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METHODS TO MODIFY PROPERTIES OF A PREVIOUSLY FORMED POLYMER ELECTROLYTE FILM AND PRODUCTS INCORPORATING SUCH FILM

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.

SELF-ASSEMBLED CAST POLYPROPYLENE (CPP) BASE FILM OF ALUMINUM-PLASTIC FILM FOR NEW ENERGY POUCH BATTERIES AND PREPARATION METHOD THEREOF

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.

BATTERY CELL AND BATTERY HAVING THE SAME, AND ELECTRICAL APPARATUS

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.

BATTERY CELL, BATTERY, AND ELECTRIC APPARATUS

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.

ELECTRODE ASSEMBLY, BATTERY, AND ELECTRIC DEVICE

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.

SECONDARY BATTERY AND PREPARATION METHOD THEREOF, AND ELECTRIC DEVICE

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.

ELECTROCHEMICAL APPARATUS AND ELECTRONIC DEVICE

Resumen de: WO2026044711A1

The present application provides an electrochemical apparatus and an electronic device. The electrochemical apparatus of the present application comprises a positive electrode sheet and an electrolyte, the positive electrode sheet containing carbon nanotube clusters, and the electrolyte comprising a compound represented by formula (I), and further comprising a second component, the second component comprising any one or both of a compound represented by formula (II) and a compound represented by formula (III). On the basis of the mass of the electrolyte, the content of the compound represented by formula I in the electrolyte in percentage by mass is A%, and the content of the second component in percentage by mass is C%, where A and C satisfy the conditions: 10≤(A+C)≤52 and 2≤A≤25. In the present application, the components and content of the components of the electrolyte in the electrochemical apparatus are controlled, so that the electrochemical apparatus can have good low-temperature discharge performance and low low-temperature impedance.

LITHIUM-ION SUPERCAPACITOR CELL AND FORMATION METHOD THEREFOR

Resumen de: WO2026045548A1

The present invention relates to the technical field of lithium-ion batteries, in particular to a lithium-ion supercapacitor cell and a formation method therefor. The negative/positive ratio of a lithium-ion supercapacitor is (1.1-2.2):1. The calculation formula for the negative/positive ratio is (AC×Ad×AL)/(Cc×Cd×CL). In the present invention, by means of a stepped low-current formation charging process, a uniform and stable SEI film is formed on a surface of an amorphous carbon negative electrode, and by means of increasing a formation cut-off voltage, the minimal potential of an anode reaches approximately 0.06 V at the end of the initial charging of a battery, thereby consuming some of irreversible active sites. Furthermore, due to the over-capacity design of the anode, the phenomenon of lithium plating on a surface of the anode can also be prevented when a battery cell is at a high cut-off voltage, thereby greatly improving the safety performance of the battery. In addition, the over-capacity anode also ensures the cycle life of the lithium-ion supercapacitor under high-rate charging and discharging.

SECONDARY BATTERY, MANUFACTURING METHOD FOR SECONDARY BATTERY, AND ELECTRICAL APPARATUS

Resumen de: WO2026045537A1

The present application relates to the technical field of energy storage. Specifically disclosed are a secondary battery, a manufacturing method for a secondary battery, and an electrical apparatus. The secondary battery comprises an electrode assembly, the electrode assembly comprising a first electrode sheet, a second electrode sheet, a separator and a filler. The first electrode sheet comprises a first current collector and a first active material layer, the second electrode sheet comprises a second current collector and a second active material layer, and the separator is arranged between the first active material layer and the second active material layer. The first active material layer is provided with recesses, each recess comprising a recess opening and a recess wall, and the other side of the separator facing the positions of the recess openings corresponding to the second active material layer. The filler comprises filling parts, the filling parts being located in the recesses, and the filling parts covering at least part of the recess walls. The filler can separate lithium dendrites precipitated in the recesses from the separator, so as to restrict the growth of the lithium dendrites in the recesses in a direction toward the separator, thereby reducing the likelihood that lithium dendrites pierce separators.

RECHARGEABLE LITHIUM-ION MICRO-BATTERY AND METHODS OF MAKING AND USING THE SAME

Resumen de: US20260066328A1

A cylindrical battery having a wound jelly roll configuration that includes an anode current collector having a first surface and an opposing second surface; at least one anode disposed on the first surface of the anode current collector; at least one Li metal film disposed on the first surface anode current collector, wherein the at least one Li metal film is spaced apart from the anode; a cathode current collector having a first surface and an opposing second surface; at least one cathode disposed on the first surface of the cathode current collector; and a first membrane separator positioned between the anode and the cathode.

BATTERY CELL PRESSURIZING DEVICE AND BATTERY CELL PRESSURIZING METHOD

Resumen de: US20260066332A1

A battery cell pressurizing device includes a battery cell arranger configured to arrange a battery cell, a battery cell pressurizer above the battery cell arranger, the battery cell pressurizer being configured to pressurize the battery cell, and an electrolyte injection port sealer above the battery cell pressurizer, the electrolyte injection port sealer being configured to seal an electrolyte injection port of the battery cell while the battery cell is pressurized by the battery cell pressurizer.

Separator and Secondary Battery

Resumen de: US20260066363A1

A separator for a secondary battery includes a porous substrate, an inorganic layer including a first inorganic particle on at least one surface of the porous substrate, and an aramid resin layer including an aramid resin and a second inorganic particle on the inorganic layer, wherein an average diameter D50 of a circle-equivalent particle of the second inorganic particle is less than 0.1 μm.

THIN GAUGE ALUMINUM-BASED CATHODES FOR LITHIUM-ION BATTERIES

Resumen de: US20260066309A1

Described are batteries and battery components including a cathode current collector comprising a 1xxx series aluminum alloy or an 8xxx series aluminum alloy. The cathode current collector can have a thickness of from 5 μm to 12 μm. In some examples, a cathode active material layer may be disposed over at least a portion of the cathode current collector. The cathode current collector may have both surfaces that are in contact with the active material layer being matte surfaces. Battery cells including the cathode current collector may retain a specific capacity above 90% of an initial specific capacity for up to 3000 cycles or more. Additionally, the battery cells including the cathode current collector may retain an energy density above 90% of an initial energy density for up to 3000 cycles or more.

ELECTRODE POSITION TRACKING SYSTEM

Resumen de: US20260066362A1

A systems and methods for tracking a position of an electrode. The system may include: a notching controller configured to store pitch information of a unit electrode and to acquire electrode coordinate information of the electrode in a roll-to-roll state during a notching process and a cell identification (ID) of the unit electrode; a calculator configured to calculate coordinates of the cell ID from the pitch information and the cell ID; a roll map generator configured to generate a roll map based on the electrode coordinate information transmitted from the notching controller; and a mapping part configured to compare the coordinates of the roll map with the coordinates of the cell ID to derive an electrode position of the electrode during the electrode manufacturing process from which the unit electrode originates.

METHOD OF MANUFACTURING BATTERY

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.

HEAT MANAGEMENT SYSTEM

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.

SLURRY COMPOSITION FOR NEGATIVE ELECTRODES FOR SECONDARY BATTERIES

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.

BATTERY ELECTRODE GRAPHITE DISPERSION

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.

CYLINDRICAL BATTERY AND BATTERY MODULE

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.

POWER STORAGE DEVICE

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.

BLADE BATTERY AND BATTERY PACK INCLUDING SAME

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.

SECONDARY BATTERY, BATTERY MODULE AND ELECTRONIC APPARATUS

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.

BATTERY CELL, BATTERY, ELECTRICAL APPARATUS, AND ENERGY STORAGE CABINET

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.

Molten Lithium Metal Battery Based on Ceramic Electrolyte Sheet

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.

NEGATIVE ELECTRODE MATERIAL, PREPARATION METHOD THEREFOR, AND USE THEREOF

Nº publicación: WO2026045528A1 05/03/2026

Solicitante:

CHINA FAW CO LTD [CN]
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Resumen de: WO2026045528A1

The present application relates to the field of batteries, and in particular to a negative electrode material, a preparation method therefor, and a use thereof. The negative electrode material comprises: a substrate and a modification material layer provided on the surface of the substrate, wherein the substrate comprises hard carbon and graphite covering the hard carbon; the chemical formula of a modification material in the modification material layer is MoOx-MoyN, wherein the value of x is 2-3, and the value of y is 1-2. Compared with a conventional graphite negative electrode material, the negative electrode material has good fast charging performance and long-cycle interfacial electrochemical stability.