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1000
results.
Updated on
16/07/2026 [07:55:00]
Results 500 to 525 of 1000
Absstract of: WO2026143898A1
Provided in the present invention are a lithium iron manganese phosphate material, a preparation method therefor, a positive electrode material, and a lithium ion battery. The lithium iron manganese phosphate material comprises a lithium iron manganese phosphate material core and a carbon coating layer covering the surface of the lithium iron manganese phosphate material core, wherein the chemical general formula of the lithium iron manganese phosphate material core is LiFexMnyM1-x-yPO4, wherein 0.80≤x<1, 0
Absstract of: WO2026143903A1
Disclosed in the present application are a support pushing system and method, the support pushing system comprising: a pushing device; an opening and closure device arranged on one side of the pushing device; and a movement device connected to the opening and closure device or a wound core.
Absstract of: US20260194597A1
0000 A battery monitoring device includes: a storage that stores relational data indicating a relationship between a state of a secondary battery and a resistance component that varies with the state of the secondary battery among a plurality of resistance components included in an impedance of the secondary battery; an impedance obtainer that obtains an impedance of a target secondary battery for monitoring; and an arithmetic processor that calculates, based on the impedance obtained by the impedance obtainer, a value of a resistance component that varies with a state of the target secondary battery for monitoring, to estimate the state of the target secondary battery for monitoring, based on the value of the resistance component and the relational data.
Absstract of: WO2026145373A1
The present application relates to the field of lithium-ion batteries, and discloses a breathable membrane-type electrolyte leakage indicator for a lithium-ion battery. The leakage indicator comprises a leakage indicator body and a breathable membrane, and a liquid storage cavity is formed in the leakage indicator body; a vent opening is formed in the leakage indicator body, and the liquid storage cavity is communicated with the outside of the leakage indicator body via the vent opening; the breathable membrane is mounted in the vent opening; the breathable membrane is of a layered structure and comprises a high-strength supporting layer and an organic gas diffusion layer; the organic gas diffusion layer permeates into the high-strength supporting layer to form a permeation composite layer, and the thickness of the permeation composite layer accounts for 0%-100% of the thickness of the high-strength supporting layer. The present application features a simple and reliable structure, an electrolyte can be used as a calibration standard, and a flow stabilization effect is achieved by means of the breathable membrane, enabling electrolyte gas to vent at a stable rate, thereby improving the accuracy and reliability of calibration, standardization, and spot inspection of existing liquid leakage detection devices.
Absstract of: US20260196666A1
0000 An electrode-integrated separator for lithium secondary battery, a method for manufacturing the same, and a lithium secondary battery including the same are disclosed. The electrode-integrated separator for a lithium secondary battery includes a porous layer stacked on an electrode substrate. The porous layer includes a polymer binder and inorganic fine particles dispersed within the polymer binder. The inorganic fine particles include two or more types of inorganic fine particles having different green densities measured under the same pressure conditions.
Absstract of: WO2026144466A1
The present invention relates to an electrode sheet preparation apparatus and an electrode sheet preparation method. The electrode sheet preparation apparatus comprises: a first unwinding mechanism, which is configured to unwind and output a first material strip, wherein the first material strip comprises a current collector and a positive electrode coating layer, the current collector is provided with a plurality of coating regions spaced apart from each other and a non-coating region surrounding the plurality of coating regions, and the positive electrode coating layer is located in the coating regions; a cutting mechanism, which is configured to cut a second material strip, such that a plurality of first regions spaced apart from each other and a continuous second region are formed on an insulating layer of the second material strip, wherein the first regions correspond to the coating regions on a one-to-one basis, and the second region corresponds to the non-coating region; and a laminating mechanism, which is configured to laminate the second region of the insulating layer onto the non-coating region of the first material strip to form a positive electrode material strip having a plurality of positive electrode sheet regions, wherein each positive electrode sheet region comprises at least part of one coating region and at least part of the non-coating region surrounding the coating region.
Absstract of: US20260196662A1
0000 A battery includes a pack case and an upper case. The pack case accommodates a cell assembly. The upper case is coupled to the pack case to cover an upper part of the cell assembly seated inside the pack case and includes a protruding part at a lower end that presses against the upper part of the cell assembly seated in the pack case.
Absstract of: WO2026144467A1
Disclosed are a secondary battery and an electric device. The secondary battery comprises a housing and an electrode assembly accommodated in the housing. The electrode assembly comprises a first electrode sheet and a second electrode sheet having opposite polarities, and a separator used for separating the first electrode sheet from the second electrode sheet. The first electrode sheet comprises a first current collector and a first active material layer; the first current collector comprises a first folding portion, a connecting portion, and a second folding portion which are connected in sequence; the first folding portion comprises first straight sections and first bent sections which are alternately connected; and the second folding portion comprises second straight sections and second bent sections which are alternately connected. In a first direction, each second straight section connected to the connecting portion comprises a first portion beyond the corresponding first straight section, and an empty foil region electrically connected to the housing is provided at each first portion. In a second direction, the second electrode sheet is arranged between any two adjacent straight sections, and the first active material layer is arranged between the first current collector and the second electrode sheet. The battery structure is conducive to reducing the internal resistance of the secondary battery, thereby improving the charge/discharge rate and the energy density of th
Absstract of: WO2026144384A1
The present application relates to a secondary battery and an electronic device. The secondary battery comprises a first tab 30 and a first electrode sheet 21; the first electrode sheet 21 comprises a first current collector 211 and a first active material layer 212; along a first direction Z, the first active material layer 212 is stacked on the surface of the first current collector 211; the first current collector 211 is provided with a first empty foil region 211a; and the first tab 30 is partially provided in the first empty foil region 211a. The secondary battery further comprises a first adhesive layer 50, and along the first direction Z, the first adhesive layer 50 is bonded between the first tab 30 and the first empty foil region 211a. The first tab 30 comprises a first surface 31 facing the first current collector 211; a plurality of first protruding portions 30a protrude from the first surface 31; and in the direction from the first tab 30 to the first empty foil region 211a, the width of the first protruding portions 30a in a second direction X decreases, and at least part of the first protruding portions 30a are in contact with the first empty foil region 211a. The occurrence of short circuits in the secondary battery can be reduced, and the first protruding portions 30a are configured to more easily pierce the first adhesive layer 50 so as to be in direct contact with and electrically connected to the first current collector 211, which is conducive to improving
Absstract of: WO2026145664A1
The present application provides a battery cell assembly and a battery. The battery cell assembly comprises a first separator, a negative electrode sheet, a second separator, and a positive electrode sheet that are sequentially stacked and wound. The first separator and the second separator are separately bonded to the negative electrode sheet to form a first composite area. The positive electrode sheet is bonded to at least part of the second separator to form at least one second composite area. The length of the second composite area is less than that of the first composite area. In the present application, a positive electrode sheet, a negative electrode sheet, and a separator are stacked, so that a jelly roll is prevented from being tightly wound due to respective tensions during winding. A first composite area can strengthen the bonding between the separator and the negative electrode sheet, so that the separator and the negative electrode sheet do not slide relative to each other. A second composite area can fix the positive electrode sheet at a set position to form a compensation area, that is, a certain gap is reserved between the positive electrode sheet and the negative electrode sheet in a non-composite area, so that the gap between the electrode sheets in a circular arc-shaped area of the jelly roll is increased, and thus space is reserved for cycle expansion of the battery, thereby effectively solving the problem of cycle expansion and deformation of the battery.
Absstract of: US20260196565A1
A secondary battery, including a negative electrode plate and an electrolyte, where the negative electrode plate includes a negative electrode active material layer. The negative electrode active material layer includes graphite and a silicon-carbon material, and an average sphericity of the silicon-carbon material is 0.81 to 0.95. The electrolyte includes ethylene carbonate, propylene carbonate, ethyl propionate and propyl propionate, where based on a mass of the electrolyte, a mass percentage of the ethylene carbonate is a %, a mass percentage of the propylene carbonate is b %, a mass percentage of the ethyl propionate is c %, a mass percentage of the propyl propionate is d %, and (a+b)/(c+d) is in a range of 0.23 to 1.51.
Absstract of: WO2026143908A1
The present invention relates to an all-solid-state battery cell having a three-dimensional interpenetrating lithium-ion conduction network, a preparation method therefor and a use thereof. In the present invention, positive electrode powders A, B and C having different particle sizes and compositions are sequentially, uniformly and electrostatically sprayed onto a mold; then a sulfide electrolyte layer is formed on a composite positive electrode layer by means of spraying; composite negative electrode powders D and E that are uniformly mixed and have different particle sizes and compositions are sequentially, uniformly and electrostatically sprayed onto the surface of the electrolyte layer; finally, the powders are integrally compacted by means of warm isostatic pressing so as to obtain an all-solid-state battery cell, and the all-solid-state battery cell is assembled into a solid-state battery. The present invention provides a new battery structure design, and by introducing a low-viscosity thermoplasticizer and an electrostatic dry spraying technique to construct the three-dimensional interpenetrating lithium-ion conduction network, significantly enhances lithium ion migration efficiency, and also enhances the stability of an interface between an electrode and a solid-state electrolyte, so as to reduce the interface impedance of a sulfide solid-state battery, thereby achieving better capacity retention, longer cycle life, and better safety performance.
Absstract of: WO2026145500A1
The present invention provides a jelly roll, comprising a positive electrode sheet, a separator and a negative electrode sheet. The positive electrode sheet, the separator and the negative electrode sheet are stacked in sequence and then wound in the direction from a starting end to a tail end to form the jelly roll. The negative electrode sheet comprises a negative electrode current collector and a negative electrode active material layer coated on the surface of the negative electrode current collector. The negative electrode sheet comprises an empty foil region, a single-sided coated region and a double-sided coated region which are connected in sequence. The negative electrode active material layer is not provided on both sides of the empty foil region. The negative electrode active material layer is not provided on the side of the single-sided coated region facing away from the positive electrode sheet. The negative electrode active material layer is provided on both sides of the double-sided coated region. The empty foil region and the single-sided coated region are located at a starting end of the negative electrode sheet. A starting end of the positive electrode sheet is stacked on one side of the single-sided coated region. The jelly roll and the negative electrode sheet satisfy the relational expression: 0≤(a+b)*ab+(cd)2≤2.2, wherein a=W/h1/18, b=1.2*W/L, c=5/h2, and d=x/1.73. In the present invention, when the jelly roll satisfies the relational expression: 0�
Absstract of: WO2026143949A1
Disclosed in the present invention are a temperature control structure and an apparatus. The temperature control structure comprises a plurality of valve structures; the temperature control structure further comprises a base body, a base body input pipe, a temperature control input pipe, a temperature control output pipe and a base body output pipe; the base body comprises a plurality of valve holes provided on the base body; the plurality of valve holes comprise a supply valve hole and a return valve hole; a bottom end face of the supply valve hole is provided with a supply valve channel, and a bottom end face of the return valve hole is provided with a return valve channel; corresponding valve structures are hermetically mounted on both the supply valve hole and the return valve hole, and valve seats of the two valve structures are respectively provided corresponding to the supply valve channel and the return valve channel; one end of the base body input pipe is communicated with the supply valve channel; one end of the temperature control input pipe is communicated with the supply valve hole; one end of the temperature control output pipe is communicated with the return valve channel; one end of the base body output pipe is communicated with the return valve hole. The present invention reduces the use of connecting pipes and sealing components, and also solves the problem of micro-leakage of a temperature control medium.
Absstract of: WO2026144459A1
The present disclosure relates to the technical field of batteries and discloses a lithium iron phosphate positive electrode material and a preparation method therefor, and a lithium-ion battery. The lithium iron phosphate positive electrode material comprises primary particles and secondary particles. The secondary particles are formed by agglomeration of the primary particles. The lithium iron phosphate positive electrode material satisfies formula I and ρ% = 50% to 90%, where FSSS refers to the Fisher particle size of the lithium iron phosphate positive electrode material, DBET refers to the specific surface area particle size of the lithium iron phosphate positive electrode material, and ρ% refers to the relative density of the secondary particles. The present disclosure provides a lithium iron phosphate positive electrode material that satisfies both formula I and ρ% = 50% to 90%. The lithium iron phosphate positive electrode material has good dispersibility, a low degree of agglomeration, and a high compaction density. A positive electrode sheet prepared therefrom has the characteristics of a uniform areal density and a high peel strength, and therefore, a prepared battery has a high specific capacity and cycle stability.
Absstract of: WO2026143869A1
The present invention belongs to the technical field of batteries. Disclosed are a negative electrode sheet, a secondary battery and an electrical apparatus. In the present application, by controlling the volume average particle diameter Dv50 of a first negative electrode active material and a second negative electrode active material in a negative electrode active material, the gradation ratio (X) of the negative electrode active material, the tensile strength of the negative electrode sheet, and the content of a binder in a negative electrode active material layer, the following relationship is satisfied: 0.69≤(A+B)×X/(N×C)≤160, which can effectively improve the adhesion and conductivity of the negative electrode sheet, effectively inhibit the expansion and contraction of the negative electrode active material, and further improve the stability of the negative electrode active material, such that the negative electrode active material can be uniformly distributed on the negative electrode sheet, thereby shortening migration and diffusion paths of lithium ions in negative electrode active materials, reducing the impedance of secondary batteries, and improving the cycle performance of secondary batteries.
Absstract of: WO2026145843A1
A coating separator and a preparation method therefor, and a secondary battery, relating to the technical field of battery separators. The coating separator comprises a base membrane and a coating layer covered on one side or two sides of the base membrane. The coating later comprises inorganic particles. After the coating separator is cut off by a serrated knife, cracks appear in the coating near the fracture and/or the coating near the fracture falls off. Any crack and/or falling satisfies the following characteristics: 1) the length of the crack in the MD direction is less than 20 μm, and the width of the crack is less than 20 nm; and 2) the area of the falling area is less than 1 μm2. By changing the preparation raw materials and process parameters of the base membrane in a base membrane section, and adjusting the ratio of two binders and the relationship between the BET of the inorganic particles to the total mass ratio of the binders in a coating section, the changing and the adjustments are used in cooperation to ameliorate the problems of cracks and falling of the cut separator, such that the cracks and falling are significantly ameliorated, thereby avoiding short circuits of a battery cell.
Absstract of: WO2026143928A1
The present invention provides a battery cover plate assembly and a secondary battery. The battery cover plate assembly comprises: a cover plate body provided with pressing block assembly areas and cover plate protrusions; and press-fit assemblies, the press-fit assemblies being correspondingly connected to the pressing block assembly areas, and any press-fit assembly comprising: a pressing block provided with a press-fit hole, each press-fit hole being formed on one side of the corresponding pressing block in the length direction; an upper plastic member comprising a fitting portion and a clearance recess, wherein each fitting portion is provided at the edge of the corresponding upper plastic member, two sides of the fitting portion respectively abut against the corresponding cover plate protrusion and the corresponding pressing block, and each cover plate protrusion is embedded in the corresponding clearance recess; and a riveting member sequentially passing through and connected to the corresponding pressing block and the corresponding upper plastic member through the corresponding press-fit hole. In the present invention, close fit with cover plate protrusions is achieved, so that sufficient expansion draft allowance is provided for a cover plate, thereby achieving the purpose of avoiding warping of the cover plate. Compared with the existing conventional battery cover plate structure, the present application has the advantages of an ingenious structural design, a signifi
Absstract of: US20260196502A1
0000 A doped manganese-based Prussian white positive-electrode material, a preparation method therefor, and use thereof are provided. The doped manganese-based Prussian white positive-electrode material of the present invention has a chemical formula of Na
Absstract of: US20260196492A1
0000 The present invention discloses a positive-electrode material, a positive-electrode plate, a sodium-ion battery, manufacturing methods therefor, and uses thereof. The positive-electrode material of the present invention presents an O3 phase and has a chemical formula of Na
Absstract of: WO2026143797A1
The present invention provides a composite metal foil, a preparation method therefor and a use thereof. The composite metal foil has a suitable amount of metal embedded in a base layer, enabling tighter bonding to a metal layer covering the surface of the base layer, and supplementing the strength of a base film and improving the bending resistance of the base film, so that the composite metal foil has better peel strength. The composite metal foil, especially a copper foil, can be used as a negative electrode current collector to realize lightweighting of a battery product, not only improving the peel strength of the copper foil, but also improving the conductivity of the copper foil in a local area. Moreover, a copper metal embedded structure also provides a rapid thermal response interface, thereby improving the safety of the battery.
Absstract of: WO2026143985A1
The present application relates to the technical field of batteries, and relates to a battery and an electric device. The battery in the present application comprises an electrolyte and a positive electrode sheet; the positive electrode sheet comprises a positive electrode current collector and a positive electrode active material layer provided on at least one surface of the positive electrode current collector; the positive electrode active material layer contains a positive electrode active material; the positive electrode active material comprises lithium iron phosphate; the electrolyte comprises tris(dimethylvinylsilyl)phosphate. By regulating the mass ratio a of tris(dimethylvinylsilyl)phosphate in the electrolyte, the contact angle b of the positive electrode active material layer and a solution, and the powder resistivity c of the positive electrode active material layer to satisfy a specific relational expression, the battery has fewer side reactions and low gas production in a cycle process, and the ion and electron conductivity of the positive electrode sheet is high, so that the battery has both low gas production and low DCR.
Absstract of: WO2026144043A1
The present application provides a secondary battery and an electric device. The secondary battery satisfies the following relationship: 0.3≤A/100×(N+100P)≤25, wherein Appm represents the mass content of Al in the positive electrode active material; P% represents the mass percentage content of a pyridine additive in the electrolyte; and N% represents the mass percentage content of a nitrile additive in the electrolyte. In the present application, by correlating and defining the relationship between the key additive in the electrolyte and the content of Al in the positive electrode active material, the complexing action between the nitrile additive and pyridine additive in the electrolyte and the positive electrode active material can be effectively enhanced, which can improve the film-forming stability of a battery during charging, thereby significantly enhancing the high-temperature stability of the battery.
Absstract of: US20260196550A1
0000 The tape forming jig includes a forming plate including a plate body, and a forming hole formed through the thickness direction of the plate body and configured such that the diameter thereof becomes narrower from a first surface of the plate body to a second surface opposite to the first surface. The tape forming jig also includes a forming block provided to be able to enter the forming hole with a cross-section corresponding to the shape of the forming hole as viewed from the outside of the second surface of the plate body. A jelly roll taping device includes the tape forming jig. A jelly roll taping method utilizes the tape forming jig.
Nº publicación: US20260196691A1 09/07/2026
Applicant:
LG ENERGY SOLUTION LTD [KR]
LG ENERGY SOLUTION, LTD.
Absstract of: US20260196691A1
0000 A battery cell includes an electrode assembly including a first electrode and a second electrode with a separator interposed therebetween, the first electrode, the second electrode and the separator being wound around a winding axis in a winding direction to define a core and an outer peripheral surface, the first electrode including a first uncoated portion, which is not coated with an active material layer; a battery housing having an opening at one side, the battery housing being configured to accommodate the electrode assembly through the opening; and a current collector including a support portion disposed on the electrode assembly and a tab coupling portion extending from the support portion and coupled to the first uncoated portion, the current collector having a channel or a path configured to discharge a flame at a boundary of the support portion and the tab coupling portion when thermal runaway occurs.
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