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BINDER FOR ALL-SOLID-STATE BATTERY, BINDER COMPOSITION, POSITIVE ELECTRODE FOR ALL-SOLID-STATE BATTERY, AND ALL-SOLID-STATE BATTERY COMPRISING SAME

Resumen de: EP4641703A1

The present disclosure relates to a binder for an all-solid-state battery comprising a main chain crosslinked by a compound comprising two or more thiol functional groups, wherein the main chain comprises an aromatic vinyl monomer-derived repeating unit and a conjugated diene-based monomer-derived repeating unit; a positive electrode for an all-solid-state battery comprising the binder for an all-solid-state battery, a conductive material, a positive electrode active material, and a solid electrolyte; and an all-solid-state battery comprising a positive electrode, a negative electrode, and a solid electrolyte layer disposed between the positive electrode and the negative electrode, wherein the positive electrode comprises the positive electrode for an all-solid-state battery.

DEVICE FOR MEASURING BACK ENGAGEMENT OF SLITTING KNIFE

Resumen de: EP4641130A1

This application provides a detection device for a knife clearance of a slitting knife. The device includes a support unit and a detection unit. A knife holder of the slitting knife is disposed on the support unit. The detection unit is connected to the support unit. The detection unit includes a charge-coupled device (CCD) sensor assembly. The CCD sensor assembly faces the slitting knife. The CCD sensor assembly is configured to detect the knife clearance of the slitting knife. Compared with the manual visual method for determining the knife clearance, using the CCD sensor assembly to detect the knife clearance of the slitting knife can improve the detection efficiency and the detection precision, thereby ensuring the product quality.

IMPROVED SEPARATORS, LEAD ACID BATTERIES, AND METHODS AND SYSTEMS ASSOCIATED THEREWITH

Resumen de: EP4641748A2

A separator is provided with a novel construction and/or a combination of improved properties. Batteries, methods, and systems associated therewith are also provided. In certain embodiments, novel or improved separators, battery separators, enhanced flooded battery separators, batteries, cells, and/or methods of manufacture and/or use of such separators, battery separators, enhanced flooded battery separators, cells, and/or batteries are provided. In addition, there is disclosed herein methods, systems, and battery separators having a reduced ER, improved puncture strength, improved separator CMD stiffness, improved oxidation resistance, reduced separator thickness, reduced basis weight, and any combination thereof. In accordance with at least certain embodiments, separators are provided in battery applications for flat-plate batteries, tubular batteries, vehicle SLI, and HEV ISS applications, deep cycle applications, golf car or golf cart, and e-rickshaw batteries, batteries operating in a partial state of charge ("PSOC"), inverter batteries; and storage batteries for renewable energy sources, and any combination thereof.

ALL-SOLID-STATE BATTERY

Resumen de: EP4641743A1

According to the present disclosure, provided is an all-solid-state battery, particularly an all-solid-state battery in which a lithium layer is formed during a charging process without forming a separate negative electrode active material layer on a negative electrode current collector during the manufacturing process of the battery, wherein energy density may be further maximized by not including amorphous carbon between the negative electrode current collector and a solid electrolyte layer, and the lithium dendrites may be prevented from growing through the gaps in the solid electrolyte layer as charging and discharging processes are repeated, even without including amorphous carbon, thereby solving the defects of generating short circuits or capacity reduction, and further, exhibiting excellent capacity retention according to the cycle.

ELECTRODE ASSEMBLY AND SECONDARY BATTERY COMPRISING SAME

Resumen de: EP4641747A1

An electrode assembly according to an embodiment of the present disclosure comprises: a first electrode; a second electrode; and a separator interposed between the first electrode and the second electrode. The first electrode, the second electrode, and the separator are wound together to form a jelly roll structure. The first electrode includes a first electrode current collector and a first active material part formed by applying an electrode active material to one side or both sides of the first electrode current collector. The second electrode includes a second electrode current collector and a second active material part formed by applying an electrode active material to one side or both sides of the second electrode current collector. A first exposed part to which the electrode active material is not applied in the first electrode current collector extends in a first direction, and a second exposed part to which the electrode active material is not applied in the second electrode current collector extends in a second direction opposite to the first direction. The first exposed part and the second exposed part have a bending point for each winding turn. The length from the end of the first electrode current collector in the second direction to the bending point of the first exposed part gradually increases for each winding turn along the radial direction of the jelly roll structure. The radial direction is a direction directed from a core part to an outer part of the jell

METHOD FOR REGENERATING POSITIVE ELECTRODE ACTIVE MATERIAL AND REGENERATED POSITIVE ELECTRODE ACTIVE MATERIAL MANUFACTURED THEREBY

Resumen de: EP4641757A1

The present invention relates to a method of recycling a cathode active material and a recycled cathode active material prepared using the same. More particularly, the present inventio relates to a method of recycling a cathode active material, the method including step (a) of heat-treating a waste cathode containing a current collector and a cathode active material layer coated on the current collector in the air or under oxygen atmosphere to recover a cathode active material; step (b) of adding a lithium precursor to the recovered cathode active material and performing heat treatment in the air to recover the crystal structure of the cathode active material; step (c) of adding a dopant precursor to the cathode active material having the recovered crystal structure and performing doping by heat treatment; and step (d) of washing the doped cathode active material with a washing solution and a recycled cathode active material prepared using the same.According to the present invention, the present invention has an effect of providing a method of recycling a cathode active material having improved capacity characteristics and lifespan characteristics and excellent crack resistance by doping a recycled cathode active material with a predetermined dopant according to a predetermined method and a recycled cathode active material prepared using the same.

APPARATUS FOR INSPECTING BATTERY SLITTER

Resumen de: EP4641179A1

An apparatus for inspecting a slitter, according to an embodiment of the present invention, inspects the assembly state of a slitter that is applied to a slitting process of a battery, and may comprise: an imaging device for capturing an image of installation shapes of an upper knife and a lower knife included in an upper-knife unit and a lower-knife unit and cutting an electrode through a rotational motion; and a control unit for deriving at least one inspection parameter from the captured image of the installation shapes of the upper knife and the lower knife, and determining the assembly state of the slitter according to the derived inspection parameter.

WELDING STRUCTURE OF BATTERY CAN, CURRENT COLLECTING PLATE AND CAP, AND BATTERY CELL USING SAME

Resumen de: EP4641817A1

The present disclosure provides a welding structure of a battery can, a current collector plate and a cap, a battery cell utilizing the same, and a manufacturing method thereof. The current collector plate of the battery cell includes a body portion connected to an electrode tab of the electrode assembly, a can connection portion that is disposed radially further outward than the body portion and is connected to at least one of the side wall member and the cap, and a bridge whose radial inner side is connected to the body portion and whose radial outer side is connected to the can connection portion, and which extends radially. The bridge includes a first bending portion bent so that an extension direction of the bridge portion extending radially outward is directed to an axial outer side, a second bending portion bent so that an extension direction of the bridge portion extending axially outward is directed to a radial outer side, and an offset bridge portion whose radial inner side is connected to the first bending portion and whose radial outer side is connected to the second bending portion. Accordingly, the impact of the welding heat of the can and the cap on the electrode assembly through the current collector plate may be minimized.

PRINTED CIRCUIT BOARD AND BATTERY SYSTEM USING SAME

Resumen de: EP4642172A1

Provided are a printed circuit board and a battery system using the same. The printed circuit board includes: a plurality of battery monitoring integrated circuit (BMIC) mounting circuits, each providing an electrical connection for its corresponding plurality of battery cells; and a connection module providing electrical connections among the first BMIC mounting circuit disposed at one outermost side of the plurality of BMIC mounting circuits, the second BMIC mounting circuit adjacent to the first BMIC mounting circuit, and a first connection terminal, wherein the first connection terminal is connected to a master battery management system (MBMS), the connection module provides the connection between the second BMIC mounting circuit and the first connection terminal when the BMIC is not electrically connected to the first BMIC mounting circuit, and the connection module provides the connections between the first connection terminal and the first BMIC mounting circuit and between the first BMIC mounting circuit and the second BMIC mounting circuit when the BMIC is electrically connected to the first BMIC mounting circuit.

BATTERY MODULE AND BATTERY PACK INCLUDING THE SAME

Resumen de: EP4641795A2

The battery pack according to one embodiment of the present disclosure includes: a lower pack housing including a plurality of module regions; a thermally conductive resin layer located in the module region; a battery module mounted on the module region and located on the thermally conductive resin layer; and an upper pack housing for covering the battery module, wherein the battery module comprises a battery cell stack in which a plurality of battery cells are stacked, and the battery cell stack directly faces the thermally conductive resin layer, wherein the battery cell stack includes cooling fin located between battery cells adjacent to each other among the plurality of battery cells, and wherein the end portion of the cooling fin comes into contact with the thermally conductive resin layer.

SEPARATOR FOR ELECTROCHEMICAL DEVICE AND ELECTROCHEMICAL DEVICE INCLUDING THE SAME

Resumen de: EP4641809A2

Provided is a separator for an electrochemical device. The separator includes a separator substrate made of a porous polymer material, wherein the separator substrate has a small thickness, excellent resistance characteristics and ion conductivity, and high mechanical strength. When the separator is applied to a battery, it is possible to improve the output characteristics of the battery.

NEGATIVE ELECTRODES FOR RECHARGEABLE LITHIUM BATTERIES, MANUFACTURING METHODS OF THE SAME, AND RECHARGEABLE LITHIUM BATTERIES INCLUDING THE SAME

Resumen de: EP4641649A1

Disclosed are a negative electrode for a rechargeable lithium battery, a method of manufacturing negative electrode, and a rechargeable lithium battery including the negative electrode. The negative electrode includes a negative electrode current collector, and a negative electrode active material layer located on the negative electrode current collector and including a negative electrode active material and a binder. The negative electrode active material includes a core including a material capable of reversibly intercalating and deintercalating lithium ions; a surface treatment layer located on a surface of the core and including a compound.

BATTERY AND ELECTRIC DEVICE

Resumen de: EP4641720A1

The present application discloses a battery and an electric device, the battery includes a plurality of first battery cells, each first battery cell includes a plurality of side walls, the plurality of side walls include a first side wall and a second side wall connected to each other and forming an included angle, the first side wall is the side wall of the first battery cell with the largest area, each first battery cell is disposed opposite to at least one first side wall and at least one second side wall in a plurality of adjacent first battery cells, and two oppositely disposed first side walls of adjacent first battery cells are disposed in a staggered manner.

BATTERY PACK, CHARGING METHOD THEREFOR AND ELECTRIC VEHICLE COMPRISING SAME

Resumen de: EP4641879A1

The present invention provides a battery pack including a first and second battery module groups, a battery pack positive terminal connected to a positive terminal of the second battery module group and connected to an output of an external charging system, a battery pack negative terminal to which a negative terminal of the first battery module group is connected, first and second switches respectively provided on paths between positive terminals and negative terminals of the first and second battery module groups to open and close parallel connection paths of the first and second battery module groups, and a third switch provided between the first and second battery module groups and provided on a path between the positive terminal of the first battery module group and the negative terminal of the second battery module group to open and close a serial connection path of the first and second battery module groups, a charging method thereof, and an electric vehicle having the same.

BATTERY AND ELECTRIC APPARATUS

Resumen de: EP4641742A1

The present application provides a battery and an electric apparatus. The battery comprises a cell, a cell shell wrapping the cell and an electrolyte. The cell comprises a cathode piece, the cathode piece comprises a cathode current collector and a cathode film layer arranged on at least one surface of the cathode current collector, and the cathode film layer comprises a cathode active material.The battery satisfies the following: α×ρEL/PD×Ccathode+V×h/Ccell≤mEL.

BATTERY CELL, BATTERY AND ELECTRICAL DEVICE

Resumen de: EP4641814A1

The present application belongs to the technical field of batteries, and provides a battery cell, a battery, and an electric device. The battery cell includes an electrode body, tabs, and connectors. The tab has a first side edge and a second side edge opposite to each other, the first side edge of the tab is connected to the electrode body, and the connector is connected to the second side edge of the tab. A bending portion is provided between the first side edge and the second side edge of the tab. According to the battery cell provided in the present application, the possibility that the tab is pulled and broken when the battery cell expands can be reduced, thereby improving the reliability of the battery cell.

LITHIUM REPLENISHMENT COMPOSITE MATERIAL AND PREPARATION METHOD THEREFOR, POSITIVE ELECTRODE SHEET, SEPARATOR, SECONDARY BATTERY, AND ELECTRICAL DEVICE

Resumen de: EP4641700A1

This application discloses a lithium replenishment composite material and a preparation method thereof, a positive electrode plate, a separator, a secondary battery, and an electrical device, and relates to the field of batteries. The lithium replenishment composite material includes a core and a coating layer containing a conductive material that is disposed outside the core and that at least partially coats the core; a material of the core includes a lithium replenishment agent and a metal catalyst, and the lithium replenishment agent includes an organic lithium replenishment agent. During a first charge cycle of a battery, the organic lithium replenishment agent releases lithium ions to replenish lithium for the negative electrode, while remaining components convert into gases and are expelled from the battery, not affecting a mass energy density or subsequent performance of the battery. The metal catalyst can lower a decomposition potential of the organic lithium replenishment agent, enabling the organic lithium replenishment agent to deliver a greater capacity at a lower potential, achieving lithium replenishment while avoiding irreversible damage to a positive electrode active material structure and an electrolyte at a high potential. The coating layer containing a conductive material can suppress dissolution of metal from the metal catalyst, enhance electrical conductivity of the lithium replenishment composite material, and optimize cycling performance of the battery.

ACID OR MOISTURE REDUCING AGENT FOR NON-AQUEOUS ELECTROLYTE, NON-AQUEOUS ELECTROLYTE COMPRISING SAME, LITHIUM SECONDARY BATTERY CONTAINING NON-AQUEOUS ELECTROLYTE, AND METHOD FOR REDUCING ACID OR MOISTURE IN NON-AQUEOUS ELECTROLYTE

Resumen de: EP4641735A1

There is provided a non-aqueous electrolyte solution that reduces acid and/or moisture to decrease gas generation under high temperature conditions in order to suppress degradation in battery characteristics. An acid or moisture reducing agent for the non-aqueous electrolyte solution of the present disclosure includes a diisocyanate compound represented by Formula (1), (2) or (3), wherein the non-aqueous electrolyte solution includes a fluorine atom-containing cyclic carbonate:

APPARATUS AND METHOD FOR MANAGING BATTERY

Resumen de: EP4641749A2

A battery management apparatus according to an embodiment of the present disclosure includes a profile obtaining unit configured to obtain a battery profile and a differential profile based on voltage and capacity of a battery; a control unit configured to generate a comparison full-cell profile and a comparison differential profile based on a preset reference positive electrode profile and a preset reference negative electrode profile, adjust the reference positive electrode profile and the reference negative electrode profile so that the comparison full-cell profile and the comparison differential profile correspond to the battery profile and the differential profile, respectively, and determine an adjustment positive electrode profile and an adjustment negative electrode profile according to the adjustment result as a positive electrode profile and a negative electrode profile of the battery, respectively.

BATTERY PACK

Resumen de: EP4641764A1

Battery pack comprising: a plurality of battery cells (C) arranged in a first direction (Z1); an end plate (E) arranged on the outside of an outermost battery cell of the plurality of battery cells (C) in the first direction (Z1); a cooling plate (100) extending across bottom surfaces (12) of the plurality of battery cells (C); and an insulating block (IB) positioned at a coupling position (CP) between the end plate (E) and the cooling plate (100).The battery pack is capable of providing a uniform temperature environment for a plurality of battery cells to eliminate or alleviate temperature variation depending on positions of the battery cells. The battery pack is also capable of eliminating or alleviating variation in electrical output characteristics due to the temperature variation. The battery pack provides a heat flow along a common first path for battery cells toward a cooling plate extending across bottom surfaces of the battery cells while suppressing heat flow along a second path from a side of the outermost battery cell among the battery cells.

POSITIVE ELECTRODES FOR RECHARGEABLE LITHIUM BATTERIES AND RECHARGEABLE LITHIUM BATTERIES INCLUDING THE SAME

Resumen de: EP4641705A1

Disclosed are a positive electrode for a rechargeable lithium battery and a rechargeable lithium battery including the positive electrode. The positive electrode includes a positive electrode current collector, a safety functional layer on the positive electrode current collector, and a positive electrode active material layer on the safety functional layer, wherein the safety functional layer includes a lithium iron phosphate-based compound and an endothermic material.

BATTERY CELL, BATTERY AND ELECTRIC DEVICE

Resumen de: EP4641796A1

Provided in the present application are a battery cell, a battery, and an electric device. The battery cell includes a casing, an electrode assembly, and a support member. The casing is provided with an accommodation cavity. The electrode assembly is disposed in the accommodation cavity and includes a first electrode plate and a second electrode plate arranged according to a preset order in a first direction, the first electrode plate including a first portion overlapping the second electrode plate and a second portion extending beyond the second electrode plate. At least part of the support member is disposed between the electrode assembly and the casing in the first direction, a bending strength of the support member is greater than a bending strength of the first electrode plate, and a projection of the support member in the first direction covers a projection of the second portion in the first direction.

SECONDARY BATTERY AND ELECTRIC APPARATUS

Resumen de: EP4641730A1

A secondary battery is provided. The secondary battery includes an electrolyte solution and a positive electrode. The electrolyte solution contains an organic lithium salt. The positive electrode includes a positive electrode film layer. The energy density per unit area of the positive electrode film layer on a single side is 18-37 mWh/cm², and optionally 18-35.7 mWh/cm². Through the cooperation of the electrolyte solution and the positive electrode, the energy density and the dynamic performance of the battery are both improved.

BATTERY CELL, BATTERY AND ELECTRICAL APPARATUS

Resumen de: EP4641807A1

The present application relates to a battery cell, a battery, and an electrical apparatus. The battery cell comprises an electrode assembly, the electrode assembly comprising 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, and 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 swelling polymer, the swelling polymer satisfying: 300%≤m2/m1≤10000%, and m3/m2≤50%.

LITHIUM BATTERY AND PREPARATION METHOD AND CONTROL METHOD THEREFOR, BATTERY SYSTEM, AND ELECTRIC VEHICLE

Nº publicación: EP4641727A1 29/10/2025

Solicitante:

BYD CO LTD [CN]
BYD Company Limited

Resumen de: EP4641727A1

A lithium battery, comprising a positive electrode and a negative electrode, wherein a negative electrode material layer of the negative electrode comprises a lithium-silicon composite negative electrode active material, and when the lithium battery is charged to 100% SOC, the lithium-silicon composite negative electrode active material comprises a lithium-silicon alloy Li_4.4Si and elemental lithium; and the positive electrode comprises a first positive electrode active material and a second positive electrode active material, wherein the first positive electrode active material contains lithium, and the second positive electrode active material comprises elemental sulfur and/or a sulfur-containing compound. Further provided in the present application are a preparation method and a control method for the lithium battery, a battery system comprising the lithium battery, and an electric vehicle.