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BATTERY CELL, BATTERY, ELECTRIC DEVICE, AND MANUFACTURING METHOD FOR BATTERY CELL

Resumen de: EP4607685A1

The embodiments of the present application belong to the technical field of batteries. Provided are a battery cell, a battery, an electric device, and a manufacturing method for a battery cell. The battery cell comprises: an electrode assembly and an electrode lead-out member, wherein the electrode assembly comprises a body and a tab; the electrode lead-out member is configured to conduct electric energy of the electrode assembly and comprises a first part; and the tab comprises a first connecting section and a second connecting section, which are sequentially connected, the first connecting section being connected to the body, the second connecting section being bent relative to the first connecting section, and at least one of the first connecting section and the second connecting section being connected to the first part. The assembly efficiency of the battery cell is relatively high.

SULFIDE SOLID ELECTROLYTE AND METHOD FOR PRODUCING SAME, ELECTRODE MIXTURE, SOLID ELECTROLYTE LAYER, AND ALL-SOLID-STATE LITHIUM ION SECONDARY BATTERY

Resumen de: EP4607539A1

The present invention pertains to a sulfide solid electrolyte that contains Li, P, S, and Ha, and that has an argyrodite-type crystal structure. The crystal structure has a plurality of PS4 tetrahedrons T1 in which a part of elements is optionally substituted. In the sulfide solid electrolyte, 16 elements that serve as apexes of the PS4 tetrahedrons T1 exist in a unit lattice, and the average value of the distance Δ, obtained by making said elements correspond to the S element positions at 16e sites of a PS4 tetrahedron T2 of a space group F-43m, is 0.05-0.30 Å.

POWER FEEDING SYSTEM, ELECTRIC TOOL SYSTEM, AND POWER FEEDING DEVICE

Resumen de: EP4607751A1

An object of the present disclosure is to provide a power feeding system capable of improving the working efficiency. A power feeding system (10) for feeding power to an electric tool (21) which is hand-holdable. The power feeding system (10) includes a first storage battery (111), a feed circuit (112), a second storage battery (211), and a tool holder (12). The feed circuit (112) is configured to convert alternating-current power from a commercial power supply (300) into direct-current power and feed the direct-current power to the first storage battery (111). The second storage battery (211) is internal to the electric tool (21) or is internal to a battery pack (22) attachable to the electric tool (21). The tool holder (12) is capable of holding a battery-equipped electric tool (2) and is configured to, while holding the battery-equipped electric tool (2), feed electric power of the first storage battery (111) to the second storage battery (211). The battery-equipped electric tool (2) is the electric tool (21) to which the second storage battery (211) is internal or the electric tool (21) with the battery pack (22) attached, the second storage battery (211) being internal to the battery pack (22).

DATA INTERPOLATION SYSTEM, DATA INTERPOLATION METHOD, AND DATA INTERPOLATION PROGRAM

Resumen de: EP4607216A1

In a data interpolation system 10, a data acquirer 111 acquires battery data including at least time-series data of a current and SOC (State Of Chage). A missing part judgment unit 113 judges whether or not the battery data includes a missing section. An interpolation unit 115 interpolates battery data in the missing section based at least on battery data in a section other than the missing section. When at least one of the states before and after the missing section is a charging state, the interpolation unit 115 interpolates current data in the missing section so that a discharge amount and a charge amount correspond in a charging/discharging period from SOC in the charging state immediately after the missing section to corresponding SOC found in the past direction or in a charging/discharging period from SOC in the charging state immediately before the missing section to corresponding SOC found in the future direction.

BIAXIALLY ORIENTED POLYAMIDE FILM FOR COLD MOLDING

Resumen de: EP4606844A1

Problem To provide a biaxial polyamide film, which is suitable for cold molding and which is excellent in cold moldability, has excellently low hygroscopicity, and can be used for the outermost layer of a battery external material even in a single membrane form.Solution This biaxially oriented polyamide film for cold molding comprises 80-100 mass% of polyamide 11, wherein in a direction in which an F30/upper yield stress value, which is a value obtained by dividing stress (F30) with a 30% elongation by upper yield stress, is larger among the film flow direction and the film width direction, the F30/upper yield stress value is 2.0-3.0.

ELECTRONIC DEVICE AND PROGRAM

Resumen de: EP4607741A1

An electronic device having a control unit and a first battery, wherein, when a second battery is provided to a cover member attached to a device main body, and a residual power of the second battery is a pre-determined reference value or higher, the control unit switches a supply of power for some electronic components provided to the device main body from the first battery to the second battery.

EXPLOSION PREVENTION VALVE, COVER PLATE ASSEMBLY, BATTERY CORE, BATTERY PACK, AND ELECTRICAL SYSTEM

Resumen de: EP4607069A1

An explosion prevention valve, a cover plate assembly, a battery core, a battery pack, and an electrical system are provided. The explosion prevention valve includes a main body (1), an explosion prevention piece (2), and a temperature-sensitive film (3). The main body is provided with a pressure relief hole (11) extending through a thickness direction thereof. The explosion prevention piece and the temperature-sensitive film are connected to the main body, and are arranged to cover the pressure relief hole. The temperature-sensitive film is made of plastic, and has a critical breaking pressure value which is inversely proportional to a temperature of the explosion prevention valve. A thickness of the temperature-sensitive film is A, and may be 0.05 mm ≤ A ≤ 0.5 mm. In technical solutions of the present disclosure, the temperature-sensitive film is arranged in the explosion prevention valve, and a dimension of the temperature-sensitive film is defined. Within the defined dimension, when the battery core is in a normal operating condition, the temperature-sensitive film and the explosion prevention piece can jointly cover the pressure relief hole of the main body, to increase an opening pressure of the pressure relief hole, so as to reduce a risk of accidentally opening the pressure relief hole, and when the battery core is out of control, a high temperature generated after the battery core is out of control quickly softens the temperature-sensitive film, to reduce the ope

SMARTCELL CLUSTER AND BATTERY PACKAGING FOR LOW ELECTROMAGNETIC FIELD EFFECT

Resumen de: EP4606629A1

Various technologies and embodiments are presented to minimize/mitigate electromagnetic field (EMF) effects and electromagnetic interference (EMI) effects generated in a battery module/battery pack when the battery module/battery pack is utilized with alternating current (AC) operation. Respective electrical flowpaths are created throughout a battery module such that EMF/EMI generated in a first portion of a flowpath negates EMF/EMI generated in an adjacent second portion of a flowpath. The battery module operates as a smartcell, wherein battery module comprises a pair of clusterboards located between a first cluster of battery cells and a second cluster of battery cells, wherein the central positioning of the pair of clusterboards functions to isolate the first cluster of battery cells from the second cluster of battery cells.

ANODE ACTIVE MATERIAL AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME

Resumen de: EP4607611A1

An anode active material according to embodiments of the present disclosure includes a silicon-based active material including core particles and a carbon coating which covers a surface of the core particles. An onset temperature of the silicon-based active material measured through a thermogravimetric analysis method is greater than 350°C and less than 390°C, and a ratio of a change value of a weight loss rate to a change value of a temperature of the silicon-based active material measured through a differential thermogravimetric analysis method is 0.000050 to 0.000150.

RECHARGEABLE BATTERY

Resumen de: EP4607637A2

A rechargeable battery of the present disclosure includes an electrode assembly comprising a plurality of electrodes stacked together and having a separator disposed between respective ones of the plurality of electrodes, and an adhesive member disposed at at least two of corner parts of the electrode assembly and attached to cover an upper surface, side surface, and lower surface of the electrode assembly.

PREVENTION OF AIR TRAP FORMATION DURING BIPOLAR STACK BATTERY FABRICATION

Resumen de: EP4607625A1

A bipolar stacked battery that prevents air from becoming trapped during formation of the bipolar stacked battery has a plurality of stacked battery cells. An electrically and ionically insulating frame is formed between each of the plurality of stacked battery cells.

NEGATIVE ELECTRODE CURRENT COLLECTOR, SECONDARY BATTERY, AND ELECTRICAL DEVICE

Resumen de: EP4607624A1

The present application provides a negative electrode current collector, a secondary battery, and an electrical device. The negative electrode current collector comprises a metal substrate and a conductive layer provided on at least one surface of the metal substrate, the negative electrode current collector has a Vickers hardness of 400 MPa-900 MPa, and the conductive layer has a thickness of 0.5 µm-6 µm, optionally 0.5 µm-5 µm. While the increase of the thickness of the conductive layer is controlled as much as possible, the overall hardness of the negative electrode current collector is improved, thereby improving the machinability of a negative electrode sheet while ensuring the high-capacity characteristic of the battery; moreover, the control on the hardness of the negative electrode current collector avoids the occurrence of a brittle failure in the machining process caused by an excessively high hardness of the negative electrode current collector. If the thickness of the conductive layer exceeds 6 µm, the negative electrode sheet is prone to edge collapse, and the powder is severely separated from the current collector and cutting cannot be performed, so that subsequent machining cannot be achieved.

BATTERY MANAGEMENT SYSTEM FOR MUETIPEE BATTERY CIRCUITS HAVING DIFFERENT VOLTAGES

Resumen de: WO2024112856A2

A battery management system for two or more battery circuits on a vessel in which the battery circuits may be charged by a motor on the vessel or by a power source positioned remotely from the vessel is disclosed. As such, the two battery circuits may have different nominal voltages configured to provide different voltages to different devices onboard the vessel. The battery management system may receive input power from the motor on the vessel to charge the battery circuits on the vessel. The battery management system may be configured such that when the battery management system is not receiving power from a motor on the vessel, the battery management system may receive power from a power source positioned remotely from the vessel, such as, a municipal power supply. The battery management system may also include a communication system enabling battery management data to be shared with users.

LITHIUM ION ELECTROLYTIC SOLUTION, GEL POLYMER ELECTROLYTE, AND LITHIUM ION BATTERY

Resumen de: EP4607641A1

In order to solve the problems of poor liquid retention capacity and poor cycle performance of a gel polymer electrolyte, provided is a lithium ion electrolytic solution, comprising a lithium salt, an organic solvent, a precursor, and an additive, wherein the additive comprises one or two of a zero-dimensional carbon nanomaterial and a quasi-zero-dimensional carbon nanomaterial, and a plasticizer. The gel polymer electrolyte is formed after the described lithium ion electrolytic solution is polymerized, has good liquid retention capacity, can keep good interfacial compatibility with an electrode, improves the interface resistance, and improves the normal-temperature cycle performance of the lithium ion battery. In addition, further provided is a corresponding lithium ion battery.

ELECTROLYTE SOLUTION OF LITHIUM-ION BATTERY AND LITHIUM SECONDARY BATTERY

Resumen de: EP4607644A1

An electrolyte solution of a lithium-ion battery and a lithium secondary battery. The electrolyte solution of a lithium-ion battery comprises an organic solvent, a lithium salt and an additive, wherein the organic solvent comprises fluorinated ethylene carbonate accounting for at least 5% of the total mass of the electrolyte solution, the additive comprises an additive A containing one or more compounds which have three or more carbon-carbon double bonds, and the electrolyte solution does not comprise a compound containing a sulfonyl group. The electrolyte solution of a lithium-ion battery is not only more environmentally friendly, but can also improve the swelling of the battery during the formation and high-temperature storage thereof, the discharge capacity of the battery, and the self-discharge performance of the battery under a high voltage.

CORE ROD FEEDING DEVICE AND BATTERY WINDING MACHINE

Resumen de: EP4607629A1

Disclosed is a mandrel feeding device and a battery winder. The mandrel feeding device has a dispensing station, an adjusting station and an adhesive application station. The mandrel feeding device includes: a transferring apparatus capable of moving to the dispensing station, the adjusting station, and the adhesive application station; a dispensing apparatus provided at the dispensing station and configured for storing mandrels and sequentially outputting mandrels one by one, wherein the transferring apparatus, when moved to the dispensing station, is capable of receiving the mandrels output by the dispensing apparatus; an adjusting apparatus provided at the adjusting station and configured for causing a mandrel, which is transferred to the adjusting station by the transferring apparatus, to rotate, until the positioning portion of the mandrel is located at the preset position; an adhesive application apparatus provided at the adhesive application station and configured for applying a double-sided adhesive layer onto a mandrel transferred to the adhesive application station by the transferring apparatus; a feeding apparatus configured for gripping a mandrel on the transferring apparatus and transferring gripped mandrel to a winding mechanism.

BATTERY CONTROL SYSTEM AND BATTERY CONTROL METHOD

Resumen de: EP4607750A1

A battery control system (1) includes: pressure application means (16) that applies pressure to a battery module (2) by pressing the battery module (2) along a stacking direction of battery cells (21) having a negative electrode including a solid electrolyte and lithium; a controller (10) that adjusts the value of the pressure by controlling the pressure application means (16); and discharge means (15) that executes balancing of remaining discharge capacities among the battery cells (21) in the battery module (2); wherein the controller (10) starts a first pressurization control for increasing the pressure by the pressure application means (16) to a predetermined pressure or higher before the balancing is started.

ELECTRODE ASSEMBLY TAPING DEVICE AND METHOD OF RECHARGEABLE BATTERY

Resumen de: EP4607636A1

An electrode assembly taping device of a rechargeable battery comprises: a cell seating jig; a bending jig that is separately disposed at both sides of the cell seating jig to adsorb a cut tape and relatively raise and lower the cell seating jig in a height direction; a gripper that introduces a wound or stacked electrode assembly to seat the electrode assembly on the cell seating jig; and an attachment roller that attaches the tape to the electrode assembly together with a relative raising and lowering operation of the cell seating jig and the bending jig and an operation of the gripper. The cell seating jig comprises a non-contact portion that is in non-contact with an outer line of the tape.

BATTERY PACK

Resumen de: EP4607680A1

Disclosed herein relates to a battery pack for accommodating a plurality of cell assemblies, including: a pack case where the cell assembly is seated; an upper case coupled to the pack case to cover an upper part of a cell assembly seated inside the pack case; and at least one spark prevention member comprising a plurality of mesh holes, and provided at a lower end of the upper case, wherein the pack case includes at least one discharge hole communicating with the interior space in a side part, and the spark prevention member is provided at a location corresponding to a discharge hole of the pack case.

PRE-SODIUM TREATED POSITIVE ELECTRODE MATERIAL FOR COPPER-ZINC-BASED SODIUM ION BATTERY AND METHOD OF PREPARING THE SAME

Resumen de: EP4606773A1

The present invention provides a pre-sodium treated positive electrode material for copper-zinc-based sodium ion battery and method of preparing the same. The method comprises obtaining a mixed solution containing copper-zinc-based elements through wet pre-sodium first, then conducting spray drying of the mixed solution containing copper-zinc-based elements to obtain precursor powder of positive electrode material for copper-zinc-based sodium ion battery, and then mixing the precursor powder with a sodium source for sintering, coating and crushing to obtain positive electrode material for copper-zinc-based sodium ion battery. The pre-sodium treated positive electrode material for copper-zinc-based sodium ion battery provided by the present invention introduces weakly oxidizing zinc and nickel elements on the basis of the copper-based material, reducing the use of highly oxidizing copper and iron elements. After being prepared into a battery, the oxidation of metal ions in the electrochemical environment is reduced overall, greatly reducing the oxidation of copper ions to the electrolyte, reducing the CO₂ gas generated by oxidation and decomposition of the electrolyte, stabilizing the electrochemical environment, and improving the electrical performance of the battery.

NONAQUEOUS ELECTROLYTE AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Resumen de: EP4607649A1

A non-aqueous electrolyte includes a lithium salt, an organic solvent, a compound represented by Formula 1 as a first additive, and a compound represented by Formula 2 or Formula 3 as a second additive, wherein in Formula 1 R represents any one selected from a C1-5 perfluoroalkyl group, a C2-10 alkenyl group, and a C2-10 alkynyl group; in Formula 2, R₁ represents a C1-3 alkylene group that can be substituted with fluorine, and R₂ to R₄ each independently represent any one selected from the group consisting of H, a C1-3 alkyl group, and a nitrile group; in Formula 3, R₅ represents a C1-8 alkylene group that can be substituted with fluorine, and R₆ represents any one selected from the group consisting of H, a C1-10 alkyl group, and a C3-8 cycloalkyl group:

POST TERMINAL END ASSEMBLING METHOD FOR CYLINDRICAL BATTERY

Resumen de: EP4607689A1

The present invention relates to the field of cylindrical battery technologies, and in particular, to a method for assembling a pole terminal of a cylindrical battery. Specific steps are as follows: step 1: laser welding an irregular-shaped screw at a central position of a current collector plate, to form a composite current collector plate; step 2: laser welding the current collector plate to a tab of a core; step 3: covering the current collector plate with an insulating sheet; step 4: covering the insulating sheet and the core with a housing with an opening facing downward, where the irregular-shaped screw extends upward through an irregular-shaped hole to reach an outer side of a top of the housing; step 5: combining a nut and a nut seal gasket to form a composite nut; step 6: rotatably mounting the composite nut on the irregular-shaped screw; and step 7: welding and fixing a threaded fit between the nut and the irregular-shaped screw from above with laser. A positioning requirement in an assembly process is met, and a good electrical connection can be ensured. The yield of a processing process is significantly increased. In addition, the internal space of a cylindrical battery is fully saved. The material of a nut can be flexibly selected for a pack application end, so that the production line compatibility is high.

POUCH-TYPE SECONDARY BATTERY

Resumen de: EP4607681A1

A pouch type secondary battery according to the present invention includes an electrode assembly, a pouch type case including an accommodation portion for accommodating the electrode assembly and a sealing portion for sealing the accommodation portion, an electrode lead connected to the electrode assembly and protruding to the outside of the pouch type case via the sealing portion, a lead film disposed between the electrode lead and the pouch type case, and a gas guide portion disposed between the electrode lead and the lead film. The gas guide portion includes a first layer in contact with the electrode lead, and a second layer disposed on the first layer, and the first layer includes a modified polyolefin resin.

POUCH-TYPE SECONDARY BATTERY

Resumen de: EP4607663A1

A pouch type secondary battery according to the present invention includes an electrode assembly, a pouch type case including an accommodation portion for accommodating the electrode assembly and a sealing portion for sealing the accommodation portion, an electrode lead connected to the electrode assembly and protruding to the outside of the pouch type case via the sealing portion, a lead film disposed between the electrode lead and the pouch type case, and a gas guide portion disposed between the electrode lead and the lead film, wherein the gas guide portion includes a first layer in contact with the lead film, and the first layer includes a polymer film having a storage modulus of 30 MPa to 650 MPa measured at 100 °C.

HIGH-CAPACITY LONG-CYCLE LIFE LOW-COBALT SINGLE CRYSTAL POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR

Nº publicación: EP4607607A1 27/08/2025

Solicitante:

BASF SHANSHAN BATTERY MAT CO LTD [CN]
BASF Shanshan Battery Materials Co., Ltd

Resumen de: EP4607607A1

The present application belongs to the technical field of lithium battery positive electrode materials, and discloses a low-cobalt single crystal positive electrode material with high capacity and long cycle life. The interior of the particle is divided into a first region and a second region, and the cobalt concentrations in the first and second region are in a gradient distribution, decreasing from outside to inside at decreasing rates of 6% to 20% and 0.1% to 6% per 100 nm, respectively. This design can significantly improve the initial charge/discharge capacity and rate performance, and can significantly enhance the high-temperature cycling performance. The method for preparing the low-cobalt single crystal positive electrode material is also provided, which has a simple process and low cost. Through appropriate selection of small particles of high-nickel low-cobalt precursors, combined with element doping, coating modification, and dry sintering processes, the method can regulate particle size morphology and structure of the low-cobalt single crystal positive electrode material, and modify the crystal structure and the surface material, resulting in a two-tier decreasing cobalt concentration gradient distribution from the outside to the inside, which addresses the common issues of high-nickel low-cobalt positive electrode materials, such as high residual lithium content, poor power performance and cycling performance, and inferior safety performance.