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1664
resultados
Última actualización
12/12/2025 [07:43:00]
Resultados 350 a 375 de 1664
Resumen de: US2025372640A1
A method of producing a positive electrode active material includes calcinating a mixture of a nickel-containing compound and a lithium compound introduced into a furnace of a rotary kiln at 750 to 1000° C. under an oxygen atmosphere. The nickel-containing compound is at least one of a nickel-containing hydroxide and a nickel-containing oxide. A layer of yttrium-chromium composite oxide is formed on an outermost surface of an inner wall of the furnace.
Resumen de: US2025372627A1
The cathode active material includes first particles and second particles. The first particle has a maximum Feret diameter of 1 μm or greater. The second particle has a maximum Feret diameter less than or equal to 50 nm. The second particle is attached to the surface of the first particle. The second particles are deposited in an amount of 0.24 or more per 1 μm2.
Resumen de: US2025372620A1
This non-aqueous electrolyte secondary battery comprises a negative electrode. The negative electrode has a negative electrode mixture layer formed on the surface of a negative electrode current collector. The negative electrode mixture layer has a first negative electrode mixture layer and a second negative electrode mixture layer. The first negative electrode mixture layer and the second negative electrode mixture layer include a negative electrode active material. The negative electrode active material in the first negative electrode mixture layer has two negative electrode active materials M1 and M2 of different volume-average particle size. The ratio (A2/A1) of the volume-average particle size (A2) of the negative electrode active material M2 to the volume-average particle size (A1) of the negative electrode active material M1 is in the range of 0.16-0.5.
Resumen de: US2025372731A1
A secondary battery includes an electrode assembly and an electrolyte. The electrode assembly includes a positive electrode plate, a negative electrode plate, and a separator. The separator includes a substrate layer and a first adhesive layer. The substrate layer includes a third surface and a fourth surface opposite to each other. The third surface faces the negative electrode plate. The first adhesive layer is disposed on the third surface and is of a striped structure. A part of the separator extending beyond the negative electrode plate is defined as a separator extension part. The first adhesive layer is at least partially located on the separator extension part. A peel strength between the separator and the first negative electrode material layer is a N/m, and a peel strength between the first negative electrode material layer and the negative electrode current collector is b N/m, where 6.0≤a≤15.0, and a
Resumen de: US2025372724A1
A method for producing accumulators which each have at least one cell stack, wherein to produce the cell stack, individual sheets are stacked via a stacking device in that the individual sheets are fed one after the other via a conveying line of the stacking device to a stacking wheel arrangement of the stacking device. The stacking wheel arrangement has two stacking wheels which are arranged in two planes one above the other. A predefined number of successive individual sheets are fed to one of the two stacking wheels. The predefined number corresponds to the number of individual sheets in a finished cell stack. A plurality of the individual sheets following the predefined number of individual sheets are fed to the other of the two stacking wheels.
Resumen de: US2025372713A1
An electrochemical device includes a negative electrode plate and an electrolyte solution. The negative electrode plate includes a negative electrode material layer. The negative electrode material layer includes a silicon-carbon negative electrode material. The silicon-carbon negative electrode material includes a dopant element. The dopant element includes at least one of elements B, P, or S. The electrolyte solution includes a compound represented by Formula I and fluoroethylene carbonate.
Resumen de: US2025372751A1
This thermal management apparatus for energy storage batteries in cold regions combines a battery enclosure and a diesel-fired circulation heater. The enclosure comprises an enclosure body with dual-layer outer/inner housings separated by a first vacuum insulation layer, and a cover mounted atop the enclosure body containing a second vacuum layer. The inner housing incorporates a water reservoir interlayer connected to two upper-mounted delivery pipes. The cover features water delivery ports fitted with adapters coupling to the pipes, along with a cable routing hole accessing the inner housing. The heater forms a closed hydraulic loop by connecting its inlet and outlet to respective adapters. A temperature sensor installed on the inner housing's interior wall is linked to the heater for operational control. The dual vacuum insulation layers synergize with the circulating water system to maintain optimal battery temperature while minimizing heat dissipation.
Resumen de: US2025372775A1
A secondary battery according to various embodiments of the present disclosure includes a battery can configured to accommodate an electrode assembly through an open end; a cap plate coupled to the open end; and a sealing gasket interposed between the battery can and the cap plate, wherein the cap plate includes a flat part and a raised part protruding from the flat part toward at least one axial direction of the battery can.
Resumen de: US2025372802A1
A secondary battery according to an embodiment of the present disclosure may include: a housing having an accommodation space; and a venting portion disposed in the housing and openable by pressure of the accommodation space, and the venting portion may include: a venting cover having one surface facing the accommodation space; a notch portion formed in the venting cover; and a protrusion portion protruding toward the notch portion.
Resumen de: US2025372696A1
Provided is a lithium secondary battery, wherein the lithium secondary battery includes a first electrode, a second electrode spaced apart from the first electrode, and a solid electrolyte disposed between the first electrode and the second electrode. The solid electrolyte includes a fiber including polytetrafluoroethylene having a number average molecular weight of 500 kg/mol to 20,000 kg/mol, and a plurality of sulfide particles. The fiber is in contact with at least some of the sulfide particles.
Resumen de: US2025372692A1
An embodiment of the present disclosure provides an electrode assembly that includes a first electrode, a separator, and a second electrode and is wound with the first electrode, the separator, and the second electrode stacked, including: each of the first electrode and the second electrode includes a substrate; and an active material layer disposed on at least a portion of the substrate, and a portion of the substrate to which the active material layer is not applied is bent in an opposite direction to a wound center.
Resumen de: US2025372694A1
A cathode active material for a lithium secondary battery according to embodiments of the present disclosure includes lithium-metal oxide particles having a sphericity of 0.96 or less and an elongation of 0.25 to 0.5. The elongation is calculated as (1−b/a). Here, a denotes the length of the major axis of the lithium-metal oxide particle in a cross-sectional image of the lithium-metal oxide particles observed using SEM, and b denotes the length of the minor axis of the lithium-metal oxide particle in the cross-sectional SEM image of the lithium-metal oxide particles.
Resumen de: US2025372689A1
An apparatus and a method for manufacturing a secondary battery involve an electrode assembly being horizontally inserted into a case in a state in which the case and the electrode assembly are placed horizontally in order to prevent deformation of related parts such as a current collector due to the weight of the electrode assembly. The apparatus for manufacturing a secondary battery includes a horizontal insert unit in which a cap plate is assembled and which horizontally inserts a horizontally mounted electrode assembly into an opening of a horizontally mounted case.
Resumen de: US2025373016A1
An electric power supply system includes: a first electric power supply part that utilizes a commercial electric power supply source; a second electric power supply part that utilizes a vehicle battery or other supply source; a third electric power supply part that utilizes a fuel cell; a fourth electric power supply part that utilizes photovoltaic electric power generation; a first electric power supply line for supplying electric power to an important appliance group; a second electric power supply line for supplying electric power to a general appliance group; and a distribution board. The distribution board includes: a first switch to switch over the first electric power supply part and the second electric power supply part at an input; a second switch to switch over the third electric power supply part and an output of the first switch at an input, the second switch having an output connected to the first electric power supply line; and a third switch to switch over the fourth electric power supply part and the output of the first switch at an input, the third switch having an output connected to the second electric power supply line.
Resumen de: US2025373026A1
A communication device executes a state information transmission process of transmitting a plurality of types of battery state information from a battery to a BMS via serial communication. The state information transmission process includes: a process of transmitting a frame including the plurality of types of battery state information from the battery; a process of replacing an order of the plurality of types of battery state information in the frame transmitted from the battery with a predetermined order common to other frames; a process of assigning battery No. information to the frame in which the order of the plurality of types of battery state information is replaced with the predetermined order; and a process of transmitting, to the BMS, the frame in which the order of the plurality of types of battery state information is replaced with the predetermined order and to which the battery No. information is assigned.
Resumen de: US2025372643A1
A positive electrode active material comprises a secondary particle. The secondary particle includes crystallites. The crystallites extend radially from a center of the secondary particle toward outside. Each of the crystallites includes a lithium-metal composite oxide. The lithium-metal composite oxide has a lamellar-rock-salt-type structure. In a surface of the secondary particle, an open pore is formed between the crystallites that are adjacent to each other. The open pore has a pore diameter of 250 nm or more.
Resumen de: US2025372748A1
Provided is a method that is for treating a battery member containing a sulfide, and that is capable of effectively removing hydrogen sulfide generated when the battery member is brought into contact with a treatment liquid. The method is for treating a battery member containing lithium metal and a sulfide, the method comprising: a nitrification step S1 for bringing the battery member into contact with nitrogen gas to obtain a substance containing lithium nitride and the sulfide; and a treatment step S2 for bringing the substance containing lithium nitride and the sulfide into contact with a treatment liquid containing water.
Resumen de: US2025372681A1
A fuel cell module includes a fuel cell stack, and a controller configured to start power generation of the fuel cell stack when a charging rate of a power storage device directly connected between the fuel cell stack and a load becomes a lower limit value or less, and configured to stop power generation of the fuel cell stack when the charging rate of the power storage device becomes an upper limit value or more. The fuel cell stack is connected to the power storage device not through a power conversion circuit, and the controller changes at least one of the lower limit value and the upper limit value based on a deterioration degree of the fuel cell stack.
Resumen de: US2025373032A1
Disclosed is a fast switch-off circuit for a charging tube of a battery management system, which includes a control circuit, a pull-down discharge circuit, and a discharge detection circuit. The control circuit synchronously switches on the pull-down discharge circuit when switching off the charging tube; and switches off the pull-down discharge circuit when detecting a trigger signal. The pull-down discharge circuit pulls down a gate voltage of the charging tube to a ground potential so as to discharge fast, when being switched on. The discharge detection circuit generates and transmits the trigger signal to the control circuit, when the gate voltage of the charging tube drops to a low-level threshold or a pull-down time of the charging tube reaches a time threshold, after the pull-down discharge circuit is switched on. The fast switch-off circuit ensures fast switch-off for a charging tube of a battery management system, while minimizing power consumption.
Resumen de: US2025373008A1
A power supply circuit and an electronic device. The power supply circuit includes: a battery module, where the battery module includes at least one power supply branch, each power supply branch includes a first battery cell and a second battery cell, and a negative electrode of the first battery cell in each power supply branch is connected to a positive electrode of the second battery cell; a first voltage converter, where an input terminal thereof is connected to a positive electrode of the first battery cell, an output terminal thereof is connected to a first load; and a second voltage converter, where an input terminal thereof is connected to the positive electrode of the second battery cell, an output terminal thereof is connected to a second load.
Resumen de: US2025372646A1
A battery cell, a battery including the battery cell, and an electrical apparatus are provided. The battery cell includes a positive electrode plate and an electrolyte solution. The positive electrode plate contains a positive electrode active material comprising an inner core and a coating layer. The inner core includes a lithium-containing complex with nickel, cobalt, manganese, and additional elements selected from one or more of zirconium, strontium, boron, titanium, magnesium, tin, terbium, tungsten, niobium, antimony, or aluminum, as well as anions selected from sulfur, nitrogen, fluorine, chlorine, bromine, or iodine. The coating layer includes one or more metal elements selected from cobalt, zirconium, strontium, boron, titanium, magnesium, tin, terbium, tungsten, niobium, antimony, or aluminum. The electrolyte solution includes an additive containing an organic compound with both silicon-nitrogen and silicon-oxygen bonds. This combination improves the electrochemical performance and stability of the battery during operation.
Resumen de: US2025372737A1
An energy storage system has a collection of one or more battery modules and a battery management system associated with the collection of battery modules. The battery management system is detects a battery event which indicates potential upcoming damage for the collection of battery modules. The battery management system also selects—based on a type of the battery event (e.g., temperature event, electrical event, chemical event)—a sub-set of measurement data from a set of available measurement data relating to the collection of battery modules, and causes the selected sub-set of measurement data to be stored at a storing location which is unaffected by the potential upcoming battery damage for the collection of battery modules.
Resumen de: US2025372690A1
A heating press for pressing a folded portion formed on a terrace disposed on at least a portion of a circumference of an electrode-accommodating portion of a battery cell, including a first press including a first pressing surface pressing a first surface of the folded portion; and a second press including a second pressing surface pressing a second surface of the folded portion and a protruding pressing surface pressing an inner side region of the terrace, wherein the protruding pressing surface protrudes from the second pressing surface toward the first pressing surface and presses the inner side region together with the first pressing surface, and the inner side region is located between the folded portion and the electrode-accommodating portion, is disclosed.
Resumen de: US2025372658A1
An electrode plate includes a substrate, an active material layer on the substrate, a hydrophobic coating layer on at least an edge of the active material layer, the hydrophobic coating layer having a hydrophobic functional group, and an insulating portion at a boundary between the active material layer and the substrate, the insulating portion covering at least a part of a side surface of the active material layer below the hydrophobic coating layer.
Nº publicación: US2025372659A1 04/12/2025
Solicitante:
LG ENERGY SOLUTION LTD [KR]
LG Energy Solution, Ltd
Resumen de: US2025372659A1
A positive electrode of a secondary battery includes: a positive electrode active material layer, which in turn includes a positive electrode active material, a conductive material, a binder, and a positive electrode additive. The positive electrode additive includes substituents with a cyclic sulfonic ester (sultone) or cyclic sulfate structure, so that the oxygen release from a positive electrode active material is suppressed, which improves the structural stability of the positive electrode active material.
BOPI
Sede Electrónica
