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

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.

LIQUID INJECTION DEVICE

Resumen de: EP4607157A1

A liquid injection device includes a liquid injection assembly (10), a first driving mechanism (20), and a carrying mechanism (30). The liquid injection assembly (10) includes a liquid injection body (11) and a liquid injection head (12) arranged on the body (11). The first driving mechanism (20) is configured to drive the liquid injection assembly (10) to move. The carrying mechanism (30) is configured to carry a replaceable wiping member (31). The carrying mechanism (30) cooperates with the first driving mechanism (20), so that the liquid injection head (12) comes into contact with a different position on the replaceable wiping member (31), and then the liquid injection head (12) is wiped. In this manner, the probability that the liquid injection head is repeatedly contaminated with the injected liquid is reduced, the cleaning effect is effectively improved, the probability of cross-contamination is reduced, and the battery quality in the production process is ensured.

ELECTRODE ASSEMBLY, BATTERY CELL, BATTERY, AND ELECTRICAL DEVICE

Resumen de: EP4607626A1

This application provides an electrode assembly, a battery cell, a battery, and an electrical device, and relates to the technical field of batteries. The battery cell includes a negative electrode plate and a positive electrode plate. The negative electrode plate includes a porous current collector and a first tab connected to at least one end of the porous current collector. The positive electrode plate includes a body portion and a second tab connected to at least one end of the body portion. The body portion and the porous current collector are stacked along a thickness direction of the porous current collector. Along a first direction, neither end of the porous current collector extends beyond the body portion. The first direction is perpendicular to the thickness direction of the porous current collector. In the electrode assembly of this structure, a restraining force is applied to an edge of the porous current collector in the first direction, so as to induce lithium metal on the porous current collector to deposit uniformly, thereby alleviating a phenomenon of forming dendrites from the lithium metal deposited at the edge of the porous current collector, and in turn, effectively suppressing growth of dendrites of the lithium metal, and reducing the risk of a short circuit in the electrode assembly.

NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

Resumen de: EP4607639A1

Provided is a non-aqueous electrolyte secondary battery provided with: a non-aqueous electrolytic liquid that contains a sulfonylimide compound and a chain carbonate-based solvent and/or a saturated cyclic carbonate-based solvent, and contains at least one selected from the group consisting of a carbonate species, an unsaturated cyclic carbonate-based compound, a compound represented by General Formula (4) of MPO_cF_d, and a phosphorus atom-containing compound represented by General Formula (5) of -P(=O)(OR¹)O-_n; a negative electrode containing a first graphite having a D/G ratio of greater than 0.7 or a full-width at half-maximum of a G-band of greater than 28 cm^-1, and containing a second graphite having a D/G ratio or a full-width at half-maximum of the G-band of the corresponding value or less at an amount of from 0 mass% to 10 mass% per 100 mass% of the total amount of the first graphite and the second graphite; and a positive electrode.

HEAT DISSIPATION APPARATUS, VEHICLE, AND HEAT DISSIPATION CONTROL METHOD

Resumen de: EP4607652A1

A heat dissipation apparatus, a vehicle, and a heat dissipation control method are disclosed. The heat dissipation apparatus includes a housing and an air cooling part. The housing includes a first plate body, an intelligent module close to the first plate body is disposed in the housing, and the air cooling part and the intelligent module are disposed on a same side of the first plate body. The first plate body has a first cavity inside, the first plate body is located in a plurality of liquid cooling loops, and the air cooling part and/or the first plate body are/is configured to dissipate heat for the intelligent module. According to the foregoing solution, the heat dissipation apparatus may dissipate heat for the intelligent module in a liquid cooling heat dissipation mode or a heat dissipation mode combining air cooling and liquid cooling, and has a strong heat dissipation capability. Therefore, a heat dissipation effect on the intelligent module can be enhanced, and a heat dissipation requirement of the intelligent module can be met. In addition, the first plate body may be connected to an appropriate liquid cooling loop to avoid a condensation phenomenon of the intelligent module when the liquid cooling heat dissipation mode is used for the intelligent module, so that a short circuit caused by the condensation phenomenon of the intelligent module can be avoided, and safety of heat dissipation of the intelligent module can be improved.

BATTERY ABNORMALITY DIAGNOSIS APPARATUS, AND OPERATING METHOD THEREFOR

Resumen de: EP4607221A1

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.

LITHIUM-METAL COMPLEX OXIDE, POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY

Resumen de: EP4606774A1

A lithium metal composite oxide contains at least Li and Ni, in which (1) and (2) are satisfied, (1) in a pore size distribution of an adsorption isotherm which is obtained by measuring an adsorption isotherm and a desorption isotherm with a nitrogen gas according to a Barrett-Joyner-Halenda method, a pore volume in a range where a pore size is 2 nm to 10 nm is more than 0.4 × 10^-3 cm³/g and 1.0 × 10^-3 cm³/g, (2) A/D₅₀ is 0.9 × 10^-3 to 3.4 × 10^-3.

A battery cell for a vehicle

Resumen de: GB2638463A

A battery cell (202) for a vehicle, comprises a battery cell housing (104), at least one electrode stack (110) disposed in the battery cell housing (104), and at least one compressible element (204), such as a polyurethane or silicone foam, disposed in the battery cell housing (104). The at least one compressible element (204) being configured to counter any swelling of the battery cell (102). The at least one electrode stack may be disposed in at least one can (122,124), and at least part of the can is electrically conductive. A method of manufacturing a battery cell is also disclosed. Placement of the compressible element (204) within the battery cell (202) negates any requirement to assemble and align compressible elements between battery cells when assembling the battery cells to form a battery.

BATTERY

Resumen de: EP4607643A1

Provided is a battery including a positive electrode layer, a negative electrode layer, and an electrolyte layer disposed between the positive electrode layer and the negative electrode layer, in which the electrolyte layer contains a polymer having an ability to preferentially conduct metal ions, and a thickness ratio between the positive electrode layer and the electrolyte layer is 10:1 to 0.5:1.

BATTERY AND LAMINATE

Resumen de: EP4607642A1

A battery includes a positive electrode, a negative electrode, and an electrolyte layer disposed between the positive electrode and the negative electrode, wherein the electrolyte layer includes a first electrolyte layer and a second electrolyte layer, the first electrolyte layer is disposed between the positive electrode and the second electrolyte layer, the first electrolyte layer contains a material different from a material of the second electrolyte layer, the first electrolyte layer contains a solid electrolyte material containing an alkali metal element, a metal element except alkali metal elements or a metalloid element, and a halogen element, and the metal element except alkali metal elements or the metalloid element includes at least one of Zr and In.

A battery cell arrangement for an electrical storage device

Resumen de: GB2638480A

A battery cell arrangement comprises at least a first battery cell 16 and a second battery cell 18, wherein the first battery cell comprises a first housing, a first electrode (24, figure 2) and a second electrode (26, figure 2), and the second battery cell comprises a second housing, a third electrode (28, figure 2) and a fourth electrode (30, figure 2). A first bus bar 32 contacts the first electrode and the third electrode and a second bus bar 34 contacts the second electrode and the fourth electrode outside of the housings. A first vapour chamber 42 is arranged on the first bus bar 32 and a second vapour chamber 46 is arranged on the second bus bar 34, these chambers being used to improve heat transfer and dissipation from each battery cell. The vapour chambers may be planar heat pipes. The respective vapour chambers may comprise a housing 52 formed of an electrically insulated material and providing airflow ducts (54, figure 4). The respective vapour chambers may each comprise a tapering 56 where the housing connects to the bus bar.

A method of manufacturing an electrode stack of a vehicle battery cell

Resumen de: GB2638483A

A method of manufacturing an electrode stack (402, fig. 5) comprising applying an electrolyte to a plurality of electrodes (208) to form a plurality of wetted electrodes (214), and subsequently forming the plurality of wetted electrodes into an electrode stack (402, fig. 5). The electrolyte may be applied by using a perforated conveyor belt to transport the electrode through a bath of the electrolyte. The electrolyte may alternatively be applied using a roller, brush or via spraying. The wetted electrodes may be formed into a stack by welding together tabs located on the electrodes. Apparatus 204 is also described comprising applicator 312 for applying the electrolyte, an electrode stack assembly apparatus and a battery cell assembly apparatus for assembling the electrodes in a battery cell case to from a battery cell. The battery may be for use in an electric vehicle.

METHOD FOR PREPARING NEGATIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, AND NEGATIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY PREPARED THEREBY

Resumen de: EP4606768A1

The present invention relates to a method of preparing a negative electrode active material for a lithium secondary battery, which includes a first step of forming a silicon dispersion by dispersing silicon-based particles in a solvent; a second step of adding an iron salt and tannic acid to the silicon dispersion and stirring to form a reaction layer of the iron salt and the tannic acid on surfaces of the silicon-based particles; a third step of heat treating the reaction layer of the iron salt and the tannic acid to form an amorphous carbon coating layer; and a fourth step of acid treating the amorphous carbon coating layer to form a porous amorphous carbon coating layer, and a negative electrode active material prepared thereby.

NEGATIVE ELECTRODE MATERIAL, PREPARATION METHOD THEREFOR AND LITHIUM-ION BATTERY

Resumen de: EP4607608A1

The present application provides a negative electrode material, a preparation method therefor and a lithium-ion battery. The negative electrode material includes silicon oxide and a compound of metal M. The compound of metal M includes at least one of an oxide of metal M and a silicate of metal M. The metal M is at least one metal with an electronegativity less than 1.8. An amount of gas produced by the negative electrode material of 10g, which is mixed with a hydrochloric acid of 10 mL and a concentration of 1 mol/L, is less than or equal to 1 mL. The negative electrode material and the preparation method therefor provided by the present application may reduce the volume expansion of the negative electrode material, improve the rate performance and cycling stability of the negative electrode material.

NEGATIVE ACTIVE MATERIAL COMPOSITE FOR RECHARGEABLE LITHIUM BATTERY, METHOD OF PREPARING THE SAME, AND NEGATIVE ELECTRODE AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME

Resumen de: EP4607600A2

A negative active material composite includes a core and a coating layer around (surrounding) the core. The core includes amorphous carbon and silicon nanoparticles, the coating layer includes amorphous carbon, and an adjacent distance between the silicon nanoparticles is less than or equal to about 100 nm.

CRIMPING APPARATUS FOR CYLINDRICAL BATTERY, HAVING POSITION MEASUREMENT PART FOR CRIMP-PRESSING PART

Resumen de: EP4607662A1

Disclosed is a crimping apparatus for cylindrical batteries with a crimping pressing portion position measurement unit, and more particularly a crimping apparatus for cylindrical batteries, the crimping apparatus including an upper body including a crimping pressing portion and a cam on which the upper body is disposed in plural in a circular shape, the cam being configured to rotate together with the upper bodies, wherein the crimping apparatus includes a position measurement sensor configured to measure the height of the crimping pressing portion.

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.

BATTERY CELL, BATTERY AND ELECTRIC DEVICE

Resumen de: EP4607686A1

A battery cell, a battery and an electric device, which belong to the technical field of batteries. The battery cell comprises a casing assembly and a battery cell assembly, wherein the casing assembly comprises a casing and a first electrode post; the casing is provided with a mounting hole, through which the first electrode post passes; the battery cell assembly comprises an active-substance coated portion and an electrically conductive portion; the active-substance coated portion is provided in the casing, the electrically conductive portion is electrically connected to the active-substance coated portion and the first electrode post; the first electrode post comprises a first electrode-post portion and a second electrode-post portion, which are formed in a split manner; at least part of the first electrode-post portion is stopped outside the casing; and at least part of the second electrode-post portion is stopped inside the casing, and the second electrode-post portion is connected to the electrically conductive portion.

SELF-SUPPORTING SEPARATOR FOR ELECTROCHEMICAL DEVICE, AND ELECTROCHEMICAL DEVICE COMPRISING SAME

Resumen de: EP4607682A1

The present disclosure relates to a self-supporting separator for an electrochemical device and an electrochemical device including the same, and relates to a self-supporting separator for an electrochemical device, which includes a negative electrode containing a silicon-based active material, wherein the self-supporting separator for an electrochemical device improves compression resistance, improves energy density, and exhibits high lifespan characteristics by adjusting the surface roughness Sa of the separator by adjusting the content and average particle diameter of the inorganic particles, and an electrochemical device including the same.

BATTERY ASSEMBLING SYSTEM AND CONTROL METHOD THEREFOR, AND BATTERY PRODUCTION LINE

Resumen de: EP4607633A1

This disclosure proposes a battery assembly system, a control method, and a battery production line; and relates to the field of battery technologies. The battery assembly system can reduce the risk of congestion during the return process of trays and facilitate the miniaturization of the battery assembly system. The battery assembly system includes a stacking platform, an assembly apparatus, an assembly circulation line, and a return apparatus. The stacking platform is configured to store trays and battery modules located within the trays; one end of the assembly apparatus is connected to one end of the stacking platform via the assembly circulation line; the assembly apparatus is configured to perform assembly process for to-be-assembled battery modules; the assembly circulation line is configured to transport trays carrying the to-be-assembled battery modules to the assembly apparatus; another end of the assembly apparatus is connected to another end of the stacking platform via the return apparatus; and the return apparatus is configured to transport trays carrying assembled battery modules to the stacking platform.

POSITIVE ELECTRODE MATERIAL, POSITIVE ELECTRODE SHEET, SODIUM ION BATTERY, MANUFACTURING METHOD THEREFOR, AND USE THEREOF

Resumen de: EP4607615A1

The present invention discloses a positive-electrode material, a positive-electrode plate, a sodium-ion battery, manufacturing methods therefor, and uses thereof. The positive-electrode material of the present invention presents an O3 phase and has a chemical formula of NanMn1-x-y-zMxZnyLizO2; where M is at least one of Cu<2+>, Ni<2+>, Cr<2+>, Fe<3+>, and Co<2+>; where, 0.5 ≤ x ≤ 0.6, 0.05 ≤ y ≤ 0.1, 0.005 ≤ z ≤ 0.05, 0.9 ≤ n ≤ 1.1, and x, y, z, and n meet a principle of electroneutrality numerically; and in the NanMn1-x-y-zMxZnyLizO2, all the element Zn is located at a site Wyckoff 3b in a form of Zn<2+>, and all the element Li is located at a site Wyckoff 4c in a form of Li<+>. Mn serves as a basic framework of a core material of the positive-electrode material. An active element M is doped at the side of Mn to provide capacity, and at the same time Li and Zn are distributed in lattices orderly. Moreover, the synergistic doping and coupling effects of non-active elements Li and Zn facilitate the oxidation/reduction reaction of the active element M and inhibit the unfavorable phase transformations during charging and discharging processes, thereby improving the capacity and cyclic stability of the positive-electrode material.

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

Nº publicación: EP4607625A1 27/08/2025

Solicitante:

LASAGNA ONE INC [US]
Lasagna.one Inc

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.