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Publicaciones de los últimos 15 días/Last 15 days publications (excluidas pubs. CN y JP /CN and JP pubs. excluded)
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A BATTERY CELL STACK ASSEMBLY, A BATTERY PACK , A BATTERY MODULE, A VEHICLE, AND A METHOD

Publication No.:  EP4664603A1 17/12/2025
Applicant: 
VOLVO TRUCK CORP [SE]
VOLVO TRUCK CORPORATION
EP_4664603_PA

Absstract of: EP4664603A1

A battery cell stack assembly (1) for a battery module or a battery pack, the battery cell stack assembly having a longitudinal extension along a longitudinal direction, a width extension along a width direction (W) and a height extension along a height direction (H), the battery cell stack assembly comprising:- a plurality of prismatic battery cells (2), stacked next to each other in at least three longitudinally extending and parallel battery cell rows (R1, R2, R3),- a bottom support plate (3), wherein the at least three battery cell rows (R1, R2, R3) are supported on a support surface of the bottom support plate which faces upwardly in the height direction (H),- a first cooling plate (4), provided in a first longitudinally extending space (S1) in-between two adjacent battery cell rows (R1, R2) of the at least three battery cell rows (R1, R2, R3), and extending in the longitudinal direction and the height direction (H) such that it forms an intermediate wall between the two adjacent battery cell rows (R1, R2),- a first alignment element (32), provided in the first longitudinally extending space (S1) and below the first cooling plate, as seen in the height direction (H), wherein the first alignment element has an extension in the longitudinal direction corresponding to at least a portion of an extension of the first longitudinally extending space (S1) and is configured to align the two adjacent battery cell rows (R1, R2) with respect to the longitudinal direction (L), and- w

BATTERY CELL, BATTERY, AND ELECTRIC APPARATUS

Publication No.:  EP4664581A1 17/12/2025
Applicant: 
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD [CN]
Contemporary Amperex Technology Co., Limited
EP_4664581_PA

Absstract of: EP4664581A1

Provided in the present application are a battery cell, a battery, and an electrical apparatus. The battery cell comprises an electrode assembly which comprises an electrode plate and a separator. The electrode plate comprises a current collector and a film layer which is disposed on at least one surface of the current collector and contains an active material and a liquid absorption polymer, and the electrode plate satisfies: v/λ≥1.2, wherein v represents the liquid absorption rate of the film layer and has a unit of mg/s, and λ represents the porosity of the film layer. The separator comprises a liquid-retaining polymer, and the separator satisfies: (m2-M)/(m1-M) ≥ 25%, wherein M represents the mass of the separator before the separator absorbs an electrolyte solution, and has a unit of g; m1 represents the mass of the separator weighed at ambient pressure after the separator is soaked in the electrolyte solution for 2 h, and has a unit of g; and m2 represents the mass of the separator weighed at a pressure of 10000 N at ambient pressure after the separator is soaked in the electrolyte solution for 2 h, and has a unit of g.

SEPARATOR, BATTERY CELL, BATTERY, AND ELECTRIC DEVICE

Publication No.:  EP4664652A1 17/12/2025
Applicant: 
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD [CN]
Contemporary Amperex Technology Co., Limited
EP_4664652_PA

Absstract of: EP4664652A1

The present application provides a separator, a battery cell, a battery, and an electrical apparatus. The separator comprises a separator body and a polymer layer provided on at least one surface of the separator body. The separator satisfies: v/λ>5.00, wherein λ represents the porosity of the separator, v represents the liquid absorption rate of the separator, and the unit of the liquid absorption rate is mg/s.

SEPARATOR, BATTERY CELL, BATTERY, AND ELECTRIC DEVICE

Publication No.:  EP4664651A1 17/12/2025
Applicant: 
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD [CN]
Contemporary Amperex Technology Co., Limited
EP_4664651_PA

Absstract of: EP4664651A1

A separator, a battery cell (5), a battery, and an electric device (6). The separator comprises a liquid retention polymer, and the separator satisfies the following formula: (m2-M)/(m1-M)≥25%, wherein M represents the mass of the electrolyte not absorbed by the separator, and the unit thereof is g; m1 represents the mass of the separator weighed under an ambient pressure after having been immersed in the electrolyte for 2 h, and the unit thereof is g; and m2 represents the mass of the separator weighed under a pressure of 10,000 N in the ambient pressure after having been immersed in the electrolyte for 2 h, and the unit thereof is g.

BATTERY CELL, BATTERY, AND ELECTRICAL APPARATUS

Publication No.:  EP4664571A1 17/12/2025
Applicant: 
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD [CN]
Contemporary Amperex Technology Co., Limited
EP_4664571_PA

Absstract of: EP4664571A1

The present application provides a battery cell, a battery, and an electrical apparatus; the battery cell comprises an electrode assembly and an electrolyte; the electrode assembly comprises a first electrode plate, a second electrode plate, and a separator; the polarities of the first electrode plate and the second electrode plate are opposite; the separator is arranged between the first electrode plate and the second electrode plate; at least one of the first electrode plate, the second electrode plate, and the separator comprises a lyophilic polymer; and the battery cell satisfies the following formula (I): 0.01%≤yM−M′≤15%

BATTERY

Publication No.:  EP4664604A1 17/12/2025
Applicant: 
JIANGSU ZENERGY BATTERY TECH GROUP CO LTD [CN]
Jiangsu Zenergy Battery Technologies Group Co., Ltd
EP_4664604_PA

Absstract of: EP4664604A1

The present application relates to the field of energy storage devices, and discloses a battery, including battery cells, first heat exchange plates and insulating and heat conducting layers, wherein the battery cell is provided with an electrode column, and the electrode column has a heat exchange surface; the insulating and heat conducting layer is disposed between the heat exchange surface and the first heat exchange plate; and the insulating and heat conducting layer has a first side surface and a second side surface that are opposite to each other, the first side surface is attached to the first heat exchange plate, and the second side surface is attached to the heat exchange surface or a metal part connected to the electrode column. The present application effectively improves the heat dissipation effect of the battery.

DRYING METHOD FOR LITHIUM ION BATTERY, AND LITHIUM BATTERY

Publication No.:  EP4664044A1 17/12/2025
Applicant: 
EVE POWER CO LTD [CN]
Eve Power Co., Ltd
EP_4664044_A1

Absstract of: EP4664044A1

A drying method for a lithium battery and a lithium battery are provided, including: step 1: placing a cell to be dried in an oven; Step 2: performing the following drying processes for a plurality of rounds: adjusting a temperature and a vacuum level in the oven, where the temperature and vacuum level are readjusted in the oven when performing the drying processes for a next time, and compared to the drying processes in a previous time, the temperature in the oven is decreased in a stepwise manner, and the vacuum level in the oven is increased in a stepwise manner; and step 3: performing a moisture test on the cell to be dried.

BATTERY PACK

Publication No.:  EP4664626A1 17/12/2025
Applicant: 
LG ENERGY SOLUTION LTD [KR]
LG Energy Solution, Ltd
EP_4664626_PA

Absstract of: EP4664626A1

A battery pack having a pack case including a lower case and an upper case that define an inner space, a plurality of battery cells in the inner space, a separation sheet between a bottom of the pack case and the plurality of battery cells, and a thermally conductive resin layer between the separation sheet and the plurality of battery cells, in which the separation sheet is coupled to the thermally conductive resin layer, and a first adhesive strength per unit area between the separation sheet and the thermally conductive resin layer is lower than a second adhesive strength per unit area between the pack case and the thermally conductive resin layer.

ELECTROLYTE SOLUTION, BATTERY CELL, BATTERY, AND ELECTRIC DEVICE

Publication No.:  EP4664591A1 17/12/2025
Applicant: 
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD [CN]
Contemporary Amperex Technology Co., Limited
EP_4664591_PA

Absstract of: EP4664591A1

Provided in this application are an electrolyte solution, a battery cell, a battery, and a power consuming apparatus. The electrolyte solution includes a first anion represented by Formula (I), where X, a, b, R<sup>1</sup>, and R<sup>2</sup> are respectively as defined herein.

SECONDARY BATTERY AND ELECTRICAL DEVICE

Publication No.:  EP4664561A1 17/12/2025
Applicant: 
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD [CN]
Contemporary Amperex Technology Co., Limited
EP_4664561_PA

Absstract of: EP4664561A1

The present application provides a secondary battery and an electrical device. The secondary battery comprises: a positive electrode sheet, wherein the positive electrode sheet comprises a positive electrode film layer, the positive electrode film layer comprises a positive electrode active material containing transition metal elements, based on the total molar number of the transition metal elements in the positive electrode active material, the molar content of nickel element is not lower than 85%, and the energy per unit area of the positive electrode film layer on a single side of the positive electrode sheet is 15-35 mWh/cm<sup>2</sup>, optionally 20-35 mWh/cm<sup>2</sup>; and a negative electrode sheet, wherein the negative electrode sheet comprises a negative electrode film layer, the negative electrode film layer comprises a negative electrode active material containing a carbon-silicon composite material, and the carbon-silicon composite material comprises carbon matrix particles having a carbon skeleton and silicon nanoparticles attached to the carbon skeleton. According to the secondary battery, the energy density of the secondary battery is improved by means of the matching design of a positive electrode active material and a negative electrode active material.

CATHODE ACTIVE MATERIAL, AND CATHODE AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Publication No.:  EP4664558A1 17/12/2025
Applicant: 
LG CHEMICAL LTD [KR]
LG CHEM, LTD
EP_4664558_PA

Absstract of: EP4664558A1

The present invention relates to a cathode active material, and a cathode and a lithium secondary battery, comprising same and, particularly, to a cathode active material, and a cathode and a lithium secondary battery, comprising same, the cathode active material comprising a lithium transition metal oxide having a single crystallization degree (X) of 0.50 to 0.75 according to formula 1, wherein the lithium transition metal oxide is in the form of a single particle. In formula 1, a<sub>i</sub> represents a value (A<sub>i/</sub>A) of the cross-sectional area (A<sub>i</sub>) of the ith crystalline particle relative to the single particle cross-sectional area (A) when the single particle consists of i crystalline particles.

ELECTROLYTE AND ELECTROCHEMICAL DEVICE

Publication No.:  EP4664590A1 17/12/2025
Applicant: 
NINGDE AMPEREX TECHNOLOGY LTD [CN]
Ningde Amperex Technology Limited
EP_4664590_PA

Absstract of: EP4664590A1

This application relates to an electrolyte and an electrochemical device. Specifically, this application provides an electrolyte including a compound of Formula I-A and a compound of Formula I-B:andwhere based on a mass of the electrolyte,a percentage of the compound of Formula I-A and a percentage of the compound of Formula I-B are each in a range of 0.12% to 5.1%. The electrolyte of this application is conducive to improving the high-temperature storage performance, safety performance, and low-temperature discharge performance of the electrochemical device.

ELECTROCHEMICAL CELL COMPRISING A SEPARATOR ATTACHED TO AN ELECTRODE

Publication No.:  EP4664650A1 17/12/2025
Applicant: 
SAFT GROUPE [FR]
Saft Groupe
EP_4664650_PA

Absstract of: EP4664650A1

The electrochemical cell (10) comprises at least an electrochemical set (12) comprising:- a first electrode (14) having a first polarity and a second electrode (16) having a second polarity opposed to the first polarity;- a separator (17) interposed between the first electrode (14) and the second electrode (16) and comprising at least a bar (40) made up of a separator material;The at least one bar (40) is attached to the first electrode (14) and/or to the second electrode (16).

ELECTRODE FOR A BATTERY

Publication No.:  EP4662717A2 17/12/2025
Applicant: 
UNIV RUTGERS [US]
Rutgers, the State University of New Jersey
US_2025364586_PA

Absstract of: US2025364586A1

A battery including a housing; an electrolyte disposed in the housing; and a first electrode, wherein a porosity of the first electrode varies across a surface of the first electrode. A method includes obtaining a first electrode having a first predetermined porosity, obtaining a second electrode having a second predetermined porosity, wherein the second predetermined porosity is different than the first predetermined porosity, and laminating the first electrode with the second electrode, thereby to provide for an interface free electrode structure with a porosity gradient.

NONAQUEOUS ELECTROCHEMICAL BATTERY CONTAINING A SEALING MEMBER

Publication No.:  EP4662727A1 17/12/2025
Applicant: 
TICONA LLC [US]
Ticona LLC
KR_20250146302_PA

Absstract of: CN120677572A

A non-aqueous electrochemical cell is provided. The battery includes a housing including an internal space extending to an open end, and a positive electrode, a negative electrode, a separator, and an electrolyte disposed within the internal space of the housing. A sealing member is disposed adjacent the open end of the housing, where the sealing member includes a polymer composition that includes a polyarylene sulfide and a bifunctional polymer that includes an epoxy functional group and a (meth) acrylate functional group. The epoxy content of the polymer composition is from about 0.3 parts by weight to about 2 parts by weight per 100 parts by weight of the polyarylene sulfide in the polymer composition.

PORTABLE VEHICLE BATTERY JUMP STARTER WITH AIR PUMP

Publication No.:  EP4662401A1 17/12/2025
Applicant: 
NOCO CO [US]
The Noco Company
CN_120958228_PA

Absstract of: AU2023428801A1

A vehicle battery jump starter with air pump device includes a vehicle battery jump starter and an air pump disposed within a cover. An internal battery is also disposed within the cover and connected to the vehicle battery jump starter and the air pump. A port is provided so as to provide connection to the device from an external vehicle battery. The air pump is configured such that it is powered by the external battery in a first mode of operation.

METHOD AND DEVICE FOR COOLING AN ELECTRICAL SYSTEM

Publication No.:  EP4665096A1 17/12/2025
Applicant: 
SIEMENS AG [DE]
Siemens Aktiengesellschaft
EP_4665096_PA

Absstract of: EP4665096A1

Vorgeschlagen wird ein Verfahren und eine Vorrichtung zur Entwärmung eines elektrischen Systems umfassend ein Erfassen einer zeitlichen Vorhersage eines Lastprofils, eine Berechnung einer benötigten Kühlleistung, und eine Anpassung der Kapazität eines Kühlungssystems mittels Ansteuerung dessen Anbindungskomponenten zu weiteren Kühlungssystemen, auf Basis der berechneten benötigten Kühlleistung. Die beschriebene innovative Lösung gestaltet den Wärmefluss von einer Hitzequelle zum Kühler effizienter und berücksichtigt gleichzeitig eine zeitliche Vorhersage der Anwendung, wie beispielsweise eines Lastprofils. Dies wird durch eine Wechselwirkung zwischen Kühlsystemen ermöglicht.

BATTERY SYSTEM INCLUDING IMPROVED ELECTRICAL CONNECTING ELEMENTS

Publication No.:  EP4664659A1 17/12/2025
Applicant: 
SAMSUNG SDI CO LTD [KR]
Samsung SDI Co., Ltd
EP_4664659_PA

Absstract of: EP4664659A1

The present disclosure refers to a battery system (100) including a housing (10) and a plurality of battery cells (12) accommodated within the housing (10), each of the battery cells (12) including cell terminals (16), wherein the cell terminals (16) of neighboring battery cells (12) are electrically interconnected via electrical connecting elements (20), each electrical connecting element (20) including a first layer (22) contacting neighboring cell terminals (16) and a second layer (24) disposed on top of the first layer (22), wherein the first layer (22) has a first melting point and the second layer (24) has a second melting point, wherein the second melting point is lower than the first melting point.

LIGHT-CURABLE COMPOSITION AND ASSEMBLY

Publication No.:  EP4663707A1 17/12/2025
Applicant: 
3M INNOVATIVE PROPERTIES COMPANY [US]
3M Innovative Properties Company
EP_4663707_PA

Absstract of: EP4663707A1

Provided is a light-curable composition useful as potting compositions in battery assemblies. The composition comprises, optionally, one or more monofunctional (meth)acrylate monomers, a crosslinker selected from multifunctional oligomeric (meth)acrylates, aliphatic urethane (meth)acrylates, aromatic urethane (meth)acrylates, polyester (meth)acrylates, and epoxy (meth)acrylates, one or more adhesion promoters selected from glycidyl (meth)acrylate, 2-hydroxyethyl (meth)acrylate acid phosphate, phosphonate ester-containing (meth)acrylic monomer, phosphate ester-containing (meth)acrylic monomer, silane, and (meth)acrylic acid. The composition further includes a photoinitiator, a flame retardant, and one or more hollow fillers.

HOT-FORMED BATTERY TRAY WITH SOFT CORNER REGIONS

Publication No.:  EP4663320A1 17/12/2025
Applicant: 
BENTELER AUTOMOBILTECHNIK GMBH [DE]
Benteler Automobiltechnik GmbH
EP_4663320_PA

Absstract of: EP4663320A1

Die Erfindung betrifft eine Batteriewanne (1) für einen Batterieträger eines Elektrofahrzeuges, wobei die Batteriewanne (1) einen Boden (3) aufweist, und sich einstückig und werkstoffeinheitlich von dem Boden (3) erstreckend eine umlaufende Wand aufweist und optional einen außen umlaufenden von der Wand abstehenden Flansch (6), wobei die Batteriewanne (1) aus einer härtbaren Stahlblechplatine (13) als warmumgeformtes und pressgehärtetes Bauteil hergestellt ist, mit einer Zugfestigkeit Rm größer gleich 1250 MPa, dadurch gekennzeichnet, dass in einem jeweiligen Eckbereich (10) der Seitenwände (4, 5) zueinander die Zugfestigkeit Rm kleiner 1100 MPa ist.

MESOPOROUS METAL OXIDE LAYER

Publication No.:  EP4663819A1 17/12/2025
Applicant: 
IMEC VZW [BE]
KATHOLIEKE UNIV LEUVEN KU LEUVEN RESEARCH & DEVELOPMENT [BE]
Imec VZW,
Katholieke Universiteit Leuven KU Leuven Research & Development
EP_4663819_PA

Absstract of: EP4663819A1

A method for fabricating a metal oxide layer involves providing a metallic nitride substrate and performing electrochemical oxidation of the metallic nitride substrate in either an acidic or basic environment to form the metal oxide layer. This electrochemical oxidation process is characterized by a gas-evolving reaction that results in the formation and escape of nitrogen gas from the forming metal oxide layer such that a mesoporous 3D interconnected metal oxide structure comprising a 3D network of interconnected pores is formed. This method enables the creation of metal oxide layers with specific properties suitable for various applications, including but not limited to, use in batteries, and as electrodes in molecular synthesis.

BATTERY, MANUFACTURING METHOD, AND ELECTRICAL APPARATUS

Publication No.:  EP4664541A1 17/12/2025
Applicant: 
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD [CN]
Contemporary Amperex Technology Co., Limited
EP_4664541_PA

Absstract of: EP4664541A1

The present application provides a battery, comprising electrode sheets, wherein each electrode sheet comprises a current collector, a first active layer, and a second active layer; the first active layer is located on at least one surface of the current collector; the second active layer is located on the surface of the first active layer away from the current collector; the first active layer and the second active layer each comprise an active substance and a gel electrolyte; the first active layer further comprises a swelling electrolyte provided with pores; part of the gel electrolyte in the first active layer is filled in the pores of the swelling electrolyte.

SECONDARY BATTERY AND ELECTRICAL DEVICE

Publication No.:  EP4664556A1 17/12/2025
Applicant: 
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD [CN]
Contemporary Amperex Technology Co., Limited
EP_4664556_A1

Absstract of: EP4664556A1

Provided in the present application is a secondary battery, comprising a positive electrode plate. The positive electrode plate is provided with a positive electrode active material. The positive electrode active material comprises an agglomerated positive electrode material and a monocrystalline-like positive electrode material. The agglomerated positive electrode material has a volume average particle size Dv50 of 8 µm-15 µm. The agglomerated positive electrode material has a primary particle size of 0.1 µm-0.6 µm. The monocrystalline-like positive electrode material has a volume average particle size Dv50 of 2.5 µm-4 µm. The monocrystalline-like positive electrode material has a primary particle size of 0.8 µm-2 µm. The mass ratio of the agglomerated positive electrode material to the monocrystalline-like positive electrode material is greater than or equal to 1. The present application also relates to a corresponding electrical device. The described secondary battery has a high energy density and an excellent cycle life.

ELECTRODE

Publication No.:  EP4664564A1 17/12/2025
Applicant: 
SK ON CO LTD [KR]
SK On Co., Ltd
EP_4664564_PA

Absstract of: EP4664564A1

The present application may provide an electrode, a battery cell, a battery module, and a battery pack comprising the electrode, and the electrode having a current collector and an active material layer located on at least one side of the current collector, wherein the active material layer comprises an active material, a binder and a conductive polymer, wherein the conductive polymer comprises a conductive component and an ionized polymer component, wherein the binder comprises a resin A having an SP<sub>d</sub> of 30 (MPa)<sup>1/2</sup> or less according to the following equation 1, wherein the polymer component comprises a resin B having an SP<sub>d</sub> of 30 (MPa)<sup>1/2</sup> or less according to the following equation 1: Equation 1 SP<sub>d</sub> = SP<sub>W</sub> - SP<sub>P</sub> In equation 1, SP<sub>W</sub> is the solubility parameter of water measured at 25°C., and SP<sub>P</sub> is the solubility parameter of the resin A or resin B measured at 25°C.

SECONDARY BATTERY

Nº publicación: EP4664623A1 17/12/2025

Applicant:

SAMSUNG SDI CO LTD [KR]
SAMSUNG SDI CO., LTD

EP_4664623_PA

Absstract of: EP4664623A1

An embodiment of the present invention relates to a secondary battery and addresses the technical problem of providing a secondary battery which can prevent deformation during the assembly of a cap assembly. To this end, disclosed in the present invention is a secondary battery comprising: a can; an electrode assembly accommodated in the can; a cap assembly for closing the can and including a cap-up and a safety vent; and a fixing means for fixing the cap-up and the safety vent to each other.

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