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COATING DEVIATION CORRECTION METHOD AND DEVICE

Resumen de: EP4597597A1

A coating deviation correction method, comprising: acquiring a plurality of first distances and a plurality of second distances, wherein each of the plurality of first distances is the distance between the edge of a coating area on a first surface of an electrode sheet substrate and a reference edge, each of the plurality of second distances is the distance between the edge of a coating area on a second surface of the electrode sheet substrate and the reference edge, and the plurality of first distances and the plurality of second distances are obtained by sampling multiple times in one sampling period; and determining a target deviation correction amount in the coating process on the basis of the plurality of first distances, the plurality of second distances, and the at least one preset deviation correction amount. The method can effectively improve the performance of batteries. The present invention further relates to a coating deviation correction device.

Directly cooled battery module and battery with a directly cooled battery module

Resumen de: GB2637678A

The invention relates to a directly cooled battery module (100) comprising at least one module casing (40) and a plurality of battery cells (10) arranged within the module casing (40). The module casing (40) encloses the plurality of battery cells (10) at least in some regions, and the battery cells (10) has a vertical axis (20) and first and second end faces (16, 18), which are mutually spaced in the direction of the vertical axis (20), and are arranged successively in the form of a cell packet (38) in a stacking direction (26) which is transverse to the vertical axis (20). The battery module also comprises a fluid supply device (50) with at least one inlet opening (54), which conducts a cooling liquid (60) to the battery cells (10) when operated as intended, and at least one outlet opening (56) for freely discharging the cooling liquid (60) out of the module casing (40) and/or the cell packet (38) and into the surroundings of the module casing (40), in particular into a battery housing (210) when arranged in a battery housing (210) as intended. The invention additionally relates to a battery (200) comprising at least one directly cooled battery module (100).

NEW ANODE MATERIAL IN LITHIUM AND SODIUM BATTERIES

Resumen de: EP4597631A2

The invention pertains to the use of porous, chemically interconnected, carbon nanofibres-comprising carbon networks as electrochemically active material in the anode of lithium or sodium batteries. It has been found that said carbon nanofibres-comprising carbon networks can beneficially be used in the anode of lithium or sodium batteries when added in an amount of 10 - 100 wt%. The benefits include a high capacity, high lifetime (stability over extended cycling), high charge and discharge rate and being resilient during manufacture and use. The porous, chemically interconnected, carbon nanofibres-comprising carbon networks can be used in the anode of lithium or sodium batteries of many areas of technology, such as smartphones, laptops and electric and hybrid vehicles.

SECONDARY BATTERY, AND BATTERY MODULE, BATTERY PACK, AND DEVICE COMPRISING THE SECONDARY BATTERY

Resumen de: EP4597669A1

The present application refers to secondary battery and battery module, battery pack and apparatus including the secondary battery. In particular, the secondary battery includes a housing as well as an electrode assembly and an electrolyte contained in the housing; the electrode assembly includes a positive electrode plate, a negative electrode plate and a separator, and the positive electrode plate includes a positive current collector and a positive electrode film that is disposed on at least one surface of the positive electrode current collector and includes a positive electrode active material; the positive electrode active material includes one or more of lithium nickel cobalt manganese oxide and lithium nickel cobalt aluminum oxide; the negative electrode plate includes a negative electrode current collector and a negative electrode film that is disposed on at least one surface of the negative electrode current collector and includes a negative electrode active material; the negative electrode active material includes silicon-based material and carbon material; and the secondary battery satisfies: 0.05≤Z≤0.6. The secondary battery has the characteristics including high energy density, fast charging and long cycle life.

ION CONDUCTIVE CERAMIC AND METHOD FOR PREPARING SAME

Resumen de: EP4597521A2

The present invention relates to a ceramic solid electrolyte, which is a key component of an all-solid-state lithium secondary battery, for improving safety, and a method for synthesizing the same. The present invention relates to an oxide-based conductive ceramic of a new NASICON structure of the chemical formula Li1+xZr2XxP3-xO12 (X=Sn, Ge, or Y, 1.5≤ x≤2.3). The present invention relates to a method for manufacturing an oxide-based conductive ceramic having the above novel NASICON structure.

ELECTRODE ASSEMBLY, BATTERY CELL, BATTERY, AND ELECTRIC DEVICE

Resumen de: EP4597737A1

The present application relates to the technical field of batteries, and provides an electrode assembly, a battery cell, a battery, and an electric device. The electrode assembly comprises two electrode sheets having opposite polarities and a separator used for separating the two electrode sheets, the two electrode sheets and the separator being wound in a winding direction to form a main body and two tabs. The tabs and the main body are arranged in a first direction; each tab comprises a plurality of tab portions arranged at intervals in the winding direction; the tab portions are bent relative to the first direction; at least parts of the plurality of tab portions are stacked in the first direction; and a protrusion is formed on at least one side of each tab portion in the thickness direction thereof. By providing the protrusions on the tab portions, the thickness of the plurality of tab portions stacked together can be increased after the tab portions are bent, and the problem of a small local thickness of the tab can be alleviated, so that the risk that the tab is welded through in the subsequent assembly process is reduced, and reduction of damage to the electrode assembly is facilitated, improving the production quality of the battery cell comprising the electrode assembly.

POSITIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

Resumen de: EP4597606A1

A positive electrode (11) in a non-aqueous electrolyte secondary battery (10) according to an embodiment of the present invention contains, as a positive-electrode active material, a lithium transition metal composite oxide that has a layered structure and contains at least 75 mol% of Ni with respect to the total molar quantity of metal elements excluding Li. The lithium transition metal composite oxide is made of secondary particles formed by aggregation of primary particles. At least one selected from the group consisting of Ca and Sr, and at least one selected from the group consisting of W, Mo, Ti, Si, Nb, and Zr, are present at the interface between primary particles inside the secondary particles. An electroconductive auxiliary agent within a positive-electrode compound layer (31) includes at least one selected from the group consisting of particulate carbon materials having an average grain diameter of 20 nm or less and fibrous carbon materials having an average fiber diameter of 20 nm or less, the carbon materials containing carbon.

MANUFACTURING DEVICE FOR MIXTURE SHEET

Resumen de: EP4597593A1

This manufacturing device 1 for a mixture sheet S comprises: a first forming roller 4 and a second forming roller 6 that press a particulate dry-type electrode mixture P into a sheet form, thereby forming the mixture sheet S, the second roller 6 supporting and conveying the mixture sheet S on a circumferential surface 6b; and a first stretching roller 8 that stretches the mixture sheet S, the first stretching roller 8 being disposed so that a gap G1 between the first stretching roller 8 and the second forming roller 6 becomes smaller than the thickness T1 of the mixture sheet S that is supported by the second forming roller 6. The positional relationship between the first forming roller 4, the second forming roller 6, and the first stretching roller 8 is determined so that the rollers extend in a direction in which a first virtual line L1 and a second virtual line L2 intersect, the first virtual line L1 passing through a rotational axis 4a of the first forming roller 4 and a rotational axis 6a of the second forming roller 6, and the second virtual line L2 passing through the rotational axis 6a of the second forming roller 6 and a rotational axis 8a of the first stretching roller 8.

POWER STORAGE DEVICE

Resumen de: EP4597740A1

A power storage device (10) comprises: an electrode body (14) in which a positive electrode (11) and a negative electrode (12) are wound with a separator (13) therebetween; an exterior body (15) that serves to accommodate the electrode body (14) and has a bottomed cylinder shape with an opening therein; a sealing body (16) for closing the opening; a first insulating member (17); and a second insulating member (18). A safety valve for releasing the internal pressure in the exterior body (15) when said internal pressure rises to a level equal to or greater than a predetermined level is provided to one of the bottom section of the exterior body (15) and the sealing body (16). The first insulating member (17) is arranged between the electrode body (14) and the safety valve, the second insulating member (18) is arranged in a position facing the first insulating member (17) with the electrode body (14) therebetween, and while at a predetermined temperature, the amount of gas generated from the second insulating member (18) is greater than the amount of gas generated from the first insulating member (17).

POSITIVE ELECTRODE FOR LITHIUM BATTERY AND LITHIUM BATTERY

Resumen de: EP4597599A1

This positive electrode for a lithium battery includes a positive electrode active material containing manganese dioxide and a conductive auxiliary agent. The conductive auxiliary agent includes carbon black. The carbon black has an average primary particle size of 30 nm or more and a specific surface area of 1000 m²/g or more, and contains Al.

SEPARATOR AND ELECTRODE ASSEMBLY

Resumen de: EP4597722A2

The present disclosure relates to a separator for secondary batteries, the separator including: a porous substrate layer; and a fusion layer laminated to a preset fusion thickness on at least one area of one or both surfaces of the porous substrate layer and including polymer particles having a glass transition temperature higher than or equal to 30 °C or lower than or equal to 90 °C, an electrode assembly including the same, and a method of manufacturing the electrode assembly.

BATTERY CELL MATERIAL RECYCLING APPARATUS

Resumen de: EP4597658A1

Provided is a battery cell material recycling apparatus. The battery cell material recycling apparatus includes a first vacuum belt conveying mechanism and a second vacuum belt conveying mechanism. The first vacuum belt conveying mechanism has a first feed end and a first discharge end opposite to each other in a conveying direction of the first vacuum belt conveying mechanism. The second vacuum belt conveying mechanism has a second feed end and a second discharge end opposite to each other in a conveying direction of the second vacuum belt conveying mechanism. The second feed end is located above the first discharge end. A guide roller is disposed below the second discharge end. The guide roller is movable back and forth in the conveying direction of the second vacuum belt conveying mechanism. A battery cell material accommodated within the material receiving region in a zigzag stacked manner still does not experience excessive tension force. Thus, the problem of breakage can also be effectively avoided. Therefore, use of the battery cell material recycling apparatus in the present solution ensures the continuity of the battery cell material recycling process, improves an efficiency of the recycling operation, and eliminates a potential risk of breakage.

DIAMINE COMPOUND, POLYIMIDE ACID, POLYIMIDE, AND PREPARATION METHOD THEREFOR AND USE THEREOF

Resumen de: EP4596545A1

The present application provides a diamine compound, a polyimide acid, a polyimide, and a preparation method therefor and use thereof. The diamine compound has a chemical structural formula represented by formula (I),wherein R₁ and R₂ are independently selected from a single bond, substituted or unsubstituted alkylene, substituted or unsubstituted alkenylene, substituted or unsubstituted alkynylene, substituted or unsubstituted arylene, substituted or unsubstituted arylenealkyl, substituted or unsubstituted heteroarylene, substituted or unsubstituted heteroarylenealkyl, or substituted or unsubstituted alicylidene.

CATHODE FOR OXYGEN TREATMENT APPARATUS AND REFRIGERATOR

Resumen de: EP4597010A1

The present application provides a cathode for an oxygen processing device, and an oxygen processing device and refrigerator, wherein the cathode comprises: a mesh conductive film comprising at least one movable intersection point configured to absorb stress through movement. When the cathode is subjected to stress, since the movable intersection point on the mesh conductive film can absorb stress through movement, the stress can be transferred to and "concentrated" at the movable intersection point. The movement of the movable intersection point will not cause significant changes in a shape of the mesh conductive film. Therefore, the mesh conductive film as a whole will hardly undergo significant deformation due to stress, which is beneficial for improving the structural stability of the cathode.

BATTERY AND ELECTRICAL APPARATUS

Resumen de: EP4597738A1

A battery (100) and an electrical device (200) are disclosed. The battery (100) includes a plurality of battery cells (101). At least two of the battery cells (101) are disposed opposite to each other. At least one electrode post (121) of the two battery cells (101) disposed opposite to each other is located on one side of each of two battery cells (101), where the one side of one battery cell is oriented toward the one side of the other battery cell. An insulation structure (3) is disposed between the two battery cells (101) disposed opposite to each other. At least a part of the insulation structure (3) is located between the electrode posts (121) of the two battery cells (101), the electrode posts being oriented toward each other.

BATTERY TRAY ASSEMBLY, BATTERY PACK AND VEHICLE

Resumen de: EP4597709A1

A battery tray assembly (10), a battery pack (1) and a vehicle. The battery tray assembly (10) comprises: a tray (11) and electrically conductive members (12), the tray (11) forming a mounting space for accommodating battery modules (20) and insulating the battery modules (20) from each other, and the tray (11) being provided with detection ports (111); and the electrically conductive members (12) are at least partly arranged inside the tray (11) and are electrically connected to preset potential points, and the electrically conductive members (12) are at least partly exposed at the detection ports (111).

BATTERY AND ELECTRIC DEVICE

Resumen de: EP4597708A1

A battery (1000) and an electrical device (2000) are disclosed. The battery (1000) includes: a plurality of structural components (10), where the plurality of structural components (10) are arranged along a first direction (F1), at least one structural component (10) is a battery row (20), the battery row (20) includes at least one battery cell (21), the battery cell (21) includes a first surface (211), and the first surface (211) is provided with an electrical connection portion (22) and the first surface (211) is oriented toward an adjacent structural component (10); and a support piece (40), where the support piece (40) is disposed between the battery row (20) and the adjacent structural component (10) and is configured to space the first surface (211) and the adjacent structural component (10) apart by a fixed clearance.

SECONDARY BATTERY

Resumen de: EP4597659A1

A secondary battery including an electrode assembly 110 formed by winding a positive electrode sheet, a negative electrode sheet, and a separator interposed therebetween; a cylindrical can 130 configured to accommodate the electrode assembly; and a cap assembly 150 coupled to an open upper portion of the cylindrical can. The cap assembly includes a cap-up 151 having an upwardly protruding structure, a safety vent 153 disposed below the cap-up while surrounding an outer circumference of the cap-up, and a gasket 155 for sealing between the cap assembly and the cylindrical can. The gasket includes a side surface surrounding outer circumferential surfaces of the cap-up and the safety vent and includes an upper portion bent inwardly to cover a peripheral upper side of the cap-up.

BATTERY DIAPHRAGM AND LITHIUM BATTERY PREPARED THEREFROM

Resumen de: EP4597723A2

The present application provides a battery diaphragm, including: a porous substrate and an adhesive layer formed on the side of the porous substrate. The adhesive layer includes a polymer material with an adhesive property. The adhesive layer has a coating coefficient C. The coating coefficient C is equal to a ratio of the adhesive strength A of the adhesive layer to a value P of an increase in gas permeability per unit coating thickness of the adhesive layer. A relation C=A/P is satisfied. The coating coefficient C has a ratio in a range of 0.3<C<1. The adhesive strength A of the adhesive layer has a unit of N/m. The value P of the increase in the gas permeability per unit coating thickness of the adhesive layer has a unit of s/100cc/µm.

ELECTROLYTE FOR SODIUM SECONDARY BATTERY, SODIUM SECONDARY BATTERY, AND ELECTRICAL DEVICE

Resumen de: EP4597675A1

This application provides a sodium secondary battery electrolyte, a sodium secondary battery, and an electrical device. The sodium secondary battery electrolyte includes a solvent. A percentage of an amount of substance of a free solvent in relation to a total amount of substance of the solvent in the electrolyte is not greater than 50%. The electrolyte can improve the high-temperature cycle performance of the battery, reduce the high-temperature gassing amount of the battery, and improve the electrochemical performance and safety performance of the battery at high temperature.

POSITIVE ELECTRODE ACTIVE MATERIAL AND PREPARATION METHOD THEREFOR, AND POSITIVE ELECTRODE SHEET, SECONDARY BATTERY AND ELECTRIC DEVICE COMPRISING POSITIVE ELECTRODE ACTIVE MATERIAL

Resumen de: EP4597627A1

This application provides a positive active material. The positive active material is a composite of NaxRy(PO4)z(P2O7)k and C, where 1 ≤ x ≤ 7, 1 ≤ y ≤ 4, 1 ≤ z ≤ 2, 1 ≤ k ≤ 4, and R includes at least one of Mg, Al, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, Sn, Hf, Ta, W, or Pb; and a water content of the positive active material is not higher than 1600 ppm. This application further provides a method for preparing the positive active material, a positive electrode plate containing the material, a secondary battery, and an electrical device. The positive active material of this application contains a relatively low water content, and can effectively alleviate or avoid difficulty of processing of the positive active material, and contribute to a relatively high level of specific charge capacity, specific discharge capacity, and first-cycle Coulombic efficiency of the positive electrode plate and secondary battery containing the material.

ELECTRODE MATERIAL WINDING APPARATUS

Resumen de: EP4597651A1

The present specification relates to an embodiment of an electrode material winding apparatus, in which an electrode material is processed so that an electrode tab is not disposed in an impregnation region into which an electrolyte can be injected, and the electrode material is wound so that the electrode tab is arranged only in a specific region excluding the impregnation region, thereby winding the electrode material such that the electrolyte is injected through the impregnation region.

LITHIUM BATTERY AND ELECTRICAL DEVICE

Resumen de: EP4597676A1

A lithium battery and an electrical device. The lithium battery comprises a positive pole piece, a negative pole piece, and an electrolyte. The negative pole piece comprises a negative current collector and a negative active material layer arranged on the surface of the negative current collector. The negative active material layer comprises a negative active material. The single-sided surface density of the negative electrode active material layer is A mg/cm<2>, the thickness of the negative electrode active material layer is D µm, the specific surface area of the negative electrode active material is S m<2>/g, and the viscosity of the electrolyte at 25±2°C is δ mPa·s. The negative pole piece and the electrolyte satisfy the following relational expression: 1≤(δ×A<2>)/(D×S)≤15.

VEHICLE

Resumen de: EP4596281A1

A vehicle (100). The vehicle (100) comprises a vehicle body (30), a battery (10), and a sealing assembly (20). The sealing assembly (20) is arranged between the vehicle body (30) and the battery (10). The sealing assembly (20) comprises a sealing plate (201) and a sealing member (202). The sealing plate (201) is fixed and hermetically connected to the battery (10), and the surface of the sealing plate (201) distant from the battery (10) has a mounting plane (203). The sealing member (202) is arranged on the mounting plane (203), and the sealing member (202) is sandwiched between the vehicle body (30) and the sealing plate (201), wherein the vehicle body (30) and the battery (10) jointly define a passenger compartment (40), or the vehicle body (30) and the sealing assembly (20) jointly define a passenger compartment (40), so that unreliable sealing between the vehicle body (30) and the battery (10) is prevented, thereby reducing the water seepage problem of the vehicle (100) and improving the product quality of the vehicle (100).

THERMAL MANAGEMENT SYSTEM AND VEHICLE HAVING SAME

Nº publicación: EP4596272A1 06/08/2025

Solicitante:

BYD CO LTD [CN]
BYD Company Limited

Resumen de: EP4596272A1

A thermal management system and a vehicle having same. The thermal management system comprises a compressor, a first heat exchanger and a heat exchange assembly; an air discharge port of the compressor is connected to the heat exchange assembly; a first port of the first heat exchanger is connected to an air inlet of the compressor; a second port of the first heat exchanger is connected to the heat exchange assembly. The heat exchange assembly comprises a first heat exchange plate and a second heat exchange plate which are arranged in parallel, and the first heat exchange plate and the second heat exchange plate are separately used for adjusting the temperature of a battery module.