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1807
results.
Updated on
12/05/2025 [07:18:00]
Results 825 to 850 of 1807
Absstract of: WO2025087112A1
An electrode sheet, a battery cell and an electric device. The electrode sheet comprises a current collector, a first transition layer, a second transition layer, two active material layers, a first conductive member, a second conductive member and two protection members, wherein the current collector comprises a support layer, and a first conductive layer and a second conductive layer, which are arranged on two sides of the support layer in a first direction; the first transition layer is arranged on the surface of the first conductive layer that faces away from the support layer; the second transition layer is arranged on the surface of the second conductive layer that faces away from the support layer; one of the two active material layers is arranged on the first transition layer, and the other one is arranged on the second transition layer; the first conductive member is arranged on the first conductive layer; the second conductive member is arranged on the second conductive layer; the first conductive member and the second conductive member form, by means of welding, a plurality of weld marks arranged in a second direction, and at least one weld mark is connected to the current collector; and the two protection members are respectively located at two sides of the current collector in the first direction. The electrode sheet can improve the reliability.
Absstract of: WO2025086496A1
A lithium supplement and a preparation method therefor, a positive electrode sheet, and a battery. The lithium supplement comprises: a core, wherein the core comprises LiaMbOc, wherein a is 2-6, b is 0-4, c is 1-6, and M comprises at least one of Mg, Al, Si, Ca, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, Ru, and Sn; and a coating layer, wherein the coating layer at least covers part of the surface of the core, and the coating layer contains at least one of a silazane compound, a siloxane compound, a sulfonic acid silane compound, and a carbodiimide compound.
Absstract of: WO2025086550A1
A positive electrode material, and a preparation method therefor and a use thereof. The preparation method comprises the following steps: (1) injecting, in a concurrent flow, a nickel-cobalt-manganese ternary salt solution, a precipitant, and a complexing agent into a base solution, and controlling the stirring speed to perform a co-precipitation reaction to obtain a crack precursor; (2) mixing the crack precursor with a lithium source, and carrying out multi-stage sintering to obtain an oxide precursor; and (3) carrying out heat treatment on the oxide precursor to obtain the positive electrode material. With a simple approach, the disadvantages of precursor cracks are fully converted to advantages; and by means of multi-stage sintering, the interior of a positive electrode particle can have a phase change without adding a fluxing agent, so as to form a structure having a single crystal shell and a polycrystalline interior.
Absstract of: WO2025086549A1
Provided in the present application are a lithium-rich manganese-based precursor material, and a preparation method therefor and the use thereof. The preparation method comprises the following steps: in a protective gas atmosphere, mixing a nickel-cobalt-manganese mixed salt solution, a precipitator solution and a complexing agent solution, subjecting same to a co-precipitation reaction until particles enter a growth stage, starting the introduction of an oxygen-containing gas, and then continuously subjecting same to the co-precipitation reaction, so as to obtain a lithium-rich manganese-based precursor material. In the preparation method of the present application, by introducing the oxidizing atmosphere in the growth stage of the precursor material, the problems of compact particle growth, being prone to agglomerating and poor morphology in the existing preparation process for a lithium-rich manganese precursor material are solved, and a lithium-rich manganese-based precursor material having high dispersity and a high specific surface area is obtained.
Absstract of: WO2025086548A1
Disclosed in the present invention are a mixed ion conductor material, and a preparation method therefor and the use thereof. The chemical general formula of the mixed ion conductor material is L1+x+yMxN2-xRx(ZO4)3, wherein 0≤x≤3, 6.5＜y≤36, and 6.5＜y/(1+x)≤9. The mixed ion conductor material is obtained by adding an alkali metal substance to react with the raw materials during preparation process, wherein the alkali metal substance comprises one or more of compounds containing ions Li+, Na+, K+, Rb+ or Cs+. When the mixed ion conductor material is applied to a secondary battery, the intersection point of a first cycle is 0.4-0.6 V, the intersection point of a second cycle is 0.6-0.8 V, the side reaction specific capacity is 50-200 mAh/g, the side reaction specific capacity of an electrochemical reaction platform is significantly reduced, and the energy density of a battery is improved.
Absstract of: WO2025089838A1
The present invention relates to a pouch film comprising a sealant layer, a barrier layer, a second outer layer, and a first outer layer which are sequentially laminated, wherein the second outer layer comprises a nylon-based resin, the thickness of the second outer layer is 35-60 μm inclusive, and the tensile strength ratio of the barrier layer and the second outer layer measured according to the measuring condition below is 0.9-1.2 inclusive. Measuring condition The barrier layer and the second outer layer of the pouch film are peeled so as to make respective test pieces having a width of 15 mm, and then, at room temperature, the test pieces are fixed between two jigs of a tensile tester (UTM) (initial jig gap 50 mm), and then the stroke (mm) and strength (N) of the test pieces are measured while pulling each test piece in the MD direction at a measuring speed of 50 mm/min. The x-axis in a graph derived from the measured values is stroke (mm), and the y-axis is tensile strength (N), and the tensile strength of the barrier layer and the second outer layer when the stroke is 5 mm is measured.
Absstract of: WO2025089866A1
The present invention relates to a composition for coating an uncoated portion of a battery, a method for coating an uncoated portion of a battery by using the composition for coating an uncoated portion of a battery, and an electrode comprising the composition for coating an uncoated portion of a battery. More particularly, the present invention relates to: a composition for coating an uncoated portion of a battery, having excellent heat resistance, excellent electrolyte stability, and excellent adhesive strength between an uncoated portion coating layer and an uncoated portion, thus enabling a stable coating layer to be formed; a method for coating an uncoated portion of a battery; and an electrode having an uncoated portion that has been coated.
Absstract of: WO2025089888A1
Provided is a battery pack comprising: a plurality of cell units, each comprising one or more battery cells: one or more spacers disposed between the plurality of cell units and each provided with one or more venting channels through which gas discharged from one or more of the battery cells can flow; and one or more cooling members arranged to face at least one cell unit from among the plurality of cell units, wherein the plurality of cell units and one or more cooling members are arranged along a first direction, and the plurality of cell units and one or more of the spacers are arranged along a second direction intersecting the first direction.
Absstract of: WO2025089590A1
The present invention relates to a cathode active material for a lithium secondary battery, the material comprising a discrete-particle-type lithium metal oxide, which contains 50 to 70 mol% of nickel on the basis of the total number of moles of metals excluding lithium, and satisfying equations 1 and 2. Equation 1 3.0 μm ≤ Dv50 ≤ 5.0 μm Equation 2 Dv50 - Dn50 ≤ 2.0 μm In equations 1 and 2, Dv50 is a volume-based average particle diameter of the lithium metal oxide, and Dn50 is a number-based average particle diameter of the lithium metal oxide.
Absstract of: WO2025086987A1
A collecting pipe fitting (10), a thermal management assembly (100), a battery (1000), and an electric device. The collecting pipe fitting (10) comprises: a pipe body (11); first flow channel connectors (12) and second flow channel connectors (13), wherein there are multiple second flow channel connectors (13), and in the extension direction of the pipe body (11), at least two second flow channel connectors (13) are respectively located on two sides of the first flow channel connectors (12); and a separation structure (14), wherein the separation structure (14) is arranged inside the pipe body (11), the separation structure (14) separates the first flow channel connectors (12) and the second flow channel connectors (13) inside the pipe body (11), and the multiple second flow channel connectors (13) are communicated inside the pipe body (11).
Absstract of: WO2025086646A1
An electrode assembly (3) and a processing method, a battery cell (102), a battery (100), and an electrical device, pertaining to the technical field of batteries. The electrode assembly (3) comprises an active material coating part (31) and a tab part (32) connected to the active material coating part (31). The tab part (32) comprises a first lamination part (321) and a second lamination part (322) which are connectedly provided. The first lamination part (321) is formed by connecting an overlapping area (Z1) of a laminated multi-layer tab piece (320). The second lamination part (322) is formed by bending, in a direction approaching the first lamination part (321), a first part (3221) in an offset area (Z2) of the laminated multi-layer tab piece (320) towards a remaining second part (3222), and then laminating and connecting same together.
Absstract of: WO2025087456A1
A jelly roll assembly, comprising a positive electrode sheet and a negative electrode sheet, wherein a separator is provided between the positive electrode sheet and the negative electrode sheet; the jelly roll assembly is provided with a central hole located in a winding center; an inclined section is provided at a side edge of the end head of the end of the positive electrode sheet that is close to the central hole, two ends of the inclined section in the lengthwise direction thereof are respectively located at edges of two sides of the positive electrode sheet in the widthwise direction thereof, alternatively, the side edge of the end head is a convex edge, or the side edge of the end head is a concave edge; and/or an inclined section is provided at a side edge of the end head of the end of the negative electrode sheet that is close to the central hole, alternatively, the side edge of the end head is a convex edge, or the side edge of the end head is a concave edge. The inclined section, the convex edge and the concave edge are each provided with a portion that is inclined relative to the axial direction of the central hole. The inclined portions can decompose stress in the circumferential direction of the electrode sheets and the axial direction of the central hole, and since the exterior of the jelly roll assembly is bound by a housing, the component stress in the axial direction of the central hole can act on the housing and be offset, and the remaining component stress
Absstract of: WO2025086512A1
Disclosed in the present application are a heat exchange device, a case, a battery and an electric device. The heat exchange device comprises a heat exchange main body, wherein the heat exchange main body is provided with a flow channel; and the flow channel has a lengthwise direction and a width direction, which intersect each other, and the flow channel comprises a first section and a second section, which are arranged in the lengthwise direction, at least one side of the first section in the width direction going beyond the second section to form a recessed region. The direction of a fluid after same flows into the recessed region in the lengthwise direction of the flow channel changes relative to the direction of the fluid before same enters the recessed region. Since the first section goes beyond the second section in the width direction, the fluid is subjected to an outward bias force in the width direction; and under the action of the bias force, impurities such as brazing flux are brought into and accumulated in the recessed region, and no longer flow into other regions of the heat exchange device along with the fluid, thereby preventing the brazing flux from adversely affecting the operation of the other regions of the heat exchange device.
Absstract of: WO2025086427A1
The present invention provides an electrolyte, a lithium ion battery, and an electric device. The electrolyte comprises a solvent, a lithium salt, and an additive, wherein the solvent comprises a fluoroether, a carbonate ester compound, and a carboxylate ester compound, and the mass ratio of the fluoroether, the carbonate ester compound, and the carboxylate ester compound is (10-20):(40-65):(20-45); the additive comprises a first additive, and the first additive is a tetranitrile compound as shown in formula I. Compared with the prior art, in the electrolyte of the present invention, the fluoroether is added in the solvent, so that an SEI membrane having better toughness can be formed on one side of a metal lithium negative electrode, thereby improving the stability of a metal lithium negative electrode interface; in addition, the tetranitrile compound is further added as the additive, thereby effectively improving the stability of a positive electrode, and achieving a synergistic effect with the fluoroether to effectively balance the transport rate of lithium ions, effectively mitigate the problem of lithium dendrites prone to occurring in a metal lithium negative electrode system, and thus improve the cycle life and the safety performance of a battery.
Absstract of: WO2025086458A1
The embodiments of the present disclosure belong to the technical field of batteries. Provided are an explosion-proof valve patch, a cover plate assembly, a battery cell, a battery and an electric device. The explosion-proof valve patch comprises a patch body; a first rubber ring arranged on a first surface of the patch body and provided with a first gap; and a second rubber ring arranged on the first surface of the patch body, located on the inner side of the first rubber ring and provided with a second gap, the first gap and the second gap being staggered.
Absstract of: WO2025089453A1
The present document relates to an energy storage system (ESS) including multi-level battery management systems. The ESS comprises: a plurality of first-level battery management systems (BMSs) for monitoring voltage state information and temperature state information about each of a plurality of battery groups; a second-level BMS configured to generate report information on the basis of the voltage state information received from the plurality of first-level BMSs and perform an emergency response control operation on the basis of the temperature state information; and a third-level BMS configured to determine whether to perform balancing on the basis of the report information received from the second-level BMS, and transmit a balancing command, dependent on the determination about whether to perform balancing, to the second-level BMS.
Absstract of: WO2025089596A1
Provided are a positive electrode and a lithium secondary battery, the positive electrode comprising a positive electrode current collector and a positive electrode active material layer, which is disposed on one or both surfaces of the positive electrode current collector and contains a positive electrode active material, a gamma sulfur-fibrous carbon-based material composite, and a sulfide-based solid electrolyte, wherein the positive electrode active material comprises Li2S, a Li2S composite, or a combination thereof, and the gamma sulfur-fibrous carbon-based material composite has a structure in which monoclinic gamma phase sulfur (S) is disposed on a fibrous carbon-based material.
Absstract of: WO2025089613A1
A battery module according to one embodiment of the present invention comprises: a battery cell stack in which a plurality of battery cells are stacked; a module frame for accommodating the battery cell stack; and a phase change material layer located between the battery cell stack and the module frame. The phase change material layer comprises a phase change material and has a mesh structure. Venting holes are formed in the module frame.
Absstract of: WO2025089622A1
A battery diagnosis apparatus according to an embodiment disclosed in the present document may comprise: a slave BMS for generating unit state information by measuring the state of a battery unit; a management unit for generating pack state information by measuring the state of a battery pack, and comprising a control unit for controlling an operation of a relay related to power supply of the battery pack on the basis of at least one of the unit state information and the pack state information; and a master BMS for receiving the unit state information and the pack state information from the management unit, and monitoring battery cells included in at least one of the battery unit and the battery pack on the basis of at least one of the unit state information and the pack state information.
Absstract of: WO2025089624A1
The positive electrode slurry of the present invention is a positive electrode slurry for manufacturing a positive electrode for a lithium secondary battery. The positive electrode slurry comprises: a positive electrode active material; a conductive material; a binder; an aliphatic organic acid having 5 or less carbon atoms; and a solvent. The positive electrode slurry contains at least 0.02 parts by weight and less than 0.1 parts by weight of the aliphatic organic acid on the basis of 100 parts by weight of the total solid content of the positive electrode active material, the conductive material, the binder, and the aliphatic organic acid. The positive electrode slurry has a viscosity of 5,000-27,500 cP at room temperature.
Absstract of: WO2025087018A1
A sodium ion battery positive electrode material, and a preparation method therefor and a use thereof. The chemical general formula of the sodium ion battery positive electrode material is NaaNibFecMndMeAfO2, wherein the element M and the element A are doped elements, the bond energy of the M-O bond of the element M is greater than 500 kJ/mol, the ion radius of the element A is greater than or equal to 0.06 nm, and the valence state of the element A is greater than or equal to +3; and the XRD pattern of the sodium ion battery positive electrode material has no impurity phase diffraction peak at 42.5°-43.5°. The element M is doped at the position of an interstitial atom, so as to restrain oxygen and limit release of oxygen in a sodium removal state; and the element A may preferentially replace a transition metal at a transition metal position for supporting, thereby ameliorating the gas production problem of the sodium ion battery positive electrode material during cycle.
Absstract of: WO2025087034A1
A current collecting component (3), a thermal management assembly (30), a battery (100), and an electric device. The current collecting component (3) comprises a device body (31); the device body (31) is provided with a main inlet (311), a main outlet (312), a plurality of sub-inlets (313), and a plurality of sub-outlets (314); the plurality of sub-outlets (314) are communicated with the main outlet (312); an extension flow channel (315) is formed inside the device body (31); one end of the extension flow channel (315) is communicated with the main inlet (311), and the other end of the extension flow channel (315) extends away from the main inlet (311); one of the plurality of sub-inlets (313) is communicated with the main inlet (311), and the remaining sub-inlets (313) are communicated with the extension flow channel (315); the quantity of the sub-inlets (313) is equal to that of the sub-outlets (314), and the sub-inlets (313) are in one-to-one correspondence to the sub-outlets (314); and the sub-inlets (313) are respectively adjacent to the corresponding sub-outlets (314).
Absstract of: WO2025087000A1
Provided are an electrolyte, a battery, and an electric device. The electrolyte comprises a redox couple, the redox couple only has one oxidation potential, and the oxidation potential of the redox couple is 3.4-4.2 V.
Absstract of: WO2025086994A1
A battery pack, comprising a battery module (20) and a heat exchange member (10). The battery module (20) comprises at least one row of battery groups; the heat exchange member (10) comprises a heat exchange main body (100), and a plurality of protective protrusions (130) which are spaced apart from one another and are all connected to the heat exchange main body (100); the heat exchange member (10) is attached to one surface of the battery module (20); and all the protective protrusions (130) extend away from the battery module (20). The structural form of the protective protrusions (130) achieves a relatively light weight and relatively low costs, so that the energy consumption of an electric vehicle is relatively low, and the endurance of the electric vehicle is ensured.
Nº publicación: WO2025086452A1 01/05/2025
Applicant:
CONTEMPORARY AMPEREX TECH CO LIMITED [CN]
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Absstract of: WO2025086452A1
The present application pertains to the technical field of batteries, and provides a battery cell, a battery, and an electrical device. The battery cell comprises a positive electrode sheet, a negative electrode sheet, and a separator film. The positive electrode sheet comprises a positive electrode active material area, the negative electrode sheet comprises a negative electrode active material area, the negative electrode sheet and the positive electrode sheet are stacked in a first direction, and the separator film is located between any adjacent positive electrode sheet and negative electrode sheet. The projection of the negative electrode sheet on a first plane perpendicular to the first direction completely falls within the range of the projection of the positive electrode sheet on the first plane, and the projection of the positive electrode active material area on the first plane falls with the range of the projection of the negative electrode active material area on the first plane.
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