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Battery Manufacturing Method and System

Resumen de: US2025149533A1

A method of manufacturing a battery, particularly a secondary battery, includes: depositing an active material on a substrate, depositing an insulator material on the substrate such as to extend over a boundary between the active material and the substrate, determining an indicative wet thickness of the insulator material at a position on the substrate that is offset from the boundary by a characteristic measurement distance, and adapting the depositing of the insulator material as a function of the indicative wet thickness. The insulator material includes an insulator component and a liquid component. A battery manufacturing system and a battery are also provided.

BATTERY PACK AND ELECTRIC VEHICLE

Resumen de: US2025149701A1

A battery pack includes a housing having a bottom surface and a top surface and a battery assembly in the housing. The battery assembly includes structural reinforcing members and cell sequences formed by connecting multiple cells. An outer surface of the cell includes a bottom surface, a top surface, first and second lateral surfaces. The bottom surface of the cell faces the bottom surface of the housing, and the top surface of the cell faces the top surface of the housing. The first lateral surface has a largest area. The multiple cells are arranged with second lateral surfaces thereof facing each other to form a cell sequence, and the structural reinforcing members are fixedly bonded with first lateral surfaces of cells in the cell sequence. The battery assembly is supported in the housing by the bottom surface of the housing.

LITHIUM ION BATTERY

Resumen de: US2025149544A1

A lithium ion battery having a high capacity and improved rapid charging performance is provided. A lithium ion battery according to an aspect of the present disclosure is provided with a positive electrode, a negative electrode, and a non-aqueous electrolyte. The negative electrode has a negative electrode core body, a first negative electrode mixture layer formed on the surface of the negative electrode core body, and a second negative electrode mixture layer formed on the surface of the first negative electrode mixture layer. The first negative electrode mixture layer includes a first negative electrode active material that includes graphite. The second negative electrode mixture layer includes a second negative electrode active material that includes at least one selected from the group consisting of metals that bind to lithium, alloys that bind to lithium, and compounds that bind to lithium.

NEGATIVE ELECTRODE PLATE AND ELECTROCHEMICAL DEVICE

Resumen de: US2025149542A1

A negative electrode plate, including a negative current collector and a negative active material layer disposed on at least one side of the negative current collector. The negative active material layer includes a negative active material, including hard carbon particles and graphite particles. The hard carbon particles have a lamellar structure. Based on a quantity of the hard carbon particles, a quantity of the hard carbon particles with an aspect ratio of 3 to 7 accounts for a %, and 30≤a≤70. The face-to-face contact in the lamellar hard carbon active material in the negative electrode plate replaces the point-to-point contact in the hard carbon active material of conventional morphology, thereby effectively reducing the internal resistance of the negative active material layer, and effectively increasing the compacted density of the negative active material layer and reducing the porosity, and in turn, increasing the energy density of the lithium-ion battery.

DENSIFIED BATTERY ELECTRODES AND METHODS THEREOF

Resumen de: US2025149543A1

In an aspect, a Li-ion cell may comprise a densified electrode exhibiting an areal capacity loading of more than about 4 mAh/cm2. For example, the densified electrode may a first electrode part arranged on a current collector and a second electrode part on top of the first electrode part, the second electrode part of the at least one densified electrode having a higher porosity than the first electrode part of the at least one densified electrode. In some designs, the densified electrode may be fabricated by densifying electrode layers via a pressure roller while maintaining a contacting part of the pressure roller at a temperature that is less than a temperature of the second electrode part. In some designs, the applied pressure is a time-varying (e.g., frequency modulated) pressure. In some designs, a drying time for a slurry to produce the densified electrode may range from around 1-120 seconds.

NEGATIVE ELECTRODE FOR A LITHIUM SECONDARY BATTERY AND A LITHIUM SECONDARY BATTERY INCLUDING THE SAME

Resumen de: US2025149563A1

The present disclosure relates to a negative electrode for a lithium secondary battery and a lithium secondary battery including the same. The negative electrode for the lithium secondary battery includes: a first layer including a first lithium metal sheet; a second layer formed on a top surface of the first layer and including a second lithium metal sheet and a negative electrode collector surrounding an outer peripheral surface of the second lithium metal sheet; and a third layer formed on a top surface of the second layer and including a third lithium metal sheet.

LITHIUM ION BATTERY

Resumen de: US2025149636A1

Disclosed is a lithium ion battery in which elution of aluminum from an aluminum-containing current collector to an electrolytic solution is suppressed. The lithium ion battery of the present disclosure comprises a positive electrode, a negative electrode and an electrolytic solution, in which one or both of the positive electrode and the negative electrode comprise an aluminum-containing current collector, the aluminum-containing current collector is in contact with the electrolytic solution, the electrolytic solution contains a cyclic carbonate and a lithium amide salt dissolved in the cyclic carbonate, the lithium amide salt contains a chain lithium amide salt and a cyclic lithium amide salt, a molar ratio of the chain lithium amide salt to the cyclic carbonate is greater than 0.25 and 0.33 or less, and a molar ratio of the cyclic lithium amide salt to the cyclic carbonate is greater than 0 and 0.07 or less.

ANODE MATERIAL, PREPARATION METHOD THEREFOR, AND LITHIUM-ION BATTERY

Resumen de: US2025149565A1

Anode material, preparation method therefor, and lithium-ion battery are provided. The anode material includes a porous carbon substrate and silicon, the silicon being dispersed in the pores and/or surface of the porous carbon substrate. The preparation method for the anode material includes: mixing and treating a porous carbon powder and a binder to obtain a porous carbon substrate; and compounding silicon nanoparticles on the porous carbon substrate to obtain the anode material. Adjusting and selecting process parameters allows for reducing the porosity between porous carbon, and further forming a high-density anode material.

NONAQUEOUS ELECTROLYTE SECONDARY BATTERY POSITIVE ELECTRODE AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Resumen de: US2025149590A1

This nonaqueous electrolyte secondary battery positive electrode is characterized by comprising a positive electrode current collector and a positive electrode mixture layer formed on at least one surface of the positive electrode current collector, and is characterized in that: the mass per unit area of the positive electrode mixture layer on the one surface side is 300 g/m2 or more; the positive electrode mixture layer has a positive electrode active material and a binder including a fluorine-containing polymer having a weight average molecular weight of 1,000,000 or more; and the positive electrode current collector has a contact angle with respect to N-methyl-2-pyrrolidone of 15-35°, inclusive.

BATTERY MANAGEMENT APPARATUS

Resumen de: US2025149907A1

Disclosed is a battery management apparatus capable of effectively reducing the current consumption of a component for waking up a microcontroller unit. The battery management apparatus includes a wake-up unit, a first power supply path, a first regulator, a first switching element, a feedback module, and a microcontroller unit configured to convert a sleep mode to a wake-up mode by receiving a wake-up signal from the wake-up unit and connected to the feedback module to turn off the first switching element.

Positive Electrode Active Material, Method for Preparing the Same, and Positive Electrode and Lithium Secondary Battery Including the Same

Resumen de: US2025149572A1

A positive electrode active material includes a lithium composite transition metal oxide in the form of a single particle. The lithium composite transition metal oxide includes Al, Y, and Zr. The method for preparing the positive electrode active material is also provided. Additionally, a positive electrode and a lithium secondary battery including the same are also provided.

CONNECTION MODULE SET, ELECTRODE CONNECTION MEMBER SET, AND BATTERY PACK

Resumen de: US2025149748A1

A connection module set according to an embodiment includes a first connection module and a second connection module. The first connection module includes a first electrode connection member. The first electrode connection member includes a basal end electrically connected to a first electrode terminal of the first battery module, and a protruding end protruding in a first direction. The second connection module includes a second electrode connection member. The second electrode connection member includes a basal end electrically connected to a second electrode terminal of the second battery module, and a holder into which the protruding end of the first electrode connection member of the first connection module is inserted from the first direction and held.

BATTERY MODULE AND METHOD OF MANUFACTURING THE SAME

Resumen de: US2025149750A1

A battery module is disclosed. The battery module may comprise a plurality of battery cells stacked in a first direction, wherein each of the plurality of battery cells includes a cell body and an electrode lead protruding from the cell body; a busbar including a busbar body in which a plurality of busbar slits are formed, the electrode leads of the plurality of battery cells passing through the plurality of busbar slits, wherein the electrodes of the plurality of battery cells are respectively inserted into the plurality of busbar slits and are bent in the first direction to overlap with each other; and a first weld bead formed by melting and joining a portion of the busbar body and a portion of the electrode lead, the first weld bead extending in the first direction.

ASSEMBLED-BATTERY STRUCTURE AND COMPOSITE ASSEMBLED-BATTERY STRUCTURE

Resumen de: US2025149744A1

An assembled-battery structure includes: a plurality of batteries; and a connection member connected to the plurality of batteries, in which: each battery includes a first terminal disposed on one surface in a thickness direction, a second terminal disposed on the other surface, and a plurality of connection terminals disposed on an identical surface to the surface on which the first terminal is disposed; the connection member includes a first-terminal connection portion, a second-terminal connection portion, and a connection-terminal connection portion; the first-terminal connection portion includes a first metal layer electrically connected to the first terminals of the batteries; the second-terminal connection portion includes a second metal layer electrically connected to the second terminals of the batteries; the connection-terminal connection portion includes a plurality of terminals electrically connected to the connection terminals of the batteries; and the first-terminal connection portion and the connection-terminal connection portion are disposed on an identical surface.

ELECTRICAL ENERGY STORAGE SYSTEM WITH INTEGRATED FAULT WARNING SYSTEM

Resumen de: US2025149878A1

An electrical energy storage system has a plurality of electrical energy storage packs each including at least one electrical energy storage cell, the electrical energy storage packs comprising a switch that controls a connection between two ports of the respective electrical energy storage pack. An electrical wire loop forms a closed circuit by connecting the electrical energy storage packs in series at two of their ports. One of the electrical energy storage packs supplies the electrical wire loop with an electric current, and an alarm device electrically is connected to the electrical wire loop to receive the electric current that passes through all electrical energy storage packs of the electrical energy storage system. The alarm device provides an alarm output when the closed circuit is broken.

Fire-Resistant Bus Bar and Battery Pack Including the Same

Resumen de: US2025149751A1

A fire-resistant bus bar includes a bus bar conductor part; a sheath layer of a fire-resistant silicone, and a protective layer. The sheath layer covers portions of the bus bar conductor part excluding both ends and is ceramicized at high temperatures to support the bus bar conductor part. The protective layer covers the sheath layer, in which a metal sheet is included in the sheath layer to reinforce the structural rigidity of the sheath layer. A battery pack and method of manufacture are also provided.

Position Roller for Web Meander Control

Resumen de: US2025145401A1

A position roller for meander control includes, in one example, a roller with a rotational axis; a first ball joint supporting a distal end among both ends of the rotational axis for pivotal movement; an XZ driver that drives a proximal end among both ends of the rotational axis into two-dimensional motion in a plane; and a base supporting the first ball joint and the XZ driver.

POWER STORAGE DEVICE PACKAGING MATERIAL, METHOD FOR PRODUCING SAME, FILM, AND POWER STORAGE DEVICE

Resumen de: US2025145868A1

A power storage device packaging material, including a laminate including at least a base material layer, a barrier layer, and a heat-sealable resin layer in this order, wherein the heat-sealable resin layer includes a film, the film is formed of a resin containing three or more structural units, and the film has a melting peak temperature of 170° C. or more.

COMPOSITION FOR ELECTROCHEMICAL DEVICE AND METHOD OF PRODUCING SAME, BINDER COMPOSITION FOR ELECTROCHEMICAL DEVICE, CONDUCTIVE MATERIAL DISPERSION LIQUID FOR ELECTROCHEMICAL DEVICE, SLURRY FOR ELECTROCHEMICAL DEVICE ELECTRODE, ELECTRODE FOR ELECTROCHEMICAL DEVICE, AND ELECTROCHEMICAL DEVICE

Resumen de: US2025145846A1

A composition for an electrochemical device contains a polymer that includes a nitrile group-containing monomer unit and either or both of a conjugated diene monomer unit and an alkylene structural unit and that has a structure derived from a specific compound on at least one terminal. The composition has a concentration of divalent or higher-valent metal ions of not less than 5 mass ppm and not more than 4,000 mass ppm.

SYNTHESIS OF NANOSIZED CUBIC LITHIUM LANTHANUM ZIRCONATE FAST ION CONDUCTOR

Resumen de: US2025145488A1

Synthesizing lithium lanthanum zirconate includes combining a reagent composition with a salt composition to yield a molten salt reaction medium, wherein the reagent composition comprises a lithium component, a lanthanum component, and zirconium component having a lithium:lanthanum:zirconium molar ratio of about 7:3:2; heating the molten salt reaction medium to yield a reaction product; and washing the reaction product to yield a crystalline powder comprising lithium lanthanum zirconate.

METHOD OF PREPARING LITHIUM SULFIDE

Resumen de: US2025145484A1

In a method for preparing lithium sulfide, a solid sulfur layer and a lithium source layer are sequentially arranged in a reactor. A gas feed is injected into the reactor in a single direction to obtain a lithium sulfide-containing product. The lithium sulfide-containing product is dissolved in an anhydrous solvent to form a lithium sulfide-containing solution. Lithium sulfide is separated from the lithium sulfide-containing solution. The gas feed sequentially passes through the solid sulfur layer and the lithium source layer, such that high-purity lithium sulfide may be efficiently prepared.

PROCESS FOR THE PREPARATION OF PHOSPHORUS PENTAFLUORIDE

Resumen de: US2025145485A1

The present invention relates to processes for the preparation of phosphorus pentafluoride and lithium hexafluorophosphate.

ANODE MATERIAL, PREPARATION METHOD THEREOF, AND BATTERY

Resumen de: US2025149567A1

An anode material, a preparation method thereof, and a battery provided. The anode material includes a secondary particle, the secondary particle includes a plurality of agglomerated primary particles, and a primary particle of the plurality of primary particles includes an active material doped with iron element and nickel element, where the iron element accounts for a mass content of A ppm in the anode material, the nickel element accounts for a mass content of B ppm in the anode material, and 9.2≤A/B≤20. In the anode material provided, hardness of the nano-silicon is strengthened, thereby improving stability of the nano-silicon particles, reducing volume change of the anode material, and improving cycling stability of the battery.

BINDER FOR SECONDARY BATTERY AND METHOD OF PREPARING THE SAME

Resumen de: US2025149585A1

According to embodiments, a binder for a lithium secondary battery comprises a mixture of dextran and gallic acid obtained through physical stirring. As an example, the binder can be prepared by dissolving dextran in a solvent to form a dextran solution, adding gallic acid to the dextran solution, and, after the adding of the gallic acid to the dextran solution, physically mixing the dextran solution including the added gallic acid to form a mixture.

NEGATIVE ELECTRODE MATERIAL, PREPARATION METHOD THEREOF, AND LITHIUM-ION BATTERY

Nº publicación: US2025149580A1 08/05/2025

Solicitante:

BTR NEW MAT GROUP CO LTD [CN]
BTR NEW MATERIAL GROUP CO., LTD

Resumen de: US2025149580A1

A negative electrode material includes carbonaceous particles with pores and at least some of the pores have a slenderness ratio greater than 3, the total number of randomly observed pores is 100, and the number of pores with an aperture of 0.1 μm to 0.5 μm takes a proportion greater than or equal to 60% of the total number of pores, and a maximum aperture of the pores is less than or equal to 3 μm. The negative electrode material has elongated pores, and most of the pores have a relatively small aperture, which indicates that in the present application, the carbonaceous particles have a relatively small pore volume inside, and less large pores are provided, so that the carbonaceous particles have excellent compactness, and the capacity, expansion and cycle performances of the negative electrode material are improved.