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ELECTRODE ASSEMBLY, BATTERY CELL, BATTERY, AND ELECTRICAL DEVICE

Resumen de: US2025260144A1

An electrode assembly comprises a positive electrode plate, a negative electrode plate, and a separator, where the separator is disposed between the positive electrode plate and the negative electrode plate; the expansion layer is disposed between the positive electrode plate and the negative electrode plate, and the expansion layer is used for expansion in response to a preset condition to cut off an electrical connection between the positive electrode plate and the negative electrode plate.

INCOMPATIBLE BATTERY COOLING FLUID DETECTION SYSTEM

Resumen de: US2025260084A1

An immersion cooling system for a battery of an electric vehicle. The immersion cooling system includes an incompatible fluid detection system configured to detect a presence of an incompatible fluid within a fluid circuit of the immersion cooling system. The incompatible fluid can include a non-dielectric fluid that has entered or accumulated within the fluid circuit, as well as a dielectric fluid that has been contaminated or is reaching, if not already attained, an end-of-life for the dielectric fluid. In response to a determination of a presence of the incompatible fluid in the fluid circuit, a notification can be generated to alert an operator of the detection of the incompatible fluid. Additionally, the system can take actions, including closing a valve(s), deactivating a pump, and/or opening a bypass circuit(s), among other actions, to isolate at least the battery from the incompatible fluid.

APPARATUS AND METHOD FOR INSPECTING A SECONDARY CELL

Resumen de: US2025260080A1

An inspection apparatus for inspecting at least one secondary cell includes a fixed support part; a movable part; and pressing parts that are installed between the support part and the movable part. The pressing parts are freely movable along the main axis, two adjacent pressing parts defining a space (120) for accommodating a secondary cell. Each pressing part that is in contact with the at least one secondary cell has a temperature sensor, the temperature sensor being intended to measure the temperature of the at least one secondary cell which is subjected to a pressure between the pressing parts. An inspection method for inspecting at least one secondary cell is related to the inspection apparatus.

Heat Sink Assembly

Resumen de: US2025260086A1

A heat sink assembly including first and second heat sinks having a plurality of ribs integrally molded along a length direction by extrusion molding, the spaces between the ribs forming a flow path through which a coolant flows, the first and second surfaces at both ends of the length direction being open is provided. The first and second heat sinks have communication ports on one side wall adjacent to the second surface, and the first and second heat sinks are integrally formed by the side walls forming a bonding surface in a way that the communication ports align. The ribs of the first and second heat sinks have a lengths such that both ends thereof are spaced apart from the first and second surfaces by a predetermined distance, and the open first and second surfaces of both ends of the first and second heat sinks are closed by end plugs inserted into the first surface and the second surface and spaced apart from the ends of the ribs.

POSITIVE ELECTRODE ACTIVE MATERIAL AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Resumen de: US2025260002A1

Provided is a positive electrode active material having low resistance and improved rate characteristics. This positive electrode active material contained in a positive electrode of a nonaqueous electrolyte secondary battery contains a lithium-transition metal composite oxide and a carbonaceous film formed on the surface of the lithium-transition metal composite oxide, wherein the carbonaceous film contains an alkali metal except Li and/or an alkali earth metal.

FUNCTIONAL SAFETY FOR INTELLIGENT BATTERY CELL

Resumen de: US2025260076A1

A battery pack can comprise a battery monitoring system that can monitor a battery metric of a battery cell of a battery system cluster board, in response to a determination that the battery metric satisfies a first bypass condition, enables a bypass mode applicable to the battery system cluster board, and in response to a determination that the battery metric no longer satisfies the first bypass condition, exits the bypass mode. A primary controller can in response to a determination that a second bypass condition applicable to the battery system cluster board has been satisfied, sends an instruction to the battery monitoring system to enter the bypass mode, and in response to a determination that the second bypass condition is no longer satisfied, sends an override instruction to the battery monitoring system to exit the bypass mode.

CARBON NANOTUBE DISPERSION COMPOSITION, MIXTURE SLURRY, ELECTRODE FILM, AND SECONDARY BATTERY

Resumen de: US2025256969A1

A carbon nanotube dispersion composition includes carbon nanotubes (A), a dispersant (B), and a solvent (C). A particle diameter D50 at a cumulative volume of 50% according to laser diffraction particle size distribution measurement is 0.3 to 7 μm, and (1) and (2) below are satisfied. (1) The dispersant (B) is a polymer that has a weight average molecular weight of 5,000 or more and 360,000 or less and includes a carboxyl group-containing structural unit derived from at least one of (meth)acrylic acid and (meth)acrylate having a carboxyl group. (2) When the particle diameter D50 at a cumulative volume of 50% according to laser diffraction particle size distribution measurement of the carbon nanotube dispersion composition is X μm, and a pH is Y, X and Y satisfy (Formula a) and (Formula b) below:Y≥-0.1⁢4⁢9⁢X+4.545(Formula⁢a)Y≤-0.1⁢3⁢4⁢X+5.1⁢4⁢0.(Formula⁢b)

POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREOF, NEGATIVE ELECTRODE PLATE, ELECTRODE ASSEMBLY, BATTERY, AND ELECTRIC DEVICE

Resumen de: US2025256985A1

A positive electrode material includes a laminar lithium-containing metal oxide which includes other positive ions with a radius greater than a radius of lithium ions. The radius of the other positive ions in the positive electrode material is greater than the radius of the lithium ions, so that the other positive ions may play a supporting role in a laminar structure to enhance a misalignment energy barrier, alleviate the problem of aggravated misalignment of metal ions and lithium ions in a laminar negative electrode, and improve the stability of the laminar structure. Moreover, the other positive ions in the positive electrode material may also be embedded into a negative electrode material, where the other positive ions with the greater ionic radius play a supporting role in graphite, so as to reduce expansion/shrinkage of the graphite in the process that the ions with the less ionic radius are intercalated/deintercalated.

POSITIVE ELECTRODE ACTIVE MATERIAL AND METHOD FOR MANUFACTURING A POSITIVE ELECTRODE ACTIVE MATERIAL

Resumen de: US2025256984A1

A positive electrode active material for lithium-ion rechargeable batteries comprises particles having Li, M′, and oxygen. M′ comprises Ni in a content x, wherein x≥80 at %, relative to M′; Co in a content y, wherein 0.01≤y≤20.0 at %, relative to M′; Mn in a content z, wherein 0≤z≤20.0 at %, relative to M′; Y in a content b, wherein 0.01≤b≤2.0 at %, relative to M′; Zr in a content c, wherein 0.01≤c≤2.0 at %, relative to M′; D in a content a, wherein 0≤ a≤5.0 at %, relative to M′. D is selected from B, Ba, Ca, Cr, Fe, Mg, Mo, Nb, S, Si, Sr, Ti, V, W, and Zn. The material comprises secondary particles, wherein each of the secondary particles consists of at least two primary particles and at most twenty primary particles.

POSITIVE ELECTRODE ACTIVE MATERIAL, POSITIVE ELECTRODE, LITHIUM-ION BATTERY, AND METHOD OF MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL

Resumen de: US2025256982A1

A positive electrode active material has a composition represented by LixNiaCObMncM1dM2eO2 and a TM interlayer distance (D) of 2.02 Å to 2.30 Å. In the composition, 0.1≤x≤1.5, 0.5≤a≤1.0, 0≤b≤0.3, 0≤c≤0.3, a+b+c=1.0, 0.0005≤d≤0.050, and 0.0005≤e≤0.050, M1 represents at least one type of element selected from the group including Ba, Pr, La, Y, Sr, Ce, Se, Hf, Rh, Zr, and Sn, and M2 represents at least one type of element selected from the group including W, Re, Sb, Sn, Ta, Os, Ir, Mo, Nb, Tc, Ru, Ga, Ag, Pd, Ge, As, Zr, In, Pt, Al, and Ti.

SEMICONDUCTOR DEVICE AND OPERATING METHOD OF SEMICONDUCTOR DEVICE

Resumen de: US2025260240A1

To provide a battery control circuit with a novel structure, a battery protection circuit with a novel structure, and a power storage device including the battery circuit. The semiconductor device includes n cell-balance circuits (n is an integer greater than or equal to 1). One secondary battery is electrically connected to one cell-balance circuit. The cell-balance circuit includes a comparison circuit, and a memory element is electrically connected to an inverting input terminal of the comparison circuit. The memory element includes a first transistor and a capacitor. A potential is retained. The retained potential changes in accordance with a change in a potential of a negative electrode of the secondary battery. The comparison circuit has a function of comparing the retained potential with a potential of a positive electrode of the secondary battery. Output from the comparison circuit controls a gate voltage of a second transistor electrically connected to the secondary battery in parallel. The first transistor includes a metal oxide including indium in a channel formation region.

THERMAL INTERFACE MATERIAL INSTALLATION WITHIN A TRACTION BATTERY PACK

Resumen de: US2025260085A1

A method of assembling components of a traction battery includes dispensing a thermal interface material onto a release sheet. While the thermal interface material remains on the release sheet, the method applies the thermal interface material to a component of a traction battery pack. The method then separates the release sheet from the thermal interface material while the thermal interface material remains on the component of the traction battery pack.

REPLACEABLE BATTERY

Resumen de: US2025260087A1

According to the present disclosure, a replaceable battery includes a cell stack having a rectangular parallelepiped shape, in which a plurality of battery cells are stacked, a case for accommodating the cell stack, and a pair of rails fixed to a lower side of a bottom plate of the case and extending in a longitudinal direction of the case, in which the replaceable battery is configured to be slid in the longitudinal direction and removably mounted on a vehicle and. A metal member for heat removal is provided in an upper side of the bottom plate and in a lower side of the cell stack, and the metal member is disposed between the pair of rails so as to extend, in a bar shape, in the longitudinal direction of the case.

SEPARATORS FOR HIGH VOLTAGE RECHARGEABLE LITHIUM BATTERIES AND RELATED METHODS

Resumen de: US2025260074A1

In accordance with at least selected embodiments, the present disclosure or invention is directed to improved or novel separators, cells, batteries, and/or methods of manufacture and/or use. In accordance with at least certain embodiments, the present disclosure or invention is directed to improved or novel separators such as a separator for a high energy and/or high voltage lithium ion battery which is stable up to a 4.5 volt, or preferably up to a 5.0 volt or higher charging voltage, such as a novel or improved single or multilayer or multiply microporous separator membrane. In accordance with at least selected embodiments, the present application or invention is directed to novel or improved porous membranes or substrates, separator membranes, separators, composites, electrochemical devices, batteries, cells, methods of making such membranes or substrates, separators, cells, and/or batteries, and/or methods of using such membranes or substrates, separators, cells, and/or batteries. In accordance with at least certain embodiments, the present application is directed to novel or improved microporous membranes, battery separator membranes, separators, energy storage devices, batteries including such separators, methods of making such membranes, separators, and/or batteries, and/or methods of using such membranes, separators and/or batteries. In accordance with at least certain selected embodiments, the present invention is directed to a novel or improved separator membrane or

SILICON-CARBON COMPOSITE MATERIAL AND ANODE COMPRISING THE SAME

Resumen de: US2025259992A1

The present disclosure relates to a silicon-carbon composite material, comprising: a porous carbon scaffold comprising micropores and mesopores and a total pore volume of more than 0.5 cm3/g; a silicon content in the range of ≥30 wt.-% to ≤75 wt.-%, relating to the silicon-carbon composite material; nanoparticles comprising at least one of the elements Cu, Fe or Ni, wherein the nanoparticles are positioned on the surface of the silicon-comprising carbon scaffold, and nanowires, selected from silicon nanowires and carbon nanowires; wherein the nanowires are grown on the nanoparticles, and wherein a first surface coating is provided which is at least partially applied on a first surface area of silicon-carbon composite material, the surface coating comprising at least one of the elements selected from C, Al, Si, Ti, Zr and Nb.

CATHODE COMPOSITIONS WITH BLENDS OF INTERCALATION MATERIALS FOR USE IN A LITHIUM SULFUR BATTERY

Resumen de: US2025260001A1

Exemplary cathode materials include a mixture of an electroactive sulfur material (e.g., S8) and a blended non-sulfur electroactive material comprising two or more non-sulfur electroactive materials, wherein the blended non-sulfur electroactive material is selected such that a discharge voltage profile of the blend of intercalation materials—considered apart from the sulfur electroactive material—has a discharge voltage profile that has substantial overlap with the discharge voltage profile of the sulfur electroactive material. For example, in typical ether electrolytes commonly used in sulfur batteries the discharge voltage profile of S8-Li2S conversion has multiple plateaus (e.g., two plateaus) due to the multistep conversion of sulfur to soluble/intermediate polysulfides (PS) followed by progression to solid or quasi-solid products (e.g., Li2S2/Li2S). By matching this discharge profile with a provided blend of non-sulfur electroactive materials, the rate and efficiency characteristics of the sulfur cathode can be improved throughout the battery discharge process.

BATTERY MODULE INCLUDING SEALING PORTION

Resumen de: US2025260103A1

A battery module includes a first sub-module and a second sub-module respectively including a cell assembly formed by stacking a plurality of battery cells and a protective cover accommodating at least a portion of the cell assembly, and facing each other in a first direction, and a sealing portion provided on the protective cover and disposed on at least a portion of a peripheral surface of the protective cover. The sealing portion is formed by a plurality of sealing components separable based on the peripheral surface of the protective cover.

LITHIUM-ION CELL HAVING RIGID STRUCTURE WITH PRESSURE

Resumen de: US2025260069A1

A device that includes an electrochemical cell that includes a rigid housing, electrodes that comprises an anode, a cathode, and an adjustable pressure element configured to assert a controlled pressure on at least one of the electrodes. The controlled pressure is set to a first value during a first point in time and is set to a second value during a second point in time. The electrodes and the adjustable pressure element are located within the rigid housing.

VEHICLE

Resumen de: US2025260068A1

ECU performs a process including the steps of acquiring a resistance value of an insulation resistance, determining that a resistance value is equal to or less than a threshold value, determining that an electric leakage occurs on the vehicle body side, turning on a SMR when the resistance value is greater than the threshold value, acquiring a resistance value of the insulation resistance, determining that an electric leakage occurs on the battery pack side when the resistance value is equal to or less than the threshold value, and determining that there is no electric leakage when the resistance value is greater than the threshold value.

METHOD FOR PREPARING LITHIUM IRON PHOSPHATE AND USE THEREOF

Resumen de: US2025256964A1

The present disclosure provides a method for preparing lithium iron phosphate and use thereof. The method comprises: adding a mixed solution of ferrous salt and ammonium dihydrogen phosphate, a citric acid solution and a pH adjusting agent in parallel into a first reactor for reaction, and simultaneously extracting the materials in the first reactor to a second reactor, and adding a copper salt solution and a sodium hydroxide solution to the second reactor for reaction, and refluxing the materials in the second reactor into the first reactor, mixing the solid material obtained in the reaction with a lithium source, and calcining the mixture in an ammonia gas stream to obtain lithium iron phosphate. This method can prepare a lithium iron phosphate precursor with a spherical structure, thereby improving the electrochemical performance of the subsequently prepared lithium iron phosphate material, which has a relatively high conductivity.

SOLID ELECTROLYTES AND METHODS FOR MAKING THE SAME

Resumen de: US2025256979A1

In accordance with the purpose(s) of the present disclosure, as embodied and broadly described herein, the disclosure, in one aspect, relates to solid chalcohalide electrolytes and the efficient synthesis of solid chalcohalide electrolytes. The electrolytes have the general formula AaMbNcXdYeSf and have relatively high ionic conductivity. The electrolytes can be a component of different types of batteries. The process of synthesizing the electrolytes can be done with cost-effective materials, which is useful for scaling-up production of batteries such as all-solid-state batteries.

POSITIVE ACTIVE MATERIAL, METHOD FOR PREPARING SAME, POSITIVE ELECTRODE PLATE CONTAINING SAME, SECONDARY BATTERY, AND ELECTRICAL DEVICE

Resumen de: US2025256965A1

This application provides a positive active material. The positive active material is a composite of NaxRy(PO4)z(P2O7)k and C, where 1≤x≤7, 1≤y≤4, 1≤z≤2, 1≤k≤4, and R includes at least one of Mg, Al, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, Sn, Hf, Ta, W, or Pb; and a water content of the positive active material is not higher than 1600 ppm. This application further provides a method for preparing the positive active material, a positive electrode plate containing the material, a secondary battery, and an electrical device. The positive active material of this application contains a relatively low water content.

A COMPOSITE POWDER FOR USE IN THE NEGATIVE ELECTRODE OF A BATTERY AND A BATTERY COMPRISING SUCH A COMPOSITE POWDER

Resumen de: US2025256967A1

A composite powder for use in a negative electrode of a battery comprising composite particles, said composite particles comprising a carbon matrix material and silicon-based particles embedded in said carbon matrix material, said composite powder having a Raman spectrum, wherein a D band and a D'band, both corresponding to the carbon matrix material contribution, have their respective maximum intensity ID between 1330 cm−1 and 1360 cm−1 and ID′ between 1600 cm−1 and 1620 cm−1, wherein the ratio ID/ID′ is at least equal to 0.9 and at most equal to 4.0.

CORE-SHELL-TYPE FLUORINE-BASED RESIN PARTICLES HAVING IMPROVED FLOWABILITY AND FLOCCULATION, AND PREPARATION METHOD

Resumen de: US2025257204A1

A dispersion includes core-shell-type fluorine-based resin particles having improved flowability and cohesion properties. The particles, a mixture or slurry (dispersion) including the particles, and a preparation method for the particles, mixture, and slurry. The particles each have an acryl monomer added to a perfluorinated polymer particle dispersion so as to have a perfluorinated polymer core and an acrylic polymer shell.

SUBSTRATE FOR SEPARATOR OF ELECTROCHEMICAL DEVICE, SEPARATOR INCLUDING SAME, AND METHOD OF FORMING BATTERY CELL SEPARATOR

Nº publicación: US2025260125A1 14/08/2025

Solicitante:

LG ENERGY SOLUTION LTD [KR]
LG ENERGY SOLUTION, LTD

Resumen de: US2025260125A1

A separator substrate for an electrochemical device. The separator substrate has pores that are small and uniform in size, good physical strength and durability, and high dielectric breakdown voltage. Therefore, with the use of the separator substrate, the probability of short circuiting is low.