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ELECTRODE SHEET MANUFACTURING APPARATUS

Resumen de: US2025372604A1

For an electrode sheet manufacturing apparatus, a pressure roll is disposed so as to hold an unformed portion of the electrode sheet between the pressure roll and a support roll, except for a portion of the electrode sheet on which an active material layer is formed. The pressure roll is a rubber roll at least an outer circumferential surface of which is made of a rubber. The rubber satisfies the following expression: y1≥y2>0.8×y1, where y1 is the modulus of longitudinal elasticity of the rubber at 25° C. and y2 is the modulus of longitudinal elasticity of the rubber at 60° C.

METHOD FOR PRODUCING SULFIDE SOLID ELECTROLYTE COMPOSITE, SULFIDE SOLID ELECTROLYTE COMPOSITE, AND METHOD FOR PRODUCING COMPOSITE POWDER

Resumen de: US2025372703A1

A method for producing a sulfide solid electrolyte composite includes: adding a metal compound to a solution containing at least one sulfide solid electrolyte raw material and dispersing the metal compound or a compound derived from the metal compound to obtain a metal dispersion liquid; removing a solvent of the metal dispersion liquid to obtain a composite powder of the metal compound or the compound derived from the metal compound and the sulfide solid electrolyte raw material; and obtaining the sulfide solid electrolyte composite using the composite powder.

METHOD FOR PRODUCING BIPOLAR ELECTRODE

Resumen de: US2025372594A1

A method for producing a bipolar electrode includes obtaining a bipolar electrode respectively having a positive electrode mixture layer and a negative electrode mixture layer at both surfaces of an electrode foil through: a positive electrode mixture coating step of coating a positive electrode mixture coating liquid on one surface of an electrode foil and drying the positive electrode mixture coating liquid, to form a positive electrode mixture coating film; a first pressing step of pressing the electrode foil having the positive electrode mixture coating film; a negative electrode mixture coating step of coating a negative electrode mixture coating liquid on another surface of the electrode foil by a screen printing method and drying the negative electrode mixture coating liquid, to form a negative electrode mixture coating film; and a second pressing step of pressing the electrode foil having the negative electrode mixture coating film.

ELECTRODE SHEET MANUFACTURING APPARATUS AND ELECTRODE SHEET MANUFACTURING METHOD

Resumen de: US2025372603A1

An electrode sheet manufacturing method includes a stepped roll pressing step of conveying an electrode sheet while pressing the electrode sheet onto a stepped roll that has a larger diameter at a part coming into contact with a boundary region of an uncoated portion with an active material layer than other parts coming into contact with other regions of the electrode sheet.

Non-Aqueous Electrolyte and Lithium Secondary Battery Using the Same

Resumen de: US2025372707A1

Provided is a non-aqueous electrolyte capable of inhibiting an increase in battery resistance when repeating charge/discharge cycles. The non-aqueous electrolyte includes a compound represented by the following Chemical Formula 1:wherein R1 represents a C3-C20 linear or branched alkylene group, and each of R2 to R5 independently represents a hydrogen atom, a halogen atom or a C1-C5 alkyl group.

OBTAINING STATE OF HEALTH AND STATE OF CHARGE OF A BATTERY

Resumen de: US2025370060A1

The present disclosure relates to a method for obtaining a state of health, SOH, and state of charge, SOC, of a battery. The method comprises obtaining real-time data of the battery, the real time data including voltage, current, temperature, initial SOC, and an initial SOH, obtaining battery parameters from a look up table, LUT, based on the real-time current, temperature, initial SOC, and an initial SOH and obtaining a new SOC and new SOH based on the battery parameters, real-time current, real-time voltage, initial SOC, and initial SOH. The disclosure further relates to a corresponding device, system and computer-readable storage medium.

PRE-AGING METHOD FOR PRE-AGING A BATTERY, AND TEST METHOD FOR TESTING SETS OF BATTERIES

Resumen de: US2025370056A1

The present invention relates to a pre-ageing method (10) and a pre-ageing system (20) for pre-ageing a battery (2) to a specified ageing condition, a test method (30) and a test system (40) for testing battery sets according to a specified test plan, as well as a computer program product.

BATTERY CAPACITY ESTIMATION METHOD, ELECTRONIC DEVICE AND STORAGE MEDIUM

Resumen de: US2025370049A1

A battery capacity estimation method, an electronic device and a storage medium are disclosed, which belong to the technical field of batteries. The method includes: calculating a hysteresis coefficient corresponding to a current estimation period and calculating a first temperature rise variation coefficient corresponding to the current estimation period according to the hysteresis coefficient, where the hysteresis coefficient represents a hysteresis relationship between an actual battery thermal power and an average battery thermal power per unit time; acquiring a first estimated temperature; updating the first estimated temperature according to the first temperature rise variation coefficient, the first estimated temperature and a sensing temperature; obtaining an estimated frozen capacity corresponding to the current estimation period according to the updated first estimated temperature and preset reference parameters; and determining an estimated capacity of a battery according to the estimated frozen capacity.

BATTERY INSPECTION APPARATUS AND METHOD, AND BATTERY PRODUCTION DEVICE

Resumen de: US2025369902A1

The battery inspection apparatus includes a bearing assembly, a pulsed ray source, a detector and a first drive assembly. The bearing assembly is configured to bear a battery under test and drive the battery under test to move along a first direction. The pulsed ray source is configured to emit a detection ray in a pulsed manner toward a to-be-inspected region of the battery. The detector is disposed opposite the pulsed ray source, where the two are located on two sides of the bearing assembly, respectively, and the detector receives the detection ray emitted by the pulsed ray source and penetrating the to-be-inspected region of the battery under test. The first drive assembly is connected to both the pulsed ray source and the detector and the first drive assembly is configured to drive the pulsed ray source and the detector to acquire detected images of the to-be-inspected region.

BATTERY DISCHARGE CONTROL DEVICE AND METHOD

Resumen de: US2025373044A1

The present disclosure relates to a battery discharge control device and method. The device includes a battery, a discharge current sampling unit, an MCU, a DC-DC voltage step-down unit, a battery protection board, an indicator light and a charging control unit. According to the present disclosure, the discharge current value, on-load voltage value and no-load voltage value of the battery are acquired by means of the MCU, the battery remaining capacity is calculated according to the above discharge current value, on-load voltage value and no-load voltage value, and finally, the output of the DC-DC voltage step-down unit is controlled according to the battery remaining capacity; and therefore, by adjusting the final power supply output of the device, the power supply output of the battery changes with the discharge trend of a lithium battery, electrical equipment can be enabled to obtain stable input, and the battery power can be accurately quantified.

BATTERY PACK ASSEMBLY AND MANUFACTURING METHOD THEREOF

Resumen de: US2025372762A1

A battery pack assembly and a manufacturing method thereof are disclosed. The battery pack assembly includes a cell cartridge assembly formed by stacking cartridge blocks and battery cells and includes an inlet duct coupled to the cell cartridge assembly to form a flow space therebetween. The flow space allows air introduced through a cooling air inlet to flow therethrough and distributes the air to cooling passages of the stacked cartridge blocks. The battery pack assembly further includes an outlet duct coupled to the cell cartridge assembly and configured to discharge the air therethrough, a blower configured to suction air, and a flow resistance member disposed on the bottom of the inlet duct and configured to partially block the air flowing along the flow space so that the air temporarily stays on the upstream side.

MONOMER FOR ELECTROLYTE, ELECTROLYTE FOR SECONDARY BATTERY INCLUDING THE SAME, METHOD OF PREPARING THE SAME AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME

Resumen de: US2025372730A1

A monomer for an electrolyte according to the embodiments of the present disclosure may include a compound represented by Formula 1. A lithium secondary battery according to the embodiments of the present disclosure includes a cathode, an anode, and an electrolyte, wherein the electrolyte may include a polymer of the compound represented by Formula 1.wherein X1, X2 and X3 are each independently a halogen element, R1, R2 and R3 are each independently hydrogen, a halogen element, a substituted or unsubstituted C1 to C6 alkyl group, or a polymerizable group, andat least one of R1, R2 or R3 is a polymerizable group.

Non-Aqueous Electrolyte and Lithium Secondary Battery Including the Same

Resumen de: US2025372714A1

The present disclosure provides a non-aqueous electrolyte and a lithium secondary battery including the same. The non-aqueous electrolyte of the present disclosure includes a lithium salt, an organic solvent, and an additive. The additive includes a cyclic borate-based compound so as to prevent the decomposition of the non-aqueous electrolyte of the lithium secondary battery in a high-power environment that could lead to negative electrode degradation, or to further improve low-temperature high-rate discharging characteristics, high-temperature stability, overcharging prevention, and high-temperature battery expansion suppression effects

DESIGN PRINCIPLE OF SOLID ELECTROLYTE FOR HIGH-VOLTAGE ALL-SOLID-STATE BATTERY AND UTILIZATION THEREOF

Resumen de: US2025372699A1

A solid electrolyte for an all-solid-state battery designed from a first principle-based calculation and represented by the following Chemical Formula 1 is provided: Chemical Formula 1 LinMCl6-xFx In Chemical Formula 1, M may be at least one trivalent metal among Al, Ga, In, Tl, Bi, Sc, Lu, Y, Yb, Tm, Er, Ho, Dy, Tb, Gd, Sm, Nd, and La, or at least one tetravalent metal among Ti, Zr, and Hf; n may have a value of 3 when M is a trivalent metal and have a value of 2 when M is a tetravalent metal; and x may have a value greater than 0 and less than or equal to 1.5.

SECONDARY BATTERY

Resumen de: US2025372843A1

A secondary battery includes an electrode assembly including a first electrode plate, a second electrode plate having a polarity different from the first electrode plate, and a separator between the first electrode plate and the second electrode plate, a case configured to accommodate the electrode assembly, and an adhesive member between the electrode assembly and the case, the adhesive member including a porous film.

ZINC SECONDARY BATTERY

Resumen de: US2025372725A1

There is provided a zinc secondary battery including a positive electrode plate including a positive electrode active material layer and a positive electrode current collector; a negative electrode plate including a negative electrode active material layer containing at least one selected from the group consisting of zinc, zinc oxide, a zinc alloy, and a zinc compound, and a negative electrode current collector; a hydroxide ion conductive separator that separates the positive electrode plate and the negative electrode plate so as to make hydroxide ions conductable; and an electrolytic solution. The electrolytic solution is an aqueous solution containing an alkali metal hydroxide including at least sodium hydroxide, and a total concentration of the alkali metal hydroxide in the electrolytic solution is from 5.0 to 6.0 mol/L, and a concentration of the sodium hydroxide in the electrolytic solution is from 0.5 to 6.0 mol/L.

ELECTRICITY STORAGE DEVICE

Resumen de: US2025372718A1

Provided is a technique to suppresses an increase in a resistance under a low temperature environment. The electricity storage device disclosed herein includes a positive electrode, a negative electrode, and a nonaqueous electrolytic solution. The negative electrode contains a silicon-containing graphite particle as the negative electrode active material, which is a graphite particle containing the silicon. The nonaqueous electrolytic solution contains EC, DMC, EMC, carboxylic acid ester whose carbon number is equal to or less than 4, and FEC, as the nonaqueous solvent. With a sum of the EC, the DMC, the EMC, and the carboxylic acid ester being 100 volume %, a volume of the carboxylic acid ester is 1 volume % to 30 volume %. A content amount of the FEC with respect to a whole of the nonaqueous solvent is 0.1 mass % to 5 mass %.

SECONDARY BATTERY

Resumen de: US2025372717A1

To provide an electrolyte solution capable of inhibiting ignition or the like and a secondary battery including the electrolyte solution. The secondary battery includes a positive electrode, a negative electrode, a separator between the positive electrode and the negative electrode, and an electrolyte solution. The electrolyte solution includes a mixed solvent and a lithium salt. In the electrolyte solution, a concentration of the lithium salt is higher than 1 mol per liter of the mixed solvent. The mixed solvent includes a fluorinated linear carbonate and a fluorinated cyclic carbonate. In a DSC measurement of the electrolyte solution, a peak of heat flow of a heat generation reaction in a range higher than or equal to 180° C. and lower than or equal to 300° C. is less than or equal to 200 mW/g.

SOLID-STATE BATTERY

Resumen de: US2025372729A1

This disclosure provides a solid-state battery that has a negative electrode layer, a protection layer, a solid electrolyte layer, and a positive electrode layer in this order and uses a deposition-dissolution reaction of metal lithium. The negative electrode layer includes a first metal element that is able to alloy with lithium. The protection layer includes a second metal element that is able to alloy with lithium. The first and the second metal elements are different elements; and, as seen in a sectional view of the solid-state battery along a thickness direction, the protection layer has a first protruded portion that is protruded outward beyond an end face of the negative electrode layer in a direction orthogonal to the thickness direction, and the solid electrolyte layer has a second protruded portion that is protruded outward beyond an end face of the protection layer in the direction orthogonal to the thickness direction.

SECONDARY BATTERY AND ELECTRONIC DEVICE

Resumen de: US2025372752A1

A secondary battery including an electrode assembly accommodated in a packaging bag. One end of an electrode terminal is electrically connected to the electrode assembly, and another end of the electrode terminal extends out of the packaging bag. A heating module includes an insulation layer and a body portion, a sealing portion, and an extension portion sequentially connected, the body portion is disposed in the electrode assembly or between the electrode assembly and the packaging bag, the sealing portion is disposed in the packaging bag, the extension portion is disposed outside the packaging bag, and the insulation layer entirely covers an outer surface of the body portion. A sealing layer is at least partially disposed on a surface of the sealing portion and hermetically connected to the packaging bag. In a thickness direction of the heating module, an overlapping region is present between the insulation layer and the sealing layer.

METHOD AND SYSTEM FOR DESULFATING LEAD-ACID BATTERIES, AND ELECTRIC MOTOR VEHICLE COMPRISING SUCH SYSTEM

Resumen de: US2025372732A1

A method and system for at least partially desulfating at least one lead-acid battery is described. A series of current pulses formed by positive current pulses alternating with negative current pulses are applied to the at least one battery. The alternating positive and negative current pulses are applied to the at least one lead-acid battery with a separating time between consecutives pulses that is below a predefined time.

BATTERY

Resumen de: US2025372712A1

A battery includes a positive electrode plate, a negative electrode plate, and an electrolyte solution. The negative electrode plate includes a negative electrode current collector including a copper foil and a negative electrode active material layer including a negative electrode active material which including a silicon-based active material, the electrolyte solution includes lithium bis(trifluoromethanesulfonyl)imide; and the battery satisfies following relationship: B−10A−C/10+3≥0; A is a grain size of copper foil, in a unit of m; B is a mess percentage of lithium bis(trifluoromethanesulfonyl)imide in the electrolyte solution, in a unit of wt %; C is a mass percentage of the silicon-based active material in the negative electrode active material, in a unit of wt %, and C≤50. The battery may significantly alleviate silicon negative electrode expansion while enhance the kinetic performance and cycling stability of the battery under room-temperature.

COATING, BATTERY, AND ELECTRICITY-CONSUMPTION DEVICE

Resumen de: US2025372756A1

The present disclosure relates to the technical field of coatings, and specifically discloses a coating, a battery, and an electricity-consumption device. A total heat release of the coating in a first temperature range and a second temperature range ranges from 30 J/mg to 60 J/mg. The first temperature range is from 120° C. to 220° C. The second temperature range is from 220° C. to 270° C.

Method for Producing an Electrical Accumulator, and Apparatus for Producing an Electrical Accumulator

Resumen de: US2025372758A1

A method for producing an electrical accumulator includes the steps of: providing a cooling element which extends along a longitudinal axis and has a first side face and a second side face; applying adhesive onto the first side face; arranging at least one energy-storage cell on the first side face while, particularly interlockingly, supporting the cooling element from the second side face.

Composite Solid Electrolyte and All-Solid-State Battery Comprising the Same

Nº publicación: US2025372698A1 04/12/2025

Solicitante:

LG CHEM LTD [KR]
LG Chem, Ltd

Resumen de: US2025372698A1

A composite solid electrolyte includes sulfide-based solid electrolyte particles, and a polymer coating layer formed on the sulfide-based solid electrolyte particles, wherein the polymer coating layer includes a polymer having a Mooney viscosity (ML1+4, 100° C.) of from 30 to 110. An all-solid-state battery including the composite solid electrolyte is also provided.