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ELECTRODE ASSEMBLIES, AND PREPARATION METHODS THEREOF, AND RECHARGEABLE LITHIUM BATTERIES

Resumen de: US20260066460A1

Disclosed are an electrode assembly, a method of preparing the electrode assembly, and a rechargeable lithium battery including the electrode assembly. The electrode assembly includes an electrode current collector, an electrode active material layer on the electrode current collector, and a coating layer located on the electrode active material layer and integrated with the electrode active material layer. The coating layer includes polymer nanofibers. The polymer nanofibers include a fluorine-based polymer and a nitrile-based polymer as a polymer. A dielectric constant of the polymer is greater than or equal to about 0.06 pF/mm3, and the electrical conductivity of the polymer is in a range of about 3.0 μS/mm3 to about 50.0 μS/mm3.

NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

Resumen de: WO2026048748A1

This non-aqueous electrolyte secondary battery comprises: an electrode assembly (14) in which a positive electrode (11) and a negative electrode (12) are wound with a separator (13) therebetween; and an outer can for housing the electrode assembly (14). The negative electrode (12) has a negative electrode core (30) and a mixture layer (32) that is disposed on at least one surface of the negative electrode core (30) and contains an active material. The negative electrode (12) has a core-exposed portion (31) which does not have a mixture layer on both surfaces of the negative electrode core (30) at a negative electrode winding-starting end portion (12a) positioned on the inner peripheral side of a positive electrode winding-starting end (B1) of the positive electrode (11) and on a winding-starting side of the positive electrode winding-starting end (B1). A low-rigidity portion (40) having lower rigidity than other portions of the negative electrode core (30) is disposed in at least a portion of the core-exposed portion (31) in the winding direction.

NONAQUEOUS ALKALI METAL POWER STORAGE ELEMENT AND PRODUCTION METHOD THEREFOR

Resumen de: WO2026048805A1

A nonaqueous alkali metal power storage element (precursor) according to the present disclosure comprises a positive electrode (precursor), a negative electrode (precursor), a separator, an exterior material, and a nonaqueous electrolyte solution, wherein: the negative electrode (precursor) contains, as an active material, a material that absorbs and releases lithium ions; and the positive electrode (precursor) has a positive electrode active material layer that contains a positive electrode active material which absorbs and releases alkali metal ions. The nonaqueous alkali metal power storage element (precursor) contains an alkali metal carbonate in the positive electrode active material layer, in an arbitrary intermediate layer between the positive electrode active material layer and the separator, or in both. The nonaqueous electrolyte solution further contains a carbonate decomposition promoter. The oxidation commencement potential of the carbonate decomposition promoter is not less than 3.8 V (vsLi/Li+) and not more than 4.7 V.

SECONDARY BATTERY

Resumen de: WO2026048847A1

A secondary battery comprises: a positive electrode; a negative electrode; a separator that is disposed between the positive electrode and the negative electrode; and a non-aqueous electrolyte. The positive electrode includes a positive electrode current collector, and a positive electrode mixture layer that is supported by the positive electrode current collector. The separator includes a first region that faces an end portion of the positive electrode mixture layer, and a second region that faces a central portion of the positive electrode mixture layer. At least part of the first region is a first thick film region in which the thickness of the separator is greater than in the second region.

DOT-ARRAY COATED BATTERY SEPARATOR AND PREPARATION METHOD THEREFOR, AND SECONDARY BATTERY

Resumen de: WO2026045991A1

A dot-array coated battery separator, comprising a separator substrate and a polymer coating applied to the surface of at least one side of the separator substrate. The polymer coating comprises a plurality of crater-like dot-shaped coatings, each dot-shaped coating forming a frustoconical protruding structure having a raised periphery and a central depression. The dot-shaped coatings are arranged on the surface of the separator substrate to form a dot array. The crater structure of the dot-shaped coatings on the dot-array coated battery separator effectively reduces polymer accumulation at the coating points, and correspondingly lessens the impact of hot pressing on separator performance. As a result, the battery separator has good ion permeability, wettability, and gas permeability while satisfying bonding-strength requirements with the battery electrodes, thereby achieving a good performance balance. Further provided are a preparation method for the dot-array coated battery separator and a secondary battery comprising the dot-array coated battery separator.

COMPOSITE MATERIAL, HEAT ABSORBING MEMBER, BATTERY ASSEMBLY AND ELECTRIC DEVICE

Resumen de: WO2026046111A1

The present application provides a composite material, a heat absorbing member, a battery assembly, and an electric device. The composite material comprises a polymer framework, an inorganic additive, and a phase change component. The inorganic additive comprises at least one of a hydrophilic aerogel and kaolin. In the composite material of the present application, the phase change component can improve the heat absorption performance of the composite material, and the inorganic additive can improve the thermal insulation performance of the composite material, such that the composite material has excellent heat absorption and thermal insulation effects, facilitating the use of the composite material in a battery assembly, and improving the use safety of battery cells.

ELECTRODE SHEET, BATTERY CELL UNIT, BATTERY, AND ELECTRIC DEVICE

Resumen de: WO2026046043A1

An electrode sheet, a battery cell unit, a battery, and an electric device. The electrode sheet comprises a current collector and an active material layer; the current collector comprises a conductive polymer film, and the conductive polymer film is configured to be connected to a polymer material; and the active material layer is provided on at least one surface of the current collector. The electrode sheet has good sealing reliability.

ELECTROLYTE AND BATTERY

Resumen de: WO2026046041A1

An electrolyte and a battery. The electrolyte comprises a fluorine‑containing oxalic acid lithium salt and a functional additive; the functional additive has a structure as represented by formula (1), wherein R1 is selected from at least one of a linear alkyl group having 1-6 carbon atoms and a substituted or unsubstituted aromatic group; and R2 and R3 are each independently selected from at least one of a halogen atom and a substituted or unsubstituted alkyl group having 1-10 carbon atoms. The electrolyte can ensure that the battery meets high energy density requirements and fast charging requirements, and improve the cycle stability of the battery.

SECONDARY BATTERY AND ELECTRONIC DEVICE

Resumen de: WO2026044653A1

The present application provides a secondary battery and an electronic device. The secondary battery comprises an electrolyte, which comprises a first organic compound and a second organic compound. The first organic compound comprises fluoroethylene carbonate, and the second organic compound comprises a compound of formula I. In the compound of formula I, R is selected from a C2 to C6 alkyl group which is substituted with fluorine or unsubstituted, and a C6 to C12 aryl group which is substituted with fluorine or unsubstituted. Based on the total mass of the electrolyte, the mass percentage of the first organic compound is A, and the mass percentage of the second organic compound is B, wherein 2%≤A≤30%, and 5%≤B≤85%. By adjusting and controlling the electrolyte to comprise the first organic compound and the second organic compound, as well as the types and mass percentages of the first and second organic compounds within the scope of the present application, the secondary battery can have both good cycling performance and low-temperature discharge performance.

SECONDARY BATTERY AND ELECTRONIC DEVICE

Resumen de: WO2026044639A1

The present application provides a secondary battery and an electronic device. An electrolyte comprises a salt consisting of an anion and a cation as shown in formula I and a compound of formula II. M1 is selected from element B or element Al. R1, R2, R3, and R4 are each independently selected from C1-C8 alkyl in which at least some hydrogen atoms are substituted by fluorine, C6-C20 aryl in which at least some hydrogen atoms are substituted by fluorine, C7-C22 aralkyl in which at least some hydrogen atoms are substituted by fluorine, C7-C20 alkaryl in which at least some hydrogen atoms are substituted by fluorine, C7-C20 ether bond-containing alkaryl in which at least some hydrogen atoms are substituted by fluorine, or C2-C10 ether bond-containing alkyl in which at least some hydrogen atoms are substituted by fluorine. R is selected from fluorine-substituted or unsubstituted C1-C5 alkyl, or amino substituted by C1-C5 alkyl. Rf is selected from a fluorine atom or trifluoromethyl. The cation comprises one of Li+, Na+, K+, Mg2+, Ca2+, and Zn2+. The electrolyte satisfies the described features, and can improve the cycle performance and the low-temperature discharge performance of the secondary battery.

INTEGRATED BATTERY FRAME AND BATTERY

Resumen de: WO2026044500A1

An integrated battery frame (200) and a battery. The integrated battery frame (200) comprises: a metal frame (1), the metal frame (1) comprising a rectangular frame having an accommodating space, and a terminal post mounting hole (15), an explosion-proof valve hole (16), and a liquid injection hole (17) disposed on the rectangular frame; a terminal post (2), the terminal post (2) comprising a substrate (21) arranged in the metal frame, and a first end (22) arranged on a side of the substrate (21) and extending to the exterior of the metal frame via the terminal post mounting hole (15); a mounting assembly (3), the mounting assembly (3) fixing and sealing the terminal post (2) at the terminal post mounting hole (15) of the metal frame; an explosion-proof valve (4); and a sealing assembly (5). Compared with conventional battery cover plate assemblies, the integrated battery frame (200), when applied to an ultra-thin battery, not only improves the structural strength and safety of the battery, but also optimizes space utilization, simplifies the assembly process, and enhances the energy density of the battery.

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.

ANODE, ALL-SOLID-STATE BATTERY INCLUDING THE SAME, AND METHOD OF PREPARING THE ALL-SOLID-STATE BATTERY

Resumen de: US20260066310A1

An anode, an all-solid-state battery including the anode, and a method of preparing the all-solid-state battery. The anode includes a three-dimensional (3D) porous current collector including a plurality of voids having a depth H and a radius R, the voids spaced apart from one another by interval P, and an insulator layer disposed on the interval between the plurality of voids; and an interlayer disposed on the 3D porous current collector. The plurality of voids provide provide space for lithium during charge, and provide lithium during discharge, where such voids are absent of lithium before charging or after complete discharge. The plurality of voids satisfy Expression 1:P≤H≤5⁢0⁢P.Expression⁢1

SECONDARY BATTERY AND MANUFACTURING METHOD THEREOF

Resumen de: US20260066311A1

A secondary battery includes a can-type case accommodating an electrode assembly, an electrolyte inlet on a first end of the case, and configured to allow an electrolyte to be injected therethrough, a first thin film cover sealing the electrolyte inlet, and having a through-hole, and a second thin film cover sealing the electrolyte inlet and the through-hole, and located on the first thin film cover.

PRODUCTION OF ELECTRODE ASSEMBLIES

Resumen de: US20260066354A1

Production of electrodes, electrode assemblies, electrode stacks, and batteries, is disclosed herein comprising merging webs, associated devices, methods, and control such as relating to battery manufacturing. The batteries can comprise electrochemical active material. The webs can comprise weakened tear features for delineation components of the electrodes, electrode assemblies, electrode stack, and for the batteries.

ANODE FOR SECONDARY BATTERY, MANUFACTURING METHOD THEREOF, AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME

Resumen de: US20260066307A1

An anode for a secondary battery includes an anode current collector, an anode mixture layer disposed on at least one surface of the anode current collector and including an anode active material and an anode binder, and at least one gap that is open on a surface of the anode mixture layer and extends toward the anode current collector. An angle (θ) between the gap and a surface of the anode current collector is 70° to 110°. A method of manufacturing an anode for a secondary battery includes coating by applying an anode slurry containing an anode active material, a binder, and a magnetic material to at least one surface of an anode current collector, recovering the magnetic material contained in the anode slurry using a magnet spaced apart on the anode slurry, and drying the anode slurry and manufacturing an anode mixture layer.

POWER STORAGE DEVICE

Resumen de: WO2026048657A1

This power storage device comprises a first power storage element and a second power storage element. The first power storage element is provided with: a first electrode body in which a positive electrode plate and a negative electrode plate are layered; a first electrolyte which comprises a non-aqueous potassium-ion electrolyte or a non-aqueous sodium-ion electrolyte; a first rectangular container which accommodates the first electrode body and the first electrolyte and which is electrically connected to the negative electrode plate of the first electrode body; and a positive electrode terminal which is disposed outside the first rectangular container in a state of being insulated from the first rectangular container and which is electrically connected to the positive electrode plate of the first electrode body. The second power storage element is provided with: a second electrode body in which a positive electrode plate and a negative electrode plate are layered; a second electrolyte which comprises a non-aqueous potassium-ion electrolyte or a non-aqueous sodium-ion electrolyte; a second rectangular container which accommodates the second electrode body and the second electrolyte and which is electrically connected to the positive electrode plate of the second electrode body; and a negative electrode terminal which is disposed outside the second rectangular container in a state of being insulated from the second rectangular container and which is electrically connected to t

POWER STORAGE ELEMENT

Resumen de: WO2026048655A1

A power storage element comprises: an electrode body in which a positive electrode plate in which a positive electrode active material layer is formed on a positive electrode current collector foil, and a negative electrode plate in which a negative electrode active material layer is formed on a negative electrode current collector foil are laminated; a potassium ion nonaqueous electrolyte; and a rectangular container that accommodates the electrode body and the potassium ion nonaqueous electrolyte. The negative electrode current collector foil is formed from aluminum or an aluminum alloy.

POWER STORAGE DEVICE

Resumen de: WO2026048658A1

This power storage device comprises a first power storage element and a second power storage element, wherein: the first power storage element comprises a first electrode body that is obtained by stacking a positive electrode plate and a negative electrode plate, a first container that accommodates the first electrode body and that is electrically connected to the negative electrode plate of the first electrode body, and a positive electrode terminal that is disposed outside the first container in a state of being insulated from the first container and is electrically connected to the positive electrode plate of the first electrode body; the second power storage element comprises a second electrode body that is obtained by stacking a positive electrode plate and a negative electrode plate, a second container that accommodates the second electrode body and that is electrically connected to the positive electrode plate of the second electrode body, and a negative electrode terminal that is disposed outside the second container in a state of being insulated from the second container and is electrically connected to the negative electrode plate of the second electrode body; the first container and the second container are electrically connected to each other; and the power storage device includes a first balancer circuit that is connected to a location on either the first container or the second container and the positive electrode terminal, and a second balancer circuit that is

BATTERY CELL TAPE-WRAPPING DEVICE AND BATTERY CELL TAPE-WRAPPING METHOD

Resumen de: WO2026045891A1

A battery cell tape-wrapping device and a battery cell tape-wrapping method. The battery cell tape-wrapping device comprises a tape folding mechanism (1) and a tape pressing mechanism (2). The tape folding mechanism (1) comprises a tape-folding driving assembly (11) and a tape folding assembly (12), wherein the tape folding assembly (12) is provided with a tape folding hole (1211); the hole wall of the tape folding hole (1211) comprises a tape folding hole wall (12111), the tape folding hole wall (12111) being inclined towards a central hole of a battery cell (20) from the side thereof close to an end face of the battery cell (20) to the side thereof away from the end face of the battery cell (20); and the tape-folding driving assembly (11) can drive the tape folding assembly (12) to move towards the end face of the battery cell (20), such that the hole wall of the tape folding hole (1211) folds an adhesive tape (30), which extends beyond the end face of the battery cell (20), towards the central hole of the battery cell (20). The tape pressing mechanism (2) comprises a tape-pressing driving assembly (21) and a tape pressing assembly (22), wherein the tape-pressing driving assembly (21) can drive the tape pressing assembly (22) to move towards the end face of the battery cell (20), such that the tape pressing assembly (22) passes through the tape folding hole (1211) to press the folded adhesive tape (30) against the end face of the battery cell (20).

BATTERY SIGNAL ACQUISITION DEVICE AND BATTERY MODULE

Resumen de: WO2026045056A1

The present application discloses a battery signal acquisition device and a battery module. The battery signal acquisition device comprises a mounting seat, a BMS, and wire harnesses, and further comprises a pin header assembly. The pin header assembly comprises a pin header base and pin headers. One of the mounting seat and the pin header base is provided with positioning rods, and the other of the mounting seat and the pin header base is provided with positioning holes. The positioning rods are inserted into the positioning holes. A gap is provided between the outer wall of each positioning rod and the inner wall of the corresponding positioning hole. The pin headers are arranged on the pin header base. The pin headers are configured to be simultaneously electrically connected to the BMS and the wire harnesses.

FULL-TAB FLATTENING FIXTURE

Resumen de: WO2026045037A1

The present application provides a full-tab flattening fixture. The full-tab flattening fixture comprises mounting bases, pressing plates, and a reflector; the mounting bases are arranged in a pair, and two mounting bases in the pair are spaced apart in a first direction; the pressing plates are made of a transparent material; the ends of the two mounting bases facing each other are respectively provided with the pressing plates; the pressing plates are used for abutting against a battery cell and flattening a full tab of the battery cell; at least one of the mounting bases is provided with the reflector; the reflector is arranged on the side of the pressing plate away from the other mounting base, and a reflective surface of the reflector is arranged to face the pressing plate.

SEPARATOR, SECONDARY BATTERY AND ELECTRIC DEVICE

Resumen de: WO2026045851A1

Disclosed are a separator, a secondary battery and an electric device. The separator comprises: a substrate and a coating, wherein the coating is formed on at least one side of the substrate, and comprises acrylate polymer particles. In a three-dimensional imaging spectrogram, the value of an effective abscissa in a scan spectrum across the centers of the acrylate polymer particles is 5-150 um. The separator can be bonded to an electrode sheet by means of cold pressing, and the bonding force between the electrode sheet and the separator is suitable, thereby improving the cycle performance of a battery.

BATTERY AND BATTERY PROCESSING TECHNOLOGY THEREFOR

Resumen de: WO2026044488A1

The present application relates to the technical field of batteries, and in particular to a battery and a battery processing technology. The battery comprises: a case, comprising a cell frame having an accommodating space and two case covers, wherein a pole mounting hole, an electrolyte injection hole, and an explosion-proof valve hole are formed on the cell frame; an electrode core assembly, arranged in the accommodating space of the cell frame, wherein the electrode core assembly comprises an electrode core provided with a positive electrode tab and a negative electrode tab, an insulating film sleeved on the outer side of the electrode core, a spacer ring arranged between the tab side of the electrode core and the cell frame, and two side plates arranged between the opposite side of the electrode core and the cell frame; a pole assembly, arranged at the pole mounting hole, wherein the pole assembly comprises a pole, a first sealing ring sleeved on the pole, an outer insulating member and an inner insulating member which are arranged on the inner and outer sides of the pole mounting hole, and an outer connecting member arranged on the outer insulating member and fixed to the pole by welding; an explosion-proof valve, arranged at the explosion-proof valve hole; and a blocking member, sealing the electrolyte injection hole on the cell frame.

HEAT EXCHANGE ASSEMBLY, BATTERY DEVICE, ELECTRIC APPARATUS, AND ENERGY STORAGE APPARATUS

Nº publicación: WO2026044464A1 05/03/2026

Solicitante:

CONTEMPORARY AMPEREX TECH CO LIMITED [CN]
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Resumen de: WO2026044464A1

Embodiments of the present disclosure provide a heat exchange assembly, a battery device, an electric apparatus, and an energy storage apparatus. The battery device comprises a box assembly, a battery cell assembly, and the heat exchange assembly. The box assembly is internally provided with a first accommodating cavity. The battery cell assembly is arranged in the first accommodating cavity. The heat exchange assembly is arranged in the box assembly. The heat exchange assembly comprises at least two flexible members. The at least two flexible members are stacked, at least one medium flow channel is formed between the flexible members, the at least one medium flow channel is used for allowing a heat exchange medium to flow, and the heat exchange medium is used for exchanging heat with the battery cell assembly.