Resumen de: US20260066506A1
An insulation member includes an insulating material shaped into a volumetric shape, and interior space inside the volumetric shape, wherein the volumetric shape does not cover a protection circuit module on a case of a battery pack, the volumetric shape covering a polarity pin electrically connected to the battery pack and exposed to an outside of the case.
Resumen de: US20260068032A1
Disclosed are a printed circuit board, a battery pack, and a method of manufacturing a printed circuit board. The printed circuit board may include a substrate, a large current stage part disposed in a mounting area of the substrate, and a coating layer including phase change materials (PCMs) and covering the large current stage part.
Resumen de: US20260066450A1
A cover assembly of a battery cell, comprises a cover plate provided with a first through hole, a fixing member connected to the cover plate and provided with a second through hole, a breathable film connected to the fixing member, and a support filled in the second through hole, connected to the fixing member, and used for supporting the breathable film and allowing gas to pass through the breathable film. The first through hole comprises an accommodation section and an extension section extending from the accommodation section. A diameter of the accommodation section is greater than a diameter of the extension section. The second through hole is configured to be in gas communication with the first through hole. The breathable film is used for covering the second through hole. The fixing member and the support are at least partially accommodated in the accommodation section.
Resumen de: US20260066403A1
Disclosed is a self-assembled cast polypropylene (CPP) base film of an aluminum-plastic film for new energy pouch batteries and a preparation method thereof. The base film comprises a self-assembled heat sealing layer, a support layer and a composite layer. The preparation process includes charging the raw materials of three layers into a three-layer co-extrusion casting machine and setting the relevant parameters for preparation, then performing a corona treatment. The present disclosure utilizes an organic hybrid micro-nano thermal conductive material to induce the heat sealing layer to produce a self-assembly function in a high temperature environment after heat sealing, thereby effectively preventing the pouch batteries from short circuit or explosion in a high temperature environment.
Resumen de: US20260066448A1
A battery cell includes: a case including a mounting wall; an electrode assembly disposed within the case; an explosion-proof valve disposed on the mounting wall; and a gas guide portion including a gas guide groove formed in the mounting wall, the gas guide groove being configured to guide gas generated by the electrode assembly toward the explosion-proof valve.
Resumen de: US20260066497A1
A battery cell, a battery, and an electric apparatus. The battery cell includes: an electrode assembly, including a body portion and a first tab. A first size L1 of the body portion in a length direction thereof is greater than a second size L2 of the body portion in a width direction thereof. The first tab is located on at least one end of the body portion in the width direction. The first tab has a third size L3 in the length direction. The first size L1, the second size L2, and the third size L3 satisfy 0.5L2≥L3≥L1.
Resumen de: US20260063361A1
A method of the present disclosure of manufacturing a battery includes roller-conveying a stack such that a conveyance direction of the stack that has been subjected to heating to a temperature of 120° C. or more is changed by 45° or more along a direction changing roller, the stack including a base material layer and an electrode active material layer. Further, in the method of the present disclosure, a temperature difference between the stack after the heating and the direction changing roller is 80° C. or less.
Resumen de: US20260063199A1
A heat management system includes: an oil circuit where oil circulates; an LT circuit where cooling water circulates; an LT radiator provided in the LT circuit, and an oil cooler that performs heat exchange between the oil and the cooling water. The oil circuit causes the oil to circulate to a secondary battery and a transaxle that reduces a rotation speed of a motor.
Resumen de: US20260062564A1
There is provided a slurry composition for a negative electrode of a secondary battery suitable for producing a battery such as a lithium ion battery and an electrode, which has high stability and is capable of forming a negative electrode having a low resistance value when formed into an electrode, even when the slurry composition for a negative electrode of a secondary battery uses carbon nanotubes. A slurry composition for a negative electrode of a secondary battery according to the present disclosure includes at least carbon nanotubes, a conductive material, a negative electrode active material, a dispersant, and a binder component. The dispersant includes carboxymethylcellulose having a mass average molecular weight of 300000 or less or a metal salt thereof, and carboxymethylcellulose having a mass average molecular weight of 1000000 to 3000000 or a metal salt thereof.
Resumen de: US20260062563A1
Provided is a graphite dispersion for a battery electrode, which is suitable for production of a battery electrode of a lithium ion battery or the like. The graphite dispersion for a battery electrode of the present disclosure includes at least graphite particles having an average particle size of 5 to 50 μm, a dispersing agent, and water.
Resumen de: US20260066504A1
Provided is a cylindrical battery including: a shaft core; a set of wound electrodes including an electrode stack wound on the shaft core; an exterior member surrounding the set of wound electrodes; a cap disposed at one axial end of the shaft core and electrically connected to one of the positive and negative electrodes; and an insulating member disposed between the exterior member and the cap, the cap having an outer diameter that is larger than the inner diameter of the exterior member and smaller than the outer diameter of the exterior member, the insulating member having an outer diameter larger than the outer diameter of the cap, the insulating member having a protrusion that is located more inside in the radial direction of the set of wound electrodes than the inner surface of the exterior member and protrudes toward the set of wound electrodes.
Resumen de: US20260061727A1
Methods of modifying a property of a prefabricated film are provided. The prefabricated film is exposed to a solvent to modify a property of the prefabricated film to provide a modified film. In some embodiments the solvent comprises a plasticizer. In some embodiments, the property comprises ionic conductivity. In some embodiments, the solvent is part of a solution comprising a reactive compound. In some embodiments, the reactive compound comprises an alkali metal salt.
Resumen de: US20260066473A1
An electrode assembly, a battery, and an electric device. The electrode assembly includes a first electrode, a second electrode, a first separator, and a second separator. One of the first separator and the second separator is disposed between the first electrode and the second electrode. The other of the first separator and the second separator is disposed on a side that is of the first electrode or the second electrode and that faces away from the first separator. One of the first separator and the second separator does not include a porous coating. The other of the first separator and the second separator includes a porous coating. The thickness of the porous coating is 0.5 μm to 8 μm. The electrode assembly in the present application includes a specific first separator and a specific second separator, which can effectively improve cycling performance of the battery.
Resumen de: US20260066468A1
A secondary battery, including a positive electrode sheet, a negative electrode sheet, and a separator. The separator includes a base membrane and a coating arranged on at least one surface of the base membrane; the coating includes a composite polymer and a binder, and the composite polymer includes a first polymer for an inner core layer and a second polymer for a cladding layer arranged on the surface of the inner core layer; the peel strength between the separator and the positive electrode sheet is 1-5 N/m, and the thermal shrinkage rate of the separator in MD and TD directions is less than 5% at 130° C. for 0.5 h.
Resumen de: US20260066487A1
Provided are a blade battery and a battery pack including the same. The blade battery includes: at least one positive plate, with a first tab and a second tab respectively disposed at two adjacent edges; a plurality of negative electrode plates, each having a third tab and a fourth tab respectively disposed at two adjacent edges, each of two opposite sides of each positive electrode plate being covered by one negative electrode plate, the first tab and the third tab being located at two opposite sides of the blade battery, and the second tab and the fourth tab being located at two opposite sides of the blade battery, respectively; a positive cover plate connected to the first tab and the second tab to form a positive electrode; and a negative cover plate connected to the third tab and the fourth tab to form a negative electrode.
Resumen de: US20260066358A1
A secondary battery, a battery module, and an electronic apparatus are provided. The secondary battery includes a casing and a terminal assembly. The casing includes an end wall and a side wall surrounding the end wall, and an axis of the casing is a first axis. The electrode assembly accommodated in the casing includes a positive terminal sheet, a negative terminal sheet, and a separator stacked and wound to form a wound structure. A number of turns of the negative terminal sheet is greater than 40 turns, and an axis of the wound structure is a second axis. When a state of charge (SOC) of the secondary battery is less than 5%, the second axis is located in a cylindrical region with the first axis as the axis and a diameter d1 of φ0.6 mm.
Resumen de: US20260066426A1
A power storage device includes a first power storage stack including a plurality of power storage cells disposed in a first direction, a second power storage stack including a plurality of power storage cells and facing the first power storage stack in a second direction, an upper wall covering the first power storage stack and the second power storage stack, and a reinforcing member provided on the upper wall. The upper wall includes a top portion located above and between the first power storage stack and the second power storage stack. The reinforcing member is provided on the top portion.
Resumen de: US20260066319A1
A fuel cell system includes a fuel cell, and a battery that stores power output from the fuel cell, and has a first operation mode in which power output from the fuel cell is extracted to the outside, and a second operation mode including a discharge mode in which power output from the battery is extracted to the outside. A control method for a fuel cell system includes switching between the first operation mode and the second operation mode based on target power of the fuel cell.
Resumen de: US20260066297A1
A negative electrode raw material may be suitable for a nonaqueous secondary battery, the negative electrode material including a graphite. The negative electrode material is configured such that, when a mercury intrusion volume and a mercury extrusion volume, determined by mercury intrusion, are defined as A and B, respectively, the value of formula (1) is 45% or higher:B/A=100(%).(1)
Resumen de: US20260066339A1
A solid electrolyte material configured to suppress a decrease in ion conductivity, the solid electrolyte material comprising a polymer electrolyte, an inorganic filler and succinonitrile, the polymer electrolyte comprises an anionic polymer.
Resumen de: US20260066429A1
A battery pack including: a battery unit; a casing housing the battery unit and having a columnar shape; an external connection terminal exposed at an outer surface of the casing; and a support structure fixed to the casing. The support structure includes projects outward in a longitudinal direction of the casing from at least one end surface of the casing in the longitudinal direction, and includes a ring portion located at least one end of the battery pack in a longitudinal direction of the battery pack and oriented perpendicularly to the longitudinal direction of the casing.
Resumen de: US20260066435A1
An electricity storage apparatus according to the present disclosure includes a plurality of battery modules and a rack that accommodates the battery modules. The rack has a plurality of support plates that supports the battery modules. A bottom surface of each of the battery modules and a main surface of each of the support plates are fastened to each other. Each of the support plates is joined, via a bracket fastened on the main surface of the support plate, to another of the support plates. With such configuration, the electricity storage apparatus according to the present disclosure enables the accommodated battery modules to be sufficiently fixed even when a storage battery vibrates due to earthquake, transportation, and the like. As a result, the electricity storage apparatus according to the present disclosure enables the quake resistance to be improved.
Resumen de: US20260066490A1
A battery cell, a battery, an electrical apparatus, and an energy storage cabinet are disclosed. The battery cell includes a shell, multiple pole groups, and multiple electrode terminals. The shell has a wall portion, and the pole groups are received in the shell and arranged along a first direction. Each pole group includes a main body group and two tab groups, the two tab groups being spaced apart along the first direction on one side of the main body group in a second direction and having opposite polarities. The electrode terminals are disposed on the wall portion and spaced apart along the first direction. Two tab groups adjacent in the first direction from two neighboring pole groups share one electrode terminal, while the two farthest tab groups are connected to two respective electrode terminals. This configuration reduces the number of electrode terminals, optimizes production rhythm, and improves manufacturing efficiency.
Resumen de: US20260066333A1
A molten lithium metal battery based on a ceramic electrolyte sheet, comprising: a casing in the shape of the Chinese character “” and a ceramic electrolyte sheet, wherein the ceramic electrolyte sheet divides said casing into an upper part and a lower part, the upper part is a negative electrode chamber, the lower part is a positive electrode chamber, a positive electrode material is contained in the positive electrode chamber, and a lithium recess is formed in the negative electrode chamber; gas guide metal tubes, wherein the gas guide metal tubes are connected to and communicated with said casing, and openings of the air guide metal tubes are higher than the bottom surface of the ceramic electrolyte sheet; an upper cover and a negative electrode current collector, wherein the negative electrode current collector passes through the upper cover and is led out from the upper cover, the negative electrode current collector and the upper cover are sealed together by means of an insulating sealing material, the upper cover is arranged at the top of said casing and seals said casing, a negative electrode material is contained in the lithium recess, and a seal is formed between the lithium recess and said casing; and a bottom cover, wherein the bottom cover is connected to the bottom end of said casing.
Nº publicación: US20260066306A1 05/03/2026
Solicitante:
CONTEMPORARY AMPEREX TECH CO LIMITED [CN]
CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Resumen de: US20260066306A1
This application provides a negative electrode and a preparation method therefor, a battery cell containing the same, a battery, and an electric apparatus, where the negative electrode includes a negative electrode current collector and a coating disposed on at least one surface of the negative electrode current collector, the coating includes a flexible carbon material, the flexible carbon material includes micropores with a pore diameter less than or equal to 0.8 nm, a pore volume of the micropores with a pore diameter less than or equal to 0.8 nm is denoted as Vmic, a pore volume of the flexible carbon material is denoted as Vtotal, both in units of cm3/g, and Vmic:Vtotal≥65:100.