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1601
resultados
Última actualización
20/03/2026 [07:15:00]
Resultados 1375 a 1400 de 1601
Resumen de: WO2026049538A1
The present invention relates to a cathode material powder comprising: a first cathode active material including a first phosphorous oxide; and a second cathode active material including a second phosphorous oxide, wherein the first phosphorous oxide is represented by a specific chemical formula 1, the second phosphorous oxide is represented by a specific chemical formula 2, the amount of the first cathode active material is greater than that of the second cathode active material, and the second cathode active material has an average particle diameter D50 of 1.0 µm or less.
Resumen de: WO2026049533A1
The present invention relates to a cathode active material, and a cathode and a lithium secondary battery that include same, the cathode active material comprising a lithium manganese iron phosphate-based compound and having a value of 5 or less as calculated by mathematical expression 1. When the cathode active material is applied to the lithium secondary battery, charge/discharge rate characteristics are excellent. Mathematical expression 1 │0.5∗LB-LD│∗103 In mathematical expression 1, LB is a b-axis length (unit: Å) of a crystal structure of the lithium manganese iron phosphate-based compound, and LD is a (020) d-spacing (unit: Å) between crystal structures of the lithium manganese iron phosphate-based compound.
Resumen de: WO2026048578A1
The present invention is characterized in that: a positive electrode (11) is provided with a long positive electrode core body (30), and a positive electrode mixture layer (32) and a coating layer (46) which are disposed on the positive electrode core body (30); the positive electrode core body (30) comprises, at an edge in the short-side direction of the positive electrode core body (30), a positive electrode core body exposed part (34) which extends in the longitudinal direction of the positive electrode core body (30) and in which the positive electrode core body (30) is exposed, a positive electrode mixture layer disposition part (33) in which the positive electrode mixture layer (32) is disposed, and a coating layer disposition part (35) in which the coating layer (46) is disposed between the positive electrode core body exposed part (34) and the positive electrode mixture layer disposition part (33); the coating layer (46) has a protective layer (48) that comprises an inorganic filler and a first binder, and an adhesive layer (50) that comprises a second binder; the adhesive layer (50) is disposed on the positive electrode core body (32) in the coating layer disposition part (35); and the protective layer (48) is disposed on the adhesive layer (50).
Resumen de: WO2026048714A1
Provided is ferritic stainless steel foil that achieves both excellent adhesion to a thin film formed on an oxide film and excellent electrical characteristics. Ferritic stainless steel foil according to the present disclosure comprises a foil body and an oxide film formed on the surface of the foil body. The foil body includes ferritic stainless steel. The oxide film has an intermediate change region in oxygen concentration in the depth direction from the surface of the oxide film, the intermediate change region having a thickness of 3.0-10.0 nm.
Resumen de: WO2026048568A1
A non-aqueous electrolyte secondary battery comprises a positive electrode, a negative electrode, and a non-aqueous electrolyte, wherein the non-aqueous electrolyte secondary battery is characterized in that: the negative electrode has a negative electrode active material that contains a Si-containing material; the Si-containing material contains a composite material having a carbon phase and a silicon phase that is dispersed in the carbon phase; the non-aqueous electrolyte contains a heterocyclic compound that contains a heterocycle and at least one electron-withdrawing group R; the electron-withdrawing group R contains oxygen and/or nitrogen; and the heterocycle contains nitrogen and sulfur.
Resumen de: WO2026048563A1
A secondary battery negative electrode (12) is characterized by comprising an oblong negative electrode core (30) and a negative electrode mixture layer (32) that is provided on the negative electrode core (30) and by having a first end region (12a) that is on one end (32a) side in the longitudinal direction of the negative electrode mixture layer (32), a second end region (12b) that is on another end (32b) side in the longitudinal direction of the negative electrode mixture layer (32), and a low expansion region (12c) that has a lower negative electrode plate charging expansion rate than the first end region (12a) and the second end region (12b), the low expansion region (12c) being at least at a position of at least 0.05 but less than 0.40 when the position of the one end (32a) in the longitudinal direction of the negative electrode mixture layer (32) is 0 and the position of the other end (32b) in the longitudinal direction of the negative electrode mixture layer (32) is 1.
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.
Resumen de: WO2026046066A1
The present application relates to a battery, an electric device, an energy storage system, and a power station. During the structural design of the battery, the maximum size of conductive particles in an adhesive layer in a direction perpendicular to the thickness direction of the adhesive layer is controlled to be less than or equal to the adhesive thickness of the adhesive layer, and the projection size of the conductive particles in the thickness direction is reduced. Additionally, the minimum value of the distance between the conductive particles and the surface of the adhesive layer facing a battery cell is controlled to be greater than zero, so that each conductive particle does not exceed the surface of the adhesive layer facing the battery cell. By means of such design, the size and position distribution of the conductive particles in the adhesive layer are controlled, charge accumulation of the conductive particles in the adhesive layer is reduced, the probability of occurrence of partial discharge is effectively reduced, and the reliability of the battery is improved.
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.
Resumen de: WO2026048293A1
A negative electrode (12) for a secondary battery is characterized by comprising an elongate negative electrode core body (30) and a negative electrode mixture layer (32) that is positioned on the negative electrode core body (30), wherein there is a first end region (12a) on one end (32a) side of the negative electrode mixture layer (32) in the length direction, a second end region (12b) on the other end (32b) side of the negative electrode mixture layer (32) in the length direction, and a low expansion region (12c) that has a smaller negative electrode plate charging expansion rate than the first end region (12a) and the second end region (12b), the ratio (y=y1/y2) of the negative electrode plate charging expansion rate (y1) of the low expansion region (12c) to the greater negative electrode plate charging expansion rate (y2) among the negative electrode plate charging expansion rate of the first end region (12a) and the negative electrode plate charging expansion rate of the second end region (12b) satisfies y≤0.90, and the difference between the negative electrode plate porosity of the low expansion region (12c) and the negative electrode plate porosity of the first end region (12a) and the difference between the negative electrode plate porosity of the low expansion region (12c) and the negative electrode plate porosity of the second end region (12b) are both 3% or less.
Resumen de: WO2026048253A1
According to the present invention, an electrode active material is produced by mixing a black mass obtained by treating used lithium ion batteries and a plurality of metal salts that each include Li, Ni, Mn, and Co as metal components such that there are a total of 20-5000 parts by weight of the metal salts per 100 parts by weight of the black mass and performing a heat treatment to cause the black mass and the metal salts to react. A lithium ion battery according to the present invention includes a positive electrode 3, a negative electrode 5, and an electrolyte, a positive electrode active material that is the principal constituent of the positive electrode 3 being formed from the electrode active material produced as described above. The present invention thereby provides an electrode active material and a lithium ion battery that, by using a black powder from a black mass directly, achieve excellent practicality and make it possible to ensure desired battery characteristics without the need to recover or purify metal salts or the like from the black mass, even when there are broad differences in the component composition of individual black masses.
Resumen de: WO2026048248A1
This secondary battery comprises: an electrode body including a positive electrode, a negative electrode, and a separator, the electrode body being formed by winding the positive electrode and the negative electrode with the separator interposed therebetween; a bottomed cylindrical outer can housing the electrode body; a sealing body closing an opening of the outer can; and a current collector plate (30) electrically connected to the outer can. The secondary battery includes an exhaust mechanism provided at least at a bottom of the outer can. The negative electrode is connected to the bottom of the outer can via the current collector plate (30). The current collector plate (30) has a plurality of extending portions (32) extending in radial directions of the outer can from a base portion (31) joined to an inner bottom of the outer can. Each extending portion (32) is provided with an easily deformable portion (50). The easily deformable portion (50) is more easily deformable in the thickness direction of the current collector plate (30) than portions of the current collector plate (30) other than the easily deformable portion (50).
Resumen de: WO2026049552A1
The present invention relates to a positive electrode active material, a method for preparing same and all-solid-state rechargeable batteries, the positive electrode active material comprising: a first positive electrode active material comprising a secondary particle that contains a first lithium nickel-based composite oxide and is formed by aggregation of a plurality of primary particles, a first coating layer that is positioned on the surface of the secondary particle and contains boron, and a second coating layer that is positioned on the first coating layer and contains lithium aluminate; and a second positive electrode active material which comprises a particle that contains a second lithium nickel-based composite oxide and is in the form of a single particle, a first coating layer that is positioned on the surface of the single particle and contains boron, and a second coating layer that is positioned on the first coating layer and contains lithium aluminate, and which has an average particle diameter smaller than the average particle diameter of the first positive electrode active material.
Resumen de: WO2026049529A1
The present invention may provide a battery pack comprising: cell arrays comprising a plurality of battery cells; a pack case assembly in which a plurality of pack cases configured to receive at least one of the cell arrays therein are arranged; and a venting valve configured to discharge venting gas generated from the battery cells to the outside, wherein the cell arrays are configured to be inserted into the pack cases in a first direction, and the pack cases are configured to be connected in a second direction perpendicular to the first direction.
Resumen de: WO2026049546A1
The present invention relates to a novel carbon nanotube having excellent electrical conductivity while exhibiting excellent storage and transportation efficiency, a method for manufacturing the carbon nanotube, a carbon nanotube dispersion, an electrode structure comprising the carbon nanotube, and a secondary battery comprising the carbon nanotube.
Resumen de: WO2026049415A1
The present invention relates to an electrode lead and an electrode lead manufacturing method, and more specifically, to: an electrode lead connected to an electrode assembly of a rechargeable battery which can be repeatedly charged and discharged; and an electrode lead manufacturing method for manufacturing the electrode lead. The electrode lead according to an embodiment of the present invention comprises: a first portion coupled to an electrode tab of an electrode assembly of a rechargeable battery; and a second portion connected to the first portion and protruding outward from a case of the rechargeable battery, wherein the first portion is narrower than the second portion, and a plating layer may be formed on at least part of the first portion and the second portion.
Resumen de: WO2026049535A1
The present specification relates to a cathode active material, and a cathode and a lithium secondary battery comprising same, the cathode active material comprising a lithium manganese iron phosphate-based compound, wherein the value calculated in mathematical formula 1 is 60 or less, and the average grain size of the lithium manganese iron phosphate-based compound is 135 nm or less.
Resumen de: WO2026048688A1
This method for manufacturing a power storage device comprises: a step for alternately laminating an electrode foil and separators, and causing at least a part of an active-material uncoated portion of the laminated electrode foil to protrude from end portions of the separators in a direction along a short side of the electrode foil; a step for bending at least a part of the active-material uncoated portion at a plurality of locations to form a plurality of extension portions extending in a direction intersecting the electrode foil so as to cover the separators when viewed from the direction along the short side of the electrode foil; and a step for laser-welding the active-material uncoated portion and a current collector plate by irradiating an outer surface of the current collector plate with laser light in a state in which an inner surface of the current collector plate is in contact with a part of the active-material uncoated portion that is outside the plurality of extension portions in the direction along the short side of the electrode foil.
Resumen de: WO2026048547A1
Disclosed is a nonaqueous electrolyte secondary battery (10) which is characterized by comprising: an electrode body (14) that is obtained by winding a positive electrode (11) and a negative electrode (12) with a separator (13) being interposed therebetween; a nonaqueous electrolyte; and an outer package can (16) that houses the electrode body (14) and the nonaqueous electrolyte. This nonaqueous electrolyte secondary battery (10) is also characterized in that: the negative electrode (12) has a negative electrode core body (40) and a negative electrode mixture layer (41) that is provided on the negative electrode core body (40); an exposed part (42) in which the surface of the negative electrode core body (40) is exposed is formed on the outer peripheral surface of the electrode body (14); the exposed part (42) is in contact with the inner surface of the outer package can (16); the nonaqueous electrolyte contains a heterocyclic compound that comprises at least one electron-withdrawing group R and a heterocyclic ring; the electron-withdrawing group R contains oxygen and/or nitrogen; and the heterocyclic ring contains nitrogen and sulfur.
Resumen de: WO2026048595A1
This lithium secondary battery comprises: a positive electrode; a negative electrode facing the positive electrode; a separator disposed between the positive electrode and the negative electrode; and a nonaqueous electrolyte. The negative electrode has a negative electrode current collector and a negative electrode tab electrically connected to the negative electrode current collector. In the negative electrode, lithium metal is deposited on the negative electrode current collector during charging, and lithium metal is dissolved in the nonaqueous electrolyte during discharging. The negative electrode tab contains stainless steel at least in a connection portion with the negative electrode current collector.
Resumen de: WO2026048546A1
A positive electrode (11) has a positive electrode core body (30), and a positive electrode mixture layer (31) and a protective layer (33) that are formed on the positive electrode core body (30). A mixture layer non-formation portion (32) at which the positive electrode mixture layer (31) is not formed is provided to a winding start end part (11B) of the positive electrode (11). The protective layer (33) contains an insulating material as the main component, and has a first region (34) that covers the mixture layer non-formation portion (32), and a second region (35) that is disposed between the positive electrode core body (30) and the positive electrode mixture layer (31). The volume resistivity of the protective layer (33) in the second region (35) is less than the volume resistivity of the protective layer (33) in the first region (34).
Resumen de: WO2026046168A1
Provided in the present application is a liquid-cooling unit for a battery cluster, the liquid-cooling unit comprising a heat exchanger (11) and a pipeline system (2), wherein the heat exchanger (11) is configured to perform heat exchange on a coolant that flows therethrough; the pipeline system (2) comprises a first connection pipe (21) and a second connection pipe (22); the heat exchanger (11) is provided with a first connection port (111) and a second connection port (112); the first connection pipe (21) is connected to the first connection port (111); the second connection pipe (22) is connected to the second connection port (112) by means of a main pipe (23) and a bypass pipe (24) that are arranged in parallel; and each of the main pipe (23) and the bypass pipe (24) is provided with a pump (25) and a first valve (26).
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.
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.
Nº publicación: WO2026045891A1 05/03/2026
Solicitante:
QUJING EVE ENERGY CO LTD [CN]
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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).
BOPI
Sede Electrónica
