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COMPOSITIONS AND METHODS FOR GEL ELECTROLYTE BATTERIES

Resumen de: WO2025207578A1

The present disclosure provides compositions and methods for improving metal ion battery performance. In some aspects, the present disclosure provides an electrolyte comprising a fluorosurfactant additive that is effective to improve the safety, longevity, and performance of a metal ion battery. In some embodiments, the additives comprise N-isopropylacrylamide oligomers attached to a terminal group with the formula C6FBCH2CH2S-(N-isopropylacrylamide)n-H, wherein n is an average value representing a distribution of different chain lengths.

NEGATIVE ELECTRODE FOR ALL-SOLID-STATE BATTERY AND ALL-SOLID-STATE BATTERY INCLUDING SAME

Resumen de: WO2025206467A1

The present invention relates to a negative electrode for an all-solid-state battery and an all-solid-state battery including same. The negative electrode for an all-solid-state battery includes: a current collector; and a negative electrode coating layer formed on the current collector and including a binder, a metal, and a carbon-based material, wherein the negative electrode coating layer includes a first region positioned on the current collector and a second region continuously or discontinuously positioned along an edge of the current collector, and the binder is contained at a higher content in the second region than in the first region.

SHEET FOR PREVENTING THERMAL RUNAWAY OF BATTERY, AND BATTERY CELL ASSEMBLY COMPRISING SAME

Resumen de: WO2025206581A1

The present invention relates to a sheet (100) for preventing thermal runaway of a battery, comprising a flame retardant composite sheet (110), wherein the flame retardant composite sheet (110) has an upper surface and a lower surface and includes a fiber reinforced core material and silica, and is manufactured by impregnating the fiber reinforced core material with an impregnation solution containing silica.

ALL-SOLID-STATE BATTERY

Resumen de: WO2025204634A1

This all-solid-state battery (10) is provided with: a positive electrode (1); a negative electrode (2); and a solid electrolyte layer (3) disposed between the positive electrode (1) and the negative electrode (2). The solid electrolyte layer (3) contains a solid electrolyte having a γ－Ｌｉ３ＰＯ４ structure. The solid electrolyte layer (3) has a cobalt-containing region containing cobalt. The cobalt-containing region does not have a cobalt-rich region (31) continuously connecting the positive electrode (1) and the negative electrode (2). The cobalt-rich region (31) has a cobalt content of 1 atm % or more.

NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

Resumen de: WO2025205120A1

This non-aqueous electrolyte secondary battery comprises: an electrode body including a positive electrode and a negative electrode; and a non-aqueous electrolyte. The non-aqueous electrolyte secondary battery has a positive electrode current collector and a positive electrode mixture layer formed on a surface of the positive electrode current collector. The negative electrode has a negative electrode current collector and a negative electrode mixture layer formed on a surface of the negative electrode current collector. The positive electrode mixture layer contains a positive electrode active material. A carbonaceous coating containing one or more elements selected from the group consisting of alkali metals other than Li and alkaline earth metals is formed on a surface of the positive electrode active material, and the negative electrode mixture layer contains a negative electrode active material containing a silicon-containing material and a silicate compound.

ELECTRODE SHEET AND PREPARATION METHOD THEREFOR, AND LITHIUM-IRON-PHOSPHATE POUCH CELL

Resumen de: WO2025200458A1

An electrode sheet and a preparation method therefor, and a lithium-iron-phosphate pouch cell. The electrode sheet comprises a current collector, and further comprises a first membrane and a second membrane that are sequentially grown on the current collector from inside to outside, wherein the first membrane is arranged between the second membrane and the current collector, and the second membrane is in indirect contact with the current collector.

SECONDARY BATTERY AND ELECTRONIC DEVICE

Resumen de: WO2025201022A1

Disclosed in the present application are a secondary battery and an electronic device. The secondary battery comprises a packaging bag, an electrode assembly, a first tab, a first insulating adhesive tape and a second insulating adhesive tape, wherein the electrode assembly is accommodated in the packaging bag; the first tab is electrically connected to the electrode assembly and extends out of the packaging bag in a first direction; the electrode assembly is of a wound structure and comprises a first end face, a first side surface, a first arc-shaped face and a second side surface, wherein the first side surface, the first arc-shaped face and the second side surface are arranged around a periphery of the first end face; the first insulating adhesive tape comprises an adhesive tape body and a first extension, wherein the adhesive tape body is bonded to the first side surface, the first arc-shaped face and the second side surface, respectively, the first extension extends beyond a negative electrode plate of the electrode assembly in the first direction, and the first extension comprises a first section and a second section; and the second insulating adhesive tape is bonded to the first end surface, the first section and the second section, respectively. In this way, the present application can increase the thermal chamber test pass rate of the secondary battery.

METHODS AND SYSTEMS FOR DYNAMICALLY CONTROLLING OUTPUT POWER OF A BATTERY

Resumen de: WO2025207019A1

Embodiments herein disclose methods and systems for dynamically regulating the power output of a battery in a vehicle based on the battery limits, wherein power utilization is used, thereby facilitating enhanced performance and efficiency in high-power vehicle operations.

ACTIVE MATERIAL, AND ELECTRODE MIXTURE, ELECTRODE LAYER, AND SOLID-STATE BATTERY CONTAINING SAME

Resumen de: WO2025205723A1

The present invention addresses the problem of providing an active material with which reductions in performance during the storage of a solid-state battery can be suppressed. The active material has a core particle and a coating layer disposed on at least a part of the surface of the core particle. The coating layer contains a solid electrolyte that contains a crystal phase having an argyrodite crystal structure. The solid electrolyte contains the element lithium (Li), the element phosphorus (P), the element sulfur (S), and a halogen (X) element, and the molar ratio of the halogen (X) element to the element phosphorus (P) is less than 1.2. The solid electrolyte preferably has a molar ratio of the element sulfur (S) to the element phosphorus (P) of 4.6 or more.

LITHIUM ION SECONDARY BATTERY AND LITHIUM ION SECONDARY BATTERY MODULE

Resumen de: WO2025205494A1

A lithium ion secondary battery (10) provided with a positive electrode that includes a positive electrode active material layer (1), a negative electrode that includes a negative electrode active material layer (2), and an electrolyte, wherein: a negative electrode active material included in the negative electrode active material layer (2) has an SEI film on at least a portion of the surface thereof; the electrolyte contains fluoroethylene carbonate; and the fluoroethylene carbonate concentration in the electrolyte determined using a prescribed method is 0.5 mass%-4.5 mass% inclusive.

LITHIUM ION BATTERY AND ELECTRONIC DEVICE

Resumen de: WO2025200764A1

The present application provides a lithium ion battery and an electronic device using the lithium ion battery. The lithium ion battery comprises a positive electrode sheet and an electrolyte solution, wherein the positive electrode sheet comprises a nickel-cobalt-manganese ternary material, the particle size Dv10 of the nickel-cobalt-manganese ternary material is D1 μm, the particle size Dv90 of the nickel-cobalt-manganese ternary material is D2 μm, and the nickel-cobalt-manganese ternary material satisfies: 0.9≤D1≤4.8, and 1.2≤D2/D1≤6.6. The electrolyte solution comprises at least one of a compound of formula (I) having a structural formula (I) and a compound of formula (II) having a structural formula (II), at least one of a compound of formula (III) having a structural formula (III) and a compound of formula (IV) having a structural formula (IV), and a compound of formula (V) having a structural formula (V). On the basis of the total mass of the electrolyte solution, the sum of the mass percentages of the compound of formula (III) and the compound of formula (IV) is C%, and the electrolyte solution satisfies: 25≤C×(D2/D1)≤400. By means of a synergistic effect between the electrolyte solution and the nickel-cobalt-manganese ternary material, the intermittent cycling performance of the lithium ion battery in a high-voltage state can be ensured.

NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

Resumen de: WO2025206060A1

The disclosed non-aqueous electrolyte secondary battery comprises: a positive electrode; a negative electrode that includes a negative electrode mixture layer; and a non-aqueous electrolyte. The negative electrode mixture layer comprises a negative electrode active material and a binder component. The binder component comprises a binder compound, a phosphorus-containing compound, and a polyvalent cation. The phosphorus-containing compound comprises at least one kind of phosphorus-containing group selected from the group consisting of a phosphate group, a phosphate base, a phosphonic acid group, and a phosphonic acid base. There are six of the at least one kind of phosphorus-containing group contained in the phosphorus-containing compound. The negative electrode active material contains a silicon-containing material.

NEGATIVE ELECTRODE FOR SECONDARY BATTERY, AND SECONDARY BATTERY

Resumen de: WO2025204898A1

A negative electrode (12) for a secondary battery is characterized by comprising an elongated negative electrode core (30), and a negative electrode mixture layer (32) disposed on the negative electrode core (30), the negative electrode mixture layer (32) having a first end region (12a) on one end side in the longitudinal direction and a second end region (12b) on the other end side in the longitudinal direction, the first end region (12a) exhibiting a smaller negative electrode plate charging expansion ratio than the second end region (12b), a ratio (E1/E2) of a negative electrode plate charging expansion ratio (E1) of the first end region (12a) to a negative electrode plate charging expansion ratio (E2) of the second end region (12b) being 0.9 or less, a difference between the negative electrode plate porosity of the second end region (12b) and the negative electrode plate porosity of the first end region (12a) being 3% or less.

ELECTRODE SHEET STRUCTURE, ELECTRODE SHEET MANUFACTURING METHOD, AND ELECTROCHEMICAL DEVICE

Resumen de: WO2025201195A1

The present application provides an electrode sheet structure, an electrode sheet manufacturing method, and an electrochemical device. The electrode sheet structure comprises a first electrode sheet, and the first electrode sheet comprises a first current collector and a first active material layer arranged on the surface of the first current collector. In the width direction of the first electrode sheet, the first electrode sheet has a first side edge and a second side edge which are opposite to each other, the first side edge is provided with a first groove, the second side edge is provided with a second groove, and the projection of the second groove on the first side edge at least partially overlaps with the first groove. A first exposed foil area is provided in the first groove, and the second groove runs through the first electrode sheet in the thickness direction of the first electrode sheet. In the length direction of the first electrode sheet, the size of the second groove is larger than that of the first groove. No active material is present between the first groove and the edge of the first electrode sheet, so that secondary active material removal is not required, and burrs in the first groove are reduced; the size of the second groove is configured to be larger than that of the first groove, so that it can be ensured that no exposed foil area is left, and the safety risk caused by burrs is reduced.

CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERTY COMPRISING SAME

Resumen de: WO2025206832A1

A cathode active material for a lithium secondary battery according to the present invention is a cathode active material for a single crystal lithium secondary battery. The cathode active material includes a form in which 1 to 20 single particles are aggregated, and the single particles may satisfy formula 1 in the present specification.

BATTERY CELL, ENERGY STORAGE CABINET, AND ELECTRIC DEVICE

Resumen de: WO2025200399A1

A battery cell, an energy storage cabinet, and an electric device. The battery cell comprises a casing, a plurality of positive poles, and a plurality of negative poles; the plurality of positive poles are arranged on a first side of the casing, protrude from the first side, are arranged at intervals, and are arranged in a first direction of the battery cell; the plurality of negative poles are arranged on a second side of the casing, protrude from the second side, are arranged at intervals, and are arranged in the first direction of the battery cell; the first side and the second side are oppositely arranged in a second direction of the battery cell; and the first direction is perpendicular to the second direction.

CATHODE ACTIVE MATERIAL, POSITIVE ELECTRODE, SODIUM-ION BATTERY, BATTERY ASSEMBLY, AND ELECTRIC SYSTEM

Resumen de: WO2025200435A1

A cathode active material, a positive electrode, a sodium-ion battery, a battery assembly, and an electric system. The cathode active material satisfies: the compaction rebound rate ε of the cathode active material ranging from 3% to 10%, wherein the compaction rebound rate ε=1-(compaction density after rebound/maximum compaction density). The stability and integrity of the structure of the material can be maintained during an electrochemical process, thereby significantly improving the cycling performance.

NEGATIVE ELECTRODE SHEET, ELECTROCHEMICAL APPARATUS, AND ELECTRICAL DEVICE

Resumen de: WO2025200731A1

The present application relates to the technical field of batteries, and discloses a negative electrode sheet (10), an electrochemical apparatus, and an electrical device. The negative electrode sheet (10) comprises a first active material layer (11), a first current collector (12), and a second active material layer (13); the first active material layer (11) comprises a first coating (111) and a second coating (112) provided between the first coating (111) and the first current collector (12); in a first direction (X1), a first end (112a) of the second coating (112) extends beyond a first end (111a) of the first coating (111), so that the first active material layer (11) has a first single-layer portion (M1); and/or, in a second direction (X2), a second end (112b) of the second coating (112) extends beyond a second end (111b) of the first coating (111), so that the first active material layer (11) has a second single-layer portion (M2); and the first direction (X1) is opposite to the second direction (X2). In the first direction (X1) or the second direction (X2) of the negative electrode sheet (10), the second coating (112) extends beyond the first coating (111). Thus, the problem of damage to the first current collector (12) due to two ends of the active material layer being prone to over-compression during rolling is solved, the probability of breakage of the negative electrode sheet (10) during rolling is reduced, and the production yield of the negative electrode sheet (

ALKALINE ZINC SECONDARY BATTERY AND SEPARATOR FOR ALKALINE ZINC SECONDARY BATTERY

Resumen de: WO2025206242A1

Provided are a separator for an alkaline zinc secondary battery, and the alkaline zinc secondary battery, the separator including a porous substrate and a porous layer provided on one or both surfaces of the porous substrate, wherein: the porous substrate is a microporous membrane containing polyolefin; the porous layer includes a resin having at least one bonding group selected from the group consisting of an amide bond, an amide-imide bond, and an imide bond, and has a three-dimensional network structure; and the resin is additionally contained within the pores of the porous substrate.

BATTERY SYSTEM AND TEMPERATURE CONTROL METHOD

Resumen de: WO2025204702A1

The present disclosure improves the reliability of a battery system. A battery system (1) according to the present disclosure comprises: a storage battery (11) having a period in which internal resistance decreases from the start of use to a specific time point in a life cycle; a temperature measurement unit (T1, 121) for measuring the temperature of the storage battery (11); and a heating unit (13) for heating the storage battery (11). The control target lower limit temperature of the storage battery (11) at the start of use is set higher than the control target lower limit temperature to be changed in the period.

METHOD FOR PRODUCING CYLINDRICAL BATTERY, DEVICE FOR PRODUCING CYLINDRICAL BATTERY, AND CYLINDRICAL BATTERY

Resumen de: WO2025205032A1

This method for producing a cylindrical battery (10) comprises a welding step for welding, to a collector plate (19), an electrode core body exposed part (41) that constitutes a height direction end of an electrode body (14). The method for producing the cylindrical battery (10) comprises a partial load application step for, before the welding step, applying a height direction load to only part of an end face on the height direction end side of the electrode body (14). The partial load application step may be performed a plurality of times in which the region of the end face to which the height direction load is applied is changed. The method for producing a cylindrical battery according to the present disclosure makes it possible to reliably and stably weld, to the collector plate (19), the electrode core body exposed part (41) of the electrode body (14) positioned at said end, and makes it possible to suppress application of an unnecessary load to an electrode (11, 12) at an end on the opposite side from said end of the electrode body (14).

COMPOSITE MATERIAL

Resumen de: WO2025206825A1

Disclosed in the present specification are a composite material and a fire extinguishing device which can be applied to products or devices that are in or likely to be in an abnormal state to effectively respond to the abnormal state. For example, the composite material and the like can be applied to an article comprising a plurality of such products or elements to respond to abnormal heat generation, explosion, and ignition occurring in a certain element or product and prevent or minimize the propagation of such heat generation, explosion, and ignition to other adjacent elements or products. The composite material and the like also exhibit excellent handling properties and storage stability. The present specification may also provide uses of the composite material and the like.

ENERGY STORAGE SYSTEM

Resumen de: WO2025200391A1

Disclosed is an energy storage system. The energy storage system comprises a cabinet body and an air-conditioning apparatus; the air-conditioning apparatus is embedded in the cabinet body, and the air-conditioning apparatus partially protrudes out of the outer surface of the cabinet body; a drainage port is formed on the part of the air-conditioning apparatus protruding out of the outer surface, and water in the air-conditioning apparatus can be directly discharged through the drainage port. Therefore, water can be prevented from leaking into the cabinet body.

COMPOSITE MATERIAL

Resumen de: WO2025206823A1

Disclosed in the present specification are a composite material and a fire extinguishing device which can be applied to products or elements that are in or likely to be in an abnormal state to effectively respond to the abnormal state. For example, the composite material and the like can be applied to an article comprising a plurality of such products or elements to respond to abnormal heat generation, explosion, and ignition occurring in a certain element or product and prevent or minimize the propagation of such heat generation, explosion, and ignition to other adjacent elements or products. The composite material and the like also exhibit excellent handling properties and storage stability. The present specification may also provide uses of the composite material and the like.

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

Nº publicación: WO2025199812A1 02/10/2025

Solicitante:

CONTEMPORARY AMPEREX TECH CO LIMITED [CN]
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