Resumen de: WO2025167064A1
Provided are a positive electrode sheet, a solid-state battery, an electric device and a preparation method. The positive electrode sheet comprises a positive electrode current collector and an active film layer located on at least one side of the positive electrode current collector, wherein the active film layer comprises a positive electrode active region and a filling region located on at least part of the periphery of the positive electrode active region. The positive electrode active region comprises positive electrode active particles and a sulfide solid electrolyte, and the filling region comprises a positive electrode stabilizer. The positive electrode sheet has significantly improved air stability, and can also significantly inhibit the escape of hydrogen sulfide gas.
Resumen de: WO2025167049A1
A battery and an electrical apparatus, belonging to the technical field of batteries. The battery comprises a box body assembly and a plug-in assembly; the box body assembly comprises a first wall, the first wall having a first through hole; the plug-in assembly is mounted at the box body assembly, and comprises a connector and an adapter; the connector comprises a mounting portion and a power connection portion, the mounting portion being located at an outer side of the first wall; the power connection portion comprises an external power connection terminal located at a side of the mounting portion distant from the first wall, and an internal power connection terminal located at a side of the mounting portion near an internal portion of the box body assembly; the internal power connection terminal is disposed opposite the first through hole; the adapter is at least partially located outside the box body assembly, and supports the mounting portion, causing the mounting portion to be separate from the first wall.
Resumen de: WO2025167045A1
Disclosed in the present disclosure are a battery cell winding system and a winding parameter collection method. The battery cell winding system comprises an upper computer and a control apparatus, the control apparatus being configured to control a winding process and acquire winding parameters, and the upper computer being configured to acquire, from the control apparatus and at a first time interval, a first indication signal that indicates whether winding has started, and acquire, when the first indication signal indicates that winding has started, winding parameters from the control apparatus at a second time interval, until the winding is completed, wherein the first time interval is greater than the second time interval.
Resumen de: WO2025167564A1
The present invention provides a solid-state electrolyte, a preparation method therefor and a use thereof, and an electrochemical device. The preparation method comprises: performing ion exchange on a molecular sieve -Na in an acidic solution, so that cations in pores of the molecular sieve -Na are exchanged into protons; after washing and drying, evaporating water molecules to form a molecular sieve -H, and combining oxygen in an aluminum-oxygen tetrahedron of the molecular sieve -H with the protons to form OH; exchanging OH in the molecular sieve -H into halogen X1 (X1=F, Cl, Br, or I) by means of a halogenation reaction, so as to obtain a molecular sieve -X1; and calcining the molecular sieve -X1 and molten AX2 to obtain the solid-state electrolyte, the pH of the acidic solution being greater than 1.2 and less than 2.1, AX2 comprising an alkali metal halide and/or an alkali metal chalcogenide, and the calcination temperature ranging from 300°C to 500°C. The solid-state electrolyte has high ionic conductivity, and can be independently used as a solid-state electrolyte.
Resumen de: WO2025167600A1
The present disclosure relates to the technical field of power batteries, and provides a battery upper cover, a battery pack, and a vehicle. The battery upper cover comprises an upper cover body. The upper cover body is compression-molded as one piece from a plurality of prepreg layers arranged in a stacked manner, and the upper cover body comprises a fireproof zone and a non-fireproof zone surrounding the peripheral edge of the fireproof zone. At least one of the plurality of prepreg layers in the fireproof zone is a fireproof prepreg layer.
Resumen de: WO2025167592A1
A secondary battery, a manufacturing method therefor, and an electronic apparatus. The secondary battery comprises a casing, a pole assembly, and an electrode assembly. The electrode assembly is accommodated in the casing. The casing is provided with a first main wall, a second main wall, and a first side wall. The first main wall and the second main wall are oppositely arranged in a first direction. The first side wall is connected between the first main wall and the second main wall. The pole assembly comprises a pole, and the pole penetrates through the first side wall. The electrode assembly comprises a main body portion and a first tab group extending from the main body portion. The first tab group comprises at least two first tabs and at least two second tabs. The at least two first tabs are folded in the direction of the first main wall and stacked to form a first folded part. The at least two second tabs are folded in the direction of the second main wall and stacked to form a second folded part. The second folded part and the first folded part are both electrically connected to the pole. By means of the above solution, the volumetric energy density of the secondary battery can be improved.
Resumen de: WO2025167106A1
The present application relates to the technical field of batteries, and provides a battery and an electric device. The battery comprises a case, a plurality of battery cell groups, thermal management components, and a protective element. The case is provided with a first wall in a first direction. The plurality of battery cell groups are accommodated in the case, the plurality of battery cell groups are arranged in a second direction, each battery cell group comprises at least one battery cell, and the second direction intersects with the first direction. In the second direction, each thermal management component is arranged between two adjacent battery cell groups, and the thermal management component is configured to exchange heat with the battery cells. The protective element is arranged between the first wall and the plurality of battery cell groups in the first direction, and the protective element is configured to transfer external force borne by the first wall to the battery cell groups so as to protect the thermal management components, thereby reducing the impact of collision force generated on the first wall on the thermal management components, reducing the risk of leakage and other failures of the thermal management components during use, improving the use reliability of the battery, and prolonging the service life of the battery.
Resumen de: WO2025167058A1
A battery cell (10), a battery (1), and an electrical apparatus. In the battery cell (10), an insulating housing (13) comprises a base piece (131), main folding pieces (132), and side folding pieces (133). On a first side (135), transition corners (136) are connected to the main folding pieces (132) by means of first fold lines (1361) and connected to the side folding pieces (133) by means of second fold lines (1362), the base piece (131) is connected to extension folding pieces (134) by means of third fold lines (1341), the third fold lines (1341) are staggered with the straight lines where the first fold lines (1361) are located and/or staggered with the straight lines where the second fold lines (1362) are located when the insulating housing (13) is in an unfolded state, and the extension folding pieces (134) cover gaps between the corresponding side folding pieces (133) and the base piece (131). On this basis, the insulation effect of the insulating housing (13) can be improved.
Resumen de: WO2025167055A1
A battery and an electric device. The battery (2) comprises a case (202), a battery cell group (7) and a blocking structure (8), wherein the case (202) is provided with an accommodating cavity; and the battery cell group (7) is located in the accommodating cavity, and the battery cell group (7) comprises at least one column of a plurality of battery cells (3) arranged in a first direction, each battery cell (3) comprising a first wall (31) and a second wall (32) connected to and intersecting with each other, the first wall (31) being provided with a pressure relief mechanism, and a gap (203) being provided between the second wall (32) and the case (202). When thermal runaway occurs in the battery, high-temperature ejecta is ejected from the pressure relief mechanism of the first wall (31); and at least part of the blocking structure (8) is located within the gap (203) to prevent at least some of emissions discharged via the pressure relief mechanism from entering the gap (203).
Resumen de: WO2025167529A1
The present application relates to the technical field of negative electrode materials of batteries, and in particular relates to a porous composite elastomer and silicon-carbon, and preparation methods therefor and the use thereof. The present application provides a porous composite elastomer, which is of a porous structure, and comprises a flexible body and a rigid body, which are interpenetrating, wherein the raw material of the flexible body comprises carbon nanotubes, and the rigid body comprises hard carbon. In the present application, a silicon-carbon composite material is prepared by using carbon nanotubes and hard carbon as carbon sources and compounding same with silicon; and compared with a conventional silicon-carbon composite material, the carbon nanotubes, serving as a bridge between the silicon and the hard carbon, can effectively improve the conductivity and the ion conducting energy, thereby improving the rate capability of a negative electrode material.
Resumen de: WO2025167316A1
A battery cell (20), a battery (100), and an electrical apparatus. The battery cell (20) comprises: a housing (23), the housing (23) comprising a first wall (21); an electrode assembly (22), provided with a tab; an electrode terminal (25), disposed on the first wall (21), the electrode terminal (25) being used to connect to a busbar (30) of the battery (100); and an adapter (24), the adapter (24) being used to connect the tab and the electrode terminal (25). The electrode terminal (25) is formed having a first weld pool area (40) and a second weld pool area (41), the first weld pool area (40) being used to connect to the busbar (30), the second weld pool area (41) being connected to the adapter (24). The first weld pool area (40) and the second weld pool area (41) are staggered along a direction perpendicular to the thickness direction of the first wall (21).
Resumen de: WO2025167256A1
A positive electrode active material and a preparation method therefor, a positive electrode sheet, a battery cell, a battery, and an electrical apparatus, relating to the technical field of batteries. The positive electrode active material comprises: a positive electrode matrix material having a secondary particle morphology, the secondary particles being formed by agglomeration of a plurality of primary particles; and a coating layer, the coating layer being coated on at least a portion of the surface of at least a portion of the primary particles of the positive electrode matrix material, and the coating layer comprising LiaMbOC, where a>0, b>0, and c>0. The ionic radius R of the M element satisfies: 50 pm≤R≤120 pm. The positive electrode active material can improve the cycle performance of a battery cell.
Resumen de: WO2025167053A1
A system (1100) and method for detaching a battery cell from a tray. The method for detaching a battery cell from a tray is applied to electrolyte injection upper computers (1101) and (122), the detaching method comprising: in response to a battery cell into which an electrolyte has been injected reaching a tray detaching station, acquiring a tray code of a tray, the tray being used for bearing the battery cell; on the basis of the tray code, determining in a tray data table acquired at a code reading station position index information of the battery cell in the tray, the code reading station being a station preceding the tray detaching station; and, on the basis of the position index information and the tray code, controlling a tray detaching mechanism (1103) deployed at the tray detaching station to separate the tray from the battery cell, such that the battery cell enters the next station in an electrolyte injection process.
Resumen de: WO2025167099A1
A negative electrode material and a battery. The negative electrode material comprises a carbon matrix and a silicon material. When the negative electrode material is tested by means of Raman spectroscopy, the negative electrode material has a first characteristic peak at 520±10 cm-1, the peak intensity of the first characteristic peak being IA, the negative electrode material has a second characteristic peak at 960±10 cm-1, the peak intensity of the second characteristic peak being IB, and the negative electrode material has a third characteristic peak at 480±10 cm-1, the peak intensity of the third characteristic peak being IC, wherein IA, IB and IC have the following relationship: 0.3≤IA/(IB+IC)≤0.6. The negative electrode material has high initial coulombic efficiency, high reversible capacity and high expansion resistance.
Resumen de: WO2025167087A1
Provided is a positive electrode sheet, comprising a positive electrode current collector and a positive electrode film layer, wherein the positive electrode film layer is arranged on at least one surface of the positive electrode current collector, the positive electrode film layer comprises a first positive electrode film layer and a second positive electrode film layer, and the first positive electrode film layer is located between the positive electrode current collector and the second positive electrode film layer. The first positive electrode film layer comprises a first positive electrode active material, the specific surface area of the first positive electrode active material is 12 m2/g to 16 m2/g, and on the basis of the total weight of the first positive electrode active material, the carbon content of the first positive electrode active material is 1.0 wt% to 1.5 wt%; and the second positive electrode film layer comprises a second positive electrode active material, the specific surface area of the second positive electrode active material is 6 m2/g to 19 m2/g, and on the basis of the total weight of the second positive electrode active material, the carbon content of the second positive electrode active material is 1.1 wt% to 2.1 wt%.
Resumen de: WO2025167278A1
A negative electrode sheet. The negative electrode sheet comprises a current collector and a negative electrode active material layer, which is arranged on the surface of the current collector, wherein the negative electrode active material layer comprises artificial graphite. The negative electrode sheet satisfies: 0.2≤S×E/(D×P)≤1.2, wherein S is the structural strength of the artificial graphite, and the structural strength refers to the ratio of the volume-average particle size Dv50 of the artificial graphite after powder pressing under a pressure of 20 KN to the volume-average particle size Dv50 thereof before powder pressing; E is the resistivity of the negative electrode sheet; D is the surface defect degree of the negative electrode sheet, and the surface defect degree refers to the peak area ratio of the D peak to the G peak of the artificial graphite; and P is the porosity of the negative electrode sheet.
Resumen de: WO2025167263A1
A negative electrode current collector and a preparation method therefor, a sodium secondary battery, and an electrical device. The negative electrode current collector comprises: a substrate; and a functional layer, arranged on at least one side of the substrate. The functional layer comprises a multifunctional additive. The multifunctional additive comprises NaxMNy•zH2O, where M comprises an atom capable of forming an alloy with Na, N comprises at least one of an O atom, an S atom, and/or an Se atom, and 0
Resumen de: WO2025167257A1
The present application discloses a thermal management system, a battery pack, and a thermal management method. The thermal management system comprises: a first circuit in communication with a second circuit, wherein the first circuit is a cooling-medium circulation circuit inside a battery pack, the second circuit is a cooling-medium circulation circuit outside the battery pack, and the first circuit and the second circuit form a total circuit; and a switching device, arranged in the total circuit, and used to block the second circuit and connect the first circuit when the battery pack is abnormal. In this way, when the battery pack has thermal runaway, the temperature inside the battery pack can be reduced to avoid thermal propagation, thereby improving the safety of the battery pack.
Resumen de: WO2025167243A1
The present application discloses a top cover support frame, a top cover assembly, and a battery. The top cover support frame is applied to a battery provided with a liquid injection hole. The top cover support frame comprises a support plate and a first protrusion. The support plate has a first surface and a second surface opposite to each other, and the first protrusion projects from the first surface. The top cover support frame is provided with a buffer recess and a liquid passage hole at least penetrating a side wall of the buffer recess. The buffer recess is partially arranged on the first protrusion and an opening thereof passes through the second surface. A bottom wall of the buffer recess is disposed opposite to the liquid injection hole.
Resumen de: WO2025167090A1
A negative electrode sheet and a preparation method therefor, a battery cell and an electric device. The negative electrode sheet comprises: a negative electrode current collector and a negative electrode active material film layer arranged on at least one side of the negative electrode current collector. The negative electrode active material film layer comprises: an electrically conductive agent comprising carbon and an organic polymeric dispersant having a hydrophilic group and a hydrophobic group, and the organic polymeric dispersant has a weight-average molecular weight of 100 to 5,000. The negative electrode sheet and the preparation method therefor can make substances in the negative electrode active material film layer be uniformly dispersed, thereby prolonging the storage life of the battery and improving the cycle capacity retention rate thereof. Further provided are a battery cell and an electric device comprising the negative electrode sheet, such that improved cycle performance and storage life of the battery cell can be obtained.
Resumen de: WO2025166959A1
Disclosed in the present application are a battery casing-cover welding inspection system and method. The battery casing-cover welding inspection system comprises a first inspection apparatus and an upper computer, the first inspection apparatus comprising a first conveyor line, first rolling assemblies, a first inspection assembly and second inspection assemblies, wherein the first conveyor line is used for conveying a battery cell; the first rolling assemblies are located on two sides of the first conveyor line and are used for rolling a first side edge of a welding seam between a casing and an end cover of the battery cell; the first inspection assembly is located upstream of the first rolling assemblies in the conveying direction of the first conveyor line and is used for capturing a welding seam image before the first side edge is rolled; the second inspection assemblies are located downstream of the first rolling assemblies in the conveying direction of the first conveyor line and are used for capturing a welding seam image after the first side edge is rolled; and the upper computer is used for determining a welding defect of the first side edge on the basis of the welding seam image captured before the first side edge is rolled and the welding seam image captured after the first side edge is rolled.
Resumen de: WO2025166982A1
A battery case and a battery pack using same. The battery case comprises a bottom plate (1), side plates (2), a lower support plate (3), a partition plate (4), and an upper support plate (5). The top surface of the bottom plate (1) is provided with first bosses (11). The side plates (2) are perpendicular to the bottom plate (1) and are arranged at two opposite edges of the bottom plate (1), a first snap (21) and a second snap (22) are arranged on the inner side of each side plate (2) in an extension direction of the side plate (2), and the first snap (21) is closer to the bottom plate (1) than the second snap (22). Two opposite ends of the lower support plate (3) are respectively arranged on the first snaps (21), the bottom surface of the lower support plate (3) abuts against the first bosses (11), and the top surface of the lower support plate (3) is used for placing batteries. Two opposite ends of the partition plate (4) are respectively fixedly arranged on the second snaps (22), and the top surface of the partition plate (4) is provided with second bosses (41). Two opposite ends of the upper support plate (5) are respectively arranged on the second snaps (22), the bottom surface of the upper support plate (5) abuts against the second bosses (41), and the top surface of the upper support plate (5) is used for placing batteries.
Resumen de: WO2025167270A1
The present application discloses a housing of a temperature sensor, a temperature sensor, a battery, and an electric apparatus. The housing of a temperature sensor comprises: a body portion, wherein an accommodating space is formed inside the body portion, an opening is formed in one end of the body portion, and the opening is communicated with the accommodating space; and a connecting portion located outside the body portion and connected to the body portion, wherein the connecting portion and the body portion jointly define a slot structure, a connecting structure is formed on the inner surface of the wall of the slot, and the connecting structure is used for limiting the movement of the body portion in the insertion direction of the slot structure. The slot structure of the housing is connected to a tab by means of insertion, and a part of the tab is located in the slot. Compared with the structure in which the housing is mounted on one side of the tab, the mounting space on two sides of the tab can be fully utilized to mount the housing, so as to save the mounting space.
Resumen de: WO2025167293A1
The present application relates to the technical field of batteries, and provides a battery assembly and a device. By controlling the size parameters of a heat absorption piece arranged on the surface of one side of a casing of a cell in the battery assembly, the mass of a heat absorption main material, the size parameters of the casing, related parameters during thermal runaway, etc. to satisfy a certain relationship, it can be guaranteed that the heat absorption piece can fully inhibit heat of a battery in thermal runaway from diffusing to an adjacent battery, and the space utilization rate of the battery assembly containing the plurality of cells is not excessively affected.
Nº publicación: WO2025167413A1 14/08/2025
Solicitante:
CONTEMPORARY AMPEREX TECH CO LIMITED [CN]
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Resumen de: WO2025167413A1
Disclosed are a battery and an electric device. The battery comprises a case; battery cell rows, each comprising a plurality of battery cells arranged in a first direction, wherein the plurality of battery cell rows are stacked in a second direction to form a battery cell array and are placed in the case; and a thermal management part disposed on the sides of the plurality of battery cells in a third direction for heat exchange with the battery cells, wherein the first direction, the second direction, and the third direction are perpendicular to each other.