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POSITIVE ELECTRODE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY AND PREPARATION METHOD THEREOF

Resumen de: EP4647402A1

A positive electrode active material includes a lithium composite oxide, and a coating layer on a surface of the lithium composite oxide, and may further include some sodium (Na) and sulfur (S), wherein a mass fraction (S/Na) of the S to the Na is in a range of about 1 to about 3. Also disclosed are methods of preparing the same, a positive electrode including the same, and a rechargeable lithium battery including the positive electrode.

BARE CELL PAIRING METHOD AND SYSTEM

Resumen de: EP4648169A1

Embodiments of this disclosure provide a method and system for pairing bare cells, and pertain to the field of battery technologies. Bare cells are loaded onto a loading zone of each of conveying apparatuses arranged side by side, at least two carrying sections being provided in the loading zone of each conveying apparatus. The bare cells carried by corresponding carrying sections are conveyed to corresponding pairing zones by two conveying apparatuses arranged side by side, where a conveying direction of the conveying apparatuses is arranged to intersect with a direction in which the two conveying apparatuses are arranged side by side, tabs of the bare cells on the two conveying apparatuses are different in arrangement, and two carrying sections are provided in the pairing zone of each conveying apparatus. When the arrangement of qualified bare cells does not meet a pairing requirement for the bare cells, a corresponding qualified bare cell is picked up by a picking apparatus and moved along a preset direction between a buffer station and the carrying sections in a pairing zone of the conveying apparatus, enabling the bare cells in the pairing zone to meet the pairing requirement for the bare cells. Pairing of the bare cells is achieved through movement of the buffer station.

METHOD FOR MANUFACTURING ELECTRODE FOR LITHIUM SECONDARY BATTERY

Resumen de: EP4648126A1

The present invention relates to a method of manufacturing an electrode for a lithium secondary battery, the method including: preparing a transfer laminate including a lithium metal layer and a base material layer; bringing the transfer laminate into contact such that the lithium metal layer comes into contact with at least one surface of an electrode active material layer; and separating the base material layer from the transfer laminate, wherein the separating is performed a predetermined time after the bringing the transfer laminate into contact.

METHOD FOR PRODUCING SOLID SEPARATOR

Resumen de: EP4648205A2

Die Erfindung betrifft ein Verfahren (34) zur Herstellung eines Feststoffseparators (16). Eine Metallfolie (24) wird bereitgestellt, und auf die Metallfolie (24) werden mehrere Edukte (46) zum Ausbilden einer Mischung (50) aufgebracht. Auf die Mischung (50) wird eingewirkt, sodass die Edukte (46) miteinander reagieren und eine keramische Schicht (26) ausgebildet wird. Ferner betrifft die Erfindung ein Verfahren (32) zur Herstellung einer Feststoffbatterie (14) sowie eine Vorrichtung (36) zur Herstellung eines Feststoffseparators (16).

POSITIVE ACTIVE MATERIAL AND APPLICATION THEREOF

Resumen de: EP4648135A1

A positive active material and an application thereof. A peak I and a peak II, either of which have 20 ranging from 17.8° to 19.5°, are present in an X-ray diffraction pattern of the positive active material. The positive active material is special for improving the capacity, energy density and cycling performance of a battery.

METHOD AND APPARATUS FOR ESTIMATING STATE OF CHARGE OF LITHIUM IRON PHOSPHATE BATTERY

Resumen de: EP4647784A1

The present application provides a method and apparatus for estimating a state of charge of a lithium iron phosphate battery. The implementation solution of the method for estimating a state of charge of a lithium iron phosphate battery is: acquiring the temperature of the current time period and an SOC-OCV curve under the current of the current time period; determining, on the basis of the state of charge of the SOC-OCV curve, a correction point of the SOC-OCV curve; and correcting, on the basis of a combination of at least one temperature and at least one current, the SOC-OCV curve at the correction point, and updating the SOC-OCV curve.

POUCH-TYPE BATTERY CELL

Resumen de: EP4648202A1

Provided is a pouch type battery cell, in which an electrode assembly may be accommodated between a first case and a second case. The pouch type battery cell may include: a cup part provided in at least one of the first case or the second case and configured to accommodate the electrode assembly; a folding part in which an edge portion of the first case surrounds an edge portion of the second case so that a discharge passage is provided between the edge portion of the first case and the edge portion of the second case; a sealing part provided on the folding part; a venting part, wherein when an internal pressure within the cup part increases, the cup part and the discharge passage are in communication with each other through the venting part.

IRON PHOSPHATE HAVING LOW SULFUR CONTENT AND HIGH IRON-PHOSPHORUS RATIO, PREPARATION METHOD THEREFOR, AND USE THEREOF

Resumen de: EP4647398A1

This disclosure provides ferric phosphate with low sulfur content and high iron to phosphorus ratio, and a preparation method and an application thereof, belonging to the technical field of battery materials. The preparation method of the ferric phosphate with low sulfur content and high iron to phosphorus ratio includes: providing an amorphous ferric phosphate; adding the amorphous ferric phosphate to water and phosphoric acid for slurrying treatment, and then heating up and aging to obtain an aged slurry; performing slurry washing and filter pressing on the aged slurry to obtain a first filter cake; adding water and a first pH regulator to the first filter cake for slurry washing to obtain a first slurry with a pH value range of 3.0-5.0, and performing filter pressing on the first slurry to obtain a second filter cake; and rinsing, drying and calcining the second filter cake to prepare the ferric phosphate with low sulfur content and high iron to phosphorus ratio. This disclosure is conducive to the preparation of a ferric phosphate with low sulfur content, high iron to phosphorus ratio and large specific surface area. The ferric phosphate can be used to prepare lithium ferric phosphate with better electrochemical performance, and the lithium ferric phosphate can be further used to prepare a cathode sheet and a secondary battery with better electrochemical performance.

Battery systems and methods

Resumen de: GB2640937A

The system 100 comprising a gas displacer 62 arranged to drive the venting of gas that surrounds at least one battery cell 12 in a battery enclosure 30, venting to outside the battery enclosure via an exit vent 34, the gas displacer is selectively activatable to drive the venting. The gas displacer may comprise a compressor/compressed gas 104 providing gas to drive the venting. The gas displacer may be arranged to blow venting gas into the battery enclosure. The gas management system may comprise a pre-cooler arranged to cool venting gas. The system may comprise a filter, to filter venting gas. The venting gas may be air. The gas displacer may drive the venting by sucking gas already in the enclosure out. The system may comprise a monitoring system to check for battery overheating. The battery enclosure may be sealed. A vehicle may comprise the battery system. A further aspect is a method of managing battery enclosure gas using the system. A further aspect is a control system to manage battery enclosure gas comprising one or more processors to receive data from a monitoring system, determine if there is overheating and activate the gas displacer.

Method for determining the physical condition of at least one solid state film and analysis device

Resumen de: GB2640922A

A method for determining the physical condition of a solid-state electrolyte film 12 of a battery by an analysis device 1, comprising; applying an excitation source 20,26, 20,28 with at least one predefined frequency to the electrolyte film 12, wherein the film is vibrated with an acoustic or vibrational signal S from the excitation source 26, 28 so that a membrane of the film responds at a resonance frequency of the excitation source; and detecting the vibrations generated in the film, using camera 24 or microphone 30 and transmitting data of the detected vibrations to an electronic computing device 10 for analysis. A light source 22 may be included. The invention also relates to such an analysis device 1.

BATTERY, THERMAL RUNAWAY EARLY WARNING METHOD THEREFOR, THERMAL RUNAWAY EARLY WARNING APPARATUS THEREOF, AND STORAGE MEDIUM

Resumen de: EP4648176A1

The present application relates to the field of batteries, and provides a battery, a thermal runaway early-warning method and apparatus therefor, and a storage medium. The battery is provided with an accommodating space, the accommodating space is configured to discharge smoke in the event of thermal runaway of a battery cell of the battery, and the method includes: acquiring a detection signal at a detection position including the accommodating space; and generating a thermal runaway early-warning signal according to the detection signal. By arranging a sensor for acquiring the detection signal at the accommodating space, when the battery discharges smoke through the accommodating space, the temperature or air pressure at an interlayer may increase. Therefore, the sensor arranged at the accommodating space can accurately and effectively detect a change signal of the temperature or air pressure of the battery, thereby generating the thermal runaway early-warning signal timely, leaving longer processing time for a user, and reducing the losses caused by thermal runaway of the battery.

PREPARATION METHODS OF THERMALLY COMPOSITED LAMINATED CELLS AND THERMALLY COMPOSITED LAMINATED CELLS

Resumen de: EP4648149A1

A preparation method of a thermally composited laminated cell and a thermally composited laminated cell (50) are provided. The preparation method includes: preparing a plurality of first electrode plate groups (10) and a plurality of second electrode plate groups (20), each first electrode plate group (10) includes a plurality of first units (100), each second electrode plate group (20) includes a plurality of second units (200). Each of two outermost sides of the first unit (100) is provided with a negative electrode plate (110), and each of two outermost sides of the second unit (200) is provided with a positive electrode plate (130). Providing a first separator (300), and assembling the first electrode plate groups (10), the second electrode plate groups (20) and the first separator (300) to prepare a composite cell group (30). Cutting the composite cell group (30) to prepare a plurality of thermally composited laminated cells (50).

THERMAL COMPOSITE LAMINATED CELL AND BATTERY

Resumen de: EP4648148A1

A thermal composite laminated cell and a battery cell are disclosed by this application. The thermal composite laminated battery cell includes a first cell unit (100), a second cell unit (200) and a continuous separator (300), wherein the outermost sides of the first cell unit (100) are negative electrode sheets (110), and the outermost sides of the second cell unit (200) are positive electrode sheets (130). The continuous separator (300) includes a plurality of main body portions (310) and a plurality of bent portions (320) all alternately and continuously disposed, the first cell units (100) and the second cell units (200) are alternately disposed in a thickness direction, and the adjacent first cell unit (100) and the second cell unit (200) are separated by the main body portion (310).

Processes for the Preparation of Silicon-Containing Composite Particles

Resumen de: GB2640900A

A process for preparing composite particles comprising the steps of providing a charge of porous particles in a reaction zone, continuously introducing a gaseous feed stream comprising a silicon precursor gas into the reaction zone while maintaining conditions of temperature and pressure that are effective to cause deposition of silicon into the pores of the porous particles, a deposition phase during which the flow rate of the silicon precursor gas into the reaction zone is more than 2.0 × 10-6 grams of silicon per square metre of surface area per minute based on the total BET surface area of the charge of porous particles, and either or both of an initiation phase prior to deposition or a termination phase after deposition during which the flow rate of the silicon precursor gas into the reaction zone is less than 2.0 × 10-6 grams of silicon per square metre of surface area per minute. The particles may be used as anode active materials in rechargeable lithium-ion batteries.

BATTERY ELECTRODE SHEET AND MANUFACTURING METHOD THEREFOR, BATTERY, AND ELECTRICAL APPARATUS

Resumen de: EP4648118A1

The present application relates to a battery electrode sheet and a manufacturing method therefor, a battery, and an electrical apparatus. The battery electrode sheet comprises a current collector and an active layer provided on the surface of the current collector; the component of the active layer comprises an active material; and the volume average particle size of the active material is D, the surface roughness Ra of the current collector is greater than or equal to 0.5 µm, and the following relation is satisfied: Ra/D ≥ 0.15.

BATTERY PACK

Resumen de: EP4648177A1

Provided is a battery pack including at least two layers of battery modules (1) and a liquid cooling assembly (2). A liquid cooling assembly (2) includes a first plate (21), a second plate (22), and a third plate (23), wherein the second plate (22) is located between the first plate (21) and the third plate (23), a first cooling flow channel (24) is formed between the first plate (21) and the second plate (22), a second cooling flow channel (25) is formed between the second plate (22) and the third plate (23), and communication or discommunication between the first cooling flow channel (24) and the second cooling flow channel (25) is formed between the second plate (22) and the third plate (23).

LITHIUM SECONDARY BATTERY

Resumen de: EP4648167A1

A lithium secondary battery includes a positive electrode; a negative electrode; a separator interposed between the positive electrode and the negative electrode; and a non-aqueous electrolyte. The positive electrode includes a positive electrode active material, the positive electrode material includes a perlithium manganese-rich oxide containing 50 mol% or more of Mn based on all metal elements excluding lithium, and having a molar ratio of lithium to transition metal exceeding 1, the non-aqueous electrolyte includes a lithium salt, an organic solvent, and an additive, the organic solvent includes a first organic solvent and a second organic solvent, the first organic solvent includes ethylene carbonate, the second organic solvent includes diethyl carbonate and ethyl methyl carbonate, and the additive includes cyclic sulfur oxide represented by a specific chemical formula.

CUTTING APPARATUS USING LASER

Resumen de: EP4647205A1

A laser cutting apparatus according to an embodiment of the present disclosure is an apparatus which cuts a material for secondary battery with a laser, the apparatus comprising: a first laser light source that emits a first laser for cutting the material for secondary battery material; and a second laser light source that emits a second laser for heating a portion where the material is cut, wherein the first laser and the second laser are synchronized and irradiated onto the material in a state where optical paths are combined into one.

TEMPERATURE CONTROL SYSTEM

Resumen de: EP4647689A1

A temperature control system includes a mechanism configured to circulate air between a freezing refrigeration chamber (3a) in a moving body (1) and a battery mounting space (50a) in which a battery (B) is mounted. The mechanism includes a circulation passage (60) configured to send air in the freezing refrigeration chamber (3a) to the freezing refrigeration chamber (3a) after the battery mounting space (50a).

BATTERY MODULE AND BATTERY PACK COMPRISING SAME

Resumen de: EP4648188A1

The present disclosure relates to a battery module and a battery pack comprising the same, and more particularly, to a battery module that may be applied to types of vehicles that need batteries capable of bottom venting and top cooling and a battery pack comprising the same.The battery module according to the present disclosure includes a battery cell assembly formed by stacking a plurality of battery cells, a heat dissipation layer disposed on a top side of the battery cell assembly and a busbar frame covering a first side where a lead of the battery cell assembly protrudes and a bottom side of the battery cell assembly.

INTER-MODULE BUSBAR

Resumen de: EP4648208A1

The present invention relates to an inter-module busbar, and particularly, the present invention provides a secondary battery including: a conductive unit that electrically connects a plurality of objects to each other; a first insulation layer that surrounds the conductive unit; and a second insulation layer that surrounds the first insulation layer, wherein a discharge line, which communicates with the outside and is provided to discharge a gas, is defined in the first insulation layer.

BATTERY CELL, BATTERY, AND ELECTRICAL DEVICE

Resumen de: EP4648187A1

This application provides a cell, a battery, and an electric device, and relates to the field of batteries. The cell includes a can and a guard. The can includes a case and an end lid. The case has an opening. The end lid is connected to the case and closes the opening. The end lid is connected to the case to form a connecting portion. The guard is arranged on an outer surface of the can and covers at least a part of the connecting portion. The cell has the guard arranged thereon, where the guard covers at least a part of the connecting portion. The guard can prevent liquid from leaking from the connecting portion to some extent, and lower a liquid leakage speed, thereby improving safety of the cell to some extent.

PREDICTION OF THERMAL RUNAWAY IN BATTERIES

Resumen de: EP4648171A1

A computer system is disclosed for training a model to predict a thermal runaway event in a battery cell, the computer system comprising processing circuitry configured to acquire data regarding one or more operating states associated with thermal runaway of a battery cell, and train a model to predict a thermal runaway event based on the acquired data using a cross-entropy cost function. A computer system for predicting a thermal runaway event in a battery cell using a trained model is also disclosed.

BATTERY CELL, VEHICLE AND METHOD FOR MANUFACTURING A BATTERY CELL

Resumen de: EP4648185A1

The disclosure relates to a battery cell (10) comprising a housing (20) having an inner wall (21), a first battery terminal (30) and a second battery terminal (40), the battery cell (10) further comprising an electrode assembly (11) with a first electrode (13) having a first current collector (14) being electrically connected to the first battery terminal (30) and a second electrode (15) having a second current collector (16) being electrically connected to the second battery terminal (40), the battery cell (10) comprising an isolating material (51) electrically isolating the first current collector (14) from the inner wall (21), the isolating material (51) being applied at least to a portion of the inner wall (21).

BATTERY CELL FOR A VEHICLE

Nº publicación: EP4648184A1 12/11/2025

Solicitante:

VOLVO CAR CORP [SE]
Volvo Car Corporation

Resumen de: EP4648184A1

The disclosure relates to a battery cell (10) comprising a housing (20) having an inner wall (21), a first battery terminal (30) and a second battery terminal (40), the battery cell (10) further comprising an electrode assembly (11) with a first electrode (13) having a first current collector (14) being electrically connected to the first terminal (30) and a second electrode (15) having a second current collector (16) being electrically connected to the second terminal (40), the second current collector (16) being configured with a variable height along an extension axis (h) of the housing (20), the variable height varying based on a temperature of the electrode assembly (11), and the second current collector (16) being able to slide along the extension axis (h) the relative to the housing (20).