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POSITIVE ELECTRODE PLATE, ELECTRODE ASSEMBLY, BATTERY CELL, BATTERY, AND ELECTRICAL DEVICE

Resumen de: US2025329721A1

A positive electrode plate comprises at least two active material layers, wherein two adjacent active material layers respectively comprise a first positive electrode active material and a second positive electrode active material; and under the same test condition, the maximum shrinkage rate of the first positive electrode active material during charging and discharging is T1, the maximum shrinkage rate of the second positive electrode active material during charging and discharging is T2, and T1 and T2 satisfy the following relationship: T1−T2≥0.3%. Compared with a single-layer positive electrode active material layer formed by directly physically mixing the first positive electrode active material and the second positive electrode active material, when T1−T2 of the first positive electrode active material and the second positive electrode active material is ≥0.3%, the positive electrode plate is provided to include at least two positive electrode active material layers.

ELECTROLYTE FOR RECHARGEABLE LITHIUM BATTERY, ELECTROLYTE ADDITIVE AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME

Resumen de: US2025329785A1

An electrolyte, an electrolyte additive, and a rechargeable lithium battery are disclosed. The electrolyte includes a non-aqueous organic solvent, a lithium salt, and an additive represented by Chemical Formula 1. A detailed description of the Chemical Formula 1 of the additive is disclosed.

Non-Aqueous Electrolyte and Lithium Secondary Battery Including the Same

Resumen de: US2025329781A1

Provided are a non-aqueous electrolyte including a lithium salt, an organic solvent, and an additive, wherein the additive includes a compound represented by Formula 1 below and lithium difluoro(oxalato)borate (LiODFB), and the organic solvent includes ethylene carbonate (EC), propylene carbonate (PC), ethylene propionate (EP), and propyl propionate (PP):In Formula 1 above, n is an integer of 3 to 10.

BATTERY MANAGING APPARATUS AND METHOD THEREOF

Resumen de: US2025327874A1

A battery managing apparatus according to an embodiment of the present disclosure includes a profile acquisition unit configured to acquire a first profile for each of a plurality of batteries included in a battery pack; and a diagnosis unit configured to calculate a target ratio from each of the plurality of first profiles, calculate each target value as a diagnostic factor based on a plurality of calculated target ratios, generate a distribution profile indicating a correspondence relationship between a plurality of calculated target values and the number of each of the plurality of target values, determine whether the distribution profile satisfies a predetermined condition, and diagnose a state of the battery pack according to a determination result.

ELECTRIC VEHICLE BATTERY LEAK DETECTOR

Resumen de: US2025327713A1

An electric vehicle battery test vessel, includes a first housing portion configured to securely receive a battery of an electric vehicle, wherein the battery in contained in a sealed battery casing. A second housing portion is arranged to seal the storage battery in the first housing portion, and selectively open whereby the battery can be removed from or placed into the first housing portion. A sealing mechanism is configured to seal the first housing portion to the second housing portion;. A differential pressure source is arranged to create a pressure differential between an external pressure on an exterior of the battery casing and an internal pressure on an interior of the storage battery casing. A pressure sensor measures at least one of the external and internal pressures and monitors for pressure changes indicative of a leak in the battery casing.

GAS ANALYSIS DEVICE

Resumen de: US2025327827A1

Gas analysis devices are provided. The present disclosure relates to a gas analysis device and provides a gas analysis device in which gases individually generated from a plurality of batteries to be analyzed can be collected and analyzed in an automated system.

Battery Diagnostic Device and Method

Resumen de: US2025327866A1

A battery diagnosis apparatus located within a battery system may include at least one processor; and a memory configured to store at least one instruction executed by the at least one processor. The at least one instruction may include diagnosing whether a battery is abnormal based on at least one battery state value during a process of charging and discharging the battery; generating a first diagnosis result when an abnormality occurs in the battery; verifying validity of the first diagnosis result based on whether a door provided on a container accommodating the battery is opened or closed; and outputting the first diagnosis result as a final diagnosis result when the first diagnosis result is determined to be valid.

BATTERY PACK AND MODULE HEALTH STATUS CHECK FOLLOWING AN IMPACT EVENT

Resumen de: US2025327872A1

A vehicle includes a system for diagnosing a health of a battery unit of a vehicle. The battery unit can be a battery pack of the vehicle or a battery module of the battery pack. A vehicle dynamics sensor measures vehicle dynamics data for the vehicle during a time period in which an impact event occurs at the vehicle. An accelerometer obtains a battery unit acceleration data for the battery unit during the period. A processor determines an inertial load on the battery unit from the vehicle dynamics data and the battery unit acceleration data, compares the inertial load to a threshold determined using a virtual model of the battery unit to determine a health status of the battery unit, and performs a remedial action for the battery unit based on the health status.

POWER STORAGE AMOUNT ESTIMATING DEVICE

Resumen de: US2025327868A1

A change in temperature during charging or discharging of the secondary battery is acquired, it is determined whether or not the change rate of the temperature change has varied, and when it is determined that the change rate of the temperature change has varied, it is estimated that the power storage amount of the secondary battery becomes a predetermined power storage amount.

POSITIVE ELECTRODE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, POSITIVE ELECTRODE CONTAINING THE SAME, AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME

Resumen de: US2025329730A1

A positive electrode active material for a rechargeable lithium battery, a positive electrode containing the same, and a rechargeable lithium battery including the same are disclosed. A positive electrode active material includes a first particle containing a compound represented by Formula 1 and having a first average particle diameter:where, in Formula 1, 0.8≤a≤1.2, 0.79≤x≤0.9, 0.1≤y≤0.2, 0.001≤z≤0.05, 0≤b≤0.05, and 0.995≤x+y+z≤1.01.

BATTERY HYBRID POWER SUPPLY METHOD, APPARATUS, TERMINAL DEVICE, AND STORAGE MEDIUM

Resumen de: US2025329806A1

A battery hybrid power supply method, apparatus, terminal device, and storage medium. The battery hybrid power supply method includes: acquiring a target voltage range, and cell open-circuit voltage ranges of at least two types of batteries; calculating, based on the cell open-circuit voltage ranges of the at least two types of batteries, a quantity of the at least two types of batteries matching the target voltage range; the quantity of the at least two types of batteries is configured to construct a hybrid battery pack.

COVER PLATE ASSEMBLY AND SINGLE-CELL BATTERY COMPRISING SAME

Resumen de: US2025329904A1

A cover plate assembly and a single-cell battery comprising the same are provided. The cover plate assembly includes: a cover plate body provided with a penetrating liquid injection hole in a thickness direction of the cover plate body; and an insulating member including a first channel communicating with the liquid injection hole and a second channel communicating with the first channel. By arranging the second channel communicating with the first channel, electrolyte flows into an inner portion of the single-cell battery through liquid outlets of different channels, and a liquid injection process is thereby accelerated.

CYLINDRICAL BATTERY AND ELECTRONIC DEVICE

Resumen de: US2025329901A1

A cylindrical battery includes a jelly-roll delectrode assembly with a positive electrode plate. The positive electrode plate includes a current collector, a positive active material layer, and an insulation layer. Both the positive active material layer and the insulation layer are disposed on at least one side of the positive current collector. The positive current collector includes a first region corresponding to the positive active material layer, a second region corresponding to the insulation layer, and a third region covered by neither the positive active material layer nor the insulation layer. The second region is located between the first region and the third region in a width direction of the positive current collector. The insulation layer includes a first part possessing a first width W1 and a second part possessing a second width W2, satisfying: W1+2 mm≤W2≤W1+10 mm.

WINDING DEVICE, WINDING SYSTEM, AND WINDING METHOD

Resumen de: US2025329769A1

The present application discloses a winding device, a winding system, and a winding method. The winding device includes a winding needle and a first push rod. A first needle body and a second needle body form a first hole at a first end, at least part of the first hole is a first adjusting hole section, and a radial dimension of the first adjusting hole section is gradually reduced in a direction close to a second end. The first push rod is inserted into the first hole and capable of reciprocating in an axial direction of the winding needle, and the first push rod has a first adjusting section matched with the first adjusting hole section.

BATTERY BREAKER COMPRISING AUTOMATED FEEDING SYSTEM

Resumen de: US2025327147A1

Disclosed are solutions for automatically feeding macro-batches of lithium-ion batteries (LIBs) as feedstock into a battery breaker at controlled intervals and/or with a controlled flow rate to achieve more efficient and less-problematic breaking. This automatic feeding is achieved through the utilization of a specially-designed feeding system that overcomes the challenges that heretofore have necessitated manual feeding for LIB breaking, said feeding system featuring an automated hopper system, a cooling system, or both. The hopper system may be further augmented with a vibration-inducing motor, and/or the hopper system may further comprise channels through which coolant from the cooling system may pass.

HEAT DISSIPATION COMPOSITION AND METHOD OF MANUFACTURING BUSBAR ASSEMBLY USING THE SAME

Resumen de: US2025326943A1

A heat dissipation composition for busbars is disclosed. The heat dissipation composition includes a base resin and a phase change material, wherein a weight ratio of the base resin to the phase change material is from about 2.8:1 to about 1.3:1.

INORGANIC THERMAL BARRIER COATINGS

Resumen de: US2025326937A1

Inorganic thermal barrier coatings and articles containing the coatings that can be used as impact resistant thermal barriers in high temperature applications. The coatings comprises a filler, an alkali silicate and a hardener, where the filler comprises calcium silicate, zirconium silicate, calcium phosphate, or combinations thereof. Articles containing the coatings can be made by mixing together the filler, the alkali silicate and the hardener to form a coating solution, applying the coating solution to at least a first major surface of a substrate, and hardening the coating solution by drying and curing the coating solution.

ULTRA-HIGH STRUCTURE AND HIGH SPECIFIC SURFACE AREA CARBON BLACK BASED ON HIGH CRYSTALLINITY AND PREPARATION METHOD THEREOF, ELECTRODE SLURRY, AND BATTERY

Resumen de: US2025326935A1

Provided is an ultra-high structure and high specific surface area carbon black based on high crystallinity and a preparation method thereof, an electrode slurry, and a battery. The ultra-high structure and high specific surface area carbon black based on high crystallinity satisfies the following characteristics: (1) the degree of crystallinity is equal to or more than 39%; (2) the BET specific surface area ranges from 200 m2/g to 763 m2/g; (3) the OAN ranges from 334 mL/100g to 548 mL/100g; and (4) the average particle diameter of primary particles is equal to or less than 35 nm.

Heat Exchanger

Resumen de: US2025327626A1

The present disclosure provides a heat exchanger. The heat exchanger includes a first heat exchange body and a second heat exchange body which are configured to transfer heat, the first heat exchange body and the second heat exchange body are connected with each other, and a connecting gap being provided between the first heat exchange body and the second heat exchange body; and a first baffle and a second baffle, the first baffle and the second baffle are respectively located on two opposite sides of the first heat exchange body and the second heat exchange body, the first baffle and the second baffle being oppositely arranged, and the connecting gap being located between the first baffle and the second baffle.

BATTERY MODULE AND METHOD OF MANUFACTURING THE SAME

Resumen de: US2025329819A1

A battery module includes battery cells; and a frame including a bottom member, side walls, and at least two top flap portions, which form a space for accommodating the battery cells, wherein at least two side walls are bent and extended from the bottom member, wherein the at least two top flap portions are bent and extended from the at least two side walls to extend towards each other, wherein the at least two side walls, the at least two top flap portions, and the bottom member are formed by a plate including a first metal sheet on an inner side of the plate and a second metal sheet on an outer side of the plate, and wherein the plate further includes at least one cooling channel in at least one of the at least two side walls.

POSITIVE ELECTRODE SHEET, METHOD FOR PREPARING THE SAME, AND APPLICATION OF THE SAME

Resumen de: US2025329719A1

A positive electrode sheet, a method for preparing the positive electrode sheet, and an application of the positive electrode sheet are provided. The positive electrode sheet includes a current collector and an electrode layer arranged on at least one side of the current collector. The electrode layer includes at least a first active material layer and a second active material layer which are arranged in a stacked manner. The first active material layer is in direct contact with a surface of the current collector. An active material in the first active material layer includes a layered oxide positive electrode material, and an active material in the second active material layer includes a manganese-based positive electrode material.

ANODE MATERIAL AND BATTERY

Resumen de: US2025329713A1

An anode material and a battery. The anode material includes graphite, an interior and/or a surface of the graphite has pores, a pore volume of the anode material is V (cm3/kg), a specific surface area is S (m2/g), a tap density is T (g/cc), wherein, 2≤V*S/T≤10. By constructing the ratio relationship of the specific surface area of the anode material, the pore volume and the tap density of the anode material, the overall distribution condition of defects such as pore pathways, crystal lattices and micro cracks in the graphite particles can be reflected. Within the limited range, when the anode material is made into an electrode to be applied to a battery, the defect distribution in the anode material is uniform.

BATTERY

Resumen de: US2025329786A1

A battery includes a negative electrode plate and an electrolyte solution; the negative electrode plate includes a negative electrode active material layer, which includes a silicon-based material, and based on a total weight of the negative electrode active material layer, silicon content is A; a surface of the negative electrode active material layer has recesses; the electrolyte solution includes 1,3-propene sultone, a mass percentage of 1,3-propene sultone in a total mass of the electrolyte solution is E; and A, a depth of the recesses B, a width of the recesses C, a spacing of the recesses D, and E satisfy 0.05≤C/(A×E×B×D)≤100. The battery not only exhibits high energy density but also significantly mitigates the problem of damage and corner cracking of the outer film casing in the later stages of battery cycling.

BATTERY CELL, BATTERY, AND ELECTRICAL DEVICE

Resumen de: US2025329884A1

The present application discloses a battery cell, a battery, and an electrical device. The battery cell includes a shell, an electrode assembly, and an insulating member. The electrode assembly is accommodated in the shell and includes electrode plates and a separator, which are arranged in a stacked manner. The insulating member is attached to an outer side of the electrode assembly, and the surface roughness of at least some regions of an outer surface of the insulating member away from the electrode assembly is greater than the surface roughness of the separator.

HOT MELT ADHESIVE FOR PROTECTING EDGE OF POLE PIECE, PREPARATION METHOD THEREOF AND PROTECTION METHOD THEREOF

Nº publicación: US2025326957A1 23/10/2025

Solicitante:

STEADYCHEM SHANGHAI CO LTD [CN]
STEADY NEW MAT SUZHOU CO LTD [CN]
STEADYCHEM (SHANGHAI) CO., LTD,
STEADY NEW MATERIAL (SUZHOU) CO., LTD

Resumen de: US2025326957A1

Disclosed are a hot melt adhesive for pole piece edge protection, a preparation method thereof and a protection method thereof, the hot melt adhesive includes 30-60% of polyolefin resin, 20-40% of tackifying resin, 5%-25% of wax, 2-10% of mineral oil and 0-20% of functional filler, the polyolefin resin is compounded by a first polyolefin group and a second polyolefin group in a mass ratio of (2-8):1; the first polyolefin group includes modified polypropylene with a density lower than 0.9 g/cm3 and a melt flow rate of 4-10 g/10 min; the second polyolefin group includes at least one of polyethylene, a copolymer of ethylene and C4-C10 α-olefin, amorphous poly-α-olefin, acid or anhydride-modified polyolefin, and a polyolefin elastomer; and the hot melt adhesive has a softening point above 100° C., a melt viscosity below 5000 cps, and surface drying time less than 5 min.