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ELECTRODE FOR SECONDARY BATTERIES, AND SECONDARY BATTERY

Resumen de: WO2026048578A1

The present invention is characterized in that: a positive electrode (11) is provided with a long positive electrode core body (30), and a positive electrode mixture layer (32) and a coating layer (46) which are disposed on the positive electrode core body (30); the positive electrode core body (30) comprises, at an edge in the short-side direction of the positive electrode core body (30), a positive electrode core body exposed part (34) which extends in the longitudinal direction of the positive electrode core body (30) and in which the positive electrode core body (30) is exposed, a positive electrode mixture layer disposition part (33) in which the positive electrode mixture layer (32) is disposed, and a coating layer disposition part (35) in which the coating layer (46) is disposed between the positive electrode core body exposed part (34) and the positive electrode mixture layer disposition part (33); the coating layer (46) has a protective layer (48) that comprises an inorganic filler and a first binder, and an adhesive layer (50) that comprises a second binder; the adhesive layer (50) is disposed on the positive electrode core body (32) in the coating layer disposition part (35); and the protective layer (48) is disposed on the adhesive layer (50).

PREPARATION METHOD FOR HIGH-SELECTIVITY LITHIUM SUPER-ION CONDUCTOR MEMBRANE

Resumen de: WO2026045776A1

The present invention relates to the technical field of membrane separation. Disclosed is a preparation method for a high-selectivity lithium super-ion conductor membrane. In the method, a lithium super-ion conductor material, i.e. Li7-xLa3Zr2-xTaxO12 (LLZTO), is used as an aggregate and polyvinyl alcohol is added as a sintering aid, LLZTO is firstly pressed into a green body by means of a tableting molding technique, and then the green body is calcined at a high temperature to obtain an LLZTO membrane. In order to further improve the compactness and separation performance of the LLZTO membrane, an organic crosslinking aid is studied and introduced to modify pores of the LLZTO membrane to obtain a dense lithium super-ion conductor membrane. The lithium super-ion conductor membrane exhibits excellent ion separation performance, which provides a reference concept for related fields such as efficient recovery and extraction of lithium resources.

ENERGY STORAGE SYSTEM AND CONTROL METHOD THEREFOR

Resumen de: WO2026045836A1

An energy storage system and a control method therefor. The energy storage system (10) comprises: a battery (12) configured to store and release energy; an energy storage converter (13) configured to be connected to a power supply source and the battery (12); and a thermal management system (11). The thermal management system (11) comprises: a first liquid cooling circulation loop (20) comprising a first heat exchanger (21) configured to perform heat exchange with the battery (12); a second liquid cooling circulation loop (30) comprising a second heat exchanger (31) configured to perform heat exchange with the energy storage converter (13); and a third heat exchanger (111) connected to both the first liquid cooling circulation loop (20) and the second liquid cooling circulation loop (30), and configured to achieve heat exchange between a cooling liquid in the first liquid cooling circulation loop (20) and a cooling liquid in the second liquid cooling circulation loop (30).

ELECTROCHEMICAL APPARATUS AND ELECTRONIC DEVICE

Resumen de: WO2026044711A1

The present application provides an electrochemical apparatus and an electronic device. The electrochemical apparatus of the present application comprises a positive electrode sheet and an electrolyte, the positive electrode sheet containing carbon nanotube clusters, and the electrolyte comprising a compound represented by formula (I), and further comprising a second component, the second component comprising any one or both of a compound represented by formula (II) and a compound represented by formula (III). On the basis of the mass of the electrolyte, the content of the compound represented by formula I in the electrolyte in percentage by mass is A%, and the content of the second component in percentage by mass is C%, where A and C satisfy the conditions: 10≤(A+C)≤52 and 2≤A≤25. In the present application, the components and content of the components of the electrolyte in the electrochemical apparatus are controlled, so that the electrochemical apparatus can have good low-temperature discharge performance and low low-temperature impedance.

METHOD FOR MONITORING THE STATUS OF A PLURALITY OF BATTERY CELLS IN AN ENERGY STORAGE SYSTEM

Resumen de: US20260063730A1

A method for monitoring a status of an energy storage system connected to a power converter is disclosed. The energy storage system comprises a plurality of interconnected energy storage cells, and the power converter is configured to output power from the energy storage system to a power transmission system and to charge the energy storage system with power from the power transmission system. The method comprises generating, by the power converter, an electrical signal injected into the energy storage system, measuring a response signal generated in response to the injected electrical signal, and determining a status of the energy storage system based on the received response signal.

SYSTEM AND METHOD FOR DEGRADATION BASED BATTERY CONTROL

Resumen de: US20260063728A1

A method can include receiving battery sensor measurements, determining a state of the battery (e.g., SoH, SoC, SoE, SoP, etc. or information correlated therewith such as internal resistance, open circuit voltage, etc.), estimating an aging profile or degradation of the battery for one or more operating conditions, and determining operating conditions for the battery based on the estimated degradation.

SENSING ASSEMBLY AND MANUFACTURING METHOD OF BATTERY CELL STACK

Resumen de: US20260063731A1

A sensing assembly includes a plurality of busbars and a plurality of sensing frames arranged along a first direction to support the plurality of busbars. The sensing frames includes a middle sensing frame and an outer sensing frame disposed on a first side of the middle sensing frame along the first direction. The middle sensing frame includes: a first peripheral surface facing toward one side in the first direction; a second peripheral surface disposed on an opposite side to the first peripheral surface and facing toward an opposite side in the first direction; a support surface connected with the second peripheral surface and facing toward one side in a second direction crossing the first direction; a guide protrusion protruding from the first peripheral surface toward the one side in the first direction; and a guide groove disposed where the support surface and the second peripheral surface are connected.

SYSTEMS AND METHODS FOR DETERMINING DEGRADATION OF BATTERIES

Resumen de: US20260063727A1

Systems and methods for estimating battery degradation of a battery energy storage system (BESS) are disclosed. An iterative process is executed over a pre-defined time period divided into iterations. For each iteration, an average temperature of the BESS is determined by inputting a state of health (SOH) and charge rate into an average temperature look-up-table (LUT). The SOH for the next iteration is determined by inputting the determined average temperature into a set of cell degradation equations. The charge rate for the next iteration is derived from a usage profile which defines the charging and discharging cycles over the pre-defined time period and includes power and SOC over the pre-defined time period. The SOH of the BESS over the pre-defined time period may then be displayed on a user interface.

ULTRASONIC WELDING DEVICE

Resumen de: US20260061514A1

An ultrasonic welding device includes an anvil configured to support a lower portion of a welding target, and a welding horn above the anvil, the welding target being between the welding horn and the anvil, and the welding horn including a body, a head at a first end of the body, and movable welding knurls on a surface of the head.

Polyolefin-Based Microporous Membrane, Method for Manufacturing the Same, and Secondary Battery Including the Same

Resumen de: US20260066458A1

Provided are a polyolefin-based microporous membrane and methods for manufacturing the same, a separator comprising the polyolefin-based microporous membrane, and a secondary battery comprising the separator. The polyolefin-based microporous membrane or the separator comprising the same comprises a polyolefin, and has a gas permeability of about 2.5×10−5 Darcy or more, a shrinkage rate in the transverse direction (TD) at 120° C. of about 10% or less, and a BDV index of about 15 or more as represented by the following Equation 1:BDV⁢index⁢=((P2+M4)D×d×ε)×1⁢0⁢0Equation⁢1wherein the variables are defined as follows: P: puncture strength (N/μm) of the polyolefin-based microporous membrane; M: viscosity average molecular weight (×105 g/mol) of polyolefin; D: gas permeability (×10−5 Darcy) of the polyolefin-based microporous membrane; d: average pore size (nm) of the polyolefin-based microporous membrane; and ε: porosity of the polyolefin-based microporous membrane.)

BATTERY PACK AND VEHICLE INCLUDING SAME

Resumen de: US20260066452A1

A battery pack according to an embodiment of the present disclosure may include: a plurality of battery cells; a pack case configured to accommodate the plurality of battery cells and having a venting portion configured to discharge gas generated from the battery cells to the outside; and a protective cover configured to cover at least a portion of the venting portion.

SECONDARY BATTERY

Resumen de: US20260066465A1

A secondary battery includes an electrode stack having a separator, the separator having a first, second and third separator regions, a first negative electrode plate between the first separator region and the second separator region, a first positive electrode plate between the second separator region and the third separator region, an insulating tape on a periphery of the electrode stack, a case receiving the electrode stack and the insulating tape, and a first separator piece between the first negative electrode plate and the second separator region.

BATTERY ARRAY BUSBAR FRAME DESIGNS

Resumen de: US20260066476A1

Battery array busbar frame designs are disclosed for use within traction battery packs. An exemplary battery array may include a busbar frame that includes features that facilitate the use of mechanical fastenerless connections inside the battery array. These features may include legs that can be mounted to a top cover and/or bottom cover of an array housing via an adhesive, and holders that provide an interface for connecting cell spacers to the busbar frame in order to mitigate busbar frame and/or cell spacer motion and increase the structural integrity of the battery array. Gaps between adjacent legs of the busbar frame may further establish coolant flow passages for directing a coolant around battery cells in order to thermally manage the battery array.

RECHARGEABLE LITHIUM-ION MICRO-BATTERY AND METHODS OF MAKING AND USING THE SAME

Resumen de: US20260066328A1

A cylindrical battery having a wound jelly roll configuration that includes an anode current collector having a first surface and an opposing second surface; at least one anode disposed on the first surface of the anode current collector; at least one Li metal film disposed on the first surface anode current collector, wherein the at least one Li metal film is spaced apart from the anode; a cathode current collector having a first surface and an opposing second surface; at least one cathode disposed on the first surface of the cathode current collector; and a first membrane separator positioned between the anode and the cathode.

NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

Resumen de: WO2026048568A1

A non-aqueous electrolyte secondary battery comprises a positive electrode, a negative electrode, and a non-aqueous electrolyte, wherein the non-aqueous electrolyte secondary battery is characterized in that: the negative electrode has a negative electrode active material that contains a Si-containing material; the Si-containing material contains a composite material having a carbon phase and a silicon phase that is dispersed in the carbon phase; the non-aqueous electrolyte contains a heterocyclic compound that contains a heterocycle and at least one electron-withdrawing group R; the electron-withdrawing group R contains oxygen and/or nitrogen; and the heterocycle contains nitrogen and sulfur.

SECONDARY BATTERY NEGATIVE ELECTRODE AND SECONDARY BATTERY

Resumen de: WO2026048563A1

A secondary battery negative electrode (12) is characterized by comprising an oblong negative electrode core (30) and a negative electrode mixture layer (32) that is provided on the negative electrode core (30) and by having a first end region (12a) that is on one end (32a) side in the longitudinal direction of the negative electrode mixture layer (32), a second end region (12b) that is on another end (32b) side in the longitudinal direction of the negative electrode mixture layer (32), and a low expansion region (12c) that has a lower negative electrode plate charging expansion rate than the first end region (12a) and the second end region (12b), the low expansion region (12c) being at least at a position of at least 0.05 but less than 0.40 when the position of the one end (32a) in the longitudinal direction of the negative electrode mixture layer (32) is 0 and the position of the other end (32b) in the longitudinal direction of the negative electrode mixture layer (32) is 1.

METHOD FOR MANUFACTURING POWER STORAGE DEVICE, AND POWER STORAGE DEVICE

Resumen de: WO2026048688A1

This method for manufacturing a power storage device comprises: a step for alternately laminating an electrode foil and separators, and causing at least a part of an active-material uncoated portion of the laminated electrode foil to protrude from end portions of the separators in a direction along a short side of the electrode foil; a step for bending at least a part of the active-material uncoated portion at a plurality of locations to form a plurality of extension portions extending in a direction intersecting the electrode foil so as to cover the separators when viewed from the direction along the short side of the electrode foil; and a step for laser-welding the active-material uncoated portion and a current collector plate by irradiating an outer surface of the current collector plate with laser light in a state in which an inner surface of the current collector plate is in contact with a part of the active-material uncoated portion that is outside the plurality of extension portions in the direction along the short side of the electrode foil.

EXPLOSION-PROOF VALVE, BATTERY APPARATUS, ENERGY STORAGE DEVICE, AND ELECTRIC DEVICE

Resumen de: WO2026045087A1

A battery apparatus comprises: a case, an explosion-proof valve and at least one battery cell assembly. The explosion-proof valve comprises: a valve body defining a pressure relief channel and a pressure relief port; a valve cover mounted on the valve body; a sealing membrane mounted on the valve body, configured to isolate the pressure relief channel from the pressure relief port, and having a sealing section for sealing the valve body; a piston arranged in the valve body and facing the pressure relief channel, the sealing section being clamped between the piston and the valve body; and an elastic member abutting against the valve cover and configured to pressing the sealing section towards the valve body by pressing the piston. With the structure, the one-way ventilation function of the explosion-proof valve is realized, the sealing performance of the explosion-proof valve in a natural state is optimized, the frequency and the total amount of gas exchange between the interior of the case and the outside are reduced, condensed water generated inside the case is reduced, and the reliability of the battery apparatus is improved.

EXPLOSION-PROOF VALVE, BATTERY DEVICE, ENERGY STORAGE DEVICE AND ELECTRIC DEVICE

Resumen de: WO2026045086A1

The embodiments of the present application belong to the technical field of batteries, and provide an explosion-proof valve, a battery device, an energy storage device and an electric device. The battery device comprises a case, at least one battery cell assembly accommodated in the case, and an explosion-proof valve mounted on the case. The explosion-proof valve comprises a valve body in which a pressure relief channel and a pressure relief port are formed; a valve bonnet mounted on the valve body; a sealing film which is mounted on the valve body and is used for separating the pressure relief channel from the pressure relief port, and which comprises a first section, a second section and a sealing section that are connected in sequence, wherein the first section is connected to the valve body, a cavity in communication with the pressure relief port is formed between the second section and the valve body, and the sealing section is used for sealing the valve body; a piston disposed in the valve body, wherein the sealing section is sandwiched between the piston and the valve body; and an elastic member, one end of the elastic member abutting against the valve bonnet, and the other end of the elastic member pressing the sealing section towards the valve body by means of pressing the piston.

SECONDARY BATTERY SEPARATOR AND SECONDARY BATTERY

Resumen de: WO2026045065A1

A secondary battery separator and a secondary battery. The secondary battery separator comprises a base material and a covering layer. The base material comprises a polyolefin microporous membrane with a polyolefin as the main component. The covering layer is configured on at least one surface of the base material. The covering layer comprises inorganic particles and polymer particles, wherein the inorganic particles are consecutively distributed in the covering layer, and the polymer particles are discretely distributed among the inorganic particles and protrude out of the surface of the covering layer. The inorganic particles are accumulated as few as possible in the direction of the polymer particles to form a slope, such that the problem of the film surface being uneven after hot pressing can be mitigated.

SOLID ELECTROLYTE WITH CARBON COATED SURFACE, PREPARATION METHOD THEREFOR, AND USE THEREOF

Resumen de: WO2026045019A1

Provided in the present disclosure are a solid electrolyte with a carbon coated surface, a preparation method therefor, and the use thereof. The preparation method comprises the following steps: A) subjecting a solid-state electrolyte to alkaline washing in an alkaline solution, and then aging the alkaline-washed solid-state electrolyte in an air atmosphere to generate Li2CO3 on the surface, so as to obtain an aged solid-state electrolyte, the alkaline solution being an aqueous solution of lithium hydroxide and the concentration of the alkaline solution being less than 0.05 mol/L; B) subjecting the aged solid electrolyte to acid washing in a dilute acid solution, and drying same after the acid washing to obtain a dried powder; C) mixing the dried powder with a solution of an organic carbon source, and enables the carbon source to undergo surface adsorption or in-situ polymerization, so as to obtain an intermediate partially coated with the organic carbon source; and D) calcining the intermediate partially coated with the organic carbon source in an inert atmosphere, so as to obtain the solid electrolyte with a carbon coated surface. By means of the modes of alkaline washing and aging, the present disclosure achieves higher controllability over the carbon-coated surface area and is applicable to more types of electrolytes.

THIN BAG-TYPE PUNCTURE-RESISTANT AGM SEPARATOR AND PREPARATION METHOD THEREFOR

Resumen de: WO2026044837A1

The present invention belongs to the technical field of battery separators, and relates to a thin bag-type puncture-resistant AGM separator and a preparation method therefor. The thin bag-type puncture-resistant AGM separator comprises the following raw materials in percentages by mass: 50%-70% of high-alkali glass fibers and 30%-50% of reinforced fibers, wherein the high-alkali glass fibers comprise high-alkali glass fibers having a beating degree of 29-44°SR and high-alkali glass fibers having a beating degree of 19-29°SR; and the reinforced fibers are sheath-core-type fibers with dual melting points. In the present invention, a thin bag-type puncture-resistant AGM separator suitable for a barren-liquor-type lead-acid storage battery is prepared; and same has a bag-type structure, can completely cover a electrode sheet, and has high puncture resistance, thin and uniform thickness, high air permeability and low electrical resistance.

BATTERY MODULE ABNORMALITY DETECTION DEVICE AND BATTERY PACK INCLUDING THE SAME

Resumen de: US20260066364A1

A battery module abnormality detection device detects an abnormality in a battery module. The battery module includes a battery group in which a plurality of battery cells are arranged, and a cooling unit including a coolant pipe arranged on one surface of the battery group to extend in a direction in which the plurality of battery cells are arranged. The battery module abnormality detection device includes a first temperature sensor to measure temperature values of battery cells arranged adjacent to an inlet portion of the coolant pipe, a second temperature sensor to measure temperature values of battery cells arranged adjacent to an outlet portion of the coolant pipe, and a control unit to detect an abnormal state of the battery module by using the temperature values measured by the first temperature sensor and the temperature values measured by the second temperature sensor.

METHOD FOR CHARGING RECHARGEABLE LITHIUM BATTERY

Resumen de: US20260066368A1

The present disclosure relates to a method for charging a rechargeable lithium battery including constant-current charging the rechargeable lithium battery at a current density of 4 C to 10 C; and constant-voltage charging the rechargeable lithium battery, wherein the rechargeable lithium battery includes a positive electrode active material including a lithium nickel-based composite oxide having a nickel content of greater than or equal to about 80 mol % based on 100 mol % of metals excluding lithium.

BATTERY, AND BATTERY PACK AND VEHICLE COMPRISING THE SAME

Nº publicación: US20260066360A1 05/03/2026

Solicitante:

LG ENERGY SOLUTION LTD [KR]
LG ENERGY SOLUTION, LTD

Resumen de: US20260066360A1

A battery may include an electrode assembly including a first electrode, a second electrode and a separator interposed between the first electrode and the second electrode. The first electrode may include a first active material region coated with an active material layer along a winding direction and a first uncoated region not coated with the active material layer. The battery may further include a first current collector coupled to at least part of the first uncoated region on the electrode assembly, a battery housing to accommodate the electrode assembly and the first current collector, and an insulator interposed between an inner surface of the battery housing facing the first uncoated region or the first current collector and the first uncoated region or the first current collector to block an electrical connection between the first uncoated region and the battery housing.