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CELL WINDING APPARATUS AND METHOD

Resumen de: US20260331553A1

The cell winding apparatus comprises an unwinding mechanism, a winding needle assembly, and an electrode sheet cutting-off device. The unwinding mechanism is configured to be capable of unwinding a first electrode sheet, a second electrode sheet, and a separator. The winding needle assembly is configured to be capable of overlapping the first electrode sheet, the second electrode sheet and the separator which are unwound by the unwinding mechanism and winding same into a wound structure. The electrode sheet cutting-off device comprises a cutter and an adjusting mechanism; the adjusting mechanism and the cutter edge side of the cutter are provided with a path for the first electrode sheet to pass through; the adjusting mechanism is configured to enable a demarcated region to be cut off of the first electrode sheet to be opposite to the cutter edge of the cutter.

All-Solid-State Lithium-Ion Secondary Battery and Method for Producing Same

Resumen de: US20260331599A1

0000 The present invention addresses the problem of providing an all-solid-state lithium-ion secondary battery that has excellent charging/discharging characteristics. 0000 The present invention includes at least a negative electrode layer, a separator layer, and a positive electrode layer. The negative electrode layer contains a negative electrode active substance which includes graphite. The separator layer is made of an oxide solid electrolyte. A resistance reduction layer is formed between the negative electrode layer and the separator layer, and the resistance reduction layer is made of a lithium alloy. Alternatively, the present invention includes a substance with which a lithium alloy is formed as a result of a secondary battery operation in which current flows between the negative electrode layer and the positive electrode layer.

3D STRUCTURED ELECTRODES FOR ELECTROCHEMICAL CELLS

Resumen de: US20260331462A1

0000 Described herein are, among other things, structured cathodes for use in electrochemical cells (e.g., batteries). In some embodiments, a structured cathode includes at least one electrochemically active material included in a patterned film. The film may be disposed on a substrate (e.g., current collector) or may be free standing. The film has at least one patterned surface, for example has recesses extending into the film. A patterned film may be porous. A patterned film may be made of an assembly of particles including an electrochemically active material. Recesses may include holes or trenches or a combination thereof. Recesses may be formed by removing material from an initial film, such as with laser ablation. Recesses may extend only partially into or entirely through a film. Recesses may be interconnected or separate. Recesses may be disposed regularly or irregularly across a patterned surface. Recesses may be at least partially filled with electrolyte.

DEVICE FOR THE ACOUSTIC TREATMENT OF A VENTILATION SYSTEM

Resumen de: US20260326535A1

An acoustic treatment device for a cooling system of a vehicle is disclosed herein. The acoustic treatment device is configured to be fitted to a cooling system of a vehicle and includes at least one wall which delimits a duct for the circulation of an air flow. The acoustic treatment device includes at least one array of resonators formed by one or more rows of resonators arranged around the duct perpendicular to an axis of elongation of the duct. Each resonator of a row of resonators includes at least one cavity arranged in the wall and a neck connecting the cavity to the duct. For a given dimension of the cavity or of the neck, at least one resonator of the row of resonators has a value that is different from the value of the corresponding dimension of the other resonators of the row.

METHOD FOR PRODUCING ALKALI SULFONYL IMIDE SALTS

Resumen de: US20260327074A1

The present invention relates to a method for producing a salt of bis(chlorosulfonyl)imide (HCSI salt), which is economically feasible at industrial scale and which provides a high-purity product. The present invention also provides a method for producing a lithium salt of bis(fluorosulfonyl)imide (LiFSI), wherein said HCSI salt is used as an intermediate compound.

HEAT EXCHANGE ASSEMBLY, BATTERY DEVICE, AND ELECTRIC APPARATUS

Resumen de: WO2026218712A1

Embodiments of the present disclosure provide a heat exchange assembly, a battery device, and an electric apparatus. The battery device comprises a case, a heat exchange assembly, and a plurality of battery cells. The plurality of battery cells are disposed in the case. The heat exchange assembly comprises at least two heat exchange members. At least one of the heat exchange members is configured as a flexible member, and at least one of the heat exchange members is configured as a rigid member. The flexible member and the rigid member are stacked to form at least one medium flow channel. The flexible member comprises a metal layer and an insulating layer which are stacked, the insulating layer at least covering the side of the metal layer facing away from the rigid member. The heat exchange assembly further comprises an insulating structure, the insulating structure covering the outer peripheral surface of the metal layer.

HEAT EXCHANGE ASSEMBLY, BATTERY APPARATUS AND ELECTRICAL APPARATUS

Resumen de: WO2026218702A1

Provided in the embodiments of the present disclosure are a heat exchange assembly, a battery apparatus and an electrical apparatus. The battery apparatus comprises a box assembly, the heat exchange assembly and a plurality of battery cells. The plurality of battery cells are arranged in the box assembly. The heat exchange assembly comprises at least two heat exchange members, at least one heat exchange member being provided as a flexible member, and at least one heat exchange member being provided as a rigid member; and the flexible member and the rigid member are stacked to form at least one medium flow channel, the at least one medium flow channel being used for guiding a heat exchange medium, and the heat exchange medium being used for exchanging heat with the plurality of battery cells. The flexible member comprises a metal plasticized film. A partial region of the rigid member is recessed to form at least one weight reducing recess. The flexible member has a relatively light mass, which helps to reduce the weight of the heat exchange assembly. Recessing a partial region of the rigid member to form the at least one weight reducing recess helps to further reduce the weight of the heat exchange assembly.

SOFT BALL MILLING COATED MODIFIED PARTICLES, PREPARATION METHOD THEREFOR AND USE THEREOF

Resumen de: WO2026218520A1

The present invention relates to the field of particle modification, and relates to soft ball milling coated modified particles, a preparation method therefor and a use thereof. The present invention provides coated modified particles and a preparation technology therefor. The preparation raw materials of the coating modified particles comprise polymer pellets, particles to be coated, and a functional additive; by using the polymer pellets as a soft ball milling friction medium, and by means of collision and friction adhesion with the particles to be coated and the functional additive, a pure polymer coating layer or a composite coating layer of a polymer and the functional additive is formed on the surface of the particles to be coated, wherein the surface hardness or elastic modulus of the polymer is less than the surface hardness or elastic modulus of the particles to be coated, and the maximum size of the geometric shape of the particles to be coated is less than the minimum size of the geometric shape of the polymer pellets. The present invention has significant advantages such as wide applicability, strong scalability, low processing costs, green and low‑carbon performance, and thus has good application prospects.

TEMPERATURE ACQUISITION DEVICE, BATTERY MANAGEMENT SYSTEM, AND BATTERY DEVICE

Resumen de: US20260331612A1

A temperature acquisition device, a battery management system, and a battery device are provided. The temperature acquisition device includes an acquisition module and a control module. The acquisition module is connected to a cell of a battery assembly and configured to acquire temperature information of the cell and a first electric signal of the cell. The control module is connected to the acquisition module and configured to determine whether the position of the acquisition module is a preset position according to the first electric signal of the cell.

SECONDARY BATTERY AND BATTERY MODULE

Resumen de: US20260331723A1

0000 Disclosed are a secondary battery and a battery module, and more particularly a terminal plateless secondary battery and a battery module having an integrated terminal plate and busbar. The secondary battery includes an electrode assembly, a current collection unit electrically coupled to the electrode assembly, a case configured to receive the electrode assembly and the current collection unit, and a terminal unit electrically coupled to the current collection unit, wherein the terminal unit includes an inner terminal portion extending through the case in an inward direction of the case and an outer terminal portion extending in an outward direction of the case, the length of the outer terminal portion being greater than the length of the inner terminal portion.

BATTERY CELL, BATTERY, ELECTRICAL APPARATUS, AND BATTERY CELL PRODUCTION METHOD

Resumen de: US20260331694A1

A battery cell includes a housing, an electrode assembly, a vent valve assembly, and a protective member. The housing is provided with an accommodating cavity; where the housing includes a first wall; the first wall has a first surface and a second surface opposite to each other, the second surface faces outside the battery cell; the first wall is provided with a first vent hole; and the first vent hole extends through the first surface and the second surface. The electrode assembly is accommodated in the accommodating cavity. The vent valve assembly is connected to the first wall and covers the first vent hole. The protective member is detachably connected to the second surface and covers the vent valve assembly.

MULTI-LAYER FULL-OPEN STEEL PLATE AND MANUFACTURING METHOD FOR MULTI-LAYER FULL-OPEN STEEL PLATE

Resumen de: WO2026218838A1

A multi-layer full-open steel plate and a manufacturing method for a multi-layer full-open steel plate. The multi-layer full-open steel plate comprises a plurality of stacked shaping layers (100) and a framework layer (200) arranged on the uppermost shaping layer (100). An ink storage channel (300) is formed by shaping patterns on the plurality of shaping layers (100), so that the amount of ink passing through the ink storage channel (300) is significantly increased compared with a single-layer structure used by a conventional full-open steel plate, thereby ensuring that during narrow linewidth printing, paste pushed by a squeegee can continuously infiltrate into mesh holes and is stably transferred to a cell, thus ensuring that the supply of the paste is sufficient during printing, so as to ensure full plasticity of fingers and reduce the finger interruption rate.

POSITIVE ELECTRODE SHEET AND PREPARATION THEREFOR, BATTERY CELL, BATTERY, AND ELECTRIC DEVICE

Resumen de: US20260331469A1

A positive electrode sheet comprises: a positive electrode current collector; a first positive electrode active material film layer disposed on at least one side of the positive electrode current collector, the first positive electrode active material film layer comprising solid first positive electrode active material particles; and a second positive electrode active material film layer disposed between the first positive electrode active material film layer and the positive electrode current collector, the second positive electrode active material film layer comprising second positive electrode active material particles having a hollow structure.

SECONDARY BATTERY AND ELECTRIC DEVICE

Resumen de: WO2026218952A1

The present invention belongs to the technical field of batteries. Disclosed are a secondary battery and an electric device. By controlling the number of big and small secondary particles of a positive electrode active material in a positive electrode sheet, the volume average particle size of a negative electrode active material and the specific discharge capacities of the positive electrode active material and the negative electrode active material to meet the following relations: 1≤H≤40 and H=(n1/n2)Dv50(C1/C2), the positive electrode sheet and the negative electrode sheet are better matched, such that interfacial side reactions can be effectively reduced, the gas production of the secondary battery can be reduced, the diffusion path of lithium ions can be improved, and the stability of the positive active material in the process of tabletting can be improved, thereby significantly improving the crushing resistance of the particles. Moreover, the specific discharge capacities of the positive electrode active material and the negative electrode active material exhibit good adaptability, such that the cycle performance and rate capability of the secondary battery are effectively improved.

SECONDARY BATTERY INCLUDING CURRENT COLLECTOR

Resumen de: US20260331717A1

The present disclosure relates to a secondary battery including a coupling structure of a current collector and a cap assembly and is directed to providing a secondary battery capable of improving a structure of the current collector to remove a separate member connecting a terminal and enable a simple connecting process, thereby saving material costs and improving productivity. To this end, the present disclosure provides a secondary battery including a case having an opening formed at a least one end thereof, an electrode assembly accommodated in the case, a current collector electrically connected to the electrode assembly, a terminal electrically connected to the current collector, and a cap assembly installed in the opening of the case, wherein the current collector includes a conductive boss formed to face the terminal of the cap assembly.

METHOD FOR EVALUATING COMPACTION DENSITY OF ELECTRODE SHEET OF LITHIUM-ION BATTERY

Resumen de: WO2026219110A1

A method for evaluating the compaction density of an electrode sheet of a lithium-ion battery, which relates to the technical field of lithium-ion batteries. The method comprises the steps of: performing a real-time compaction test on an electrode sheet, wherein the real-time compaction test comprises: under a constant-pressure condition, gradually decreasing the roll gap in preset length increments while recording, in real time, electrode sheet thickness data corresponding to respective roll gap values, and under a constant-roll-gap condition, gradually increasing the rolling pressure in preset pressure increments while recording, in real time, electrode sheet thickness data corresponding to respective rolling pressure values, so as to obtain corresponding compaction density data; obtaining a first compaction characteristic curve on the basis of the respective roll gap values and the compaction density data corresponding to the roll gap values, and obtaining a second compaction characteristic curve on the basis of the respective rolling pressure values and the compaction density data corresponding to the rolling pressure values; and by means of the first compaction characteristic curve and/or the second compaction characteristic curve, determining the limiting compaction density of the electrode sheet objectively and rapidly, thereby improving the battery performance and production efficiency.

ELECTROCHEMICAL APPARATUS AND ELECTRIC DEVICE

Resumen de: US20260331648A1

An electrochemical apparatus includes a housing, an electrode assembly, and a first adhesive component. The electrode assembly is disposed within the housing. The electrode assembly includes a first side surface and a second side surface opposite each other along a first direction, and a third side surface and a fourth side surface opposite each other along a second direction. The second direction is perpendicular to the first direction. The first adhesive component includes a first side portion and a second side portion opposite each other. The first side portion includes a first adhesive region, a first non-adhesive region, and a second adhesive region arranged sequentially. The first adhesive region is adhered to the first side surface. The second adhesive region is adhered to the second side surface. The second side portion includes a third adhesive region. The third adhesive region is adhered to the housing.

BATTERY CELL, BATTERY, AND ELECTRIC DEVICE

Resumen de: US20260331695A1

Provided are a battery cell, a battery including the battery cell, and an electric device. The battery cell includes a housing having a first wall portion and a pressure relief component disposed on the first wall portion. The pressure relief component includes a first groove defining a predetermined pressure relief region and is configured to crack along at least part of the first groove during pressure relief. The pressure relief component further includes a groove group corresponding to the predetermined pressure relief region. The groove group includes a plurality of second grooves spaced apart in a width direction, and the second grooves guide at least a portion of the predetermined pressure relief region to flip to open the predetermined pressure relief region.

BATTERY THERMAL RUNAWAY SUPPRESSION METHOD AND APPARATUS, DEVICE, STORAGE MEDIUM AND PROGRAM PRODUCT

Resumen de: WO2026219307A1

A battery thermal runaway suppression method and apparatus, a device, a storage medium and a program product. The method comprises: on the basis of thermophysical parameters corresponding to a battery to be treated during a thermal runaway process, a convective heat transfer coefficient of a freezing medium used for freezing a thermal runaway front of said battery, a preset first length and a thermal runaway front freezing formula, determining a first corresponding relationship between a battery thickness and a second length; then, on the basis of a fourth length of said battery, a preset proportionality coefficient, the first corresponding relationship and the first length, determining the target battery thickness for battery thickness adjustment; and finally, disassembling said battery to obtain an electrode sheet group having the target battery thickness, re-packaging the electrode sheet group to obtain a target battery, placing part of the target battery in the freezing medium, exposing a region of the battery out of the liquid surface of the freezing medium, said region having the first length in a propagation direction of the thermal runaway front, and freezing the thermal runaway front.

TERNARY POSITIVE ELECTRODE MATERIAL, PREPARATION METHOD THEREFOR AND LITHIUM BATTERY

Resumen de: WO2026218536A1

The present disclosure relates to the technical field of positive electrode materials. Disclosed are a ternary positive electrode material, a preparation method therefor and a lithium battery. As a polycrystalline ternary positive electrode material is a secondary particle obtained by assembling a plurality of primary particles, the size dr, the arrangement angle θ and the porosity ε of the primary particles, and the distribution proportion formula (I) of large and small particles in the ternary positive electrode material all have significant impacts on the internal stress accumulation and yield limit of the secondary particles caused by anisotropic volume expansion and contraction during charging and discharging of the primary particles. The described product parameters have mutually coordinated impacts, and by using the described parameters to construct an expression of a stability parameter F of the ternary positive electrode material and making F satisfy a specific range, the structural stability of the ternary positive electrode material can be improved, and stress fatigue can be dealt with, so as to reduce the generation of micro-cracks, thus improving the cycle performance of batteries.

NEGATIVE ELECTRODE MATERIAL, SECONDARY BATTERY, AND ELECTRIC DEVICE

Resumen de: WO2026218942A1

Provided are a negative electrode material, a secondary battery, and an electric device. The negative electrode material comprises a carbonaceous material, and satisfies the following relational expression: 0.4≤DV50×S/|P-OI/4.8|×210≤1.1, wherein DV50 μm represents the corresponding particle size when the cumulative volume percentage of the negative electrode material reaches 50%; S m2/g represents the specific surface area of the negative electrode material; P g/cm3 represents the powder compaction density of the negative electrode material under a load of 5 T; and OI represents the degree of graphite orientation of the negative electrode material, and is a peak intensity ratio of a diffraction peak (004) to a diffraction peak (110) in an XRD pattern.

BATTERY APPARATUS AND ELECTRIC DEVICE

Resumen de: WO2026218443A1

The present disclosure relates to the technical field of batteries, and provides a battery apparatus and an electric device. The battery apparatus comprises a case, at least two battery cells, and a heat exchange assembly. The at least two battery cells are arranged in the case. The heat exchange assembly comprises at least two heat exchange members; at least one heat exchange member is configured as a flexible member; at least one heat exchange member is configured as a rigid member; the flexible member and the rigid member are stacked to define a medium flow channel; the medium flow channel is used for conducting a heat exchange medium; the heat exchange medium is used for exchanging heat with the at least two battery cells; and the rigid member is configured as a part of the case.

HEAT EXCHANGE ASSEMBLY, BATTERY DEVICE AND ELECTRIC DEVICE

Resumen de: WO2026218707A1

A battery device (100), comprising a box (20), a heat exchange assembly (30), and a plurality of battery cells (10), wherein the plurality of battery cells (10) are arranged in the box (20); and the heat exchange assembly (30) comprises a heat exchange member (31) and a current collector (32). At least one medium flow channel (313) is provided inside the heat exchange member (31), the at least one medium flow channel (313) is configured for the passing of a heat exchange medium, and the heat exchange medium is configured to exchange heat with the plurality of battery cells (10). The current collector (32) is provided with a current collection space (323) and a liquid-passing port (324), which is in communication with the current collection space (323), and the current collection space (323) is in communication with at least part of the medium flow channel (313). At least part of the heat exchange member (31) and/or at least part of the current collector (32) are/is configured as a rigid structure, and at least part of the heat exchange member (31) and/or at least part of the current collector (32) are/is configured as a flexible structure, such that the heat exchange member (31) is flexibly connected to the current collector (32); the elastic modulus of the rigid structure is greater than that of the flexible structure; and the heat exchange member (31) comprises a heat exchange body (311), wherein the heat exchange body (311) is configured as a rigid structure, and the mediu

THERMAL MANAGEMENT SYSTEM AND VEHICLE

Resumen de: WO2026219077A1

Provided in the present application are a thermal management system and a vehicle. The thermal management system comprises: a heating loop, a waste heat recovery loop and a battery thermal management loop, the heating loop being provided with a first heat exchanger and a proportional valve; the waste heat recovery loop is in heat exchange connection with the first heat exchanger, the battery thermal management loop is connected to a heat exchange component of a battery, and the heating loop and the battery thermal management loop are connected by means of a first multi-way valve. The thermal management system further comprises a control device, and the control device is used for controlling heating of the battery, comprising: determining whether the battery needs to be heated; determining whether a heat source satisfies a heat exchange requirement; and if the battery needs to be heated and the heat source satisfies the heat exchange requirement, enabling the heating loop to exchange heat with the waste heat recovery loop, and enabling the heating loop to be communicated with the battery thermal management loop. In the solution of the present application, waste heat generated by the heat source is introduced to heat the battery, such that the heat utilization rate of the thermal management system is higher, thus reducing overall energy consumption.

BATTERY EARLY-WARNING METHOD AND SYSTEM, AND DEVICE

Nº publicación: WO2026218451A1 22/10/2026

Solicitante:

HUNAN DESAY BATTERY CO LTD [CN]
\u6E56\u5357\u5FB7\u8D5B\u7535\u6C60\u6709\u9650\u516C\u53F8

Resumen de: WO2026218451A1

The present application relates to the technical field of battery safety monitoring, and discloses a battery early-warning method and system, and a device. The method comprises: when a battery is charged according to a preset charging regime or discharged according to a preset discharging regime in a normal-temperature environment, acquiring a temperature value and a gas pressure value of the battery in real time; selecting, for the battery, a standard gas pressure value and a lithium plating alarm threshold which correspond to a current temperature value, and acquiring a current gas pressure change rate of the battery; and determining whether a current gas pressure value of the battery is less than the standard gas pressure value, if yes, determining that the battery is in a normal operating state, or otherwise, determining whether the current gas pressure change rate of the battery is greater than or equal to the lithium plating alarm threshold, and if yes, determining that the battery is in an abnormal operating state and issuing an early-warning signal. In the present application, the temperature value and the gas pressure value of the battery are acquired in real time, whether the battery is in the abnormal operating state is determined on the basis of the standard gas pressure value and the lithium plating alarm threshold, which correspond to the current temperature value, of the battery, and early warning is performed when the battery is in the abnormal operating state