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Battery Cell, Battery and Battery Cell Manufacturing Method

Resumen de: US20260221607A1

0000 A battery cell, comprising: a current collector assembly comprising a main body and current collector tabs, wherein the main body is provided with a connecting end surface, each current collector tab comprises a first portion and a second portion which are connected to each other, the first portion is connected to the connecting end surface, the second portion protrudes from the first portion in the thickness direction of the main body, and the first portion, the second portion and the main body together define a groove; and metal strip tabs each comprising a protruding portion, a connecting portion and a body portion, wherein the connecting portion is connected to the body portion and protrudes from the body portion in the thickness direction of the main body, and the protruding portion is connected to the connecting portion and protrudes from the connecting portion in the width direction of the main body.

ELECTRODE ASSEMBLY, BATTERY CELL, BATTERY, AND ELECTRICAL DEVICE

Resumen de: US20260221598A1

An electrode assembly comprises a first electrode plate, a second electrode plate and a separator. The second electrode plate is stacked with the first electrode plate in the thickness direction of the first electrode plate, and the polarity of the second electrode plate is opposite to that of the first electrode plate. The separator isolates the first electrode plate from the second electrode plate, and is stacked with the first electrode plate in the thickness direction of the first electrode plate. The separator, the first electrode plate and the second electrode plate are wound to form a whole. At a starting end and/or an ending end of the winding of the electrode assembly, at least one of the first electrode plate and the second electrode plate is fixed to the separator by using a connector.

BATTERY STORAGE SYSTEM FOR AN AUTOMOBILE

Resumen de: US20260221568A1

A method of manufacturing a battery enclosure for an automobile, including forming a battery housing, including: (i) forming a unitary seamless liner that defines the battery storage cavity, and storage cavity facing coolant channels, the liner is optionally: compression molded; injection molded; or thermoformed, which includes heating a continuous and seamless plastic sheet, attaching via vacuum adsorption the plastic sheet to an inner surface of a mold that is shaped as the battery storing cavity, and cooling the plastic sheet; (ii) providing an outer shell that is optionally: (a) inductive for charging the battery cells within the enclosure; and (b) configured for transmission of radio-frequency signals therethrough; (iii) filling the core cavity with foam; forming coolant inlet and coolant outlet ports through the housing; (v) forming an electronics feed-through port through the housing; and releasably connecting a lid to a housing opening, thereby define the enclosure.

Active Fault Detection Method of Energy Storage System, and Energy Storage System

Resumen de: US20260219326A1

An active fault detection method of an energy storage system, and the energy storage system are provided. The active fault detection method of the energy storage system includes: a step of causing the state of charge of an energy storage battery to reach a first preset value; a discharge time acquisition step of causing the energy storage battery to discharge at constant current a until the state of charge thereof reaches a second preset value, stopping discharging, and acquiring a discharge time T, wherein the second preset value is less than the first preset value; and judging whether the discharge time T is less than or equal to a preset discharge time t, if so, judging that the energy storage battery has a hidden fault or the service life thereof is seriously shortened, and if not, judging that the energy storage battery is normal.

ELECTRODE ASSEMBLY FOR SECONDARY BATTERY AND METHOD OF MANUFACTURING SAME

Resumen de: US20260221488A1

Proposed is an electrode assembly for a secondary battery, the electrode assembly includes a stacked body including a first electrode plate, a second electrode plate, and a separator interposed between the first electrode plate and the second electrode plate, and an outer periphery of the stacked body may be wound with the separator for exterior finishing. In addition, the present disclosure may include a method of manufacturing an electrode assembly for a secondary battery that is externally finished with a separator.

BATTERY CELL AND BATTERY MODULE COMPRISING THE SAME

Resumen de: US20260221577A1

0000 A battery cell includes a case; an electrode assembly including a positive electrode, a negative electrode, and a separator, accommodated in the case; and a venting guide member having a guide groove therein into which a sealing portion of the case is at least partially inserted, and pressing the case to delay opening of the case.

Method for Identifying Internal Resistance Consistency Fault in Energy Storage Battery and Energy Storage System

Resumen de: US20260219331A1

0000 A method for identifying an internal resistance consistency fault in an energy storage battery and an energy storage system are provided. The method for identifying an internal resistance consistency fault in an energy storage battery includes: setting an upper limit of cell internal resistance deviation threshold; determining a relationship expression of reference internal resistance of a cell with respect to a reference temperature and reference capacity of the cell; acquiring external circuit resistance of each battery cell and current cell internal resistance; determining an actual cell internal resistance; acquiring reference internal resistance under the reference temperature and reference capacity conditions; comparing actual cell internal resistance with a same serial number in different battery modules with reference internal resistance with the same serial number to obtain an internal resistance deviation value; and determining whether the internal resistance deviation value is greater than the cell internal resistance deviation threshold.

Non-Aqueous Electrolyte and Lithium Secondary Battery Comprising the Same

Resumen de: US20260221507A1

Provided is a non-aqueous electrolyte comprising a lithium salt, an organic solvent; and an additive, wherein the additive includes at least one selected from a compounds represented by Formula 1 or Formula 2:wherein in Formula 1, n1 is an integer from 0 to 18, and in Formula 2, n2 is an integer from 0 to 18, and L is an alkylene group having 1 to 10 carbon atoms.

CARBON MATERIAL DISPERSION SOLUTION AND SLURRY COMPOSITION FOR SECONDARY BATTERY NEGATIVE ELECTRODES IN WHICH SAME IS USED

Resumen de: US20260217992A1

0000 A carbon material dispersion may reduce a wide range of microorganisms, such as bacteria, molds, and yeasts, without adversely affecting other blending components, have high antiseptic and antibacterial effects, and high durability with a small amount over a long period of time under any environment, and thereby achieve both high dispersibility and storage stability. A slurry composition for a negative electrode for a secondary battery may use the dispersion, which is suitable for producing a battery such as a lithium ion battery and an electrode. Such a carbon material dispersion may contain at least a carbon material containing carbon nanotubes, a dispersant, a preservative, and a liquid medium. The preservative may contain a triazine-based compound and at least one of: a iodopropargyl-based, pyridine-based, pyrithione-based, oxyquinoline-based, benzothiazole-based, isothiazoline-based, and/or dithiol-based compound

Additive, Electrolyte Comprising Same, and Lithium Ion Battery

Resumen de: US20260221508A1

0000 Provided are an additive, an electrolyte comprising same, and a lithium ion battery. The additive includes 3-(N,N-dimethylamino)propyltrimethoxysilane and a sulfonyl silane compound, and the sulfonyl silane compound has the structure as represented by formula (I). The additive of the present application can have a relatively low HOMO level and a relatively high LUMO level, and can form a stable interfacial film, thereby effectively isolating an electrolyte from the positive and negative electrodes, avoiding an oxidation reaction between the electrolyte and the positive and negative electrodes, reducing the generation of HF, thus reducing the HF corrosion on the positive electrode, inhibiting the gas production of a battery at a high temperature, and improving the high-temperature storage performance and the high-temperature cycle performance of the battery. The formed interfacial film is compact and rich in inorganic substance, and achieves both low-temperature performance and rate capability. 0000

INTERFACE-FREE LOW-IMPEDANCE HIGH-SAFETY ALL-SOLID-STATE BATTERY AND PREPARATION METHOD THEREFOR

Resumen de: US20260221492A1

Provided in the present disclosure are an interface-free low-impedance high-safety all-solid-state battery and a preparation method therefor. In the present disclosure, uniform permeation and wetting is realized by means of a low-temperature method, and a temperature is maintained at 15° C. to 20° C., such that an electrolyte mixed solution before polymerization uniformly permeates into a positive electrode, a negative electrode, and a diaphragm of a battery cell; and then the temperature is gradually increased in a progressive manner, such that a second mixed solution undergoes a polymerization reaction. Therefore, the polymerization is uniform during in-situ polymerization, and a battery is low in interface impedance, good in consistency and stability, and high in first-time cycle efficiency. An all-solid-state battery having a unique interface-free stereoscopic net structure is manufactured, thereby improving the first-time cycle efficiency, and improving the overall electrochemical performance of the battery, and finally industrialization is easily realized.

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 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 ELECTRODE COMPOSITION COMPRISING CARBON AND SILICON WITH SPECIFIC PROPERTIES FOR SUPERIOR PERFORMANCE

Resumen de: US20260221421A1

0000 In an aspect, a lithium-ion battery anode composition comprises a porous composite particle comprising carbon (C) and an active material comprising silicon (Si), wherein the carbon is characterized by a domain size (r), as estimated from an atomic pair distribution function G(r) obtained from a synchrotron x-ray diffraction measurement of the porous composite particle, ranging from around 10 Å (1 nm) to around 60 Å (6 nm). In a further aspect, a carbon material for use in making an anode composition for use in a Li-ion battery is characterized by a domain size (r), as estimated from an atomic pair distribution function G(r) obtained from a synchrotron x-ray diffraction measurement of the carbon material, ranging from around 10 Å (1 nm) to around 60 Å (6 nm).

METAL FOIL HAVING EXCELLENT ELONGATION AT EDGE BREAK AND SECONDARY BATTERY COMPRISING SAME

Resumen de: US20260221524A1

0000 The present invention provides a metal foil (100) having significantly improved resistance to edge breakage by selectively increasing an elongation of edge portions (60) at both ends of the metal foil, and to an electrode for a secondary battery and a secondary battery including the metal foil.

SOLID-STATE BATTERY AND PREPARATION METHOD THEREOF

Resumen de: US20260221515A1

Disclosed in the present disclosure is a solid-state battery and a preparation method therefor. According to the preparation method, for a solid-state lithium-ion pouch battery using an in-situ polymerization method, an interface-free effect can be achieved through a two-time liquid injection process, thereby allowing an electrolyte solution to undergo full formation before in-situ polymerization, a full reaction, full gas production and degassing, and achieving the purposes of bubble-free solidification, improving initial efficiency and improving cycle performance of a battery cell. With respect to the problem that initiators cannot be injected, an initiator is mixed with a small amount of a volatile solubilizer to form a second polymer precursor, a first polymer precursor and the second polymer precursor are injected separately, The second polymer precursor and the first polymer precursor can be fully mixed by the in-situ polymerization under a certain polymerization pressure, thereby making a polymerization reaction more uniform.

NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND METHOD FOR FABRICATING NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Resumen de: US20260221521A1

A technique for suppressing formation of a black region in a wound electrode body is provided. A method for fabricating a nonaqueous electrolyte secondary battery disclosed here includes: an assembly step of constructing a secondary battery assembly including a wound electrode body; and an initial charging step of performing initial charging on the secondary battery assembly. In the initial charging step, the secondary battery assembly is charged at a first charging rate until a negative electrode potential with respect to a lithium metal reference (vs. Li/Li+) of the secondary battery assembly reaches at least 0.5 V, and a remaining gas amount of the wound electrode body at the end of the initial charging step is 58 cc or less.

Method for Manufacturing Lithium Secondary Battery

Resumen de: US20260221414A1

0000 A method for manufacturing a lithium secondary battery, including preparing a battery cell including a positive electrode, a negative electrode, and an electrolyte and activating the battery cell by charging and discharging the battery cell at least one time. The positive electrode includes a lithium-rich manganese-based oxide in which the content of manganese of all metals excluding lithium is greater than 50 mol %, and a ratio of the number of moles of lithium to the number of moles of all metals excluding lithium (Li/Me) is greater than 1 The step of activating includes a first charging step of charging at SOC 5 or less in a constant current mode (CC mode), a second charging step of terminating charging at SOC 80~SOC 98 from a time point when the charging is terminated in the first charging step, and a discharging step performed once the charging steps are completed.

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.

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

ANODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND METHOD OF PREPARING THE SAME

Resumen de: US20260221433A1

0000 Provided are an anode active material for a lithium secondary battery and a method of preparing the same, wherein the anode active material for a lithium secondary battery includes a silicon-carbon composite including a porous carbon material and a silicon coating layer positioned on the porous carbon material; a metal compound layer positioned on the silicon-carbon composite and including a metal compound that is metal oxide, metal nitride, or a mixture thereof; and a carbon coating layer surrounding the silicon-carbon composite and the metal compound layer positioned on the silicon-carbon composite.

ION-CONDUCTING MEMBRANES, COMPONENTS HAVING THE ION-CONDUCTING MEMBRANES, AND PROCESSES FOR FORMING THE SAME

Resumen de: US20260221481A1

In this disclosure, an ion-conducting membrane, a component having the ion-conducting membrane and a process for making the membrane and the component are disclosed. The ion-conducting membrane includes a homogenous blend and one or more additives. The selected one or more polymers are present in a mass-percentage in a range from 1% to 40. The present ion-conducting membrane simultaneously increases the power and efficiency of the devices by combining advances in materials chemistry, nanotechnology, and manufacturing. The present ion-conducting membrane overcomes limitations in the currently known technologies without compromising the advantageous properties. The present membrane provides non-linear performance enhancement in electrochemical devices that leads to overall system level cost reduction.

SECONDARY CELL

Resumen de: US20260221605A1

There is disclosed herein a cylindrical secondary cell (1) and a method of manufacture thereof. The cell comprises a cylindrical enclosure (2) for housing an electrode roll (20), comprising a first and second enclosure end (2a, 2b) and an enclosure sidewall (2c) extending therebetween, wherein at least one enclosure end (2b) is open, a lid (10), and a current collector disc (24 ) for arranging in direct electrical contact with the electrode roll (20). The cylindrical enclosure (2) comprises a reduced radius section (2r) at the open enclosure end (2b), the current collector disc (24) comprises a first flange section (24f) that is configured to abut the reduced radius section (2r) at an outer or inner surface thereof, and the lid (10) comprises a second flange section (10f) that is configured to surround the first flange section (24f) and the reduced radius section. The lid (10) and the current collector disc (24) are configured to be attached to the cylindrical enclosure (2) by the first and second flange sections (10f, 24f) being attached to the reduced radius section (2r).

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.