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1724
resultados
Última actualización
23/03/2026 [07:26:00]
Resultados 1000 a 1025 de 1724
Resumen de: WO2026051577A1
Provided in the present application are a battery cell, a battery device and an electrical device. The battery cell comprises a housing and an electrode assembly, the electrode assembly being accommodated in the housing. The electrode assembly comprises a first electrode sheet, a second electrode sheet, a solid-state electrolyte layer and an insulating member. The first electrode sheet comprises a first main body region and a first tab, the first tab being provided at one end of the first main body region in a first direction, the first tab comprising a folding portion and a connecting portion connected in sequence, the folding portion being connected to the folding portion of an adjacent first tab, and the connecting portion connecting the folding portion and the first main body region. The polarity of the second electrode sheet is opposite to that of the first electrode sheet. In the first direction, the end of the second electrode sheet close to the first tab is a first end. The solid-state electrolyte layer is provided between the first electrode sheet and the second electrode sheet in a second direction, the second direction intersecting the first direction. The provision of the insulating member reduces the risk of short circuits between the first electrode sheet and the second electrode sheet caused by overlapping between the connecting portion and the first end, thereby effectively improving the reliability of the battery cell.
Resumen de: WO2026051515A1
A battery electrode sheet heating control method and a system. The battery electrode sheet heating control method comprises: controlling a heating device to heat a battery electrode sheet in a heating region on the basis of a preset heating parameter; acquiring the thickness of the heated battery electrode sheet; and when the thickness of the heated battery electrode sheet does not meet a thickness requirement, adjusting the preset heating parameter on the basis of the thickness of the heated battery electrode sheet, so as to control the heating device to heat a following battery electrode sheet on the basis of the adjusted preset heating parameter. By means of the battery electrode sheet heating control method, the thickness of a battery electrode sheet in a heating process can be monitored online, and a preset heating parameter can be flexibly adjusted when it is determined that the thickness of the heated battery electrode sheet does not meet the thickness requirement, thereby correcting the thickness of the battery electrode sheet in a timely manner and improving the thickness uniformity of the heated battery electrode sheet.
Resumen de: WO2026051558A1
A battery cell, a battery device, and an electric device. The battery cell comprises a first cushioning assembly and at least one electrode assembly; each electrode assembly comprises a main body portion and a tab portion connected to at least one side of the main body portion in a first direction, the main body portion comprises a positive electrode portion containing a positive electrode active material, a negative electrode portion containing a negative electrode active material, and a solid electrolyte layer, the positive electrode portion, the solid electrolyte layer, and the negative electrode portion are stacked in the thickness direction of the battery cell, and the first direction is perpendicular to the thickness direction; and the first cushioning assembly is provided on at least one side of the at least one electrode assembly in the thickness direction, and a projection of the main body portion in the thickness direction is located within a projection of the first cushioning assembly in the thickness direction. The use reliability of the battery cell can be improved.
Resumen de: WO2026051379A1
A circuit board assembly, a battery pack, and an energy storage system, relating to the technical field of energy storage. The circuit board assembly is disposed in the battery pack. The circuit board assembly comprises a mounting box, a circuit board body, a wiring harness, and a wiring harness sealing cover. The mounting box is provided with an accommodating cavity and a wire arrangement hole in communication with the accommodating cavity; the circuit board body is disposed in the accommodating cavity; the wiring harness is connected to the circuit board body, and passes through the wire arrangement hole; the wiring harness sealing cover comprises a first body and a sealing portion, the first body being hermetically connected to the mounting box and covering the wiring arrangement hole, the first body being provided with a first sealing recess, and the first sealing recess being in communication with the wire arrangement hole; the first body is further provided with a wiring harness hole that connects the first sealing recess with the wire arrangement hole, the wiring harness passes through the wire arrangement hole, the wiring harness hole and the first sealing recess, and the sealing portion is provided in the first sealing recess and covers the wiring harness hole. The present application, by means of the wiring harness sealing cover sealing the wiring harness hole, and the sealing portion sealing the wiring harness hole, ensures the airtightness of the operating environ
Resumen de: WO2026051336A1
Provided are an electrolyte, a battery and an electric device. The electrolyte comprises an organic solvent and a lithium salt. The organic solvent comprises an ionic liquid, a co-solvent and a diluent. The co-solvent comprises an ether solvent. The diluent comprises one or more of the following structural formulas: wherein in structural formula I to structural formula III, R1-R18 are each independently selected from H, F, a C6-C26 fluorine-substituted phenoxy and a C1-C20 fluorine-substituted alkyl; and R1-R8 are not H at the same time, R9-R14 are not H at the same time, and R15-R18 are not H at the same time. A stable negative electrode SEI is generated by using a cyclic fluoroether with a weak coordination capability. The use of the ionic liquid in cooperation with the other components drives a large number of anions to enter an Li+ solvation sheath layer, and the ionic liquid can also participate in the adjustment and control of a solvation structure by means of a series of weak interactions. In the case of the solvation structure being controlled by the ionic liquid, multiple instances of adjustment and control of the interface are completed. The operating temperature of a battery is widened, the cycling life thereof is long, the energy is high and the power density is high, and the high-voltage cycling stability and safety of the battery is also improved.
Resumen de: WO2026051312A1
An electric device. The electric device comprises a battery pack or batteries, the battery pack comprises batteries, each battery comprises battery cells, each battery cell comprises electrode sheets, and each electrode sheet comprises a current collector and a coating layer. The coating layer is provided on the current collector, a thinned region is formed on the coating layer, and the thickness of the thinned region is less than the thickness of other portions of the coating layer.
Resumen de: US20260071048A1
A lithium-ion battery component with an electrode includes a current collector and a silicon-based active layer. The active layer includes a polyacrylonitrile lattice structure with continuous carbon domains. Silicon particles are distributed within the vacancies of the polyacrylonitrile lattice, which is configured to confine the silicon particles during the volume expansion and contraction that occurs during charge cycling.
Resumen de: US20260070794A1
An electrode material and a preparation method thereof, an electrode plate and a preparation method thereof, a battery, and an electric apparatus. The electrode material includes a substrate and a first inorganic lithium compound layer coated on at least a portion of the surface of the substrate, where the substrate includes a pre-lithiated electrode active material; and the first inorganic lithium compound layer includes at least one of lithium oxide, lithium nitride, lithium carbonate, lithium fluoride, lithium sulfide, or lithium phosphide.
Resumen de: US20260070791A1
According to various embodiments of the present invention, a silicon composite may include: pure silicon grains; and a buffer layer coated on the surface of the pure silicon grains. A method for manufacturing the silicon composite according to various embodiments of the present invention may include: a step of pulverizing metallurgical-grade silicon particles; and a step of forming a buffer layer layer on the surface of the pulverized metallurgical-grade silicon grains. An anode for a secondary battery according to various embodiments of the present invention may include the silicon composite. A secondary battery according to various embodiments of the present invention may include the anode.
Resumen de: US20260071020A1
The present invention relates to a copolymer, and a slurry composition, a separator, and a secondary battery that comprise same, wherein the copolymer comprises, based on 100 wt % of the total weight of the copolymer, 15 wt % or less of a vinylacetate monomer unit, 10-55 wt % of an acrylate-based monomer unit, and 1-10 wt % of an acrylic acid-based monomer unit bound with at least one selected from the group consisting of an alkali metal and an acetate salt compound comprising an alkali metal.
Resumen de: US20260070790A1
Provided are a negative electrode material and a preparation method therefor, a negative electrode plate and a preparation method therefor, an energy storage device, and an electricity-consumption device. The negative electrode material includes hard carbon. The hard carbon has a porous structure and satisfies: 0.32≤Dv50/1000V≤2.40. Dv50 of the hard carbon is in unit of μm; and V represents a total volume of pores in the hard carbon, in unit of cm3/g.
Resumen de: US20260074214A1
A secondary battery with high capacity and a high level of safety is provided. The battery includes a positive electrode including a positive electrode active material and a conductive material. The positive electrode active material contains cobalt, oxygen, magnesium, and nickel. A median diameter of the positive electrode active material is greater than or equal to 1 μm and less than or equal to 12 μm. In EDX line analysis in a depth direction on a region of the positive electrode active material having a plane other than a (001) plane, a distribution of the magnesium partly overlaps with a distribution of the nickel. The conductive material adheres to part of the plane other than the (001) plane of the positive electrode active material.
Resumen de: US20260074205A1
A negative electrode structure for a secondary battery (10) includes: a body (12) that is in a form of a foil or a thin plate and contains zinc as a base material; and a non-electron conductive film (11) provided on at least a first surface of the body (12). The film (11) is stretchable. The film (11) includes: an opening portion (13) formed to expose a portion of a first surface of the body (12); and an electrode reaction inhibiting portion (14) that surrounds the opening portion (13) and inhibits an electrode reaction in the body (12). The film (11) is attached to the body (12) in a liquid-tight manner.
Resumen de: US20260074234A1
Examples of the disclosure include a composite substrate for a rechargeable lithium battery that includes a support layer including a polymer film, and a metal layer disposed on the support layer and including at least one of copper and copper oxide. The metal layer includes a first metal layer on a surface of the support layer and including an adhesion enhancer and a first copper, and a second metal layer on the first metal layer and including a second copper. The adhesion enhancer includes a first moiety chemically bonded to the surface of the support layer and including a hydroxyalkylene group, and a second moiety including an amine group configured to adsorb the first copper.
Resumen de: US20260074209A1
A vanadium oxide composite of the present disclosure includes: a particle including a vanadium oxide; and an electrically conductive material at least partially coating a surface of the particle. A surface coverage of the particle by the electrically conductive material is 30% or more. The vanadium oxide composite has an average particle size of 0.5 μm or more and 5.0 μm or less.
Resumen de: US20260074203A1
A lithium-metal secondary battery, which includes a highly reduction-resistant electrolytic solution, including 2 to 6 mol of electrolyte per L of solvent and also having a lithium deposition dissolution efficiency of 98.5% or more, which lithium deposition dissolution efficiency is the proportion of the amount of redissolution of lithium to the amount thereof deposited on the copper surface, wherein the relative density of a lithium metal layer in a negative electrode is 40 to 85%. In addition, a lithium-metal secondary battery, which includes a highly oxidation-resistant electrolytic solution, including 2 to 6 mol of electrolyte per L of solvent and also having a voltage of 5.5 V or more when the current density is 0.4 mA/cm2 using lithium as a counter electrode and platinum as a working electrode, wherein the relative density of a lithium metal layer in a negative electrode is 70 to 95%.
Resumen de: WO2026052108A1
Provided in the present invention is a preparation method for a multilayer reinforced alkali-water composite separator, comprising the following steps: step S1: preparing raw materials, the raw materials comprising polysulfone, zirconium dioxide, polyethylene glycol, polyvinylpyrrolidone, potassium chloride, methylpyrrolidone and a PEEK woven mesh; step S2: preparing a slurry; and step S3: preparing a separator. The present invention has the following beneficial effects: a PEEK woven mesh is used as a reinforced skeleton layer, the melting point of a PEEK material is 340°C, while the melting point of pps is about 280°C, such that the heat resistance of the PEEK material is significantly higher than that of a pps mesh cloth, and for future application in high-temperature alkaline electrolytic cells (>100°C), the heat resistance and safety of separators are greatly improved.
Resumen de: WO2026051511A1
The present application provides a lithium-ion secondary battery, a lithium transition metal phosphate material, a method for preparing the lithium transition metal phosphate material, and an electric device, and specifically relates to a lithium-ion secondary battery. The lithium-ion secondary battery comprises a positive electrode sheet, wherein the positive electrode sheet comprises a positive electrode current collector and a positive electrode film layer arranged on at least one surface of the positive electrode current collector. The positive electrode film layer comprises a lithium transition metal phosphate material, and the lithium transition metal phosphate material comprises a lithium transition metal phosphate inner core, a carbon coating layer, and a conductive agent distributed on the surface of the carbon coating layer, wherein the carbon coating layer at least covers part of the surface of the inner core; the conductive agent comprises a linear conductive agent and/or a flaked conductive agent; and at least part of the conductive agent is embedded in the carbon coating layer. In the present invention, the lithium transition metal phosphate is modified by a high-electron-conductivity material, such that the electronic conductivity of the lithium transition metal phosphate is effectively improved, thereby improving the high-rate charge and discharge capability of a battery cell.
Resumen de: WO2026051580A1
Disclosed in the present application are a battery cell, a battery device, and an electric device. The battery cell comprises a housing, an electrode assembly, and a first electrode terminal and a second electrode terminal having opposite polarities. The housing has a first wall, wherein the first wall is made of steel, and the thickness of the first wall is greater than or equal to 0.2 mm and less than or equal to 1.5 mm. The electrode assembly is disposed inside the housing. In a first direction, the first electrode terminal and the second electrode terminal are spaced apart on the first wall, and the first electrode terminal and the second electrode terminal are electrically connected to the electrode assembly; the first direction is the lengthwise direction of the first wall. In the first direction, the center-to-center distance between the first electrode terminal and the second electrode terminal is a, and the length of the first wall is b, satisfying 40%≤a/b≤90%. The technical solution provided in the present application can effectively improve the reliability of the battery device.
Resumen de: WO2026051308A1
The present application relates to the technical field of batteries, and provides a battery cell, a manufacturing method, a manufacturing device, a battery apparatus, and an electric apparatus. The present application provides a battery cell. The battery cell comprises an electrode assembly, support spacers, and electrode terminals. The electrode assembly comprises a plurality of first tabs stacked in a first direction. The support spacers are stacked with the plurality of first tabs in the first direction, and the support spacers are connected to the plurality of first tabs by means of a first welding portion. The electrode terminals are connected to the plurality of first tabs and the support spacers by means of a second welding portion, wherein the projections of the first welding portion and the second welding portion on a plane perpendicular to the first direction at least partially overlap. In this way, the connection reliability of the tabs and the connection terminals can be improved, and the presence of the support spacers can provide support for the first tabs and improve the current-carrying capacity of the first tabs, thereby increasing the energy density of the battery.
Resumen de: WO2026051282A1
The present application relates to a cyclic aging test method, apparatus and system for a battery module, and to the technical field of energy storage tests. The method comprises: in a cyclic aging test, successively performing a charging operation and a discharging operation on a battery module; and, at the end of the discharging operation on the battery module, separately performing discharging operations on battery cells in the battery module. Using the solution of the present embodiment can reduce the test duration of cyclic aging, allowing for cyclic aging tests of short test duration for battery modules.
Resumen de: WO2026051309A1
The present application provides a positive electrode sheet and a preparation method therefor, and a battery. The positive electrode sheet comprises a positive electrode current collector, a first positive electrode active coating and a second positive electrode active coating, wherein in the first positive electrode active coating, the mass ratio of a first lithium manganese iron phosphate active material to a nickel cobalt manganese ternary active material is 80-90:8-15; and the second positive electrode active coating comprises a second lithium manganese iron phosphate active material. The areal density ρ1 of the first positive electrode active coating and the areal density ρ2 of the second positive electrode active coating satisfy: ρ1≥240 g/m2; ρ2≥240 g/m2; and |ρ1-ρ2|≤5 g/m2.
Resumen de: WO2026051275A1
The present application provides a separator and a preparation method therefor. The separator comprises a substrate layer and a heat-resistant layer located on at least one surface of the substrate layer, wherein the substrate layer comprises a polyolefin, and the heat-resistant layer comprises polymer fibers and inorganic ceramic particles; and the separator satisfies the following conditions: 1≤BL50/BW50≤6, 0.8≤Equation≤6, 0.1 μm≤BL50≤0.6 μm, and 0.04 μm≤TL50≤0.2 μm. According to the present application, adjusting dimensions of internal structural pores of a substrate layer and a heat-resistant layer reduces rigidity mismatch between the heat-resistant layer and the substrate layer, thereby increasing a rupture temperature of the separator, and mitigating the problem of separators easily fracturing when subjected to high-temperature treatment for an extended period of time. Moreover, this also greatly reduces the common occurrence of separator curling after heat-resistant layer coating, addresses the problem of separators being prone to powder shedding when stretched or subjected to external impact, and improves the thermal safety performance of the separator.
Resumen de: US20260070789A1
Disclosed is a method for synthesizing lithium iron phosphate using anhydrous amorphous iron phosphate. The method includes the following steps: mixing an anhydrous amorphous iron phosphate, a lithium source, an organic carbon source, and a liquid alcohol to obtain a wet mixture; grinding the wet mixture to obtain a slurry, and subjecting the slurry to spray drying to obtain a lithium iron phosphate precursor powder; and calcining the lithium iron phosphate precursor powder in a protective gas atmosphere to obtain an olivine lithium iron phosphate. An anhydrous amorphous iron phosphate is used as a raw material.
Nº publicación: US20260070470A1 12/03/2026
Solicitante:
HYUNDAI MOTOR COMPANY [KR]
KIA CORP [KR]
Hyundai Motor Company,
Kia Corporation
Resumen de: US20260070470A1
A method for controlling fuel cell power generation may comprise: obtaining at least one or more of a vehicle speed limit of a forward driving road, whether there is a gradient and gradient data as forward driving information; calculating a total amount value of expected battery output energy based on the obtained forward driving information; and determining a fuel cell power generation output value in a current driving segment in order to charge or discharge a battery based on the total amount value of the expected battery output energy.
BOPI
Sede Electrónica
