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POSITIVE ELECTRODE SHEET, PREPARATION METHOD THEREFOR AND USE THEREOF

Resumen de: AU2024350446A1

A positive electrode sheet, and a preparation method for the positive electrode sheet. The positive electrode sheet comprises a positive electrode current collector and a positive electrode active material layer arranged on the surface of at least one side of the positive electrode current collector, wherein the positive electrode active material layer comprises a dispersion aid, lithium iron phosphate, electrically conductive carbon black and carbon nanotubes. The materials in the positive electrode active material layer satisfy the relational expression: 30≤(B1×C1+B2×C2+B3×C3)/A×0.01≤500, where A is the mass ratio of the dispersion aid in the positive electrode active material layer, B1 is the specific surface area of lithium iron phosphate, C1 is the mass ratio of lithium iron phosphate in the positive electrode active material layer, B2 is the specific surface area of the electrically conductive carbon black, C2 is the mass ratio of the electrically conductive carbon black in the positive electrode active material layer, B3 is the specific surface area of the carbon nanotubes, and C3 is the mass ratio of the carbon nanotubes in the positive electrode active material layer. By rationally matching the specific surface areas of lithium iron phosphate, the carbon black and the carbon nanotubes with the addition amounts of lithium iron phosphate, the carbon black, the carbon nanotubes and the dispersion aid in the positive electrode active material layer, the good dist

Positive Electrode Active Material, Method For Preparing The Same, And Positive Electrode And Lithium Secondary Battery Which Include The Same

Resumen de: US20260221436A1

A positive electrode active material includes: (1) lithium nickel-based transition metal oxide particles in which a mole ratio of nickel in the total transition metals is 80 mol % or greater; and (2) a coating layer formed on a surface of the lithium nickel-based transition metal oxide particles. The lithium nickel-based transition metal oxide particles are in the form of a single particle consisting of one single nodule or a quasi-single particle, which is a composite of up to 30 nodules. The coating layer includes cobalt and aluminum, and the aluminum is contained in an amount of 0.1 mol. to 0.5 mol. with respect to 100 moles of the lithium nickel-based transition metal oxide. A method of preparing the positive electrode active material, a positive electrode including the positive electrode active material, and a lithium secondary battery including the positive electrode.

FAST-CHARGING SECONDARY BATTERY AND ELECTRICAL APPARATUS

Resumen de: US20260221597A1

A fast-charging secondary battery includes an electrode assembly. The electrode assembly includes a positive electrode plate, a negative electrode plate, and a separator. The positive electrode plate includes a positive electrode current collector, the positive electrode current collector integrally extending to form a plurality of positive electrode tabs. The negative electrode plate includes a negative electrode current collector, the negative electrode current collector integrally extending to form a plurality of negative electrode tabs. The separator includes a separator substrate, a first adhesive coating layer, and a second adhesive coating layer. The first adhesive coating layer contains a first polymer binder, an average particle size of the first polymer binder being in a range of 0.3 μm to 3 μm. The second adhesive coating layer contains a second polymer binder, an average particle size of the second polymer binder being in a range of 4 μm to 15 μm.

END COVER, BATTERY CELL, BATTERY, AND POWER CONSUMING DEVICE

Resumen de: US20260221635A1

0000 An end cover, a battery cell, a battery, and a power consuming device. The end cover includes: a cover body, a first insulating member, and a second insulating member. The first insulating member is fixedly connected to the cover body, and one end of the first insulating member forms a first connecting end. The second insulating member is fixedly connected to the cover body, and one end of the second insulating member forms a second connecting end. The first connecting end and the second connecting end are oppositely disposed and fixedly connected.

BATTERY PACK

Resumen de: US20260221566A1

A battery cell module includes a plurality of battery cells stacked in a first direction, and a first groove extending in the first direction is formed at each of two ends of the first side of the battery cell module. In a second direction, the two first side covers are arranged at two opposite sides of the battery cell module. First bodies of the two first side covers are substantially parallel to a third direction of the battery cell module, and each of the first side covers is provided with an abutting part. The abutting part extends from an edge of the first side cover and is substantially perpendicular to the first body and is connected to a groove wall of the first groove. The two second side covers and the two first side covers are fastened to each other. The abutting part is inserted into the first groove.

CARRY CASE FOR RECHARGEABLE EYEWEAR DEVICES

Resumen de: US20260215557A1

0000 A carry case for an electronics-enabled eyewear device has a case body defining a storage chamber between a pair of opposing main walls configured to bear against a front and a rear of the eyewear device when received in the storage chamber. A power source is housed by the case body. Two or more charging surfaces are electrically connected to the power source and located in the storage chamber for contact engagement with complementary contact formations on the eyewear device to enable charging of an onboard battery of the eyewear device. Each of the opposing main walls has mounted thereon at least one charging surface that extends along the respective main wall for a majority of a height dimension of the main wall. In some embodiments, each main wall carries a pair of charging pads spaced apart along a length dimension of the storage chamber, the charging pads being arranged such that the eyewear device is chargeable in any one of four different orientations in the storage chamber.

ALL-SOLID-STATE BATTERY AND ELECTRONIC DEVICE

Resumen de: US20260221625A1

An all-solid-state battery which includes: a battery element; a positive electrode terminal; and a negative electrode terminal. The battery element has a positive and negative electrode, and solid electrolyte layer between positive and negative electrode. Positive electrode terminal is connected to positive electrode on first surface of battery element. Negative electrode terminal is connected to negative electrode on second surface different from first surface of battery element. Negative electrode includes a material that forms alloy with Li. Negative electrode terminal has a main portion including material that forms alloy with Li and coating layer covering at least a part of outer surface of main portion. At least a part of a mounting surface of the negative electrode terminal is the coating layer. The coating layer includes at least one selected from the group consisting of W, Ti, Ni, Cr, Mn, Fe, Cu, and Co.

ELECTRONIC DEVICE AND BATTERY BALANCE CONTROL METHOD

Resumen de: US20260221788A1

0000 An electronic device and its battery balance control method are provided. The electronic device includes a battery assembly and a controller. The battery assembly includes at least two batteries and a switching component. The switching component is configured to switch a connection mode between the at least two batteries. The controller is connected to the switching component and configured to control the switching component to connect the at least two batteries in a corresponding target connection mode based at least on operating states of the at least two batteries. The operating states include at least one of a charging state or a discharging state, and the target connection mode includes at least one of a parallel connection or a series connection.

BATTERY AND ENERGY STORAGE DEVICE

Resumen de: US20260221511A1

0000 Provided are a battery and an energy storage device. The battery includes: a positive electrode plate, a negative electrode plate, a separator, and an electrolyte solution. The positive electrode plate includes a positive current collector and a positive active material layer. The negative electrode plate includes a negative current collector and a negative active material layer. The electrolyte solution includes an electrolyte, a solvent, and an additive. A ratio of a weight of the negative active material layer per unit area to a weight of the positive active material layer per unit area is z, and z ranges from 0.46 to 0.55. The additive includes additive A, and the additive A is a substance containing an oxalic acid structure.

SECONDARY BATTERY, BATTERY PACK, ELECTRONIC DEVICE, ELECTRIC TOOL, ELECTRIC AIRCRAFT, AND ELECTRIC VEHICLE

Resumen de: US20260221462A1

Provided is a secondary battery, where a positive electrode includes a first covered part covered with a positive electrode active material layer and a positive electrode active material non-covered part on a positive electrode foil, and a negative electrode includes a second covered part covered with a negative electrode active material layer and a negative electrode active material non-covered part on a negative electrode foil, the positive electrode active material non-covered part is joined to the positive electrode current-collecting plate at one end of an electrode wound body, and the negative electrode active material non-covered part is joined to the negative electrode current-collecting plate at the other end of the electrode wound body.

METAL COMPOSITE HYDROXIDE AND METHOD FOR PRODUCING THE SAME, POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERY AND METHOD FOR PRODUCING THE SAME, AND LITHIUM ION SECONDARY BATTERY USING THE SAME

Resumen de: US20260217558A1

A positive electrode active material includes a lithium-metal composite oxide which includes secondary particles with a plurality of aggregated primary particles, the secondary particles have a multilayer structure including at least a center at which the primary particles are densely disposed, a void at which the primary particles are more sparsely disposed than the center, and a dense solid portion at which the primary particles are densely disposed, from a center of the secondary particles toward a surface a compound containing tungsten and lithium is present in a concentrated state on a surface layer of primary particles present on a surface of or inside the secondary particles and at a grain boundary between the primary particles, wherein a tap density is 1 g/cm3 or more and 2 g/cm3 or less, and a BET specific surface area is 1.45 m2/g or more and 5.4 m2/g or less.

LASER WELDING METHOD

Resumen de: US20260216824A1

A laser welding method for jointing stacked metal foils in which a plurality of copper-based foils are stacked and a tab plate formed of a copper-based material is provided. The laser welding method includes placing one end of the stacked metal foils on the tab plate; irradiating a plurality of tack welding positions on the one end of the stacked metal foils with a blue laser beam; and irradiating a welding line on the tab plate along the one end of the stacked metal foils with the blue laser beam.

BATTERY MODULE WITH ENHANCED SAFETY

Resumen de: US20260221576A1

0000 A battery module includes a cell assembly including a plurality of battery cells stacked on each other; a module case configured to store the cell assembly in an inner space and having venting holes formed thereon; and a cover member including a plurality of fire-resistant layers, which have outlet holes respectively formed thereon and are spaced apart from each other, and coupled to the outer surface of the module case such that the venting holes and the outlet holes communicate with each other. The outlet holes of one fire-resistant layer and the outlet holes of the other fire-resistant layer facing the same may be configured so as not to overlap each other.

THERMAL REGULATION DEVICE, AND CHARGING DEVICE COMPRISING A THERMAL REGULATION DEVICE

Resumen de: US20260221535A1

0000 A thermal regulation device for an electrical component that is liable to release heat during operation. The device includes a first plate and a second plate, which is assembled with the first plate, each being delimited by edges, in order to form together a plurality of circulation channels for a heat transfer fluid. The plurality of channels define a channel zone, at least one of the plates is pressed in order to form a portion of the walls of the channels, the assembly of the two plates being carried out by laser welding at the walls of the channels. A zone defining at least partially the perimeter of the channel zone includes an assembly mechanism different from transmission laser welding, the different assembly mechanism is selected from among filler wire laser welding, adhesive bonding, friction stir welding, or a combination thereof.

CURRENT COLLECTOR, POLYESTER FILM, NEGATIVE-ELECTRODE CURRENT COLLECTOR, ELECTRIC POWER STORAGE ELEMENT, ELECTRIC VEHICLE, AND ELECTRIC FLYING OBJECT

Resumen de: US20260221463A1

The present invention addresses the problem of providing: a current collector in which it is possible to suppress the occurrence of voids caused by resin breakdown gases or the like that arise due to charging/discharging, etc., of a secondary battery, particularly when the current collector is used in a negative electrode; and a polyester film in which there is little occurrence of voids caused by breakdown gases or the like when charging/discharging is performed, particularly when the polyester film is used as a negative-electrode current collector. The means for solving the aforementioned problem is a current collector comprising a polyester film and a layer (M layer) that is composed of metal and/or a metal-based compound, the maximum reduction current peak intensity of the current collector in CV measurement (0.01-2.0 V, 10 cycles) being 0.000 mA/cm2 to 0.050 mA/cm2 inclusive.

Battery Module

Resumen de: US20260221571A1

0000 A battery module includes a module frame, a plurality of battery cells, a busbar frame, and a stopper. Each of the plurality of battery cells is accommodated in the module frame and includes an electrode lead. The busbar frame is disposed on one side of the plurality of battery cells and on which a busbar connected to the electrode lead is mounted. The stopper is disposed between the plurality of battery cells and the busbar frame, and is provided to absorb an impact applied to the battery cells. The stopper may include an exterior having an elastic material or a spongy material as well as an impact absorbing member disposed inside the exterior.

CHARGING CONTROL METHOD FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, CHARGING CONTROL SYSTEM FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, AND POWER SUPPLY DEVICE USING SAME

Resumen de: US20260221794A1

A disclosed charge control method is a charge control method for a nonaqueous electrolyte secondary battery. The secondary battery includes a positive electrode, a negative electrode, a separator, and a nonaqueous electrolyte. The negative electrode is a negative electrode in which a lithium metal deposits on the negative electrode during charging and the lithium metal dissolves into the nonaqueous electrolyte during discharging. The secondary battery includes a spacer for forming a space between the positive electrode and the negative electrode. The charge control method includes: a normal charging step of charging the secondary battery based on a first charging profile; a determination step of determining whether predetermined data regarding the secondary battery has reached a predetermined value; and a recovery charging step of, when it is determined that the predetermined data has reached the predetermined value, charging the secondary battery based on a second charging profile as subsequent charging. An average charge current value in the second charging profile is smaller than an average charge current value in the first charging profile.

ELECTROLYTE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Resumen de: US20260221513A1

An electrolyte for a lithium secondary battery of the embodiments of the present disclosure includes a fluorine-containing cyclic carbonate and a fluorine-containing linear asymmetric carbonate in a volume ratio of 1:9 to 8:2. Accordingly, the cycle life characteristics and high-voltage stability of a lithium secondary battery including the electrolyte may be improved.

RESIN BATTERY MODULE

Resumen de: US20260221569A1

The resin battery module includes: a plurality of pouch type or prismatic type battery cells including a battery cell terminal; a circuit board; a bus bar that is electrically connected to the battery cell terminal of each of the plurality of battery cells and the circuit board; a fire-resistant plate that is disposed between at least one set of adjacent battery cells among a plurality of battery cells arranged in one direction; a pair of end plates that are provided on both end sides of the plurality of battery cells arranged in one direction, respectively; and a pair of side plates that are coupled with the pair of end plates to form a surrounding structure accommodating the plurality of battery cells, in which at least one of the fire-resistant plate and the pair of end plates is formed of a cured product of a thermosetting resin composition.

CELL HOUSING, BATTERY, HEAT DISSIPATION ASSEMBLY FOR LAWN MOWER, MOWING ASSEMBLY, AND LAWN MOWER

Resumen de: US20260215363A1

The present disclosure provides a cell housing that includes a housing and also relates to a heat dissipation assembly, a mowing assembly, and a lawn mower using the same.. Four corners of the housing are detachably connected to anti-collision members each including a first transverse anti-collision part, a vertical anti-collision part, and a second transverse anti-collision part. The vertical anti-collision part is configured to surround a side of the housing. The first transverse anti-collision part and the second transverse anti-collision part extend horizontally, from upper and lower ends of the vertical anti-collision part, in a direction away from the vertical anti-collision part, and are configured to surround upper and lower ends of the housing, respectively.

LITHIUM SECONDARY BATTERY

Resumen de: US20260221599A1

0000 A lithium secondary battery includes a positive electrode, a negative electrode, a separator, a spacer, and a nonaqueous electrolyte. The separator is disposed between the positive electrode and the negative electrode, and the spacer is arranged between at least one of the positive electrode and the negative electrode and the separator. At the negative electrode, lithium metal deposits during charging, and the lithium metal dissolves during discharging, the spacer has a plurality of linear portions. The separator has an elongated shape having a length L1 in a first direction, and a length L2 in a second direction perpendicular to the first direction, where L1>L2, and an angle θ of the plurality of linear portions with respect to the first direction, where θ≤π/2, satisfies θ≥tan<−1 >(L2/L1).

POWER SUPPLY DEVICE

Resumen de: US20260221539A1

0000 A power supply device includes a rack holding one or more housings, a latch mechanism that holds each of the housings, the latch mechanism provided in a part of a facing region where each of the housings and an inner face of the rack face each other, and one or more air cooling mechanisms. In the facing region, the latch mechanism includes a projection biased to protrude toward the inner face of the rack from a surface of each of the housings, and a rack-side hole opened at a position in the rack facing the projection. Each housing includes a housing-side hole formed in a surface facing the facing region to allow the projection to protrude outward, and an elastic body that presses and seals a region including the housing-side hole from an inner face side of the housing in a state where the projection protrudes from the housing-side hole.

CATHODE MATERIAL COMPRISING IRON HYDROXY FLUORIDE

Resumen de: US20260217557A1

The present invention relates to a method of producing a cathode active material, comprising at least partially dissolving iron fluoride trihydrate (IFH) in a polar solvent, thereby obtaining a solution; adding water to the solution, thereby precipitating a compound comprising pyrochlore iron hydroxy-fluoride hydrate (Pyr-IHFH); separating the precipitated compound from the solution; and heating the separated, precipitated compound to a temperature between 50 and 400° C., thereby obtaining the cathode active material comprising pyrochlore iron hydroxy-fluoride (Pyr-IHF), wherein adding water to the solution converts IFH to Pyr-IHFH. The invention further relates to a cathode active material comprising Pyr-IHF, a cathode comprising the cathode active material and a battery comprising the cathode.

BATTERY CELL TEMPERATURE MEASUREMENT SYSTEM

Resumen de: US20260221628A1

A system for determining a temperature value of a battery cell is described. The system includes a post directly couplable to the battery cell. The post has a post temperature corresponding to a temperature associated with the battery cell. The system also includes a thermally conductive pad coupled to the post and a sensor. The sensor is physically coupled to the thermally conductive pad and configured to measure the temperature associated with the battery cell via the thermally conductive pad and the post. The system also includes a battery management system (BMS) that includes processing circuitry in communication with the sensor and configured to determine the temperature value of the battery cell based on the measured temperature associated with the battery cell.

CYLINDRICAL NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Nº publicación: US20260221525A1 30/07/2026

Solicitante:

PANASONIC INTELLECTUAL PROPERTY MAN CO LTD [JP]
Panasonic Intellectual Property Management Co., Ltd.

Resumen de: US20260221525A1

A disclosed cylindrical nonaqueous electrolyte secondary battery includes a bottomed cylindrical battery case, a spirally-wound type electrode group, a nonaqueous electrolyte, a sealing member, a positive electrode lead, and a negative electrode lead. The electrode group includes a positive electrode, a negative electrode, and a separator. The negative electrode is a negative electrode that expands during charging and contracts during discharging. The battery case has an outer diameter of 15 mm or less. The electrode group includes a hollow portion at a center of the electrode group. The negative electrode lead is connected to a portion of the negative electrode that faces the hollow portion. In a discharged state, 0.25