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SYSTEMS AND METHODS FOR REMOVAL AND RECYCLING OF ALUMINUM IMPURITIES FROM BATTERY WASTE

Resumen de: US20260066372A1

Embodiments described herein relate to removal of aluminum impurities from battery waste. In some aspects, a method for removing aluminum impurities includes preprocessing a quantity of battery waste to improve removal of aluminum impurities from the quantity of battery waste. The method further includes removing at least a portion of the aluminum impurities from the quantity of battery waste, modifying the removed aluminum impurities to form a coating precursor and/or a doping precursor, and applying the coating precursor and/or the doping precursor to an electrode material. In some embodiments, the method further includes characterizing the aluminum impurities in the quantity of battery waste and regenerating the electrode material. In some embodiments, the removing can be via sieving, cyclone separation, air separation, elutriation, and/or dissolution. In some embodiments, the doping precursor can include aluminum hydroxide (Al(OH)3). In some embodiments, the regenerating includes applying a heat treatment to the electrode material.

BATTERY MODULE

Resumen de: US20260066388A1

A battery module includes: a plurality of battery cells arranged in parallel in a first direction; a housing accommodating the plurality of battery cells; and a fire-extinguishing pipe in the housing and extending in the first direction. The fire-extinguishing pipe includes a plurality of metal knitting yarns between an inner surface and an outer surface of the fire-extinguishing pipe, and the plurality of metal knitting yarns extend in the first direction and are spaced apart from one another in a circumferential direction of the fire-extinguishing pipe.

COOLING SYSTEM FOR BATTERY MODULE

Resumen de: US20260066389A1

A battery module cooling system including an inlet into which cooling fluid is introduced, a first parallel system configured by connecting n battery modules in parallel to which the cooling fluid introduced from the inlet is supplied, a second parallel system configured by connecting m battery modules in parallel, with m being a number less than n, to which the cooling fluid flowing out from the first parallel system is supplied, a third parallel system configured by connecting s battery modules in parallel, with s being a number less than m, to which the cooling fluid flowing out from the second parallel system is supplied, and an outlet through which the cooling fluid that has passed through the third parallel system flows out.

SYSTEM FOR DETECTING COOLANT LEAKS IN ELECTRIC VEHICLE BATTERY PACK

Resumen de: US20260066377A1

A vehicle including a battery pack having a plurality of battery cells and a battery pack thermal management system configured to exchange heat with the plurality of battery cells. The battery pack thermal management system includes a plurality of cold-plates through which a coolant circulates therethrough for each of the plurality of battery cells, at least one pump for circulating the coolant through the plurality of cold-plates, and controller in communication with the pump. The battery pack includes at least one sensor is configured to generate and communicate to the controller a signal indicative of a change in resistance or capacitance when exposed to moisture, wherein upon receipt of the signal indicative of the change in resistance or capacitance from the at least one sensor, the controller is configured to cease operation of the at least one pump to cease circulation of the coolant through the plurality of cold-plates.

LEAD-ACID BATTERY

Resumen de: WO2026048183A1

A lead-acid battery 1 comprises: a battery case 20; an electricity storage element 30 and an electrolyte 35 which are housed in the battery case 20; a lid member 50 for sealing the upper surface of the battery case 20; and a vent plug 70 attached to the lid member 50. A plug body 71 of the vent plug 70 includes: a head portion 73 having an exhaust hole 73B; and a cylindrical portion 75 which protrudes downward from the head portion 73 and has an opening 76 at a tip. When the lead-acid battery 1 is in the upright or inverted position, the opening 76 at the cylinder tip of the cylindrical portion 75 of the vent plug 70 is positioned above a liquid surface of the electrolyte 35, and the opening 76 at the cylinder tip is closed by a wall.

POWER STORAGE DEVICE

Resumen de: WO2026048066A1

A power storage device 1 comprises: a first electrode 10 that functions as a p-type semiconductor; a second electrode 20 that functions as an n-type semiconductor; and an oxygen vacancy region 30 that is disposed between the first electrode 10 and the second electrode 20. The first electrode 10 preferably contains manganese oxide. In addition, the second electrode 20 preferably contains tin oxide. The oxygen vacancy region 30 also preferably contains zirconium oxide stabilized by yttrium oxide, cerium oxide, calcium oxide, magnesium oxide, or scandium oxide.

ELECTRIC VEHICLE CONTROL METHOD AND ELECTRIC VEHICLE CONTROL DEVICE

Resumen de: WO2026047948A1

This electric vehicle control method is for warming an on-board device by using heat generated by a first electric unit and a second electric unit, in an electric vehicle that includes: the first electric unit and the second electric unit which are for generating torque for travelling; and a battery for supplying power to the first electric unit and the second electric unit. In this control method, when warm-up of the on-board device is required while the electric vehicle is traveling, the first electric unit and the second electric unit are boosted, or the d-axis currents of the first electric unit and the second electric unit are increased, to intensify the heat generated by the entirety of the first electric unit and the second electric unit. Additionally, according to the states of the first electric unit and the second electric unit, the d-axis current of one of the first electric unit and the second electric unit is increased more significantly than the d-axis current of the other so as to preferentially cause one of the first electric unit and the second electric unit to generate heat.

POSITIVE ELECTRODE FOR CLOSED-TYPE LITHIUM-OXYGEN BATTERY, AND CLOSED-TYPE LITHIUM-OXYGEN BATTERY USING SAME

Resumen de: WO2026047884A1

The present disclosure provides means with which it is possible to improve the discharge capacity of a closed-type lithium-oxygen battery. Disclosed is a positive electrode for a closed-type lithium-oxygen battery that has a positive electrode active material layer containing lithium oxide, a catalyst, a binder, and a carbon conductivity aid, the carbon conductivity aid having a BET specific surface area of 40-1000 m2/g.

VOLTAGE DETECTION DEVICE FOR BATTERY MODULE

Resumen de: WO2026047838A1

In order to suppress disconnection of conducting wires (12), the present invention comprise a plurality of the conducting wires (12) each having one end connected to a to-be-detected part of a battery cell (21) and another end connected to an input unit of a controller (25), and an outer shell (11) covering the plurality of conducting wires, wherein: the outer shell has a repeating shape in which the cross-sectional shape perpendicular to an extension direction is constant and a plurality of iterative units are repeated, and one end of the outer shell is fixed to one pressurizing part (23a) and another end is directly or indirectly fixed to another pressurizing part (23b); and the respective one ends of the plurality of conducting wires are guided to the outside of the outer shell from iterative units, from among the plurality of iterative units, that are different from one another, and are connected to to-be-detected parts, from among the abovementioned to-be-detected parts, that are different from one another.

CYLINDRICAL SECONDARY BATTERY AND ELECTRICAL DEVICE

Resumen de: WO2026044681A1

A cylindrical secondary battery (100) and an electrical device (1000). The cylindrical secondary battery (100) comprises a pressure relief member (32) and a sealing member (40), the pressure relief member (32) being a conductive member. The pressure relief member (32) comprises a disc body portion (321) and a first protruding portion (322), the first protruding portion (322) being embedded in the sealing member (40) so as to limit the displacement of the sealing member (40), and the disc body portion (321) comprising a weak region (3211). The first protruding portion (322) is connected to one side of the disc body portion (321) in the central axis direction (X) of the disc body portion; an outer side wall (3221) of the first protruding portion (322) comprises a first wall (322a) and a second wall (322b) connected to each other, the first wall (322a) being connected to the disc body portion (321), and the second wall (322b) having a first end (32b1) close to the axis of the disc body portion (321) and a second end (32b2) facing away from the axis of the disc body portion (321). In the central axis direction (X) of the disc body portion, the distance between the first end (32b1) and the disc body portion (321) is greater than the distance between the second end (32b2) and the disc body portion (321), and the second wall (322b) is beneficial to improving the sealing effect of the cylindrical secondary battery (100).

ELECTROLYTE FOR SECONDARY BATTERY, SECONDARY BATTERY, AND ELECTRONIC DEVICE

Resumen de: WO2026044654A1

The present application provides an electrolyte for a secondary battery, a secondary battery, and an electronic device. The electrolyte comprises a first component and a second component; the first component comprises a compound represented by formula I, and the second component comprises a compound represented by formula II. By applying the electrolyte comprising both the first component and the second component to the secondary battery, the cycle performance of the secondary battery is improved, thereby enabling the electronic device to have elongated service life.

POSITIVE ELECTRODE ACTIVE MATERIAL AND PREPARATION METHOD THEREFOR AND USE THEREOF

Resumen de: WO2026044552A1

A positive electrode active material and a preparation method therefor and the use thereof. The positive electrode active material comprises a ternary material, which comprises a compound having a chemical formula of Lia(NixCoyMz)O2, wherein 0.9≤a≤1.1, 0.5≤x＜1, 0＜y≤0.5, 0＜z≤0.5, x+y+z=1, and M comprises Mn, Al, etc. The ternary material satisfies: (1) φ=V1/(V1+V2), and 0.01≤φ≤0.1; and (2) 100≤h003≤250, wherein φ represents the pore volume filling factor of the ternary material, V1 represents the total pore volume of nitrogen adsorption in the ternary material, in cm3/g, V2 represents the total skeletal volume of the ternary material, in cm3/g, and h003 represents the number of stacked layers of the (003) crystal plane of the ternary material in the X-ray diffraction pattern, in layers.

LITHIUM-ION BATTERY AND PREPARATION METHOD THEREFOR, POSITIVE ELECTRODE SHEET AND ELECTRIC DEVICE

Resumen de: WO2026045078A1

Provided in the present application are a lithium-ion battery and a preparation method therefor, a positive electrode sheet and an electric device. The lithium-ion battery comprises a positive electrode sheet; the positive electrode sheet comprises a positive electrode active layer; and the components of the positive electrode active layer comprise a positive electrode active material, a dispersing agent and a softening agent. The dispersing agent comprises a hydrogenated butadiene-acrylonitrile rubber, and the softening agent comprises a compound containing a linear chain segment. The positive electrode sheet in the lithium-ion battery has relatively good flexibility and does not easily crack, and the resistance of a film of the battery is also low.

SOLID ELECTROLYTE, METHOD OF PREPARING THE SAME, AND ALL-SOLID-STATE BATTERY INCLUDING THE SOLID ELECTROLYTE

Resumen de: US20260066341A1

The present invention relates to a sulfide-based solid electrolyte having excellent moisture stability and ionic conductivity, a method of preparing the same, and an all-solid-state battery including the sulfide-based solid electrolyte, wherein the present invention provides a solid electrolyte which includes a core portion including sulfide-based solid electrolyte particles; and a surface portion which is formed on the core portion and includes fluorine-doped sulfide-based solid electrolyte particles, wherein the surface portion includes a concentration gradient region in which a concentration of a fluorine (F) atom is decreased from a surface of the surface portion toward the core portion, a method of preparing the same, and an all-solid-state battery including the solid electrolyte.

UNIVERSAL BATTERY PACK

Resumen de: US20260066703A1

The one or more specified settings associated with the one or more battery cells in the battery pack to facilitate power transfer between the one or more battery cells in the battery pack for a battery pack is configured. The one or more settings associated with the one or more battery cells in the battery pack are accessed. The configuration for the battery pack, until the configuration meets or exceeds the battery power requirements is optimized.

Electrode Assembly and Battery Cell Including the Same

Resumen de: US20260066330A1

An electrode assembly includes a first electrode, a second electrode, and a separator located between the first electrode and the second electrode. The first electrode, the second electrode, and the separator are wound in a roll shape. The first electrode includes a first coated portion in which a first active material is coated on a first current collector, and a first uncoated portion adjacent to the first coated portion and formed at one side of the first current collector. The first uncoated portion includes a plurality of cut portions each open to an outside and a plurality of flags partitioned by the plurality of cut portions. A length of each of the plurality of cut portions increases in at least one or more sections in a radial direction from a winding center.

SYSTEM AND METHOD FOR MANUFACTURING SECONDARY BATTERY

Resumen de: US20260066329A1

A system for manufacturing a secondary battery includes a reform pin insertable into a central hole of an electrode assembly, the electrode assembly including a wound stack of a first electrode, a separator, and a second electrode, a driver configured to move the reform pin and to insert the reform pin into the central hole, after the electrode assembly is embedded in a case, and a rotator configured to rotate the reform pin.

ELECTROLYTE COMPOSITION, AND BATTERY AND DEVICE INCLUDING THE SAME

Resumen de: US20260066351A1

An electrolyte composition for batteries is provided. The electrolyte composition includes a solvent including one or more fluorinated carbonates. The electrolyte composition further includes a lithium-based salt and a lithium (oxalato)borate salt. Additionally, a battery including the electrolyte composition is provided. The battery includes an anode, a nickel-based cathode, and the electrolyte composition disposed between the anode and the nickel-based cathode.

ELECTRIC VEHICLE THERMAL MANAGEMENT SYSTEM WITH THERMAL CONTROL POUCHES

Resumen de: US20260066374A1

One aspect provides a battery cooling pouch including a first thin film sheet defined as a first cooling fin having a first major surface to contact a battery cell, a second thin film sheet defined as a second cooling fin having a first major surface, and a panel insert of a polymeric material, wherein perimeter edges of the first and second thin film sheets are sealed to confine the panel insert between the first and second thin film sheets, the panel insert having a major surface defining coolant flow grooves exposed to the first thin film sheet to form coolant flow channels. The cooling pouch includes at least one interior seal between at least a portion of the first thin film sheet and the major surface of the panel insert to direct a coolant fluid through the coolant flow channels.

ENERGY STORAGE SYSTEM

Resumen de: US20260066373A1

An energy storage system includes a module unit comprising the plurality of battery modules. The plurality of battery modules each accommodates a plurality of cell units. Each of the plurality of cell units comprise a plurality of battery cells arranged in a first direction and are arranged in a second direction, perpendicular to the first direction. A pipe portion is connected to a fire extinguishing tank storing a fire extinguishing agent and extends into the module unit. The pipe portion includes a main pipe extending from the fire extinguishing tank and a sub-pipe branched from the main pipe. One end of the sub-pipe is connected to a first branch point of the main pipe, and another end of the sub-pipe is connected to a second branch point of the main pipe. The sub-pipe extends to pass through all the plurality of battery modules.

CATHODE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME

Resumen de: US20260066278A1

A cathode for a lithium secondary battery according to embodiments of the present disclosure includes a cathode current collector, a first cathode active material layer disposed on at least one surface of the cathode current collector and including lithium metal phosphate particles, and a second cathode active material layer disposed on the first cathode active material layer and including lithium-transition metal oxide particles, wherein the content of the lithium-transition metal oxide particles, based on the total weight of the lithium metal phosphate particles and the lithium-transition metal oxide particles, is 20 wt % to 70 wt %.

ELECTRODE ASSEMBLY AND BATTERY CELL COMPRISING THE SAME

Resumen de: US20260066275A1

An electrode assembly includes a first electrode plate including a first substrate and a first composite portion on the first substrate, a second electrode plate including a second substrate, a second composite portion on the second substrate, and a lithium coating layer on the second substrate, and a separator between the first electrode plate and the second electrode plate.

LITHIUM-ION-BATTERY ANODE MATERIALS CONTAINING LITHIUM VANADIUM OXIDE AND SILICON

Resumen de: US20260066273A1

Some variations provide an anode material comprising: silicon monoxide in the form of first particles; and lithium vanadium oxide (LVO) with a composition given by LiaVbOc, wherein a=0.1-10, b=1-3, c=1-9, wherein the LiaVbOc is capable of being reversibly lithiated, wherein the LVO is present in the form of second particles that are physically mixed with the first particles. Other variations provide an anode material comprising: a Si/C composite in the form of first particles; lithium vanadium oxide in the form of second particles, wherein the first particles and the second particles are physically mixed together, wherein the Si/C composite is present in a Si/C concentration from about 1 wt % to about 99 wt %, and wherein the LVO is present in a LVO concentration from about 1 wt % to about 99 wt %. Examples are provided, demonstrating the utility of the disclosed technology.

SYSTEM AND METHOD FOR EXTRACTION OF LITHIUM FROM ACTIVE MATERIALS

Resumen de: WO2026047774A1

The various embodiments of the present invention provide a system and method for extraction of lithium from active materials of lithium iron phosphate battery. The method involves extraction of materials from spent battery and heating a mixture of the battery's black mass with suitable reagents at specific temperature in a predetermined ratio, to initiate a chemical reaction that efficiently produces lithium chloride, which is then extracted through water leaching. This method eliminates the need for harmful acids and solvents, operates at lower temperatures, and directly produces lithium chloride in a form that is both pure and economically valuable. Furthermore, the process is environmentally friendly, reduces operational costs, and enhances lithium recovery rates. By-products such as calcium fluorophosphate and iron oxide are also repurposed, supporting sustainability and reducing waste. This system offers a significant improvement over traditional methods, providing a safer, more sustainable, and cost-effective solution for recycling Lithium ion batteries.

SECONDARY BATTERY AND ELECTROLYTE SOLUTION

Nº publicación: WO2026047500A1 05/03/2026

Solicitante:

SEMICONDUCTOR ENERGY LABORATORY CO LTD [JP]
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Resumen de: WO2026047500A1

Provided is a secondary battery or an electrolyte solution that exhibits excellent battery characteristics below the ice point. According to the present invention, a secondary battery includes an electrolyte solution that includes at least a lithium salt and a mixed solvent that includes a cyclic carbonate and a chain carbonate, the molar ratio (CH/CY) of the chain carbonate (CH) to the cyclic carbonate (CY) being greater than 1.5, and the concentration of the lithium salt per liter of the mixed solvent being 0.25-1 mol.