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METHOD FOR PRODUCING A SINTERED LAYER WHICH CAN BE USED AS A SOLID SEPARATOR OR PART OF AN ELECTRODE IN A BATTERY CELL, AND BATTERY CELL HAVING THE SINTERED LAYER

Resumen de: WO2026037800A1

Proposed is a method for producing a sintered layer which can be used as a solid separator or part of an electrode in a battery cell, comprising: a) mixing (S1) particles of a solid electrolyte material and particles of a polymeric binder to form a pulverulent composition, wherein shear force is introduced into the pulverulent composition during or after the mixing, whereby the polymeric binder is obtained at least in part in fibrillary form in the pulverulent composition, wherein the pulverulent composition comprises ≤ 1 wt.% of the polymeric binder; b) forming (S2) a precursor layer from the composition obtained in a); and c) sintering (S3) the precursor layer to form the sintered layer (1).

METHOD FOR PRODUCING A LAYER COMPOSITE AS A PRE-PRODUCT FOR AN ELECTRODE ASSEMBLY OF A BATTERY CELL; METHOD FOR PRODUCING AN ELECTRODE ASSEMBLY, AND LAYER COMPOSITE

Resumen de: WO2026037799A1

The invention relates to a method for producing a layer composite which is a pre-product for an electrode assembly of a battery cell, wherein the layer composite has at least one separator layer embedded on both sides, wherein the separator layer is embedded in a structure A-S-K or K-S-Cx, where A is an anode layer, K is a cathode layer, S is a separator layer, and Cx is a current-conducting layer for a bipolar battery cell, an anodic current-collecting layer or a cathodic current-collecting layer, wherein the layer composite contains a maximum of two separator layers S, and a maximum of one Cx layer, the method comprising: producing the structure A-S-K or K-S-Cx by joining and/or depositing the layers A, S, K or K, S, Cx simultaneously or in any order, wherein i) production takes place under the action of pressure and/or heat in order to bond at least the layers A and S and/or the layers K and S to one another under the influence of the pressure and/or the heat, and/or ii) during production, the layer K and/or A is formed by deposition on the layer S.

Batteriezelle

Resumen de: DE102024121718A1

Die Erfindung betrifft eine Batteriezelle (10) mit einem Gehäuse und einer innerhalb des Gehäuses angeordneten elektrochemischen Zelle (12), wobei das Gehäuse eine einem allgemeinen Zylinder mit geschlossener Leitkurve entsprechende zylindrische Grundform mit einer Grundfläche, einer zur Grundfläche parallelen Deckfläche und einer Mantelfläche aufweist. Das Gehäuse weist ein becherartig gestaltetes erstes Gehäuseteil (16), das im Bereich der Grundfläche und eines an die Grundfläche angrenzenden Teils der Mantelfläche angeordnet ist, ein becherartig gestaltetes zweites Gehäuseteil (18), das im Bereich der Deckfläche und eines an die Deckfläche angrenzenden Teils der Mantelfläche angeordnet ist, und ein hülsenartig gestaltetes drittes Gehäuseteil (20), das im Bereich zumindest eines Teils der Mantelfläche angeordnet ist, auf.Das erste und das zweite Gehäuseteil (16, 18) sind durch das dritte Gehäuseteil (20) verbunden.

PURIFICATION OF BLACK MASS

Resumen de: WO2026038022A1

The disclosure provides a method for separating a black mass material into first and second constituent parts. The first constituent part comprises or consists of particles of a hydrophobic material and the second constituent part comprises or consists of particles of a hydrophilic material. The method comprises providing an emulsion. The emulsion comprises a first liquid phase dispersed as droplets in a second liquid phase, and the second liquid phase is or comprises water. The method further comprises contacting the emulsion with the black mass material to provide an emulsion-material mix and thereby allowing the particles of the hydrophobic material to be adsorbed into or onto the droplets of the first liquid phase, and the particles of the hydrophilic material to remain in the second liquid phase. The method further comprises separating the particles of the hydrophobic material and the particles of the hydrophilic material to thereby separate the first and second constituent parts of the black mass material. 15

SAFE DISCHARGE AFTER BATTERY PACK THERMAL RUNAWAY

Resumen de: WO2026036341A1

A vehicle includes: an electric motor; and a battery pack, the battery pack comprising: a plurality of battery cells; a thermal management system configured to conduct thermal management of the battery pack; and a battery management system configured to: monitor at least one parameters of the battery pack; and detect a battery thermal runaway incident based on the at least one parameters of the battery pack. The vehicle further includes: a vehicle management system; and at least one load. When the battery thermal runaway incident is detected, the battery management system is configured to determine whether output power of the plurality of battery cells matches a target power. When the output power of the plurality of battery cells and the target power does not match, the vehicle management system sends a first control signal to discharge the plurality of battery cells through the at least one load.

Lithium Secondary Battery Comprising Lithium-Rich Manganese-Based Oxide and Method for Manufacturing the Same

Resumen de: US20260051488A1

A lithium secondary battery includes a positive electrode, a negative electrode, a separator, and an electrolyte. The positive electrode includes lithium-rich manganese-based oxide in which a content of manganese in all metals excluding lithium is greater than 50 mol %, and a ratio of a number of moles of lithium to a number of moles of all metals excluding lithium (Li/Me) is greater than 1. When a total discharge curve area is defined as 100% in a dQ/dV graph which is obtained by differentiating a graph of a voltage V and a battery discharge capacity Q measured while charging the lithium secondary battery to 4.6V at 0.1C and then discharging it to 2.0V at 0.1C, the discharge curve area in a voltage range of 2.0 to 3.5V is 35% or less. Also provided is a method for manufacturing the same.

CHLORIDE CATHOLYTE COMPOUNDS, CATHODE COMPOSITES, AND SOLID STATE BATTERIES MADE THEREWITH

Resumen de: US20260051497A1

A cathode composite may comprise about 5% wt/wt to about 99% wt/wt of Na2+(4−y)xMxZr1−xCl6 or Li2+(4−y)xMxZr1−xCl6 and a cathode material as a balance thereof. The cathode material is selected from the group consisting of a carbon-based conductive material, a Na-ion O3-type layered oxide material, a polyanion-type cathode material, and combinations thereof. x is 0≤x≤1, M is a cation, y is M's valence numbers, and M is selected from the group consisting of a Nb5+, Ta5+, V5+, Cr3+, Mo6+, Mo4+, W6+, W4+, Mn2+, Mn4+, Mn5+, Fe3+, Fe2+, Co3+, Co2+, Ni3+, Ni2+, and combinations thereof. A solid-state battery may comprise a housing enclosing an anode and the cathode composite. The cathode composition may function as a cathode and as a solid electrolyte.

POSITIVE ELECTRODE FOR ALL-SOLID-STATE BATTERY, ALL-SOLID-STATE BATTERY INCLUDING THE SAME, AND METHOD OF MANUFACTURING THE SAME

Resumen de: US20260051509A1

Disclosed are positive electrodes and all-solid-state batteries including the positive electrodes. A positive electrode includes a positive electrode current collector, a positive electrode active material layer on the positive electrode current collector, and a porous film in the positive electrode active material layer. The positive electrode active material layer includes positive electrode active material particles and solid electrolyte particles. The positive electrode active material layer has a first section and a second section that are distinct across the porous film. The first section is between the positive electrode current collector and the porous film. An average particle diameter of the solid electrolyte particles in the first section is different from an average particle diameter of the solid electrolyte particles in the second section.

TITANIUM DIOXIDE IN FLOODED DEEP CYCLE LEAD-ACID BATTERIES

Resumen de: US20260051505A1

A flooded deep cycle lead-acid battery includes at least one negative plate, at least one positive plate and an electrolyte. The positive plate comprises a positive electrode grid made primarily of lead and a positive paste including a lead compound and titanium dioxide (TiO2) additive. A process of manufacturing a positive active material paste for a flooded deep cycle lead-acid battery includes: directly adding TiO2 into a paste mixer with a lead compound to form a mix of positive additives; dry mixing the positive additives to form a dry mixture; adding water to the dry mixture; wet-mixing the water with the dry mixture to form a wet mixture; pasting and curing a positive electrode grid with the wet mixture.

POSITIVE ELECTRODE PLATE AND LITHIUM-ION BATTERY COMPRISING THE POSITIVE ELECTRODE PLATE

Resumen de: US20260051504A1

Disclosed are a positive electrode plate and a lithium-ion battery including the same. The positive plate includes a positive electrode current collector and a positive electrode coating layer; and the positive electrode coating layer includes a first coating layer and a second coating layer, wherein the first coating layer is coated on the positive electrode current collector surface, and the second coating layer is coated on the first coating layer surface. The lithium-ion battery has a good safety performance, and when mechanical misuse (needling, weight impact) occurs, the probability of battery fire failure is significantly reduced.

BINDER SOLUTION FOR A SECONDARY BATTERY

Resumen de: US20260051503A1

The present invention relates to a binder solution for a secondary battery, comprising at least one non-aqueous solvent and at least one fluoropolymer comprising recurring units derived from a) vinylidene difluorides and b) at least one fluorinated olefin monomer containing at least one —SO2X functional group, X being selected from X′ and OM, X′ being selected from the consisting of F, Cl, Br, and I; and M being selected from the group consisting of H, an alkaline metal and NH4, wherein b) the fluorinated olefin monomer is present in an amount from 0.1 to 10.0 mol %, the mol % being relative to the total moles of recurring units; to a solid composite electrolyte comprising at least one fluoropolymer according to the present invention and at least one sulfide-based solid ionic conducting inorganic particle; to a slurry for manufacturing a solid composite electrolyte comprising a binder solution according to the present invention and at least one sulfide-based solid ionic conducting inorganic particle, optionally further comprising at least one electroactive material and/or at least one conductive agent; and to an electrode comprising at least one fluoropolymer according to the present invention and at least one electroactive material, optionally further comprising at least one conductive agent and/or at least one sulfide-based solid ionic conducting inorganic particle. The present invention also relates to a secondary battery comprising a positive electrode, a negative e

NEGATIVE ELECTRODE FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME

Resumen de: US20260051495A1

Examples of the disclosure include a negative electrode for a rechargeable lithium battery and a rechargeable lithium battery. The negative electrode includes a current collector, and a negative electrode active material layer on the current collector. The negative electrode active material layer includes a I region, a II region and a III region which are separated by boundaries extending along a longitudinal direction. The II region includes a first crystalline carbon negative electrode active material, the I region and the III region include a second crystalline carbon negative electrode active material, and a tap density of the first crystalline carbon negative electrode active material is lower than a tap density of the second crystalline carbon negative electrode active material.

POSITIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, BATTERY MODULE AND BATTERY SYSTEM EACH USING SAME

Resumen de: US20260051493A1

A positive electrode for a non-aqueous electrolyte secondary battery, including a positive electrode current collector and a positive electrode active material layer present on the positive electrode current collector, wherein: the positive electrode current collector has, on at least a part of its surface on a side of the positive electrode active material layer, a current collector coating layer including a conductive material, the positive electrode active material layer includes a positive electrode active material and a conductive carbon, the positive electrode active material includes a compound represented by a formula LiFexM(1-x)PO4, wherein 0≤x≤1, M is Co, Ni, Mn, Al, Ti or Zr, the positive electrode active material layer has a porosity of 40% or less, and an amount of the conductive carbon is 0.5 to 3.5% by mass with respect to a total mass of the positive electrode active material layer.

SECONDARY BATTERY AND ELECTRONIC DEVICE

Resumen de: US20260051501A1

A secondary battery, including: a positive electrode, a negative electrode, and an electrolyte. The positive electrode includes a positive current collector and a positive active material layer formed on the positive current collector, the positive active material layer includes a positive active material and polyvinyl butyral, and the electrolyte includes lithium difluorophosphate and a trinitrile compound. A shedding resistance of the positive electrode is improved, an initial resistance of the secondary battery is further reduced, and a low-temperature rate characteristic is further improved.

APPARATUS AND METHOD FOR CONTROLLING BATTERY

Resumen de: US20260048730A1

An apparatus for a vehicle may comprise a processor and a memory storing at least one instruction that, when executed by the processor communicating with the memory, is configured to cause the apparatus to determine, via at least one sensor of the vehicle and based on a state of health (SOH) of a battery of the vehicle, a degradation state of the battery, output a signal indicating the determined degradation state of the battery, and control, based on the signal, at least one of charging or discharging of the battery by expanding at least one of a charge prohibition region or a discharge prohibition region of a state of charge (SOC) control strategy of the battery.

SYSTEM AND METHOD TO REDUCE A THERMAL EVENT OF A BATTERY ARRAY

Resumen de: US20260048684A1

Systems and methods for reducing a possibility of propagated battery cell degradation are described. In one example, degradation of a battery cell may be determined via pressure or temperature. If degradation is detected, increased cooling of battery cells is held in abeyance to permit venting of gas generated via a battery so that thermal loading and pressures within the battery may be reduced.

ELECTRIC VEHICLE RANGE EXTENDER INTEGRATION

Resumen de: US20260048683A1

Example methods to manage a plurality of battery packs of an electric vehicle include initiating a charging process for a primary battery pack and an auxiliary battery pack, determining that an Open Circuit Voltage (OCV) of the primary battery pack matches an OCV of the auxiliary battery pack, and based on determining that the OCV of the primary battery pack matches the OCV of the auxiliary battery, connecting the primary and auxiliary battery packs in parallel and initiating parallel charging of the primary battery pack and the auxiliary battery pack.

BATTERY MANAGEMENT SYSTEM INCLUDING WAKE-UP FUNCTION AND BATTERY MANAGEMENT SYSTEM WAKE-UP METHOD

Resumen de: US20260048681A1

The present disclosure relates to a wake-up function included in a battery management system (BMS) and a BMS wake-up method using the same. The BMS includes a micro-controller unit (MCU) configured to manage a battery, and a protection circuit configured to monitor the battery. When the protection circuit detects an abnormality in the battery while the BMS is in one of a shutdown mode and a sleep mode, the protection circuit outputs a wake-up signal to the BMS.

Battery Management System, Battery Management Method, Battery Pack, and Electric Vehicle

Resumen de: US20260048680A1

A battery management system includes a sensor to sense voltage and current of a battery, memory to store over-potential management information including reference peak and reference peak voltage values, and a controller to command constant-current charging using a maximum allowable C-rate to a charging circuit when the reference peak value is equal to or larger than a threshold peak value, in response to a charge request, determine a differential capacity curve indicating a correlation between the voltage and differential capacity of the battery within a range based on the sensed voltage and current during the charging, determine main peak and main peak voltage values indicating differential capacity and voltage of a peak of the differential capacity curve, respectively, and update the reference peak and reference peak voltage values to equal the main peak and main peak voltage values, when the main peak value is less than the threshold peak value.

SWAPPABLE BATTERY FOR ELECTRIFIED VEHICLE AND METHOD OF CONSTRUCTION

Resumen de: US20260048679A1

The embodiments disclose a swappable battery system for electrified vehicles includes a rigid frame formed from metal or composite materials and configured for mounting on the vehicle roof. A rooftop cover encloses at least a portion of the frame, and a fire-retardant hard plastic plate forms the insulated floor. At least two openable side panels allow access to the compartment. Integrated front, rear, and side ventilation sections feature motorized louvers that regulate airflow and internal temperature. A plurality of swappable low voltage battery modules are removably installed within the frame and provide power to the vehicle's electric motor and battery control systems. A main battery management system is operatively coupled to the battery modules and configured to monitor voltage, temperature, charge state, and operational parameters. The system extends vehicle range by enabling fast battery replacement and maintaining safe, efficient energy delivery and thermal regulation during operation.

LIGHT AND BATTERY KEYED WITH AN ASYMMETRICALLY SHAPED TERMINAL

Resumen de: US20260049697A1

A portable light has a cavity configured for receiving the electrical power source and has an opening between the cavity and exterior to the portable light. A contact assembly in the cavity has an asymmetrical keying feature in a predetermined orientation in the cavity relative to the opening. An electrical power source has an asymmetrical electrical terminal configured to engage the keying feature in a predetermined orientation, and a charging port at a predetermined location relative to the asymmetrical electrical terminal. A cover includes an orienting member that engages a recess and/or projection of the electrical power source for moving the electrical power source into a predetermined orientation whereat the charging port of the electrical power source is accessible through the opening to receive charging current directly from an external charging source.

SECONDARY BATTERY AND ELECTRONIC APPARATUS

Resumen de: US20260051548A1

A secondary battery includes a positive electrode plate. The positive electrode plate includes a current collector, a tab protruding from the current collector, and an insulation layer disposed on at least one surface of the current collector. The insulation layer is disposed along a side edge of the current collector and abutted against the active material layer; the tab protrudes from the side edge of the current collector; A ratio of a thickness of the insulation layer to a thickness of the active material layer is 0.5-0.7, and the thickness of the active material layer is 200-400 μm.

METHOD FOR SORTING ALL-SOLID-STATE BATTERY OF CONFORMING PRODUCT

Resumen de: US20260051545A1

A method of determining conforming or non-conforming all-solid-state batteries includes stacking and pressing a cathode, an anode, and a solid electrolyte layer, measuring the cell's resistance in a high frequency region and an ultra-high frequency region, and sorting the cell based on the measured values. Specific frequency windows (for example, about 2-4 kHz or 30-70 kHz) and numeric thresholds (e.g., resistance of 100-150 mΩ for the high frequency region or 80-200 mΩ for the ultra-high frequency region) are used as criteria for determining if the battery meets conformity requirements. A conforming unit cell can further exhibit an initial capacitance at least 90% of its design capacitance. The method can also include discarding or reworking non-conforming pressed structures and proceeding with further battery-manufacturing steps only for conforming cells, enhancing production efficiency and ensuring high-quality final products.

ELECTROLYTE COMPOSITIONS INCLUDING QUATERNARY AMMONIUM COMPOUNDS FOR SECONDARY BATTERIES

Resumen de: US20260051540A1

Disclosed is an electrolyte composition, a secondary battery comprising the electrolyte composition, and a method of preparing a secondary battery. The electrolyte composition includes an electrolyte compound, a quaternary ammonium fluoride-containing compound, and a solvent.

Pouch Type Battery Case and Apparatus for Forming the Same

Nº publicación: US20260051573A1 19/02/2026

Solicitante:

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

Resumen de: US20260051573A1

A pouch type battery case has a pair of cases in which at least one of the pair of cases includes: a cup part, a terrace, and a protrusion. The cup part is recessed; a and the terrace is disposed on a circumference of the cup part and has a sealing part. The protrusion protrudes from the terrace in a direction opposite to a depth direction of the cup part and at least a portion of the sealing part is provided on the protrusion. An apparatus for manufacturing the pouch type battery case is also provided.