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Power Storage Module and Power Storage Device

Resumen de: US2025349984A1

A power storage module comprises a plurality of cells and a bus bar. Each of the cells includes a prismatic case, an electrode terminal, and a power generation element. An outer surface of the prismatic case includes a wide face having a rectangular shape and a side face. The cells are stacked together. The electrode terminal protrudes from the side face toward an outside of the prismatic case. The electrode terminal includes an upper end portion and a lower end portion. The lower end portion is positioned inside the prismatic case. The upper end portion is positioned outside the prismatic case. The bus bar is connected to the electrode terminal at a position in the long-side direction between the upper end portion of the electrode terminal and the side face of the prismatic case.

THERMAL INSULATION MEMBER, PACKAGING METHOD, BATTERY PACK, AND VEHICLE

Resumen de: WO2025232871A1

The present application provides a thermal insulation member, comprising: a thermal insulation core material, comprising a bottom surface and a top surface arranged opposite to each other, two side surfaces arranged opposite to each other, and two end surfaces arranged opposite to each other; and a film material, wrapping the outer side of the thermal insulation core material to package the thermal insulation core material, the film material being folded over from the bottom surface to the top surface along the two side surfaces, respectively, and forms a first overlapping part on the top surface. The film material further forms second overlapping parts on the two end surfaces, respectively, and each second overlapping part comprises a first overlapping layer, a second overlapping layer, and a third overlapping layer which are stacked. The first overlapping layer is folded over from the corresponding side surface to the thermal insulation core material. The second overlapping layer is folded over from the top surface to the corresponding end surface to partially overlap the corresponding first overlapping layer. The third overlapping layer is folded over from the bottom surface to the end surface to partially overlap the corresponding second overlapping layer. The film material further comprises a first attaching part, and the first attaching part extends from the third overlapping layers to the top surface and is attached to the corresponding part of the film material. The p

STACKING DEVICE, STACKED BATTERY CELL STRUCTURE AND MANUFACTURING METHOD FOR STACKED BATTERY CELL STRUCTURE

Resumen de: WO2025232655A1

Provided in the present invention are a stacking device, a stacked battery cell structure and a manufacturing method for a stacked battery cell structure. The stacking device is used for stacking composite electrode sheet strips. The stacking device comprises a frame; a transfer assembly, rotatably provided on the frame around a first axis, the transfer assembly being provided with a plurality of suction stations, the plurality of suction stations being arranged in the circumferential direction of the first axis, and each suction station having a vacuum state for suctioning a composite electrode sheet strip and a vacuum breaking state for releasing the composite electrode sheet strip; and a stacking assembly, located on one side of the transfer assembly, the stacking assembly comprising a mounting component and a stacking component, the mounting component being arranged on the frame, the stacking component being configured to be capable of clamping the composite electrode sheet strip, and the stacking component being movably mounted on the mounting component, so that the stacking component can get close to or away from the transfer assembly. The technical solution of the present invention solves the problem of difficulty in effectively improving the stacking efficiency of stacked battery cells in the prior art.

ESTIMATION METHOD, ESTIMATION PROGRAM, ESTIMATION APPARATUS, AND ENERGY STORAGE APPARATUS

Resumen de: US2025347746A1

An estimation method includes using an energy storage device model simulating a behavior of an energy storage device to estimate an estimated voltage value of the energy storage device when energization is performed in an assumed energization pattern, and correcting the estimated voltage value estimated by a correction value obtained based on an error in an estimated state value of the energy storage device.

Material Testing Apparatus for Material Testing of a Specimen

Resumen de: US2025347604A1

An apparatus for material testing of a specimen, in particular a battery device. The apparatus includes a specimen holder arrangement with a specimen holder for holding a specimen to be tested, a rod arrangement for moving in direction to the specimen holder for transmitting a mechanical load to the specimen, and an electromechanical actuator for moving at least one of the rod arrangement and the specimen holder arrangement with respect to each other along a longitudinal impact direction. The electromechanical actuator arrangement is configured to adjust the speed to any speed between 0 m/s to 12 m/s between the rod arrangement and the specimen holder arrangement other for transmitting a mechanical load to the specimen.

TEST METHOD AND TEST APPARATUS FOR CHIP, UPPER COMPUTER, CHIP, AND DEVICE

Resumen de: US2025347739A1

A test method and test apparatus for a chip, an upper computer, a chip, and a device. The method includes: obtaining a test circuit which is built according to a hot-plugging test bench requirement, where the test circuit includes at least one battery module and at least one chip; connecting the at least one chip to the at least one battery module; and testing performance of the at least one chip.

METHOD OF FORMING POSITIVE ELECTRODE ACTIVE MATERIAL, KILN, AND HEATING FURNACE

Resumen de: US2025347466A1

To provide a method of forming a positive electrode active material with high productivity. To provide a manufacturing apparatus capable of forming a positive electrode active material with high productivity. Provided is a method of forming a positive electrode active material including lithium, a transition metal, oxygen, and fluorine. An adhesion preventing step is performed during heating of an object. Examples of the adhesion preventing step include stirring by rotating a furnace during the heating, stirring by vibrating a container containing an object during the heating, and crushing performed between the plurality of heating steps. By these manufacturing methods, a positive electrode active material having favorable distribution of an additive at the surface portion can be formed.

DETECTION AND MITIGATION OF COOLANT LEAKS IN MULTIPLE BRANCH COOLANT SYSTEM VIA TEMPERATURE INDICATORS

Resumen de: US2025347452A1

A coolant leak detection and mitigation system for a rechargeable energy storage system having multiple battery cells arranged in individual battery modules includes a cooling system having a main coolant loop and multiple parallel coolant branches. Each coolant branch adjusts the temperature of one battery module using a portion of coolant from the main coolant loop. The cooling system also has flow-valve(s) for regulating and distributing the coolant from the main coolant loop across the coolant branches. An electronic controller is configured to command a change in coolant temperature in the main coolant loop. The controller is also configured to monitor temperature change in each battery module in response to the main coolant loop temperature change. The controller is additionally configured to identify a battery module exhibiting a temperature change indicative of a coolant leak and shut off coolant flow into the coolant branch of the affected battery module.

POSITIVE ELECTRODE ACTIVE MATERIAL, MANUFACTURING METHOD THEREOF, AND SECONDARY BATTERY

Resumen de: US2025349834A1

One embodiment of the present invention provides a novel positive electrode active material, or a highly safe secondary battery. The positive electrode active material is manufactured in such a manner that after a nickel compound (also referred to as a precursor) containing nickel, cobalt, and manganese is obtained by a coprecipitation method, a mixture obtained by mixing a lithium compound and the nickel compound is heated at a first heating temperature, the heated mixture is crushed or ground and then heated at a second heating temperature which is higher than the first temperature, and magnesium is mixed and a third heat treatment is performed.

BATTERY AND ELECTRICAL APPARATUS

Resumen de: US2025349845A1

The present application provides a battery and an electrical apparatus. The battery comprises a case, an electrode assembly and an electrolyte solution. The case is provided with an accommodating cavity inside, and the electrode assembly and the electrolyte solution are both arranged within the accommodating cavity. The electrode assembly comprises a positive electrode plate comprising a positive electrode current collector and a positive electrode active layer located on at least one surface of the positive electrode current collector. The positive electrode active layer comprises a positive electrode active material having a chemical formula of Lix(NiaCObMnc)1−dMdO2−yAy; the KEL of the battery satisfies 1.6 g/Ah≤KEL≤1.9 g/Ah, KEL represents the ratio of the mass of free electrolyte solution to the rated capacity of the battery, in units of g/Ah; and the space utilization rate η of the battery is ≥0.8.

POSITIVE ELECTRODES AND RECHARGEABLE LITHIUM BATTERIES

Resumen de: US2025349836A1

A positive electrode and a rechargeable lithium battery including the positive electrode are disclosed. The positive electrode may include a positive electrode current collector, a first positive electrode active material layer provided on the positive electrode current collector and including a first positive electrode active material, and a second positive electrode active material layer provided on the first positive electrode active material layer and including a second positive electrode active material, wherein the first positive electrode active material may include a lithium iron phosphate-based compound, the second positive electrode active material may include a lithium cobalt-based oxide, and a weight ratio of the second positive electrode active material to the first positive electrode active material may be about 40 to about 55.

LITHIUM-ION POUCH CELL WITH A WIDE TEMPERATURE RANGE AND HIGH SAFETY AND PREPARATION METHOD THEREOF

Resumen de: US2025349831A1

The pouch cell includes a positive electrode, a negative electrode, and a diaphragm placed between the positive electrode and the negative electrode. The positive electrode material includes a ternary material coated with lithium manganese iron phosphate; the negative electrode material includes a silicon carbon-mesophase carbon microsphere composite material; the diaphragm is a polyimide nanofiber diaphragm. The present disclosure uses silicon carbon-mesophase carbon microsphere composite material as the negative electrode, lithium manganese iron phosphate coated ternary positive electrode as the positive electrode material, and polyimide nanofiber separator. The safety is obviously improved during piercing. Meanwhile, it may take into account the electrical performance, improve the capacity, charge and discharge rate, long cycle performance and wide temperature range performance of lithium-ion cells; it also improves the service life and cycle life; it has low calorific value, good safety, high stability, and is not prone to dangerous situations such as combustion or explosion.

TETRAFLUOROETHYLENE-BASED POLYMER COMPOSITION, SOLID-STATE SECONDARY BATTERY BINDER, ELECTROLYTE LAYER MIXTURE, ELECTRODE MIXTURE, ELECTRODE, AND SOLID-STATE SECONDARY BATTERY

Resumen de: US2025349886A1

The disclosure provides a TFE-based polymer composition for a solid-state secondary battery binder capable of improving the mixture sheet strength. Provided is a TFE-based polymer composition for use in a solid-state secondary battery binder, containing: a TFE-based polymer; and at least one compound selected from the group consisting of a compound represented by the formula (1) and a compound represented by the formula (2):wherein m is 4 to 20; M1 is H, a metal atom, NR54 (where R5s are optionally the same as or different from each other and each represent H or a C1-C10 organic group), or the like; and p is 1 or 2, andwherein n is 4 to 20; M2 is H, a metal atom, NR54 (where R5 is as defined above), or the like; and q is 1 or 2.

DEVICE FOR INSPECTING BATTERY CELL POUCH AND OPERATING METHOD USING THE SAME

Resumen de: US2025349916A1

A battery cell pouch inspection device of the present disclosure includes: an inspection portion measuring insulation resistance of a battery cell pouch using a probe; a thermal detection portion photographing one surface of the battery cell pouch to generate a thermographic image according to temperature distribution; and a control portion analyzing an insulation resistance signal measured by the inspection portion and the thermographic image to determine whether the battery cell pouch is defective.

SECONDARY BATTERY AND ELECTRONIC DEVICE CONTAINING SAME

Resumen de: US2025349902A1

A secondary battery includes a positive electrode, a negative electrode, a separator, and an electrolyte solution. A negative electrode active material of the negative electrode includes a silicon-carbon material. The electrolyte solution includes ethyl propionate and propyl propionate. Based on a total mass of the electrolyte solution, a mass percentage of the ethyl propionate is a %, and a mass percentage of the propyl propionate is b %, and 1.7≤a/b≤5.7. The electrolyte solution further includes at least one of vinylene carbonate, a boron-containing lithium salt, or a compound containing a structural formula represented by Formula I:where, A in Formula I is selected from C2 to C5 alkylenes.

GEL POLYMER ELECTROLYTE BASED ON POLY(4-HYDROXYBUTYL ACRYLATE) OR POLY(4-HYDROXYBUTYL METHACRYLATE) AND METHOD FOR PREPARING THE SAME

Resumen de: US2025349889A1

A gel polymer electrolyte provided, including: a polymer formed by polymerizing a monomer of 4-hydroxybutyl acrylate (HBA) represented by the following Chemical Formula 1 or a monomer of 4-hydroxybutyl methacrylate (HBMA) represented by the following Chemical Formula 2; and a crosslinking agent, and a method for preparing the same.

NON-AQUEOUS ELECTROLYTE FOR LITHIUM SECONDARY BATTERY

Resumen de: US2025349901A1

Disclosed is a non-aqueous electrolyte including a lithium salt and an organic solvent. The organic solvent includes a cyclic carbonate and a compound represented by Chemical Formula 1:R1 is a fluorine atom, an alkyl group having 1 to 10 carbon atoms substituted with one or more fluorines, or an alkoxy group having 1 to 10 carbon atoms substituted with one or more fluorines; and R2 and R3 are independently hydrogen, alkyl groups with 1 to 10 carbon atoms, or aryl groups with 6 to 20 carbon atoms.

ELECTRODE SHEET EMBOSSING DEVICE

Resumen de: WO2025232619A1

An electrode sheet embossing device, comprising a support (110), a front rolling mechanism (120), a rear rolling mechanism (130), a first connecting rod (140), a second connecting rod (142), and an adjustment mechanism (150). When electrode sheets with different widths are required to be embossed, adjustment can be performed by means of the adjustment mechanism (150), such that a distance between a first front embossing roller (121) and a second front embossing roller (122) and a distance between a first rear embossing roller (131) and a second rear embossing roller (132) are matched with the width of each electrode sheet, thereby embossing the electrode sheets with different widths. Moreover, the first front embossing roller (121) and the first rear embossing roller (131) can remain synchronized and maintain the relative position fixed under the action of the first connecting rod (140), and the second front embossing roller (122) and the second rear embossing roller (132) can also remain synchronized and maintain the relative position fixed under the action of the second connecting rod (142). In this way, the adjustment mechanism (150) can adjust the front rolling mechanism (120) and the rear rolling mechanism (130) at the same time, so that the number of operations can be reduced, and the operation difficulty can also be reduced.

BATTERY CELL AND BATTERY PACK

Resumen de: WO2025232905A1

The present application relates to the technical field of batteries, and discloses a battery cell and a battery pack. The battery cell comprises: a casing provided with an opening; a cover plate arranged corresponding to the opening and connected to the casing to define an accommodating space; and an electrode assembly arranged in the accommodating space, wherein the electrode assembly comprises tabs, ultrasonic welding marks are provided on the tabs to connect the tabs arranged in layers, the tabs and the cover plate are laser-welded to form laser welding marks on the tabs, and the laser welding marks are located within the ultrasonic welding marks; distances from edges of each laser welding mark to corresponding edges of the corresponding ultrasonic welding mark are respectively a, b, c, and d, which satisfy a≥0.5 mm, b≥0.5 mm, c≥0.5 mm, and d≥0.5 mm. In the present application, the tabs of all electrode sheets are connected into an integral whole by means of ultrasonic welding, and the tabs are then connected to the cover plate by means of laser welding, so that components such as a connecting piece, a pole, and a lower plastic component are not required, thereby increasing the internal space utilization rate of batteries, improving the volumetric and gravimetric energy density of batteries, and preventing weld spatter.

RECHARGEABLE PORTABLE BATTERY CONTROL METHOD

Resumen de: WO2025232909A1

Disclosed in the present invention is a rechargeable portable battery control method, comprising a charging control method and a discharging control method. The charging control method comprises normal-temperature charging control; charging high-temperature protection; and charging low-temperature control. The discharging control method comprises: discharging high-temperature protection: during discharging, when a control circuit detects that a battery temperature has reached or exceeded a set high-temperature protection point, stopping discharging until the control circuit detects that the temperature has reached a set safety value, and then restarting discharging; discharging cut-off: during discharging, when the control circuit detects that an internal lithium ion cell voltage has reached a set discharging cut-off voltage of a lithium ion battery, the control circuit stopping output; and discharging recovery: when the control circuit detects that the internal lithium ion cell voltage has reached the set discharging recovery voltage, the control circuit recovering output. In the present invention, by using a segmented variable parameter control method, high flexibility is achieved, and output voltage drop slope can be adjusted on the basis of different applications, thereby better adapting to application requirements.

MULTI-HIERARCHICAL COMPOSITE MATERIAL PREPARED AT ULTRA-HIGH TEMPERATURE, AND PREPARATION METHOD THEREFOR AND USE THEREOF

Resumen de: US2025346987A1

A multi-hierarchical composite material comprises: a carbon matrix and a nano-silicon-based composite material, wherein the nano-silicon-based composite material is prepared by means of a thermal plasma process, which specifically comprises: bombarding and ionizing a micron-scale silicon powder and one or more substances containing a doping element in a high-frequency plasma processing device to form a plasma gas having a temperature of 5000 K or more, and then cooling same and depositing same into a core, thereby obtaining a nanoscale silicon-based composite material with doping elements uniformly embedded and distributed at an atomic scale; the doping element comprises at least one of C, N, B, P, S, Mg, Ca, Al, Zn, Mn, Ni or Ti; the carbon matrix is a porous carbon material; and the nano-silicon-based composite material is deposited in the porous structure of the carbon matrix.

DETECTION AND MITIGATION OF COOLANT LEAKS IN MULTIPLE BRANCH COOLANT SYSTEM

Resumen de: US2025347453A1

A coolant leak detection and mitigation system for a rechargeable energy storage system having multiple battery cells arranged in individual battery modules includes a cooling system having a main coolant loop and multiple parallel coolant branches. Each coolant branch adjusts the temperature of one battery module using a portion of coolant from the main coolant loop. The cooling system also has flow-valve(s) for regulating and distributing the coolant from the main coolant loop across the coolant branches. An electronic controller is configured to monitor the cooling system for coolant loss and, in response to an indication of coolant loss, assess each coolant branch for a coolant leak. The controller is also configured to identify a coolant branch having a coolant leak and shut off, via the flow-valve(s), coolant flow into the coolant branch having the coolant leak.

Modified Polypropylene and a Preparation Method Therefor, a Separator and a Preparation Method Therefor, and a Lithium-Sulfur Battery

Resumen de: US2025346699A1

Disclosed is a preparation method for modified polypropylene, comprising the following steps: dissolving polypropylene in a solvent; and adding a Lewis acid and an initiator into the solution in which the polypropylene is dissolved, and then performing a grafting reaction, to obtain the modified polypropylene; wherein the Lewis acid is selected from at least one of boron trifluoride diethyl etherate, boron trifluoride methyl ether, boron trifluoride acetic acid and boron trifluoride propionic acid; and the initiator is an organic peroxide initiator. Further disclosed are modified polypropylene prepared by the described method, a separator and a preparation method therefor, and a lithium-sulfur battery. Lewis acid monomers are grafted onto molecules of the modified polypropylene provided in the present disclosure, and therefore the modified polypropylene is suitable for being prepared into a separator of a lithium-sulfur battery, and can improve the electrochemical performance of the lithium-sulfur battery.

IRON-NICKEL ALLOY FOIL, METHOD FOR MANUFACTURING IRON-NICKEL ALLOY FOIL, AND COMPONENT

Resumen de: US2025346979A1

The present invention has as its technical problem the suppression of edge waves, center waves, warping, and other deformation in ultrathick (thickness 50 μm or less) Fe—Ni alloy foil and has as its object to obtain Fe—Ni alloy foil suppressed in such deformation. The Fe—Ni alloy foil according to the present invention has a positron annihilation lifetime (PAL) of 0.150 ns or more. The amount of deformation (comprehensive evaluation of edge waves, center waves, warping, and other deformation) can be made smaller than a conventional product. To obtain a microstructure mainly comprised of vacancies for making the PAL 0.150 ns or more, HIP-processing is used for producing an alloy ingot (slab). The alloy ingot can be rolled and heat treated in accordance with conventional method to obtain an Fe—Ni alloy foil.

ELECTRODE ASSEMBLY AND RECHARGEABLE BATTERY WITH THE SAME

Nº publicación: US2025349833A1 13/11/2025

Solicitante:

SAMSUNG SDI CO LTD [KR]
SAMSUNG SDI CO., LTD

Resumen de: US2025349833A1

An electrode assembly of a rechargeable battery includes a separator, and a positive electrode and a negative electrode with the separator interposed therebetween, the positive electrode and the negative electrode being wound together with the separator. The negative electrode may include a negative substrate, a first active material layer disposed on one surface of the negative substrate, and a second active material layer disposed on the other surface of the negative substrate. The first active material layer may include a carbon-based active material, a silicon-based active material, and a carbon nanotube. The second active material layer may include the carbon-based active material.