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NAIL PENETRATION TEST DEVICE

Resumen de: EP4772898A1

Disclosed is a nail penetration test device (100), which can improve the performance of nail penetration tests. The device (100) includes: a voltage acquisition module (130), including a first connection port and a second connection port, where the first connection port is connected to a nail, and the second connection port is connected to a first electrode terminal of a battery cell (20); and a nail mechanism (120), configured to control the nail to move toward the battery cell (20), where the voltage acquisition module (130) is configured to detect a voltage between the nail and the first electrode terminal during the movement of the nail toward the battery cell (20), and the voltage is used to determine an initial penetration position of the nail on the battery cell (20).

SECONDARY BATTERY AND ELECTRONIC DEVICE

Resumen de: EP4773341A1

This application provides a secondary battery and an electronic apparatus. A negative electrode material layer of the secondary battery includes a first negative electrode material layer and a second negative electrode material layer that are stacked, where the second negative electrode material layer is located between the first negative electrode material layer and a negative electrode current collector, a thickness of the first negative electrode material layer is H₁ µm, and a thickness of the second negative electrode material layer being H₂ µm, where 20≤H₁≤40, and 60≤H₂≤90; and D_v50 of a first negative electrode active material in the first negative electrode material layer is greater than D_v50 of a second negative electrode active material in the second negative electrode material layer. An electrolyte includes lithium difluorophosphate and a propionate compound, where the propionate compound includes propyl propionate; and based on a mass of the electrolyte, a mass percentage of the lithium difluorophosphate is W₁%, and a mass percentage of the propyl propionate is W₂%, where 0.1≤W₁≤1, 10≤W₂≤60, and 4≤W₁×H₁≤35. The secondary battery of this application has good kinetic performance and high-temperature float charging performance.

BATTERY CELL AND ELECTRIC DEVICE COMPRISING SAME

Resumen de: EP4773241A1

A battery cell and an electric device comprising same. The battery cell comprises an electrode assembly, which comprises a positive electrode sheet and a separator, wherein the positive electrode sheet comprises a positive electrode current collector and a positive electrode membrane layer arranged on at least one surface of the positive electrode current collector, the positive electrode membrane layer comprises a positive electrode active material, the positive electrode active material comprises a layered lithium-containing transition metal oxide, and the volume distribution particle size Dv50 of the positive electrode active material is smaller than or equal to 6.5 µm; and the separator comprises a porous substrate and a porous coating arranged on at least one surface of the porous substrate, and the porous coating comprises a fiber material and a granular filler. The electric device can make a battery have a high energy density, good low-temperature power performance and cycling performance.

LITHIUM MANGANESE IRON PHOSPHATE MATERIAL AND PREPARATION METHOD THEREFOR, POSITIVE ELECTRODE SHEET AND PREPARATION METHOD THEREFOR, AND BATTERY

Resumen de: EP4773242A1

A lithium manganese iron phosphate material and a preparation method thereof, a positive electrode sheet and a preparation method thereof, and a battery are provided. The lithium manganese iron phosphate material is LiFe_xMn_yA_(1-x-y)PO₄, where 0 < x < 1 , 0 < y < 1, 0 ≤ 1 - x-y ≤ 0.2, and the doping element A is selected from at least one of Be, Ca, Mg, Ba and Sr; the lithium manganese iron phosphate material has the surface basicity value of 10~150 µmol/g.

BATTERY MODULE

Resumen de: GB2633029A

A battery module 7 comprising n cells including a first cell, wherein n is a non-zero positive integer. For each cell the battery module comprises a first switching element 91 coupled to a positive terminal of the cell, and a second switching element 92 coupled to a negative terminal of the cell, the first and second switching elements being coupled. The battery module further comprises a first inductor 101 coupled to the first and second switching elements corresponding to the first cell, a third switching element 93 coupled between the first inductor and a positive terminal of the battery module, the coupling between the first inductor and the third switching element forming a first node, a fourth switching element 94 coupled between the first node and a negative terminal of the battery module, wherein the coupling between the fourth switching element and the negative terminal of the battery module forms a second node, and the second switching element corresponding to the nth cell and the negative terminal of the nth cell are jointly coupled to the second node, and a capacitor 13 coupled between the negative and positive terminals of the battery module.

DISPERSIONS OF CARBON NANOTUBES AND CARBON BLACKS

Resumen de: EP4517851A1

0001 The present invention relates to conductive dispersions possessing advantageous properties comprising carbon black and carbon nanotube particles with carefully selected properties, such as surface area, oil absorption number (OAN), ration of cOAN/OAN, number of primary particles per aggregate, D<50> length, or outside diameter. Optimized dispersions according to the invention are characterized by improved stability and suitable rheological properties and enable the formation of improved Li-lon batteries

ENERGY STORAGE APPARATUS AND ENERGY STORAGE VALVE TOWER

Resumen de: EP4773462A1

0001 The present application provides an energy storage device (100) and an energy storage valve tower (1000). The energy storage device (100) includes an electrical cabinet module (10), a power module (20), and a bus module (30). The power module (20) and the bus module (30) are detachably connected to an electrical cabinet frame (11) of the electrical cabinet module (10). The energy storage device (100) provided in embodiments of the present application allows the power module (20) and the bus module (30) to be removed from the electrical cabinet frame (11) of the electrical cabinet module (10) when transportation is required, enabling separate packaging and transportation of the power module (20), bus module (30), and electrical cabinet module (10). As compared to integral transportation, the power module (20), bus module (30), and electrical cabinet module (10) as separate modules are lighter in weight than the complete energy storage device (100) and can be transported separately, thereby effectively improving transportation convenience.

TEST APPARATUS AND CHARGING SYSTEM

Resumen de: EP4772892A1

0001 This disclosure relates to the technical field of charge and discharge tests, and in particular to a testing apparatus and a charging system. The testing apparatus is configured to perform a charge and discharge test on a first energy storage and charging device and a second energy storage and charging device, where the first energy storage and charging device has a first charging interface, and the second energy storage and charging device has a second charging interface. The testing apparatus includes a connecting unit configured to connect power interfaces in the first charging interface and the second charging interface, so as to electrically connect the first energy storage and charging device and the second energy storage and charging device; and a test control unit configured to connect to signal interfaces in the first charging interface and the second charging interface to separately communicate with the first energy storage and charging device and the second energy storage and charging device, so as to control the first energy storage and charging device and the second energy storage and charging device for the charge and discharge test. Thus, the testing apparatus electrically connects the two energy storage and charging devices and communicates with the two energy storage and charging devices to control the two energy storage and charging devices for charge and discharge, thus implementing a bidirectional charge and discharge test on the two energy storage

BATTERY CELL, BATTERY, AND ELECTRIC DEVICE

Resumen de: EP4773365A1

0001 A battery cell (20), a battery (100), and an electric device. The battery cell (20) comprises a casing (210), an electrode assembly (220), electrode terminals (230), and sealing members (240). The casing (210) comprises a first wall (211); through holes (2111) are formed in the first wall (211); the electrode assembly (220) is arranged in the casing (210); the first wall (211) is used for supporting the electrode assembly (220), each electrode terminal (230) is arranged at a corresponding through hole (2111); the electrode terminal (230) comprises a first conductive portion (231); the first conductive portion (231) is arranged on the side of the first wall (211) facing an accommodating space; and each sealing member (240) is arranged between a corresponding electrode terminal (230) and the first wall (211). When the outside of the casing (210) is stressed, the first wall (211) and the electrode terminals (230) can deform together, so that it is not easy to form gaps between the sealing members (240), which are located between the electrode terminals (230) and the first wall (211), and the first wall (211), and between the sealing members (240) and the electrode terminals (230), thereby maintaining good sealing performance between the sealing members (240) and the first wall (211) and between the sealing members (240) and the electrode terminals (230) and reducing the possibility of liquid leakage of the battery cell (20), and thus reducing the possibility of failure o

VEHICLE INTEGRATED DOMAIN CONTROLLER ARCHITECTURE, VEHICLE MANAGEMENT SYSTEM AND VEHICLE

Resumen de: EP4772384A1

0001 A vehicle integrated domain controller architecture (800), a vehicle management system, and a vehicle are disclosed. The vehicle integrated domain controller architecture (800) includes: a low-voltage battery (300), a battery management module (100), a low-voltage power distribution module (200), and a thermal management module (900), where the low-voltage battery is electrically connected to the low-voltage power distribution module; the low-voltage power distribution module is configured with a low-voltage load access terminal (210) configured to connect to a low-voltage load; the thermal management module is configured with a thermal management load access terminal (910) configured to connect to a thermal management load; and the battery management module, and the low-voltage power distribution module, and the thermal management module share the same controller. By integrating in the controller a function of managing the low-voltage battery and a function of managing the thermal management load and the low-voltage load, the control lines are simplified.

METHOD FOR MANUFACTURING A BATTERY CELL USING COMPRESSIVE FORCES

Resumen de: WO2025045820A1

A method for manufacturing a battery cell is performed during one or more manufacturing stages comprising at least one of: a dry stack time interval, electrolyte introduction, soaking, and precharge. The method comprises: providing a substantially rigid cell can (102) having a cell stack (302) disposed therein, the cell stack comprising a plurality of sheetlike cell layers arranged in a stack-like or roll configuration; and applying a supplemental, actively controllable compressive force to the cell stack (302) directly or indirectly by one or more inner walls of the cell can (102), wherein the supplemental compressive force is applied in addition to any forces resulting from electrolyte introduction into the cell can (102), and the supplemental compressive force is applied in a uniaxial direction that is substantially normal to the sheetlike cell layers, causing the sheetlike cell layers to have a denser configuration in the uniaxial direction compared to when no supplemental compressive force is applied.

BATTERY CELL, BATTERY APPARATUS AND ELECTRIC DEVICE

Resumen de: EP4773405A1

0001 A battery cell (100) includes an electrode core (2) with a plurality of electrode plates (21). Two ends of the electrode plate (21) are respectively provided with a tab (22) and a slitting edge (23). The plurality of electrode plates (21) include first electrode plates (211) and second electrode plates (212) having opposite polarities. Tabs (22) having opposite polarities are located on different sides of the electrode core (2). Tabs (22) located on a same side are electrically connected to a first connection surface (31) of a connection member (3) by using a transition piece (6). A spacing between the first connection surface (31) and the slitting edges (23) is L, a quantity of electrode plates (21) with same polarity is n, a quantity of bent layers of the tabs (22) is m and a thickness is t, a quantity of bent layers of the transition piece (6) is m1 and an overall thickness is t1, a thickness of the battery cell (100) is T, and the following is satisfied: 0.5≤N=(L-5-0.1*T/2)/(n*m*t+m1*t1)≤15.

GAP FILLER COMPOSITION AND BATTERY PACK

Resumen de: EP4773347A1

0001 A gap filler composition according to embodiments of the present invention comprises: a siloxane-based resin; a filler including thermally conductive inorganic particles and hollow particles; a catalyst; and an amino-silicone-based dispersant. A gap filler composition is provided that maintains thermal conductivity by utilizing an amino-silicone-based dispersant and hollow particles and has low specific gravity and improved viscosity stability. A battery pack utilizing the gap filler composition is provided.

BATTERY, BATTERY MODULE, AND ELECTRIC APPARATUS

Resumen de: EP4773419A1

0001 A battery, a battery module, and an electrical device are provided by the invention. The battery includes a casing, a cover plate, an electrode assembly, a terminal, and tabs. The cover plate covers the casing to define an accommodating cavity. The electrode assembly is disposed inside the accommodating cavity. The terminal is disposed on the cover plate and located on a side of the cover plate away from the accommodating cavity. The terminal is provided with a mounting groove communicated with the accommodating cavity. Each of the tabs is disposed in the mounting groove and is electrically connected to an inner wall of the mounting groove. The electrode assembly extends to a groove opening of the mounting groove and is connected to the tabs.

SILICON-BASED COMPOSITE MATERIAL AND PREPARATION METHOD THEREFOR, AND NEGATIVE ELECTRODE

Resumen de: EP4773224A1

Provided are a silicon-based composite material and a preparation method therefor, and a anode. The silicon-based composite material includes a porous matrix, silicon nanoparticles, and heteroatoms, wherein the porous matrix is provided with three-dimensional intersecting pore channels having multi-level pore sizes; each pore channel contains at least one silicon nanoparticle; and the heteroatoms at least partially cover the surface of the silicon nanoparticles, and/or the heteroatoms are spaced between the silicon nanoparticles. The heteroatoms separate and constrain the silicon nanoparticles, such that the silicon nanoparticles are uniformly dispersed in the three-dimensional intersecting pore channels of the porous matrix, thereby effectively alleviating the volume effect of silicon during charge-discharge cycles, avoiding structural collapse of the composite material, and improving the cycling stability of the electrode.

A THERMAL MANAGEMENT SYSTEM FOR AN ENERGY STORAGE UNIT AND A METHOD THEREOF

Resumen de: WO2025046596A1

The present subject matter relates in general to an energy storage unit (102). More particularly but not exclusively the present subject matter relates to a thermal management system (100) for the energy storage unit (102) and a method (300) thereof. The thermal management system (100) comprises a control unit in communication with a heat exchanger (106) and one or more pumping units (108). The control unit is configured to control one or more flow characteristics of the thermal medium, where the plurality of cells (202) of the energy storage unit (102) is immersed in the thermal medium. The control unit additionally control one or more cell parameters of the plurality of cells (202). The thermal management system (100) and method (300) is configured to actively thermally regulate the plurality of cells (202) of the energy storage unit (102).

BATTERY PACK, USE OF ADHESIVE SHEET, AND RECYCLING METHOD

Resumen de: EP4773346A1

Disclosed is a battery pack including a resin housing that stores a battery cell, a metal plate installed in the resin housing, and an adhesive sheet that bonds the resin housing and the metal plate. The adhesive sheet contains an easy-to-dismantle adhesive material. It is possible to provide a battery pack including an adhesive sheet that has good adhesiveness between a resin battery case (housing) and a cooling plate (metal plate) at the time of use, and allows the metal plate to be easily peeled off from the housing at the time of disassembly.

BATTERY CELL, BATTERY APPARATUS, AND ELECTRIC DEVICE

Resumen de: EP4773406A1

A battery cell (100), including a jelly roll (2) that includes a plurality of electrode plates (21). A tab (22) and a cut edge (23) are provided at two ends of each electrode plate (21), respectively; the plurality of electrode plates (21) are classified into first electrode plates (211) and second electrode plates (212) which are arranged in sequence and have opposite polarities; the tabs (22) having opposite polarities are located on different sides of the jelly roll (2); the tabs (22) located on the same side are electrically connected to a first connecting surface (31) of a connector (3); and on the same side of the jelly roll (2), the distance between the first connecting surface (31) and the cut edge (23) is L, the number of electrode plates (21) having the same polarity is n, the number of bending layers of the tabs (22) is m, the thickness of the battery cell (100) is T, and the thickness of each electrode plate (21) is t, satisfying: 0.5≤N= (L-5-0.1*T/2)/(n*m*t)≤15.

BATTERY, BATTERY MANAGEMENT SYSTEM, AND ELECTRIC DEVICE

Resumen de: EP4773333A1

0001 A battery (100), a battery management system (400), and an electric device (500). The battery (100) comprises: a case (10); a liquid leakage detection member (20), the liquid leakage detection member (20) being arranged in the case (1) to detect liquid in the case (10), and the liquid leakage detection member (20) being adapted to be communicationally connected to a control device (200) so that the control device (200) controls an alarm device (300) to operate; and a liquid drainage member (30), the liquid drainage member (30) being arranged in the case (10), and the liquid drainage member (30) being fixedly arranged on the bottom wall (11) of the case (10).

BATTERY AND ELECTRIC DEVICE

Resumen de: EP4773354A1

A battery (100) and an electric device. The battery (100) comprises battery cells (10) and a separation component (30). Each battery cell (10) has a casing (11). In a first direction (x), the separation component (30) is arranged on one side of a battery cell (10), and the separation component (30) is used for separating the battery cell (10) from another component adjacent to the battery cell (10). In the first direction (x), the casing (11) has a first wall (12) facing the separation component (30). The first wall (12) has a first body portion (120) and a first thickened portion (121) arranged in a second direction (z), wherein the thickness of the first thickened portion (121) is greater than the thickness of the first body portion (120), and the first direction (x) and the second direction (z) are perpendicular to each other. In the second direction (z), the first thickened portion is located on one side of the separation component (30); and in the first direction (x), the first thickened portion (121) protrudes towards the separation component (30) relative to the first body portion (120) and is used for limiting the displacement of the separation component (30) in the second direction (z). Thus, the reliability of the battery can be improved.

SOLVENT EXTRACTION METHOD FOR SELECTIVELY EXTRACTING COBALT

Resumen de: EP4772658A1

A solvent extraction method for selectively extracting cobalt from a leachate containing at least the cobalt and nickel, the leachate being obtained by subjecting a lithium-ion battery waste to hydrometallurgical processing, the method comprising: a step A of adding a halide salt having an amine chelate skeleton to the leachate; and a step B of selectively extracting the cobalt from the leachate by using neodecanoic acid as an extractant.

TERNARY POSITIVE ELECTRODE MATERIAL PRECURSOR, PREPARATION METHOD THEREFOR AND USE THEREOF

Resumen de: EP4772476A1

The present disclosure provides a ternary positive electrode material precursor, a preparation method therefor, and use thereof. The alkali content of the reaction system is precisely controlled by balancing the flow rates of the metal salt solution and the nitrogen gas, so as to ensure that needle-shaped primary particles are formed and to control the growth orientation of crystal planes of a crystal, so that the crystal planes grow in a certain orientation. On different crystal planes, by controlling the flow rate of the metal salt solution, the growth units are allowed to continuously diffuse to the crystal surface then embed into the crystal lattice from desired sites of the surface, thus keeping the ratio of the grain sizes in the range mentioned above. The method can precisely control the ratio of the grain sizes of the ternary positive electrode material precursor. The ternary positive electrode material can follow the orientation of the crystal plane of the precursor, thereby optimizing the orientation of the crystal plane of the ternary positive electrode material, which can facilitate the lithium ions deintercalation. Thereby cycle performances of the positive electrode material can be improved.

BATTERY AND ELECTRIC DEVICE

Resumen de: EP4773401A1

Provided are a battery (100) and an electric device. The battery (100) includes an insulation board (20), a circuit board (30), and a battery cell (10). The circuit board (30) is disposed on the insulation board (20). In a thickness direction (X) of the insulation board (20), the battery cell (10) is disposed on a side of the insulation board (20). An end of the battery cell (10) facing the insulation board (20) is provided with an electrode terminal (11). A busbar (40) is disposed on the insulation board (20); the busbar (40) includes a first connection layer (41), a second connection layer (42), and a first bent layer (43) connecting the first connection layer (41) and the second connection layer (42); the first connection layer (41) includes a main body region (411) and a connection region (412); the main body region (411) and the second connection layer (42) overlap in the thickness direction (X); the connection region (412) and the second connection layer (42) do not overlap in the thickness direction (X); the connection region (412) is connected to at least one of the electrode terminal (11), the insulation board (20), and the circuit board (30).

BATTERY PACK AND USE OF ADHESIVE SHEET

Resumen de: EP4773345A1

A battery pack including a battery cell, a cooling plate, a battery case that houses the battery cell and the cooling plate, and an adhesive sheet that bonds the battery cell and the cooling plate. The adhesive sheet has a thermal diffusivity reduction rate represented by Formula (1) of 4.5% or more before and after heating when heated at 285°C for 5 minutes. ((thermal diffusivity before heating - thermal diffusivity after heating)/thermal diffusivity before heating) × 100 (1) The present invention can provide a battery pack including an adhesive sheet having good thermal conductivity at normal times and excellent thermal insulating properties at the time of thermal runaway, which are conflicting properties.

SYSTEM FOR REDUCING BATTERY CELL FAILURE PROPAGATION RISK OF A RECHARGEABLE BATTERY

Nº publicación: EP4771700A1 08/07/2026

Solicitante:

EAGLEPICHER TECHNOLOGIES LLC [US]
Eaglepicher Technologies, LLC

Resumen de: WO2025049863A1

Aspects of the present disclosure include systems, apparatuses, or methods for a system for reducing battery cell failure propagation risk includes a rechargeable battery including a plurality of rechargeable cells connected in series, parallel, or a combination of series and parallel and a BMS coupled with the batter-. The BMS includes a processor and a memory including computer-executable instructions to receive information indicative of a status of each of the rechargeable cells: determine that a particular rechargeable cell is likely in a failure condition; identify a group of rechargeable cells that is in within one hop of tire rechargeable cell that is likely in the failure condition; couple the group of rechargeable cells to a discharging system without coupling the rechargeable cell in the failure condition to the discharging system; and discharge the group of rechargeable cells to a target SOC.