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1545
resultados
Última actualización
28/10/2025 [07:18:00]
Resultados 150 a 175 de 1545
Resumen de: US2025329750A1
An electrode sheet, a manufacturing method therefor, a battery cell, a battery, and an electric device are provided. The electrode sheet includes a current collector, an active material layer, and a first insulating layer. The current collector comprises a main body and a tab extending from a first end of the main body in a first direction. The main body includes a coating region and a transition region positioned between the coating region and the tab. The active material layer is disposed on the surface of the coating region. The first insulating layer is disposed on the end surface of the main body at the first end and has a thickness of 200 nm to 2000 nm. This configuration improves the reliability of the battery cell.
Resumen de: US2025329708A1
The present disclosure relates to an impregnation evaluation device for evaluating impregnation of an electrode plate by an electrolyte. To this end, an impregnation evaluation device includes a processor configured to calculate a theoretical mass of an electrode plate, and a mass measuring unit configured to measure an actual mass of the electrode plate, wherein the processor is configured to evaluate the impregnation of the electrode plate by comparing the theoretical mass with the actual mass.
Resumen de: US2025329734A1
A rechargeable lithium battery includes a positive electrode active material, the positive electrode active material including a first particle containing a compound represented by Formula 1 and having a first average particle diameter, and a second particle containing a compound represented by Formula 2 and having a second average particle diameter larger than the first average particle diameter. Each of the first particle and the second particle has a form of a sphere-shaped secondary particle, and an amount of the first particle is equal to or greater than an amount of the second particle. A detailed description of Chemical Formulae 1 and 2 is given in this description.
Resumen de: US2025329739A1
The present invention relates to a method of using an aqueous dispersion of a polymer P obtainable by radically initiated emulsion polymerization, which comprises polymerizing (a) 40 to 75 parts by weight of at least one vinylaromatic compound, (b) 22.5 to 55 parts by weight of at least one conjugated aliphatic diene, (c) 0.5 to 10 parts by weight of at least one ethylenically unsaturated monomer containing acid groups (dl) 1 to 5 parts by weight of acrylamide and/or methacrylamide, (d2) 1 to 10 parts by weight of acrylonitrile and/or methacrylonitrile (e) 0 to 5 parts by weight of monoethylenically unsaturated monomer having at least one epoxy, hydroxyl, N-methylol or carbonyl group (f) 0 bis 20 parts by weight of at least one other monoethylenically unsaturated monomer, where the amounts of the monomers (a) to (f) add up to 100 parts by weight, at a polymerization temperature in the range of 70 to 95° C., as a polymeric binder in an electrode slurry composition for anodes of secondary batteries, aqueous polymer dispersions itself and a process for producing the aqueous dispersion by radically initiated emulsion polymerization, electrode slurry compositions for anodes comprising the polymer P, an anode of secondary batteries comprising the polymer P, a method of preparing this anode and the lithium ion secondary battery comprising the anode.
Resumen de: US2025329789A1
The present disclosure provides an all-solid-state battery and a manufacturing method thereof capable of suppressing a decrease in the battery capacity while reducing the possibility of short circuit, even when plurality of unit cells are comprised. All-solid-state battery comprising a laminate 20 of a plurality of laminated units 22, wherein each of the plurality of laminated units 22 are laminated with each other at least either contact between the first electrode current collectors or contact between the second electrode current collectors, thereby forming the laminate 20, wherein each end 28 of the plurality of laminated units 22 has an inclined surface 24 towards the lamination plane 26 of each of the plurality of laminated units 22, and, wherein the laminate 20 has the minimum area projecting in the lamination direction of each of the plurality of laminated units 22.
Resumen de: US2025329740A1
The invention provides an amino acid concatemer synergistic sulfur conversion catalyst for lithium-sulfur battery and its preparation method and application. The invention uses peptide-based materials serine (Ser), histidine (His) and aspartic acid (Asp) to construct a peptide-based mimetic enzyme, that is, Ser-His-Asp catalytic triplet, which retains the function of the enzyme while reducing the inherent complexity of the enzyme. The synergistic effect between the three significantly improves the redox reaction kinetics of lithium-sulfur battery, promotes the efficient conversion of polysulfide, accelerates Li+ transmission, and improves battery performance.
Resumen de: US2025329811A1
A self-healing battery pack includes a plurality of battery modules connected in series. When a faulty battery module is detected, an electrical protective device connected in parallel with the faulty battery is caused to operate and thereby bypass the faulty battery module. The self-healing battery pack can additionally report the detection of the faulty battery module. When maintenance is scheduled to replace the faulty battery module, the self-healing battery pack can receive instructions to adjust a state-of-charge of the battery modules to reduce an equalization period.
Resumen de: US2025329780A1
A battery cell includes: a negative electrode plate having a first and second end, a length of a in a first direction, and a gel polymer electrolyte. When a capacity of the battery cell is less than or equal to 90% of a nominal capacity of the battery cell, a first region exists on the negative electrode plate, a distance between a point in the first region farthest from the first end and the first end is110a,a second region exists on the negative electrode plate, and a distance between a point in the second region farthest from the second end and the second end is110a;and in a temperature range of 25° C. to 180° C., a heat loss amount in the first region is m, and a heat loss amount located in the second region is n, where m/n is greater than or equal to 50%.
Resumen de: US2025329784A1
An electrolyte solution for a rechargeable lithium battery and a rechargeable lithium battery including the same, wherein the electrolyte solution includes a non-aqueous organic solvent, a lithium salt, and an additive.
Resumen de: US2025329724A1
A lithium-ion secondary battery having excellent discharge characteristics even in a low-temperature environment is provided. The lithium-ion secondary battery includes a positive electrode, a negative electrode, and an electrolyte solution. The positive electrode includes lithium cobalt oxide with a median diameter (D50) of greater than or equal to 1 μm and less than or equal to 12 μm. The lithium cobalt oxide contains magnesium in its surface portion. The negative electrode includes a graphite particle, a silicon particle, and a polymer including a carboxy group. The electrolyte solution contains a mixed solvent of a fluorinated cyclic carbonate and a fluorinated chain carbonate.
Resumen de: US2025329743A1
An electrode includes: an electrode active material layer, the electrode active material layer including an electrode active material and a conductive agent, where the conductive agent includes carbon nanotube clusters, the carbon nanotube clusters being composed of a plurality of bundled carbon nanotube units, and a diameter of the carbon nanotube clusters is greater than 0.2 μm.
Resumen de: US2025329714A1
A lithium metal electrode has no more than five ppm of non-metallic elements by mass, and is bonded to a conductive substrate. Optionally, the lithium metal electrode may be bonded on one side to a conductive substrate and on another side to a lithium ion selective membrane. The lithium metal electrode may be integrated into lithium metal batteries. The inventive lithium metal electrode may be manufactured by a process involving electrolysis of lithium ions from an aqueous lithium salt solution through an ion selective membrane, carried out under a blanketing atmosphere having no more than 10 ppm of non-metallic elements, the electrolysis being performed at a constant current between about 10 mA/cm2 and about 50 mA/cm2, and wherein the constant current is applied for a time between about 1 minute and about 60 minutes.
Resumen de: US2025329726A1
Disclosed is a novel active material operatable in an aqueous battery. The aqueous battery of the present disclosure includes a positive electrode, an aqueous electrolyte solution and a negative electrode. The positive electrode includes a positive electrode active material, and the negative electrode includes a negative electrode active material. One of or both the positive electrode active material and the negative electrode active material include(s) a composite oxide. The composite oxide contains Na, at least one transition metal element of Fe, Ti, Ni and Mn, and O. The aqueous electrolyte solution contains water and potassium polyphosphate dissolved in the water.
Resumen de: US2025329771A1
A secondary battery includes: an electrode assembly comprising a first electrode plate, a second electrode plate, and a separator, the electrode assembly being formed such that a first uncoated portion connected to the first electrode plate is located on one side of the electrode assembly in a width direction and a second uncoated portion connected to the second electrode plate is on an opposite side of the electrode assembly in the width direction; a pouch unit accommodating the electrode assembly; a first electrode terminal electrically connected to the first uncoated portion and located on one side of the pouch unit in the width direction; and a second electrode terminal electrically connected to the second uncoated portion and located on an opposite side of the pouch unit in the width direction.
Resumen de: US2025329747A1
Disclosed are a positive electrode for a rechargeable lithium battery, and a rechargeable lithium battery including the positive electrode, the positive electrode including a positive electrode current collector; a safety functional layer on the positive electrode current collector, and a positive electrode active material layer on the safety functional layer, wherein the safety functional layer includes a first safety functional layer including a lithium iron phosphate-based compound and a second safety functional layer including an endothermic material.
Resumen de: US2025329794A1
Provided is a technique for preventing plastic deformation of a battery case due to restraint during initial charging. A manufacturing method disclosed herein is a manufacturing method of a non-aqueous electrolyte solution secondary battery. This method includes assembling to construct a secondary battery assembly, and initial charging of the secondary battery assembly. In the initial charging, the initial charging is started with the secondary battery assembly restrained or not restrained; when a negative electrode potential of the secondary battery assembly reaches 0.6 V, a restraint force P1 is applied to the secondary battery assembly, wherein the restraint force P1 is greater than a restraint force applied before the negative electrode potential reaches 0.6 V; and the restraint force P1 is applied to the secondary battery assembly until the negative electrode potential reaches at least 0.3 V.
Resumen de: US2025329732A1
Examples include a positive electrode active material, a preparation method of the positive electrode active material, and a rechargeable lithium battery including the positive electrode active material. An example positive electrode active material includes a first particle which has an olivine structure and a crystal structure that belongs to a Pbnm space group, wherein an X-ray diffraction (XRD) spectrum of the first particle obtained using Cu-Kα radiation exhibits a first peak corresponding to a (200) plane of the first particle and a second peak corresponding to a (020) plane of the first particle, a full width at half maximum (FWHM) of the first peak is in a range of at least about 0.14°, and a ratio of an intensity of the first peak to an intensity of the second peak is in a range of at least about 0.55°.
Resumen de: US2025329790A1
A stacked electrode assembly extends in a second direction perpendicular to a first direction which is a laminate direction of each of the electrodes and each of the separators. First and second surfaces of a metallic foil of the electrode each have an active-material coated area and an active-material uncoated area extending in the second direction. The active-material uncoated area of the second surface is located on the back of the active-material uncoated area of the first surface. The active-material uncoated area of the second surface has a first resin placement area in which a resin is disposed and which is located on the active-material coated area side of the second surface. Spaces are formed between the separator and end portions, in a third direction perpendicular to the first and second directions and on the first resin placement area side, of the active-material uncoated area of the second surface.
Resumen de: US2025329712A1
An electrode assembly includes a tab, a first insulating layer, and a second insulating layer. The first electrode plate includes a first current collector and first active material layers applied on two sides of the first current collector. The first active material layer is provided with a tab groove, and the tab groove is provided with a tab. At least one surface of the first active material layer is provided with a thinned region in communication with the tab groove. The thinned region includes a first depression apart from the tab groove in the first direction, and a second depression provided between the first depression and the tab groove. The first insulating layer is provided in the second depression. A projection of the second insulating layer in the first direction is located in the first depression.
Resumen de: US2025329778A1
The problems or issues faced by typical larger SSE batteries are solved by providing an interface or interfacial layer at least between the anode, which comprises Li or Na, and the solid state electrolyte (SSE). In some other embodiments, an interfacial layer may be provided between the anode, which comprises Li or Na, and the SSE, and an interface or interfacial layer may also be provided between the cathode and the SSE. In at least selected embodiments, aspects or objects, the interfacial layer may act as a shock absorber between a SSE (e.g., a sulfide glass SSE) and an anode material that is soft compared to the SSE (e.g., Li metal). In other embodiments, the interfacial layer may act as a shock absorber between the SSE and a cathode material that is softer than the SSE. In at least certain embodiments, the interfacial layer may improve ionic conductance between the anode and the SSE and/or the SSE and the cathode. In at least certain selected embodiments, the interfacial layer may prevent or deter lithium deposition and dendrite growth at the interface between the anode and the SSE. Interface defects at the interface between the anode and the SSE may allow lithium deposition and dendrite growth. The dendrites may continue to grow through cracks in the SSE causing a short, which is a safety issue. The inventive interfacial layer between the anode and the SSE may prevent or deter this. In at least some embodiments, the interfacial layer may be a porous polymer layer filled
Resumen de: US2025329772A1
Provided are an electrode plate stacking apparatus and an electrode plate stacking method using the same. A rotary supporting plate is rotatable about a first direction and allows a positive electrode plate to be bonded to a negative electrode plate having a surface coated with an adhesive to form an electrode plate assembly. A rotary pressing plate is spaced apart from the rotary supporting plate in a second direction perpendicular to the first direction, is rotatable about the first direction, and interferes with the rotary supporting plate to press the electrode plate assembly. A receiver is disposed below the rotary supporting plate in a third direction perpendicular to the first direction and the second direction and receives the electrode plate assembly freely falling in response to rotation of the rotary supporting plate.
Resumen de: US2025329849A1
Electricity storage apparatus includes: a stacked body mounted on a vehicle and formed by stacking an electricity storage module in the up-down direction; and a housing case that houses the stacked body. The housing case includes: a top plate positioned in a case upper surface of the housing case; a bottom plate positioned in a case lower surface of the housing case; a peripheral wall that connects the top plate and the bottom plate to each other; and a holding member. The stacked body includes: an upper surface; a lower surface; and a peripheral surface that connects the upper surface and the lower surface to each other. The holding member has: a holding rising wall; and a holding flange. The holding rising wall is formed so as to cover the peripheral surface. The holding flange is provided on the holding rising wall and is fixed to the peripheral wall.
Resumen de: US2025329749A1
Disclosed are composite substrates and rechargeable lithium batteries. The composite substrate includes a first metal layer, a second metal layer, and a fiber mat layer between the first metal layer and the second metal layer. The fiber mat layer includes a plurality of fibers and a plurality of voids between the plurality of fibers. The composite substrate has a first surface on which the first metal layer is formed, and a second surface on which the second metal layer is formed. An average roughness (Sa) of the first surface is in a range of about 1 μm to about 3 μm.
Resumen de: US2025329836A1
A battery module including a battery cell stack including a plurality of battery cells arranged in a stacking direction and a housing configured to accommodate the battery cell stack. The housing includes a bottom portion; a top portion; two side portions arranged opposite to each other in the stacking direction and interconnecting the bottom portion and the top portion in a height direction; and a side opening through which the battery cell stack is insertable into the housing in an insertion direction, the insertion direction being orthogonal to the stacking direction and being orthogonal to the height direction. The top portion includes an opened section overlaying the electrode terminals and the venting valves of the plurality of battery cells of the battery cell stack when the battery cell stack is accommodated in the housing.
Nº publicación: US2025329828A1 23/10/2025
Solicitante:
DONGGUAN NVT TECH LIMITED [CN]
Dongguan NVT Technology Limited
Resumen de: US2025329828A1
An electrochemical apparatus includes an electrode assembly, a battery cell shell, and an electrode terminal. The battery cell shell includes a shell body and an encapsulation portion, the encapsulation portion includes a first encapsulation area and a second encapsulation area, an end portion of the first encapsulation area facing away from the shell body has a first distance from the electrode assembly, and an end portion of the second encapsulation area facing away from the shell body has a second distance from the electrode assembly, the first distance being greater than the second distance. Since the first distance is greater than the second distance, the size of a head of a battery cell is reduced, and a side of the second encapsulation area facing away from the shell body can be used for avoiding other components, which is conducive to improving the energy density of the electrochemical apparatus.
BOPI
Sede Electrónica
