Alerta

QUASI-SOLID POLYMER ELECTROLYTE, PREPARATION METHOD THEREFOR AND USE THEREOF

Resumen de: WO2026011569A1

A quasi-solid polymer electrolyte, a preparation method therefor, and the use thereof. The quasi-solid polymer electrolyte comprises an electrolyte salt, an organic carbonate ester solvent, and a solid polymer electrolyte matrix, wherein the solid polymer electrolyte matrix is formed into a cross-linked network structure by polymerizing a polymer monomer and a cross-linking agent under the action of an initiator, the organic carbonate ester solvent comprises a main solvent and a fluorine-containing organic solvent, and the organic carbonate ester solvent is encapsulated in situ in the cross-linked network structure of the solid polymer electrolyte matrix.

BATTERY PACK AND ELECTRICAL DEVICE

Resumen de: WO2026012078A1

Provided in the embodiments of the present application are a battery pack and an electrical device. The battery pack comprises a housing, a flexible cold plate and a plurality of battery cells; the housing is provided with a cavity; the flexible cold plate is arranged in the cavity; the housing fits with the battery cells, and the flexible cold plate abuts against the inner wall of the cavity; the flexible cold plate is provided with a liquid cooling channel for conveying a cooling medium. When a battery cell undergoes thermal expansion, a cooling medium is introduced into the liquid cooling channel of the flexible cold plate to allow same to expand. The present application can improve the cooling and heat dissipation effect on the battery cells, and the housing provides protection for the flexible cold plate, thereby preventing the flexible cold plate from being prone to deformation caused by compression due to direct contact with the battery cells.

BATTERY, ENERGY STORAGE APPARATUS, AND ENERGY STORAGE SYSTEM

Resumen de: WO2026012054A1

Provided are a battery, an energy storage apparatus, and an energy storage system. The battery comprises: an electrode assembly, the electrode assembly comprising a positive electrode sheet, a separator, and a negative electrode sheet; an electrolyte, the electrolyte comprising an electrolyte salt and an organic solvent, the organic solvent comprising a cyclic carbonate and a chain carbonate, and a mass ratio of the cyclic carbonate to the chain carbonate being A; and a casing assembly, the casing assembly comprising a first end cover assembly, a casing body, and a second end cover assembly, the first end cover assembly comprising a first top cover and a first explosion-proof valve connected to each other, and the first top cover being electrically connected to the positive electrode sheet; the second end cover assembly comprises a second top cover, a negative terminal, and a second explosion-proof valve, the negative terminal being electrically connected to the negative electrode sheet; an area ratio of the first explosion-proof valve to the second explosion-proof valve is B; and the battery satisfies the relational expression: 2.23≤B/A≤17.65.

NEGATIVE ELECTRODE MATERIAL AND LITHIUM-ION BATTERY

Resumen de: WO2026012510A1

The present invention belongs to the technical field of battery negative electrode materials. Disclosed are a negative electrode material and a lithium-ion battery. The negative electrode material comprises a matrix and an active substance, wherein the matrix has pores, and the active substance is at least partially distributed in the pores of the matrix. In addition, the negative electrode material satisfies the following inequation, wherein A is the pore volume of the negative electrode material, with the unit thereof being cm3/g; and B is the average pore size of the negative electrode material, with the unit thereof being nm. By means of the negative electrode material provided in the embodiments of the present invention, an excellent first-day gas production quantity can be achieved, and the particle strength of the negative electrode material can be improved, thereby reducing the erosion of water molecules on an active substance, such as silicon particles, in the negative electrode material, reducing the first-day gas production quantity of the negative electrode material, and improving the cycling stability of the negative electrode material.

BATTERY CELL, BATTERY, ENERGY STORAGE DEVICE, AND ELECTRIC DEVICE

Resumen de: WO2026011805A1

Disclosed in the present application are a battery cell, a battery, an energy storage device, and an electric device. The battery cell comprises a housing, a first conductive member, a first terminal, a first deformable member, and a first blocking member. The housing has a first wall. The first conductive member is at least partially disposed on the outer side of the first wall and insulated from the first wall, and the first conductive member comprises a first conductive portion and a second conductive portion, which are arranged in a first direction. The first terminal is connected to the first conductive portion. The first deformable member is electrically connected to the first wall, and the first deformable member is configured to be deformable to come into contact with the second conductive portion, so as to electrically connect the first terminal to the first wall. The first blocking member is connected to the first wall, and at least part of the first blocking member is located on the side of the second conductive portion away from the first deformable member. The technical solutions provided in the present application can improve the reliability of a battery.

ELECTROLYTE, BATTERY, AND ELECTRIC DEVICE

Resumen de: WO2026011767A1

Provided are an electrolyte, a battery, and an electric device. The electrolyte comprises an ether solvent and a lithium salt. The ether solvent comprises at least one of 1,2-di((1'-ethoxy)ethoxy)propane, 2,2-diethoxypropane, 2,2-dimethoxypropane, 1,2-dimethoxypropane, 1,3-dimethoxypropane, and 1,2-diethoxyethane. By using an ether solvent having more sterically hindered functional groups, the solvation ability of ether molecules is adjusted by means of the steric hindrance effect, thereby significantly improving the stability of positive and negative electrodes and coulombic efficiency in an ether electrolyte.

CONTROL METHOD AND SYSTEM FOR IMPROVING COATING THICKNESS UNIFORMITY

Resumen de: WO2026011557A1

The present invention relates to the field of automatic slurry thickness control. Disclosed are a coating thickness control method and system. The method comprises: setting a slurry dripping height H of a coating slurry, a coating speed Uinput, and a lip slurry injection volume V; acquiring a static initial radius re, a surface tension YL, a density p, and a viscosity η of the coating slurry; calculating a radius r(t) of a droplet deposited on a substrate under different slurry dripping heights; and determining whether r(t) increases as the slurry dripping height H increases, and if not, adjusting the slurry dripping height H, the coating speed Uinput, and the lip slurry injection volume V, such that r(t) increases as the slurry dripping height H increases. In the present invention, by analyzing different positive and negative electrode slurry compositions and different temperatures, rheological curves of different positive and negative electrode slurry viscosities under different external factors are constructed, thereby improving coating uniformity, accommodating a broader range of slurry compositions and proportions, and improving product quality while reducing costs.

BATTERY AND ELECTRIC DEVICE

Resumen de: WO2026011555A1

A battery cell (30), a battery (100), and an electric device. The battery (100) comprises battery cells (30), a case (20), a locking mechanism (10), and a sealing member (40). The case (20) is configured to accommodate the battery cells (30), and the case (20) is provided with a mounting cavity (203) and a lead-out hole (204) which are in communication with each other. The locking mechanism (10) comprises a sleeve (1) and a locking member (2), the sleeve (1) is fixed in the mounting cavity (203), the sleeve (1) is sleeved on the locking member (2), the locking member (2) partially extends from the sleeve (1) and passes through the lead-out hole (204), and the locking member (2) is configured to be engaged with or disengaged from a lock base (300). The sealing member (40) is at least partially located between the hole wall surface of the lead-out hole (204) and the outer surface of the locking member (2). As the sealing member (40) is at least partially located between the hole wall surface of the lead-out hole (204) and the outer surface of the locking member (2), the sealing member (40) can block impurities from entering the mounting cavity (203) and the sleeve (1), thereby reducing the impact of the impurities on the engagement or disengagement between the locking member (2) and the lock base (300), reducing the risk of failure of the locking mechanism (10), and facilitating the disassembly and assembly between the battery (100) and the electric device.

BATTERY PACK AND VEHICLE

Resumen de: WO2026011556A1

A battery pack and a vehicle, which solve the technical problem in the prior art of poor heat dissipation effect of batteries. The battery pack comprises: a case, comprising a bottom plate (200) and a frame (100) which are connected to each other, the bottom plate (200) being provided with cooling channels (210), and liquid inlets (211) and liquid outlets (212) in communication with the cooling channels (210), wherein two side longitudinal beams (110) of the frame (100) are each provided with cavities (114) and a main port communicated with the cavities (114), the cavities (114) of one of the side longitudinal beams (110) are communicated with the liquid inlets (211) of the cooling channels (210), and the cavities (114) of the other side longitudinal beam (110) are communicated with the liquid outlets (212) of the cooling channels (210); and modules (300) covering openings of the cooling channels (210), so as to be in contact with a coolant in the cooling channels (210) for heat exchange. The coolant in the battery pack directly flushes the modules (300) for heat exchange, improving the cooling effect, and achieving good temperature uniformity of battery cells in the modules (300).

BATTERY AND ELECTRIC DEVICE

Resumen de: WO2026011549A1

A battery (100) and an electric device. The battery (100) comprises a battery cell group (1) and a plurality of busbars (30). The battery cell group (1) comprises a plurality of battery cells (10) stacked in a first direction (X). The plurality of busbars (30) are electrically connected to the plurality of battery cells (10); the plurality of busbars (30) include a first busbar (30a) and a second busbar (30b); the first busbar (30a) comprises a first busbar layer (31) and a second busbar layer (32) that are stacked and connected to each other, the first busbar layer (31) connecting at least two battery cells (10) arranged in the first direction (X); and the second busbar (30b) connects at least two battery cells (10) arranged in the first direction (X); the thickness of the second busbar (30b) is greater than the thickness of the first busbar layer (31), and the thickness of the second busbar (30b) is greater than the thickness of the second busbar layer (32). The first busbar layer (31) comprises a first main body portion (311), a first connecting portion (312), and a second main body portion (313). The battery (100) provided in the present application, which comprises the laminated first busbar (30a) and the single-layer second busbar (30b), can meet a relatively high overall current-carrying capacity of the busbars (30) while also achieving relatively high resistance to expansion and vibration impact forces.

WELDING POSITIONING TOOL AND BATTERY PRODUCTION LINE

Resumen de: WO2026011540A1

Provided are a welding positioning tool and a battery production line. The welding positioning tool comprises: at least one welding carrier (10), comprising a pressing recess (11), a positioning recess (12) and a hollow area (13), the hollow area (13) being positioned between the positioning recess (12) and the pressing recess (11), the positioning recess (12) being used for placing a main body portion of an electrode assembly (124), the pressing recess (11) being used for placing one part of a connection piece (127), and the hollow area (13) being used for placing the other part of the connection piece and a tab of the electrode assembly (124); and a frame (20), comprising a working panel (23) and two trays (21), the two trays (21) being distributed on two sides of the working panel (23), and the two trays (21) and the working panel (23) being all used for placing the welding carrier (10), wherein in the vertical direction, the vertical distance from the trays (21) to the working panel (23) is adjustable. The welding positioning tool and the battery production line have the advantage of being applicable to limited spaces.

CYLINDRICAL BATTERY CELL, BATTERY AND ELECTRIC DEVICE

Resumen de: WO2026011529A1

A cylindrical battery cell (20), a battery (100) and an electric device. The cylindrical battery cell (20) comprises: an electrode assembly (21) of a wound structure, wherein the electrode assembly (21) comprises a first tab (212a); a housing (22), which defines an accommodating space inside for accommodating the electrode assembly (21); and a current collector component (23), which comprises a first connection portion (231) and a second connection portion (232) that are connected to each other, wherein the second connection portion (232) is connected to the outer edge of the first connection portion (231) and protrudes in the direction away from the electrode assembly (21), the first connection portion (231) is electrically connected to the first tab (212a), and the second connection portion (232) is directly connected to the housing (22); the first connection portion (231) has at least one first notch (231a) recessed from the outer edge toward the center of the first connection portion (231), the first notch (231a) being used for communicating spaces on both sides of the first connection portion (231) in the direction of thickness. By means of the provision of the first notch (231a) on the current collector component (23), the gas venting efficiency of the cylindrical battery cell (20) is improved.

BATTERY RACK

Resumen de: WO2026011503A1

A battery rack, comprising a rack and a wire fastening member (3), wherein the rack is configured to support battery packs, and the wire fastening member (3) is detachably connected to the rack; the wire fastening member comprises a base (31) and at least two wire fastening rods (32); the base (31) is connected to the rack; all the wire fastening rods (32) are arranged on the base at intervals in a first direction; the wire fastening rods (32) extend in a second direction; the wire fastening rods (32) are configured for connection of connection wires of the battery packs thereto; the first direction is at an angle to the second direction.

ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE

Resumen de: WO2026012016A1

An electrochemical device and an electronic device. The electrochemical device comprises a positive electrode sheet and a negative electrode sheet, wherein the positive electrode sheet comprises a first active material, and a delithiation product of the first active material comprises at least one of Li5-xFeO4-y, Li5-xCoO4-y, Li2-zMnO2, Li1.2-rNi0.13Fe0.13Mn0.54O2 or Li1-tFePO4; and the negative electrode sheet comprises a negative electrode material layer, the negative electrode material layer comprises silicon, and based on the mass of the negative electrode material layer, the mass percentage content of silicon is 1%-50%. The mass of the delithiation product of the first active material in the positive electrode sheet is A mg/1540 mm2, the mass of silicon in the negative electrode sheet is B mg/1540 mm2, and 29%≤A/B≤230%. The electrochemical device has the above features, and thus can have high energy density and good safety performance and cycle performance.

BATTERY CELL, BATTERY, AND ELECTRIC DEVICE

Resumen de: WO2026012019A1

The present application relates to the field of batteries, and provides a battery cell, a battery, and an electric device. The battery cell comprises a casing, an end cover, and a pressure relief mechanism. The casing is provided with an opening, and the end cover closes the opening and is welded and connected to the casing to form a first weld portion. The pressure relief mechanism is arranged on the end cover, the pressure relief mechanism comprises a weakened portion, and the weakened portion is configured to at least partially rupture when the battery cell undergoes pressure relief. In a direction perpendicular to the thickness direction of the end cover, the minimum distance between the weakened portion and the first weld portion is A, and the following condition is satisfied: A≥2.5 mm. By configuring the minimum distance between the weakened portion and the first weld portion in the direction perpendicular to the thickness direction of the end cover to be greater than or equal to 2.5 mm, the impact of high heat generated when welding the casing and the end cover on the weakened portion can be reduced, thereby reducing the risk of premature rupture of the weakened portion, and prolonging the service life of the battery cell.

NEGATIVE ELECTRODE MATERIAL, NEGATIVE ELECTRODE SHEET, AND BATTERY

Resumen de: WO2026012010A1

The present application provides a negative electrode material, a negative electrode sheet, and a battery. The negative electrode material comprises an active substance, and the active substance comprises silicon, a silicon oxide, and a compound of a metal element M, wherein the compound of a metal element M comprises a silicate of the metal element M and/or an oxide of the metal element M. The negative electrode material is determined by means of electron paramagnetic resonance; and the measured g-factor value of the electron spin resonance signal of an oxygen atom is X, where 2.00601≤X≤2.00699, and the oxygen vacancy intensity is Y, where 10G≤Y≤400G. The negative electrode material provided in the present application has a suitable oxygen vacancy; there is a stable lithium-ion channel during the cycle process of a battery; and the negative electrode material can relieve the expansion effect of the negative electrode material, thereby improving the cycle stability.

BATTERY CELL, BATTERY APPARATUS, AND ELECTRIC DEVICE

Resumen de: WO2026011520A1

A battery cell (20), a battery apparatus (100), and an electric device. The battery cell (20) comprises a casing (2) and an electrode assembly (24). The casing (2) comprises a side wall (211) and a first wall (23), the side wall (211) being disposed around the first wall (23). The first wall (23) comprises a body portion (231) and a connection portion (232) connected to each other, wherein the body portion (231) is connected to the side wall (211), and the body portion (231) and the connection portion (232) are made of different materials. The electrode assembly (24) is accommodated in the casing (2), and the electrode assembly (24) is provided with a first tab (242). The connection portion (232) and the first tab (242) are made of the same material, and the connection portion (232) is connected to the first tab (242) by means of welding. The first wall (23) is configured to comprise the body portion (231) and the connection portion (232) connected to each other, and the connection portion (232) is connected to the first tab (242) by means of welding, such that the input or output of electric energy to/from the battery cell (20) can be realized by means of the first wall (23), the number of electrode terminals and the number of current collecting members can be reduced, the space occupied inside the battery cell (20) can be reduced, and energy density can be improved. The connection portion (232) and the first tab (242) are welded using the same material, such that the occurr

TEST APPARATUS AND CHARGING SYSTEM

Resumen de: WO2026011515A1

The present disclosure relates to the technical field of charging and discharging tests, and in particular to a test apparatus and a charging system. The test apparatus is used for performing charging and discharging tests on a first storage and charging device and a second storage and charging device, wherein the first storage and charging device is provided with a first charging interface, and the second storage and charging device is provided with a second charging interface. The test apparatus comprises: a connection unit, adapted to be connected to power interfaces in the first charging interface and the second charging interface, so that the first storage and charging device and the second storage and charging device are electrically connected; and a test control unit, adapted to be connected to signal interfaces in the first charging interface and the second charging interface, to communicate with the first storage and charging device and the second storage and charging device separately, so as to control the first storage and charging device and the second storage and charging device to undergo charging and discharging tests. In this way, two storage and charging devices are electrically connected by means of the test apparatus, and the test apparatus communicates with the two storage and charging devices to control the two storage and charging devices to perform charging and discharging, so that bidirectional charging and discharging tests for the two storage and cha

NEGATIVE ELECTRODE MATERIAL AND SECONDARY BATTERY

Resumen de: WO2026012009A1

A negative electrode material and a secondary battery. The negative electrode material comprises a silicon-carbon material, the silicon-carbon material comprises a silicon-based material and a carbon-based material, and at least part of the carbon-based material is distributed in the silicon-based material. The negative electrode material is tested by means of a Raman spectrum, and the negative electrode material has a first characteristic peak at 515±10 cm-1, a second characteristic peak at 305±10 cm-1, and a third characteristic peak at 925±10 cm-1. The peak intensity of the first, second and third characteristic peaks is respectively M1, M2 and M3. Q is defined as the oxygen protection degree of the silicon-based material, and Q=M1/M2+M1/M3, where 1.5≤Q≤4.5, and M2>M3. The Q value of the silicon-based material of the negative electrode material is controlled to be between 1.5-4.5, such that side reactions between the negative electrode material and an electrolyte can be reduced, and an appropriate amount of oxides can also be formed on the surface of the silicon-based material, thereby relieving the volume expansion of the silicon-based material.

LITHIUM NICKEL MANGANATE POSITIVE ELECTRODE MATERIAL, PREPARATION METHOD, AND LITHIUM-ION BATTERY

Resumen de: WO2026012371A1

Provided in the present application are a lithium nickel manganate positive electrode material, a preparation method, and a lithium-ion battery. In the lithium nickel manganate positive electrode material provided by the present application, the positive electrode material comprises, from interior to exterior, an internal ordered phase and a surface disordered phase, wherein the internal ordered phase comprises a doping element, and is of an ordered spinel structure; the surface disordered phase comprises a doping element, and is of a disordered spinel structure; and the mass proportion of the surface disordered phase in the positive electrode material is 0%<m<1%. In the lithium nickel manganate positive electrode material provided by the present application, the internal ordered phase provides a high working voltage and a high energy density, the surface disordered phase improves the cycling stability of the positive electrode material and provides a higher capacity and a faster lithium-ion diffusion rate, and the doping element lowers the content of unstable lattice oxygen and reduces lattice distortion; and such a material design strategy provides a new possibility for the development of high-performance lithium-ion batteries.

SECONDARY BATTERY, POSITIVE ELECTRODE ACTIVE MATERIAL, AND ELECTRIC DEVICE

Resumen de: WO2026011960A1

A secondary battery, a positive electrode active material, and an electric device. The secondary battery comprises a positive electrode sheet, the positive electrode sheet comprises a positive electrode active material, and the positive electrode active material comprises secondary particles. The secondary particles are agglomerated particles comprising a plurality of primary particles, wherein the primary particles comprise a positive electrode active substance. The secondary particles comprise oriented secondary particles. In the oriented secondary particles, on the basis of the total number of primary particles in the oriented secondary particles, the ratio of the number of primary particles, the a-axis and the longitudinal direction of which form an included angle α1, is denoted as F1, where 15°≤α1≤45°, and F1≥60%.

BATTERY CELL, BATTERY AND ELECTRICAL DEVICE

Resumen de: WO2026011425A1

Provided are a battery cell (10), a battery (100) and an electrical device. The battery cell (10) comprises a casing (11), a first end cap assembly (13), an electrode assembly (14) and a separator (12); the first end cap assembly (13) comprises fitting protrusions (131) and a first electrode lead-out member (17); the electrode assembly (14) is accommodated in the casing (11); the electrode assembly (14) comprises a main body part (141) and a tab (142); the separator (12) is arranged between the first electrode lead-out member (17) and the main body part (141); the tab (142) passes through the separator (12) and is electrically connected to the first electrode lead-out member (17); the separator (12) comprises limiting protrusions (123); each limiting protrusion (123) is provided with a limiting hole (121); the wall of each limiting hole (121) is provided with an elastic deformation structure; the fitting protrusions (131) fit the elastic deformation structures; each elastic deformation structure comprises a pass-through hole (1231); the elastic deformation structures are configured to elastically deform when the fitting protrusions (131) are inserted into the limiting holes (121) and pass through the pass-through holes (1231). Providing the elastic deformation structures on the separator (12) can satisfy assembly requirements without the need to provide deformation structures on the fitting protrusions (131), thereby reducing the occurrence of fractures of the fitting protrus

SYSTEM FOR MAINTAINING THE TEMPERATURE OF A VEHICLE COMPONENT, METHOD FOR MANUFACTURING SAME AND HEAT EXCHANGE MODULE FOR MAINTAINING THE TEMPERATURE OF A COMPONENT

Resumen de: WO2026011232A1

The present invention describes a system for maintaining the temperature of a vehicle component, a method for manufacturing same and a heat exchange module for maintaining the temperature of a component. The present invention specifically comprises a system for maintaining the temperature of a vehicle component, provided with a thermal base that has a modular configuration, which makes it possible to adapt its geometry so that it is compatible for application in different vehicle components that require temperature maintenance. The present system further comprises internal fluid channels arranged in an optimised configuration that provides greater heat exchange efficiency between the thermal base and the vehicle component. The present invention pertains to the fields of electrical engineering and mechanical engineering, aimed at the area of heat exchange systems for automotive batteries and electric power systems.

INTELLIGENT MONITORING SYSTEM FOR IN-SITU ION DYNAMICS MONITORING ON RECHARGEABLE BATTERIES

Resumen de: WO2026015106A1

The invention relates to an intelligent battery performance monitoring system that continuously monitors ion mobility and dynamics detected during battery operation to improve the performance and efficiency of rechargeable batteries.

APPARATUS FOR WELDING CURRENT COLLECTORS AND METHOD OF WELDING CURRENT COLLECTORS

Nº publicación: WO2026014879A1 15/01/2026

Solicitante:

LG ENERGY SOLUTION LTD [KR]
\uC8FC\uC2DD\uD68C\uC0AC \uC5D8\uC9C0\uC5D0\uB108\uC9C0\uC194\uB8E8\uC158

Resumen de: WO2026014879A1

An apparatus for welding current collectors and a method of welding current collectors are disclosed. The apparatus for welding current collectors comprises: an offset detector for detecting a center offset, which is the deviation between a set reference position and the electrode center position of a cylindrical electrode assembly extending in the axial direction; a current collector coupler, which temporarily couples a current collector to the electrode assembly at a coupling position at which a current collection center position and the electrode center position are aligned, by moving, in parallel, by the center offset, the current collector disposed such that the current collection center position is aligned at an initial position spaced a coupling gap from a reference position in the transfer direction of the electrode assembly; and a current collector welder, which welds the temporarily coupled current collector to the electrode assembly so as to permanently couple same. Eccentricity defects of a welded electrode body can be prevented.