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ASSEMBLY METHOD FOR SECONDARY BATTERY, SECONDARY BATTERY, BATTERY PACK, AND ELECTRONIC DEVICE

Resumen de: US20260074395A1

Disclosed are an assembly method for a secondary battery, a secondary battery, a battery pack and an electronic device, which can improve the stability of a welding structure of a current collector. The assembly method for the secondary battery includes the following steps: an assembly step, assembling a current collector and a terminal, so that a wall portion of the terminal abuts against the current collector; a welding step, irradiating a laser spot on the wall portion, and moving the laser spot along a helical trajectory, welding the wall portion and the current collector to form a weld mark, wherein, on a cross-section passing through a terminal axis, the weld mark extends from a first end to a second end, the first end is located on a surface of the wall portion facing away from the current collector, and the second end is located inside the current collector.

POLE, COVER PLATE ASSEMBLY AND BATTERY CELL

Resumen de: US20260074393A1

The present disclosure provides a pole, a cover plate assembly, and a battery cell. The pole includes a first metal part and a second metal part. The first metal part has a first inward part and a first outward part that is disposed on an inner wall of the first inward part. The second metal part includes a main body and a second outward part. A second inward part is disposed on an outer peripheral surface of the second outward part. The second outward part is embedded into the first inward part, and the first outward part is embedded into the second inward part. A side of the second inward part away from a bottom wall of the first inward part is represented as a first surface. And a gap is only disposed between the first outward part and the first surface.

BATTERY PACK CASE AND BATTERY PACK INCLUDING THE SAME

Resumen de: US20260074364A1

A battery pack case according to an embodiment of the present disclosure includes: a base plate, a side plate disposed along a circumference of the base plate and having a lower side connected to the base plate, a cover plate covering an upper side of the side plate and define an accommodation space above the base plate, a partition plate disposed in the accommodation space to partition the accommodation space into a plurality of spaces, and a top plate forming a flow path together with the cover plate and disposed above the cover plate.

SEPARATOR FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME

Resumen de: US20260074371A1

The present disclosure relates to a separator for a rechargeable lithium battery, and a rechargeable lithium battery including the separator. The separator for a rechargeable lithium battery includes a porous substrate, and a coating layer located on at least one surface of the porous substrate.

ELECTRODE SLURRY STORAGE APPARATUS FOR SECONDARY BATTERY

Resumen de: US20260070003A1

Provided is an electrode slurry storage apparatus for a secondary battery, the apparatus comprising: a slurry storage tank storing an electrode slurry for a secondary battery; a degassing blade accommodated inside the slurry storage tank; and a negative pressure pump which is connected to the slurry storage tank and puts the inside of the slurry storage tank into a negative pressure state, wherein the degassing blade physically strikes air bubbles in the upper part of the slurry storage tank.

ULTRASONIC WELDING APPARATUS AND ULTRASONIC WELDING METHOD

Resumen de: US20260070149A1

An ultrasonic welding method including arranging a pressing force measuring anvil including a pressing force measuring sensor under a horn, moving the horn downward, pressing the pressing force measuring anvil, and measuring a pressing force of the horn using the pressing force measuring sensor, comparing the measured pressing force of the horn with a preset pressing force range and controlling a down stroke of the horn so that the pressing force of the horn is within the preset pressing force range, changing the pressing force measuring anvil with a welding anvil and positioning the welding anvil under the horn after the down stroke of the horn is adjusted, supporting welding target members on the welding anvil, and moving the horn by the adjusted down stroke and ultrasonically welding the welding target members on the welding anvil.

BATTERY CELL, BATTERY APPARATUS AND ELECTRICAL APPARATUS

Resumen de: WO2026050900A1

A battery cell (5), a battery apparatus and an electrical apparatus. In the battery cell (5), a positive electrode active material comprises lithium-containing phosphate having an olivine structure; the average particle size Dv50 of a negative electrode active material is 8 um to 15 um, and the negative electrode active material comprises graphite; a negative electrode current collector comprises a negative electrode current collecting portion (112a) and at least two negative electrode tabs provided on the same side of the negative electrode current collecting portion (112a), the negative electrode tabs extending from the negative electrode current collecting portion (112a) in a first direction (F1), the distance between the center lines (L) of any two adjacent negative electrode tabs being 10 mm to 350 mm, and the center line (L) being parallel to the first direction (F1).

MICROLAYER COEXTRUSION OF ELECTRICAL END PRODUCTS

Resumen de: US20260070301A1

A method and system for extruding multiple laminated flow streams using microlayer extrusion, and in particular to creating and forming products with electrical properties that are formed from layers and particles with dimensions in the micro to nanometer range.

LITHIUM SECONDARY BATTERY AND ELECTRICAL APPARATUS

Resumen de: US20260074288A1

A lithium secondary battery and an electrical apparatus. The lithium secondary battery includes a positive electrode plate and an electrolyte solution, where the positive electrode plate includes a positive electrode active material layer containing a positive electrode active material, and the positive electrode active material includes at least one doping element selected from aluminum, zirconium, boron, magnesium, zinc, calcium and titanium; the electrolyte solution includes a silane-based first additive containing C2-C8 alkenyl and a second additive, and the second additive is selected from at least one of lithium fluorosulfonate, lithium bis(fluorosulfonyl)imide and lithium tetrafluoroborate; and the ratio of the mass percentage content W1 of the first additive in the electrolyte solution to the mass percentage content W2 of the second additive in the electrolyte solution to the mass percentage content W3 of the doping element in the positive electrode active material satisfies 1:(0.2-2):(0.1-0.5).

ELECTROLYTE FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME

Resumen de: US20260074281A1

An electrolyte for a rechargeable lithium battery of exemplary embodiments includes: an organic solvent; a lithium salt; and a bisphosphate-based additive, thereby providing an electrolyte for a rechargeable lithium battery capable of imparting improved flame retardant characteristics and cell performance, for example, high-temperature storage characteristics and lifespan characteristics, and a rechargeable lithium battery including the same.

LITHIUM-ION BATTERY

Resumen de: US20260074283A1

Provided is a lithium-ion battery, comprising a positive electrode plate, a negative electrode plate and a non-aqueous electrolyte. The positive electrode plate comprises a positive electrode current collector and a positive electrode material layer arranged on the positive electrode current collector, and the positive electrode plate has a resistivity less than or equal to 1500 Ω·cm. The non-aqueous electrolyte comprises a non-aqueous organic solvent, a lithium salt and an additive; the additive comprises at least one cyclic sulfonic acid ester selected from 1,3-propane sultone, 1,4-butane sultone, 1,3-propylene sultone and methylene methane disulfonate; the lithium-ion battery meets the following requirements: 0.3≤m*d/f≤20, 70≤d≤150, 3≤f≤30 and 0.01≤m≤3. The lithium-ion battery forms a relatively stable interfacial film during formation, which is beneficial to improving the structural stability of the positive electrode active material, inhibiting the dissolution of metal ions, and avoiding the consumption and decomposition of non-aqueous electrolyte in the cycle process.

Non-Aqueous Electrolyte Solution for Lithium Secondary Battery and Lithium Secondary Battery Including the Same

Resumen de: US20260074282A1

Provided are a non-aqueous electrolyte solution for a lithium secondary battery and a lithium secondary battery including the same and having improved high-temperature storage characteristics and high-temperature cycle characteristics. Specifically, the non-aqueous electrolyte solution may comprise a lithium salt, an organic solvent and a compound represented by Formula 1 as a first additive:wherein Formula 1,Ar is a 5-membered or 6-membered nitrogen-containing ring,and R1 and R2 are each independently an alkyl group having 1 to 8 carbon atoms.

BATTERY PACK AND VEHICLE INCLUDING THE SAME

Resumen de: US20260074355A1

A battery pack according to the present disclosure includes: a battery assembly including a plurality of battery cells; a pack case in which an accommodation space is defined to accommodate the battery assembly; at least one first vent hole provided on a first side of the battery assembly; a vent space provided on the first side of the first vent hole and formed in the pack case; and a backflow preventing member having at least one opening/closing portion disposed to correspond to the first vent hole. The opening/closing portion is opened to allow communication between the first vent hole and the vent space when an internal pressure of the battery assembly reaches or exceeds a predetermined reference value.

HONEYCOMB-LIKE THERMAL INSULATION FOR BATTERY ARRAYS

Resumen de: US20260074351A1

A battery array insulating and separating structure for implementation with multiple lithium-ion cells is disclosed. Such an article is configured in a manner to permit the disposition of individual batteries in close proximity to one another while simultaneously being separated from any contact with an insulating material therebetween. The configuration is a honeycomb-like structure preventing any contact between batteries placed therein as well as protection from heat transfer from one battery to another therein. Such a separating/insulating article thus allows for safer utilization of multiple battery cells within a close-quarter array thereof, ostensibly preventing or at least significantly reducing the propensity of a single (or multiple) battery subject to a short or other damaging phenomenon from deleteriously affecting any other batteries within the array through such heat transfer possibilities. A method of utilizing such a unique honeycomb-like array with multiple separate battery cells simultaneously is also encompassed within this disclosure.

CONDUCTIVE STRUCTURE, COVER PLATE ASSEMBLY, AND BATTERY CELL

Resumen de: US20260074388A1

A conductive structure, a cover plate assembly, and a battery cell are provided. The conductive structure includes a metal post including a first end and a second end opposite to each other, and a metal layer bonded to a surface of the metal post. The metal layer wraps the first end and extends toward the second end. The metal layer is used to be connected to a tab. In an axial direction of the metal post, a distance from an end portion of the metal layer to an end surface of the second end is H1, a thickness of the metal post is D2, and a ratio of H1 to D2 is less than or equal to 0.8.

SYSTEMS AND METHODS FOR REGULATED BATTERY CHARGING

Resumen de: US20260074546A1

A charging system is provided. The charging system includes a charging device including an electrical input for receiving electrical energy, at least one output for outputting electrical energy, and a communication interface; and a charger controller programmed to a) receive a plurality of charging parameters; b) determine a charging rate of an electronic device connected to the at least one output of the charging device; c) instruct the charging device to provide electrical energy through the output to the electronic device; d) determine a current state of charge of the electronic device; e) adjust the charging rate based on the current state of charge and the plurality of charging parameters; and f) instruct the charging device to adjust the charging rate for the electrical energy being provided to the electronic device.

Electric energy storage device, power tool system and battery pack

Resumen de: US20260074349A1

An electric energy storage device which includes four energy units with a substantially same voltage value is provided. Each energy unit is provided with a positive electrode and a negative electrode. The electric energy storage device comprises a socket with eight independently arranged electrode terminals that are connected with the four energy units. The disclosure also provides an electric tool system using the electric energy storage device. The electric tool is provided with plugs that may be connected with the four energy units in different states, allowing the electric energy storage device to output multiple voltages.

Apparatus and Method for Molding Pouch

Resumen de: US20260070268A1

An apparatus for molding a pouch, which includes: a transfer device configured to transfer a pouch film; a molding device configured to press a top surface of the pouch film to mold an accommodation part for accommodating an electrode assembly; and an inspection device configured to calculate a depth value of the accommodation part formed in the pouch film to detect defects. The inspection device includes: a distance measuring member configured to measure a first measurement value and a second measurement value, and an inspection member configured to calculate a depth value of the accommodation part by subtracting the first measurement value from the second measurement value, wherein if the calculated depth value is within a set input value range, it is determined as normal, and if the calculated depth value is out of the set input value range, it is determined as defective.

METHOD OF MANUFACTURING ELECTRODE NOTCHING MOLD FOR SECONDARY BATTERY THROUGH GRINDING PROCESSING

Resumen de: US20260070249A1

A method of manufacturing a film notching mold for a secondary battery pouch includes processing each of an upper plate, a lower plate, a plurality of paired upper modules, a plurality of paired lower modules, a rounded press-fit plate, and an interference-fit portion in a polyhedral frame shape in the form of a metal plate; coupling each of the upper plate, the lower plate, the plurality of paired upper modules, the plurality of paired lower modules, the rounded press-fit plate, and the interference-fit portion by interference-fit; and performing linear driving-type pressing by forming a press-fit space.

BATTERY COLLECTION SYSTEMS AND METHODS OF USING THE SAME

Resumen de: US20260069903A1

The present disclosure relates to systems, non-transitory computer-readable media, and methods for collecting batteries and other devices for disposal or recycling. In particular, in one or more embodiments, the disclosed systems provide a battery collection bin comprising a transport drum within an enclosure and a removable cartridge or internal basin filled with fire suppressant. Also, in some embodiments, the disclosed systems detect deposit of a battery through a feed chute into the transport drum and determine, based on signals from one or more sensors, a fill level, volume, or weight of the transport drum. In response, embodiments of the disclosed systems utilize a dispensing system to dispense a measure of fire suppressant from the removable cartridge or internal basin into the transport drum to prevent unwanted thermal events. Additional mechanisms and related methods for streamlined and safe collection of batteries and other devices are disclosed.

Cold-hot Apparatus with Hidden Ring Pull

Resumen de: US20260069451A1

The present application relates to the field of medical care equipment, and in particular to a cold-hot apparatus with a hidden ring pull, wherein the cold-hot apparatus comprises a housing, a cold-hot assembly and a ring pull, wherein the housing is internally provided with the cold-hot assembly, and both sides of the housing are rotatably provided with the ring pull; the two sides of the housing are provided with fixing grooves corresponding to the ring pull, which are adapted thereto; the ring pull of the cold-hot apparatus is used for connecting with the strap to fix the cold-hot apparatus to the nursing part; through the rotatable arrangement of the ring pull, after the strap is bound, the angle of the adapted nursing part can be adjusted by rotating the ring pull, the ring pull can be received in the fixing groove to reduce the overall volume and facilitate carrying.

SOLID ELECTROLYTE MEMBRANE, METHOD FOR MANUFACTURING THE SAME, AND ALL-SOLID-STATE BATTERY COMPRISING THE SAME

Resumen de: US20260074279A1

Disclosed is a solid electrolyte membrane, a method for manufacturing the same, and an all-solid-state battery including the same. More specifically, the solid electrolyte membrane includes a first solid electrolyte layer including a first solid electrolyte and a first fibrous binder and a second solid electrolyte layer including a second solid electrolyte and a second fibrous binder, stacked adjacent to each other, wherein the weight of the first fibrous binder relative to the total weight of the first solid electrolyte layer is less than the weight of the second fibrous binder relative to the total weight of the second solid electrolyte layer. Since the weight of a first fibrous binder included in the first solid electrolyte layer is less than the weight of the second fibrous binder included in the second solid electrolyte layer, the strength may be improved without lowering the ionic conductivity of the solid electrolyte membrane.

NON-AQUEOUS ELECTROLYTE SOLUTION FOR LITHIUM ION SECONDARY BATTERY AND LITHIUM ION SECONDARY BATTERY

Resumen de: US20260074284A1

The non-aqueous electrolyte solution disclosed herein includes a supporting salt, a non-aqueous solvent and a compound having a triphenylmethane skeleton. The above-described compound includes a branched hydrocarbon group and a hydroxy group. The above-described branched hydrocarbon group exists on a phenyl group in the above-described triphenylmethane skeleton and has 3 or more carbon atoms. The above-described hydroxy group exists on the above-described phenyl group and is next to the above-described branched hydrocarbon group.

SOLID ELECTROLYTE LAYER FOR LITHIUM SECONDARY BATTERY AND METHOD FOR PRODUCING SAME

Resumen de: US20260074278A1

A solid electrolyte layer for a lithium secondary battery that suppresses the generation of internal short-circuit caused by a dendrite composed of lithium metal is provided. The solid electrolyte layer includes a plurality of particles of a first solid electrolyte and a second solid electrolyte coating a surface of the plurality of particles and filling in a space among the plurality of particles. The second solid electrolyte is a sulfide solid electrolyte or an oxide solid electrolyte.

ELECTROLYTE WITH DUAL FUNCTION SALT ADDITIVE

Nº publicación: US20260074276A1 12/03/2026

Solicitante:

LIONVOLT B V [NL]
LionVolt B.V

Resumen de: US20260074276A1

The present disclosure relates to an electrolyte product (1), formed as a solid or semi-solid layer, comprising a polymer-based matrix, having dispersed therein an amount of an electrolyte salt composition (4) and an amount of an additive salt composition (5). The disclosure further relates to a method of manufacturing a battery cell product, a battery cell product comprising the electrolyte product, and a battery product comprising a plurality of battery cell products.