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CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERIES HAVING A MULTIPHASE STRUCTURE AND A MANUFACTURING METHOD THEREOF

Resumen de: US2025140824A1

A cathode active material for lithium secondary batteries having a multiphase structure and a manufacturing method thereof are disclosed. The cathode active material includes a lithium oxide according to the chemical formula Li1+xMn2O4 and having a multiphase structure including at least a cation-disordered rock salt (DRX) structure. In the formula, x satisfies the relationship 0≤x≤0.75.

METHOD FOR THE PREPARATION OF PRE-LITHIATED LIMN2O4

Resumen de: US2025140829A1

A process of preparing a Li1+xMn2O4 product (wherein. 0

CURRENT COLLECTING COMPONENT, THERMAL MANAGEMENT ASSEMBLY, BATTERY, AND ELECTRIC DEVICE

Resumen de: WO2025087034A1

A current collecting component (3), a thermal management assembly (30), a battery (100), and an electric device. The current collecting component (3) comprises a device body (31); the device body (31) is provided with a main inlet (311), a main outlet (312), a plurality of sub-inlets (313), and a plurality of sub-outlets (314); the plurality of sub-outlets (314) are communicated with the main outlet (312); an extension flow channel (315) is formed inside the device body (31); one end of the extension flow channel (315) is communicated with the main inlet (311), and the other end of the extension flow channel (315) extends away from the main inlet (311); one of the plurality of sub-inlets (313) is communicated with the main inlet (311), and the remaining sub-inlets (313) are communicated with the extension flow channel (315); the quantity of the sub-inlets (313) is equal to that of the sub-outlets (314), and the sub-inlets (313) are in one-to-one correspondence to the sub-outlets (314); and the sub-inlets (313) are respectively adjacent to the corresponding sub-outlets (314).

ELECTROLYTE, BATTERY, AND ELECTRIC DEVICE

Resumen de: WO2025087000A1

Provided are an electrolyte, a battery, and an electric device. The electrolyte comprises a redox couple, the redox couple only has one oxidation potential, and the oxidation potential of the redox couple is 3.4-4.2 V.

BATTERY PACK

Resumen de: WO2025086994A1

A battery pack, comprising a battery module (20) and a heat exchange member (10). The battery module (20) comprises at least one row of battery groups; the heat exchange member (10) comprises a heat exchange main body (100), and a plurality of protective protrusions (130) which are spaced apart from one another and are all connected to the heat exchange main body (100); the heat exchange member (10) is attached to one surface of the battery module (20); and all the protective protrusions (130) extend away from the battery module (20). The structural form of the protective protrusions (130) achieves a relatively light weight and relatively low costs, so that the energy consumption of an electric vehicle is relatively low, and the endurance of the electric vehicle is ensured.

SINGLE-CRYSTAL POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR, AND LITHIUM ION BATTERY

Resumen de: WO2025087414A1

A single-crystal positive electrode material and a preparation method therefor, and a lithium ion battery. The single-crystal positive electrode material is a particulate matter, and the particulate matter comprises an inner-layer material and a cladding layer covering the surface of the inner-layer material, wherein the particulate matter comprises a first particle having an average particle size F1 of 1.0-2.0 μm and a second particle having an average particle size F2 of 2.5-6.0 μm, and the average thickness T1 of a cladding layer of the first particle is smaller than the average thickness T2 of a cladding layer of the second particle; the cladding layer comprises a fast ion conductor; the molecular formula of the inner-layer material is: Li1+aNixCoyMzQbO2±cAd, wherein 0≤a<0.20, 0.60≤x<1.0, 0

PREPARATION METHOD FOR LITHIUM METAL ELECTRODE

Resumen de: WO2025086390A1

Disclosed is a preparation method for a lithium metal electrode. The preparation method comprises the following steps: step S1, preliminary work; step S2, forming an alloy liquid; step S3, coating the alloy liquid; and step S4, monitoring and feeding back the coating result. The lithium metal electrode is formed by coating the alloy liquid containing lithium metal on a conductive substrate, and the thickness of the lithium metal electrode can be adjusted by adjusting the coating thickness of the alloy liquid, so as to improve the simplicity of the thickness adjustment of the lithium metal electrode, and the consistency of the coating thickness of the alloy liquid is convenient to control; in addition, the lithium metal and an auxiliary metal are mixed to form the alloy liquid, such that the affinity with the conductive substrate can be enhanced, thereby improving the stability of connection between the alloy liquid and the conductive substrate, and by monitoring the actual coating thickness of the alloy liquid, and adjusting the coating speed according to the coating thickness, the technical effect of improving the coating thickness accuracy can be achieved.

MODIFIED LITHIUM IRON PHOSPHATE, PREPARATION METHOD THEREFOR AND USE THEREOF

Resumen de: WO2025086213A1

A modified lithium iron phosphate, a preparation method therefor and a use thereof. The preparation method comprises the following steps: (1) mixing a zirconium salt, a tungstate and a solvent, to obtain a mixed salt solution, adjusting the pH, then adding lithium iron phosphate and performing a heating reaction; (2) separating a slurry obtained by the heating reaction into a solid and a liquid, and subjecting the obtained solid to a one-step sintering treatment, to obtain a first sintered material; (3) mixing an organic carbon source, a lithium source and the first sintered material, and performing a second sintering treatment, to obtain a modified lithium iron phosphate. A material having a negative thermal expansion effect is used as a coating layer, which is then coated with an electrically conductive material, causing pores to appear during a second coating process due to the negative thermal expansion effect, which is conducive to the embedding of organic matter and improves bonding tightness between the two layers of coatings. The pores generated during the negative thermal expansion process are conducive to the entry of lithium ions, which can better generate lithium tungstate and lithium zirconate from the tungsten oxide and zirconium oxide generated by decomposition.

METHOD FOR PREPARING LITHIUM METAL ELECTRODE

Resumen de: WO2025086389A1

A method for preparing a lithium metal electrode, comprising: step S1, preparing molten lithium; step S2, adding auxiliary metal to the molten lithium, and mixing and stirring to form an alloy liquid; step S3, cooling the alloy liquid to a target temperature, and heating a conductive substrate to a preset temperature, such that the temperature difference between the target temperature and the preset temperature is within a preset range; and step S4, coating the conductive substrate with the alloy liquid to obtain a lithium metal electrode. The lithium metal electrode is formed by coating the conductive substrate with the alloy liquid containing lithium metal, and the thickness of the lithium metal electrode can be adjusted by adjusting the coating thickness of the alloy liquid, thereby improving the flexibility and convenience of thickness adjustment of a lithium battery. Additionally, the lithium metal and the auxiliary metal are mixed to form the alloy liquid, so that the affinity with the conductive substrate can be enhanced, and thus the technical effect of improving the stability of connection between the alloy liquid and the conductive substrate is achieved.

Notching System for Electrode Sheet

Resumen de: US2025135677A1

A notching system for an electrode sheet coated with slurry on a surface of a collector includes: an electrode unwinder from which the electrode sheet is unwound; a film unwinder from which a protective film stacked on the electrode sheet is unwound; a notching device configured to notch a non-coating portion, which is a portion that is not coated with the slurry on the electrode sheet, when provided in the state in which the protective film is stacked on the electrode sheet; and a rewinder configured to wind the notched electrode sheet.Accordingly, the problem such as the cutting and tearing of the electrode sheet and the problem of causing the scratches due to the separation of the graphite powder from the surface of the electrode sheet may be solved.

SYSTEM AND METHOD FOR DETECTING A THERMAL RUNAWAY EVENT IN A BATTERY PACK

Resumen de: US2025137900A1

Disclosed herein is a sensing system that comprises a sensor positioned inside an enclosure of a battery pack, a fan positioned in a vicinity of the sensor, a plurality of tubes each connected between the fan and the battery pack, and a control unit connected to the fan and the sensor. The control unit is configured to control the fan to pull, through the plurality of tubes, gases and/or particulates generated in the battery pack, and control the fan to throw the pulled gases and/or particulates onto the sensor. The sensor is configured to detect a change in one or more physical stimuli associated with the battery pack based on the pulled gases and/or particulates. Thereafter, the control unit is configured to detect an occurrence of a thermal runaway event in the battery pack based on the detected change in the one or more physical stimuli.

BATTERY DETECTION CIRCUIT AND BATTERY DETECTION METHOD

Resumen de: US2025138096A1

A battery detection circuit and a battery detection method are provided. The battery detection circuit includes battery gauge circuits and a processing circuit. The battery gauge circuits read battery information of batteries, and the battery information at least includes a current battery capacity, a current temperature and a current cell voltage. The processing circuit receives and processes the battery information, and performs: determining whether a battery temperature of any one of the batteries is greater than a designated temperature; if negative, determining whether the current cell voltage of any one of the batteries is lower than a designated voltage, and if affirmative, adjusting the corresponding current battery capacity to generate a reported battery capacity.

ELECTRONIC DEVICE

Resumen de: US2025138681A1

An electronic device having a novel structure is provided. A battery is provided in each component of an electronic device, whereby the electronic device includes two batteries. The electronic device including the two batteries and a display portion that can be called a flexible display and has a plurality of foldable portions is provided as a novel device.

METHOD AND SYSTEM FOR CALCULATING BATTERY STATE OF CHARGE

Resumen de: US2025138091A1

A method of calculating a state of charge of a battery, includes: calculating, by at least one processor, a state of charge (SOC) of a battery; obtaining, by the at least one processor, a temperature of the battery; calculating, by the at least one processor, based on the obtained temperature, a plurality of temperatures associated with a plurality of SOCs of the battery that are gradually downgraded from the calculated SOC of the battery by a grade; determining, by the at least one processor, based on the calculated plurality of temperatures, a specific SOC associated with a discharge end point of the battery; and determining, by the at least one processor, based on the determined specific SOC, a change trend of the SOC of the battery.

LITHIUM SECONDARY BATTERY

Resumen de: US2025140845A1

Disclosed is a lithium secondary battery including: a positive electrode; a negative electrode; and an electrolyte, wherein the positive electrode comprises a positive electrode active material layer comprising a positive electrode active material layer composition, wherein the negative electrode comprises a negative electrode active material layer comprising a negative electrode active material layer composition, wherein the positive electrode active material layer composition comprises a positive electrode active material comprising a layered active material containing nickel, and an olivine-based active material, wherein the negative electrode active material layer composition comprises a negative electrode active material comprising a silicon-based active material, and wherein a part by weight of the olivine-based active material (A) based on 100 parts by weight of the positive electrode active material, and a part by weight of the silicon-based active material (B) based on 100 parts by weight of the negative electrode active material satisfy Formulas 1 and 2:4.5⁢2⁢4+0.9⁢3⁢9×e0.0⁢5⁢3⁢7×A

POSITIVE ELECTRODE ACTIVE MATERIAL AND LITHIUM ION SECONDARY BATTERY

Resumen de: US2025140851A1

A positive electrode active material includes a lithium-iron composite fluoride as a principal component,the lithium-iron composite fluoride being represented by Formula (1) below,LixFeF(3+x)  (1)where, x is a number satisfying 0.5

POSITIVE ELECTRODE ACTIVE MATERIAL AND BATTERY

Resumen de: US2025140838A1

A positive electrode active material includes a positive electrode active material particle that has a composition expressed as LixNiaCobMncMdOy, a sphericity standard deviation (Z) of the positive electrode active material particle satisfying Z≥0.018 (in the composition, 0.1≤x≤1.5, 0.5≤a≤1.0, 0≤b≤0.3, 0≤c≤0.3, 0≤d≤0.1, a+b+c+d=1.0, 1.5≤y≤2.1 are satisfied, and the M expresses at least one kind of element that is selected from the group consisting of B, Nb, W, Sr, Pr, La, Ba, Mg, Al, Zr, Sc, Ti, Y, Hf, and Sn).

TEMPERING PUMP WITH A STRUCTURED ROTOR CORE

Resumen de: US2025141289A1

A pump comprises a stator and a rotor, wherein the rotor has a rotor body and a rotor block, and is rotatably mounted around an axis of rotation. The rotor block has a metallic rotor core and magnets. The rotor core has several holes in a cross section. The rotor core comprises several grooves and several projections in a cross section on its radial inner wall.

POSITIVE ELECTRODE ACTIVE MATERIAL AND SECONDARY BATTERY

Resumen de: US2025140843A1

To provide a positive electrode active material in which a phase transition is inhibited and a secondary battery including the positive electrode active material. An unprecedented synthesis method has been developed in which lithium cobalt oxide particles are treated with a molten salt of MgF2—LiF as a reaction accelerator to facilitate the diffusion and doping of magnesium into lithium cobalt oxide bulk and to form a stable coating layer in the particle surface portion. Ex situ XRD analysis confirms the inhibition of the harmful phase transition and the emergence of a novel phase as the modified LiCoO2 is charged up to 4.7 V. The modified LiCoO2 shows high electrochemical performance during high-voltage operation. This technology provides a guideline for suppressing fundamental degradation associated with phase transition and achieving ultra-high energy density LiCoO2 positive electrodes.

ELECTRODE SHEET AND BATTERY

Resumen de: WO2025086939A1

Provided in the present application are an electrode sheet and a battery. The electrode sheet comprises a current collector, and an active substance layer which is provided on at least one functional surface of the current collector, wherein the active substance layer contains graphite. In the extension direction of the current collector, the active substance layer comprises recesses and a main body portion, wherein each of the recesses is provided with a groove, which does not penetrate the recess, in the side of the recess that faces away from the current collector, and each of the recesses comprises a first region that faces away from a surface of the current collector and a second region which is close to the surface of the current collector. The degree of orientation of graphite in the first region is lower than the degree of orientation of graphite in the main body portion, wherein the degree of orientation of graphite refers to the intensity ratio of the diffraction peak of the 004 crystal plane of the graphite to the diffraction peak of the 110 crystal plane of the graphite. By means of applying the electrode sheet to a battery, the quick charge performance of the battery can be improved, and the cyclic expansion rate of the battery can be lowered.

PREPARATION METHOD FOR AND USE OF LITHIUM-SILICON ALLOY MATERIAL

Resumen de: WO2025086940A1

A preparation method for and a use of a lithium-silicon alloy material. Under room temperature conditions, a layer of asphalt is pre-coated on the surface of a lithium-silicon alloy, and then a layer of LiF is coated, a lithium-silicon alloy negative electrode sheet is prepared via dry processing, and then assembly is performed to obtain a sulfide all-solid-state lithium battery. This lithium-silicon alloy negative electrode has high capacity (greater than 1500 mAh g-1). Coating materials having adhesive properties are selected to sequentially perform carbon coating and fluorine coating on the lithium-silicon alloy, so that the lithium-silicon negative electrode sheet can be easily prepared at room temperature. This two-layer coating method, while ensuring that the capacity of the lithium-silicon alloy is not reduced, improves the electronic conductivity of the lithium-silicon alloy negative electrode, effectively suppresses the formation of lithium dendrites on the negative electrode, and facilitates the formation of a compatible negative electrode interface with a sulfide solid-state electrolyte, thereby enabling the commercial application of sulfide all-solid-state lithium batteries.

BATTERY MODULE

Resumen de: US2025140968A1

A battery module includes a battery cell including a plurality of battery cells, a cooling member located at one end of the battery cell, and a plurality of heat transfer members, each of the heat transfer members being configured to discharge heat from each of the battery cells to the cooling member. The heat transfer members include a plurality of first heat transfer parts, each of the first heat transfer parts being located along a corresponding one of one side surfaces of the respective battery cells, and a plurality of second heat transfer parts, each of the second heat transfer parts being configured to at least partially surround a corresponding one of one ends of the respective battery cells, each of the one ends being adjacent to the cooling member.

METHOD FOR PREPARING CARBON-COATED SODIUM IRON FLUOROPHOSPHATE FROM WASTE LITHIUM IRON PHOSPHATE AND APPLICATION THEREOF

Resumen de: US2025140957A1

The present disclosure relates to the field of sodium-ion battery technology, and specifically, to a method for preparing carbon-coated sodium iron fluorophosphate from waste lithium iron phosphate and the application thereof. The method for preparing carbon-coated sodium iron fluorophosphate from waste lithium iron phosphate includes: mixing a waste lithium iron phosphate material with an alkaline solution for reaction, followed by solid-liquid separation, to obtain an aluminum-containing filtrate and a lithium iron phosphate filter residue; mixing the lithium iron phosphate filter residue, aluminum chloride and sodium chloride uniformly, followed by vacuum calcination, to obtain a calcination material; and mixing the calcination material with at least one of a sodium source, an iron source and a phosphorus source uniformly to obtain a mixture to which a fluorine source, a carbon source and a solvent are added for uniformly mixing, followed by drying and calcination sequentially to obtain the carbon-coated sodium iron fluorophosphate. The method has the advantages of low costs, a high added value, a short process, and a high recovery rate, and the carbon-coated sodium iron fluorophosphate obtained from the method has excellent electrochemical performance.

Battery Module

Resumen de: US2025140963A1

A battery module that comprises an electrochemical cell is provided. The battery module includes a polymer composition that comprises a polymer matrix that includes a thermotropic liquid crystalline polymer and a thermally conductive filler distributed within the polymer matrix. The polymer composition exhibits an in-plane thermal conductivity of about 3 W/m-K or more as determined in accordance with ASTM E1461-13 (2022) and a deflection temperature under load of about 230° C.) or more as determined in accordance with ISO 75:2013 at a load of 1.8 MPa.

LITHIUM-ION BATTERY, BATTERY, AND ELECTRIC APPARATUS

Nº publicación: US2025140941A1 01/05/2025

Solicitante:

CONTEMPORARY AMPEREX TECH CO LIMITED [CN]
CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Resumen de: US2025140941A1

This application relates to a lithium-ion battery, a battery, and an electric apparatus. The lithium-ion battery includes an electrolyte and a positive electrode plate. The electrolyte includes a lithium salt, where the lithium salt includes lithium hexafluorophosphate, and based on a total mass of the electrolyte, a mass proportion of the lithium hexafluorophosphate is 15% to 20%. The positive electrode plate includes a positive electrode current collector and a positive electrode film layer disposed on at least one side of the positive electrode current collector and containing a positive electrode active material. This application can improve cycling performance of the lithium-ion battery.