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1532
results.
Updated on
18/03/2026 [07:26:00]
Results 75 to 100 of 1532
Absstract of: WO2026051562A1
The present application relates to the technical field of batteries, and in particular to a battery cell and a battery pack. The battery cell comprises: a casing, in which an accommodating cavity is formed; and a cover plate, welded to the casing to seal the accommodating cavity, wherein after welding, a weld portion is formed between the cover plate and the casing; formula (I), wherein C is the perimeter of the cover plate and is expressed in mm, S is the area of the cover plate and is expressed in mm2, K is the shear strength of the cover plate and is expressed in Mpa, and B is the fusion depth of the weld portion and is expressed in mm. In the present invention, the perimeter C of the cover plate, the area S of the cover plate, the shear strength K of the cover plate, and the fusion depth B of the weld portion are defined to satisfy the condition C/S×B×K≥1.25, so that the welding strength between the casing and the cover plate can be ensured, and the weld portion is prevented from cracking, thereby ensuring the airtightness of the battery cell, and further ensuring the use safety of the battery cell.
Absstract of: WO2026054633A1
The present invention relates to a cleaner, comprising: a main body housing in which a suction motor that generates a suction airflow is accommodated; a battery including a battery cell that supplies power to the suction motor; and a handle disposed between the suction motor and the battery and configured to be gripped, wherein the handle has a cooling channel formed thereinside, through which at least a portion of air discharged from the suction motor flows, and the battery includes a ventilation opening in communication with the cooling channel, such that a portion of the air discharged from the suction motor can circulate air inside the battery.
Absstract of: WO2026054637A1
Disclosed is an all-solid-state battery using a non-carbon-based tungsten oxide cathode additive having high conductivity and high safety. The cathode additive according to an embodiment comprises a tungsten oxide having an oxygen vacancy, and the tungsten oxide can replace a carbon-based conductive material in a cathode composite compound for an all-solid-state battery.
Absstract of: WO2026054534A1
The present invention relates to a method for manufacturing a lithium secondary battery electrode, a lithium secondary battery electrode manufactured using same, and a lithium secondary battery comprising same, the method comprising the steps of: making one surface of an electrode active material layer come in contact with a transfer laminate in which a substrate layer and a lithium metal layer are in direct contact with each other, so that the electrode active material layer and the lithium metal layer face each other; and pressing, at a pressure of 6 kgf/cm2 or less, and aging the electrode active material layer in contact with the transfer laminate, wherein the transfer laminate is formed by making the lithium metal layer come in contact with one surface of the substrate layer and rolling same.
Absstract of: WO2026054485A1
A negative electrode for an all-solid-state battery according to the present invention comprises: a negative electrode current collector; and a negative electrode coating layer disposed on the negative electrode current collector, wherein the negative electrode coating layer comprises carbon material powder, the carbon material powder comprises a carbon material and first metal nanoparticles, the average particle diameter of the first metal nanoparticles is 1 μm or less, and the average particle diameter of the carbon material powder is 100 nm to 2 μm.
Absstract of: WO2026054454A1
The present invention relates to a separator for an electrochemical device and an electrochemical device comprising same. Specifically, the present invention relates to a separator for an electrochemical device and an electrochemical device comprising same, wherein the separator contains substituted polyacrylic acid in a coating layer and thus can improve resistance and cycle performance.
Absstract of: WO2026054354A1
The present invention relates to a separator for an electrochemical device, wherein an aerogel layer containing cellulose nanofibers is provided on a coating layer containing inorganic particles. The separator for an electrochemical device includes a cellulose nanofiber aerogel having high porosity and excellent mechanical strength compared to conventional coating layers made of inorganic materials, and has high mechanical strength, such as high puncture strength, and low resistance.
Absstract of: WO2026051698A1
The present application provides a thermal management system for dissipating heat from a battery pack, and an energy storage device. In the thermal management system, an output end of a compressor is in communication with a condenser and is connected to an evaporator, and is also directly connected to an input end of the evaporator by means of a bypass branch. The input end of the evaporator can selectively receive a low-temperature refrigerant from the condenser and a high-temperature gaseous refrigerant from the compressor, and the two are mixed in the evaporator, so that the low-temperature refrigerant is heated by the high-temperature gaseous refrigerant. Thus, in a low-temperature environment, the degree of superheat of a refrigerant flowing out of the evaporator can be effectively increased, preventing liquid refrigerant from being drawn into the condenser under low-temperature conditions, and eliminating the risk of drawing in air together with liquid in the condenser, thereby increasing the reliability of operation of the condenser in a low-temperature state.
Absstract of: WO2026051630A1
Provided in the present application is a battery, comprising a battery cell main body, a bottom adhesive layer and a head adhesive layer, wherein the battery cell main body comprises a top surface and a bottom surface, and a first side surface, a second side surface, a third side surface and a fourth side surface which are located between the top surface and the bottom surface and are successively connected end to end in a circumferential direction; the second side surface has a stepped surface, the stepped surface comprising a first side surface region, a vertical surface region and a second side surface region which are successively connected, and the second side surface region protruding outwards with respect to the first side surface region; the bottom adhesive layer is located at the bottom of the battery cell main body and is provided with a first notch at a position close to or corresponding to the vertical surface region; the head adhesive layer is located at the top of the battery cell main body and is provided with a second notch at a position close to or corresponding to the vertical surface region. By means of the stepped surface, the battery can be adapted to a battery compartment structure having a local protrusion, thereby helping to improve the space utilization rate of entire devices and improve the battery capacity.
Absstract of: WO2026051632A1
The present application relates to a secondary battery and an electronic device. Specifically, the present application provides a secondary battery, comprising a positive electrode, a negative electrode and an electrolyte, wherein the positive electrode comprises a positive electrode current collector, and an insulating layer and a positive electrode material layer which are provided on the positive electrode current collector, the insulating layer comprises boehmite, the positive electrode material layer comprises a nickel-cobalt-manganese ternary material, and the electrolyte comprises at least two dinitrile compounds. The present application can not only improve the short-circuit safety of the battery, but also reduce gas production at high temperature.
Absstract of: WO2026051631A1
The present application relates to a secondary battery and an electronic device. Specifically, the present application provides a secondary battery, comprising: a positive electrode, a negative electrode, and an electrolyte, wherein the positive electrode comprises a positive electrode current collector, and an insulating layer and a positive electrode material layer which are provided on the positive electrode current collector; the insulating layer comprises boehmite, the positive electrode material layer comprises a lithium cobalt oxide, the lithium cobalt oxide comprises element tungsten and element tin, and the electrolyte comprises vinylene carbonate. The present application can not only improve the short-circuit safety of batteries, but also enhance high-rate discharge characteristics.
Absstract of: WO2026054365A1
Provided is an electrode assembly according to exemplary embodiments of the present invention. The electrode assembly comprises, laminated in a first direction, positive and negative electrodes, a separator, and an insulation member, wherein the insulation member comprises one or more holes overlapping the electrode in the first direction. The electrode assembly allows ions to move through the one or more holes and may be in the form of a stack.
Absstract of: WO2026054362A1
The present invention relates to a solid electrolyte membrane and an all-solid-state battery comprising same, and more specifically, comprises: a first solid electrolyte having a particle form and having a first average particle diameter; and a second solid electrolyte having a fine particle form and having a long axis length of 1 μm or less, wherein the first average particle diameter is 2 μm to 10 μm, and the weight ratio of the second solid electrolyte to the total weight of the first and second solid electrolytes is 10 wt% to 30 wt%.
Absstract of: WO2026054317A1
A communication ID allocation system according to an embodiment of the present disclosure comprises a plurality of slave BMSs for storing a plurality of first certificates, respectively, and a master BMS including a certificate chain, wherein the master BMS includes a memory for storing the certificate chain, and a processor for: receiving a plurality of first certificates from the plurality of slave BMSs, respectively, by transmitting a certificate transmission request signal to the plurality of slave BMSs when communication connections to the plurality of slave BMSs are detected; verifying integrity of each of the plurality of first certificates by using the certificate chain; determining the validity of each of the plurality of slave BMSs on the basis of whether the integrity of each of the plurality of first certificates is secured; and allocating first communication IDs to valid slave BMSs among the plurality of slave BMSs.
Absstract of: WO2026054320A1
A battery system, according to one embodiment of the present invention, may comprise: an upper BMS; and a plurality of lower BMSs. Here, the upper BMS and the lower BMSs may be communicatively connected via a communication bus. In addition, each of the lower BMSs may be connected to a filter for reducing communication noise, and the upper BMS may be connected to a compensation circuit for compensating for attenuation of a communication signal caused by the filters.
Absstract of: WO2026054394A1
The present invention relates to a recycling method for recovering and recycling battery-grade lithium carbonate (Li2CO3) from waste lithium-ion batteries, and to a system applying same. Recycled lithium carbonate crystals of the present invention have a very high proportion of plate-shaped crystals while having high purity, and thus, battery-grade recycled lithium carbonate can be produced and provided with high economic efficiency.
Absstract of: WO2026051582A1
A battery apparatus (1000) and an electric apparatus (1). The battery apparatus (1000) comprises: a main box (100), wherein the main box (100) defines an accommodating cavity (101) with an open top, the main box (100) comprises a steel plate layer (110) and an aluminum plate layer (120) that are stacked in the thickness direction, and the aluminum plate layer (120) is arranged on the side of the steel plate layer (110) facing the accommodating cavity (101); and a battery cell (200), arranged in the accommodating cavity (101).
Absstract of: WO2026051493A1
The present application provides a battery apparatus (100) and an electric device. The battery apparatus (100) comprises: a case (2); a battery cell (10) arranged inside the case (2); and a low-voltage acquisition assembly (3) arranged inside the case (2), the low-voltage acquisition assembly (3) being used for acquiring operating state parameters of the battery cell (10), and the operating state parameters including voltage and temperature. The low-voltage acquisition assembly (3) comprises: a first sampling member (31), the first sampling member (31) being connected to the battery cell (10) so as to acquire the voltage of the battery cell (10); a second sampling member (32), one end of the second sampling member (32) being detachably connected to the first sampling member (31) so as to transmit the voltage; a third sampling member (33), the third sampling member (33) being detachably connected to the other end of the second sampling member (32) so as to transmit the voltage; and a fourth sampling member (34), the fourth sampling member (34) being connected to the second sampling member (32) so as to acquire the temperature of the battery cell (10).
Absstract of: WO2026051500A1
The present application discloses an electrochemical apparatus and an electrical device. The electrochemical apparatus comprises an electrode assembly and a first discharge controller, the electrode assembly comprising a plurality of negative electrode sheets. The plurality of negative electrode sheets comprise at least one first negative electrode sheet and at least one second negative electrode sheet. Each first negative electrode sheet comprises a first negative electrode active substance layer, and the mass percentage of the element silicon in the first negative electrode active substance layer is N1, where N1≥0. Each second negative electrode sheet comprises a second negative electrode active substance layer, and the mass percentage of the element silicon in the second negative electrode active substance layer is N2, where N2>N1. A second negative tab is electrically connected to the first discharge controller. The first discharge controller is preset to have a first cut-off voltage. The first discharge controller is configured to disconnect an electrical connection between the second negative tab and an external load when the discharge voltage of the electrode assembly is equal to or less than the first cut-off voltage. The electrochemical apparatus is beneficial for improving discharge capacity.
Absstract of: WO2026051506A1
Provided are a secondary battery and an electric device. By reasonably designing the composition of an electrolyte and a positive electrode material of a secondary battery, the secondary battery satisfies formula I, wherein N is the molar ratio of lithium salts LiPO2F2 and LiPF6 in the electrolyte, and N = 0.01-11; W1 is the weight ratio of cyclic carbonate to chain carbonate; W2 is the weight percentage of element A in a positive electrode active material; and C is the weight percentage of a sulfur-containing additive in the electrolyte. Keeping formula II within a suitable range can ensure excellent kinetic performance and low impedance in a lithium-ion battery, so that the migration of lithium ions in the battery maintains a good state, and the secondary battery can maintain good cycle performance at a high voltage.
Absstract of: WO2026054388A1
The present invention relates to an all-solid-state secondary battery and a method for manufacturing an all-solid-state secondary battery. The all-solid-state secondary battery comprises two or more types of unit cells, each unit cell including a positive electrode, a negative electrode, and a solid electrolyte. The positive electrode and the negative electrode included in one unit cell include one type of positive electrode active material and one type of negative electrode active material, respectively, and the two or more types of unit cells differ from one another in at least one of the positive electrode, the negative electrode, and the solid electrolyte.
Absstract of: WO2026054384A1
A separator for an electrochemical device of the present invention comprises: a porous polymer substrate; and a coating layer disposed on at least one surface of the porous polymer substrate and including inorganic particles, wherein the porous polymer substrate has a porosity of about 50-65 vol%, the porous polymer substrate includes a polymer having a melt index of about 0.0001-0.01 g/10 min, and the coating layer has a porosity of about 40-70 vol%.
Absstract of: WO2026054387A1
Provided is a cable-type secondary battery comprising: a separator having a corrugated tube structure; a first electrode extending in the separator having the tube structure; and a second electrode extending along the first electrode while surrounding the separator having the tube structure. The cable-type secondary battery of the present invention is simple to manufacture and has excellent formability into a desired form.
Absstract of: WO2026054374A1
A battery diagnosis device according to an embodiment disclosed in the present document may comprise: an interface for acquiring a voltage value measured for one or more battery cells during a designated time interval, and acquiring an external temperature of the battery cells; and a controller for calculating a difference between voltage values at two time points included in the designated time interval, selecting a discharge threshold value corresponding to the external temperature and a target time point among the two time points, and diagnosing a state of the battery cells by comparing the difference with the discharge threshold value.
Nº publicación: WO2026054376A1 12/03/2026
Applicant:
VALEO KAPEC CO LTD [KR]
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Absstract of: WO2026054376A1
Disclosed are a cartridge for mounting a battery cell, and an air cooling battery system assembly comprising same. The cartridge may comprise a frame and a flow rate restriction member. The frame may be provided with a flow path which extends with a first flow cross-sectional area. The flow rate restriction member may be disposed in the flow path. The flow rate restriction member can reduce the first flow cross-sectional area to a second flow cross-sectional area that is less than the first flow cross-sectional area.
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