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LIQUID COOLING STRUCTURE AND BATTERY PACK

Resumen de: EP4648178A1

A liquid cooling structure (100) and a battery pack are disclosed in the present disclosure. The liquid cooling structure (100) includes: a support plate (10), configured to support cells (200); and a vertical plate (20), perpendicular to the support plate (10). The vertical plate (20) includes a main body (21) and a plurality of telescopic ribs (22) provided within the main body (21), a liquid cooling channel (23) configured to circulate a liquid coolant is formed in the main body (21), the plurality of the telescopic ribs (22) are spaced apart in the liquid cooling channel (23), and each of the telescopic ribs (22) is connected between two opposite side walls of the liquid cooling channel (23) to separate the liquid cooling channel (23) into a plurality of sub-channels (231).

BATTERY MODULE, BATTERY PACK, AND ENERGY STORAGE SYSTEM

Resumen de: EP4648207A1

A battery module according to one embodiment of the present disclosure comprises a battery cell stack in which a plurality of battery cells are stacked, a busbar frame formed on one surface or both surfaces of the battery cell stack, and a busbar electrically connected to the electrode lead of the battery cell stack on the outer surface of the busbar frame, wherein the busbar includes a busbar body connected to the electrode lead and a heat-resistant member interposed between the busbar and the busbar frame.

SECONDARY BATTERY AND ELECTRIC DEVICE

Resumen de: EP4648168A1

A secondary battery is provided, including: a positive electrode plate, where the positive electrode plate has a positive electrode active material, the positive electrode active material includes LiaNixCoyMzO2, where 0.2≤a≤1.2, 0.85≤x≤1, 0≤y<0.15, and x+y+z=1, and M includes one or more of Mn and Al; and a coating weight of the positive electrode active material is 19 mg/cm<2> to 45 mg/cm<2>, and a compacted density is 3.2 g/cm<3> to 3.8 g/cm<3>; a negative electrode plate, where the negative electrode plate has a negative electrode active material, where a mass percentage of a silicon-based material in the negative electrode active material is 20% to 100%, a coating weight of the negative electrode active material is 5 mg/cm<2> to 13 mg/cm<2>, and a compacted density is 1.1 g/cm<3> to 1.9 g/cm<3>; and an electrolyte, where an amount of the electrolyte is 0.8 g/Ah to 1.5 g/Ah, the electrolyte includes an electrolytic solution, and an amount of the electrolytic solution outside a bare cell in the secondary battery is less than or equal to 0.1 g/Ah. A corresponding electric apparatus is further provided.

A BATTERY PACK AND A METHOD FOR PREVENTING THERMAL RUNAWAY OF BATTERY CELLS

Resumen de: WO2024147158A1

The present invention relates to a battery pack (10) which includes a casing (20) enclosing a plurality of battery cells, a charge dissipation device (30), an active cooling device (40) and a BMS The BMS monitors the battery pack (10), and if a potential thermal runaway condition exists, the BMS estimates a state of charge (SOC) of the battery pack (10), compares the SOC of the battery pack (10) with a predefined SOC value, actuates the charge dissipation device (30) to rapidly discharge the plurality of battery cells if the SOC of the battery pack (10) is greater than the predefined SOC value, and actuates the active cooling device (40) to decrease the temperature of the battery pack (10) if the SOC of the battery pack (10) is lesser than or equal to the predefined SOC value, for preventing thermal runaway of the plurality of battery cells.

METAL-CARBON COMPOSITES AND USES THEREOF

Resumen de: WO2024147140A1

The present disclosure relates to composite material comprising metal, carbon and optionally heteroatoms and methods of their use in electrochemical reactions.

METHOD OF MANUFACTURING OF MATERIAL FOR GRAPHITIC CARBON COATED GRAPHITE ELECTRODE

Resumen de: WO2024147102A1

The present disclosure provides a method (200) of manufacturing a graphite-based material for an electrode. The method (200) includes the steps of: shaping a block material comprising graphite into a raw material block; coating the raw material block with a second material, wherein the second material comprises carbon; and heating the coated raw material block to enable a graphitization of the coated raw material block to produce a carbon coated graphite-based material. The coated raw material block is heated to a temperature of greater than about 2600 °C in order to remove impurities. Such a process yields a graphite powder with a high purity content, of greater than about 99.95%. The present disclosure further provides an electrode made of the graphite-based material.

A CARBON COATED SILCON-GRAPHITE COMPOSITE ANODE MATERIAL FOR RECHARGEABLE LI-ION BATTERIES AND METHOD OF PREPARATION THEREOF

Resumen de: WO2024147062A1

The present disclosure relates to a carbon coated Silicon-Graphite composite anode material. The present disclosure also relates to a method of preparing a carbon coated Silicon-Graphite composite anode material. The present disclosure also provides a Li-ion coin cell. The carbon coating of Si-Graphite composite binds the Si nano particles on graphite matrix during Lithiation/delithiation reactions, enhancing the electrochemical cycling stability of Si- Graphite anode material, which accomplish the essential criteria of Li-ion battery anode.

LITHIUM-ION CONDUCTIVE MATERIAL, LITHIUM-ION SECONDARY BATTERY, AND METHOD FOR PRODUCING LITHIUM-ION CONDUCTIVE MATERIAL

Resumen de: EP4648163A1

Disclosed is a lithium ion conducting material excellent in lithium ion input/output characteristics. The lithium ion conducting material of the present disclosure comprises a composite of a polymer and an electrolytic solution. The electrolytic solution comprises a cyclic carbonate as a solvent and a lithium amide salt dissolved in the cyclic carbonate. A molar ratio of the lithium amide salt to the cyclic carbonate is greater than 0.25 and 0.33 or less.

BATTERY AND ELECTRICAL DEVICE

Resumen de: EP4648193A1

A battery (100) and a power consuming device (200) are provided. The battery (100) includes: a load-bearing bracket (10) and a plurality of battery modules (20). The plurality of battery modules (20) are mounted to the load-bearing bracket (10). At least one battery module (20) is detachably mounted to the load-bearing bracket (10).

WINDING NEEDLE ASSEMBLY, WINDING APPARATUS, PRODUCTION FACILITY, AND WINDING METHOD FOR ELECTRODE ASSEMBLY

Resumen de: EP4648170A1

The present application provides a winding needle assembly, a winding apparatus, a production device, and a method for winding electrode assemblies, belonging to the technical field of battery production. The winding needle assembly includes a support seat and a winding needle. The winding needle is rotatably connected to the support seat around the axial direction of the winding needle. The winding needle extends out of the support seat along the axial direction of the winding needle, so as to form a plurality of winding parts located outside the support seat on the winding needle, and the winding parts are configured to wind electrode assemblies. The winding needle assembly can wind a plurality of electrode assemblies at the same time, thereby improving the production efficiency. In addition, the winding needle can be supported by the support seat while a plurality of electrode assemblies are wound to shorten the length of a suspended part of the winding needle, so that the rigidity and strength of the winding part of the winding needle can be improved to reduce the phenomenon of deformation of the winding part in the process of winding the electrode assembly, thereby relieving the phenomena of wrinkles, poor alignment degree, limited winding speed and the like of the electrode assembly to improve the production quality and production efficiency of the electrode assembly.

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.

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.

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, 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).

GATE DRIVE CHARGE PUMP CIRCUIT FOR DYNAMIC BIAS CONTROL

Resumen de: CN120359705A

In an example, a system (400) includes a charge pump (142A). The system (400) includes a transistor (108A) coupled to a power supply terminal (134), the transistor (108A) gate coupled to a charge pump (142A) output. The system (400) includes current sense circuitry having a power input, a load input, and a sense output (410), where the power input is coupled to the power terminal (134), the current sense circuitry configured to provide a sense signal at the sense output (410), and the sense signal being representative of a polarity and magnitude of current at the load input. The system (400) includes a controller (148) having a sensing input (412) coupled to the sensing output (410) and a control output (414) coupled to a control input, where the controller (148) is configured to provide a control signal at the control output (414) in response to the sensing signal, and the charge pump (142A) is configured to adjust a voltage at an output of the charge pump (142A) in response to the control signal.

DOPED MANGANESE-RICH CATHODE ACTIVE MATERIALS AND METHODS THEREOF

Resumen de: CN120500462A

Doped manganese-rich cathode active materials and methods of making the same are described. Doping the manganese-rich cathode active material results in improved performance of the energy storage device, including, but not limited to, improved cycle life and capacity retention.

MATERIAL DISPENSING APPARATUS, STIRRING SYSTEM, AND BATTERY PRODUCTION LINE

Resumen de: EP4647153A1

A substance feeding device, a mixing system, and a battery production line are provided, relating to the field of substance conveying technologies. The substance feeding device helps to improve precision of controlling a weight of a conveyed substance. The substance feeding device includes: a buffer member (1), a conveying assembly (2), a weight meter (3), and a control assembly (4). The buffer member (1) is configured to store a substance; one end of the conveying assembly (2) is connected with the buffer member (1); the conveying assembly (2) has at least two conveying ports (21); the conveying port (21) is configured to connect with a target device; the weight meter (3) is connected with the buffer member (1) and is configured to detect a weight of the substance in the buffer member; each conveying port (21) is provided with one control assembly (4); the control assembly (4) is configured to control communication and cutoff of a pipeline between the conveying port (21) and the corresponding target device; the control assembly (4) includes a back pressure valve (41); and the back pressure valve (41) is disposed on the conveying port (21) and capable of being connected with the target device. The provided substance feeding device is configured to feed the substance into the target device.

CTP BATTERY PACK AND ELECTRICAL DEVICE

Resumen de: EP4648179A1

Provided are a CTP battery pack and an electric device. The CTP battery pack includes a housing and multiple battery cell modules. The housing has multiple containment cavities, each containment cavity containing at least one of the battery cell modules. Each battery cell module includes battery cells, a heat spreader, a first connecting member, and a second connecting member. The battery cells are arranged in a first direction, and the first connecting member, the heat spreader and the second connecting member are stacked sequentially between two adjacent ones of the battery cells.

SERVER AND BATTERY ANALYSIS METHOD THEREOF

Nº publicación: EP4647785A1 12/11/2025

Solicitante:

LG ENERGY SOLUTION LTD [KR]
LG Energy Solution, Ltd

Resumen de: EP4647785A1

Provided is a battery analysis method performed on a server, the method comprising the steps of: acquiring electrochemical impedance spectroscopy (EIS) information for each of a plurality of different states of charge, the EIS information being confirmed by performing EIS on a battery cell in the plurality of states of charge; generating distribution of relaxation times (DRT) information for each of the plurality of states of charge by calculating a DRT for the EIS information for each of the plurality of states of charge; and generating, on the basis of the DRT information for each of the plurality of states of charge, a feature image corresponding to the battery cell, the feature image including magnitude information about impedance according to frequency, the magnitude information being calculated for each of the plurality of states of charge.