Alerta

HEATING ELEMENT FOR CONTROLLING THE TEMPERATURE OF THROUGH-FLOWING LIQUID, AND LIQUID CIRCUIT WITH HEATING ELEMENT ARRANGED THEREIN

Resumen de: WO2025046132A1

A liquid circuit (22) for controlling the temperature of a liquid-cooled battery unit (16) of a driving and energy-supplying unit (10) of a vehicle drive (14) is disclosed. The liquid is circulated in the liquid circuit (22), and is fed through the liquid-cooled battery unit (16), by means of a pump (24). In a defined flow section (32) of the liquid circuit (22) there is at least one electrically operated heating element (28), which is provided with flow channels (54), the channel walls of which are formed as flat heating conductors (44). A heating element (28) for forming a flow section (32) for a liquid circuit (32) intended for thermal exchange with a drive battery (16) is also disclosed. The heating element (28) comprises at least one electrical heating conductor (44) and a carrier (46), on which the at least one electrical heating conductor (44) is disposed. The carrier (46) is a carrier layer or carrier film (48), which has been made into a wound and/or multiply folded, and therefore three-dimensional, structure, wherein a flow channel (54) or multiple flow channels (54) for liquid is/are provided between regions of the carrier layer or carrier film (48) that are at a distance from one another in the radial direction.

BATTERY HOUSING, BATTERY, AND BATTERY PACK

Resumen de: EP4773386A1

The present application provides a battery case, a battery, and a battery pack. The battery case includes a bottom plate and an enclosure plate, the enclosure plate and the bottom plate together define a receiving chamber with an opening, and the opening is disposed opposite to the bottom plate. The bottom plate has a center point and an explosion-proof score, the explosion-proof score has an inner edge closest to the center point and an outer edge farthest from the center point. A distance between the inner edge and the center point is greater than or equal to 1/2 of a radius of the bottom plate, and a distance between the outer edge and the center point is less than or equal to 4/5 of the radius of the bottom plate.

BATTERY THERMAL RUNAWAY EARLY-WARNING METHOD AND APPARATUS, ELECTRONIC DEVICE, AND STORAGE MEDIUM

Resumen de: EP4773329A1

The present application provides a battery thermal runaway warning method and apparatus, an electronic device and a storage medium. With the method, electrical performance data sequences of a battery to be detected are obtained, filtering and detection processing is performed on the electrical performance data sequences to obtain filtered electrical performance data, it is determined whether the battery meets a preset alarm condition based on the filtered electrical performance data, and a warning signal is output when the battery meets the preset alarm condition, thereby improving the accuracy and effectiveness of the warning of thermal runaway of the battery.

POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR, POSITIVE ELECTRODE SHEET, AND BATTERY

Resumen de: EP4773238A1

The present application provides a positive electrode material, a method for preparing the same, a positive electrode plate, and a battery. The positive electrode material includes a positive electrode active material, which includes a ternary single-crystal material and lithium manganese iron phosphate. The crystal of the ternary single-crystal material has a lattice spacing satisfying the equation of a₁=b₁, where the lattice spacing a₁ ranges from 2.7 Å to 3.0 Å, and the lattice spacing c₁ ranges from 13.5 Å to 15.0 Å. The crystal of lithium manganese iron phosphate has a lattice spacing satisfying the equation of a₂=b₂, where the lattice spacing a₂ ranges from 6.1 Å to 6.4 Å, and the lattice spacing c₂ ranges from 4.6 Å to 5.0 Å.

BATTERY CELL, BATTERY, AND ELECTRICAL DEVICE

Resumen de: EP4773416A1

0001 The present application discloses a battery cell (12), a battery (100), and an electric device, pertaining to the field of battery technology. The battery cell (12) includes a housing (121), an electrode terminal (123), and a fixing member (125). The housing (121) includes a first wall (128), and the first wall (128) is provided with a first through hole (1281). The electrode terminal (123) includes a main body (1231) and a step portion (1232), where at least a portion of the main body (1231) passes through the first through hole (1281), the step portion (1232) and the main body (1231) are integrally formed, the step portion (1232) protrudes from a peripheral surface of the main body (1231), and the step portion (1232) is located on an outer side of the first wall (128). The fixing member (125) is made of a metal material. The fixing member (125) is provided with a second through hole (1251) for the main body (1231) to pass through. In a thickness direction of the first wall (128), at least a portion of the fixing member (125) is located between the first wall (128) and the step portion (1232) and abuts against the step portion (1232). In the thickness direction of the first wall (128), the main body (1231) has a first end surface facing away from an interior of the housing (121), the fixing member (125) has a second end surface facing away from the first wall (128), and the first end surface extends beyond the second end surface. The energy density of the battery (10

SOLID ELECTROLYTE MEMBRANE AND ALL-SOLID-STATE BATTERY COMPRISING SAME

Resumen de: EP4773287A1

0001 Disclosed are a solid electrolyte membrane comprising: a solid electrolyte; and a block copolymer comprising a unit structure derived from an aromatic vinyl monomer and a unit structure derived from a conjugated diene-based monomer, and an all-solid-state battery comprising the same.

SECONDARY BATTERY AND ELECTRONIC DEVICE

Resumen de: EP4773326A1

0001 A secondary battery and an electronic apparatus are provided. The secondary battery includes a housing made of a metal material, a wound electrode assembly, a first tab, and a first layer. The housing includes a first wall and a first conductive member provided on the first wall. The first tab includes a first extension section, a second extension section, and a third extension section. The first extension section includes a first end connected to a first electrode plate, and the first extension section extends from the first end toward a first side in a thickness direction of the electrode assembly and is inclined with respect to the thickness direction. The second extension section includes a second end connected to the first extension section. Viewed along a third direction, the second extension section extends from the second end toward the first side and is inclined with respect to the thickness direction. The third extension section is electrically connected to the first conductive member and includes a third end connected to the second extension section. A distance between the third end and the first wall is greater than a distance between the second end and the first wall. The first layer is provided on a surface of the second extension section facing the electrode assembly and extends to the first extension section and the third extension section. The reliability can be improved, and the service life can be prolonged.

BATTERY CELL, TERMINAL DEVICE, AND BATTERY CELL PACKAGING METHOD

Resumen de: EP4773357A1

A battery cell, an electronic device, and a battery cell packaging method are provided. The battery cell includes an electrode assembly, a tab, and a packaging pouch. The tab is connected to one side of the electrode assembly along a first direction. The packaging pouch includes a main portion and a sealing portion. The electrode assembly is disposed in the main portion. The main portion includes a top wall as well as a first wall and a second wall that are connected to two sides of the top wall respectively along a second direction. The sealing portion includes a top seal edge and a side seal edge. The tab extends out from the top seal edge. The side seal edge is connected to the first wall. The packaging pouch is formed by folding and hermetically securing a packaging film along the second wall. Along the second direction, a spacing between the electrode assembly and the first wall is W1, and a spacing between the electrode assembly and the second wall is W2, |W1 - W2| ≤ 30 µm. The third direction is a thickness direction of the electrode assembly. The first direction, the second direction, and the third direction are perpendicular to each other. The battery cell can improve safety performance.

TERMINAL POST, TERMINAL ASSEMBLY AND BATTERY

Resumen de: EP4773418A1

0001 The present application provides a pole, a terminal assembly, and a battery cell. The pole includes: a base (1) including a first surface (11); and a cylindrical body (2) disposed on the first surface (11). The cylindrical body (2) includes a second surface (23) away from the base (1), the second surface (23) is provided with a heat conduction groove (3), and the heat conduction groove (3) is filled with a heat conduction material (4).

SECONDARY BATTERY AND ELECTRONIC DEVICE

Resumen de: EP4773410A1

0001 A secondary battery and an electronic device are provided. The secondary battery includes an electrode assembly, a housing and a first tab assembly. The electrode assembly includes first electrode plates, second electrode plates, and separators. The electrode assembly is formed by stacking the first electrode plates, the separators and the second electrode plates along a first direction. The first direction is a thickness direction of the electrode assembly. The electrode assembly includes a plurality of sequentially connected side faces, one of which is a first side face and another is a second side face. The electrode assembly is accommodated in the housing. The first tab assembly includes a plurality of first tabs and a second tab. The plurality of first tabs extend out of the first side face, the plurality of first tabs are respectively connected to the first electrode plates, and the plurality of first tabs are electrically connected to each other and accommodated in the housing. The second tab extends out of the second side face along a second direction, one end of the second tab is connected to one first electrode plate, and the other end of the second tab extends out of the housing. The above secondary battery is conducive to improving the energy density.

BATTERY CELL, COVER PLATE ASSEMBLY, BATTERY, AND ELECTRICAL DEVICE

Resumen de: EP4773268A1

0001 Embodiments of the present disclosure provide a battery cell, a cover plate assembly, a battery, and an electrical device. The battery cell includes a housing and an electrode assembly; the housing is provided with a mounting cavity, and the electrode assembly is arranged in the mounting cavity; an avoidance area is arranged on a first wall of the housing; the side of the avoidance area facing the electrode assembly is recessed to form an avoidance slot, and the side of the avoidance area away from the electrode assembly protrudes out to form a protrusion; and a part of the electrode assembly extends into the avoidance slot.

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.

METHOD FOR RECOVERING CAPACITY OF AN ELECTROCHEMICAL ENERGY STORAGE DEVICE, AND CORRESPONDING DEVICE AND COMPUTER PROGRAM

Resumen de: WO2025045846A1

Disclosed is a method for recovering capacity of an electrochemical energy storage device, comprising alternating steps of: a. fully charging (S1) the device to a maximum charge voltage (Umax); b. relaxing (S2) the device for a period TREL; the alternating steps being repeated during a period of unavailability TIND of the electrochemical device and carried out at a cycling current CCyc less than or equal to the maximum current supported by the electrochemical device in normal operation.

CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, METHOD FOR MANUFACTURING SAME AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Resumen de: EP4773223A1

0001 The positive electrode active material for a lithium secondary battery according to the present invention includes a lithium metal oxide in a single-particle form and a coating layer located on a surface of the lithium metal oxide, and the coating layer may include Al and W.

NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Resumen de: EP4773321A1

0001 The present invention provides a nonaqueous electrolyte secondary battery in which electrode plate deformation near a winding start end part of a positive electrode caused by charge/discharge cycles can be suppressed. 0002 Disclosed is a nonaqueous electrolyte secondary battery in which a negative electrode (12) that constitutes a wound electrode body has a negative electrode mixture layer (32). The negative electrode mixture layer (32) has: a non-facing part (12a) that is disposed on the inner end side in the winding direction of the electrode body and does not face a positive electrode (11) with a separator interposed therebetween; and a facing part (12b) that is disposed on the outer side, in the winding direction, from the outer end in the winding direction of the non-facing part (12a) and that faces the positive electrode (11) with the separator interposed therebetween. The length of the non-facing part (12a) in the winding direction is not less than 0.3 turns. The inner circumferential surface of the negative electrode mixture layer (32) is provided with a recess (33) that straddles the boundary between the non-facing part (12a) and the facing part (12b), and the length of the recess (33) in the winding direction from the boundary to the outer end in the winding direction of the recess 33 is less than one turn.

NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

Resumen de: EP4773319A1

0001 The positive electrode active material contains a lithium-containing composite oxide; the negative electrode active material contains a silicon-containing material; the discharge capacity per 1.0 g of the negative electrode mixture layer (52) is 0.5 Ah or more; and the thickness of the negative electrode mixture layer (52) is 85 µm or less. The positive electrode (11) has one or more double-sided positive electrode current collector exposed parts (45a, 45b), and the negative electrode (12) has one or more double-sided negative electrode current collector exposed parts (55a). The one or more double-sided positive electrode current collector exposed parts (45a, 45b) include one or more lead fixing exposed parts (45a), and a negative electrode lead (21) is fixed to the double-sided negative electrode current collector exposed part (55a). The double-sided negative electrode current collector exposed part (55a) faces double-sided positive electrode current collector exposed parts (45a, 45b) through an interposed separator (13), and at least a part of a positive electrode lead (20) is fixed in a location that overlaps in the height direction with the negative electrode lead facing position in the positive electrode (11) that the negative electrode lead (21) faces via the interposed separator (13).

BATTERY CELL, BATTERY AND ELECTRICAL APPARATUS

Resumen de: EP4773396A1

Disclosed in the present application are a battery cell, a battery and an electrical apparatus. The battery cell comprises a casing; at least one electrode component, the electrode component being arranged inside the casing; and at least one elastic buffer pad, the elastic buffer pad being arranged on at least part of the surface of the electrode component and/or inside the electrode component, the compression ratio of the elastic buffer pad in the thickness direction satisfying the following relationship: -5% ≤ P ≤ 5%, the compression ratio of the elastic buffer pad under the pressure of 0.1 MPa being ≤ 20%, and the compression ratio thereof under the pressure of 0.5 MPa being ≤ 60%, or P > 5%, and the compression ratio of the elastic buffer pad under the pressure of 0.5 MPa being ≥ 50%, the at least one electrode component and the at least one elastic buffer pad being stacked in a first direction, and P being a ratio of a difference between the total distance of the electrode component in a fully-charged state and the total distance thereof in a fully-discharged state to the distance between the inner wall surfaces of the casing in the first direction.

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 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.

LITHIUM-ION BATTERY HAVING BINDER-FREE ANODE

Resumen de: WO2025049747A1

The present invention relates to a lithium-ion battery (LiB) having a binder-free anode comprising an active material and about 1-5% by weight of single wall carbon nanotubes (SWCNT) as a conductive additive, wherein the SWCNT has an inorganic impurity content of less than 10% by weight. The LiB of the present invention having a binder-free anode, provides higher capacity than a LiB having an anode that contains a polymeric binder.

LITHIUM SECONDARY BATTERY

Resumen de: EP4773322A1

0001 A lithium secondary battery includes an electrode group including a positive electrode, a negative electrode at which Li deposits during charging, and a separator, which are wound together. The separator includes a first separator (second separator) disposed on the inner layer side (outer layer side) of the positive electrode. The first separator (second separator) includes a first substrate (second substrate), and a first protruding portion (second protruding portion). The positive electrode has a region PL at the Lth layer from a winding-start end portion of the positive electrode. The ratio of an area ALt (BLt) of a portion overlapping the first protruding portion (second protruding portion) in a region S1L (S2L) in the first substrate (second substrate) facing the inner layer side (outer layer side) of the region PL, to an area AL (BL) of the region S1L (S2L) is denoted by XL (YL). The values of the XL (YL) corresponding to the regions P1 to Pn where L = 1 to n (n is an integer of 3 or more) are represented by X1 to Xn (Y1 to Yn), the X1 (Y1) is smaller than at least one of the X2 to Xn (Y2 to Yn).

SECONDARY BATTERY AND BATTERY PACK COMPRISING SAME

Resumen de: EP4773411A1

0001 The present disclosure relates to a secondary battery and a battery pack including the same, and the secondary battery according to an aspect of the present disclosure includes an electrode assembly including a plurality of electrodes and a separator stacked on each other; an electrode tab extending from the electrode; a case accommodating the electrode assembly and having a window in an outer surface; and an electrode lead disposed in the case, wherein at least a part of the electrode lead is exposed through the window to conduct electricity from the electrode assembly to outside, and the electrode lead may include a lead portion extending in a stack direction of the plurality of electrodes at one side of the electrode assembly; and a coupling portion extending from the lead portion and to which the electrode tab is coupled.

POSITIVE ELECTRODE SLURRY COMPOSITION, POSITIVE ELECTRODE, AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Resumen de: EP4773252A1

0001 The present disclosure relates to a positive electrode slurry composition, a positive electrode, and a lithium secondary battery including the same, and particularly to a positive electrode slurry composition for a lithium secondary battery which includes a positive electrode active material, a film-forming additive, and a solvent, wherein the film-forming additive is a compound represented by Formula 1, a positive electrode for a lithium secondary battery, and a lithium secondary battery including the same.

ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE COMPRISING SAME

Nº publicación: EP4773284A1 08/07/2026

Solicitante:

NINGDE AMPEREX TECHNOLOGY LTD [CN]
Ningde Amperex Technology Limited

Resumen de: EP4773284A1

0001 This application provides an electrochemical device and an electronic device containing same. The electrochemical device includes a positive electrode plate. The positive electrode plate includes a current collector and a positive electrode material layer located on at least one surface of the current collector in a thickness direction of the current collector. The positive electrode material layer includes a first positive electrode material layer and a second positive electrode material layer. The second positive electrode material layer is located between the first positive electrode material layer and the current collector. The positive electrode material layer includes a positive active material. The positive active material includes two or more lithium nickel cobalt manganese oxide ternary materials. The two or more lithium nickel cobalt manganese oxide ternary materials are divided into two groups, with a first group of lithium nickel cobalt manganese oxide ternary materials being represented by a chemical formula LiNiCoMnM1O<2>, satisfying x1 + y1 + z1 + m1 = 1 and 0.15 ≤ y1 ≤ 0.60, with a second group of lithium nickel cobalt manganese oxide ternary materials being represented by a chemical formula LiNiCoMnM2O<2>, satisfying x2 + y2 + z2 + m2 = 1 and 0 < y2 ≤ 0.14. The two groups of lithium nickel cobalt manganese oxide ternary materials are located in the first positive electrode material layer and the second pos