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BATTERY PACK

Resumen de: US2025210805A1

Provided is a battery pack for further suppressing thermal influence of discharged gas on the wire harness. The battery pack according to the present disclosure is provided with a battery module having a smoke exhaust structure, and includes a lower mica sheet mounted on an upper surface of the battery module, a wire harness mounted on an upper surface of the lower mica sheet, and an upper mica sheet mounted on an upper surface of the wire harness, in which an inside of the battery pack of the wire harness is covered with at least one of the upper mica sheet and the lower mica sheet.

RECHARGEABLE BATTERY, RECHARGEABLE BATTERY PACK AND METHOD OF MANUFACTURING CAP PLATE OF RECHARGEABLE BATTERY

Resumen de: US2025210801A1

A rechargeable battery includes: an electrode assembly including an electrode; a case to accommodate the electrode assembly; a cap plate to seal an open area of the case; and one or more terminals electrically connected to the electrode, and coupled to the cap plate. The cap plate includes: a vent to expel gas generated from inside a cell outward; and a venting guide wall surrounding the vent, and protruding outward from a surface of the cap plate at a peripheral portion of the vent.

BATTERY MODULE AND BATTERY PACK INCLUDING THE SAME

Resumen de: US2025210804A1

A battery module includes a plurality of battery cells; a housing that houses a plurality of battery cells; a barrier that is arranged between the plurality of battery cells and partitions a compartment together with the housing; and a vent part for a battery cell that is provided in the housing and arranged in the compartment. The housing and the barrier are connected to each other to define the compartment.

ELECTRODE ASSEMBLY

Resumen de: US2025210803A1

An electrode assembly includes: a first current collector; a first composite material layer; a second current collector; a second composite material layer; and a separator. The first composite material layer is provided on the first current collector. The second composite material layer is provided on the second current collector. The separator is disposed between the first composite material layer and the second composite material layer. The second composite material layer includes a groove portion. The groove portion extends along a plane direction of the first composite material layer. A ventilation portion is formed at a position that is in contact with the groove portion.

POWER SUPPLY DEVICE

Resumen de: WO2025134875A1

This power supply device is provided with: a plurality of secondary battery cells each having a cylindrical outer can, each end surface of the cylinder serving as a cell end surface; a battery holder housing the plurality of secondary battery cells; an exterior case housing the battery holder; and a cooling part thermally coupled to a side surface of the battery holder. The side surface of the battery holder is curved along the outer shape of the outer can, and the cooling part is curved along the shape of the side surface of the battery holder. By thus placing the cooling part so as to follow the outer shape of the secondary battery cells positioned on the side surface of the battery holder, cooling can be efficiently performed due to an increase in contact area.

POWER SUPPLY DEVICE AND METHOD FOR MANUFACTURING SAME

Resumen de: WO2025134871A1

This power supply device comprises: a plurality of secondary battery cells each having a cell end surfaces with an electrode provided thereon; one or more battery blocks for accommodating the plurality of secondary battery cells; and an exterior case for accommodating the one or more battery blocks. Each battery block forms a cooling air path, through which cooling air flows, between the inner surface of the battery block and the surface of a cell intermediate region which is between end regions continuous with the cell end surfaces of each secondary battery cell. The exterior case forms an external opening that communicates with the cooling air path, and comprises an electrode waterproof part that is interposed between each battery block and the cell end surface of each secondary battery cell, and that waterproofs the electrodes with respect to the cooling air path.

BATTERY CAPACITY ESTIMATION DEVICE AND BATTERY CAPACITY ESTIMATION METHOD

Resumen de: WO2025133659A1

This battery capacity estimation device comprises: a battery voltage estimation unit 11 that measures or estimates the battery voltage of a secondary battery 1; a charge/discharge control unit 12 that controls charging and discharging of the secondary battery 1; a state-of-charge estimation unit 13 that estimates the state of charge (SOC) of the secondary battery 1; and a battery capacity estimation unit 14 that estimates the battery capacity. The charge/discharge control unit 11 controls charging and discharging of the secondary battery up to a start point by charging or discharging the secondary battery at a constant first current for a first time or longer, and after passing the start point, controls charging and discharging of the secondary battery by charging or discharging at a second current so that the SOC changes from the start point by a prescribed change margin or more, and controls charging or discharging of the secondary battery up to an end point by charging or discharging the secondary battery at the constant first current for a second time or longer. The state-of-charge estimation unit 13 acquires a start-point SOC indicating the SOC at the start point and uses the start-point SOC, the battery voltage at the start point, and the battery voltage at the end point as a basis for estimating an end-point SOC indicating the SOC at the end point. The battery capacity estimation unit 14 estimates the battery capacity on the basis of the SOC difference between the star

BATTERY AND BATTERY MANUFACTURING METHOD

Resumen de: WO2025134550A1

A battery according to the present disclosure comprises: a power generation element; and a current collector laminated on the power generation element. In a region where the current collector and the power generation element overlap when viewed along a lamination direction of the power generation element and the current collector, the ratio of a second thickness, which is the maximum thickness at an end portion of the current collector, to a first thickness, which is the thickness of a central portion of the current collector, is 101-200%.

LITHIUM-ION BATTERY

Resumen de: WO2025130412A1

The present invention relates to the technical field of batteries, and in particular to a lithium-ion battery. The lithium-ion battery comprises a positive electrode sheet and an electrolyte. The positive electrode sheet comprises a positive electrode current collector and a positive electrode active material layer located on one side surface or two side surfaces of the positive electrode current collector; the positive electrode active material layer comprises a positive electrode active material; W is the peak intensity ratio of (003) crystal plane to (104) crystal plane in the positive electrode active material; and X is the peak intensity ratio of (006) crystal plane to (104) crystal plane in the positive electrode active material. The electrolyte comprises a phosphate additive; and based on the total weight of the electrolyte, the weight content of the phosphate additive is dwt%. The lithium-ion battery meets the following relations: 0.033≤d/W≤0.4 and 0.67≤d/x≤6.5. The battery has the advantages of good high-temperature cycle performance, good storage performance and high safety performance.

BATTERY MODULE AND BATTERY PACK

Resumen de: WO2025130137A1

A battery module (10) and a battery pack (100). The battery module (10) comprises end plates (1), pressing strips (2), and battery cells (3). A plurality of battery cells (3) are sequentially arranged in a first direction to form a battery cell group (4); two end plates (1) respectively abut against two ends of the battery cell group (4); each pressing strip (2) comprises a pressing strip main body (21) and a connecting assembly (22), the pressing strip main body (21) extends in the first direction, and the connecting assembly (22) is connected to at least one end of the pressing strip main body (21) in the first direction; and the pressing strip (2) presses against the battery cell group (4), and the connecting assembly (22) movably abuts against the side of the end plate (1) distant from the battery cell group (4).

LASER MACHINING APPARATUS, ELECTRODE SHEET MACHINING DEVICE, AND ELECTRODE SHEET MACHINING METHOD

Resumen de: WO2025129945A1

A laser machining apparatus (100), comprising a laser (110), a beam splitting unit (120), an adjustment unit (130), and a focusing unit (140). The laser (110) generates a first laser beam (111), the beam splitting unit (120) can divide the first laser beam (111) into a plurality of second laser beams (121), and the second laser beams (121) are adjusted by means of a galvanometer system (131) and a polygon mirror system (132), and then focused on a machining plane by means of the focusing unit (140). The cooperation between the galvanometer system (131) and the polygon mirror system (132) can greatly improve the precision of control of the second laser beams (121) by the laser machining device (100), so that the position accuracy of the second laser beams (121) on the machining plane is greatly improved, and then the diameters of holes (310) obtained by machining the machining plane using each of the second laser beams (121) are relatively consistent. In addition, since a beam splitter (122) splits the first laser beam (111), the energy density of each of the second laser beams (121) is relatively consistent, the energy obtained at each machining position is also relatively balanced, and finally, the depths of the holes (310) in an electrode sheet (300) are also relatively consistent. The technical solution of the present application can effectively improve the consistency of the area and depth of laser drilling (310). The present invention also relates to an electrode sheet (

Apparatus and Method for Testing Battery by Estimating Degradation

Resumen de: US2025208215A1

A method for testing a battery rack including at least one battery pack by estimating state of health may include implementing a degraded battery simulation state using a relationship among internal resistance of the battery, current flowing through the battery, and amount of heat generated and performing a degradation prediction test in the degraded battery simulation state.

BATTERY MONITORING DEVICE

Resumen de: US2025208213A1

A battery monitoring device includes a wiring board having a portion of a wiring provided on a board surface, a circuit component surface-mounted on the board surface and connected to the wiring, and a connector that electrically connects the wiring board to at least a battery. The connector has a terminal connected to a mounting land which is part of the wiring provided on the board surface, and a connector case in which the terminal is provided. The wiring board is provided with a cutout portion recessed from a surrounding area on a part of a side surface, and at least a part of the connector case is disposed in the cutout portion.

BATTERY MANAGEMENT SYSTEM, MEMORY, DISPLAY METHOD, AND STORAGE MEDIUM INCLUDING DISPLAY PROGRAM

Resumen de: US2025208230A1

A battery management system includes an obtaining unit, an estimating unit, and a display. The obtaining unit obtains electrical data of a battery in an operating state of a monitoring unit that monitors the battery, and environmental data in a non-operating state. The electrical data includes a first SOC of the battery before transition from the operating state to the non-operating state and a second SOC of the battery after transition from the non-operating state to the operating state. The environmental data includes an outside temperature. The estimating unit estimates a charge/discharge state in the non-operating state based on the first SOC and the second SOC, estimates a temperature of the battery in the non-operating state based on the outside temperature, and estimates the degradation degree of the battery in the non-operating state based on the estimated charge and discharge state and the estimated temperature of the battery.

QUALITY INSPECTION DEVICE AND METHOD OF POUCH TYPE SECONDARY BATTERY CELLS

Resumen de: US2025208222A1

Provided is a quality inspection device and method for a pouch-type secondary battery cell, which inspects the quality of a plate, a bent portion, or a weld portion of a pouch-type secondary battery cell. An AC signal generating unit generates an AC signal. A magnetic field generating unit generates a magnetic field in accordance with the generated AC signal and induces a current to flow in a pouch-type secondary battery cell. At least one induced current detection sensors each detect the signal of the induced current flowing in the pouch-type secondary battery cell. A control/judgment unit compares the detected induced current signal with a value of a preset judgment range and judges the quality of the pouch-type secondary battery cell.

SECONDARY BATTERY CHARACTERISTIC ACQUISITION SYSTEM AND SECONDARY BATTERY CHARACTERISTIC ACQUISITION METHOD

Resumen de: US2025208219A1

A battery characteristic acquisition system includes a charge control unit, a measuring unit, a storage unit, and a characteristic curve generating unit. The charge control unit charges a battery. The measuring unit measures an OCV before the start of charging of the battery and a charged capacity charged from the start of charging to the completion of charging to full charge, and calculates an SOC at the start of charging by subtracting the measured charged capacity from the full charge capacity of the secondary battery. The storage unit stores the OCV and the SOC obtained from a plurality of times of measurement and calculation. The characteristic curve generating unit generates an SOC-OCV curve of the battery using a plurality of OCVs and remaining capacities.

METHOD OF MANUFACTURING A POWER STORAGE DEVICE, AND POWER STORAGE DEVICE

Resumen de: US2025210832A1

A method of manufacturing a power storage device, which has a battery, injection ports, a tubular member surrounding the injection ports, and a laminate film, includes a step of causing the laminate film to contact the tubular member and welding by heat pressing. At the tubular member, a first region including a surface that contacts the laminate film is structured by resin L, and a second region that is disposed further toward the injection ports side than the first region and that contacts the first region is structured by resin H. At the laminate film, a third region including a surface that contacts the tubular member is structured by resin lam. Melting points Tm or glass transition temperatures Tg of the resin L and the resin lam are lower than that of the resin H. A temperature of the heat pressing is greater than or equal to the melting point Tm or the glass transition temperature Tg of the resin L and the resin lam, and is less than the melting point Tm or the glass transition temperature Tg of the resin H.

Lithium Secondary Battery

Resumen de: US2025210798A1

A lithium secondary battery may include a battery can, an electrode assembly and an electrolyte received in the battery can, and a cap plate to seal the battery can. The battery can includes a first end portion and a second end portion opposite the first end portion. The lithium secondary battery is configured so at least a portion of the electrode assembly is ejected through the first end portion of the battery can when an internal pressure within the battery can is 21 kgf/cm2 or more. After the portion of the electrode assembly is ejected through the first end portion, a distance from an end portion of the electrode assembly located farthest away from the battery can to the second end portion of the battery can is greater than or equal to 1.25 times a distance between the first end portion and the second end portion of the battery can.

METHOD OF PRODUCING SECONDARY BATTERY, AND SECONDARY BATTERY

Resumen de: US2025210833A1

Production of an insufficiently sealed product is suppressed by sealing by welding a sealing material to a filling port of a secondary battery. A transparent resin film is used as the sealing material.

BATTERY CELL AND ELECTRODE ASSEMBLY

Resumen de: US2025210828A1

An embodiment of the present disclosure may provide a battery cell including an electrode assembly in which a first electrode including a first uncoated part, a second electrode including a second uncoated part, and a separator disposed between the first electrode and the second electrode are wound in a roll shape, and a cylindrical case including an opening with one side open, and configured to accommodate the electrode assembly inside through the opening, where the first uncoated part and the second uncoated part are disposed in a direction of the opening.

ELECTRICAL STORAGE SYSTEM WITH GAS VENTING ARRANGEMENT

Resumen de: US2025210802A1

An electrical storage system (ESS) comprising a plurality of battery packs arranged side-by-side, each of the battery packs being spaced from an adjacent battery pack such that the side surfaces of the adjacent battery packs form inter-battery pack gas channels and wherein each of the battery pack is provided with a side gas vent opening to one of the inter-battery pack gas channels.

LITHIUM SECONDARY BATTERY WITH RUPTURE NOTCH FOR EJECTING JELLYROLL ELECTRODE ASSEMBLY

Resumen de: US2025210799A1

The present disclosure relates to a battery including a battery can, an electrode assembly and an electrolyte received in the battery can, and a cap plate assembly to seal the battery can, a battery pack and a vehicle including the same. The battery can has a first end and a second end opposite to each other. When the electrode assembly is ejected through the first end of the battery can by an internal pressure, a distance from the end of the electrode assembly farthest away from the battery can to the second end of the battery can is 1.25 times or more as much as a distance between the first end portion and the second end portion of the battery can; and the ejected portion of the electrode assembly has a mass that is at least 25% of the total mass of the electrode assembly before the ejection.

A BINDER COMPOSITION, AN ELECTRODE, AND METHODS THEREOF

Resumen de: WO2025134134A1

The present disclosure provides a binder composition comprising: a fibrillating binder; and a non-fibrillating binder of Formula (I): (CH2-CH(R1))-(R2)n, wherein R1 is selected from H or C1-4 alkyl; and R2 is selected from C4-8 alpha-olefins or vinyl acetate. The present disclosure also provides an electrode composite comprising a. an active material; b. at least one conductive carbon; and the binder composition as disclosed herein. The present disclosure further relates to a process for preparing the electrode composite.

A DUAL-PASS COOLING SYSTEM FOR BATTERY PACK COOLING

Resumen de: WO2025134142A1

A dual-pass cooling system (10) comprises a dual-pass serpentine tube (120) including a thermal barrier (128) for cooling a batten'- pack is provided. The thermal barrier separates the tube into a first portion (120 A) and a second portion (120B), the first portion and the second portion configured to receive coolant liquid from a first manifold (112) and a second manifold (114). The first manifold and the second manifold receive the coolant liquid from a chiller unit (140). The thermal barrier helps in thermally isolating the coolant liquid flowing in the second portion from the coolant liquid flowing in the first portion. As a result, there is no thermal distribution between the coolant liquid flowing in the first portion and the coolant liquid flowing in the second portion of the tube.

BATTERY MODULE, AND BATTERY CELL LIQUID-COOLING METHOD

Nº publicación: WO2025131128A1 26/06/2025

Solicitante:

HUIZHOU EVE POWER CO LTD [CN]
EVE ENERGY CO LTD [CN]
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