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DISCHARGE TREATMENT METHOD

Resumen de: US2025293535A1

A discharge treatment method includes: a discharging step of discharging a depleted lithium ion secondary battery to cause lithium to move from a negative electrode of the lithium ion secondary battery to a positive electrode of the lithium ion secondary battery; a charging step of charging the lithium ion secondary battery at a low voltage at which a ratio of lithium returning to the negative electrode is small; a measuring step of measuring a capacity of the lithium ion secondary battery after being charged at the low voltage for a predetermined period of time; and a confirming step of confirming a state of health (SOH) on a basis of the capacity of the lithium ion secondary battery measured, in which charge treatment in the charging step is terminated at a point of time when the SOH of the lithium ion secondary battery reaches a critical point of recovery.

AUTOMATIC CONNECTING SYSTEM FOR BSA INSPECTION

Resumen de: US2025293475A1

An automatic connecting system for a battery system assembly (BSA) inspection, including a vision unit configured to recognize a plurality of plugs provided in a battery system assembly, a connector connecting unit configured to grip connectors, the connectors respectively matching the plurality of plugs among the connectors, move the gripped connectors to positions of those plugs, and then connect the connectors to the plugs, one or more processors configured to execute instructions, and a memory storing the instructions, an execution of the instructions configures the one or more processors to receive information about the plurality of plugs recognized by the vision unit and control the connector connecting unit to operate.

MEDICAL DEVICE WITH IMPROVED BATTERY STORAGE SYSTEM

Resumen de: US2025293531A1

A medical device includes an electric battery storage system including a plurality of battery modules; module fixtures, wherein the battery modules are in the module fixtures, an arrangement of the battery modules in the module fixtures provide a power-related interconnection of the battery modules, the module fixtures are divided into a plurality of basic fixtures and at least one additional fixture; and an equalizing arrangement assigned to the battery storage system, the equalizing arrangement being configured to equalize a low-loss equalization of a basic charge level and an additional charge level between battery modules in the basic fixtures and having a uniform basic charge level and a battery module in the additional fixture and having an additional charge level, and the equalizing arrangement is not configured to cause a uniform basic charge level within the battery modules in the basic fixtures.

WORK MACHINES AND METHOD OF OPERATING WORK MACHINES

Resumen de: US2025293538A1

A work machine includes first and second battery systems and a controller. The first and second battery systems each include one or more batteries, and a thermal management system. The controller is operatively connected to the first and second battery systems and configured to operate the work machine in a full operation mode powered by the first and second battery systems, and on condition of an indication of a fault in one of the first and second battery systems, change an operating mode of the work machine from the full operation mode to a fault operation mode powered by the other of the first and second battery systems. The full operation mode requires a first minimum amount of electrical power that is greater than a second minimum amount of electrical power required for the fault operation mode.

POWER SUPPLY CIRCUIT

Resumen de: US2025293510A1

A power supply circuit is supplied power from a battery and supply power to a battery monitoring unit that monitors the condition of the battery. The power supply circuit includes: a fuse function unit, provided in a current path connecting the battery and the battery monitoring unit, that interrupts a current exceeding a predetermined current, a path resistor provided in the current path between the fuse function unit and the battery monitoring unit, and a formation circuit that forms a bypass path that allows the current exceeding the predetermined current to flow to the fuse function unit without passing through the path resistor when a short circuit occurs in a path through the path resistor.

POUCH-TYPE BATTERY

Resumen de: US2025293354A1

A pouch-type battery is provided that includes an electrode assembly including a first electrode, a second electrode, and a separator. A pouch accommodates the electrode assembly such that at least a part of the first electrode and the second electrode are exposed to outside of the pouch. A protection tape is attached to a surface of the pouch and covers at least part of a sealing portion of the pouch. The protection tape includes a first fixing portion and a second fixing portion each extending from a lower end of the protection tape, with an end of the first fixing portion being arranged on a bottom surface of the pouch, and with the second fixing portion covering at least part of the first fixing portion.

PROTECTION LAYER FOR ELECTROCHEMICAL BATTERIES AND SYSTEMS AND METHODS THEREFOR

Resumen de: US2025293355A1

A secondary battery assembly includes an electrode assembly having mutually perpendicular transverse, longitudinal, and vertical axes corresponding to X, Y and Z axes, respectively. A constraint is disposed on an outer surface of the electrode assembly. At least one of the electrode assembly or constraint has a protrusion extending in an X-Y plane defined by the X and Y axes and having a first radius of curvature in the X-Y plane. A battery enclosure encloses the electrode assembly and the constraint. An enclosure protection layer is disposed over at least a portion of the protrusion and between the protrusion and the battery enclosure. The enclosure protection layer defines a second radius of curvature overlying the first radius of curvature in the X-Y plane. The second radius of curvature is greater than the first radius of curvature to thereby reduce the potential of the protrusion causing damage to the battery enclosure.

RECHARGEABLE LITHIUM BATTERY

Resumen de: US2025293357A1

The present disclosure relates to a rechargeable lithium battery and is directed to providing a rechargeable lithium battery having excellent reliability by significantly decreasing electrical contact resistance between a substrate end part and a case and decreasing variation in battery resistance. To this end, the present disclosure includes a swelling tape positioned between the substrate end part and the case, and the swelling tape includes a silicone-based resin-containing film.

BATTERY MODULE AND BATTERY PACK

Resumen de: US2025293341A1

A battery module includes a liquid-cooling assembly, a battery cell assembly, and a plurality of heat-conductive members. The liquid-cooling assembly includes a plurality of liquid-cooling plates extending in a first direction, each of the liquid-cooling plates including a plurality of arc-shaped portions. The battery cell assembly includes a plurality of cylindrically-shaped battery cells. Each of the heat-conductive members is disposed between a battery cell of the plurality of battery cells and a respective arc-shaped portion of the plurality of arc-shaped portions of the liquid-cooling plate for which the battery cell is disposed on a side thereof. For each of the plurality of heat-conductive members, an angle α between lines connecting a center of an adjacent battery cell and either end of the heat-conductive member satisfies: 72°≤α≤82°.

POWER STORAGE DEVICE

Resumen de: US2025293340A1

A power storage device includes: a power storage module including an external terminal; a relay box provided at a position adjacent to the power storage module; a cooler provided in contact with the power storage module; and a main bus bar provided opposite to the power storage module with respect to the cooler and connected to the external terminal and the relay box. The cooler includes a supply portion supplied with refrigerant, and a flow path through which the refrigerant flows. The flow path includes an introduction portion extending from a portion of connection with the supply portion. The main bus bar includes an overlap portion extending so as to overlap the introduction portion. As a result, the main bus bar is provided so as to at least partially overlap the introduction portion through which cooler refrigerant flows than through a portion of flow path other than the introduction portion.

BATTERY MODULE

Resumen de: US2025293343A1

A battery module includes a plurality of battery cells, a busbar in contact with each terminal of the plurality of battery cells, and a first cooler facing the busbar to cool the plurality of battery cells.

POLYMER COMPOSITE MEMBRANE AND PREPARATION METHOD THEREFOR, COMPOSITE CURRENT COLLECTOR, AND USE

Resumen de: WO2025189562A1

The present application relates to the technical field of battery materials and provides a polymer composite membrane and a preparation method therefor, a composite current collector, and a use. The polymer composite membrane comprises a high-molecular polymer and a carbon nanomaterial loaded with an oxide. In the present application, the high-molecular polymer and the carbon nanomaterial loaded with the oxide are compounded, so that by means of the relatively high surface polarity of the carbon nanomaterial loaded with the oxide, the stability of an interface between the carbon nanomaterial and the polymer can be improved, thereby solving the problem that the interface between the polymer and the carbon nanomaterial is unstable, and thus improving the mechanical properties of the membrane. The oxide on the surface of the carbon nanomaterial can serve as a site for heterogeneous crystallization nucleation of the high-molecular polymer, and due to the relatively high specific surface area generated by the attachment of the oxide to the carbon nanomaterial, the crystallinity of the prepared polymer composite membrane can be significantly improved, and thus the mechanical properties of the polymer composite membrane are improved. During the preparation of the composite current collector on this basis, the product defect rate caused by membrane rupture is significantly reduced, and the mechanical properties are significantly improved.

CONDUCTIVE PARTICLE COATED INSULATION WITHSTAND VOLTAGE TEST METHOD

Resumen de: WO2025189566A1

The present invention relates to the technical field of battery cell production and test, and in particular to a conductive particle coated insulation withstand voltage test method, comprising the following steps: pressing an electrode protection cover plate on an electrode on an insulating layer of a battery cell to form a battery cell to be tested; moving the battery cell to be tested into a metal groove; filling the position between the metal groove and an insulating layer of the battery cell to be tested with conductive particles; connecting, by means of a wire, a ground terminal of an insulation withstand voltage tester to the battery cell to be tested; and connecting a high-voltage terminal of the insulation withstand voltage tester to the metal groove by means of a second wire; and using the insulation withstand voltage tester to test the battery cell to be tested. Because the conductive particles fully coat an insulating coating of the battery cell to be tested, an air chamber (bubble or air gap) is prevented from being formed between a conductive medium and the insulating coating, the defect point of insufficient insulation of the coating of the battery cell is prevented from being concealed due to large impedance of the gas chamber, and release of a product having non-compliant insulation is eradicated.

BARE CELL PAIRING METHOD AND SYSTEM

Resumen de: WO2025189577A1

Embodiments of the present disclosure relate to the technical field of batteries, and provide a bare cell pairing method and system. Bare cell feeding is performed at a feeding area of each parallel conveying apparatus, and there are at least two bearing parts in each conveying apparatus feeding area. Bare cells borne by corresponding bearing parts are conveyed to corresponding pairing areas by means of two parallel conveying apparatuses, the conveying direction of the conveying apparatuses is arranged to intersect the direction of parallel arrangement of the two conveying apparatuses, tabs of the bare cells on the two conveying apparatuses are arranged differently, and there are two bearing parts in the pairing area of each conveying apparatus. When the arrangement of a compliant bare cell does not meet a bare cell pairing requirement, the corresponding compliant bare cell is picked up by means of a pickup apparatus and is moved between a buffer station and a bearing part of a pairing area of a conveying apparatus along a preset direction, so that the bare cell in the pairing area meets the bare cell pairing requirement. Bare cell pairing is achieved by means of movement of the buffer station.

SYSTEM AND METHOD FOR SIMULTANEOUS CHARGING OF A PLURALITY OF BATTERIES

Resumen de: US2025293528A1

The various embodiments herein provide a system and method for enabling simultaneous charging of multiple batteries. The embodiments also provide a system and method generating a magnetic field through a conductive strip placed around a plurality of battery banks to enable efficient and simultaneous charging of multiple batteries. The embodiments optimize the method in which battery banks are charged, rejuvenated and recycled. By utilizing a conductive strip to create a magnetic field, the system magnetically pulse charges batteries simultaneously, reducing temperature rise and enhancing overall efficiency. The system enables noninvasive battery recycling and optimized restoration, extending battery life and supporting environmental sustainability. Key benefits include faster charging times, reduced thermal risks and the ability to rejuvenate batteries previously considered at the end of their lifecycle.

MANUFACTURING METHOD OF ELECTRIC STORAGE DEVICE AND ELECTRIC STORAGE DEVICE

Resumen de: US2025293417A1

A herein disclosed manufacturing method includes preparing a case part that comprises a penetration hole, inserting an electrode terminal into the penetration hole, arranging the case part and the electrode terminal in an inside cavity of a metal mold, and injecting a resin into the inside cavity of the metal mold. Then, a cavity surface of the metal mold includes a protruding part configured to protrude from the first surface toward a peripheral edge part of the connection surface. Then, at the injection of the resin, an injection amount of the resin to the inside cavity is controlled to make the protruding part dam the resin flowing into a resin flow channel. By doing this, it is possible to suppress the resin from adhering to the connection surface.

SECONDARY BATTERY, BATTERY MODULE INCLUDING THE SECONDARY BATTERY, BATTERY PACK INCLUDING THE BATTERY MODULE, AND VEHICLE INCLUDING THE BATTERY PACK

Resumen de: US2025293404A1

A secondary battery enabling a battery module and/or a battery pack to be compact compared to the related art, a battery module including the secondary battery, a battery pack including the battery module, and a vehicle including the battery pack. The secondary battery includes an electrode assembly including a first electrode plate, a separator, and a second electrode plate, a case configured to accommodate the electrode assembly and having a rectangular parallelepiped shape having a width and a height greater than the width, a cap plate coupled to the case, a first terminal on the cap plate and electrically connected to the first electrode plate, and a second terminal on the cap plate and electrically connected to the second electrode plate.

STORAGE CELL

Resumen de: US2025293400A1

A storage cell includes a first cell unit group including a plurality of first cell units, and a second cell unit group including a plurality of second cell units. Each of the cell units includes an electrode body, a laminate exterior body, a positive electrode current collector terminal, and a negative electrode current collector terminal. The pair of first cell units has a first connection portion, and the pair of second cell units has a second connection portion. In the first cell unit group, the first connection portions are arranged along the first direction so as to be located alternately up and down. In the second cell unit group, the second connection portions are arranged along the first direction so as to be located alternately up and down and so as not to overlap with the first connection portions respectively in the second direction.

AQUEOUS SEPARATOR SLURRY COMPOSITION

Resumen de: US2025293396A1

The invention relates to an aqueous slurry composition comprising an aqueous-based polymeric binder and anionic oxide nanoparticles that can be used, for example, in coating of electrodes and/or separators in electrochemical devices. This coating after drying, is highly porous, electronically isolating, and exhibits high dimensional stability at elevated temperatures.

SOLID-STATE BATTERY

Resumen de: US2025293295A1

Provided is a solid-state battery including an electrode stack in which a negative electrode, a solid electrolyte layer, and a positive electrode are sequentially stacked. The solid electrolyte layer includes a first solid electrolyte layer disposed on a side of the negative electrode. The positive electrode includes a positive electrode current collector and a positive electrode material mixture layer. A positive electrode current collector tab extends from one end of the positive electrode current collector. The positive electrode current collector tab has a low friction region formed on a surface thereof on a side facing the first solid electrolyte layer, the low friction region having a friction coefficient lower than that of the positive electrode current collector.

POWER STORAGE DEVICE AND VEHICLE

Resumen de: US2025293330A1

A power storage device includes a first cell connected body and a second cell connected body electrically connected to each other. The first cell connected body includes a plurality of first power storage cells and a first connection portion that electrically connects the first power storage cells to each other. The second cell connected body includes a plurality of second power storage cells and a second connection portion that electrically connects the second power storage cells to each other. The power storage device further includes a holding member that holds the first power storage cell and the second power storage cell that are opposed to each other. At least a portion of the holding member is located between the first power storage cell and the second power storage cell that are opposed to each other.

COMPOSITE SUBSTRATE FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE COMPOSITE SUBSTRATE

Resumen de: US2025293261A1

Disclosed are composite substrates and rechargeable lithium batteries including the composite substrates. A composite substrate includes a support layer and a coating layer on the support layer. The coating layer includes a carbon material and a hydrogel. The coating layer is configured to contain an electrolyte.

Lithium Secondary Battery Having Enhanced Safety

Resumen de: US2025293292A1

An electrolyte composition for a lithium secondary battery according to an aspect of the present disclosure includes a lithium salt, an electrolyte additive, and a non-aqueous organic solvent. The electrolyte additive includes an inorganic compound, the non-aqueous organic solvent includes a cyclic ester-based solvent in an amount of about 60 vol % or more and less than 100 vol %, and the electrolyte composition exhibits a heat flow of about 30.0 W/g or less within a range of about 250° C. to 350° C. when the heat flow measurement is performed on a mixture containing a negative electrode active material of a 100% charged lithium secondary battery and the electrolyte composition, at a weight ratio of about 1:0.5.

BATTERY MODULE HAVING STRUCTURE ALLOWING RAPID COOLING AND ESS INCLUDING THE SAME

Resumen de: US2025293334A1

A battery module includes a cell stack including a plurality of battery cells, a module housing configured to accommodate the cell stack, a sprinkler configured to supply cooling fluid to inside the module housing and provided through the module housing at one side of the cell stack in a stacking direction, and a first plurality of thermally expanding blocks disposed in an empty space inside the module housing and configured to be thermally expanded according to a temperature rise inside the module housing, thereby reducing the volume of the empty space to configured to be filled with the cooling fluid.

BATTERY CELL, BATTERY PACK, ELECTRIC DEVICE, AND ENERGY STORAGE DEVICE

Nº publicación: WO2025189469A1 18/09/2025

Solicitante:

CONTEMPORARY AMPEREX TECHNOLOGY CO LTD [CN]
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Resumen de: WO2025189469A1

A battery cell, a battery pack, an electric device, and an energy storage device used in the technical field of batteries. The battery cell comprises a casing and at least two groups of bare cells. An accommodating cavity is formed in the casing; the at least two groups of bare cells are disposed in the accommodating cavity; each bare cell comprises at least two layers of electrode sheets; the at least two layers of electrode sheets are stacked in a thickness direction; the same group of bare cells are stacked in the thickness direction; and different groups of bare cells are spread in a plane perpendicular to the thickness direction. Different groups of bare cells are spread in the plane perpendicular to the thickness direction, thereby reducing the number of stacked bare cells, and the major surfaces of different groups of bare cells will not press each other, so that the swelling force of the major surfaces can be reduced, the breakage risk of the electrode sheets is reduced, and the service life of the battery cell is prolonged.