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BATTERY CELL, BATTERY, AND ELECTRIC APPARATUS

Resumen de: EP4597678A1

Disclosed in the present application are a battery cell, a battery, and an electric apparatus. The battery cell comprises: a housing, comprising a housing cover and a housing body; a battery cell assembly, comprising an active substance-coated part; and a support arranged at the end of the active substance-coated part distal to the opening of the housing body and fitting the battery cell assembly. The support is provided with a body part and an extension part arranged circumferentially on the body part. The projection of the body part on the plane of the housing cover is within the projection of the active substance-coated part on the plane of the housing cover, and the projection of the extension part on the plane of the housing cover is located outside the projection of the active substance-coated part on the plane of the housing cover. The embodiments of the present application can reduce the probability that the active substance-coated part touches the housing and that the housing scratches the active substance-coated part.

BATTERY CELL, BATTERY, AND ELECTRICAL DEVICE

Resumen de: EP4597677A1

The present application discloses a battery cell, a battery, and an electrical device. The battery cell comprises a housing assembly and a core assembly; the housing assembly comprises a housing and a first pole, the housing has a first wall provided with a mounting hole, the first pole is provided in the mounting hole, and the first pole comprises a first soldering surface; the core assembly comprises an active material coating portion and a conductive portion electrically connected to the active material coating portion, the active material coating portion is accommodated in the housing, the conductive portion comprises a second soldering surface in contact with the first soldering surface, and a portion of the second soldering surface is soldered to a portion of the first soldering surface by means of a soldering portion; a plane where the cross section of the mounting hole is located is taken as a projection plane, and in a direction perpendicular to the projection plane, the outer contour of the projection of the second soldering surface on the projection plane is located within a range of the outer contour of the projection of the first soldering surface on the projection plane. According to the battery cell of the present application, the fast charging performance, reliability and stability of the battery cell are improved.

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

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.

ELECTRODE FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Resumen de: EP4597683A1

The present disclosure relates to an electrode for a lithium secondary battery which not only effectively suppresses heat generation or ignition and thus has further improved stability, but also enables provision of batteries exhibiting excellent electrochemical characteristics, and a lithium secondary battery comprising the same.

BATTERY ABNORMALITY DIAGNOSIS DEVICE AND OPERATION METHOD THEREOF

Resumen de: EP4597137A1

A battery abnormality diagnosis apparatus according to an embodiment disclosed herein includes an obtaining unit configured to obtain voltage-state-of-charge (SOC) profiles of a plurality of battery units, an identifying unit configured to identify a designated first number of ranks of each of the plurality of battery units, based on the voltage-SOC profiles, and a diagnosing unit configured to diagnose abnormality of the plurality of battery units, based on changes of the ranks.

BATTERY CELL, BATTERY, AND ELECTRICAL DEVICE

Resumen de: EP4597729A1

The present application discloses a battery cell, a battery, and an electrical device. The battery cell comprises: a housing, a core assembly; a support, provided at one end of the core assembly; and an insulating member, matching the support and wrapping the core assembly. The core assembly, the support, and the insulating member are all provided in the housing, and at least a portion of the insulating member is connected to the wall surface of the support distant from the core assembly. In the technical solution of the embodiments of the present application, the reliability of connection between the insulating member and the support can be improved, the risk of falling of the insulating member can be reduced, the risk of corrosion of the housing caused by exposure of the core assembly can be reduced, the risk of failure of the core assembly can be reduced, the risk of electrolyte leakage can be reduced, and then the reliability and stability of the battery cell can be improved.

SILICON COMPOSITE ANODE MATERIALS FOR ENERGY STORAGE DEVICES, AND METHODS THEREOF

Resumen de: MX2025003012A

Methods for forming dry composite material for an energy storage device electrode are provided. The method may comprise forming a slurry by mixing a solvent, a silicon active material, a carbon active material, and a carbon additive; and forming the dry composite material comprising the silicon active material, the carbon active material, and the carbon additive by removing the solvent. The carbon additive, silicon active material and carbon active material are substantially homogeneously dispersed in the dry composite material. The dry composite material may be used to form a dry electrode film in dry fabrication processes.

SILICON-BASED NEGATIVE ELECTRODE ACTIVE MATERIAL AND PREPARATION METHOD THEREFOR, SECONDARY BATTERY, AND ELECTRIC DEVICE

Resumen de: EP4597628A1

A silicon-based negative electrode active material, comprising M2Si2O5 and M2SiO3, wherein M comprises one or more alkali metal elements; in an XRD pattern of the silicon-based negative electrode active material, a diffraction angle 2θ has a first diffraction peak in the range of 24°-25°, and the half-peak width of the first diffraction peak is βA; the diffraction angle 2θ has a second diffraction peak in the range of 26°-27°, and the half-peak width of the second diffraction peak is βB; and the silicon-based negative electrode active material meets the equation: 1.0 ≤ β A/ β B ≤ 2.5.

BATTERY SELF-HEATING CIRCUIT, AND VEHICLE

Resumen de: EP4597690A1

A battery self-heating circuit, comprising a first battery group, a second battery group, a first capacitor, a second capacitor, multiple phases of bridge arms, and multiple phase of windings, which correspond to the multiple phases of bridge arms on a one-to-one basis, wherein each phase of winding is connected to the midpoint of a corresponding bridge arm; a negative electrode of the first battery group is connected to a positive electrode of the second battery group, and the negative electrode of the first battery group and the positive electrode of the second battery group are connected to a neutral point of the multiple phases of windings; a positive electrode of the first battery group is connected to a first bus terminal of the multiple phases of bridge arms, and a negative electrode of the second battery group is connected to a second bus terminal of the multiple phases of bridge arms; and a first end of the second capacitor is connected to a second end of the first capacitor, the first end of the second capacitor and the second end of the first capacitor are connected to the neutral point of the multiple phases of windings, a second end of the second capacitor is connected to the negative electrode of the second battery group, and a first end of the first capacitor is connected to the positive electrode of the first battery group.

LITHIUM-ION BATTERY AND ELECTROCHEMICAL DEVICE COMPRISING SAME

Resumen de: EP4597667A1

A lithium-ion battery includes an electrolytic solution and a negative electrode plate. The electrolytic solution includes vinylene carbonate and fluoroethylene carbonate. The negative electrode plate includes a negative active material. An OI value of the negative active material is a. Based on a weight of the electrolytic solution, a weight percent of the vinylene carbonate is b%, and a weight percent of the fluoroethylene carbonate is c%; and a, b, and c satisfy: 0.3 ≤ a/(b + c) ≤ 6; 0.02 ≤ b + c ≤ 10; and 0.1 < b/c < 3.

NEGATIVE ELECTRODE ACTIVE MATERIAL, NEGATIVE ELECTRODE SHEET COMPRISING SAME, ELECTROCHEMICAL DEVICE AND ELECTRIC DEVICE

Resumen de: EP4597630A1

This application provides a negative active material, a negative electrode plate containing same, an electrochemical device, and an electrical device. The negative active material includes a hard carbon material. The hard carbon material includes a plurality of micropores and an average delithiation potential vs Li/Li⁺ of the hard carbon material is 0.15 V to 0.40 V using metallic lithium as a counter electrode.

CELL BATTERY, BATTERY PACK, AND ELECTRICAL DEVICE

Resumen de: EP4597693A1

Provided are a cell battery (100), a battery pack, and an electricity-consumption device. The cell battery includes: a housing (10); a first end cover (100a) provided at an end of the housing (10), the first end cover (100a) including a first base cover (1a) and a first explosion-proof valve (20) mounted at the first base cover (1a); and a second end cover (100b) provided at the other end of the housing (10), the second end cover (100b) including a second base cover (1b) and a second explosion-proof valve (30) mounted at the second base cover (1b).

AUTOMATIC ELECTRODE PLATE READING APPARATUS FOR SECONDARY BATTERIES

Resumen de: EP4597617A1

Disclosed is an automatic electrode plate reading apparatus for secondary batteries which, when an arm descends, vacuum-adsorbs and grips a barcode part of a standby electrode plate, and then rises in the state in which an EPC sensor and a replacement preparation core move backwards, a first roller moves to the right, a third roller descends and second rollers rise, automatically connects the electrode plate vacuum-adsorbed and gripped by the arm to the replacement preparation core so as to be kept taut in the state in which the first roller moves to the left, the second rollers descend, the third roller rises and the EPC sensor and the replacement preparation core move forwards. The automatic electrode plate reading apparatus includes for secondary batteries includes a standby electrode plate (1) prepared in a roll form to replace an electrode plate around a core and rotatably installed, an EPC sensor (2), a first roller (3) configured to move left when an arm (8) descends, and to move right to push the standby electrode plate (1) when the arm (8) rises, second rollers (4) rotatably installed to place the standby electrode plate (1) at a regular position, and a third roller (6) installed below the second rollers (4) and configured to descend before the arm (8) descends and to rise so as to keep the standby electrode plate (1) taut after the arm (8) rises, and, in the state in which the arm (8) descends by an arm drive motor (11), detects a barcode on the standby electrode pl

ADHESIVE TAPE ATTACHING MECHANISM, ADHESIVE TAPE ATTACHING DEVICE, AND BATTERY PRODUCTION LINE

Resumen de: EP4596477A1

This application relates to an adhesive tape application mechanism (100), an adhesive tape application apparatus (1000), and a battery production line. The adhesive tape application mechanism (100) includes: an assembly base (10); a central adhesive tape suction assembly (20) capable of adsorbing and applying an adhesive tape (3000) to a first surface (2100) of a workpiece to be adhered; end adhesive tape suction assemblies (30) arranged on two opposite sides of the central adhesive tape suction assembly (20), where each of the end adhesive tape suction assemblies (30) includes an end driving member (31) and an end adhesive tape suction member (32) in transmission connection with the end driving member (31); and an end sliding assembly (40), disposed on the assembly base (10), where each of the end adhesive tape suction members (32) is configured to be driven by the end driving member (31) connected thereto, guided by the end sliding assembly (40) to slide toward the central adhesive tape suction assembly (20) for closing, and is capable of adsorbing, bending, and applying the adhesive tape (3000) to a second surface (2200) and a third surface (2300) of the workpiece to be adhered, respectively. The adhesive tape application mechanism (100), the adhesive tape application apparatus (1000), and the battery production line provided by this application can alleviate the problem caused by unstable pressing force resulting from elastic deformation, thereby enhancing the reliability

BATTERY PACK AND ELECTRIC DEVICE

Resumen de: EP4597728A1

This application provides a battery pack (100) and an electric device having the battery pack (100). The battery pack (100) includes a cell assembly (10) and a connecting member (20). The cell assembly (10) includes M cells (11) stacked along a first direction (X). Each cell (11) includes a cell housing (111), an electrode terminal (113), and an electrode assembly (112) disposed within the cell housing (111). The connecting member (20) includes N conductive sheets (23) spaced apart. The electrode terminal (113) is connected to the conductive sheet (23). Electrode terminals (113) of adjacent cells (11) are arranged in a non-overlapping manner in the first direction (X), reducing the risk of short circuits between adjacent electrode terminals (113). The electrode terminal (113) is connected to the electrode assembly (112) and extends out from the cell housing (111). Along the first direction (X), a projection of a portion, located outside the cell housing (111), of an electrode terminal (113) of any one of the cells (11) is separated from a projection of a portion, located outside the cell housing (111), of an electrode terminal (113) of an adjacent cell (11) in a second direction (Y). The second direction (Y) is perpendicular to the first direction (X), which is conducive to the connection of the electrode terminals (113) to other conductive members.

ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE

Resumen de: EP4597673A1

An electrochemical device of this application includes a positive electrode, a negative electrode, and an electrolyte, where the positive electrode includes a positive electrode active material, the positive electrode active material includes element A, and element A is selected from at least one of La, Y, or Nb; based on a mass of the positive electrode active material, a mass percentage of element A is x%; the electrolyte includes a compound represented by formula (I); and based on a mass of the electrolyte, a mass percentage of the compound represented by formula (I) is a%.

SAGGAR FOR RECYCLING WASTE BATTERY

Resumen de: EP4597686A1

The present invention provides a saggar for an apparatus for recycling of waste secondary batteries, the saggar including a storage part input together with objects into the apparatus including a work part, wherein the storage part includes a body part and a mesh part coming into contact with the objects inside the body part, and a predetermined mixed gas input into the work part enters the storage part. According to the present invention, heat treatment efficiency can be maximized by making it easy to input a gas for heat treatment of waste secondary batteries, mass heat treatment of waste secondary batteries is possible, and multiple types of waste secondary batteries can be treated at once.

SYSTEM AND METHOD FOR MANUFACTURING AN ELECTROD ASSEMBLY FOR A BATTERY

Resumen de: EP4597594A1

A system and a method for manufacturing an electrode assembly for a battery are provided. The system includes a first cutter configured to cut a first patterned electrode sheet to form a first electrode cut portion having a first length, a first sensor arrangement configured to generate a first cutting operation code and to acquire first position data reflecting positions on the first electrode sheet, a second cutter configured to cut a second patterned electrode sheet to form a second electrode cut portion having a second length, a second sensor arrangement configured to generate a second cutting operation code and to acquire second position data, a combinator configured to manufacture an electrode assembly by combining the first electrode cut portion and the second electrode cut portion with a separator interposed therebetween, and an identification information assigning device configured to assign identification information to the manufactured electrode assembly and associate the identification information with the first cutting operation code and the first position data, and with the second cutting operation code and the second position data.

POSITIVE ELECTRODE CURRENT COLLECTOR FOR LITHIUM SECONDARY BATTERY, PREPARATION METHOD THEREFOR, AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Resumen de: EP4597641A1

A cathode current collector for a lithium secondary battery according to embodiments of the present disclosure may include an aluminum layer, aluminum-copper alloy layers formed on the aluminum layer, and copper layers formed on the aluminum-copper alloy layer. Accordingly, even when a high-density cathode active material layer is formed on the cathode current collector, deformation or fracture of the cathode current collector may be prevented, thereby improving the cycle life of the secondary battery.

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.

ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE

Resumen de: EP4597672A1

An electrochemical device and an electronic device are provided. The electrochemical device includes a negative electrode, a positive electrode, a separator, and an electrolyte. The positive electrode includes a positive electrode active material containing a doping element, where the doping element includes one or more selected from the group consisting of aluminum, magnesium, zirconium, titanium, and lanthanum; and based on a mass of the positive electrode active material, a mass percentage of the doping element is b%, where 0.01≤b≤3 . The electrolyte includes a polynitrile additive. The positive electrode active material of this application includes the doping element in the mass percentage of 0.01 mass% to 3 mass%. The doping element can improve the structural stability and thermal stability of the positive electrode active material after delithiation. The polynitrile additive of the electrolyte can form an interfacial protection film on a surface of the positive electrode active material, reducing the risk of side reactions at an interface of the positive electrode active material, thereby reducing the heat generated at the interface, further improving the thermal stability of the positive electrode active material, and improving the cycling performance of the electrochemical device at high temperatures.

RECYCLING OF ELECTRONIC WASTE TO RECOVER LITHIUM

Resumen de: AU2023350690A1

Disclosed herein is a method for recovering metals from electronic waste or a leach residue thereof, the electronic waste or leach residue comprising elemental copper and one or more lithium compounds, the method comprising: leaching the electronic waste or leach residue with a leach solution comprising ammonium sulphate in the presence of an oxidant to provide a leachate comprising Cu ions and Li ions and a solid residue; and separating the leachate and the solid residue.

Electrode precursor composition

Nº publicación: GB2637780A 06/08/2025

Solicitante:

DYSON TECHNOLOGY LTD [GB]
Dyson Technology Limited

Resumen de: GB2637780A

An electrode for an alkali metal ion secondary cell and its precursor composition with a polymer-electrolyte gel matrix phase, a dispersed phase comprising an electrochemically active material, and a conductive additive with a tubular carbon material as a majority component, preferably MWCNTs (multi-walled carbon nanotubes). The electrochemically active material may be a lithium transition metal oxide, preferably NMC. The electrode may be produced by processing the composition as a film or coating by thermal processing or extrusion. A method of manufacture and storage device are also described. The use of gel electrodes avoids the use of energetically expensive sacrificial solvents, and the use of tubular carbon improves electrochemical performance reducing the tortuosity values.