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440
resultados
Última actualización
02/11/2026 [09:54:00]
Resultados 100 a 125 de 440
Resumen de: WO2026225988A1
A cathode active material for improving the performance of an electrochemical device is disclosed. According to one aspect, a Li- and Mn-rich cathode active material coated with a lithium iron phosphate compound, a preparation method therefor, a cathode, and an electrochemical device comprising same are disclosed.
Resumen de: WO2026222596A1
Embodiments of the present disclosure provide a battery device and an electric device. The battery device comprises a case assembly, a thermal management assembly, and a battery assembly. The battery assembly comprises a plurality of battery layers stacked in the height direction of the battery device, wherein the plurality of battery layers are arranged in the case assembly. The thermal management assembly comprises a heat exchange member and heating members, wherein at least one medium flow channel is provided inside the heat exchange member, the at least one medium flow channel is configured to allow a heat exchange medium to flow therethrough, and the heat exchange medium is configured to exchange heat with the battery layers. The heat exchange member is arranged between the plurality of battery layers, and the heat exchange member is configured to carry at least some of the battery layers. The heating member is arranged between the battery layer and the heat exchange member, or the heating member is arranged between the battery layer and the case assembly.
Resumen de: US20260338498A1
A cooling heat exchanger including a cooling flow path through which a cooling heat medium flows, and a cooling surface provided on its surface while being configured to be superposed on a cooling target for cooling the cooling target. The cooling heat exchanger includes: a hollow outer wall member in which the cooling flow path is provided, the outer wall member including a pair of cooling walls separately provided at mutually facing portions of the outer wall member and each including the cooling surface formed on its surface; and a plate-shaped inner fin arranged in an internal region of the outer wall member, the inner fin separating the internal region into two in a direction in which the cooling walls face each other while integrally including a first projection and a second projection jutting out from respective surfaces of the inner fin.
Resumen de: US20260343201A1
A battery management system for managing a cell stack. The battery management system includes: a monitoring circuit that monitors the cell stack; and a management circuit that is connected to the monitoring circuit via wireless communication, and manages the cell stack. In the battery management system, the monitoring circuit and the management circuit each include a plurality of wireless communication sections that use wireless-communication modulation schemes that are mutually different, and the wireless-communication modulation schemes that are mutually different include a ultra-wide band (UWB) scheme.
Resumen de: WO2026223162A1
A solid-state battery cell, a battery device, an electric device, a positive electrode, a positive electrode active material, and a preparation method therefor. The solid-state battery cell comprises a positive electrode, an electrolyte layer, and a negative electrode, wherein the positive electrode comprises a positive electrode active material layer. The positive electrode active material layer comprises a positive electrode active material and a sulfide electrolyte. The positive electrode active material comprises a matrix and a coating layer located on at least part of the surface of the matrix, wherein the matrix comprises a lithium transition metal oxide, the lithium transition metal oxide comprises Ni, and the molar proportion of Ni in transition metal elements of the lithium transition metal oxide is 80% or more; and the coating layer comprises a lithium metal sulfide compound LiMexSy. The solid-state battery cell has good cycling performance.
Resumen de: WO2026223399A1
A battery electrolyte, a secondary battery, and an electric device. The battery electrolyte comprises an electrolyte salt, an organic solvent, and additives. The additives include fluoroethylene carbonate, a first additive represented by formula (I), and a second additive represented by formula (II): Formula (I) and Formula (II). In formula (I), R1 is selected from an alkenylene group and an alkynylene group; and R2 and R3 are each selected from an alkyl group and a haloalkyl group. In formula (II), X1, X2, and X3 are each selected from O or S; n1, m n2, and n3 are each 1 or 2; m is 0, 1 or 2; y and z are each 0 or 1; and R4 and R5 are each selected from a hydrogen atom, an alkyl group, and a haloalkyl group. The mass ratio of the first additive to the second additive is (0.3-5):1. By simultaneously adding the first additive and the second additive having specific structures and specific proportions in combination with the fluoroethylene carbonate, the battery electrolyte can simultaneously improve the initial coulombic efficiency, fast-charging performance, and cycle stability of the battery.
Resumen de: WO2026224913A1
One embodiment of the present invention provides a method for manufacturing a secondary battery, the method comprising a step for performing initial charging on an uncharged secondary battery that includes a positive electrode, a negative electrode containing a niobium-containing oxide, and a separator, and that has a structure in which the positive electrode, the separator, and the negative electrode are laminated in a first direction. The method for manufacturing a secondary battery comprises a step for performing initial charging that satisfies formula (1) in a state where a secondary battery group in which N-number (N is 2 or more) of the uncharged secondary batteries are arranged in the first direction is restrained from both sides thereof. (1): 105%≤(T2/T1)≤115% In formula (1), T1 represents the total thickness of N-number of the uncharged secondary batteries, and T2 represents the total thickness of N-number of secondary batteries.
Resumen de: US20260341937A1
Provided is a battery cell. The battery cell includes a housing and a seal assembly. Specifically, the housing has an accommodation space at an interior of the housing and an electrolyte-injection hole formed at a surface of the housing, and the electrolyte-injection hole is in communication with the accommodation space. The seal assembly includes a hot-melt adhesive film, the electrolyte-injection hole is sealed by the hot-melt adhesive film, and the hot-melt adhesive film is configured to be melted at a predetermined temperature.
Resumen de: US20260341927A1
A secondary battery includes an electrode assembly and a current collector. The electrode assembly includes a plurality of first electrode plate portions and a plurality of second electrode plate portions arranged to define a stack along a thickness dimension of the electrode assembly. The thickness dimension is smaller than a longitudinal dimension of the electrode assembly. Each of the plurality of first electrode plate portions includes a first electrode tab and forms a plurality of first electrode tabs, and each of the plurality of second electrode plate portions includes a second electrode tab and forms a plurality of second electrode tabs. The current collector includes at least a portion located between the plurality of first and second electrode tabs. The plurality of first electrode tabs and the plurality of second electrode tabs are offset from one another along the thickness dimension with the current collector interposed therebetween.
Resumen de: WO2026223707A1
The present application relates to the technical field of batteries, and discloses a housing with deformation compensation, which expands outward to form a square housing. The square housing comprises: a main body having a hollow cavity, wherein the main body has an opening; and at an open end of the main body, among two side edges of the main body in the x direction, at least a middle region of each side edge in the x direction is recessed towards the hollow cavity, so as to form a compensation section on the side edge, and form a compensation surface on the side surface where the side edge is located. In the present application, the compensation sections are formed on the two side edges of the open end of the main body in the x direction, and the compensation surfaces are formed on the side surfaces where the side edges are located. When the housing with deformation compensation expands outward, a required square housing is exactly formed, thereby reducing the deformation of the housing, improving the assembly performance and sealing performance between the housing and a cover plate, avoiding problems such as poor welding between the housing and the cover plate and burning of an electrode assembly, ensuring the safety performance of an assembled battery, improving the dimensional accuracy and appearance quality of the assembled battery, and facilitating the use of the battery in pack assembly.
Resumen de: US20260341812A1
A battery management module can include: a switch circuit, coupled between a positive electrode of a battery and a positive output terminal of the battery management module, and being configured to charge or discharge the battery; an analog front-end chip, configured to monitor information of the battery, where the information of the battery comprises at least voltage information and current information of the battery; and where the analog front-end chip comprises a driving circuit configured to generate a driving signal for driving the switch circuit and a diagnostic circuit configured to diagnose a fault condition of the switch circuit.
Resumen de: WO2026223142A1
A lithium-ion secondary battery, an electrical apparatus, and a positive electrode material. The lithium-ion secondary battery comprises a positive electrode sheet, the positive electrode sheet comprising a positive electrode current collector and a positive electrode film layer arranged on at least one side of the positive electrode current collector and comprising a positive electrode material. The positive electrode material comprises a lithium transition metal oxide. The lithium transition metal oxide comprises nickel, cobalt, and element M. Element M comprises manganese and/or aluminum. On the basis of the total number of moles of the nickel, cobalt, and element M, the molar proportion of nickel is greater than or equal to 50% and less than 100%. The lithium transition metal oxide comprises primary particles having a particle size of 0.5 μm to 6 μm. In a first direction, the primary particles sequentially comprise a surface region, a subsurface region, and an interior region. In the first direction, the content of nickel in the interior region is a fixed value, and the content of nickel in the interior region is greater than or equal to the content of nickel in the subsurface region.
Resumen de: WO2026223148A1
The present application provides a battery cell and a manufacturing method therefor, a battery apparatus, and an electrical apparatus. The battery cell comprises a casing having an accommodating cavity. An electrode assembly is disposed within the accommodating cavity. The electrode assembly comprises a first electrode sheet, a second electrode sheet, and an electrolyte layer, the first electrode sheet and the second electrode sheet having opposite polarities. The first electrode sheet and the second electrode sheet are stacked along a stacking direction. The electrolyte layer is used for isolating the first electrode sheet from the second electrode sheet. The first electrode sheet comprises a first main body and a first tab extending from an outer peripheral surface of the first main body. The second electrode sheet comprises a second main body and a second tab extending from an outer peripheral surface of the second main body. A portion of the second main body protrudes beyond the outer peripheral surface of the first main body. A first insulating layer is disposed along an outer periphery of the first main body and connected to the outer peripheral surface of the first main body, and in the stacking direction, at least part of the first insulating layer overlaps with the second main body. In the battery cell provided in the present application, the first insulating layer effectively inhibits edge overlapping of the first electrode sheet and the second electrode sheet.
Resumen de: WO2026224967A1
The present invention is a negative electrode active material having negative electrode active material particles, wherein: the negative electrode active material particles include a porous carbon structure which is a base material; an amorphous low-valence nanosilicon oxide is dispersed inside the porous carbon structure; a part or all of the surfaces of the negative electrode active material particles are covered with a carbon-based layer separate from the base material porous carbon; Si-C bonds exist in at least a portion of the negative electrode active material particles; and a low-valence nanosilicon oxide having a different Si phase structure from the low-valence nanosilicon oxide included in a bulk part in the range deeper than 50 nm from the surface of the negative electrode active material particles is included in a surface layer part in the range up to a depth of 50 nm from the surface of the negative electrode active material particles. Thus, provided is a negative electrode active material making it possible to increase the capacity while maintaining battery characteristics.
Resumen de: WO2026223005A1
A battery manufacturing method, specifically comprising the following steps: preparing a positive electrode slurry and a negative electrode slurry; coating the prepared positive electrode slurry on the surface of a current collector, and drying same to obtain a positive electrode sheet; coating the prepared negative electrode slurry on the surface of a current collector, and drying same to obtain a negative electrode sheet; rolling and cutting the obtained positive electrode sheet and negative electrode sheet, and then assembling same into a pouch-type dry cell; and carrying out baking, electrolyte injection and wetting, formation, aging, and capacity grading on the pouch-type dry cell to obtain a finished battery. During preparation of the positive electrode slurry and the negative electrode slurry, a pore-forming agent which is one of components of an electrolyte is added to the positive electrode slurry or/and the negative electrode slurry, and during wetting, the pore-forming agent is dissolved in the electrolyte, thereby causing pores to form in the positive electrode sheet or/and the negative electrode sheet during dissolution.
Resumen de: US20260341773A1
A cell winding needle apparatus and a cell winding device. The cell winding needle apparatus includes: a mounting base; an assembly housing provided with a first end fixedly mounted to the mounting base and a second end that is a free end; at least one set of transmission assembly mounted to the assembly housing and including a plurality of transmission members arranged around an axis of the assembly housing; and a plurality of adsorption housings connected to the respective transmission members in a one-to-one correspondence and combined to form a cylindrical structure. The transmission members drive the adsorption housings to move in a direction perpendicular to the axis of the assembly housing, so as to increase or reduce an outer diameter of the cylindrical structure.
Resumen de: WO2026223478A1
A thermal management device (1), and a thermal management system (200) for a vehicle. The thermal management device (1) comprises: a body (4) having a first inlet (5) and a second inlet (9) for receiving fluid and a first outlet (8) and a second outlet (6) for outputting fluid; a first fluid passage (21) formed in the body (4) and connecting the first inlet (5) and the first outlet (8), wherein a fluid flow rate in the first fluid passage (21) is adjustable; and a second fluid passage (22) formed in the body (4), connecting the second inlet (9) and the second outlet (6), and having a throttling portion, wherein the fluid flow rate in the first fluid passage (21) is adjusted independently of that in the second fluid passage (22), and the flow cross-sectional area in the throttling portion is smaller than that in the second fluid passage (22).
Resumen de: WO2026223590A1
A modified natural graphite, a negative electrode sheet, a battery, a battery pack, and an electric device. The modified natural graphite satisfies K. K is 11 to 90. K = (C101 + C002) × QP × ρ, wherein C101 and C002 are crystallographic parameters of the modified natural graphite and are respectively calculated from the wavelength of cathode rays used for X-ray diffraction, the full widths at half maximum of carbon (101) and (002) peaks, and half of 2θ values corresponding to the carbon (101) and (002) peaks; QP is the pore density of the modified natural graphite, in units of mL/g; and ρ is the true density of the modified natural graphite, in units of g/cm3.
Resumen de: US20260341809A1
A battery management system includes a battery pack, and a battery management chip including a main circuit, a first pin, at least one second pin and a third pin. Whether a lowest voltage terminal of the battery pack is connected to the third pin is determined based on the voltage or substrate current of the at least one second pin. When the lowest voltage terminal of the battery pack is not connected to the third pin, the main circuit is controlled to turn off. When the lowest voltage terminal of the battery pack is connected to the third pin, the main circuit is controlled to turn on. This ensures that the main circuit starts to operate after the lowest voltage terminal of the battery pack is connected to third pin of the battery management chip, avoiding causing abnormal output or damage to the chip.
Resumen de: WO2026222712A1
A smoke alarm, comprising a panel (1), an upper cover (2), and a lower housing (3) arranged sequentially from top to bottom, as well as a control board assembly (7) and a smoke chamber (6) installed between the lower housing (3) and the upper cover (2). The panel (1) is movably mounted above the upper cover (2) in a vertically adjustable manner and is provided with a button post (8).The button post (8) extends downward through a hole in the upper cover(2) to a position above a button. When the panel (1) is pressed downward, the button post (8) depresses the button to activate the smoke alarm device.
Resumen de: WO2026223034A1
The present application relates to the technical field of batteries, and discloses a battery pack design method. In the battery pack design method of the present application, lithium iron phosphate is used as a positive electrode material of battery cells. If c/d≤2.8 Ah/mm and l/d≤6.4, this indicates that the risk of thermal runaway of the battery cells is low, and even if thermal runaway occurs to a battery cell, it is not likely to affect battery cells adjacent to the battery cell. Therefore, no thermal insulation pad is provided between any two battery cells, thereby improving the space utilization rate of the battery pack and reducing costs. If c/d>2.8 Ah/mm or l/d>6.4, this indicates that the risk of thermal runaway of the battery cells increases, and a thermal insulation pad is provided between at least two battery cells to improve the thermal insulation performance between the battery cells, thereby ensuring the safety of the battery pack.
Resumen de: WO2026225860A1
A battery cell according to the present invention comprises: an electrode assembly wound around a central axis in a state in which a separator is interposed between a plurality of electrodes; a cell housing having an open end portion and a closed end portion facing each other along an axial direction parallel to the central axis, wherein the open end portion defines an open portion communicating with the inner space of the cell housing, and the electrode assembly is accommodated in the inner space; and a can lead coupled to the open end portion of the cell housing so as to cover the open portion, and provided with a plurality of electrode coupling portions electrically connected to one of the electrodes of the electrode assembly, wherein the ratio of the total area occupied by the plurality of electrode coupling portions against the total area of the can lead is 25% to 50%.
Resumen de: WO2026226292A1
A thermal management system for a vehicle includes a radiator and a chiller. The thermal management system may include multiple configurations to provide cooling to components of the vehicle. In a first configuration, the components may be cooled via a radiator. In a second configuration, some of the components may be cooled via the radiator while other components may be cooled via a chiller. In a third configuration, the components may be cooled via the chiller. The configuration of the thermal management system may be based on the temperature of the components.
Resumen de: US20260341943A1
Disclosed is an electrical power storage system comprising an electrical power source enclosure and a suppressant collector. The enclosure is arranged to seal an electrical power source therein and comprises a first venting aperture arranged to allow venting of gas generated by the electrical power source when undergoing an over-heating event to outside of the enclosure. The first venting aperture is provided through an enclosure side wall of the enclosure. The suppressant collector is arranged outside of the enclosure and to collect a part of a volume of liquid suppressant when released into the enclosure, the part of the volume of suppressant leaving the enclosure via the first venting aperture. The suppressant collector comprises an exit aperture providing an exit from the suppressant collector, where the exit aperture is at a higher level than the first venting aperture.
Nº publicación: WO2026224964A1 29/10/2026
Solicitante:
SHIN ETSU CHEMICAL CO LTD [JP]
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Resumen de: WO2026224964A1
The present invention is a negative electrode active material having negative electrode active material particles, the negative electrode active material being characterized in that: the negative electrode active material particles include a porous carbon structure that is a base material; the porous carbon structure has an Si-C bond therein; an amorphous low-valence nanosilicon oxide is dispersed in a surface layer part; and a tetravalent silicon oxide capable of occluding and desorbing Li is included in at least part of the low-valence nanosilicon oxide. There is accordingly provided a negative electrode active material in which the generation of ionic substances is reduced and excessive decomposition of an electrolyte solution is suppressed, resulting in making it possible to improve battery cycle characteristics.
BOPI
Sede Electrónica
