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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 CELLS AND BATTERY MODULES

Resumen de: EP4607668A1

Disclosed are battery cells and battery modules including a battery cell. The battery cells and battery modules are capable of releasing a high-temperature/high-pressure gas if thermal runaway occurs in a battery cell so as to protect other battery cells. The battery module includes a battery cell including a safety vent on a top surface thereof, a case configured to accommodate the battery cell, and an insulating cover disposed on a top surface of the battery cell and including a section disposed on the safety vent, wherein the section includes a notch.

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.

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.

DOPED POLYANION MATERIAL, AND PREPARATION METHOD THEREFOR AND USE THEREOF

Resumen de: EP4607622A1

The present invention discloses a doped polyanion material, a preparation method therefor, and use thereof. The doped polyanion material of the present invention has a chemical formula of Na4+xMxFe3-x(PO4)2P2O7, where M is a monovalent cation and is doped at a Fe position, and 0.03 ≤ x ≤ 0.3.In the doped polyanion material of the present invention, a bivalent element Fe is partially substituted by the monovalent cation M, which not only can reduce a band gap to increase the electronic conductivity of the polyanion material and improve the electrochemical activity of the polyanion material, thus enhancing the specific capacity and rate capability of the polyanion material; but also can effectively increase the Na content in the interstitial site of the polyanion material such that the Na content in Na4+xMxFe3-x(PO4)2P2O7 is greater than 4 to obviously accelerate the diffusion of Na ions, thereby significantly improving the rate capability of the polyanion material; and the lattice distortion of the polyanion material during sodium removal can be further inhibited to enhance the cyclic stability of the polyanion material.

DOPED MANGANESE-BASED PRUSSIAN WHITE POSITIVE ELECTRODE MATERIAL, AND PREPARATION METHOD THEREFOR AND USE THEREOF

Resumen de: EP4607621A1

Disclosed in the present invention are a doped manganese-based Prussian white positive-electrode material, a preparation method therefor, and use thereof. The doped manganese-based Prussian white positive-electrode material of the present invention has a chemical formula of Nan-dAdMn1-xMxFe(CN)6y•zH2O, where A is one or more of Li<+>, K<+>, Rb<+>, Cs<+>, NH4<+>, Cu<+>, or Ag<+>; M is one or more of Ni<2+>, Fe<2+>, Co<2+>, Zn<2>, or Cu<2+>; and 1.7 ≤ n ≤ 2, 0.02 ≤ d ≤ 0.2, 0.2 ≤ x ≤ 0.4, 0.9 ≤ y < 1, and 0 < z < 0.8. In the doped manganese-based Prussian white positive-electrode material of the present invention, positions Mn and Na are co-doped. Two doping ions of M and A are mutually synergistic to not only effectively inhibit the Jahn-Teller effect of Mn<3+>, but also to substantially reduce the content of crystal water in the positive-electrode material. Meanwhile, such a configuration further achieves the effects of reducing lattice defects, enhancing lattice stability and transport dynamics of Na ions such that the doped manganese-based Prussian white positive-electrode material has high capacity, good rate capability, and excellent cyclic stability.

Process for the preparation of silicon-containing composite particles

Resumen de: GB2638575A

The invention relates to a process for preparing composite particles, the process comprising the steps of: (a) providing a plurality of porous particles in a pressure reactor; (b) contacting the plurality of porous particles with a silicon precursor gas at conditions effective to cause deposition of silicon in the pores of the porous particles to provide composite particles comprising a porous particle framework and elemental silicon within the pores of the porous particle framework.

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.

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.

PRESSING PLATE MODULE, PRODUCTION LINE AND CONTROL METHOD

Resumen de: EP4607632A1

Embodiments of this disclosure provide a press plate module (10), a production line, and a control method, which are configured for battery assembly operations. The press plate module (10) includes a press plate assembly (11) and a mounting seat assembly (12), one of the mounting seat assembly (12) and the press plate assembly (11) is provided with a stop element (121) and the other is provided with a stop surface (11a), and the stop element (121) is selectively extendable and retractable; and the press plate module (10) includes a locked state and an unlocked state. In the locked state, the stop element (121) is in an extended state and abuts against the stop surface (11a), such that the press plate assembly (11) is fixed with the mounting seat assembly (12), and the mounting seat assembly (12) is able to drive the press plate assembly (11) to move, such that the press plate assembly (11) presses against or is separated from a battery (50). In the unlocked state, the stop element (121) is in a retracted state and separated from the stop surface (11a), such that the press plate assembly (11) is separated from the mounting seat assembly (12). According to the embodiments of this disclosure, the press plate module (10) realizes the conversion between the locked state and the unlocked state of the press plate module (10) by controlling the stop element (121) to extend and retract, thereby reducing the process steps of replacing the press plate assembly (11) and improving the wor

BATTERY CELL, BATTERY AND ELECTRICAL DEVICE

Resumen de: EP4607691A2

Embodiments of the present disclosure provide a battery cell (20), a battery (100), a power consumption device, and a device and a method for manufacturing a battery cell (20). The battery cell comprises an electrode assembly (22), a housing (21), an end cover (23), and a first insulation member (25). The electrode assembly (22) comprises a first tab (222). The housing (21) is configured to accommodate the electrode assembly (22), the housing (21) has an opening (211), and a first limiting portion (212) is formed on an inner circumferential wall of the housing (21). The end cover (23) is configured to cover the opening (211), and in a thickness direction of the end cover (23), the first limiting portion (212) is configured to limit movement of the end cover (23) in a direction towards the electrode assembly (22). The first insulation member (25) is at least partially provided between the first tab (222) and the first limiting portion (212), so as to insulate and isolate the first tab (222) from the first limiting portion (212). The first insulation member (25) insulates and isolates the first tab and the first limiting portion, thus reducing the risk of safety problem caused by short circuit inside the battery cell due to electrical connection formed between the first tab (222) and the first limiting portion (212) caused by contact of the first tab (222) with the first limiting portion (212) as the first tab (222) becomes loose towards the end cover (23).

POSITIVE ELECTRODE SHEET, LITHIUM ION SECONDARY BATTERY, AND EVTOL

Resumen de: EP4607619A1

The present disclosure provides a positive electrode sheet, including a positive electrode current collector and a coating layer applied to the surface of the positive electrode current collector, wherein the coating layer comprises a nickel-containing positive electrode material and a conductive agent, and the coating layer satisfies a relational expression as shown in Formula I: 3<a*c/100b<5 Formula I; in Formula I, a is the molar percentage content of nickel in the nickel-containing positive electrode material, b is the mass percentage content of the conductive agent in the coating layer, and c is the one side areal density of the coating layer and the unit thereof is mg/cm². In the present disclosure, when the positive electrode sheet satisfies the formula shown in Formula I, the lithium ion battery prepared from the positive electrode sheet can obtain excellent DCR performance while ensuring the energy density and cycle life of a cell.

INSULATION DIAGNOSIS CIRCUIT AND BATTERY SYSTEM INCLUDING SAME

Resumen de: EP4607223A1

Provided is an insulation diagnostic circuit for diagnosing an insulation state of a battery pack, the circuit including: a first resistor and a second resistor connected in series between a positive terminal of the battery pack and a first node; a first switch connected between a second node to which the first resistor and the second resistor are connected and a negative terminal of the battery pack; a third resistor connected between the first node and a third node; and a fourth resistor connected in series between the third node and the negative terminal of the battery pack.

BATTERY MODULE AND BATTERY PACK INCLUDING SAME

Resumen de: EP4607670A1

A battery module according to an embodiment of the present disclosure includes a battery cell stack in which a plurality of battery cells are stacked; a module frame that houses the battery cell stack and is opened on one surface and the other surface facing each other; an end plate that covers each of the one surface and the other surface of the module frame; and a film member located between the battery cell stack and the module frame. The module frame includes a first joint surface formed on sides constituting the one surface and the other surface respectively, and the end plate includes a second joint surface joined to the first joint surface. A rib is formed in the end plate, with the rib protruding while being located inner than the portion where the first joint surface and the second joint surface are joined. The film member includes a protrusion part that protrudes in a direction perpendicular to one surface of the film member.

POSITIVE ELECTRODE ACTIVE MATERIALS, POSITIVE ELECTRODES, AND RECHARGEABLE LITHIUM BATTERIES

Resumen de: EP4607616A1

A positive electrode active material, a positive electrode, and a rechargeable lithium battery including the positive electrode are disclosed. The positive electrode active material includes a first positive electrode active material including a core particle in a form of secondary particles including a layered lithium nickel-manganese-based composite oxide and provided by agglomerating a plurality of primary particles and a second positive electrode active material including a core particle including a layered lithium nickel-manganese-based composite oxide and in a form of single particles. The first positive electrode active material and the second positive electrode active material each independently further include an aluminium coating layer on the surface of the core particle, and an average particle diameter (D₅₀) of the second positive electrode active material is smaller than that of the first positive electrode active material.

GRINDING APPARATUS FOR RECHARGEABLE BATTERY MATERIALS

Resumen de: EP4606481A1

A grinding apparatus of the present disclosure includes a body member including an inlet through which raw material is introduced; a fixing member installed inside the body member; a rotation member installed inside the body member and positioned spaced apart from the fixing member; and a driving member installed outside of the body member and configured to rotate the rotation member, wherein the rotation member includes a disk coupled to the driving member; a first pattern inserted to a certain depth on the disk and including a plurality of first lines positioned parallel to each other; a second pattern inserted at a certain depth on the disk and including a plurality of second lines arranged to intersect the plurality of first lines and positioned parallel to each other; and a grinding portion that is positioned between the plurality of first lines and the plurality of second lines, and protrudes to the outside to grind raw material.

POSITIVE ELECTRODE ACTIVE MATERIAL, POSITIVE POLE PIECE, SECONDARY BATTERY, AND ELECTRICAL APPARATUS

Resumen de: EP4607609A1

The present application provides a positive electrode active material. The positive electrode active material comprises: an aggregate material, the chemical formula of the aggregate material being LiaNixCoyM1-x-yO2-b, wherein 0.6 ≤ a ≤ 1.2, 0.6 ≤ x ≤ 1, 0 ≤ y ≤ 0.4, and -0.1 ≤ b ≤ 0.1, and M comprises one or more of Mn, Al, B, Zr, Sr, Y, Sb, W, Ti, Mg, Nb, and Mo; primary particles of the aggregate material have a particles size of 100-600 nm, and the particle size distribution of the aggregate material satisfies (Dv90-Dv10)/Dv50 ≥ 1.6. The positive electrode active material can increase the compaction density of a pole piece, increase the energy density of a battery, and satisfy the requirements of a high-energy-density battery.

APPARATUS FOR MANUFACTURING SECONDARY BATTERY, AND METHOD FOR MANUFACTURING SECONDARY BATTERY BY USING SAME

Resumen de: EP4607181A1

A secondary battery manufacturing apparatus according to example embodiments includes an analyzer configured to generate a merged image including a plurality of portions of a material sheet, based on the plurality of images of the material sheet. The analyzer is configured to determine a spatial frequency of the periodic defects of the material sheet, based on the merged image.

ELECTROLYTE, BATTERY AND ELECTRIC DEVICE

Resumen de: EP4607648A1

Provided are an electrolyte, a battery, and a power-consuming device. The electrolyte is applicable to a lithium metal secondary battery. The electrolyte includes a lithium salt and a solvent. The solvent includes an epoxy compound substituted with a fluoroalkyl chain. Therefore, the use of the electrolyte including the epoxy compound substituted with the fluoroalkyl chain can improve cycle stability on both a positive electrode side and a negative electrode side of the battery, prolonging a cycle life of the battery.

BATTERY CELL, BATTERY, AND ELECTRIC DEVICE

Nº publicación: EP4607687A1 27/08/2025

Solicitante:

CONTEMPORARY AMPEREX TECHNOLOGY HONG KONG LTD [HK]
Contemporary Amperex Technology (Hong Kong) Limited

Resumen de: EP4607687A1

The present application discloses a battery cell, a battery, and an electrical apparatus, wherein the battery cell includes an electrode assembly, a shell, and an electrode terminal; the electrode assembly is at least partially accommodated in the shell; the electrode terminal is electrically connected to the electrode assembly; the electrode terminal is arranged on a wall portion of the shell, the electrode terminal includes a first metal layer and a second metal layer that are made of different materials; in the thickness direction of the wall portion, the first metal layer is located on one side of the second metal layer facing the electrode assembly; the first metal layer and the second metal layer are connected to form a connecting interface, and at least a part of the connecting interface is a curved surface. According to the battery cell provided in the embodiments of the present application, at least a part of the connecting interface between the first metal layer and the second metal layer that are made of different materials is set to be the curved surface, which effectively enhances the strength of connection between the first metal layer and the second metal layer, lowers a risk of breakage of the electrode terminal, and is beneficial to improving performance of the battery cell.