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SEPARATOR, ELECTROCHEMICAL DEVICE, AND ELECTRONIC DEVICE

Resumen de: US20260081307A1

A separator includes a separator substrate, a first coating layer, and a second coating layer. The separator substrate includes a first surface and a second surface disposed opposite to each other. The first surface faces a positive electrode, and the second surface faces a negative electrode. The first coating layer is disposed on the first surface, and the second coating layer is disposed on the second surface. The first coating layer is a dense solid filler coating. A porosity of the first coating layer is denoted as D1, satisfying: 10%≤D1<30%. The second coating layer is a high-porosity solid filler coating. A porosity of the second coating layer is denoted as D2, satisfying: 30%≤D2≤60%.

BATTERY AND METHOD OF MANUFACTURING SAME

Resumen de: US20260081325A1

A battery includes an electrode assembly, a case accommodating the electrode assembly, the case including a bottom portion, a side wall portion connected to the bottom portion, and an opening facing the bottom portion, a finishing tape on a surface of the electrode assembly, the finishing tape including a buffer layer and a heat absorbing material, and a cap assembly coupled to one end of the side wall portion to seal the opening.

APPARATUS AND METHOD FOR FORMING ELECTRODE PLATE TAB PATTERN

Resumen de: US20260081311A1

An apparatus for forming an electrode plate tab pattern includes a conveying portion configured to convey, in a first direction, an electrode plate coated with an active material, a first pattern forming portion configured to form a first tab pattern on the electrode plate, and a second pattern forming portion configured to form a second tab pattern on the electrode plate. The first tab pattern and the second tab pattern are configured to be spaced apart from each other by a preset first distance.

COOLANT SYSTEM CONNECTION COVER

Resumen de: US20260081329A1

A vehicle, a coolant system for a vehicle, and a method for assembling a coolant system are provided. A method includes providing a cooling plate formed with an external surface surrounding a port, and with an internal channel in communication with the port, wherein a plate engagement surface defines the internal channel adjacent to the port; sealing the port of the cooling plate with a cover; piercing the cover with a distal end of a coolant tube; inserting the distal end into the port to engage a tube engagement surface of the coolant tube with the plate engagement surface; and pushing a removed portion of the cover into the port, while a remaining portion of the cover remains around the port.

DRAIN VALVE, BATTERY, AND ELECTRIC DEVICE

Resumen de: US20260081331A1

A drain valve includes a valve body, a valve core, a gas-generating substance, and a check member. The valve body has a liquid inlet and a liquid outlet. The valve core movably fits with the valve body to close the liquid outlet. The gas-generating substance is at least partially disposed within the valve body, and the gas-generating substance is configured to react with liquid water to generate a gas so as to push the valve core to open the liquid outlet. The check member is configured to allow the liquid water to enter the valve body from the liquid inlet and restrict gas from flowing out of the valve body through the liquid inlet. The gas-generating substance reacts with the liquid water to produce the gas, and the check member restricts the gas from flowing out of the valve body through the liquid inlet.

NEGATIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR PRODUCING SAME

Resumen de: US20260081206A1

A negative electrode active material for a non-aqueous electrolyte secondary battery containing negative electrode active material particles which include silicon compound particles containing a silicon compound (SiOx: 0.5≤x≤1.6), wherein the silicon compound particles are a negative electrode active material for a non-aqueous electrolyte secondary battery containing a Li compound, the material particles are at least partially coated with a carbon coating, an amount of the carbon coating relative to a total amount of the silicon compound particles and carbon coating is larger than 0 mass % and 1 mass % or less, the carbon coating contains a coating composed of at least any one of a compound having O—C═O bond and a compound having C—C bond, and the silicon compound particles contain crystalline Li2SiO3 as the Li compound. Thereby, the negative electrode active material for a non-aqueous electrolyte secondary battery having a large capacity, excellent cycle characteristics, and first-time efficiency is provided.

Electrode Assembly, Manufacturing Method Therefor, and Secondary Battery, Battery Pack and Transportation Means Including Electrode Assembly

Resumen de: US20260081205A1

A jelly-roll type electrode assembly in which a positive electrode, a separator, and a negative electrode are wound. The positive electrode includes a positive electrode edge portion adjacent to a winding center portion and a sealing portion surrounding the positive electrode edge portion. The positive electrode edge portion and the sealing portion each have at least a portion rounded. A method for manufacturing the jelly-roll type electrode assembly, and a secondary battery, a battery pack, and a moving means including the jelly-roll type electrode assembly are also disclosed.

CELL WINDING PROCESS, CELL WINDING DEVICE, CELL, BATTERY, AND POWER CONSUMING DEVICE

Resumen de: US20260081201A1

A cell winding process, a cell winding device, a cell, a battery, and a power consuming device. A heating portion is arranged to heat a separator layer, such that a PCS polymer of the separator layer is melted at a high temperature, to bond a cathode electrode plate to an anode electrode plate, and the cathode electrode plate is thus closely bonded and fixed to the anode electrode plate, thereby preventing the electrode plates from being retracted due to stress release after winding, which otherwise results in a gap.

APPARATUS AND METHOD FOR MANUFACTURING SECONDARY BATTERY

Resumen de: US20260081200A1

An apparatus for manufacturing a secondary battery and a method for manufacturing a secondary battery using the apparatus, the apparatus for manufacturing a secondary battery including a rod extending in a longitudinal direction and a tab pressing portion at an end portion of the rod having a relatively higher heat resistance than the rod.

PLANT-BASED ELECTRICAL DEVICES

Resumen de: US20260081196A1

A device may include a decellularized biological scaffold, a first electrode, and a second electrode, wherein the decellularized biological scaffold is in electrical and/or chemical communication with the first and second electrodes. In one example, the device is a battery and the device may include an electrolyte layer supported on the decellularized biological scaffold; an anode layer disposed on a first side of the electrolyte layer; and a cathode layer disposed on second side of the electrolyte layer, opposite the anode layer. The electrolyte layer may include a plant-based conductive hydrogel and/or a PEDOT collagen matrix. The anode and/or the cathode layer may comprise metallic vesicles secreted by a plant.

BATTERY PACK THERMAL BARRIERS WITH OVERLAPPING INTERFACES

Resumen de: US20260081260A1

A traction battery pack assembly includes first and second thermal barriers, each comprising a divider section and a covering section. The assembly further comprises one or more battery cells positioned between the divider sections of the first and second thermal barriers along a cell stack axis. The covering section of the first thermal barrier extends over a portion of the battery cells and interfaces with the covering section of the second thermal barrier. Additionally, the covering sections of the first and second thermal barriers are axially overlapped along the cell stack axis.

CYLINDRICAL BATTERY, PACK AND ELECTRONIC DEVICE

Resumen de: US20260081264A1

The disclosure provides a cylindrical battery, a pack, and an electronic device. The cylindrical battery includes a housing having an opening at one end in a height direction of the cylindrical battery; an electrode assembly located in the housing and having a winding center hole; a cover plate covering the opening of the housing and having an explosion-proof valve region formed by being surrounded by explosion-proof valves. The winding center hole is located within a range of an orthogonal projection of the explosion-proof valve region of the cover plate in the height direction. The winding center hole has a diameter D1, a partial region of the cover plate has a diameter D2, and 35%≥D1/D2≥10%.

BATTERY

Resumen de: US20260081267A1

A battery of the present disclosure includes: an electrode body including a solid electrolyte; a case housing the electrode body; and a resin body provided in gaps between the case and end surfaces of the electrode body. The resin body includes a first layer laminated on the end surfaces of the electrode body and a second layer laminated on the first layer. A resin component of the first layer is a resin having a hydroxy group that is less than 100 ppm. The second layer is a layer that electrically insulates the electrode body and the case.

POSITIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

Resumen de: US20260081146A1

A positive electrode active material 32 according to an example of an embodiment of the present invention contains first composite oxides 33 and second composite oxides 34. The first composite oxides 33 are secondary particles each formed by aggregation of primary particles having an average particle diameter of less than or equal to 0.3 μm, and the second composite oxides 34 includes primary particles of greater than or equal to 0.5 μm. D50a of the first composite oxides 33 is larger than D50b of the second composite oxides 34. The ratio of the mean cross-section area (Sb) of the second composite oxides 34 with respect to the mean cross-section area (Sa) of the primary particles 35 constituting the first composite oxides 33 satisfies the condition 80≤(Sb/Sa)≤600.

POSITIVE ELECTRODE ACTIVE MATERIAL AND PREPARATION METHOD THEREOF, SECONDARY BATTERY, AND ELECTRIC APPARATUS

Resumen de: US20260081149A1

A positive electrode active material, a preparation method thereof, a secondary battery, and an electric apparatus are disclosed. The positive electrode active material is an agglomerate of primary particles. The positive electrode active material internally contains pores located between the primary particles, and the longest connected distance of the pores is not less than 0.5 μm, optionally 1 μm to 5 μm. The positive electrode active material can provide expansion space for the anisotropic volume changes of the primary particles inside the positive electrode active material during cycling, thereby extending the cycle life of a battery. In addition, the interconnected pores are conducive to shortening a transmission path for metal ions (such as lithium ions) within the positive electrode active material, facilitating the deintercalation and intercalation of the metal ions, and further enhancing the kinetic performance of the battery and facilitating the capacity utilization of the battery.

NONAQUEOUS ELECTROLYTE BATTERY AND BATTERY PACK

Resumen de: US20260081150A1

According to one embodiment, provided is a nonaqueous electrolyte battery including a positive electrode containing a lithium-containing nickel-cobalt-manganese oxide, a negative electrode containing a lithium titanium-containing oxide, and a nonaqueous electrolyte. A ratio PLi—F/PNi of a peak intensity PLi—F of a highest intensity peak within 682 eV to 685 eV to a peak intensity PNi of a highest intensity peak within 850 eV to 858 eV in an X-Ray photoelectron spectrum of a positive electrode surface is 0.6 or more and 1 or less. A ratio NLi—F/NTi of a peak intensity NLi—F of a highest intensity peak within 682 eV to 685 eV to a peak intensity NTi of a highest intensity peak within 454 eV to 460 eV in an X-Ray photoelectron spectrum of a negative electrode surface is 1.8 or more and 3 or less.

TRANSITION METAL LAYERED OXIDE POSITIVE ELECTRODE MATERIAL FOR SODIUM BATTERY, AND PREPARATION METHOD THEREFOR AND USE THEREOF

Resumen de: WO2024255069A1

The invention relates to the technical field of batteries. Provided is a transition metal layered oxide positive electrode material for a sodium battery, and a preparation method therefor and the use thereof. The chemical formula of the positive electrode material is NaaNibMgcCodMnO2, wherein 0.75≤a≤0.9, 0.1≤b≤0.75, 0.1≤c≤0.25, and 0.1≤d≤0.4. The preparation method for the positive electrode material comprises the following steps: weighing and mixing a nickel source, a magnesium source, a manganese source and a cobalt source, adding the resulting mixture to deionized water, and mixing same to obtain a salt solution having a metal ion concentration of 1.0-2.0 mol/L; mixing the salt solution, a precipitant and a complexing agent, so as to obtain a precursor material; adding a sodium source to deionized water, adding the precursor material thereto, stirring and mixing same, and evaporating moisture, so as to obtain a layered oxide; and drying the layered oxide, and then grinding, calcining and cooling same to obtain the positive electrode material. The positive electrode material is applied to the field of sodium-ion batteries.

APPARATUS AND METHOD FOR COATING

Resumen de: US20260077383A1

Embodiments of the present disclosure provide a coating apparatus. The coating apparatus includes a first material supply unit configured to coat a first mixture layer on a first surface of a substrate, the substrate having markers repeatedly formed along a machine direction, a first sensor configured to sense the first mixture layer and the markers, and a processor configured to determine a position of the first mixture layer based on the markers.

ELECTRONIC CIGARETTE STEM AND AN ELECTRONIC CIGARETTE

Resumen de: US20260076417A1

The embodiments of the present disclosure provides an electronic cigarette and an electronic cigarette stem comprising a battery box, a bottom cover and a charging connection module. The battery box forms a first accommodating cavity, and both ends of it are respectively provided with an air outlet and a first through hole. The bottom cover and the battery box form a second accommodating cavity. The charging connection module is in the second accommodating cavity; an output terminal is arranged in the first accommodating cavity through the first through hole; an input terminal is connected to an external power supply through an air inlet. The air inlet, the second accommodating cavity, the first through hole, the first accommodating cavity and the air outlet form an airflow channel connecting an atomizer. Using the air inlet for both air admission and charging can simplify structure, improve production efficiency and reduce production cost.

BATTERY ASSEMBLY AND BATTERY DRIVING DEVICE

Resumen de: US20260081316A1

A battery assembly includes a battery cell accommodating an electrode assembly and including a first side that includes a first electrode terminal and a second electrode terminal thereon, a protective circuit module above the first electrode terminal and the second electrode terminal, and a connecting portion connecting the first electrode terminal and the second electrode terminal to the protective circuit module, wherein the connecting portion has a foldable structure.

LITHIUM-ION BATTERY

Resumen de: US20260081220A1

A lithium-ion battery, comprising a positive electrode, a negative electrode and a non-aqueous electrolyte. The negative electrode comprises a negative electrode material layer containing a silicon-based material, and a phosphorus-containing inactive material layer is formed on the surface of the negative electrode material layer. The non-aqueous electrolyte includes a lithium salt, an organic solvent and an additive of the compound represented by structural formula 1, where n is 0 or 1, X is selected from formula 2 or formula 3, R1 and R2 are each independently selected from H, halogen, an unsubstituted or halogen-substituted hydrocarbon group with 1-5 carbon atoms, formula 4, formula 5, and formula 6, and at least one sulfur atom is present in X, R1 or R2.

SECONDARY BATTERY AND ELECTRICAL APPARATUS

Resumen de: US20260081224A1

A secondary battery and an electrical apparatus are disclosed. The secondary battery includes a non-aqueous electrolyte solution containing a cyclic sulfate compound. An electrical apparatus including the secondary battery is also described.

ELECTROLYTE AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME

Resumen de: US20260081218A1

The present disclosure relates to an electrolyte, and a lithium secondary battery including the electrolyte. An electrolyte according to the present disclosure may include a copolymer of an acrylic monomer and a fluoroacrylic monomer, and the fluoroacrylic monomer may include 7 or more fluorine atoms. A lithium secondary battery may include a cathode, an anode including an anode current collector, and an electrolyte according to the present disclosure disposed between the cathode and the anode.

COMPOSITION BASED ON AT LEAST ONE FLUOROPOLYMER AND AT LEAST ONE HYDROPHILIC POLYMER FOR SEPARATOR COATING

Resumen de: US20260081217A1

The present invention relates to a composition comprising a polymer P1 comprising monomer units derived from vinylidene fluoride and a polymer P2 comprising monomer units derived from a monomer M2 of formula R1R2C═C(R3)C(O)R wherein the substituents R1, R2 and R3 are, independently from each other, selected from the group consisting of H and C1-C5alkyl; R is selected from the group consisting of —NHC(CH3)2CH2C(O)CH3 or —OR′ with R′ selected from the group consisting of C1-C18 alkyl optionally substituted by one or more —OH group(s) or a five- or six-membered heterocycle comprising at least one nitrogen atom in its cyclic chain, characterised in that the difference between the melting temperature and the crystallisation temperature of the composition is greater than or equal to 40° C.

NON-AQUEOUS ELECTROLYTE SOLUTION, SECONDARY BATTERY AND ELECTRICAL APPARATUS

Nº publicación: US20260081223A1 19/03/2026

Solicitante:

CONTEMPORARY AMPEREX TECH CO LIMITED [CN]
CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Resumen de: US20260081223A1

A non-aqueous electrolyte solution includes additives, the additives include a first additive and a second additive, in which, the first additive is any one or more cyclic sulfate compounds having a structure shown in a general formula (I), and the second additive is any one or more cyclic carbonate compounds having a structure shown in a general formula (III) or general formula (IV),