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ELECTROLYTE AND PREPARATION METHOD THEREFOR, SECONDARY BATTERY, AND POWER-CONSUMING DEVICE

Resumen de: WO2025086606A1

The present invention relates to an electrolyte and a preparation method therefor, a secondary battery, and a power-consuming device. The electrolyte comprises an electrolyte salt, a first solvent and a composite flame retardant, wherein the composite flame retardant comprises a flame retardant and a gel polymer, the flame retardant is present in the internal pores of the gel polymer, the electrolyte salt is dissolved in the first solvent, and the composite flame retardant is dispersed in the first solvent. When the electrolyte is used in a secondary battery, it is beneficial to prolonging the service life of the battery and reducing the damage caused by thermal runaway of the battery.

SECONDARY BATTERY CASE MANUFACTURING DEVICE

Resumen de: US2025135522A1

A secondary battery case manufacturing device includes a die including a first surface and a second surface that are opposite to each other, a punch hole extending through the first surface and the second surface, a punch arranged to face the first surface and configured to press a workpiece toward the punch hole in a first direction, a knockout member arranged to face the second surface and configured to press the workpiece in a second direction opposite to the first direction, and a stamp member on the knockout member and configured to imprint a pattern on the workpiece as the knockout member comes into contact with the workpiece.

ROLLER AND ROLLING APPARATUS

Resumen de: US2025135516A1

A roller is configured to roll an electrode plate, and the roller includes a rolling portion and a temperature regulating assembly. A rolling surface for rolling the electrode plate is formed on an outer surface of the rolling portion, and a mounting hole is provided inside the rolling portion along an axial direction of the rolling portion. The temperature regulating assembly is provided in the mounting hole and configured to exchange heat with the rolling portion. A rolling apparatus has a first roller and a second roller. The first roller and the second roller are jointly configured to roll an electrode plate. When the rolling portion is rolling an electrode plate, the temperature regulating assembly regulates a temperature of the rolling portion along the axial direction, so as to adjust the radial deformation of the rolling portion depending on the rules of thermal expansion and contraction.

THREE LAYERED BUBBLE SHEET COOLING PLATE

Resumen de: US2025135523A1

A method of making a cold plate includes stacking three aluminum sheets on top of each other while each of the three aluminum sheets is generally flat. An edge of the three aluminum sheets are secured together. A top one of the aluminum sheets is welded to a middle one of the aluminum sheets at a plurality of first locations and a bottom one of the aluminum sheets is welded to the middle one of the aluminum sheets at a plurality of second locations different than the plurality of first locations. A pressurized medium is supplied between the top one of the aluminum sheets and the bottom one of the aluminum sheets to separate the top one of the aluminum sheets from the bottom one of the aluminum sheets and deform the middle one of the aluminum sheets.

CURE ACCELERATION OF THERMAL INTERFACE ADHESIVES VIA ADJACENT COMPONENT HEATING

Resumen de: US2025135730A1

Aspects of the disclosure include systems and methods that leverage adjacent component heating to accelerate the cure time of thermal interface adhesives. An exemplary method can include receiving a battery pack and a thermal management system including a cooling plate, an upper tray, and a lower tray joined to opposite surfaces of the cooling plate to define an enclosed volume therebetween. The method includes wetting an interface between the battery pack and the thermal management system with an adhesive and joining the battery pack to the thermal management system at the interface. The method includes directing a heating fluid through the enclosed volume, thereby heating the adhesive. The method includes, responsive to determining that a temperature of the adhesive has reached a target temperature, maintaining the temperature for a soak time according to a cure curve of the adhesive to achieve a target bond strength.

DEVICE AND METHOD FOR OPTICAL COMMUNICATION BETWEEN MASTER BMS AND SLAVE BMS

Resumen de: US2025140949A1

An optical communication device includes a first detachable communication module structure configured to block light between an inside and an outside. The first detachable communication module structure may include: a first terminal on the outside; a second terminal on the outside; a first master light emitter attached to a first surface of the inside and coupled to the first terminal; and a first slave light receiver attached to a second surface of the inside and coupled to the second terminal, the first surface being opposite to the second surface.

BATTERY MODULE AND BATTERY PROTECTION METHOD THEREOF

Resumen de: US2025140946A1

A battery module and a battery protection method thereof are provided. The battery module includes a battery cell pack and a control circuit. The battery cell pack includes a plurality of battery cells connected in series. The control circuit detects an internal temperature of the battery module and determines whether the internal temperature of the battery module is greater than a temperature threshold value. When the internal temperature is greater than the temperature threshold value, the control circuit turns on a self-balancing function.

BATTERY SYSTEM

Resumen de: US2025140947A1

A battery system includes a plurality of cells, a hermetically sealed pack case, a first abnormality detection sensor, a second abnormality detection sensor, and a controller. The plurality of cells each includes a hermetically sealed cell case. The cell case includes a first pressure valve configured to irreversibly rupture by a predetermined activation pressure. The controller is configured to execute an abnormality determination process of determining that an abnormality occurs in at least one of the plurality of cells if the pressure value detected by the first abnormality detection sensor is higher than a predetermined threshold value and the detection value detected by the second abnormality detection sensor is higher than a predetermined threshold value.

BATTERY PACK MODULE

Resumen de: US2025140945A1

A battery pack module, for example, is used in an electric or hybrid aircraft. A battery pack module includes: a plurality of battery cells arranged in a battery cell array; a battery management system electrically connected to the battery cell array; an enclosure surrounding the battery cell array; a vent connected to the enclosure and arranged to provide a fluid flow path between an interior of the enclosure and an external environment; a disc arranged to provide a fluid seal between the interior of the enclosure and the vent, the disc configured to rupture upon a pressure differential between the interior of the enclosure and the external environment exceeding a predetermined threshold; and a sensing circuit connected between the disc and the battery management system and configured to provide a signal to the battery management system upon rupture of the disc.

DUAL-MODE OPTIMIZATION FOR A DISTRIBUTED COOLING SYSTEM

Resumen de: US2025140961A1

Typically, electric power sources, such as batteries and fuel cells, require cooling to temperatures near or below ambient temperature for safe and efficient operation. Traditional cooling systems are not be able or practical to cool the components to the required temperatures, due to the lack of temperature differential between the required cooling temperature and the ambient temperature, which drives the heat transfer. Disclosed embodiments optimize the efficiency of a cooling system based on ambient conditions. In particular, embodiments determine input parameters from one or more sensed parameters, such as ambient temperature and ambient pressure, and utilize these input parameters in a process that maximizes the operation of cooling units in the most efficient mode.

BATTERY FOR ENERGY STORAGE

Resumen de: US2025141068A1

An energy storage battery comprising: an electrochemical cell; an electrical collector which is coupled to an end of the electrochemical cell; a container which has a first wall and houses, on the inside, the electrochemical cell so that the electrical collector is arranged close to the first wall; an outer body, which constitutes an electrical pole of the battery and is arranged on an outer surface of the first wall; and a weld which establishes an electrical connection between the electrical collector and the outer body; wherein the weld is at least partially arranged on the outside of the container.

BATTERY AND MODULE

Resumen de: US2025141065A1

A battery includes a layer-type electrode body, a laminate exterior body, a positive electrode tab, and a negative electrode tab. In the electrode body, a positive electrode sheet and a negative electrode sheet are alternately layered in a layering direction via a separator sheet. The positive electrode tab protrudes from the laminate exterior body toward one side in a first direction orthogonal to the layering direction. The negative electrode tab protrudes from the laminate exterior body toward the one or another side in the first direction. The electrode body has an overlap region in which only plural separator sheets overlap at both edge regions in a second direction orthogonal to the layering direction and to the first direction. At least one of the two overlap regions has plural welded portions at which the plural separator sheets are welded. The plural welded portions are discretely formed along the first direction.

BATTERY CELL CURRENT COLLECTOR TABS HAVING FEATURES TO FACILITATE ELECTRICAL CONNECTIONS

Resumen de: US2025141063A1

A battery cell includes a housing enclosing an anode and a cathode, and an electrode assembly disposed in the housing, the electrode assembly including a plurality of electrode layers, each of the plurality of electrode layers having a respective tab configured to electrically connect the plurality of electrode layers to one another. A first electrode layer includes a first tab, the first tab being offset from another tab of another electrode layer.

POLE PIECE, CORE, AND CELL

Resumen de: US2025141060A1

Provided are a pole piece, a core, and a cell. The cell includes the pole piece. The pole piece includes a pole piece body and tabs. Multiple tabs are disposed on an edge of the pole piece body and at intervals in a first direction. A notch is formed at the end of each tab facing away from the pole piece body.

ELECTRODE ASSEMBLY AND BATTERY

Resumen de: US2025141059A1

An electrode assembly includes at least two electrode plates stacked on each other; the first electrode plate is provided with a first groove, and the first current collector is connected to a first tab in the first groove; the second electrode plate is provided with a first avoidance groove, and the first avoidance groove and the first groove are disposed opposite to each other along a stacking direction of the electrode plates; and the first tab is completely covered by a projection of the first avoidance groove on the first electrode plate. Due to arrangement of an avoidance groove, an increase in a thickness of an electrode assembly caused by a tab may be reduced, so that the thickness of the electrode assembly can be reduced, reducing a volume of the electrode assembly, and further improving an energy density of a battery.

POWER STORAGE DEVICE AND METHOD FOR PRODUCING POWER STORAGE DEVICE

Resumen de: US2025141072A1

A power storage device comprising: an electrode body that includes electrodes; a current collector that extends from the electrodes; an electrode terminal that is electrically connected to the electrode body via the current collector; an exterior film that is wrapped around the electrode body in such a manner as to have an opening; and a lid body that is disposed in the opening, wherein the lid body covers at least a part of the current collector.

METHOD FOR RESTORATION PERFORMANCES OF AGED NICKEL-RICH NMC CATHODE MATERIAL FOR LITHIUM-ION SECONDARY BATTERY

Resumen de: US2025140782A1

Method for restoration performances of aged nickel-rich NMC cathode material for lithium-ion secondary battery, the method including: forming a cathode with the aged nickel-rich NMC cathode material and carbon black; and exposing the cathode to diethyl phosphoramidate at an exposure temperature below 160° C. so as to obtain a lithium phosphate protective layer on the cathode.

ELECTROCHEMICAL APPARATUS AND ELECTRONIC DEVICE

Resumen de: US2025140796A1

An active material layer is provided with at least one first pore structure, and the active material layer satisfies the following conditions: (a) 0≤M/d≤0.5, where M is a mass percentage of the first active material in the active material layer, and d is a ratio of a depth of the first pore structure to a thickness of the active material layer; and (b) −1%≤0.2M−S≤3%, where S is a porosity of the active material layer. Adding the first active material with a larger gram capacity can increase the capacity of the electrochemical apparatus.

POSITIVE ELECTRODE PLATE, ELECTRODE ASSEMBLY, BATTERY CELL, BATTERY, AND ELECTRIC DEVICE

Resumen de: US2025140797A1

This application discloses a positive electrode plate, an electrode assembly, a battery cell, a battery, and an electric device. The positive electrode plate includes a positive electrode current collector and a positive electrode active substance layer located on a surface of the positive electrode current collector. The positive electrode active substance layer includes a Li-containing active material and a Na-containing active material, where a mass ratio of the Na-containing active material and the Li-containing active material is P1, satisfying 0.02≤P1≤50. Having a positive electrode active substance layer that employs a combination of Li-containing and Na-containing active materials, the positive electrode plate can have both high energy density and high low-temperature capacity retention rate.

LITHIUM METAL BATTERY AND METHOD OF MANUFACTURING THE SAME

Resumen de: US2025140799A1

A lithium metal battery may include an anode current collector, a protective film on the anode current collector, a separator, a gel polymer electrolyte, and a cathode, wherein the lithium metal battery may further include an anode active material layer between the anode current collector and the protective film or is free of the anode active material layer, the protective film includes boron nitride (BN) and a binder, and the gel polymer electrolytes contains a gel polymer, BN, a nitrile-based compound, and a liquid electrolyte.

SECONDARY CELL WITH A LITHIUM ION STORAGE LAYER

Resumen de: US2025140807A1

A secondary cell comprising an anode, a cathode, an electrolyte, and optionally a separator, characterized in that the anode comprises a substrate and a lithium ion storage layer comprising particles, wherein the lithium ion storage layer is deposited on the substrate; a method for its manufacturing; and a vehicle comprising such secondary cell.

Sealed Portion Folding Apparatus and Method for Pouch-Shaped Battery Cells

Resumen de: US2025135524A1

The present invention relates to a sealed portion folding apparatus and method for pouch-shaped battery cells, and more particularly to a sealed portion folding apparatus for pouch-shaped battery cells including a lower unit configured to allow a sealed portion to be seated thereon. The lower unit includes a lower folding block configured to perform horizontal reciprocation and upward and downward movement, an upper unit including an upper folding block configured to perform horizontal reciprocation and upward and downward movement and to press the sealed portion so as to be bent to a predetermined angle, a lower folding guide unit configured to perform upward and downward movement and to guide the sealed portion so as to be bent to a predetermined angle, and an upper folding guide unit configured to perform upward and downward movement and to guide the sealed portion so as to be bent to a predetermined angle.

PUNCHING OIL COATER AND NOTCHING APPARATUS INCLUDING THE SAME

Resumen de: US2025135486A1

A punching oil coater includes a coating device configured to correspond to feed rollers that contact an electrode plate and move the electrode plate and are at different positions from each other, and rotate to contact and coat a pair of uncoated portions of mutually symmetrical surfaces of the electrode plate with punching oil as the feed rollers press the pair of uncoated portions against the coating device and move the electrode plate; a sprayer configured to spray the punching oil onto the coating device; a punching oil supply device configured to uniformly control a flow amount and flow rate of the punching oil supplied to the sprayer; and a coating controller configured to control a punching oil coating operation for the electrode plate.

ELECTRODE ROLLING DEVICE

Resumen de: US2025135517A1

An electrode rolling device acquires thicknesses of an electrode sheet, Tc at a center portion in a width direction, Twe at an end portion on a first side, Tde at an end portion on a second side, Twc at a first intermediate portion, which is set between the center portion and the end portion on the first side, and Tdc at a second intermediate portion, which is set between the center portion and the end portion on the second side. The electrode rolling device determines a deviation ΔTwe between the thickness Tc and Twe, a deviation ΔTwc between the thickness Tc and Twc, a deviation ΔTde between the thickness Tc and Tde, and a deviation ΔTdc between the thickness Tc and Tdc, and performs control so as to reduce the deviation ΔTwe or ΔTwc, whichever is larger, and to reduce the deviation ΔTde or ΔTdc, whichever is larger.

SURFACE TREATMENT JIG

Nº publicación: US2025135481A1 01/05/2025

Solicitante:

NHK SPRING CO LTD [JP]
NHK SPRING CO., LTD

Resumen de: US2025135481A1

A surface treatment jig for performing surface treatment of an exterior body of an accumulator including a bottom, a shell and a port in a state where the surface treatment jig is connected to the exterior body and supports the exterior body includes: a support portion configured to support the accumulator; and a hook portion connected with the support portion. The support portion has a shape tapered near the hook portion.