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38
results.
Updated on
11/03/2026 [07:31:00]
Results 25 to 38 of 38
Absstract of: WO2026049600A1
The present invention relates to a positive electrode active material capable of implementing a battery with improved initial capacity characteristics and lifespan characteristics, and a positive electrode and a lithium secondary battery comprising same, wherein the positive electrode active material comprises a lithium nickel-based oxide and has an average KAM value (total sum of KAM values of all pixels/total number of pixels) of 0° (exclusive) to 1.0° (inclusive), obtained from a kernel average misorientation map (KAM Map) derived from electron backscatter diffraction (EBSD) analysis.
Absstract of: WO2026049572A1
A solid electrolyte-electrode assembly, as well as an all-solid-state battery including the assembly are described. For instance, a solid electrolyte-cathode assembly can be formed by co-rolling a plurality of cathode particles and a plurality of solid electrolyte particles, which results in the simultaneous production of the assembly and makes it possible to achieve improved interface resistance between the electrolyte membrane and electrode to improve battery performance. Also, the resulting electrolyte can be thin, which improves the energy density, while also maintaining excellent strength by using an electrode as a support.
Absstract of: WO2026049567A1
The present invention provides a positive electrode active material comprising at least one of a single particle consisting of one nodule and a quasi-single particle which is a composite of 30 or fewer nodules, wherein the degree of single crystallization defined by formula (A) is 2.7 or more. Formula (A): Degree of single crystallization = Formula I In formula (A), Ri is a radius of an i-th grain measured when a cross-section of an electrode is subjected to electron backscatter diffraction (EBSD) analysis after ion milling treatment of the electrode manufactured by applying the positive electrode active material, and is a value measured in units of ㎛, but the value substituted into formula (A) is a unitless number that does not include a unit, and n is a total number of grains measured through the electron backscatter diffraction (EBSD) analysis.
Absstract of: WO2026049568A1
The present invention relates to a cathode active material comprising: 80 mol% or more of nickel among all metals excluding lithium; and at least one type of doping elements, wherein the at least one type of doping elements has an average value of a first doping uniformity index as defined by equation 1, measured for individual doping elements, of 16% or less, and a particle strength of 121 MPa or more. Equation 1First doping uniformity index=NSD/Navg wherein, in equation 1, NSD is a standard deviation value of a molar ratio of the individual doping elements to Mn in the entire cathode active material, and Navg is an average value of a molar ratio of the individual doping elements to Mn in the entire cathode active material.
Absstract of: WO2026045924A1
Embodiments of the present disclosure provide a heat exchange assembly, a battery device, an energy storage device, and an electrical device. The battery device comprises a housing, a battery cell assembly, and a heat exchange assembly. The battery cell assembly is arranged in the housing. The heat exchange assembly comprises at least two heat exchange members. At least one heat exchange member is configured as a flexible member. The at least two heat exchange members are stacked, and at least one medium flow channel is formed between the heat exchange members. The at least one medium flow channel is used to conduct a heat exchange medium. The heat exchange medium is used to perform heat exchange with the battery cell assembly. The heat exchange assembly of the battery device provided in the embodiments of the present disclosure comprises a flexible member. The mass of the flexible member is relatively light, thereby reducing the mass of the heat exchange assembly and reducing the production cost of the heat exchange assembly. In addition, this configuration enables the heat exchange assembly to be better fitted to the housing and/or the battery cell assembly, thereby improving the heat exchange efficiency and heat exchange performance of the heat exchange assembly.
Absstract of: WO2026045770A1
An electrochemical device and an electronic device. The electrochemical device comprises a negative electrode sheet and an electrolyte; the negative electrode sheet comprises a negative electrode material layer, the negative electrode material layer comprises a silicon-carbon negative electrode material, the silicon-carbon negative electrode material comprises a doped element, and the doped element includes at least one of B, P, or S; the electrolyte comprises a compound of formula I and fluoroethylene carbonate. The electrolyte simultaneously comprising the compound of formula (I) and fluoroethylene carbonate is applied to the electrochemical device, thereby improving the cycle performance and energy density of the electrochemical device.
Absstract of: WO2026045740A1
The present invention relates to the technical field of new energy vehicles. Disclosed are a temperature control system, method and device for a battery pack, a storage medium, and a vehicle. The temperature control system comprises a temperature control component, and the battery pack comprises two battery modules. When an abnormal temperature fault occurs in one of the battery modules, power is supplied by means of the other battery module, and the battery pack is cooled by means of the temperature control component.
Absstract of: WO2026045756A1
The present invention relates to the technical field of battery materials. Disclosed are a composite sodium iron phosphate material and a precursor thereof, and a preparation method. The chemical formula of the composite sodium iron phosphate material is Na4Fex(PO4)2(P2O7)/C, wherein 2.92≤x≤3; the degree of crystallinity of the composite sodium iron phosphate material is C0≥3.895. The precursor is prepared by means of a specific iron source (ammonium ferrous phosphate, ferric oxalate, or ferric citrate). During the preparation of the precursor, no carbon source is added. During the preparation of the composite sodium iron phosphate material from the precursor, a carbon source and a sodium source are added and the mixture is sintered to obtain the composite sodium iron phosphate material having high compaction density. In addition, the composite sodium iron phosphate material has good electrochemical performance. The present invention further claims a battery comprising the composite sodium iron phosphate material.
Absstract of: WO2026049173A1
The present invention relates to a method for producing a biomass-based eutectic solvent exhibiting an excellent extraction effect on metal components from waste batteries, a eutectic solvent produced thereby, and a method for recovering resources from waste batteries using same.
Absstract of: WO2026049134A1
The present invention relates to an all-solid-state battery and a method for manufacturing same and, more specifically, to an all-solid-state battery comprising: an electrode assembly in which at least one unit cell is stacked; and a pouch for packaging the electrode assembly. The unit cell includes a positive electrode, a negative electrode, and a solid electrolyte between the positive electrode and the negative electrode, and the pouch includes an insulating layer and a metal layer on the insulating layer, the insulating layer containing a polymer resin and a heat absorbing material dispersed in the polymer resin, wherein the endothermic initiation temperature of the heat absorbing material is 170°C to 300°C.
Absstract of: WO2026049129A1
This washing composition for a solid electrolyte slurry comprises a compound represented by chemical formula 1 below:
Absstract of: WO2026049130A1
The present invention relates to a pouch-type all-solid-state battery comprising: an assembly comprising a positive electrode a solid electrolyte layer and a negative electrode; a first substrate tab protruding from the positive electrode; a second substrate tab protruding from the negative electrode; a first lead tab electrically connected to the first substrate tab; a second lead tab electrically connected to the second substrate tab; a bonding portion provided in the space between the first base tab and the first lead tab and/or the space between the second base tab and the second lead tab; and a pouch case accommodating the assembly. The first and second lead tabs are exposed to the outside of the pouch case, and the bonding portion includes a metal having a melting point lower than 250 °C.
Absstract of: WO2026049165A1
A battery assessment device, according to some embodiments, may comprise: a chamber which provides a space for assessing a battery; a sensor which detects whether a fire occurs in the battery; and a water supplier which, when the sensor detects a fire, sprays a coolant into the chamber so that the battery is immersed. Accordingly, some embodiments of the present invention enable completely extinguishing a fire within a short time while preventing damage to the chamber.
Absstract of: WO2026045489A1
An energy storage enclosure and an energy storage system. The energy storage enclosure comprises an enclosure body, a heat dissipation assembly, and a heat dissipation fan (200). The enclosure body is provided with an installation space (121), the installation space (121) being used for accommodating an electronic device (300) such as an energy storage module. The heat dissipation assembly is disposed on the enclosure body and has a heat dissipation space independent of the installation space (121), the heat dissipation space being used for exchanging heat with the installation space (121). The heat dissipation fan (200) is disposed on the heat dissipation assembly and is used for blowing air into the heat dissipation space, so as to achieve heat exchange between the heat dissipation space and the outside environment. Upon activation of the heat dissipation fan (200), a heat dissipation airflow blown out by the heat dissipation fan (200) enters the heat dissipation space and exchanges heat with the heat dissipation assembly. The heat dissipation assembly performs heat exchange by means of connection with the enclosure body, and the enclosure body then performs heat exchange with the electronic device (300) in the installation space (121), thereby ensuring the operating temperature of the electronic device in the installation space (121).
Absstract of: WO2026045450A1
A door body, a folding door, a container and an energy storage system. The door body comprises a first door panel and a second door panel, wherein the first door panel is adapted to be rotationally connected to a first beam; the second door panel is rotationally connected to the end of the first door panel away from the first beam; in a first state, a first included angle is formed between the first door panel and the second door panel, and both the first door panel and the second door panel are adapted to be connected to a door frame and close the door frame; in a second state, a second included angle is formed between the first door panel and the second door panel, the second door panel is spaced apart from the door frame, and the first included angle is greater than the second included angle; and during switching from the first state to the second state, the end of the second door panel close to the first door panel moves in a direction away from the door frame, and the end of the second door panel away from the first door panel moves toward the first beam. By means of applying the door body to a container, the space utilization rate of the container is improved.
Absstract of: WO2026045484A1
An end plate installation apparatus and a battery production device. The end plate installation apparatus is used to sleeve an end plate onto a positive terminal of a battery cell. The positive terminal of the battery cell is provided with a tab. The tab has a first end portion and a second end portion. The first end portion is connected to the positive terminal, and the second end portion is an end away from the positive terminal. The end plate installation apparatus comprises: a fixture, an end plate clamping assembly, a first tab holding assembly, and a second tab holding assembly. The fixture is used to support and fix the battery cell. The end plate clamping assembly is used to clamp the end plate and drive the end plate to move. The first tab holding assembly has a holding state and an avoidance state. When in the holding state, the first tab holding assembly contacts a middle portion of the tab to prevent the tab from sagging, and when in the avoidance state, the first tab holding assembly avoids a sleeving path of the end plate. The second tab holding assembly is configured such that, when the first tab holding assembly is in the avoidance state and the second end portion of the tab passes through the end plate, the second tab holding assembly contacts the second end portion of the tab to prevent the tab from sagging.
Absstract of: WO2026049116A1
The present invention relates to a fire suppression system for an electric vehicle, the system being characterized by comprising: a battery pack (100) disposed and installed on the bottom of a vehicle body of an electric vehicle (10); a pack case (200) installed to surround the outside of the battery pack (100) so that a passage (210) is provided at a predetermined distance from the surface, bottom surface, and four edge surfaces of the battery pack (100); a fire extinguishing agent supply pipe (220) installed on the outer surface of one side of the pack case (200) so that one end is connected to the passage (210); and an automatic fire extinguishing spray device (300) which includes a tank filled on the inside with a fire extinguishing agent for fire suppression, such as a fire extinguishing liquid or a fire extinguishing gas, and is installed on one side of the outside of the pack case (200) by being connected to the other end of the fire extinguishing agent supply pipe (220) to inject the fire extinguishing agent filled therein into the passage (210) between the pack case (200) and the battery pack (100) by means of an opening and closing valve, operated in conjunction with a fire alarm system, when a fire occurs. The system rapidly extinguishes thermal runaway of the battery pack (100) in an early stage when a fire occurs.
Absstract of: WO2026049212A1
Provided is a solid secondary battery in which performance degradation due to charging and discharging is suppressed without the application of external pressure, or under low confining pressure. The solid electrolyte layer has an assumed shear strength of 15-70 MPa.
Absstract of: WO2026049243A1
The present invention provides a development view of a separator stacked together with a first electrode and a second electrode, and a structure of an electrode assembly including the separator. According to the present invention, a first region and a second region, which are alternately repeated and connected in series, are defined in the development view of the separator, and the separator is folded so that the first region and the second region alternately and repeatedly overlap each other in a thickness direction.
Absstract of: WO2026049230A1
The present invention relates to a battery cell aging device comprising: a main body having a hollow in which a battery cell is accommodated; a heater positioned on the inner surface or in the interior of the main body to control the temperature of the battery cell; and a sensor being in contact with a part of the battery cell to measure the temperature thereof.
Absstract of: WO2026049196A1
The present invention relates to a negative electrode for a lithium metal battery and a lithium metal battery including same. More specifically, the negative electrode for a lithium metal battery according to the concept of the present invention includes: a negative electrode current collector; and a negative electrode host layer on the negative electrode current collector, wherein the negative electrode host layer includes a carbon material and a coating layer on the surface of the carbon material. The coating layer includes a lithiophilic material. The negative electrode host layer has a structure including a plurality of pores.
Absstract of: WO2026049236A1
Disclosed is an all-solid-state secondary battery comprising a positive electrode layer, a negative electrode layer, and a solid electrolyte layer between the positive electrode layer and the negative electrode layer. The negative electrode layer comprises amorphous carbon and any one material selected from the group consisting of gold, platinum, palladium, silicon, silver, aluminum, bismuth, tin, and zinc. The solid electrolyte layer comprises a first solid electrolyte, a second solid electrolyte, and a binder. The first solid electrolyte is a lithium-containing sulfide solid electrolyte, the second solid electrolyte is a molecular crystal, and the molecular crystal comprises: a lithium salt including at least one selected from the group consisting of lithium bis(fluorosulfonyl)imide (LiFSI), and lithium bis(trifluoromethanesulfonyl)imide (LiTFSI); and a ligand including at least one selected from the group consisting of tetramethylethylenediamine (TMEDA), tetraethylethylenediamine (TEEDA), and tetramethylpropylenediamine (TMPDA).
Absstract of: EP4704233A2
An industrial battery design including a sealed enclosure that can be used in material handling vehicle applications. The enclosure for the industrial battery (200, 300, 400, 500, 600, 700) includes a first piece of bent sheet metal (111) and a second piece of bent sheet metal (112) that is bolted to the first piece of bent sheet metal (111). The enclosure further includes a metal base plate (160) and a lid assembly (120) that includes a gasket (124).
Absstract of: EP4704191A1
An industrial battery design for use in a material handling vehicle (100). The battery includes a battery cell (232, 234, 236, 242, 244, 246), a heater (238, 248) to provide heat to the battery cell (232, 234, 236, 242, 244, 246), a temperature sensor (239, 249) to monitor a temperature of the battery cell (232, 234, 236, 242, 244, 246), a first switching device (202) through which power for the heater (238, 248) is routed, a second switching (204) device through which power for the heater (238, 248) is not routed, and a controller (222). The controller (222) includes circuitry configured to receive temperature data indicative of the temperature of the battery cell (232, 234, 236, 242, 244, 246) from the temperature sensor (239, 249) and to open the first switching device without opening the second switching device based on the temperature data received from the temperature sensor.
Nº publicación: EP4704214A1 04/03/2026
Applicant:
SAMSUNG SDI CO LTD [KR]
SAMSUNG SDI CO., LTD
Absstract of: EP4704214A1
An insulation member includes an insulating material shaped into a volumetric shape, and interior space inside the volumetric shape, wherein the volumetric shape does not cover a protection circuit module on a case of a battery pack, the volumetric shape covering a polarity pin electrically connected to the battery pack and exposed to an outside of the case.
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