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1520
resultados
Última actualización
20/05/2025 [07:22:00]
Resultados 725 a 750 de 1520
Resumen de: WO2025092413A1
A battery top cover assembly and a battery. The battery top cover assembly comprises a cover plate (100), collars (200), wrapping rubbers (300), and terminals (400). Mounting holes (101) are formed on the cover plate (100), a central hole (201) axially runs through each collar (200), the bottom of each collar (200) extends inward along the radial direction of the central hole (201) to form a first annular boss (210), and the bottom of each collar (200) passes through the corresponding mounting hole (101). The wrapping rubbers (300) wrap the peripheries of the tops of the collars (200), and the bottom surfaces of the wrapping rubbers (300) are connected to the cover plate (100). Each terminal (400) comprises a first step (410) and a second step (420) which are successively connected from top to bottom, the first step (410) passes through the inner ring of the corresponding first annular boss (210), the side surface of the first step (410) is connected to the inner ring of the corresponding first annular boss (210), and the end surface of the second step (420) is connected to the bottom surface of the corresponding collar (200).
Resumen de: WO2025091968A1
A carbon material and a preparation method therefor and a use thereof. The carbon material has pores, and the pore volume of micropores among the pores is greater than or equal to 0.05 cm3/g. The carbon material contains a doping element, and the doping element includes at least one of nitrogen, phosphorus, arsenic, oxygen, sulfur, selenium, and tellurium. The internal doping concentration of the doping element in the carbon material is Q1 wt%, wherein Q1<8. The surface doping concentration of the doping element in the carbon material is Q2 wt%, wherein 10≤Q2≤25. Q1 wt% and Q2 wt% are obtained by means of the following test method: taking a sample of m1 g from the carbon material, wherein m1≥10; using a scanning electron microscope-energy dispersive spectrometer to test the sample to obtain Q2 wt%; and using a focused ion beam instrument to perform cross-section treatment on the sample, and using the scanning electron microscope-energy dispersive spectrometer to test the cross-section of the sample to obtain Q1 wt%.
Resumen de: WO2025092282A1
Provided in the present application are a negative electrode material and a battery. The negative electrode material contains silicon, and at least part of silicon is present in the form of crystalline-phase silicon. On the basis that the mass content of silicon in the negative electrode material is 100%, the mass content of the crystalline-phase silicon is A%, and the average size of silicon grains of the crystalline-phase silicon is B nm. The negative electrode material satisfies the following characteristics: 0.3≤A/B≤60, and 6≤A+B≤75. According to the negative electrode material and the battery provided in the present application, the negative electrode material can reach an ideal balance state between cycling performance, capacity exertion and rate capability.
Resumen de: WO2025091542A1
A method for preparing flexible conductive wood, comprising the following steps: (1) cutting wood in the vertical growth direction to form wood chips having a certain thickness, impregnating the wood chips with a chemical eluent, then repeatedly cleaning the wood chips several times by using clear water, and then subjecting the wood chips to vacuum drying treatment; (2) preparing a small-size graphene oxide solution, impregnating the delignified wood chips with the small-size graphene oxide solution in vacuum, then drying the delignified wood chips in vacuum, then preparing a large-size graphene oxide solution, impregnating the wood chips with the large-size graphene oxide solution, and then drying the wood chips in vacuum; and (3) preparing a reducing agent solution and subjecting the wood chips impregnated with the graphene oxide to impregnation with the reducing agent solution to obtain the flexible conductive wood. By removing lignin by means of the chemical method to soften wood, wood having good flexibility is obtained, and by loading graphene flakes having different particle sizes onto the surface of the wood and into pore channels of the wood by means of gradient impregnation, the conductivity of the wood is improved. The prepared composite wood has wide application prospects in the fields of flexible electronic devices, flexible batteries, wearable devices, etc.
Resumen de: WO2025091663A1
Disclosed in the present application is a lithium battery, comprising: a bus bar, a top cover sheet, an elastic sealing ring and a positive terminal, wherein the top cover sheet is arranged on the bus bar, a first mounting recess is provided in the middle region of the side of the top cover sheet away from the bus bar, and a liquid injection hole is provided in the center of the first mounting recess; the elastic sealing ring is arranged in the first mounting recess; and the positive terminal is arranged on the first mounting recess, and the positive terminal presses against the elastic sealing ring.
Resumen de: WO2025091660A1
A method for realizing single-crystalline regeneration of a spent positive electrode material by using a vacuum cracking method. The method comprises: fully mixing a spent polycrystalline ternary positive electrode material of a lithium ion battery with nickel stearate and a lithium salt, melting same, and then calcining same in vacuum so as to obtain a regenerated single-crystalline ternary positive electrode material. The present method not only compensates the loss of lithium of a spent single-crystalline ternary positive electrode material, but also converts insoluble residual Ni on the surface of the single-crystalline material during the "cracking" process of nickel stearate into LiNiO2 capable of providing discharge capacity, thus allowing the regenerated positive electrode material to exhibit more excellent electrochemical properties, and further reducing costs. The method is simple and easy to operate, and has modest requirements on regeneration reaction temperature, and while not needing long-time high-temperature calcination, the method can be used for simultaneously carrying out two processes polycrystalline cracking into single crystalline and lithium replenishment, thus involving low energy consumption, and being easy to popularize.
Resumen de: WO2025094733A1
This power storage device (10) comprises a power storage cell (20) that is comprised of a positive electrode (21), a negative electrode (22), a separator (23), and a sealing part (24) that forms a sealed space for housing a liquid electrolyte between the positive electrode (21) and the negative electrode (22). The positive electrode (21) has a positive electrode active material layer (21b) that is formed on a first surface (21a1) of a positive electrode current collector (21a). The first surface (21a1) of the positive electrode current collector (21a) is formed of aluminum. The sealing part (24) is formed of an acid-modified polyolefin resin, and is bonded to the first surface (21a1) of the positive electrode current collector (21a). The positive electrode (21) comprises a carbon coating layer (M) that is provided, at a bonded portion with the sealing part (24), on the first surface (21a1) of the positive electrode current collector (21a). The carbon coating layer (M) contains carbon particles and a coating layer binding agent. The basis weight of the carbon coating layer M is 0.2 g/m2 or more.
Resumen de: WO2025094756A1
Provided is a cylindrical nonaqueous electrolyte secondary battery for which corrosion of an opening end of an outer can is suppressed. A cylindrical nonaqueous electrolyte secondary battery as an example embodiment of this invention includes: an outer can having a bottomed cylindrical shape and a groove part at an opening part; a nonaqueous electrolyte and an electrode body housed in the outer can; and a sealing body closing the opening part of the outer can. The electrode body has a winding structure. A tape for fixing a winding end of the electrode body is stuck to an outer peripheral surface of the electrode body. The tape has an extended part that extends out from an end on the groove part side of the outer peripheral surface. The extended part contacts the groove part and absorbs the nonaqueous electrolyte.
Resumen de: WO2025095242A1
The present invention relates to an elastic sheet for an all-solid-state battery and an all-solid-state battery including same. The elastic sheet comprises: a polyurethane film; a first (meth)acrylate-based resin layer located on one surface of the polyurethane film; and a second (meth)acrylate-based resin layer located on the other surface of the polyurethane film.
Resumen de: WO2025095375A1
The present invention relates to a non-fluorine-based siloxane-polymer composite binder and, specifically, to a method for preparing a non-fluorine-based siloxane-polymer composite binder having improved adhesion, and application, to an electrode and a secondary battery, of a non-fluorine-based siloxane-polymer composite binder prepared using the method. More specifically, the present invention provides a method for preparing a non-fluorine-based siloxane-polymer composite binder, comprising: a first step of adding, to a polymer solution prepared by dissolving a polymer having oxygen-containing functional groups in a solvent, a first silane compound that has an organic curing group and stirring same, thereby preparing a mixture in which the silane compound is uniformly dispersed in the polymer solution; and a second step of adding a second silane compound containing no organic curing groups and an acid catalyst or a base catalyst to the mixture and thermally stirring same, thereby inducing in situ condensation between the oxygen-containing functional groups of the polymer, the oxygen-containing functional groups of the first silane compound and the oxygen-containing functional groups of the second silane compound so that a siloxane resin is synthesized by binding of the polymer through a covalent bond, and thus a siloxane-polymer composite resin is prepared.
Resumen de: WO2025091978A1
A negative electrode material and a preparation method therefor, a negative electrode sheet, and a lithium ion battery. The negative electrode material comprises a silicon-based active substance and a carbon material, the negative electrode material has an oil absorption number of O mL/100 g, specific surface area of Sm2/g, and particle size concentration of P1, wherein P1=(D80+D50)/(D50+D20), and the physical rebound capability of the negative electrode material is T, wherein T=0.01*O*S/P1, and 0.20<T<1.20. The negative electrode material has a relatively low physical rebound capability, and the volume of an electrode sheet prepared from the negative electrode material is not prone to rebound after compaction, thereby obtaining a relatively high compaction density, and exerting excellent cycle performance.
Resumen de: WO2025091977A1
A negative electrode material and a preparation method therefor, and a battery. The negative electrode material comprises a silicon-based active substance and a carbon material. The oil absorption value of the negative electrode material is O mL/100g, the specific surface area is S m2/g, the tap density is T g/cm 3, the degree of compaction of the negative electrode material is Y, Y=T/(0.01*O*S), and 0.6<Y<3.0. The negative electrode material has relatively high compaction capability, which allows for easy compaction during the preparation of electrode sheets, thereby achieving higher compaction density, and improving the cycle performance of batteries.
Resumen de: WO2025091836A1
The present application relates to a battery pack, a balancing control method and apparatus, a computer device, a medium and a product. The battery pack comprises: at least two battery cells, wherein a balancing circuit, a processing module and a wireless communication module are integrated on each of the battery cells. The processing module of each battery cell is used for acquiring a balancing control instruction by means of the wireless communication module of the battery cell to which the processing module belongs, and controlling, on the basis of the balancing control instruction, the working state of the balancing circuit of said battery cell, so as to perform balancing control over said battery cell.
Resumen de: WO2025091840A1
An electrolyte solution, a secondary battery and an electric device. The electrolyte solution comprises a cyclosiloxane compound represented by formula (1), wherein R1 and R2 are respectively independently selected from any one of H, a halogen, an aryl having 6-10 ring-forming atoms, an alkyl having 1-10 carbon atoms, a halogen-substituted alkyl having 1-10 carbon atoms, an aryl having 6-10 ring-forming atoms, and formula (2), and R1 and R2 are not H at the same time; R3 is selected from any one of an alkylene having 1-5 carbon atoms and a halogen-substituted alkylene having 1-5 carbon atoms; R4 and R5 are respectively independently selected from any one of H, an alkoxy having 1-10 carbon atoms and a halogen-substituted alkoxy having 1-10 carbon atoms, and R1 and R2 are not H at the same time; and "*" represents a connection site, formula (3) represents that atoms at two ends thereof are connected to form a ring, and n is any integer of 3 5.
Resumen de: WO2025091657A1
A stirring system for a lithium iron phosphate slurry, comprising: a first dispersing system formed by a first feeding mechanism (190), a second feeding mechanism (180), a first stirring tank (110), a homogenizing pump (130), and a first demagnetizing machine (120), and a second dispersing system formed by a second stirring tank (140), a driving pump (150), a second demagnetizing machine (160), a heat exchanger (170), and a grinding device (200). Material taking openings (201) located at different heights are formed in the second stirring tank (140); a material taking device takes materials from the material taking openings (201) and feeds the materials into particle size measurement devices for measurement, so as to measure the particle sizes of the materials at different heights; then, the particle size measurement devices send the measurement results to a remote controller (202); and the remote controller (202) calculates the variance of each measurement result, and controls the second stirring tank (140) to stop stirring when the variance is less than a preset threshold. Thus, the problem of energy waste caused by setting a fixed stirring time can be avoided.
Resumen de: WO2025091548A1
An all-solid-state lithium battery and a preparation method therefor. Li3PO4 is used as a raw material of a solid electrolyte LiPON layer and a positive electrode active material C@LiFePO4 layer, a LiPON layer is prepared by means of magnetron sputtering, and before the raw material of the C@LiFePO4 layer is deposited by means of magnetron sputtering, a Li3PO4 nano thin layer tightly connected to the LiPON layer is deposited on the LiPON layer in advance by means of sputtering, and the Li3PO4 nano thin layer participates in the reaction in a high-temperature sintering stage, to induce a high-temperature solid-state generated C@LiFePO4 active material layer to be tightly combined with the solid electrolyte LiPON layer, so that a crack structure between solid-solid interfaces can be avoided, thereby obviously improving the interface impedance of the all-solid-state lithium battery, and significantly improving the performance of the battery.
Resumen de: WO2025091394A1
The present application provides a fluorine-containing polymer, a preparation method therefor, a positive electrode sheet, a secondary battery and an electric device. The fluorine-containing polymer comprises a structural unit derived from vinylidene fluoride and a structural unit derived from an unsaturated carboxylic acid monomer, and the fluorine-containing polymer has a weight-average molecular weight of 5-9 million, optionally 5-8 million.
Resumen de: WO2025091417A1
The present application provides a polymer, a preparation method, a negative electrode sheet, a secondary battery, and an electric device. The polymer comprises a structural unit derived from an unsaturated carboxylic acid monomer, a structural unit derived from an unsaturated cyano monomer, and a structural unit derived from a flexible monomer. The glass transition temperature of the flexible monomer is -60°C to 0°C, and optionally -55°C to -15°C. The polymer can reduce the warping of electrode sheets and widen processing windows of electrode sheets.
Resumen de: WO2025095362A1
A battery management apparatus according to an embodiment disclosed in the present document may comprise: a data acquisition unit that acquires degradation score data including storage degradation scores according to SOCs and temperatures of batteries of each of a plurality of vehicles and state data of the batteries; and a controller that calculates a first score associated with a degree of cycle degradation of a target battery, which is a battery of a target vehicle from among the plurality of vehicles, in a discharge section of the target vehicle on the basis of the state data, calculates a second score associated with a degree of storage degradation of the target battery in the discharge section of the target vehicle on the basis of the state data of the target battery and the degradation score data, and calculates a stress score of the target battery on the basis of the first score and the second score so as to manage the state of the target battery.
Resumen de: WO2025094682A1
A sealed battery (10) comprises an electrode body, an outer can (20), a sealing body (19), and a gasket (30) interposed between the outer can and the sealing body. The gasket has a protruding portion (31) that protrudes radially inward of the radially inner end of a radially bent portion (20c) that is formed at an opening-side end portion of the outer can and is bent radially inward. A cutout (32) which is continuous on at least a portion of the circumferential direction of the axially outer surface of the protruding portion and has a width in the radial direction so as to include a tip (37) of the protruding portion is formed. The axial thickness of the part of the protruding portion where the cutout is formed is smaller than the thickness of a part of the gasket that is adjacent to the radially outer side of the cutout.
Resumen de: WO2025095241A1
The present invention relates to an elastic sheet for an all-solid-state battery and an all-solid-state battery including same, the elastic sheet comprising a (meth)acrylate-based copolymer, aluminum hydroxide, and inorganic nanotubes.
Resumen de: WO2025095236A1
An all-solid rechargeable battery, and a manufacturing method and device thereof are provided. The all-solid rechargeable battery according to one embodiment comprises: a band-shaped negative electrode; a first solid electrolyte layer and a second solid electrolyte layer, each provided on one of the two sides of the negative electrode; a first positive electrode stacked on the first solid electrolyte layer; and a second positive electrode stacked on the second solid electrolyte layer and spaced apart from the first positive electrode in the longitudinal direction of the negative electrode, wherein the negative electrode is bent and stacked in a zigzag manner, and the first positive electrode and the second positive electrode are alternately arranged between the bent and stacked portions.
Resumen de: WO2025095239A1
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 including: a current collector; a negative electrode coating layer positioned on the current collector; and a binder layer continuously or discontinuously positioned along the boundary of the current collector.
Resumen de: WO2025091829A1
A nail penetration test method and device, which can improve the nail penetration test performance. The method comprises: controlling a penetrating nail to move towards the direction where the penetrating nail is penetrated into a battery cell; and when the voltage between the penetrating nail and a first electrode terminal of the battery cell exceeds a preset voltage, continuing controlling the penetrating nail to penetrate into a predetermined depth.
Nº publicación: WO2025091819A1 08/05/2025
Solicitante:
CONTEMPORARY AMPEREX TECH CO LIMITED [CN]
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Resumen de: WO2025091819A1
An electrode assembly, a processing method therefor, a battery cell, a battery, an electrical apparatus and a cutter assembly. The electrode assembly comprises an active substance-coated part and a tab part. The tab part comprises a plurality of tab pieces, overlapping parts of the plurality of tab pieces forming an overlapping region, and misaligned parts of the plurality of tab pieces forming a misalignment region connected to the overlapping region. The misalignment region comprises a first connection part and a second connection part, the side of the first connection part in a first direction being connected to the active substance-coated part, and the second connection part being connected to the other side of the first connection part in the first direction. In a second direction, the end of the second connection part away from the overlapping region is closer to the overlapping region than the end of the first connection part away from the overlapping region.
BOPI
Sede Electrónica
