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METHOD FOR MANUFACTURING A SOLID SULFIDE ELECTROLYTE

Resumen de: US2025300219A1

The present invention relates to a method for manufacturing a solid sulfide electrolyte by mixing of the solid electrolyte precursor comprising Li2S, Li3PS4 and LiX, such as LiCl. The present inventors have demonstrated that a low-energy mixing step is sufficient to prepare the solid electrolyte mixture, which after subjection to the heat-treatment affords the solid sulfide electrolyte having an argyrodite-type crystal structure in high purity.

NEGATIVE ELECTRODE MATERIAL FOR LITHIUM-ION SECONDARY BATTERY, NEGATIVE ELECTRODE FOR LITHIUM-ION SECONDARY BATTERY, AND LITHIUM-ION SECONDARY BATTERY

Resumen de: US2025300216A1

A negative electrode material for a lithium-ion secondary battery comprising graphite particles satisfying, in a ratio of R value, which is an intensity ratio Id/Ig of a maximum peak intensity Ig in the range of 1580 cm−1 to 1620 cm−1 and a maximum peak intensity Id in the range of 1300 cm−1 to 1400 cm−1 in a Raman spectrum obtained by a Raman spectroscopy measurement, a ratio of the particles with R≥0.2 is 10% by number or more, and an average value of a half width of Id in the top 10 spectra with R values is 60 cm−1 or less.

LITHIUM NICKEL PHOSPHATE TERNARY GLASSES, METHOD TO OBTAIN THEM AND THEIR USES

Resumen de: US2025300176A1

The present disclosure relates to lithium nickel phosphate ternary glasses and to the method to obtain them. The disclosure also relates to the preparation and use of lithium nickel phosphate ternary glasses as active materials of positive electrodes, in particular of metal-ion accumulators, as well as the active materials and electrodes.

POSITIVE ELECTRODES AND RECHARGEABLE LITHIUM BATTERIES

Resumen de: US2025300173A1

A positive electrode includes a positive electrode current collector and a positive electrode active material layer, the positive electrode active material layer including a positive electrode active material. The positive electrode active material includes core particles including a layered lithium nickel-manganese-based composite oxide including about 0.1 mol % to about 2 mol % of cobalt based on 100 mol % of a total metal content in the layered lithium nickel-manganese-based composite oxide, excluding lithium, and an aluminum coating layer on the surface of the core particles, wherein, in a dQ/dV graph of voltage during standard charging and discharging, evaluated under a constant current of 0.2 C, an applied current of 0.5 mA to 0.7 mA, and where 1 C=200 mAh/g, a point where a tangent line drawn at a first inflection point meets the line where dQ/dV=0 is in a voltage range of about 3.68 V to about 3.70 V.

ELECTRODE PLATE, ELECTRODE ASSEMBLY AND RECHARGEABLE BATTERY INCLUDING THE SAME

Resumen de: US2025300183A1

An electrode plate includes a substrate including a base layer and a first conductive layer and a second conductive layer disposed on respective surfaces of the base layer. An active material layer is disposed on at least one surface of the substrate. At least one incised portion of the first conductive layer, resulting from incision of a portion of the first conductive layer that penetrates the base layer, is combined to the second conductive layer.

METHOD OF HEAT-PRESSING ELECTRODE ASSEMBLY, AND SECONDARY BATTERY AND MANUFACTURING METHOD THEREOF USING THE SAME

Resumen de: US2025300214A1

A method of heat-pressing a secondary battery electrode assembly includes: manufacturing an electrode assembly; inputting the electrode assembly into a flexible electrolyte bag containing an electrolyte; and heat pressing, from the outside of the electrolyte bag, the electrode assembly immersed in the electrolyte to bind electrode plates of the electrode assembly.

FLUORINATED ACETAL ELECTROLYTES FOR HIGH-VOLTAGE AND LOW-IMPEDANCE LITHIUM METAL BATTERIES

Resumen de: US2025300232A1

The present embodiments relate generally to electrolytes for energy storage devices and more particularly to a family of fluorinated acetal molecules as the solvent component for the electrolytes. The present embodiments are directed to electrolytes comprising one or more fluorinated acetal molecules as solvents, and one or more salts, wherein the salts are soluble in the solvents. The electrolytes can be formulated with or without any additional solvents, diluents, or additives. The fluorinated acetal molecules comprise molecular formula of R1-O-CH2-O-R2, wherein R1 and R2 are hydrocarbon, fluorocarbon, or hydrofluorocarbon chains. The products of some embodiments include di(2-fluoroethoxy)methane (F1DEM) and bis(2,2-difluoroethoxy)methane (F2DEM). The obtained electrolytes enable high Coulombic efficiency, quick stabilization of electrodes, good compatibility with high-voltage cathodes, fast ion transport, and low overpotential.

COMPOSITIONS AND METHODS FOR ELECTRODE FABRICATION

Resumen de: US2025300180A1

Provided are processes of making and using free-standing electrode films for electrodes by a dry process. The process for forming an electrode includes combining a processing additive and an active electrode material or fibrillizable binder to form an electrode precursor material, where the processing additive has a surface roughness and a porosity and intermixing the electrode precursor material. The electrode precursor material may then be combined with the fibrillizable binder or the active electrode material and the fibrillizable binder or the active electrode material is intermixed with the electrode precursor material to form an electrode film material. The electrode film material includes the processing additive, the fibrillizable binder and the active electrode material. The electrode film material may then be compressed into an electrode film for use in an electrode such as in an electrochemical cell.

Pulse Current Method of Enhancing the Functionality of a Battery

Resumen de: US2025300475A1

A method to enhance the functionality of a battery through the use of a pulsing apparatus. The pulsing apparatus configured to improve cell conditioning, maintain battery cells, and overall cell function through pulsing a selected current into and out of a battery. The pulsing selected to deliver a predetermined number of pulses to the battery. The pulses having a slew rate of at least 0.1 A/μs, a pulse width between 1 μs and 10 ms with a pulse rise time of at least 1 μs to alter a current of the battery. Preferably the predetermined number of pulses is between 100 pulses per second and 1 pulse per minute.

PROCESS FOR RAPID PARTICLE GROWTH OF SOLID ELECTROLYTE MATERIAL

Resumen de: US2025300222A1

Methods for increasing the particle size of solid electrolyte materials include combining the solid electrolyte material with molten elemental sulfur. By combining the solid electrolyte material with molten elemental sulfur, the particle size of the solid electrolyte material increases and the specific surface area of the solid electrolyte material decreases.

ION-CONDUCTIVE POLYMER, AND LITHIUM SECONDARY BATTERY ELECTRODE AND LITHIUM SECONDARY BATTERY WHICH COMPRISE SAME

Resumen de: US2025300179A1

The present disclosure relates to an ion-conductive polymer, an electrode including the same, and a lithium secondary battery including the electrode. The ion-conductive polymer includes a first monomer represented by Formula 1 below.In Formula 1, A, L1 to L2, L11, a1 to a2, a11, R1 to R3, and n1 to n2 are as defined in the detailed description.

LIQUID COOLING ASSEMBLY

Resumen de: US2025301600A1

A liquid cooling assembly thermally coupled to multiple heat sources, includes a first heat dissipation assembly including a first base having a first thermal contact surface and a first inner surface positioned opposite to one another, the first thermal contact surface is thermally coupled to one of the heat sources, and a plurality of first fins protrude from the first inner surface, a second heat dissipation assembly including a second base have a second thermal contact surface and a second inner surface positioned opposite to one another, the first thermal contact surface is thermally coupled to one of the heat sources, the first inner surface and the second inner surface are facing toward to each other, and a plurality of second fins protrude from the second inner surface, and a splitter disposed between the first and the second heat dissipation assembly, ends of the first fins and the second fins are connected to the splitter.

CHARGING CONTROL METHOD AND APPARATUS FOR BATTERY

Resumen de: US2025300479A1

Provided is a charging control method. The charging control method may include determining a charging completion voltage of constant current charging or constant power charging as a first value based on a target charging energy of a battery, before a voltage value of the battery reaches the first value during the constant current charging or the constant power charging, determining whether a time point at which the voltage value of the battery reaches the first value is predicted to be near a local minimum point of a voltage rise rate of the battery, and maintaining or changing the charging completion voltage based on a result of determining whether the time point at which the voltage value of the battery reaches the first value is predicted to be near the local minimum point of the voltage rise rate of the battery.

CHARGING OR DISCHARGING CONTROL CIRCUIT AND BATTERY DEVICE

Resumen de: US2025300481A1

A charging or discharging control circuit includes a constant current source that flows a detection current, multiple voltage detection circuits connected in parallel to each of multiple secondary batteries, and a control circuit that receives outputs of the voltage detection circuits. The voltage detection circuit includes a voltage dividing circuit that outputs a divided voltage based on an input voltage between a positive input port and a negative input port, a reference voltage source that outputs a reference voltage, a first comparator circuit that receives and compares the divided voltage and the reference voltage, a second comparator circuit that receives and compares potentials of the positive input port and the negative input port, and switches that block an input voltage to the first comparator circuit. The control circuit, in response to the intermediate terminal being detached, blocks the input voltage to the first comparator circuit.

CARBON DIOXIDE PROCESS APPARATUS, CARBON DIOXIDE PROCESS METHOD, AND MANUFACTURING METHOD OF CARBON COMPOUND

Resumen de: US2025296047A1

A carbon dioxide process apparatus includes: a recovery device that includes a carbon dioxide absorption portion which dissolves carbon dioxide in an electrolytic solution of a strong alkali and absorbs the carbon dioxide; an electrochemical reaction device to which the electrolytic solution in which the carbon dioxide is dissolved by the carbon dioxide absorption portion is supplied and which electrochemically reduces the carbon dioxide; an anion exchange type fuel cell that supplies electric energy to the electrochemical reaction device; a carbon dioxide concentration gas supply passage that supplies a carbon dioxide concentration gas generated by the fuel cell to the electrolytic solution which is discharged from the recovery device and before being supplied to the electrochemical reaction device; and a hydrogen supply passage that supplies hydrogen generated by the electrochemical reaction device to the fuel cell.

SECONDARY BATTERY AND BATTERY PACK

Resumen de: US2025300212A1

A secondary battery includes an electrode wound body, a positive electrode current collector plate, and a negative electrode current collector plate. The electrode wound body includes a stacked body wound along a longitudinal direction thereof. The positive and negative electrode current collector plates are opposed to each other with the electrode wound body interposed therebetween in a width direction orthogonal to the longitudinal direction. A negative electrode includes a negative electrode current collector and a negative electrode active material layer. The negative electrode includes a negative electrode covered region and a negative electrode exposed region. The negative electrode exposed region is joined to the negative electrode current collector plate. A distance between an edge of the negative electrode active material layer and the negative electrode current collector plate in the width direction decreases from a winding inner periphery side toward a winding outer periphery side of the electrode wound body.

SECONDARY BATTERY MANUFACTURING DEVICE AND SECONDARY BATTERY MANUFACTURING METHOD

Resumen de: US2025300211A1

A secondary battery manufacturing device according to various embodiments of the present disclosure may include: a holding device configured to elastically support an electrode assembly; an clastic member which is disposed on one side of the holding device to apply an elastic force to the holding device; and a first sensing member configured to detect an clastic force applied by the clastic member.

Negative Electrode Manufacturing Device for Secondary Battery

Resumen de: US2025300159A1

A negative electrode manufacturing device for a secondary battery includes a dual slot die and a coating roll. The dual slot die includes an upper block, a middle block, a lower block, a first slot, and a second slot. The first slot is a gap between the upper block and the middle block for discharging a first negative electrode slurry, and the second slot provided is a gap between the middle block and the lower block for discharging a second negative electrode slurry. The coating roll is disposed opposite the first and second slots and transfers the electrode sheet. The upper block, the middle block, and the lower block comprise an upper lip, a middle lip, and a lower lip forming an outlet at each front end and exhibit magnetism of the same polarity. A method of manufacturing using the same is also provided.

ALL-SOLID-STATE SECONDARY BATTERY

Resumen de: US2025300218A1

Provided is an all-solid-state secondary battery capable of developing good cycle characteristics even when used for a certain period at high temperatures of 150° C. and above. An all-solid-state secondary battery 1 with a solid electrolyte layer 2, a positive electrode layer 3, and a negative electrode layer 4 includes: a first current collector layer 5 provided on a principal surface of the positive electrode layer 2 located on a side thereof opposite to a side thereof where the solid electrolyte layer 2 is disposed; a second current collector layer 6 provided on a principal surface of the negative electrode layer 4 located on a side thereof opposite to a side thereof where the solid electrolyte layer 2 is disposed; and a sealing layer 7 provided between an outer peripheral edge 5a of the first current collector layer 5 and an outer peripheral edge 6a of the second current collector layer 6 to seal the positive electrode layer 3 and the negative electrode layer 4, wherein an internal space 8 enclosed by the first current collector layer 5, the second current collector layer 6, and the sealing layer 7 is vacuum.

A SLURRY, AN ELECTRODE, AND A METHOD FOR MANUFACTURING AN ELECTRODE FOR LITHIUM-ION BATTERIES

Resumen de: US2025300181A1

A slurry, an electrode, and a method for manufacturing an electrode for Lithium-ion batteries, wherein the electrode is a compound consisting in a water-based binder system and an electrochemically activatable compound with Li-metal oxides comprising Ni, wherein the Ni amount in Metal (LiMeO2) is at least 80% wt, and wherein the pH value in the slurry is adjusted to be between 9 to 10.5.

IMMERSION-TYPE LIQUID-COOLED ENERGY STORAGE BATTERY PACK

Resumen de: WO2025195086A1

The present application provides an immersion-type liquid-cooled energy storage battery pack. The immersion-type liquid-cooled energy storage battery pack comprises an enclosure structure (300), a first liquid-cooling plate (100) and a second liquid-cooling plate (200), wherein the enclosure structure (300) has an accommodating space (330) for accommodating a battery (2000), and two ends of the accommodating space (330) in a first direction are provided with openings; the first liquid-cooling plate (100) and the second liquid-cooling plate (200) block the openings respectively; the first liquid-cooling plate (100) has a first liquid-cooling flow channel (120) and a first liquid inlet (130) and a first liquid outlet (140) in communication with the first liquid-cooling flow channel (120), the first liquid outlet (140) being in communication with the accommodating space (330); and the second liquid-cooling plate (200) has a second liquid-cooling flow channel (220) and a second liquid inlet (230) and a second liquid outlet (240) in communication with the second liquid-cooling flow channel (220), the second liquid inlet (230) being in communication with the accommodating space (330). The immersion-type liquid-cooled energy storage battery pack is provided with a circulating immersion flow channel for circulating flow of an immersion liquid, wherein the circulating immersion flow channel comprises the first liquid inlet (130), the first liquid-cooling flow channel (120), the first

NICKEL-COBALT-MANGANESE PRECURSOR AND PREPARATION METHOD THEREFOR, AND NICKEL-COBALT-MANGANESE TERNARY POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR

Resumen de: WO2025194930A1

The present application relates to a nickel-cobalt-manganese precursor and a preparation method therefor, and a nickel-cobalt-manganese ternary positive electrode material and a preparation method therefor. The nickel-cobalt-manganese precursor has a molecular formula of NixCoyMn(1-x-y)(OH)2, wherein 0<x<1, 0<y<1, and x+y<1, and the nickel-cobalt-manganese precursor has an FWHM(001) of 0.459-0.493, and an FWHM(101) of 0.49-0.552. A nickel-cobalt-manganese ternary positive electrode material is prepared by using the nickel-cobalt-manganese precursor, and a D003 crystal plane of the nickel-cobalt-manganese ternary positive electrode material has a grain size of 80-115 nm, and a D104 crystal plane has a grain size of 40-55 nm. The nickel-cobalt-manganese ternary positive electrode material has both an excellent capacity and high-temperature cycling performance and is prepared at a relatively low temperature, so that the energy consumption cost is effectively reduced.

BATTERY UNIT AND BATTERY PACK

Resumen de: WO2025194874A1

Disclosed in the present application are a battery unit and a battery pack, which solve the technical problem in the prior art of unbalanced heat dissipation of the battery pack. The battery unit comprises a battery module with a housing, and a heat exchange tank, wherein a lower end of the battery module is arranged in the heat exchange tank, and a gap is provided between the housing and a tank wall and/or a bottom wall of the heat exchange tank; the housing is sealingly connected to the tank wall of the heat exchange tank, such that a heat exchange channel is formed between the housing and the heat exchange tank; and first medium through holes are provided in two opposite ends of the heat exchange tank, and a thermally conductive medium flows into the heat exchange channel through the first medium through hole in one end of the heat exchange tank and then flows out of the heat exchange channel through the first medium through hole in the other end of the heat exchange tank. The battery pack comprises at least one battery unit. In the present application, the overall temperature change of the battery module is more balanced, and the battery module and the heat exchange tank are modular, which are convenient for overhaul.

CHARGING CONTROL DEVICE, PORTABLE TERMINAL APPARATUS, CHARGING CONTROL METHOD, AND PROGRAM

Resumen de: US2025300473A1

In a charging control device 10, a processor 12 performs: calculating increase speed of storage degradation during a predetermined period on the basis of a first integrated amount and a second integrated amount, the first integrated amount being an integrated amount of the storage degradation of a battery 20 at a first point in time, the second integrated amount being the integrated amount of the storage degradation at a second point in time after the predetermined period has passed from the first point in time; predicting a third integrated amount that is the integrated amount of the storage degradation in a case where it is assumed that the calculated increase speed of the storage degradation is maintained until target operation time of the battery; predicting a second capacity retention rate on the basis of a first capacity retention rate, the third integrated amount, and the second integrated amount, the second capacity retention rate being a capacity retention rate of the battery at the target operation time, the first capacity retention rate being the capacity retention rate at the second point in time; and controlling the full-charging voltage value on the basis of the second capacity retention rate.

METHOD AND SYSTEM FOR DEACTIVATING SECONDARY BATTERIES

Nº publicación: US2025300472A1 25/09/2025

Solicitante:

SAMSUNG SDI CO LTD [KR]
Samsung SDI Co., Ltd

Resumen de: US2025300472A1

A method of deactivating a secondary battery includes setting discharge conditions for a secondary battery having a positive voltage, connecting a current or voltage adjustable power source to the secondary battery, and overdischarging the secondary battery to a voltage minimum point, which is a negative voltage, by adjusting at least one of current or voltage of the current or voltage adjustable power source based on the discharge conditions.