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1000
results.
Updated on
16/07/2026 [07:55:00]
Results 550 to 575 of 1000
Absstract of: US20260194575A1
Provided is a battery pack capable of conveniently diagnosing, by itself, the degree of degradation of the internal resistance of a battery. A battery pack includes: a battery; contactors; an AC constant current source supplying an AC constant current with a predetermined frequency to the battery; an AC voltmeter detecting the value of a voltage between a positive electrode and a negative electrode when the AC constant current is supplied to the battery; and a control unit supplying an AC constant current to the battery by controlling the AC constant current source, calculating the internal resistance of the battery on the basis of the value of the voltage detected by the AC voltmeter, and diagnosing the degree of degradation of the battery on the basis of the internal resistance.
Absstract of: WO2026144247A1
Provided in the present application are a cylindrical secondary battery and an electronic apparatus. The cylindrical secondary battery comprises an electrode assembly, the electrode assembly comprising a first electrode sheet, with the first electrode sheet comprising a first current collector and a first material layer, wherein the number of winding turns of the first material layer is N, with 15≤N≤70; and in a winding direction of the electrode assembly, the first material layer sequentially comprises a first region and a second region. The first region is located from the first turn to the 0.75N-th turn of the first material layer, and a plurality of first recesses are provided on the surface of the first region; and the second region is located from the 0.8N-th turn to the N-th turn of the first material layer, and a plurality of second recesses are provided on the surface of the second region. The above arrangements are conductive to reducing the following safety risks of the electrode assembly: an inner-turn electrode sheet collapsing due to an excessive compaction force and an outer-turn electrode sheet fracturing due to an excessive tensile stress, thereby resulting in burrs and thus short circuits.
Absstract of: WO2026143897A1
The present invention belongs to the technical field of solid-state electrolytes, and provides an oxide solid-state electrolyte and a preparation method therefor, an all-solid-state battery and an electric device. The chemical formula of the electrolyte is Aa-bMbXcTi2-cZ dP3-dOe, wherein a=1-2, b=0-1, c=0-1, d=0-1.5, and e=(12-d)-12; A comprises any one of Li, Na and K; M comprises at least one of Na, K, Rb, Cs, Be, Mg, Ca, Sr and Ba; X comprises at least one of Al, Ga, In, La, Y, Sc, Fe and Cr; Z comprises at least one of B, S, Si, V, Tc, Re, As, Xe, W, Se, Nb and Mn; and A is different from M, and b, c and d are not 0 at the same time. By subjecting key lattice sites in the electrolyte to doping modification, the ionic conductivity is improved.
Absstract of: WO2026144902A1
The present application discloses a venting assembly, comprising: a venting member, a plurality of gas guide members, and a plurality of gas baffles. The gas guide members are arranged in a venting cavity of the venting member and correspond to gas inlets; the gas baffles are arranged at exits of the gas guide members; when the gas baffles are at a first position, the gas baffles block openings of the corresponding gas guide members; when the gas baffles are at a second position, the gas baffles unblock the openings of the corresponding gas guide members, and the gas baffles cut off a flow path of the venting cavity. The venting assembly of the present application aims to solve the problem that high-temperature substances in venting assemblies are prone to accumulation during thermal runaway of cells, and achieves constraint and guidance of flow of the high-temperature substances and gas to specified directions, so that the high-temperature substances and gas are rapidly vented and are not prone to accumulation, thereby avoiding further thermal runaway of adjacent cells. The present application also discloses a battery module and a battery pack.
Absstract of: WO2026145820A1
The present invention relates to the technical field of battery production lines. Disclosed are a battery production line and a battery manufacturing method. The battery production line specifically comprises: a cell processing island, capable of implementing loading, OCV testing, adhesive application, and stacking processes of cells; a module processing island, capable of implementing the assembly and compression molding of cell groups; a module packing island, capable of implementing grabbing of a cell modules into a pack and limiting the size of the modules in the process; an adhesive application island, capable of implementing cleaning and adhesive application at the bottom of the pack; an air tightness testing island, capable of implementing air tightness testing of the packed battery modules and a liquid cooling plate; a welding island, capable of implementing a welding process of an integrated cover plate on the pack; a torque setting island, capable of implementing tightening and torque setting of bolts on the pack; and a plurality of automated guided vehicles, capable of transporting products between the functional islands, and implementing process flow switching between CTP products and large module products by means of different paths, so as to achieve the compatibility between the CTP products and the large module products. The present invention aims to realize flexible switching between CTP products and large module products, so as to adapt to rapid changes and d
Absstract of: WO2026143716A1
The present application belongs to the technical field of energy storage, and provides a lithium-replenishing agent. The lithium-replenishing agent comprises: a lithium-rich lithium ferrite material and a coating layer that coats the surface of the lithium-rich lithium ferrite material, wherein the material of the coating layer comprises lithium pyrophosphate. The present application is beneficial for solving the technical problems of the poor air stability, relatively poor safety, etc., of lithium-rich positive electrode materials in the related art, and thus can effectively replenish lithium.
Absstract of: WO2026143715A1
The present application belongs to the technical field of energy storage, and provides a lithium-replenishing agent. The lithium-replenishing agent comprises lithium phosphite and a coating layer that coats the surface of the lithium phosphite, wherein the material of the coating layer comprises iron boride. The present application is beneficial for solving the problems of relatively poor safety and stability, high costs, the generation of residues during lithium replenishing, etc., of lithium-replenishing materials in the related art.
Absstract of: AU2025204369A1
The invention relates to the technical field of battery management and discloses an active equalization architecture for a multi-branch parallel battery system and a control method to solve the problem of capacity deviations in the prior art. The active equalization architecture includes a battery system, a bidirectional DC/DC module and a vehicle-mounted low-voltage battery module. The battery system includes a plurality of first-stage architectures connected in parallel, a plurality of second-stage architectures connected in parallel and in one-to-one correspondence with the first-stage architectures, and a third-stage architecture. The first-stage architectures are battery packs, the second-stage architectures are battery distribution units (BDUs), and the third-stage architecture is a high-voltage box electrically connected to each of the BDUs. The bidirectional DC/DC module is electrically connected to the high-voltage box. The vehicle-mounted low-voltage battery module is electrically connected to the bidirectional DC/DC module. The invention realizes charge of low-SOC branch battery packs of the battery system and discharge of high-SOC branch battery packs, such that active equalization of the capacities of the branch battery packs is realized, and recharge of low-voltage batteries is also realized. The invention relates to the technical field of battery management and discloses an active equalization architecture for a multi-branch parallel battery system and a contro
Absstract of: WO2026144109A1
The present application provides a positive electrode material, and a preparation method therefor and the use thereof. The positive electrode material comprises a core and a carbon coating layer coated on at least part of a surface of the core; the molecular formula of the core is NaxFeyMZBa(PO4)2(P2O7), wherein M is a transition metal doping element; 3.8≤x≤4.2, 2.5≤y≤3, 0≤z≤0.5, and 0.00001≤a≤0.0005; in the phase composition of the core, the mass content percentage of Na4Fex(PO4)2P2O7 is greater than or equal to 89%, the mass content percentage of NaFePO4 is 1-8%, the mass content percentage of Na2FeP2O7 is 2-9%, and the mass content percentage of NaFe(P2O7) is 0.2-1.5%; and in the positive electrode material, the mass content percentage of the carbon coating layer is 1-5%. The positive electrode material has excellent electrical conductivity, and when same is used in a battery, the charge-discharge capacity of the battery can be improved.
Absstract of: WO2026144507A1
The present application is applicable to the technical field of batteries, and provides a battery apparatus (10) and an electric apparatus, the battery apparatus (10) comprising a case body (2) and a battery cell array (1), wherein the case body (2) comprises two first inner walls (2111) opposite to each other along a first direction (Y), and the maximum distance between the two first inner walls (2111) along the first direction (Y) is a first size (L1); and the battery cell array (1) is disposed between the two first inner walls (2111), the battery cell array (1) comprises a plurality of battery cells (11) arranged in an array of M rows and N columns, and in the battery cell array (1), the battery cells (11) in each column are arranged along the first direction (Y), and the battery cells (11) in each row are arranged along a second direction (X), wherein the maximum size of the battery cells (11) along the first direction (Y) is a second size (L2), and an electrode terminal (111) is provided at at least one end of the battery cells (11) along the first direction (Y); M≥1, and N≥1, with both M and N being positive integers; the second size (L2)*(M)/the first size (L1)∈0.846, 0.921); and the first direction (Y) intersects the second direction (X). In this way, the maximum temperature and energy density of the battery apparatus (10) can be within an optimal range.
Absstract of: WO2026144506A1
The present application is applicable to the technical field of batteries. Provided are a battery apparatus (10) and an electric apparatus. The battery apparatus (10) comprises a case body (2) and a battery cell array (1). The case body (2) comprises two first inner walls (2111) opposite to each other along a first direction (X), and the maximum distance between the two first inner walls (2111) along the first direction (X) is a first size (L1); and the battery cell array (1) is disposed between the two first inner walls (2111), the battery cell array (1) comprises battery cells (11) arranged in an array of M rows and N columns, and in the battery cell array (1), the battery cells (11) in each row are arranged along the first direction (X), and the battery cells (11) in each column are arranged along a second direction (Y), wherein the maximum size of the battery cells (11) along the first direction (X) is a second size (L2), and an electrode terminal (111) is provided at at least one end of the battery cells (11) along the second direction (L2); and M≥1, and N≥1, with both M and N being positive integers, and the second size (L2)*N/the first size (L1)∈0.771, 0.947. In this way, both a high heat dissipation capability and a high energy density can be achieved for the battery apparatus (10).
Absstract of: WO2026143589A1
The present application relates to the technical field of energy storage, and provides a lithium supplementing agent, comprising: a lithium-rich material, the lithium-rich material comprising an inner core and a coating layer coating the surface of a lithium-rich lithium iron oxide material, the inner core comprising a lithium-rich lithium iron oxide material, and the material of the coating layer comprising a composite lithium vanadium phosphate material. The present application facilitates solving of the technical problems in the related art of poor stability and relatively poor safety stability of lithium-rich positive electrode materials in the air.
Absstract of: US20260196852A1
0000 An energy storage system comprises an energy storage node that includes a plurality of battery storage elements and a control subsystem to receive battery data from the battery storage elements. The energy storage system further includes a power conversion system (PCS) and a control system coupled to the energy storage node and the PCS. The control system, the control subsystem, or both are configured to: receive or store battery charge and discharge characteristics of the battery storage elements during a plurality of operating conditions of the battery storage elements, the PCS, or both; and run the battery storage elements of the energy storage node at one or more selected operating conditions of the plurality of operating conditions based on the battery charge and discharge characteristics to reduce an imbalance in state of charge among the battery storage elements of the energy storage node.
Absstract of: US20260196674A1
0000 A buffer member, a battery cell, a battery, and an electrical apparatus. The buffer member is used inside the battery cell, and the battery cell includes an electrode assembly. The buffer member includes: a first surface and a second surface which are arranged opposite to each other; and through channels penetrating through the first surface and the second surface, where the buffer member can be compressed for buffering the expansion of the electrode assembly, and the through channels are used for increasing the compressibility of the buffer member.
Absstract of: WO2026143805A1
Disclosed in the present invention are a lithium battery packaging aluminum-plastic film and a preparation process therefor. The lithium battery packaging aluminum-plastic film comprises: a nylon layer, an aluminum foil layer, and a polypropylene film layer. An outer adhesive layer is arranged between the nylon layer and the aluminum foil layer, and an inner adhesive layer is arranged between the aluminum foil layer and the polypropylene film layer. The inner adhesive layer is composed of the following components in parts by weight: 100 parts of maleic anhydride-modified styrene, 10-20 parts of chlorinated polypropylene butene, 2-5 parts of hydrogenated bisphenol A epoxy resin, 1-3 parts of a curing agent, 0.5-1 part of a tackifying resin, 2-5 parts of benzyl dimethylamine or pyridine, 0.5-2 parts of 3,5-diethyltoluenediamine, 0.2-1 part of an antioxidant, and 200-300 parts of an organic solvent. In the present invention, the stability of the adhesive strength between the aluminum foil layer and the polypropylene film layer exceeds 48 hours under a high-temperature hot water bath at 60°C, improving the high temperature resistance and high humidity resistance of the aluminum-plastic film, and improving the reliability and weather resistance of the lithium battery packaging aluminum-plastic film.
Absstract of: WO2026144347A1
Disclosed in the present application are a negative electrode sheet and a secondary battery comprising same. The negative electrode sheet comprises a current collector and an active material layer provided on at least one surface of the current collector, and the active material layer comprises a first active material layer and a second active material layer, wherein the first active material layer comprises first silicon-carbon particles, and the second active material layer comprises second silicon-carbon particles. The average particle size of the first silicon-carbon particles is d1, and the average particle size of the second silicon-carbon particles is d2, wherein d1 and d2 satisfy the relationship: 0.3
Absstract of: WO2026144165A1
The present application provides a positive electrode active material and a preparation method therefor, a positive electrode sheet, and a battery. The positive electrode active material satisfies the following condition: Formula 1, wherein I(111), I(222), I(400), and I(440) are all not equal to 0. In the positive electrode active material provided by the present application, by means of formula 1, the degree of exposure of the (222) and (111) crystal planes relative to the (110) and (100) crystal planes is defined, which can improve the lithium-ion conduction rate and dynamic performance of lithium nickel manganese oxide, thereby significantly improving the rate performance and discharge capacity of the corresponding battery.
Absstract of: WO2026144756A1
The present application relates to the technical field of secondary batteries, and in particular relates to a silicon-based electrode active material, an electrode composite active material, a preparation method and the use. The silicon-based electrode active material comprises silicon-based particles, a bonding layer and an electrically conductive substance, wherein the conductivity of the electrically conductive substance is larger than that of the silicon-based particles, and the electrically conductive substance is attached to the silicon-based particles by means of the bonding layer and can be kept attached to the silicon-based particles during the expansion and shrinkage process of the silicon-based particles.
Absstract of: WO2026145479A1
A vehicle (100)-based battery thermal management method, a vehicle (100), an electronic device (1000), and a storage medium. The method comprises: step 101: acquiring a current battery temperature of a target vehicle; step 102: acquiring navigation information of a remaining route of the target vehicle; step 103, on the basis of the navigation information, respectively calculating the battery heat generation amount corresponding to each road segment after the target vehicle passes through each road segment; step 104: on the basis of the battery temperature and the battery heat generation amount corresponding to each road segment, calculating an actual battery temperature after the target vehicle passes through each road segment; and step 105: performing thermal management on a battery of the target vehicle on the basis of the actual battery temperature. The method can predict the temperature information of the battery during the remaining route of the vehicle (100), thereby avoiding unnecessary battery heating or cooling, and reducing the energy consumption of the vehicle (100).
Absstract of: WO2026144971A1
Provided in the present application are a negative electrode current collector and a preparation method therefor, a secondary battery and an electric device. The negative electrode current collector comprises a base material layer, a composite layer and a current collector layer, wherein the composite layer is arranged on at least one side of two opposite sides of the base material layer, and the composite layer comprises a metal bonding layer, an electrically conductive layer, a first protective layer and a second protective layer, which are stacked in sequence. The metal bonding layer is adjacent to the base material layer, the current collector layer is arranged on the second protective layer, and the thickness of the current collector layer is greater than that of the composite layer. The electrically conductive layer comprises copper, and the first protective layer comprises a metal material. The thickness of the second protective layer is less than or equal to that of the first protective layer, and the second protective layer comprises a metal or non-metal material having reducibility lower than that of the first protective layer. The negative electrode current collector provided in the present application has fewer defect points and improved performance.
Absstract of: WO2026145532A1
A battery. The battery comprises a negative electrode sheet, which comprises a silicon-based material, wherein the degree of sphericity of the silicon-based material is 0.66-0.99. The ratio S/H of the area S of a first surface of the battery to the thickness H of the battery is 800-3000, the unit of the area S of the first surface is mm2, the unit of the thickness H of the battery is mm, the first surface is a surface having the maximum area among six surfaces of the battery, and the thickness H of the battery is less than or equal to 3.5 mm. The battery can achieve a smaller thickness, a higher energy density, a lower thickness expansion rate and a higher cycle stability.
Absstract of: US20260194592A1
An impedance measuring device includes a plurality of electrical paths connected to both ends of each battery cells connected in series, an AC current generating unit that allows an AC current to flow through the battery cells, a voltage fluctuation measuring unit that measures voltage fluctuations in response to the AC current, a connection operation unit that, when measuring the impedance of a cell to be measured, causes the AC current of the AC current generating unit to flow through a pair of electrical paths that are on the positive and negative sides of the cell to be measured, and connects the voltage fluctuation measuring unit to a pair of electrical paths that are also on the positive and negative sides of the cell to be measured, but that are a different combination from the pair of electrical paths through which the AC current of the AC current generating unit flows, and a calculation unit that calculates the impedance value of the cell to be measured based on an amplitude and a voltage fluctuation of the AC current.
Absstract of: WO2026144899A1
The present application discloses a secondary battery, a battery pack, and an electric device. The secondary battery has a first direction and a second direction intersecting each other, and comprises a case, an electrode assembly and a top cover assembly, wherein the case has an accommodating cavity; the electrode assembly is arranged in the accommodating cavity; the top cover assembly comprises a top cover sheet, a lower insulating member and electrode terminals; the top cover sheet is connected to the case, and the top cover sheet is provided with a first liquid injection hole; the lower insulating member is connected to the side of the top cover sheet facing the electrode assembly; the electrode terminals pass through the top cover sheet and the lower insulating member; the lower insulating member comprises a body and a flow-disturbing portion; the body is provided with a second liquid injection hole in communication with the first liquid injection hole; the flow-disturbing portion is connected to the side of the body away from the top cover sheet, the flow-disturbing portion is spaced apart from the electrode terminals, the side of the flow-disturbing portion facing one electrode terminal is provided with a liquid outlet, and the liquid outlet is in communication with the second liquid injection hole; and in the second direction, the minimum distance between the liquid outlet and the electrode terminal is L1, the size of the top cover sheet is L2, and it is satisfied: 0.
Absstract of: WO2026143990A1
The present application relates to the technical field of batteries, and discloses a separator and a secondary battery. In the separator of the present application, an organic coating containing inorganic particles is provided on an organic substrate. By controlling the size distribution of the inorganic particles and regulating the relationship between the size of the inorganic particles in the coating and the coating thickness, the overall adhesion of the coating can be effectively improved, and the separator has good dimensional stability at different temperatures, good electrolyte wettability, and high ion transport efficiency. When the separator is applied to the secondary battery, long cycle life and high safety can be achieved.
Nº publicación: US20260196684A1 09/07/2026
Applicant:
CONTEMPORARY AMPEREX TECH CO LIMITED [CN]
CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Absstract of: US20260196684A1
0000 A tab threading device for a battery, and an assembly apparatus are disclosed. The battery comprises a case and an electrode assembly, wherein the case is provided with an accommodating cavity and through holes. The tab threading device is used for guiding tab parts of the electrode assembly to extend out through the through holes. The tab threading device comprises a clamping mechanism and a driving mechanism, wherein the clamping mechanism comprises a first clamping member and a second clamping member; and the driving mechanism is configured to drive the first clamping member and/or the second clamping member to move, so that the first clamping member and the second clamping member can clamp the tab parts to pass through the through hole and extend from the accommodating cavity.
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