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SEPARATOR FOR SEALED LEAD-ACID BATTERY

Resumen de: US20260221596A1

Problem The invention has been made by focusing on the fact that a conventional separator with a specified fiber distribution or fiber orientation was unable to sufficiently control the gas absorption reaction, which is one of the basic functions of a sealed lead-acid battery, and, in order to control the gas permeation ability itself of the separator, the invention makes it possible to provide an optimum separator which can reduce the amount of adjustment of the electrolyte concentration (specific gravity) after chemical conversion in a container of a sealed lead-acid battery, and can prevent abnormal heat generation of the battery in an actual battery use environment.Solution Preparation is performed so that the gas permeation rate in a wet state of a separator is 15 mm/min or less, and/or the gas permeability in a wet state of the separator is 70% or less.

Electrode, Secondary Battery Comprising the Same, and Method for Manufacturing the Same

Resumen de: US20260221413A1

An electrode, a secondary battery including the same and an energy storage system are provided. The electrode includes an electrode current collector and an electrode layer disposed on the electrode current collector. The electrode layer includes an active material, a conductive material, and a binder. The binder includes a fluorine-based polymer and a modified polyolefin. The fluorine-based polymer is polytetrafluoroethylene (PTFE), the modified polyolefin includes a carboxylic acid anhydride derived functional group, and an amount of the modified polyolefin ranges from 2 to 40 parts by weight based on 100 parts by weight of the binder.

YOLK-SHELL-STRUCTURED SILICON-CARBON COMPOSITE, PREPARATION METHOD THEREFOR, AND ANODE ACTIVE MATERIAL COMPRISING SAME

Resumen de: US20260217544A1

The present invention relates to a yolk-shell-structured silicon-carbon composite, a preparation method therefor, and an anode active material comprising same. The yolk-shell-structured silicon-carbon composite according to an embodiment of the present invention can be prepared without using strong acids, and can have uniform voids formed using, as a sacrificial layer, an inorganic layer with uniform thickness so as to accommodate, when used as an anode active material, silicon volume expansion, and thus can suppress peeling off, caused thereby, of the outermost carbon thin film. As a result, deterioration in battery performance and lifespan can be suppressed.

LAMINATE

Resumen de: US20260217006A1

0000 The present invention provides a laminate that excels in elasticity as well as in both heat shielding performance and flame shielding performance in combustion and, in particular, is capable of blocking heat and flame transfer to adjacent battery cells to prevent chain explosion in the event of ignition or thermal runaway, when it is used as an inter-cell member for in-vehicle batteries. The laminate of the present invention includes an A layer including a resin and a fiber and a B layer, the laminate including a total of three or more layers of the A layer and the B layer, the laminate having no flame penetration in two-minute exposure to burner flame and being rated as V-0 or greater in a UL94 burning test.

COMPOSITION FOR NONAQUEOUS ELECTROLYTE BATTERY ELECTRODES AND ADDITIVE FOR NONAQUEOUS ELECTROLYTE BATTERY ELECTRODES

Resumen de: US20260221451A1

An object of the present invention to provide a composition for nonaqueous electrolyte battery electrodes capable of achieving both good coatability of the composition and the suppression of expansion of electrodes obtained from the composition and an additive for nonaqueous electrolyte battery electrodes. The present invention relates to a composition for nonaqueous electrolyte battery electrodes including a binder; and an organic fiber, wherein the organic fiber has a specific gravity of 1.00 or more and a fiber length of 0.1 mm or more and 10 mm or less.

BATTERY AND ELECTRICAL DEVICE

Resumen de: US20260221561A1

A battery includes a metal housing, a battery cell, an electrically conductive column and an abutting member, the battery cell being accommodated in the metal housing, the battery cell comprising a battery cell body, a first tab and a second tab, a first end of the electrically conductive column being conductively connected to the first tab, a second end of the electrically conductive column being located outside the metal housing, the second tab having a tab protrusion protruding from the battery cell body, and the abutting member being accommodated in the metal housing and used to press the tab protrusion against an inner surface of the metal housing such that the tab protrusion is in conductive contact with the metal housing.

BATTERY AND ELECTRIC DEVICE

Resumen de: US20260221585A1

0000 A battery includes a battery case, a battery cell, an elastic sealing member and a conductive pillar. The battery case and the elastic sealing member are connected and define an accommodating cavity, and the battery cell is arranged in the accommodating cavity. A through hole which extends in a first direction and is used for communicating the outside with the accommodating cavity is formed in the elastic sealing member, with one end of the conductive pillar passing through the through hole and being electrically connected to the battery cell, and the other end of the conductive pillar protruding out of the elastic sealing member. A pressure relief portion is arranged on the elastic sealing member, and the pressure relief portion is configured to rupture when the pressure in the accommodating cavity is greater than a pressure relief threshold, so as to release the pressure in the battery.

WINDING CORE CENTRAL PIN AND BATTERY

Resumen de: US20260221523A1

A winding core central pin is provided and includes a support rod and a plurality of support ribs. The support rod is cylindrical. The plurality of support ribs is arranged along a circumferential direction of an outer wall of the support rod and have an equal inclination angle with respect to the outer wall of the support rod. The plurality of support ribs is configured to abut against an inner wall of a center hole of a winding core. An avoidance space is defined between every two adjacent support ribs of the plurality of support ribs to allow an electrolyte to flow through the avoidance space.

BATTERY PACK

Resumen de: US20260221575A1

0000 A battery pack for powering a power tool. The battery pack includes a modular construction to enable improved manufacturability and scalability. The battery pack incorporates a set of modular battery cell holders. The battery pack incorporates a set of battery straps to electrically connect adjacent modular cell holders. The battery pack incorporates a set of connectors and the set of battery straps to electrically and mechanically connect the set of modular battery cell holders to a printed circuit board.

Apparatus and Method for Sealing Pouch-Shaped Battery Case

Resumen de: US20260221547A1

0000 An apparatus and method for sealing a pouch-shaped battery case. More particularly, an apparatus for sealing a pouch-shaped battery case that includes a first case and a second case in which an electrode assembly is received. The apparatus includes a non-contact heating member located above or under a sealed portion at which the first case and the second case overlap each other. The non-contact heating member is configured to heat the sealed portion to a predetermined temperature such that the sealed portion can be thermally fused.

System for Analyzing Foreign Substance in Positive Electrode Material and Method for Analyzing Foreign Substance in Positive Electrode Material

Resumen de: US20260219200A1

A system for analyzing foreign substances in a positive electrode material, includes a pretreatment part configured to prepare a monolayer sample of a positive electrode material powder, a measurement part configured to obtain an optical image of the monolayer sample using an optical microscope, and an analysis part configured to analyze the optical image of the monolayer sample and obtain information on foreign substances in the positive electrode material. Also provided is a method for analyzing metallic foreign substances in a positive electrode material.

LITHIUM IRON PHOSPHATE CATHODE MATERIAL AND PREPARATION METHOD THEREFOR, AND LITHIUM-ION BATTERY

Resumen de: US20260221448A1

A lithium iron phosphate cathode material includes a matrix and a carbon coating layer coated on a surface of the matrix. A crystal structure factor A of the lithium iron phosphate cathode material satisfies 4.600 Å−4≤A≤9.500 Å−4. The calculation formula of the crystal structure factor A is:A=C×105D⁡(0⁢1⁢0)×V;wherein C is a crystallinity of the crystal; V is a unit cell volume; D(010) is a grain size of a crystal plane D(010), with a value satisfying 4 Å≤D(010)≤9 Å. Lithium iron phosphate cathode materials that meet the above range have excellent low-temperature electrochemical properties.

SLITTING DEVICE, SECONDARY BATTERY MANUFACTURING SYSTEM COMPRISING SAME, AND METHOD FOR MANUFACTURING SECONDARY BATTERY

Resumen de: US20260221411A1

0000 A method for providing a secondary includes applying an electrode slurry so that a plurality of coating lanes are formed on a first electrode sheet unwound from a first electrode roll; inspecting the first electrode sheet to collect inspection data; forming an NG mark on the first electrode sheet on the basis of the inspection data; and winding the first electrode sheet into a second electrode roll. The NG mark indicates a position of a defect on the first electrode sheet in the traverse direction.

Lithium Silicon Oxide, Negative Electrode Comprising the Same, and Lithium Secondary Battery Comprising the Negative Electrode

Resumen de: US20260221434A1

A lithium silicon oxide may exhibit suppressed gas generation upon application to an aqueous slurry. The lithium silicon oxide may include a first peak having a width of 0.2 to 2.0 ppm and a second peak having a width of 3 to 10 ppm in a range of −88 to −99 ppm in a 29Si NMR spectrum obtained via 29Si solid state (magic angle spinning) MAS nuclear magnetic resonance (NMR) measurement, wherein a ratio of an integral value of the first peak to an integral value of the second peak (first peak/second peak) is greater than 0.22 and less than or equal to 0.31. A negative electrode may include the lithium silicon oxide, and a lithium secondary battery may include the negative electrode.

SEPARATOR, SECONDARY BATTERY CONTAINING SAME, AND ELECTRONIC DEVICE

Resumen de: US20260221595A1

0000 A separator includes a substrate layer, a first adhesive layer, and a second adhesive layer stacked sequentially. Both the first adhesive layer and the second adhesive layer are disposed on at least one side of the substrate layer. Both the first adhesive layer and the second adhesive layer extend from a first end of the separator toward a second end of the separator opposite to the first end of the separator. The first adhesive layer includes first adhesive particles. The second adhesive layer includes second adhesive particles. A particle diameter of each first adhesive particle is D<1 >μm, and a particle diameter of each second adhesive particle is D<2 >μm, D<2>>D<1>.

POWER SUPPLY UNIT

Resumen de: US20260221527A1

A power supply unit for a launch vehicle is disclosed. The power supply unit comprises a protective housing and, within the housing, a control module and a battery holder configured to receive a plurality of replaceable lithium-ion battery cells. The control module comprises a power switching and distribution module, and a battery management and monitoring system module. The power supply unit has several advantages including improved safety, and reduced size and weight.

HIGH-CAPACITY BATTERY AND METHOD FOR REPAIRING HIGH-CAPACITY BATTERY

Resumen de: US20260221637A1

0000 A high-capacity battery and a method for repairing the high-capacity battery. The high-capacity battery includes a plurality of battery cells connected in parallel, an inner cavity of each of the plurality of battery cells includes a gas region and an electrolyte region; and the electrolyte regions of the plurality of battery cells being in communication, thereby forming a shared electrolyte system. In the high-capacity battery of the disclosure, the electrolyte regions of each of the plurality of battery cells are communicated, so that the electrolytes of all of the plurality of battery cells are in the same system, the difference among the plurality of battery cells is reduced, and the performance and cycle life of the high-capacity battery are increased.

MACROMONOMER AND SOLID-STATE POLYMER ELECTROLYTE

Resumen de: US20260221493A1

The invention provides a macromonomer, an electrolyte precursor composition comprising the macromonomer, a method to prepare a solid-polymer electrolyte, a solid-polymer electrolyte, a solid-state lithium secondary battery, an electrochemical device and a device.

SPODUMENE CONCENTRATION FOR LITHIUM RECOVERY

Resumen de: US20260218333A1

There is provided a method of recovering lithium concentrate from an ore containing spodumene. The ore is crushed to obtain a fine fraction and a coarse fraction. The coarse fraction is calcined at a temperature of from about 950 to about 1100° C. to obtain a calcined coarse fraction containing spodumene particles having a beta crystal structure. The calcined coarse fraction is selectively screened to separate out the spodumene particles and produce screened spodumene particles. A magnetic separation is performed on the screened spodumene particles to concentrate the spodumene particles and separate out non-magnetic contaminants to recover the lithium concentrate.

POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM-ION BATTERIES, BATTERY COMPRISING THE SAME, AND USE THEREOF

Resumen de: US20260221437A1

The present invention relates to a positive electrode active material for lithium-ion batteries, wherein the positive electrode active material comprises secondary particles comprising primary particles, wherein the primary particles have an average primary particle size (S1) as determined by SEM image analysis, wherein the positive electrode active material has an average crystallite size (S2) as determined by X-Ray Diffraction measurement, wherein S1/S2 is at least 13, and wherein the positive electrode active material has been treated with an aqueous solution.

ELECTRODE MANUFACTURING METHOD, MANUFACTURING SYSTEM, AND ELECTRODE

Resumen de: US20260221418A1

A method of producing an electrode includes (a) preparing a base sheet; (b) preparing an active material film; and (c) affixing the active material film to the base sheet by passing the base sheet and the active material film through a roll gap. The base sheet includes a first region and a second region. An arithmetic mean roughness of the second region is greater than an arithmetic mean roughness of the first region. The second region is adjacent to the first region. In the (c), the active material film adheres selectively to the first region among the first region and the second region.

METHOD FOR PRODUCING POSITIVE ELECTRODE ACTIVE MATERIAL FOR SECONDARY BATTERIES

Resumen de: US20260217561A1

0000 A method for producing a positive electrode active material for secondary batteries according to the present invention is characterized by comprising: a water washing step in which a slurry that is obtained by mixing an Ni-containing lithium transition metal oxide with water or an aqueous solution is stirred, thereby water washing the Ni-containing lithium transition metal oxide; a solid-liquid separation step in which the slurry is subjected to solid-liquid separation, thereby obtaining a cake that contains the Ni-containing lithium transition metal oxide; and a drying step in which the cake is dried. This method for producing a positive electrode active material for secondary batteries is also characterized in that a sulfonic acid compound represented by general formula (I) (wherein A represents H, Li or Na, and R represents H or a hydrocarbon group) is added to the slurry in the water washing step. 0000

Method for Preparing Aluminum Thin Film, Aluminum Thin Film, and Positive Electrode and Lithium Secondary Battery Which Include the Aluminum Thin Film

Resumen de: US20260218360A1

A method for preparing an aluminum thin film includes; (A) slitting an aluminum thin film and winding the slit aluminum thin film in one direction, and (B) heat-treating a slit surface including a slit portion of the aluminum thin film in a roll of the wound aluminum thin film. The heat treatment may be performed to satisfy Equation 1 below:-0.21⁢t+1⁢5⁢0≤T≤-0.21⁢t+2⁢1⁢0,Equation⁢1where heat treatment temperature is indicated as T (unit: ° C.) and heat treatment time is indicated as t (unit: seconds).Also disclosed is an aluminum thin film having a thickness of 10 μm to 20 μm, having a tensile strength of 20.0 kgf/mm2 to 30.4 kgf/mm2 in the MD direction, and having an elongation of 1.8% to 2.6% in the MD direction. A positive electrode and a lithium secondary battery including the aluminum thin film are also disclosed.

Energy Storage System with Common-Mode Arcing Detection Function, and Photovoltaic Energy Storage Device

Resumen de: US20260221791A1

An energy storage system includes a common-mode arcing detection function and a photovoltaic energy storage device. The energy storage system further includes a battery cluster, a common-mode current detection unit, and a controller. The controller is configured to control a path between the battery cluster and an output end of the energy storage system to be cut off when a frequency domain component of a common-mode current detected by the common-mode current detection unit is greater than a first preset amplitude

APPARATUS FOR VERTICAL RECYCLING OF WASTE BATTERIES

Nº publicación: US20260218984A1 30/07/2026

Solicitante:

RD SOLUTION CO LTD [KR]
RD SOLUTION CO., LTD

Resumen de: US20260218984A1

The present invention provides an apparatus for vertical recycling of waste batteries, the apparatus including a heating part heating objects located inside a work part and a controller controlling an operation of the heating part, wherein the controller controls at least one or more of a temperature increase rate and a temperature increase time of the heating part. According to the present invention, through heat treatment based on an optimal temperature increase rate, it is possible to maximize heat treatment efficiency, since a storage part to which objects are input can be easily moved and firmly fixed and worker intervention in a high-temperature, high-pressure environment can be minimized, convenience and safety can be significantly improved, and through the present invention that adopts a vertical dry smelting method, mass treatment of objects is possible without performing pretreatment processes thereon, and the generation of harmful substances can be minimized.