Alerta

POSITIVE ELECTRODE ACTIVE COMPOSITE MATERIAL, PREPARATION METHOD THEREFOR, POSITIVE ELECTRODE PLATE, SECONDARY BATTERY, AND POWER CONSUMING APPARATUS

Resumen de: US2025372617A1

A positive electrode active composite material, a preparation method therefor, a positive electrode plate, a secondary battery, and a power consuming apparatus are disclosed. The positive electrode active composite material includes a carbon material, a transition metal M and a polyanionic compound. The positive electrode active composite material has a good degree of graphitization and good processability, and the compaction density of the positive electrode active composite material and the compaction density of a positive electrode film layer are increased, improving the performance of batteries.

ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE

Resumen de: US2025372613A1

An electrochemical device includes a positive electrode plate. The positive electrode plate includes a positive active material layer. The positive active material layer includes a positive active material. After the electrochemical device is discharged, a molar fraction of an M1 element in the positive active material included in the positive electrode plate in a fully discharged state is a. The M1 element includes Ni, Co, and Mn. A molar fraction of Ni in the positive active material is b. A molar fraction of Mn in the positive active material is c. A molar fraction of an M2 element in the positive active material is d. The M2 element includes at least one of Na, K, or Mg. The value of b/a is 0.4 to 0.6, the value of c/a is 0.4 to 0.6, and the value of d/a is 0.04 to 0.06.

POWER SUPPLY CIRCUIT AND ELECTRONIC DEVICE

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.

BATTERY CELL, BATTERY COMPRISING SAME, AND ELECTRICAL APPARATUS

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.

MANAGEMENT OF MEASUREMENT DATA RELATING TO AN ENERGY STORAGE SYSTEM

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.

SECONDARY BATTERY, BATTERY PACK, ENERGY STORAGE SYSTEM AND ELECTRIC APPARATUS

Resumen de: US2025372648A1

The present disclosure relates to a secondary battery and a method for preparing the same, a battery pack, an energy storage system, and an electric apparatus. The secondary battery includes cathode active particles. The cathode active particles include a core and a carbon layer coating the core, and the core includes at least one of a lithium transition metal phosphate and a lithium transition metal oxide. Part of the cathode active particles are cracked, an average width of cracks is in a range of 10 nm to 30 nm, and an average length thereof is in a range of 300 nm to 800 nm.

Lithium-ion Battery Positive Electrode and Lithium-ion Battery

Resumen de: US2025372644A1

The present invention relates to the field of lithium batteries, in particular to a lithium-ion battery positive electrode and a lithium-ion battery. The positive electrode comprises a positive electrode current collector and a positive electrode material on the positive electrode current collector, the positive electrode material comprising a positive electrode active material, the positive electrode active material at least comprising a polycrystalline ternary material and a monocrystalline ternary material.

BATTERY CELL, BATTERY, AND ELECTRICAL DEVICE

Resumen de: US2025372844A1

A battery cell, a battery, and an electrical device are described. The battery cell includes a shell, an electrode assembly, a first insulating protective layer, and a second insulating protective layer. The first insulating protective layer is disposed on an inner wall of the shell, and the second insulating protective layer is configured to envelop at least a portion of the electrode assembly. The battery cell provided in the embodiments of the present application uses the first insulating protective layer and the second insulating protective layer to separate the shell from the electrode assembly, thereby increasing the creepage distance between the shell and the electrode assembly. This can achieve the purpose of improving the breakdown voltage resistance between the shell and the electrode assembly, thereby effectively enhancing the high-voltage breakdown resistance of the shell, and consequently reducing the probability of combustion or explosion of the battery cell.

BATTERY CELL, BATTERY, AND POWER CONSUMING DEVICE

Resumen de: US2025372847A1

A battery cell includes a housing and a protective member. The housing includes a case and an end cover. An opening is formed in at least one end of the case in a first direction, and the end cover closes the opening. The end cover is connected to the case to form a connection portion. The protective member includes a main body portion and a first flange portion. The main body portion surrounds an outer surface of the case. In the first direction, the first flange portion is connected to an end of the main body portion, and the first flange portion is disposed on the end cover and covers at least a part of the connection portion. The main body portion of the protective member surrounds the outer surface of the case such that the case can be protected, thereby reducing the risk of damage to the case.

SOLID STATE ELECTROLYTE AND SOLID STATE BATTERY

Resumen de: US2025372701A1

A solid state electrolyte (SSE) including a dense membrane including LLZO having a thickness equal to or lower than 100 μm and a Sb-including coating layer having a thickness between 1 and 20 nm provided on a surface of the dense membrane, the dense membrane having a density equal to or higher than 90% of the theoretical density of the membrane, wherein the surface of dense membrane onto which the coating layer is provided is substantially free of Li2CO3, wherein the SSE comprises a first Li—Sb alloy at the interface of the Sb-including coating layer and the LLZO-including dense membrane, wherein the thicknesses are as calculated from SEM images of the SSE. Also, a solid state battery (SSB) including the SSE and to methods of producing the SSE and the SSB.

BATTERY CELL, BATTERY, POWER CONSUMING APPARATUS, AND BRACKET

Resumen de: US2025372807A1

A battery cell, a battery, a power-consuming apparatus, and a bracket are disclosed. The battery cell includes a housing with an explosion-proof valve, an electrode assembly disposed within the housing, and a bracket. The bracket includes a body having a first side and a second side opposite each other, and an exhaust hole positioned to align with the explosion-proof valve. A first abutting portion is arranged on the first side to abut an end portion of the electrode assembly, such that the exhaust hole and the end portion form a first exhaust channel. The design enhances gas exhaust capability, reduces the risk of combustion or explosion, and mitigates impact on adjacent cells, thereby improving battery reliability and stability.

CYLINDRICAL SECONDARY BATTERY

Resumen de: US2025372774A1

A cylindrical secondary battery is provided and including: an electrode wound body having a structure in which a band-shaped positive electrode and a band-shaped negative electrode are stacked and wound with a separator interposed therebetween; a battery can accommodating the electrode wound body with one end portion being open while the electrode wound body is accommodated; and a battery lid provided at the one end portion of the battery can and having two or more opening portions, wherein the two or more opening portions have a non-overlapping form during rotation that does not overlap the two or more opening portions before rotation when the two or more opening portions are rotated by more than 0° and less than 360° about an axis of a cylindrical shape of the secondary battery in top view, and the battery lid has a cleavage impression at any one of joints between two adjacent opening portions out of the two or more opening portions.

Fuel Cell System and Method of Controlling Same

Resumen de: US2025372770A1

A fuel cell system includes a battery and a fuel cell stack, each configured to output electrical energy to satisfy total final required power, and a controller configured to perform a method of controlling the fuel cell system. The controller may be configured to calculate a required power proportion of the fuel cell stack to satisfy the final required power, to calculate a final power proportion of the stack by calibrating the required power proportion of the fuel cell stack using a power adjustment value depending on a state of health (SoH) of the fuel cell stack, and to control power generation of the fuel cell stack according to the calculated final power proportion.

CYLINDRICAL BATTERY

Resumen de: US2025372842A1

A cylindrical battery is provided and including a top cover, and a safety valve, wherein the safety valve has a safety cover and a stripper disk positioned inward in a battery axial direction from the safety cover, and a predetermined portion of the safety cover positioned between a portion where the safety cover and the top cover are in contact with each other and a portion where the safety cover and the stripper disk are in contact with each other is an inclined portion inclined inward in a battery axial direction with respect to a contact surface where the safety cover and the top cover are in contact with each other.

BATTERY CELL, BATTERY, AND ELECTRIC DEVICE

Resumen de: US2025372808A1

The present application provides a battery cell, a battery, and an electric device. The battery cell includes a housing, a pressure relief mechanism, and a protective member. The housing includes a wall portion. The pressure relief mechanism is provided at the wall portion, and can be actuated to release gas within the housing in a case where an internal pressure or temperature of the battery cell reaches a threshold value. The protective member has a melting point greater than or equal to 300° C., and the protective member covers at least part of the pressure relief mechanism in a thickness direction of the wall portion.

Thermal Runaway Fumes Management

Resumen de: US2025372804A1

The invention relates to an assembly for a vehicle protecting the passenger cell against contamination by a gas that is released from a battery module in case of thermal runaway. The released gas propagates into a hollow element of the vehicle providing a passageway which is blocked at a location by an expanded cured adhesive material thus providing a barrier to the gas.

NEGATIVE ELECTRODE SHEET, SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK, AND ELECTRIC DEVICE

Resumen de: US2025372836A1

A negative electrode sheet, a secondary battery, a battery module, a battery pack, and an electric device. The negative electrode sheet includes an electrode sheet body, a tab, and a connecting member. The electrode sheet body includes a plurality of layers of carbon fibers. At least two of the plurality of layers of carbon fibers are connected to the connecting member. The tab is electrically connected to the electrode sheet body through the connecting member.

PRESSURE RELIEF ASSEMBLY, BATTERY MODULE, BATTERY PACK, AND POWERED DEVICE

Resumen de: US2025372799A1

Provided are a pressure relief assembly, a battery module, a battery pack, and a powered device. The pressure relief assembly includes a cooling plate and an isolation assembly. The cooling plate is configured to cool a cell, and a pressure relief inlet is disposed on the cooling plate. The isolation assembly is connected to the cooling plate to define a pressure relief cavity. A pressure relief outlet is disposed on the isolation assembly, and the pressure relief inlet communicates with the pressure relief outlet through the pressure relief cavity.

MULTI-CELL MONOLITHIC THIN-FILM BATTERY AND FABRICATION METHOD THEREOF

Resumen de: US2025372830A1

The disclosed invention consists of a multi-cell monolithic thin-film battery (0), comprising one single substrate (1) on which two and more monolithic battery cells, comprising a cathode current collector (20), a cathode electrode layer (21), a solid electrolyte layer (22) and an anode current collector (23) deposited onto each other, wherein all monolithic battery cells (2, 2′) are produced by thin-film techniques with layer thicknesses between 10 nm and 20 μm, avoiding an anode layer during manufacturing, therefore named monolithic anode-free battery cells (2, 2′), with improved properties and based on a viable method for connecting multiple cells to a stacked thin-film battery. This is reached by deposition of all layers of the resulting multi-cell monolithic thin-film battery (0) are manufactured on top of each other on the single substrate (1), a blocking layer as material layer blocking electrons and ions is deposited between the cathode current collector (20) and the anode current collector (23) of each adjacent monolithic anode-free battery cells (2, 2′), with deposited thickness of the blocking layer between 5 nm and 1 μm and the first layer of the next adjacent monolithic anode-free battery cell (2′) is deposited on the last layer of the previous monolithic anode-free battery cell (2).

BATTERY AND BATTERY SWITCHING SYSTEM FOR ELECTRIC VEHICLES

Resumen de: US2025368056A1

This disclosure provides an improved universal interchangeable battery for electric vehicles forming part of a battery swapping ecosystem that includes electric vehicles, swappable batteries, a charging/swap station, a battery adaptor for reliable charging and communication, and a mobile application for managing battery swapping within a fleet and a network of charging stations, enabling efficient and user-friendly battery exchanges.

FLEXIBLE CIRCUIT BOARD, ELECTRICAL CONNECTION MODULE AND ITS INSTALLATION METHOD, AND POWER BATTERY PACK

Resumen de: US2025372828A1

A flexible circuit board (10), an electric connection module and its installation method, and a power battery pack (1000) are provided. The flexible circuit board (10) includes a first sampling portion (12), a second sampling portion (13) and a main body (11). The main body (11) is connected to the first sampling portion (12) and the second sampling portion (13). At least one of the first sampling portion (12) and the second sampling portion (13) is provided with a sampling point. The main body (11) is provided with a sampling signal output terminal (101). In a use state, at least a portion of the main body (11) is stacked with the first sampling portion (12) and the second sampling portion (13).

COMPOSITE SEPARATOR AND BATTERY

Resumen de: US2025372818A1

This application provides a composite separator and a battery. In a first aspect, this application provides a composite separator, which includes a base film and an adhesive coating. The adhesive coating includes polyethylene wax particles and inorganic particles. The polyethylene wax particles can play a good adhesive role, prevent dimensional changes caused by release of internal stress, and improve the problem of wrinkling of the separator upon electrolyte injection. The inorganic particles play a supporting role. By adjusting the weight ratio and the size ratio of the polyethylene wax particles and the inorganic particles, and the weight of the polyethylene wax particles per unit area, the air permeability increase before and after providing the adhesive coating and the air permeability increase of the composite separator before and after hot pressing can be reduced on the basis of ensuring the adhesion force of the composite separator.

Rechargeable battery having a holding and receiving apparatus and spring-loaded connection elements

Resumen de: US2025372791A1

A rechargeable battery, preferably as a releasable energy supply for a power tool, comprising at least one energy storage cell and a connection apparatus for releasably connecting the rechargeable battery to a power tool, the connection apparatus comprising at least one first, second and third connection element. The connection apparatus includes a holding and receiving apparatus with a substantially elongate chamber for at least partially receiving the first, second and third connection elements, wherein the first and second connection elements are connected to the holding and receiving apparatus by at least one compensating element in such a way that a relative movement in at least one direction between the first and second connection element and the holding and receiving apparatus can be compensated for, and wherein the first and second connection elements are connected to the third connection element in such a way that a relative movement in at least one direction between the third connection element and the holding and receiving apparatus can be compensated for.

CELL AND BATTERY

Resumen de: US2025372833A1

A cell includes at least one cell core. Each of the at least one cell core includes a positive-electrode sheet, a positive-electrode tab, a negative-electrode sheet, and a negative-electrode tab; the positive-electrode tab is arranged on the positive-electrode sheet; the positive-electrode tab extends away from the positive-electrode sheet; a length of the positive-electrode tab in a direction perpendicular to an extension direction of the positive-electrode tab is L1; the negative-electrode tab is arranged on the negative-electrode sheet; the negative-electrode tab extends away from the negative-electrode sheet, a length of the negative-electrode tab in a direction perpendicular to an extension direction of the negative-electrode tab is L2, where L1/L2=n, and the n is in a range of 1.25≤n≤2.

HOUSING, BATTERY, AND ELECTRIC DEVICE

Nº publicación: US2025372788A1 04/12/2025

Solicitante:

CONTEMPORARY AMPEREX TECH CO LIMITED [CN]
CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Resumen de: US2025372788A1

A housing, a battery, and an electric device, where the housing includes a base plate, a mounting beam, and a module beam, the base plate has a first side surface and a second side surface opposite to each other in a thickness direction, a reinforcement structure is provided on the base plate, the module beam is disposed on the first side surface, the mounting beam is disposed on the second side surface, and the reinforcement structure is configured to connect to the mounting beam and/or the module beam.