herein are a battery module including a busbar assembly including a busbar, a support film supporting the busbar, and a support plate supporting the support film, and a method for manufacturing the same. Specifically, the battery module includes: a plurality of battery cells arranged in a first direction and each including a cell case and a cell terminal protruding from the cell case; and a busbar assembly including a busbar allowing electrical connection between respective cell terminals of at least one pair of battery cells among the plurality of battery cells, a support film coupled to the busbar to support the busbar, and a support plate coupled to the support film to support the support film.

CURABLE ELECTRICAL INSULATION TAPE

Resumen de: EP4578921A1

A curable adhesive tape comprising a tapelike backing provided on at least one side with an adhesive layer which consists of a curable adhesive, wherein the backing is colored blue provides for a highly suitable application of radiation energy and corresponding heat input into the curable adhesive, which results in very good adhesive and joining properties, very high bonding strength of the curable adhesive and an optimal wetting of a substrate by the adhesive. Such a curable adhesive tape is particularly suitable for electrical insulation, especially for encasing a battery cell. Preferably the blue color fulfils the following definition: L*a*b* color space: L* = 0 to 93, a* = -33 to 24 and b* = -60 to 0.

ENERGY STORAGE SYSTEM AND HEATING CONTROL METHOD FOR BATTERY PACK

Resumen de: EP4579980A1

This application provides an energy storage system and a heating control method for a battery pack. The energy storage system includes one or more battery packs and a controller. The battery pack includes an electrochemical cell, a heating film, a first switching transistor, and a first drive circuit. The heating film is configured to heat the electrochemical cell. The heating film and the first switching transistor are connected in series, and then connected in parallel between a positive direct current bus and a negative direct current bus. The first drive circuit is configured to output a pulse signal, to drive the first switching transistor to be turned on and turned off. The controller is configured to: if a voltage between the positive direct current bus and the negative direct current bus is greater than a voltage threshold, reduce a duty cycle of the pulse signal, to reduce operating power of the heating film; or if a voltage between the positive direct current bus and the negative direct current bus is less than or equal to a voltage threshold, increase a duty cycle of the pulse signal, to increase operating power of the heating film. According to the solution of this application, excessively high operating power of the heating film can be avoided, so that a risk of damage to the heating film can be reduced.

NEGATIVE ELECTRODE FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME

Resumen de: EP4579789A1

A negative electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same are disclosed. The negative electrode for a rechargeable lithium battery includes a negative electrode active material layer including: an agglomerated product where at least one, e.g., two or more porous conductive material particle have pores are agglomerated, wherein pores of the adjacent porous conductive material particles in the agglomerated product are interconnected with each other.

CATHODE SHEET, ANODE SHEET, BATTERY CELL, BATTERY, AND ELECTRICAL DEVICE

Resumen de: EP4579931A1

The present application provides a positive electrode plate, a negative electrode plate, a battery cell, a battery, and an electric apparatus. An electrode plate includes a current collector and an active material layer, where the current collector includes a body portion and a tab. A ratio of the product of a cross-sectional area of a root of each tab and the current collector to a length between central axes of two adjacent tabs to the product of a width of the active material layer and a mass per unit area of the active material layer satisfies that a design factor of a positive tab is at least 0.1 and a design factor of a negative tab is at least 0.02. In the present application, size specifications of each tab and the design of a distance between adjacent tabs are adjusted according to the design parameter of each tab, ensuring that the battery cell has a current carrying capability matching with the volumetric energy density on the premise of increasing the volumetric energy density of the battery cell, thereby ensuring that a local temperature rise of the corresponding battery cell in a fixed charging process does not exceed a threshold.

CYLINDRICAL SECONDARY BATTERY

Resumen de: EP4579900A2

A cylindrical secondary battery (1) including an electrode assembly (200), a can (100) accommodating the electrode assembly (200), a cap assembly (400) electrically coupled to the electrode assembly (200) and coupled to one side of the can (100) to close an inlet of the can (100), and including a cap-up (410) exposed to the outside, and a gasket (500) between the cap assembly (400) and the can (100). The cap-up (410) may include a terminal portion (411) with a circular shape, a base portion (412) spaced apart from the terminal portion (411) and surrounding an outer side of the terminal portion (411), and bridge parts (420, 421, 422) configured to connect the terminal portion (411) to the base portion (412) and spaced apart from each other with a connection hole (430, 431, 432) therebetween. A width of a part of each of the bridge parts (420, 421, 422) connected to the terminal portion (411) may be less than a width of a part of each of the bridge parts (420, 421, 422) connected to the base portion (412).

BATTERY CELL, BATTERY AND ELECTRIC DEVICE

Nº publicación: EP4579823A1 02/07/2025

Solicitante:

CONTEMPORARY AMPEREX TECHNOLOGY CO LTD [CN]
Contemporary Amperex Technology Co., Limited

Resumen de: EP4579823A1

The present application relates to the field of batteries, and provides a battery cell, a battery and an electric device. The battery cell comprises an electrode assembly, a casing and an insulator. The casing is used for accommodating the electrode assembly, and has a wall portion arranged opposite the electrode assembly in a first direction, the wall portion being provided with a first pressure-relief area. In the first direction, the insulator is at least partially arranged between the electrode assembly and the wall portion to insulate the electrode assembly from the wall portion. The insulator is provided with a second pressure-relief area corresponding to the first pressure-relief area, and the first pressure-relief area and the second pressure-relief area are configured to be open when the battery cell releases pressure. When the battery cell is in normal use, the second pressure-relief area separates the electrode assembly from the first pressure-relief area, and an electrolyte in the casing is less prone to scouring the first pressure-relief area and thereby influencing the explosion-initiating pressure of the first pressure-relief area. When the battery cell releases pressure, the second pressure-relief area is open to allow gas to pass through the insulator to release pressure via the first pressure-relief area, which has relatively high safety.