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CIRCUIT AND METHOD FOR MONITORING THE CHARGE LEVEL OF A BATTERY

Resumen de: US2025258237A1

An electronic device comprising a rechargeable battery and a circuit and a method for monitoring the charge level of the battery is provided. An example device comprises: a rechargeable battery; a first circuit comprising a processor, and a voltage comparator configured to compare the voltage of the rechargeable battery with a limiting voltage; and a second circuit, coupled to the first circuit, comprising a memory of non-volatile type and configured to initialize the processor of the first circuit if the voltage of the rechargeable battery is higher than the limiting voltage.

CYLINDRICAL BATTERY AND ELECTRIC APPARATUS INCLUDING CYLINDRICAL BATTERY

Resumen de: US2025260042A1

A cylindrical battery and an electric apparatus, including an electrode assembly. The electrode assembly includes a positive electrode plate, a separator, and a negative electrode plate stacked and wound together. The positive electrode plate includes a positive current collector. The positive current collector has a first surface, the first surface is provided with an active material layer, an insulation layer, and an uncoated foil area arranged in order along an axial direction of the cylindrical battery. The electrode assembly further includes a flattened part, the flattened part being formed by bending and overlapping the uncoated foil area towards a central axis of winding of the electrode assembly and having a flattened surface. The insulation layer provides support for the positive current collector, preventing a short circuit caused by the flattened part folding over to exceed the separator and contact the negative electrode plate.

Lithium Secondary Battery

Resumen de: US2025260044A1

A lithium secondary battery includes a positive electrode, a separator, and a negative electrode, wherein the negative electrode includes a silicon-based active material and wherein a resistance ratio represented by Equation 1 is 100% to 140%.

BATTERY COMPONENT FABRICATION METHOD AND SYSTEM

Resumen de: US2025259985A1

A battery component fabrication method includes compressing a powder mixture to provide a composite film layer, surface treating the composite film layer, and compressing the composite film layer together with a foil layer to provide an electrode. The electrode provided by the method can be considered a dry electrode for a lithium-ion battery.

PRESSING APPARATUS, BATTERY PRODUCTION LINE, AND PRESSING METHOD

Resumen de: US2025260043A1

This disclosure discloses a pressing apparatus, a battery production line, and a pressing method. The pressing apparatus is configured to press a workpiece queue. The pressing apparatus includes: a placement table, configured to support the workpiece queue, where the workpiece queue includes a plurality of workpieces arranged along a first direction; and at least one pressing assembly, where each pressing assembly includes a first presser and a stopper arranged opposite the first presser, where the first presser is configured to apply an acting force along the first direction to the workpiece queue, the stopper is configured to block the workpiece queue, and the first presser and the stopper are constructed to be capable of moving towards or away from each other along the first direction, where the pressing assembly is constructed to be capable of moving along a second direction intersecting the first direction.

CARBON-FREE CATHODES FOR LITHIUM SULFUR BATTERIES

Resumen de: US2025260009A1

Presented herein is a cathode material for a carbon-free (including relatively carbon-free) cathode, the cathode material comprising (i) sulfur and/or a lithium sulfide and (ii) a different, non-carbon electroactive material such as a metal chalcogenide. In certain embodiments, it is found that the carbon-free cathode material facilitates improved ion transport while maintaining satisfactory mechanical stability and electrical connection of the cathode without use of conductive carbon additives.

ANODE ASSEMBLY, ALL-SOLID-STATE BATTERY INCLUDING THE SAME, AND METHOD OF MANUFACTURING THE SAME

Resumen de: US2025260017A1

An anode assembly, an all-solid-state battery including the same, and a method of manufacturing the same are provided. The anode assembly comprises a first layer comprising a lithium halide, LiX, where X is a halogen element; a second layer comprising amorphous carbon; and an anode current collector. The anode assembly provides excellent charging/discharging efficiency and capacity retention rate of the all-solid-state battery.

SOLID STATE ELECTROLYTE BATTERY CELL IN ELONGATED CONTAINER

Resumen de: US2025260106A1

A battery includes an elongated container including at least one elongated wall extending in a longitudinal direction between a first end wall and a second end wall; and a plurality of battery units stacked inside of the container along a stacking direction that intersects the at least one elongated wall. Each battery unit includes an anode, a cathode and a solid electrolyte between the anode and the cathode. Each battery unit has a length in the longitudinal direction, a thickness in the stacking direction and a width in a lateral direction. The longitudinal direction and the lateral direction are perpendicular to the stacking direction.

SECONDARY BATTERY AND BATTERY PACK

Resumen de: US2025260129A1

A secondary battery having superior reliability is provided. The secondary battery includes an electrode wound body, an upper insulating member, a lower insulating member, and a battery can. The electrode wound body includes a stacked body that includes a first electrode, a first separator, a second electrode, and a second separator. The stacked body is wound around a central axis extending in a height direction. The electrode wound body includes an upper end face, a lower end face, and a side surface. The upper end face and the lower end face are opposed to each other in the height direction. The side surface couples the upper end face and the lower end face to each other. The upper insulating member covers an upper side surface part of the side surface of the electrode wound body. The upper side surface part is positioned on a side of the upper end face. The lower insulating member covers a lower side surface part of the side surface of the electrode wound body. The lower side surface part is positioned on a side of the lower end face. The battery can includes a container and a cover part and contains the electrode wound body. The container includes a lower end part and an upper end part. The lower end part is closed by a bottom part. The upper end part is positioned on a side opposite to the lower end part in the height direction and has an opening through which the electrode wound body is passable. The cover part closes the opening of the container. A tensile strength of

POWER STORAGE DEVICE

Resumen de: US2025260117A1

A power storage device includes a plurality of power storage modules, a case that accommodates the plurality of power storage modules, and a coupling bracket disposed between two of the plurality of power storage modules, which are arranged in an X direction. The case includes an upper cover that covers the plurality of power storage modules from above. The coupling bracket includes an upper surface. The upper surface of the coupling bracket is in surface contact with the upper cover.

Pouch Type Secondary Battery and Production Method Thereof

Resumen de: US2025260136A1

Provided are the system and method of molding a gas collection portion of a battery pouch, and more particularly, the system and method of molding a gas collection portion to collect gas in a portion where an electrode tab welding portion of a battery pouch is disposed. In the system and method of molding the gas collection portion of the battery pouch according to the present disclosure, the electrode tab welding portion may also be molded when the battery pouch is molded, and the gas generated in the battery cell may thus be collected in a space formed between the pouch inclined surfaces, thereby preventing or delaying venting of the battery pouch.

SECONDARY BATTERY AND METHOD FOR MANUFACTURING SECONDARY BATTERY

Resumen de: US2025260131A1

A secondary battery includes: a positive electrode layer; a negative electrode layer; a solid electrolyte layer (a first solid electrolyte layer and a second solid electrolyte layer) provided between the positive electrode layer and the negative electrode layer, containing a solid electrolyte through which lithium ions migrate; and a separator that is in contact with the solid electrolyte layer between the positive electrode layer and the negative electrode layer. A plurality of holes for supplying the electrolytic solution contained within the separator to the solid electrolyte layer are formed in the surface of the separator.

High-Loading Positive Electrode, Slurry for Positive Electrode, and Lithium Secondary Battery

Resumen de: US2025260010A1

Provided is a positive electrode active material layer having a loading amount of 450 mg/25 cm2 or more, wherein the positive electrode active material layer includes lithium iron phosphate, a fluorine-based binder, a rubber-based binder, and a conductive material, wherein the rubber-based binder includes a first hydrogenated nitrile butadiene rubber having a weight average molecular weight (Mw) of 10,000 g/mol to 100,000 g/mol, and a second hydrogenated nitrile butadiene rubber having a weight average molecular weight (Mw) of 150,000 g/mol or more, and the second hydrogenated nitrile butadiene rubber is included in an amount of 0.2 wt % to 0.8 wt % based on the total weight of the positive electrode active material layer.

ELECTROLYTE FOR SECONDARY BATTERY, SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK, AND ELECTRIC APPARATUS

Resumen de: US2025260059A1

This application provides an electrolyte for secondary battery, a secondary battery, a battery module, a battery pack, and an electric apparatus. The electrolyte for secondary battery includes a fluoroether solvent and an additive, where the additive includes one or more of ionic liquid additive, amide compound additive, cation shielding additive, and alloy additive. In this application, with one or more of ionic liquid additive, amide compound additive, cation shielding additive, and alloy additive added in an electrolyte containing the fluoroether solvent, interface stability of the secondary battery is significantly enhanced, and the cycling performance, storage stability, and overall safety of the secondary battery are improved.

ELECTROLYTE SOLUTION, BATTERY CONTAINING SAME, AND POWER CONSUMING APPARATUS

Resumen de: US2025260056A1

Embodiments of this application provide an electrolyte solution, a battery containing the same, and a power consuming apparatus. The electrolyte solution includes: a first additive, where the first additive includes at least one of a compound containing at least groups represented by formula (I) and formula (II), and a compound containing at least groups represented by formula (I) and formula (III). Cycle performance and storage life of the battery containing the electrolyte solution are both improved.

LONG-CYCLE-LIFE, HIGH-CAPACITY SILICON ANODES AND METHODS OF MAKING AND USING THE SAME

Resumen de: US2025260005A1

Materials, methods, electrodes, and devices related to high-energy-density, long-life Li-ion batteries are provided. The lithium-ion anode material contains a porous core with silicon and optionally carbon nanotubes, and a dense shell made from lithium vanadium oxide having a disordered rocksalt structure. The lithium vanadium oxide functions as a solid-state mediator layer for the anode material and overcomes the well-known problem of significant volume increase when silicon is lithiated. The lithium vanadium oxide possesses mechanical robustness and prevents electrolyte penetration. For these reasons, the anode material forms a highly stable interface with the battery electrolyte. Experimental data is presented and discussed to demonstrate embodiments of the technology. It is shown that the silicon anode material can reversibly deliver a specific capacity higher than 2500 mA·h/g. The anode material exhibits excellent cycling stability and calendar life at room temperature as well as elevated temperature.

ELECTROLYTE COMPOSITION, SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK, AND ELECTRICAL DEVICE

Resumen de: US2025260057A1

This application provides an electrolyte composition, a secondary battery, a battery module, a battery pack, and an electrical device. The electrolyte composition is a non-Newtonian fluid electrolyte composition. The electrolyte composition can improve the impact resistance and safety of the battery by a thixotropic action that occurs in response to an applied external force.

ENERGY STORAGE APPARATUS

Resumen de: US2025260118A1

An energy storage apparatus includes an energy storage assembly including a spacer, first and second energy storage devices respectively positioned on one side and an other side in a first direction of the spacer main body, where the spacer includes a first wall opposed to the first energy storage device in a second direction and protruding on the one side in the first direction from the spacer main body, and a second wall opposed to the second energy storage device in the second direction and protruding on the other side in the first direction from the spacer main body, the second wall is positioned on one side in a third direction, relative to the first wall, and the energy storage assembly includes, on the other side, a first opening connecting a first space between the spacer main body and the second energy storage device with an external space.

BATTERY STRING PRE-CHARGE OPERATION

Resumen de: US2025260245A1

In some implementations, a controller may select, using one or more selection criteria, a first battery string, from multiple battery strings of a battery pack, for a pre-charge operation of the battery pack. The controller may detect a failure of the pre-charge operation via a first pre-charge circuit of the first battery string. The controller may select, using the one or more selection criteria, a second battery string, from the multiple battery strings, for the pre-charge operation based on the failure meeting one or more failure conditions. The controller may perform, via a second pre-charge circuit of the second battery string, the pre-charge operation. The controller may configure the first battery string for operation based on the pre-charge operation via the second battery string being successful.

SECONDARY BATTERY AND BATTERY PACK INCLUDING SECONDARY BATTERIES

Resumen de: US2025260116A1

A quadrangular secondary battery includes a shallow-drawn battery can and a lid plate welded together for sealing. A battery pack includes such secondary batteries without causing a busbar to be larger or to interfere with duct placement and without causing stress concentration on welding beads under a restraining load. A secondary battery includes an electricity generator, a metal battery can, a nonaqueous electrolyte, a metal lid plate, and a pair of external terminals. The battery can is quadrangular and shallow-drawn, accommodates the electricity generator placed laterally, and includes a flange on a periphery of its opening. The nonaqueous electrolyte fills the battery can accommodating the electricity generator. The lid plate includes an outer edge welded to the flange on the battery can and covers the battery can. The lid plate includes a flat raised portion extending beyond the outer edge in an inner area of the outer edge.

BATTERY AND ELECTRICAL DEVICE

Resumen de: US2025260141A1

A battery includes an electrode plate and a tab. The electrode plate includes a current collector and an active material layer disposed on the current collector. The tab is connected to the current collector. The tab protrudes beyond the electrode plate along a width direction of the electrode plate. Along the width direction of the electrode plate, the tab includes a first region and a second region. The first region is located between the second region and the active material layer, a thickness of the first region is t1, and a thickness of the second region is t2, and 0.5%≤(t1−t2)/t1≤5%.

BATTERY MOUNT AND WORKING MACHINE INCLUDING THE SAME

Resumen de: US2025260115A1

A battery mount includes a placement base, a restriction member to restrict rearward movement of the battery, and a securing assembly to secure the battery that extends from a position above or an upper portion of the restriction member to the battery's forward surface. The securing assembly includes a first securer at the same side of the battery as the battery's upper surface, a second securer at the same side of the battery as the battery's forward surface, and a coupler to couple the first and second securers to each other. The coupler includes an inclined portion provided in one of the first and second securers and inclined such that a distance to the battery's rear surface decreases upward, and a retention member to retain a position at which the other of the first and second securers is coupled to the inclined portion such that the position is adjustable.

ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE

Resumen de: US2025260014A1

An electrochemical device includes an electrode assembly. The electrode assembly includes a positive electrode plate. The positive electrode plate includes a positive current collector and a positive active material layer disposed on the positive current collector. The positive active material layer includes a positive active material and graphene. At least a part of the graphene is disposed on surfaces of particles of the positive active material. The technical solution of this application not only increases a compacted density of the positive active material layer and an energy density of the electrochemical device, but also reduces polarization and increases charging speed of the electrochemical device.

NEGATIVE ELECTRODE ACTIVE MATERIAL, METHOD FOR PRODUCING SAME, AND LITHIUM SECONDARY BATTERY HAVING NEGATIVE ELECTRODE INCLUDING SAME

Resumen de: US2025260013A1

The present disclosure relates to a negative electrode active material for a lithium secondary battery, including: a carbon-based material; a silicon coating layer disposed on the carbon-based material; and a carbon coating layer disposed on the silicon coating layer, wherein the silicon coating layer includes silicon particles and a silicon-based amorphous matrix.

POSITIVE ELECTRODE ACTIVE MATERIAL FOR SODIUM ION BATTERY, SODIUM ION BATTERY MADE FROM SAME, BATTERY MODULE, BATTERY PACK AND APPARATUS

Nº publicación: US2025260008A1 14/08/2025

Solicitante:

CONTEMPORARY AMPEREX TECH HONK KONG LIMITED [CN]
CONTEMPORARY AMPEREX TECHNOLOGY (HONK KONG) LIMITED

Resumen de: US2025260008A1

The present disclosure relates to a sodium ion battery that includes a positive electrode plate, a negative electrode plate, and a separator disposed therebetween. The positive electrode plate includes a positive electrode current collector, on at least one side of which a positive electrode active material layer is disposed. Specifically, the positive electrode active material mainly includes an O3-phase layered metal oxide having the following molecular formula: NaaMbNicFedMneO2+δ (Formula I), in which M is a metal cation different from Ni, Fe and Mn; 0.67