Alerta

BATTERY CELL, BATTERY, AND ELECTRIC DEVICE

Resumen de: US20260221624A1

A battery cell includes a housing, an electrode assembly, and an electrode terminal. The housing is provided with a wall portion, and a mounting hole is formed on the wall portion. The electrode assembly is accommodated within the housing. The electrode terminal extends through the mounting hole; the electrode terminal includes a first terminal portion and a second terminal portion that are separately provided; the first terminal portion and the second terminal portion are arranged along the thickness direction of the wall portion and connected to each other; at least a part of the first terminal portion is located on a side of the wall portion facing the electrode assembly and electrically connected to the electrode assembly; at least a part of the second terminal portion is located on a side of the wall portion away from the electrode assembly.

GASKET FOR ELECTROCHEMICAL DEVICE, AND ELECTROCHEMICAL DEVICE

Resumen de: US20260221563A1

0000 A gasket for an electrochemical device with excellent water vapor barrier properties, and an electrochemical device including the gasket. A gasket for an electrochemical device containing polybutylene terephthalate, the gasket having a compression ratio upon installation of 5% or more.

Film and Battery Pouch Comprising Same

Resumen de: US20260221593A1

The present disclosure can provide a film with excellent durability against an electrolyte, capable of effectively blocking the inflow of external moisture and atmosphere (air) into a battery while continuously and non-destructively discharging gas, generated inside the battery, under a low pressure condition as well as a high pressure condition. The present disclosure can provide a battery pouch capable of further improving the stability and lifespan of the battery by comprising the film in at least a portion thereof.

Battery Pack and Vehicle Comprising the Battery Pack

Resumen de: US20260221588A1

0000 A battery pack including a plurality of battery cells having venting portions and a pack frame configured to accommodate the plurality of battery cells and having a venting guide portion in an area corresponding to the venting portion of the plurality of battery cells is provided.

BATTERY TRACKING SYSTEM

Resumen de: US20260222771A1

0000 A battery tracking system is provided that includes a battery including a control unit that monitors a condition indicating when the battery has been detached from a device and transmit a signal including identification information of the detached battery, an external device that receives the signal transmitted from the detached battery and transmit location information of the external device together with the received signal, and a controller that receives the location information and the signal transmitted from the external device and determine a location of the detached battery based on the received location information and the signal.

CELL AND ELECTRONIC DEVICE

Resumen de: US20260221614A1

0000 A cell includes an electrode assembly, a first tab, a second tab, and a packaging member. The first tab and the second tab are respectively connected to the electrode assembly. The first tab and the second tab are located on the same side of the electrode assembly. The packaging member includes an electrode assembly accommodating portion and a tab packaging portion in communication with the electrode assembly accommodating portion. The tab packaging portion extends away from the electrode assembly accommodating portion in a first direction. A size of the tab packaging portion is smaller than that of the electrode assembly accommodating portion in a second direction. The first tab and the second tab are provided with a bending portion extending in a thickness direction of the electrode assembly. The electrode assembly is accommodated in the electrode assembly accommodating portion. The bending portions are accommodated in the tab packaging portion.

NAIL PENETRATION TEST METHOD AND DEVICE

Resumen de: US20260221529A1

0000 Provided are a nail penetration test method and device, which can improve the nail penetration test performance. The method includes: controlling a penetrating nail to move towards the direction where the penetrating nail is penetrated into a battery cell; and when the voltage between the penetrating nail and a first electrode terminal of the battery cell exceeds a preset voltage, continuing controlling the penetrating nail to penetrate into a predetermined depth.

POSITIVE ELECTRODE ACTIVE MATERIAL AND PREPARATION METHOD THEREFOR, POSITIVE ELECTRODE SHEET, BATTERY, AND ELECTRIC DEVICE

Resumen de: WO2026157135A1

The present application provides a positive electrode active material and a preparation method therefor, a positive electrode sheet, a battery, and an electric device. The positive electrode active material comprises a substrate; and a coating material comprising a compound represented by formula II: LaαZrβMγM'δOε formula II, wherein M comprises at least one element of Li, Na, Ca, Mg, Ba and Sr, M' comprises at least one element of Al, Ti, Sn, Nb, Ta, W and Mo, 0<α≤3, 0<β≤2, 0≤γ<0.5, 0≤δ<0.5, and 5≤ε≤10. In the X-ray diffraction pattern of the coating material, the full width at half maximum of the diffraction peak (222) is FWHM(222), and satisfies: 0.3≤FWHM(222)≤0.53.

RESIDENTIAL BATTERY MODULE AND BATTERY ENCLOSURE ASSEMBLY

Resumen de: WO2026157200A1

A residential battery module and a battery enclosure assembly. The residential battery module comprises a base (1), a controller (2), and battery packs (3) connected in series or in parallel between the base (1) and the controller (2), wherein each battery pack (3) is provided with a quick-connect male terminal connector (31) and a quick-connect female terminal connector (32), the quick-connect male terminal connector (31) and the quick-connect female terminal connector (32) each comprise a power port and a communication port, the power port routes a power line that connects to a positive/negative terminal of the battery pack (3), the communication port routes a communication line that connects to the battery pack (3), and the quick-connect male terminal connector (31) of one battery pack (3) mates with the quick-connect female terminal connector (32) of another batter pack (3) to achieve a series or parallel connection.

BATTERY

Resumen de: WO2026157053A1

The present disclosure relates to the technical field of batteries. Specifically, the present disclosure relates to a battery, comprising an electrolyte and a negative electrode sheet, wherein the electrolyte comprises a first additive and a second additive, and the first additive has a structure as represented by formula 1; the second additive comprises at least one of tripropargyl phosphate, propyl bis(2-propynyl) phosphate, and ethyl bis(2-propynyl) phosphate; and the negative electrode sheet comprises a negative electrode active material, and the negative electrode active material comprises a silicon element. The battery containing the above additives has high interface flatness and good cycling performance.

BATTERY

Resumen de: WO2026157790A1

The present application relates to the technical field of batteries. Specifically disclosed is a battery. A mounting hole and a plurality of support platforms are provided on a cover plate body or a case of the battery, an explosion-proof valve is arranged in the mounting hole, the plurality of support platforms are arranged in the circumferential direction of the mounting hole, the plurality of support platforms are spaced apart from the mounting hole, and two adjacent support platforms are also spaced apart from each other. A plastic member is arranged on the side of the cover plate body or the case close to an accommodating cavity, and the ends of the support platforms facing away from the cover plate body or the case all extend towards the plastic member. After thermal runaway occurs in the battery and the plastic member is melted, the plurality of support platforms arranged on the cover plate body or the case can continue to support an electrode group, thereby preventing the mounting hole from being blocked by the electrode group, and allowing a high-temperature and high-pressure gas to flow to the mounting hole and be directionally discharged by means of the explosion-proof valve arranged in the mounting hole; therefore, the explosion-proof valve has a high exhaust rate, and can realize rapid pressure relief, and the battery then has good safety.

NEGATIVE ELECTRODE ACTIVE MATERIAL AND PREPARATION METHOD THEREFOR, ELECTRODE, AND BATTERY

Resumen de: WO2026157685A1

The present application provides a negative electrode active material and a preparation method therefor, an electrode, and a battery. A negative electrode active material particle comprises a porous carbon framework, nano-silicon, and an amorphous carbon film. Negative electrode active material particles comprise silicon-deficient particles, the mass content of silicon in the silicon-deficient particles is less than or equal to 15%, the quantity proportion Dlack of the silicon-deficient particles in the negative electrode active material particles is less than or equal to 35%, and the product DS of the mass content Wtotal of silicon in the negative electrode active material and the quantity proportion Dlack of the silicon-deficient particles is less than or equal to 0.15. In the negative electrode active material provided by the present application, the quantity proportion of the silicon-deficient particles therein is controlled, and the deposition uniformity of the nano-silicon in the negative electrode active material is improved, thereby avoiding the presence of a large amount of ineffective porous carbon particles, and also avoiding the severe enrichment of the nano-silicon in some particles. Therefore, the coulombic efficiency and cycle stability of the material are improved, and the cycle expansion is reduced.

POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR, POSITIVE ELECTRODE SHEET, AND SODIUM-ION BATTERY

Resumen de: WO2026156829A1

The present application relates to the technical field of sodium-ion batteries, and provides a positive electrode material and a preparation method therefor, a positive electrode sheet, and a sodium-ion battery, wherein the positive electrode material comprises a Prussian blue material having a molecular formula of NaxFeyFe(CN)zF6-z•nH2O•mHCl, wherein 1.90≤x≤2.20, 0.9≤y≤1.2, 4.20≤z≤5.50, 1.00≤n≤1.75, and 0.001≤m≤0.007. The present application is beneficial for improving the structural stability of the positive electrode material, and enabling the efficient diffusion channel of sodium ions to be optimized, thereby improving the sodium storage capacity and cycle stability. By means of the synergistic effect between the ions, the problem of a high crystal water content in the positive electrode material is solved, the structural stability and the stability of the electrochemical sodium storage performance of the positive electrode material are improved, the production cost is also reduced, and the application range of the sodium ion battery is expanded.

LITHIUM MANGANESE IRON PHOSPHATE POSITIVE ELECTRODE ACTIVE MATERIAL AND PREPARATION METHOD THEREFOR, POSITIVE ELECTRODE SHEET, LITHIUM SECONDARY BATTERY, AND ELECTRIC DEVICE

Resumen de: WO2026157136A1

The present application provides a lithium manganese iron phosphate positive electrode active material and a preparation method therefor, a positive electrode sheet, a lithium secondary battery, and an electric device. The lithium manganese iron phosphate positive electrode active material is secondary particles formed by the aggregation of primary particles, the secondary particles have pores inside, and the porosity of the secondary particles is 20-55%. The molar ratio of P to the metal elements other than Li on the surface of the primary particles is m1, the molar ratio of P to the metal elements other than Li in the bulk phase of the primary particles is m2, and same satisfy 1.01≤m1/m2≤1.07.

POSITIVE ELECTRODE MATERIAL, SECONDARY BATTERY, AND ELECTRONIC DEVICE

Resumen de: WO2026158004A1

The present application discloses a positive electrode material, a secondary battery, and an electronic device. The positive electrode material comprises a core and a carbon coating layer. The carbon coating layer covers at least a portion of the surface of the core. The core comprises a lithium phosphate salt, and the carbon coating layer comprises a nitrogen element. Based on a total mass of the positive electrode material, a mass percentage of a carbon element is A%, wherein 0.8≤A≤3. Based on the total mass of the positive electrode material, a mass percentage of the nitrogen element is B%, wherein 0.2≤B≤0.8. The secondary battery provided by the present application has better electrochemical performance, particularly better rate discharge performance and cycle performance.

BATTERY AND TERMINAL APPARATUS

Resumen de: WO2026157863A1

A battery and a terminal apparatus. The battery comprises a battery cell, a circuit board assembly, and adapter tabs. The battery cell comprises an electrode assembly and a packaging pouch, wherein the packaging pouch comprises a main body portion and a sealing portion, and the electrode assembly is disposed in the main body portion. The main body portion comprises a top wall and a bottom wall, and when viewed in a first direction, the top wall and the bottom wall are spaced apart from each other in a second direction. The top wall comprises a first body wall and a first recessed wall, and the first recessed wall is recessed towards the bottom wall in a second direction relative to the first body wall. The sealing portion comprises a top sealing portion, and the top sealing portion comprises a first portion and a second portion, wherein the first portion is connected to the first body wall, the second portion is connected to the first recessed wall and the first portion, and the second portion and the first recessed wall form a first accommodating space. The circuit board assembly comprises a substrate, the substrate comprises a bearing portion, and the bearing portion is located in the first accommodating space. One end of each adapter tab is electrically connected to the electrode assembly, and the other end of each adapter tab extends from the second portion and is electrically connected to the bearing portion. The battery is beneficial for improving the energy density.

WIRELESS DEVICE AND POWER SUPPLY UNIT

Resumen de: US20260221528A1

A wireless device of a battery monitoring system includes a wireless antenna and a proximate conductor that overlaps at least a portion of a projection plane of the wireless antenna in a predefined projection direction.

SOLID-STATE ELECTROLYTE, AND PREPARATION METHOD THEREFOR AND USE THEREOF

Resumen de: WO2026157320A1

A solid-state electrolyte, and a preparation method therefor and the use thereof. The solid-state electrolyte comprises a solid-state electrolyte substrate and a coating layer on the surface of the solid-state electrolyte substrate, wherein the coating layer comprises an inorganic substance having a sublimation temperature of less than 500°C; and the coating coverage of the solid-state electrolyte is greater than or equal to 90%. In the solid-state electrolyte, by introducing the coating layer onto the surface of the solid-state electrolyte substrate and using the inorganic substance having a sublimation temperature of less than 500°C as a coating material, with the coating coverage being greater than or equal to 90%, the interfacial impedance between the solid-state electrolyte and an electrode material can be reduced, and microscopic defects and pores on the surface of the solid-state electrolyte substrate can be filled; moreover, direct exposure of the solid-state electrolyte matrix to the environment can be prevented, and chemical bonds can be formed with certain metal elements in the solid-state electrolyte substrate, thereby improving the ionic conductivity retention and stability of the solid-state electrolyte. When applied to a battery, the solid-state electrolyte can improve the specific capacity and the initial coulombic efficiency of the battery.

BATTERY CELL AND ELECTRIC DEVICE

Resumen de: WO2026158241A1

A battery cell and an electric device. The battery cell comprises an electrode assembly; the electrode assembly comprises a first electrode sheet; the first electrode sheet comprises a first current collector and a first active material layer; in the thickness direction of the first current collector, at least one side of the first current collector is provided with the first active material layer; a plurality of grooves are provided at intervals on the surface of at least one first active material layer facing away from the first current collector; and in the width direction of the first current collector, each groove is spaced from both ends of the first active material layer, so as to reduce the risk of wrinkling and edge curling in edge regions of the first electrode sheet in the width direction, thereby reducing the risk of the occurrence of problems such as lithium plating and short circuits in the battery cell caused by wrinkling of the first electrode sheet, and improving the safety performance of the battery cell.

POSITIVE ELECTRODE SHEET, PREPARATION METHOD THEREFOR, SECONDARY BATTERY, AND ELECTRONIC APPARATUS

Resumen de: WO2026157983A1

The present application provides a positive electrode sheet, a preparation method therefor, a secondary battery, and an electronic apparatus. The positive electrode sheet comprises a positive electrode current collector, a positive electrode material layer, and an insulating layer, wherein the positive electrode sheet comprises an uncoated foil region and a coated region, the positive electrode material layer and the insulating layer are located within the coated region, the insulating layer and the positive electrode material layer are connected in a length direction of the positive electrode current collector, and the insulating layer is closer to the uncoated foil region than the positive electrode material layer; in a direction from the positive electrode material layer to the insulating layer, the positive electrode material layer comprises a first edge and a second edge opposite to each other, and the first edge is close to the uncoated foil region. When the positive electrode sheet undergoes a tensile strength test in the aforementioned direction, a fracture location of the positive electrode sheet is between the first edge and the second edge, and a distance between the fracture location and the first edge is x mm, wherein 3 < x ≤ 20. Using the positive electrode sheet provided in the present application in secondary batteries allows the secondary battery to have good safety performance.

LASER WELDING METHOD

Resumen de: US20260216824A1

A laser welding method for jointing stacked metal foils in which a plurality of copper-based foils are stacked and a tab plate formed of a copper-based material is provided. The laser welding method includes placing one end of the stacked metal foils on the tab plate; irradiating a plurality of tack welding positions on the one end of the stacked metal foils with a blue laser beam; and irradiating a welding line on the tab plate along the one end of the stacked metal foils with the blue laser beam.

Composition for Electrode Insulation Coating, Electrode, and Method for Manufacturing Electrode

Resumen de: US20260221464A1

A composition for insulating coating includes inorganic particles; a rubber-based binder; a fluorine-based binder; a dispersant; and a solvent. The fluorine-based binder is included in an amount of 7 parts by weight or less with respect to 100 parts by weight of solid content excluding the solvent.The composition for insulating coating according to the present disclosure when applied to the current collector, has a thicker wet thickness, thereby suppressing the sliding phenomenon in which the slurry for electrode flows down, and has the effect of significantly reducing the sliding length of the electrode active material layer. An electrode and a method for manufacturing the electrode including the same are also provided.

LITHIUM IRON PHOSPHATE POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR, AND ELECTROCHEMICAL DEVICE

Resumen de: WO2026157291A1

A lithium iron phosphate positive electrode material and a preparation method therefor, and an electrochemical device. The preparation method of the present application comprises: mixing a phosphorus source, an iron source, a lithium source, a first carbon source, lithium fluoride, a first additive and a solvent to form a primary mixed material, and performing primary sintering to obtain a matrix material, wherein the mass percentage M of the lithium fluoride relative to the total mass of the iron source and the phosphorus source is 0-0.1%; mixing the matrix material, a second carbon source, lithium fluoride, a second additive and a solvent to form a secondary mixed material, wherein the mass percentage N of the lithium fluoride added in the step relative to the total mass of the iron source and the phosphorus source is 0-0.3%, and N and M are not both 0; and grinding the secondary mixed material to obtain a secondary mixed material A and a secondary mixed material B having different particle sizes, and then performing mixing and secondary sintering to obtain a lithium iron phosphate positive electrode material having good compaction density, rate capability and low-temperature performance.

POWER BATTERY PACK AND ENGINEERING VEHICLE

Resumen de: WO2026157965A1

The present disclosure relates to the field of power batteries, and relates to a power battery pack and an engineering vehicle, for use in improving the structure of the power battery pack and realizing high capacity and high voltage of the power battery pack. The power battery pack comprises a case, a bracket assembly, and a plurality of battery cell assemblies. The case comprises a first storage cavity; the bracket assembly is located in the first storage cavity; the bracket assembly comprises a plurality of layers of second storage cavities; each battery cell assembly comprises a plurality of battery cells; and the battery cell assemblies are placed in the second storage cavity of each bracket. The power battery pack formed by the described technical solution is provided with a plurality of layers of battery cell assemblies, so that a single power battery pack has a high voltage, a high capacity, and high structural strength. A single power battery pack can provide a high-voltage platform for a vehicle, without requiring external series connection of additional battery packs, thereby simplifying the high-voltage architecture of a battery system and reducing the number of battery packs in the battery system.

SECONDARY BATTERY

Nº publicación: US20260221510A1 30/07/2026

Solicitante:

MURATA MFG CO LTD [JP]
MURATA MANUFACTURING CO., LTD.

Resumen de: US20260221510A1

A secondary battery is provided and includes a positive electrode, a negative electrode, and an electrolytic solution. The negative electrode includes a negative electrode active material layer, and a negative electrode film provided on a surface of the negative electrode active material layer. The negative electrode film includes a fluorine compound including a carbon-fluorine bond. Based on an analysis of the negative electrode film by fluorine-19 nuclear magnetic resonance spectroscopy, two or more peaks are detectable within a range of a chemical shift of greater than or equal to −90 ppm and less than or equal to −70 ppm. A coupling constant associated with the two or more peaks is 50 Hz or less.