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1000
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Updated on
16/07/2026 [07:55:00]
Results 475 to 500 of 1000
Absstract of: WO2026144252A1
The present application provides a cylindrical secondary battery and an electronic device. The cylindrical secondary battery comprises an electrode assembly, the radius of a central hole of the electrode assembly is b mm, and the radius of the electrode assembly is a mm; the electrode assembly comprises a first electrode sheet, the first electrode sheet comprises a first current collector and a first material layer, and along the winding direction of the electrode assembly, the first material layer sequentially comprises a first region and a second region; along the radial direction of the electrode assembly, the distance between the first region and the winding center of the electrode assembly is c1 mm, 1.5b≤c1≤5.5b, and a plurality of first recesses are provided on the surface of the first region; and the distance between the second region and the winding center of the electrode assembly is c2 mm, 0.8a≤c2≤a, and a plurality of second recesses are provided on the surface of the second region. The present application facilitates reduction of the safety risks of collapse of an electrode sheet on an inner ring of the electrode assembly due to excessive pressing force and short circuits caused by breakage of an electrode sheet on an outer ring due to excessive tensile stress, and generation of burrs.
Absstract of: WO2026144544A1
In order to solve the problem of solid-state electrolytes of existing batteries being prone to side reactions at interfaces, increasing interface impedance, and affecting charge and discharge performance of the batteries, provided are a solid-state electrolyte and a preparation method therefor, a battery, and an electric device. The solid-state electrolyte comprises an inorganic solid-state electrolyte layer and a composite electrolyte layer. The composite electrolyte layer comprises a polymer electrolyte base film and a filler, the filler being distributed in the polymer electrolyte base film, and the filler comprising one or more of an oxide solid-state electrolyte, a sulfide solid-state electrolyte, and a halide solid-state electrolyte; and the inorganic solid-state electrolyte layer comprises one or more of an oxide solid-state electrolyte, a sulfide solid-state electrolyte, and a halide solid-state electrolyte.
Absstract of: WO2026143988A1
The present application belongs to the technical field of batteries, and relates to a positive electrode sheet, a battery comprising same, and an electric device. The positive electrode sheet of the present application comprises a positive electrode current collector and a positive electrode active material layer, which is arranged on at least one surface of the positive electrode current collector, wherein the positive electrode active material layer comprises a positive electrode active material, with the positive electrode active material comprising lithium manganese iron phosphate and a ternary positive electrode material. The positive electrode sheet satisfies: 0.09≤a/b≤5.1, wherein a is the mass percentage content of Ni in the positive electrode active material layer, with the unit thereof being %; and b is the longitudinal wettability of the positive electrode sheet, with the unit thereof being %. In the present application, by compounding LMFP with a ternary positive electrode material and reasonably controlling the content of Ni in the positive electrode active material layer and the longitudinal wettability of the positive electrode sheet, after the positive electrode sheet is applied to a battery, the charging time of the battery in a high-voltage stage can be significantly shortened; moreover, the lithium-ion transport rate and the electron transport rate of the positive electrode sheet in the longitudinal direction are balanced, thereby effectively improving
Absstract of: WO2026144425A1
Provided in the present invention is a compact and lightweight thermal-runaway propagation suppression structure for a lithium-ion battery module. The structure comprises: thermal insulation sleeves, which each cover a battery cell; a high-specific-heat-capacity thermally-conductive frame, in which all battery cells and thermal insulation sleeves are embedded; thermal insulation plates, which are each placed at the top of the high-specific-heat-capacity thermally-conductive frame; and cooling measures, which are arranged on side faces of the high-specific-heat-capacity thermally-conductive frame. The overall lightweight structure in the present invention enables all the battery cells to share one heat dissipation element, thereby increasing the utilization rate of the heat dissipation element; moreover, the structure in the present invention facilitates the uniform heating of each surface of each battery cell in the module, makes full use of the thermal mass of an individual battery cell, and allows all the battery cells in the module to participate in heat sharing. In addition, the frame achieves the function of fixing the battery cells, and no additional battery-cell fixing apparatus is required for assembling the battery module. Therefore, the present invention is conducive to simplifying the structure of the module, providing a thermal-runaway propagation suppression structure with a smaller volume, and reducing the loss of energy density of the battery module caused by s
Absstract of: US20260196464A1
0000 The present disclosure provides a process for preparing an electrode, the process comprising: (a) mixing an active material, a first conductive carbon, and a first binder to obtain a first mixture; (b) high shear mixing the first mixture with a second binder to obtain a second mixture, wherein the second binder is different from the first binder; (c) cooling the second mixture and blending with a second conductive carbon to obtain a third mixture; and (d) jet milling the third mixture and processing it to obtain the electrode. The present disclosure further provides an electrode obtained by the process as disclosed herein, and an electrochemical cell comprising at least one of the electrodes obtained by the process as disclosed herein.
Absstract of: WO2026143906A1
The present application relates to the technical field of batteries. Provided are a positive electrode sheet, a battery, and an electric device. The positive electrode sheet satisfies the formula: 2.5≤H/PD≤4.5, wherein H represents the Mohs hardness grade of the positive electrode sheet, and PD represents the compaction density of the positive electrode sheet.
Absstract of: WO2026145585A1
A lithium-ion secondary battery, comprising a negative electrode sheet, a positive electrode sheet, a separator, and an electrolyte. A charge cut-off voltage of the battery is greater than or equal to 4.48 V; the negative electrode sheet comprises a silicon-carbon material in which the content of a silicon element is 30%-80%; the positive electrode sheet comprises a positive electrode active coating, the positive electrode active coating comprises lithium cobalt oxide, the lithium cobalt oxide comprises an aluminum element, and the mass content of the aluminum element in the positive electrode active coating is 6000 ppm-15000 ppm; the separator comprises an organic coating, and the organic coating faces the positive electrode sheet; the organic coating comprises polymer particles containing a nitrogen element, the thickness of the organic coating is 0.5 μm-4 μm, and the mass content of the nitrogen element in the organic coating is 10.5%-55%; and the electrolyte comprises fluoroethylene carbonate, and the mass content of the fluoroethylene carbonate in the electrolyte is 5%-30%. The battery can have high energy density, fast charging capability, excellent cycle stability, and high-temperature safety performance at a high charge cut-off voltage.
Absstract of: WO2026145536A1
The present disclosure relates to the technical field of batteries, and specifically relates to a silicon-carbon particle, a negative electrode sheet, and a battery. The present disclosure provides a silicon-carbon particle. The surface of the silicon-carbon particle is provided with a recessed portion; the number N of recessed portions on the surface of the silicon-carbon particle is greater than or equal to 1; and the diameter of the recessed portions ranges from 0.05 μm to 5 μm; and the depth of the recessed portions ranges from 10 nm to 5 μm. In the present disclosure, recessed portions are provided on the surface of the silicon-carbon particle, so that the cycling stability and the expansion performance of a silicon-based negative electrode material are improved.
Absstract of: WO2026145724A1
The present application provides a negative electrode slurry, a negative electrode sheet, and a lithium-ion battery. The negative electrode slurry comprises: a negative electrode active material, an electrochemical functional component having a porous structure, and a high-swelling polymer. Thus, the electrochemical functional component having the porous structure can provide more lithium ion transport channels, and can improve ionic conductivity; and the polymer having a high swelling rate can improve the wetting capability of an electrolyte solution to the surface of the negative electrode sheet, reduce interface transfer resistance, and improve the absorption and retention capability of the negative electrode sheet to the electrolyte solution. Therefore, the fast charging performance and cycle performance of the battery can be further improved.
Absstract of: WO2026144200A1
The present disclosure provides a lithium-ion secondary battery and an electric apparatus. A negative electrode sheet of the lithium-ion secondary battery comprises: a negative electrode current collector and negative electrode active material layers. The negative electrode active material layers include a first negative electrode active material layer and a second negative electrode active material layer which are stacked, and the second negative electrode active material layer is located on the side of the first negative electrode active material layer away from the negative electrode current collector. The first negative electrode active material layer comprises a first negative electrode active material, the first negative electrode active material comprises graphite, and the proportion of primary particles in the first negative electrode active material is greater than that of secondary particles; and the second negative electrode active material layer comprises a second negative electrode active material, the second negative electrode active material comprises graphite, and the proportion of secondary particles in the second negative electrode active material is greater than that of primary particles.
Absstract of: WO2026143921A1
A power supply system and a vehicle. The power supply system comprises: an enclosure, a battery and at least one purification device. The battery and the purification device are both arranged in the enclosure. The enclosure comprises at least one exhaust port, an exhaust end of the purification device is connected to the exhaust port of the enclosure, and the exhaust end of the purification device is also in communication with a first cavity of a housing of the purification device.
Absstract of: US20260196700A1
0000 A housing of the battery pack includes a battery compartment and an electrical compartment that are adjacently disposed in a length direction. The battery compartment is configured to accommodate a battery module. The battery module includes a plurality of electrochemical cells. The electrochemical cell is further provided with a vent valve, and the vent valve is located on the top surface or the bottom surface. The electrical compartment is configured to accommodate a power module. In an electrochemical cell of the battery module close to the electrical compartment, a barrier strip is disposed between a surface on which the vent valve is located and an inner wall of the housing. The barrier strip is located on a side of the vent valve facing the electrical compartment, and is configured to isolate the vent valve from the power module.
Absstract of: WO2026145327A1
A thermal management system (100) and a vehicle. The thermal management system (100) comprises: an air conditioning system (70); a first control valve (61), on which a high-pressure heat exchange loop (10), a battery heat exchange loop (20), a radiator loop (30), and a heat exchanger loop (40) are connected, the first control valve (61) being selectively connect one or more of the high-pressure heat exchange loop (10), the battery heat exchange loop (20), the radiator loop (30), and the heat exchanger loop (40), and the air conditioning system (70) exchanging heat with the heat exchanger loop (40) and a heating loop (50); a multi-way pipe (63), at least two ends of the multi-way pipe (63) being connected to the first control valve (61), and another end of the multi-way pipe (63) being connected to the battery heat exchange loop (20); and a condenser (71), an end of the condenser (71) being selectively connected to yet another end of the multi-way pipe (63), and another end of the condenser (71) being connected to the first control valve (61). A plurality of loops are interconnected via the first control valve (61) and the multi-way pipe (63), thereby reducing flow resistance under various operating modes, improving energy utilization, and optimizing the energy utilization efficiency of a heat pump or the heating loop (50).
Absstract of: WO2026144545A1
The present application discloses a secondary battery and an electric device. In the present application, a first positive electrode active material layer and a second positive electrode active material layer are sequentially provided on at least one surface of a positive electrode current collector; and a first additive (Lix1Fe1-y1M1y1Cl4-z1Sez1) and a second additive (Lix2Fe1-y2M2y2Cl4-z2Sez2) are respectively added in the first positive electrode active material layer and the second positive electrode active material layer. By controlling the ranges of y1, z1, y2, and z2 in the first additive and the second additive, the first positive electrode active material layer close to the positive electrode current collector has higher electronic conductivity, and the second positive electrode active material layer distant from the positive electrode current collector has higher ionic conductivity, which facilitates transport of electrons and ions, and effectively improves the rate performance and cycle performance of the secondary battery.
Absstract of: WO2026143920A1
A battery case, a battery pack and a vehicle. The battery case comprises a cold plate (60), a battery frame (10), and a cold plate sealant (70), wherein the battery frame (10) is located on one side of the cold plate (60) and is arranged around the periphery of the cold plate (60). At least one of the cold plate (60) and the battery frame (10) is provided with a sealing groove (1121). Sealing grooves (1121) are formed on the sides of the cold plate (60) and the battery frame (10) that are close to each other. The cold plate sealant (70) is located in the sealing groove (1121). In the direction perpendicular to the extension direction of the sealing groove (1121), the sealing groove (1121) has a first groove edge (1122) and a second groove edge (1123) which are arranged opposite each other. The first groove edge (1122) and the second groove edge (1123) are both located on one side of the groove bottom of the sealing groove (1121).
Absstract of: WO2026144509A1
The present application is applicable to the technical field of batteries. Provided are a battery apparatus (10) and an electrical apparatus. The battery apparatus (10) comprises a box body (2) and a plurality of battery cell assemblies (1). The box body (2) is provided with a first accommodating cavity (201), wherein the first accommodating cavity (201) is provided with a first inner wall (2011), and a second inner wall (2012) connected to the periphery of the first inner wall (2011); and on a projection plane perpendicular to a first direction (Z), the area of the orthographic projection of the first inner wall (2011) is a first area (S). The plurality of battery cell assemblies (1) are arranged in the first accommodating cavity (201) in a second direction (Y), and are arranged in the first direction (Z) with the first inner wall (2011). Each battery cell assembly (1) comprises N battery cells (11) arranged in a third direction (X), wherein the maximum dimension of each battery cell (11) in the third direction (X) is a first dimension (L1), the maximum dimension of each battery cell (11) in the second direction (Y) is a second dimension (L2), and at least one end of each battery cell (11) in the second direction (Y) is provided with an electrode terminal (111); and N≥1, N being a positive integer, and the first area (S)/(N*the first dimension (L1)*the second dimension (L2))∈3, 8. In this way, the battery apparatus (10) can take into account both energy density and tempe
Absstract of: US20260196581A1
0000 The present application discloses a rechargeable lithium battery without a charging port and a manufacturing method thereof. The lithium battery includes a first negative electrode metal casing, a voltage regulation circuit board, a low-voltage positive electrode cap, a high-voltage positive electrode connector, a lithium battery cell, a low-voltage positive/negative electrode insulating spacer, and an insulating housing, wherein an upper end of the first negative electrode metal casing is inwardly provided with a first flange; an upper surface of the voltage regulation circuit board is provided with a negative electrode copper ring and a positive electrode copper ring; the voltage regulation circuit board is welded to an inner side of the first flange of the first negative electrode metal casing through the negative electrode copper ring; and the high-voltage positive electrode connector is arranged on an inner surface of the voltage regulation circuit board.
Absstract of: US20260196575A1
0000 An electrochemical device includes a positive electrode plate. The positive electrode plate includes a positive electrode current collector, a first coating layer, and a positive electrode material layer; the first coating layer is disposed on a surface of the positive electrode current collector; the positive electrode material layer is disposed on a surface of the first coating layer facing away from the positive electrode current collector; the first coating layer includes a first main material and a first binder; the first main material includes a solid-state electrolyte; a carbon material is provided on a surface of the solid-state electrolyte; the first main material has a Dv50 of 50 nm to 200 nm; and the first coating layer has a thickness of 0.5 μm to 2 μm.
Absstract of: US20260196650A1
0000 A battery cell, a battery, and an electric device. The battery cell comprises a shell and a pressure relief notch, wherein the shell is flat and comprises two first walls opposite each other in the direction of the thickness of the shell; and the pressure relief notch is arranged in at least one of the first walls.
Absstract of: US20260196556A1
0000 A poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP)-@polyethylene glycol (PEG)-based electrolyte, a preparation method thereof, and a lithium battery including the same are provided. Two polymer phases are mixed in a solvent to produce a precursor solution, and the precursor solution is continuously stirred at room temperature for thorough mixing, then casted, and subjected to room-temperature drying and high-temperature crosslinking successively under vacuum to produce a polymer-based membrane. The polymer-based membrane is soaked in an electrolyte to produce a target polymer-based electrolyte. The target polymer-based electrolyte is cut into an electrolyte sheet with specific dimensions, and then used to assemble a lithium metal battery. With a “slight crosslinking” strategy proposed herein, polyethylene glycol diamine can be combined with a PVDF-HFP matrix to produce a crosslinked polymer possessing a stable structure without introducing any catalyst or crosslinking agent. This crosslinked polymer can significantly enhance the electrochemical performance, mechanical properties, and chemical/thermal stability of an electrolyte.
Absstract of: WO2026143759A1
Provided in the present invention are a positive electrode material and a preparation method therefor, a positive electrode sheet and a sodium-ion battery. The positive electrode material comprises composite particles, the molecular formula of the composite particles being Na4MxMn1-x/2V(PO4)3-x/3Nx, wherein 0.001≤x≤0.05, M is Li and/or K, and N is selected from one or more of F, Cl, Br and I. In the present invention, specific types of anions and cations having specific contents are synchronously introduced into a polyanionic phosphate positive electrode active material, and the anions and the cations generate a good synergistic effect; therefore, the intrinsic conductivity and structural stability of the positive electrode material are more significantly improved, and the regulation and control of the morphology and size of particles thereof are also achieved, thereby promoting significant improvements in the comprehensive properties such as specific capacity, rate capability, cycling stability and compaction density of the positive electrode material.
Absstract of: US20260193499A1
0000 The present invention relates to a curable and debondable two-part thermally conductive adhesive composition comprising a first part comprising an epoxy resin; an electrolyte; and a thermally conductive filler; and a second part comprising a curing agent; and a thermally conductive filler, wherein the composition further comprises an electrically conductive filler. The composition according to the present invention can be used in battery modules of electric vehicles. And the composition according to the present invention facilitates faster repair and recycling of battery modules of electric vehicles.
Absstract of: US20260196637A1
0000 A battery includes a housing, which is configured to accommodate battery cells; at least two fixing beams, wherein the at least two fixing beams are spaced apart in the housing, a space for accommodating the battery cells being formed between every two adjacent fixing beams; fixing seats arranged on the fixing beams; and limiting members which are connected to the fixing seats on different fixing beams. Connecting the limiting members to different fixing beams enables deformation of the fixing beams to be suppressed by means of the limiting members, thereby enhancing the strength of the fixing beams, and reducing a degree of deformation of the fixing beams along with the expansion of the battery cells. By means of the provision of the fixing seats, the strength at the joints between the limiting members and the fixing beams is enhanced to reduce failures between the limiting members and the fixing beams.
Absstract of: WO2026144383A1
A secondary battery and an electronic device. The second battery comprises a first tab and a first electrode sheet. The first electrode sheet comprises a first current collector and a first active material layer. In the thickness direction of the first electrode sheet, the first active material layer is stacked on the surface of the first current collector. The first current collector comprises a first uncoated area. The first tab is electrically connected to the first uncoated area. The secondary battery further comprises a first adhesive layer. In the thickness direction of the first electrode sheet, the first adhesive layer is bonded between the first tab and the first uncoated area. The first adhesive layer is configured so that adhesive strength is reduced when the temperature rises to a first threshold, enabling the first tab to be at least partially separated from the first uncoated area. The occurrence of short circuits can be reduced, and thermal runaway in the secondary battery can be reduced, thereby improving the safety performance of the secondary battery.
Nº publicación: WO2026143796A1 09/07/2026
Applicant:
SHANGHAI ENERGY NEW MATERIALS TECH CO LTD [CN]
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Absstract of: WO2026143796A1
The present invention relates to a composite current collector, a preparation method therefor and a use thereof. The composite current collector comprises a polymer-based film layer and a metal layer provided on at least one surface of the polymer-based film layer; the polymer-based film layer comprises a metal embedded layer in contact with the metal layer; a strength factor A of the composite current collector is formula (1); and formula (2). In the present invention, a strength factor of the composite current collector is controlled within a certain range, so that the tensile strength of the composite current collector can be significantly improved relative to the tensile strength of the base film. In addition, the composite current collector of the present invention also has good peel strength and low sheet resistance.
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