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BATTERY CELL

Resumen de: EP4657646A1

ABSTRACT: A battery cell (10A) includes a battery element (100), a front lid member (210A) covering an end part of the battery element (100), an exterior film (400) of which at least a part is wound around the battery element (100), a front barrier conductor (312A) covering at least a part of the front lid member (210A), and a front projecting conductor (314A) connected to the front barrier conductor (312A) and projecting from the front barrier conductor (312A).

CONNECTOR

Resumen de: EP4657671A1

A connector according to an embodiment of the present disclosure may include a connector housing, a terminal provided to be inserted into the connector housing in a predetermined insertion direction, and a terminal block inserted into the connector housing, surrounding the terminal, and configured to limit the movement of the terminal in a direction opposite to the insertion direction, wherein the terminal block may include a first block surrounding one surface of the terminal, and a second block provided to be coupled to the first block and surrounding the other surface of the terminal.

ELECTROLYTE AND LITHIUM-ION BATTERY APPLYING THE SAME

Resumen de: EP4657584A1

Provided is an electrolyte and a lithium-ion battery appying the same. The electrolyte includes a first additive, in which a mass fraction of the first additive in the electrolyte is 2.5-5.5%, the first additive contains trimethyl phosphate (TMP) and ethoxy(pentafluoro)cyclotriphosphazene (PFPN), and a mass ratio of the TMP to the PFPN is (0.5-2):(2-3.5). The electrolyte is added with the first additive containing TMP and PFPN, and both the TMP and PFPN have properties of low combustion heat, which enhances the flame retardant effect of the electrolyte. By applying the electrolyte in a lithium-ion battery, it not only reduces the risk of the lithium-ion battery becoming flammable and explosive, when suffering thermal runaway, caused by the generation of flammable gases due to the reduction and decomposition of the electrolyte, improving the safety performance of the batteries, but also reduces the gas generation of the battery stored at high temperatures, and improves the battery storage performance at high temperatures.

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

Resumen de: EP4657569A1

The present invention relates to a positive electrode active material including lithium transition metal oxide particles in a form of a single particle, wherein the lithium transition metal oxide has an average sphericity according to Equation 1 described in the present specification of 0.7 or more, and, when an electrode including the lithium transition metal oxide is rolled such that porosity is 20%, the average sphericity according to Equation 1 described in the present specification is 0.7 or more, and a positive electrode and a lithium secondary battery which include the same.

PROXY BROADCAST IN WIRELESS BATTERY MANAGEMENT

Resumen de: EP4657833A1

Proxy broadcasting techniques for a wireless battery management system can improve communication performance by designating a subset of clusters to serve as proxy broadcasters for another subset of clusters that are experiencing issues with reliably receiving control data from network managers. The techniques can include having two network managers broadcasting the control data in specified portions of a timeslot. The designated proxy broadcasters can receive the control data in a first portion of a timeslot and transmit the received control data to bad clusters in a second portion of the same timeslot.

HIGH ENERGY DENSITY ELECTROCHEMICAL DEVICE

Resumen de: EP4657541A1

The present disclosure relates to an electrochemical device that can simultaneously satisfy a high energy density of 400 Wh/kg or more, excellent lifespan characteristics, and stability. The electrochemical device according to the present disclosure includes a cathode; an anode including an anode current collector, or the anode current collector and lithium metal; and an electrolyte; wherein the cathode includes a cathode current collector; and a cathode active material layer formed on the cathode current collector, and including a porous binder scaffold and cathode active material particles.

METHOD FOR PRODUCING SULFIDE SOLID ELECTROLYTE

Resumen de: EP4657469A1

A method for producing a sulfide solid electrolyte having a small particle diameter that is excellent in productivity is provided by a method for producing a sulfide solid electrolyte, including: mixing a raw material-containing material containing a lithium atom, a phosphorus atom, and a sulfur atom, and a poor solvent, so as to provide a first fluid; mixing the first fluid and a second fluid containing a good solvent by using an in-line mixer, so as to provide a precursor-containing solution; and feeding the precursor-containing solution to a heat medium that is a liquid or a gas heated to a temperature higher than a boiling point of the good solvent, so as to evaporate the good solvent.

COMPOSITION FOR ELECTROCHEMICAL ELEMENT FUNCTIONAL LAYERS, FUNCTIONAL LAYER FOR ELECTROCHEMICAL ELEMENTS, MULTILAYER BODY FOR ELECTROCHEMICAL ELEMENTS, AND ELECTROCHEMICAL ELEMENT

Resumen de: EP4657641A1

A composition for a functional layer contains a particulate polymer having a core-shell structure. In this particulate polymer, coverage of an outer surface of the core portion by the shell portion is not less than 1% and not more than 90%, and a polymer A of the core portion has a degree of swelling in electrolyte solution of not less than ×0.1 and less than ×5, includes an unsaturated carboxylic acid ester monomer unit having a carbon number of 6 or less, and has a volume-average particle diameter of not less than 0.1 µm and not more than 10 µm.

METHOD FOR PRODUCING SULFIDE SOLID ELECTROLYTE POWDER

Resumen de: EP4657468A1

The present invention relates to a method for producing a sulfide solid electrolyte, the method comprising mixing raw materials together to produce a raw material mixture, synthesizing at least one powder selected from a sulfide solid electrolyte powder and a precursor of a sulfide solid electrolyte powder from the raw material mixture, and subjecting the powder to a heating treatment, in which the heating treatment is performed in an atmosphere having a SO₂ concentration of 1 to 1000 ppm by volume.

POSITIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

Resumen de: EP4657568A1

This positive electrode active material is a composite oxide having a crystal structure belonging to a space group R-3m and represented by a composition formula of Li1+aNibMncXdOe, in which: X is at least one type selected from the group consisting of typical elements and transition metal elements other than Li, Ni, and Mn; a≤1.15, 0.35≤b≤0.70, 0.30≤c≤0.65, and 0≤d≤0.07 are satisfied; and e is a value satisfying electrical neutrality. The positive electrode active material has a value (α×β) of 0.090 or lower, which is the product of a Ni mixing rate α determined through Rietveld analysis and a strain β determined using the Williamson-Hall method.

LITHIUM SECONDARY BATTERY ELECTRODE PLATE AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Resumen de: EP4657538A1

The present invention is directed to an electrode plate for a lithium secondary battery, comprising a current collector layer; and an electrode mixture layer formed on one or both sides of the electrode mixture layer, wherein the electrode mixture layer comprises a first region formed from one edge of the electrode mixture layer in the direction of the other edge relative to a transverse (TD) cross-section of the electrode mixture layer; and a second region excluding the first region, wherein the electrode mixture layer comprises a first particle and a second particle, each comprising an electrode active material, a conductive material, and a binder, wherein the first particle has a higher binder content than the second particle, or contains at least 30% of the total binder content contained in the particle in a region of a length of 20% or less of a length from an outermost surface portion of the particle to a center of the particle, and a lithium secondary battery comprising the same.

ELECTRODE ASSEMBLY AND RECHARGEABLE BATTERY INCLUDING THE SAME

Resumen de: EP4657580A1

An embodiment of the present disclosure provides an electrode assembly that includes a first electrode, a separator, and a second electrode and is wound with the first electrode, the separator, and the second electrode stacked, including: each of the first electrode and the second electrode includes a substrate; and an active material layer disposed on at least a portion of the substrate, and a portion of the substrate to which the active material layer is not applied is bent in an opposite direction to a wound center.

POWER STORAGE DEVICE FOR VEHICLE AND POWER STORAGE DEVICE INSTALLATION STRUCTURE

Resumen de: EP4657607A1

A power storage device 10 for a vehicle of a first aspect includes: a battery module group 37 structured by a plurality of battery modules 36, in which a plurality of battery cells are accommodated, being disposed along one direction; and a mounting bracket 40 extending in the one direction, connecting the plurality of battery modules 37, and fixed to a beam-shaped member 28 extending in the one direction.

ELECTROLYTE ADDITIVE FOR ZINC METAL BATTERIES

Resumen de: EP4657588A1

An electrolyte composition for a Zinc metal electrochemical device said electrolyte composition comprising water, a zinc salt, and an additive of formula (I), its use and an electrochemical device comprising said electrolyte.

ELECTROLYTE ADDITIVE FOR ZN-MNO2 BATTERIES

Resumen de: EP4657589A1

An electrolyte composition for a Zn-MnO₂ electrochemical device said electrolyte composition comprising water, a zinc salt, and a combination of additives, wherein the combination of additives comprises an organic additive and an additive of formula (I), its use and an electrochemical device comprising said electrolyte.

COMPOSITION

Resumen de: EP4656252A2

The present specification discloses a composition, a fire extinguishing device, and a use thereof. The composition and the fire extinguishing device can be applied to a product with a possibility of abnormal heat generation, ignition, and/or explosion during drive, storage, and/or maintenance processes to effectively respond to the heat generation, ignition, and explosion. The composition and the fire extinguishing device can be applied, for example, to an article comprising a plurality of the products to respond to abnormal heat generation, explosion, and/or ignition occurring in any one product, and can prevent propagation of such heat generation, explosion, and/or ignition to other adjacent products. The composition and the fire extinguishing device also have excellent handleability and storage stability. The present specification also discloses a use of the composition and the fire extinguishing device.

ELECTRICITY STORAGE PACK

Resumen de: EP4657628A1

A herein disclosed electricity storage pack includes plural electric storage devices, a side frame that is arranged at an end part in a aligned direction, and a cover that is arranged to cover plural electric storage devices and at least a part of the side frame. Herein, the electricity storage pack includes a partition wall that is formed in a plate shape, that is arranged between the side frame and the electric storage devices, and that has a contact point where it comes into contact with the cover, includes a first adhesion agent that is arranged on a surface where the electric storage device and the cover are opposed to each other, and includes a second adhesion agent that is arranged on an area in which the side frame, the partition wall, and the cover are opposed to each other and which is isolated from the first adhesion agent.

BATTERY PACK AND OPERATING METHOD THEREOF

Resumen de: EP4657707A1

The present disclosure provides a battery pack (100) capable of normal release of an over-discharge prevention mode and an operating method thereof. When it is determined that an over-discharge condition is satisfied, the battery pack is controlled to the over-discharge prevention mode, and when operating in the over-discharge prevention mode, if a preset over-discharge prevention release condition is satisfied, it is possible to re-determine whether the battery module (110) satisfies an over-discharge condition and determine whether to release the over-discharge prevention mode.

INTEGRATED BATTERY CELL PRE-LITHIATION APPARATUS AND METHOD

Resumen de: EP4657596A1

The present invention provides an integrated battery cell pre-lithiation apparatus and method, which use a lithium source half electrode to pre-lithiate the battery cell in batch through an electrochemical method. The pre-lithiation apparatus comprises a pre-lithiation working box and an external power supply, wherein the pre-lithiation working box comprises a box body; a battery cell fixing element and a lithium source half electrode disposed within the box body; and a negative electrode current collector and a lithium source current collector, wherein the negative electrode current collector comprises a negative electrode busbar configured for being communicated with negative electrodes of a plurality of battery cells simultaneously, and the lithium source current collector is configured for being communicated with the lithium source half electrode. The negative electrode of the battery cell and the lithium source half electrode are connected to the external power supply via an electrical circuit, and provide an electrochemical lithium supplement under the action of the power supply. The pre-lithiation apparatus of the present application is easy to operate, and can perform pre-lithiation in batch. As compared to traditional pre-lithiation, the electrochemical pre-lithiation of the pre-lithiation apparatus of the present application results in better consistency and uniformity of the negative electrode pre-lithiation, better pre-lithiation effect, and lower requirements on

THERMAL MANAGEMENT PART, THERMAL MANAGEMENT ASSEMBLY, BATTERY AND ELECTRIC DEVICE

Resumen de: EP4657610A1

The present application belongs to the technical field of batteries. Provided are a thermal management part, a thermal management assembly, a battery and an electric device. The thermal management part comprises two straight walls and two bent walls, wherein the two straight walls are oppositely arranged in a first direction; the two bent walls are respectively connected to two ends of each straight wall in a second direction, the second direction being perpendicular to the first direction; and the two bent walls and two straight walls enclose an accommodating space, and the accommodating space is used for accommodating a heat exchange medium. By means of the thermal management part of such a structure, the bent walls are convenient to deform when the thermal management part is compressed in the first direction during manufacturing, such that the manufacturing tolerance of the thermal management part can be absorbed through compression so as to control the dimensions of the thermal management part in the first direction, thereby effectively improving the manufacturing accuracy of the thermal management part, ensuring the assembly accuracy between the thermal management part and a battery cell, and facilitating temperature regulation performed by the thermal management part on the battery cell.

BATTERY CELL, BATTERY AND ELECTRIC DEVICE

Resumen de: EP4657622A1

A battery cell, a battery, and a power consuming device are provided. The battery cell includes a housing and a protective member. The housing includes a shell and an end cap, the shell has an opening, and the end cap is connected to the shell and closes the opening. The end cap is connected to the shell to form a first connection portion. The protective member is arranged on an outer surface of the housing and covers at least a part of the first connection portion. The protective member includes a liquid absorbing layer and a barrier layer, and the barrier layer is located on a side of the liquid absorbing layer facing away from the first connection portion. The protective member is arranged on the battery cell, and the protective member covers at least a part of the first connection portion. When liquid leakage occurs at the first connection portion, the liquid absorbing layer can absorb liquid leaking from the first connection portion, and when the liquid absorbing layer absorbs the liquid and reaches saturation, the barrier layer can prevent the liquid from dripping from the side of the liquid absorbing layer facing away from the first connection portion, so that the liquid absorbed by the liquid absorbing layer is less likely to leak out, and the liquid is prevented from flowing in all directions to cause short circuit and fire or from being ignited by high-voltage sparking, helping improve the safety of the battery cell.

NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY AND LITHIUM ION SECONDARY BATTERY

Resumen de: EP4657546A1

A negative electrode active material layer of a herein disclosed negative electrode contains a chemical compound represented General formula (1) described below. Incidentally, each of R1 to R5 in the formula is independently selected from a group consisting of a hydrogen, an alkyl group, a hydroxy group, a cyano group, an aldehyde group, an ether group, an ester group, an amino group, and a phenyl group, R6 is the alkyl group, and at least 1 of the R1 to the R5 is the hydroxy group. According to the negative electrode containing the chemical compound having the above described configuration, it is possible to suitably inhibit an occurrence of an inside short circuit and a reduction of a battery capacity which are caused by a precipitation of a metal Li.

POSITIVE ELECTRODE ACTIVE MATERIAL, POSITIVE ELECTRODE PLATE, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

Resumen de: EP4657566A1

A positive electrode active material includes a secondary particle (1) in which primary particles (10) are aggregated. A ratio (L11/L12) of an average value of maximum lengths L11 of first particles (11) in a first direction (d1) and an average value of maximum lengths L12 of the first particles (11) in a second direction (d2) as defined in the claims is 0.5 to 1.10. A ratio (L21/L22) of an average value of maximum lengths L21 of second particles (12) in the first direction (d1) and an average value of maximum lengths L22 of the second particles (12) in the second direction (d2) as defined in the claims is 1.40 or more. The second particles (12) include oriented particles that have major axis directions (d3) radially oriented in the first direction and that have the average value of the maximum lengths L21 of 640 nm or less.

APPARATUS AND METHOD FOR ROLLING ELECTRODE PLATE

Resumen de: EP4657535A2

An apparatus for rolling an electrode plate, includes: a main rolling portion including a first rolling portion and a second rolling portion; an adjustment roller portion to be moved up and down and contact one surface of an electrode plate that has passed between the first rolling portion and the second rolling portion, the electrode plate including: a substrate; an active material coating portion on the substrate, the active material coating portion including an active material applied in a plurality of rows on the substrate; and a plurality of uncoated portions corresponding to areas of the substrate where the active material is not applied; and a plurality of pressing portions configured to press the plurality of uncoated portions, and located at a rear end of the main rolling portion with respect to a transfer direction of the electrode plate.

CONVEYING APPARATUS FOR MIXTURE SHEET

Nº publicación: EP4657534A1 03/12/2025

Solicitante:

PANASONIC IP MAN CO LTD [JP]
Panasonic Intellectual Property Management Co., Ltd

Resumen de: EP4657534A1

A conveying apparatus 1 is provided with a first roll 2 and a second roll 4 that turn while holding therebetween a mixture sheet 6 of a dry electrode mixture 8 and thus convey the mixture sheet 6. A first circumferential surface 2a of the first roll 2 has a first surface roughness. A second circumferential surface 4a of the second roll 4 has a second surface roughness greater than the first surface roughness. The second roll 4 is positioned downstream of the first roll 2 in the conveyance direction of the mixture sheet 6 and conveys, while supporting with the second circumferential surface 4a, the mixture sheet 6 having passed through a gap G between the first roll 2 and the second roll 4.