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593
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Última actualización
26/08/2026 [07:22:00]
Resultados 175 a 200 de 593
Resumen de: WO2026173365A1
Disclosed are a negative electrode for a secondary lithium battery and a secondary lithium battery, the negative electrode comprising first and second negative active material layers sequentially positioned, wherein: the first negative active material layer comprises silicon-based negative active material; the silicon-based negative active material comprises silicon nanoparticles and an amorphous carbon layer positioned on the surface thereof; the silicon-based negative active material comprises pores and has sphericity (S) based on formula 1 of 0.8-1.0; and the pores include mesopores, the proportion of mesopore volume to total pore volume of the silicon-based negative active material being 30-70%.
Resumen de: DE102025106278A1
Verfahren zur Pflege einer elektrischen Energiespeichervorrichtung eines Niedervoltnetzes eines Kraftfahrzeugs, wobei das Kraftfahrzeug ein von dem Niedervoltnetz verschiedenes zweites Niedervoltnetz mit einer von der Energiespeichervorrichtung verschiedenen zweiten Energiespeichervorrichtung aufweist und die zweite Energiespeichervorrichtung als Antriebsbatterie für einen elektrischen Antrieb zur Unterstützung eines Verbrennungsmotors ausgebildet ist; wobei das Verfahren aufweist: Erfassen einer Nutzereingabe zur Pflege der Energiespeichervorrichtung; Bestimmen, anhand der Nutzereingabe, eines Pflegeprotokolls zum Pflegen der Energiespeichervorrichtung, wobei gemäß dem Pflegeprotokoll elektrische Energie von der zweiten Energiespeichervorrichtung in die Energiespeichervorrichtung verbracht wird; und Ausgeben eines Kontrollsignals zum Auslösen der Pflege gemäß dem Pflegeprotokolls.
Resumen de: WO2026173353A1
The present invention relates to a positive electrode active material, a method for preparing same, and a positive electrode and a lithium secondary battery each comprising same, wherein the positive electrode active material comprises secondary particles in which a plurality of primary particles are aggregated, the average circumferential length (um) of the plurality of primary particles as observed from an SEM image taken at a magnification of 2500 times being 4.0 um to 4.5 um.
Resumen de: US20260245858A1
A roll-to-roll system for manufacturing electrodes for a battery cell includes an idle roller and T tension rings arranged around an outer surface of the idle roller. The T tension rings are spaced from one another in an axial direction. The T tension rings are arranged at least one of between active material layers arranged on a current collector and at outer edges of the current collector radially outside of the active material layers. An inflatable sleeve is arranged around the idle roller and the T tension rings. The inflatable sleeve is made of a material selected from a group consisting of rubber, polyurethane, elastic polymer, and combinations thereof. First and second end supports are arranged in opposite axial ends of the idle roller. First and second shafts extend from the first and second end supports. A valve is arranged between the pressurized gas source and the inflatable sleeve.
Resumen de: WO2026173518A1
A method (100) of operating a battery testing assembly (1) for initiating a thermal runaway in a battery arrangement (2) comprising at least one battery cell (3) is disclosed. The method (100) is performed by a control arrangement (8). The battery testing assembly (1) comprises a current generating device (6) configured to generate a varying current. The current generating device (6) is electrically connected to the at least one battery cell (3). The method (100) comprises controlling (104) the current generating device (6) to generate a varying current having a first frequency (f) to heat the at least one battery cell (3) to a temperature which initiates thermal runaway. The present disclosure further relates to computer program, a computer-readable medium, a control arrangement (8), and battery testing assembly (1).
Resumen de: WO2026170599A1
A composite separator and a preparation method therefor, and a battery. The composite separator comprises a substrate layer and a modified polymer, wherein the substrate layer has a porous structure, and the modified polymer is located within the porous structure. The composite separator has a first endothermic peak and a second endothermic peak under DSC testing, wherein the first endothermic peak is located at 110-160°C, and the second endothermic peak is located at 168-295°C. In the composite separator, the modified polymer is located within the porous structure, and the difference between the thickness t2 of the composite separator and the thickness t1 of the substrate layer is 0. The composite separator has the first endothermic peak and the second endothermic peak under DSC testing, which is beneficial for increasing the rupture temperature of the composite separator and lowering the pore-closing temperature thereof, improves the heat resistance, prevents powder shedding, and provides good structural stability, such that the energy density of a battery cell can be increased.
Resumen de: WO2026170892A1
Provided in the present application are a battery cell, a manufacturing method therefor, a battery and an electrical apparatus. The battery cell comprises a positive electrode sheet; the positive electrode sheet comprises a positive electrode film layer; the positive electrode film layer comprises lithium iron sulfate fluoride. The chemical formula of lithium iron sulfate fluoride satisfies: Li1+aFexMySO4F, -0.05≤a≤0.1, x≥0.95, y>0, and x+y=1; an X-ray diffraction pattern of lithium iron sulfate fluoride exhibits a diffraction peak C at 29.5°-30.5°, and exhibits a diffraction peak D at 31.5°-32.5°; the integral areas of the diffraction peaks C and D are SC and SD; the integral area of a diffraction peak of lithium iron sulfate fluoride at 20°-40° is S, wherein: (SC+SD)/S≥0.3, SC/S≥0.15, and SD/S≥0.15. The technical solution of the present application can improve the conductivity and stability of battery cells, so that both the rate performance and the cycle performance of the battery cells are taken into account.
Resumen de: WO2026170834A1
The present application discloses a secondary battery and an electric device. The secondary battery comprises an electrode assembly and a pouch for accommodating the electrode assembly. The pouch comprises a pouch body and side seal flaps, and the electrode assembly is disposed in the pouch body. The pouch body comprises side walls, and in the extension direction of the side seal flaps, each side seal flap is connected to the corresponding side wall and fixed to the side of the side wall away from the accommodating cavity. Each side seal flap comprises a sealed region and an unsealed region. Each unsealed region is in communication with the accommodating cavity. When the electrode assembly expands, at least a part of each side seal flap can be expanded outward, thereby improving the stress distribution at a first end of each side seal flap and improving the capability of the pouch to withstand expansion of the electrode assembly. Each sealed region is connected to the corresponding unsealed region, and the sealed regions can also reduce the possibility of excessive outward expansion of the side seal flaps while sealing the accommodating cavity. In this way, after the expansion of the electrode assembly, the integrity of the pouch is maintained, thereby facilitating improvement in the safety performance of the secondary battery.
Resumen de: WO2026171223A1
The present application relates to the technical field of batteries. Disclosed are a battery and a battery pack. The battery comprises: an electrode assembly, wherein the electrode assembly is provided with a negative tab, a welding region adapted to weld to a busbar is provided on the negative tab, embossments arranged in rows are provided at intervals on the welding region, and a projection area S 1 of a single embossment in the direction of thickness of the negative tab satisfies 0.1 mm 2≤S 1≤4 mm 2. In the present application, the embossments are arranged in rows in the welding region of the negative tab, and the projection area of the single embossment in the direction of thickness of the negative tab is defined, such that laser light can be scattered by means of textures of the embossments, and an incident angle of the laser light is changed, thereby making part of the light deviate from a direct reflection path, reducing the direct reflection of the light, reducing the light reflection effect, improving the welding quality and ensuring the production quality of the battery.
Resumen de: US20260246109A1
0000 A battery cell comprises a casing, a first electrode terminal, an electrode assembly, a first insulating member and a second insulating member. The casing comprises a first wall, and the first electrode terminal is insulated from and arranged on the first wall; the electrode assembly is arranged in the casing, the electrode assembly comprising a main body part and a first tab; the main body part is flat, and the main body part is provided with a first end surface facing the first wall; the first tab is arranged on the first end surface, and the first tab is electrically connected to the first electrode terminal; the first insulating member and the second insulating member are arranged in the casing, and in the thickness direction of the main body part, the first tab is located between the first insulating member and the second insulating member.
Resumen de: WO2026170760A1
Provided in the present application are a battery cell, a battery apparatus and an electrical apparatus. The battery cell comprises a casing and an electrode assembly. The electrode assembly comprises electrode sheets, a solid electrolyte and a first insulating part. The electrode sheets comprise a first electrode sheet and a second electrode sheet; the first electrode sheet comprises a first main electrode sheet body and a first tab, the first tab being connected to the side of the first main electrode sheet body in a first direction; the second electrode sheet comprises a second main electrode sheet body and a second tab, the second tab being connected to the side of the second main electrode sheet body in the first direction. The first insulating part comprises a first insulator and a second insulator; the first insulator is formed on the surface of the first tab in a thickness direction of the electrode sheets and is arranged at the end of the second main electrode sheet body close to the first tab in the first direction; the second insulator is formed on the surface of the second tab in the thickness direction of the electrode sheets and is arranged at the end of the first main electrode sheet body close to the second tab in the first direction.
Resumen de: WO2026170954A1
A lithium-ion secondary battery and an electrical device. The lithium-ion secondary battery comprises a positive electrode sheet, a negative electrode sheet and an electrolyte. A positive electrode active layer in the positive electrode sheet comprises a ternary material, the ternary material comprising a ternary metal element, and the ternary metal element comprising nickel; the molar percentage of nickel is 50%-70% based on the total molar amount of the ternary metal element. The electrolyte comprises a lithium salt, a first additive and a solvent, the first additive comprising 1,3-propene sultone, and the solvent comprising ethylene carbonate at a mass percentage of 5%-25%. The lithium-ion secondary battery has a high cycle capacity retention rate.
Resumen de: US20260246020A1
0000 A battery pack according to an embodiment of the present disclosure comprises: a battery module including a battery cell stack in which a plurality of battery cells are stacked and a module frame in which the battery cell stack is housed; and a pack frame in which the battery module is housed, wherein a cooling path configured to receive a coolant is at a bottom part of the pack frame, and an opening at the bottom part of the pack frame is configured to allow a downside part of the module frame and the coolant to directly contact each other, and at least one protrusion part is on an outer surface of the downside part of the module frame.
Resumen de: US20260245891A1
0000 A main object of the present disclosure is to provide a cathode active material with excellent storage capacity durability. The present disclosure achieves the object by providing a cathode active material including: a crystalline primary particle containing Li, TM, which is a transition metal, and O, wherein the cathode active material is a single crystalline active material configured by the primary particle; the cathode active material includes a compound A containing La, Ni, and O, and a compound B containing Li, W, and O, on a surface of the primary particle; and La and W are present inside the primary particle.
Resumen de: US20260245881A1
Provided is a composite cathode active material configured to decrease the rate of resistance increase that is due to battery charge and discharge, the composite cathode active material comprising a cathode active material, a compound A comprising La, Ni and O, and a compound B comprising Li, W and O, wherein the cathode active material is a crystalline primary particle comprising Li, a transition metal and O; wherein the cathode active material is a single-crystal type active material comprising the primary particle; wherein the compound B is present in a coating layer form on at least part of a surface of the primary particle; and wherein the compound A is independently present as isolated particles.
Resumen de: US20260242241A1
0000 A main object of the present disclosure is to provide a cathode active material with which the increase in resistance in storage is reduced. The present disclosure achieves the object by providing a cathode active material including: a crystalline primary particle containing Li, TM, which is a transition metal, and O, wherein the cathode active material is a single crystalline active material configured by the primary particle; and the cathode active material includes a compound A containing La, Ni, and O, a compound B containing Li, W, and O, and a compound C containing Li, B, P, and O, on a surface of the primary particle.
Resumen de: WO2026171219A1
The present application relates to the technical field of batteries, and discloses a battery cell and a battery pack. The battery cell comprises: an electrode assembly, wherein end portions of the electrode assembly are provided with tabs; and a packaging film wrapping around the outer side of the electrode assembly and forming a packaging edge around the electrode assembly, wherein the packaging edge has end packaging areas and side packaging areas, the end packaging areas are respectively connected to the tabs, the end of each tab away from the electrode assembly extends out of the corresponding end packaging area, and in the width direction of the battery cell, the distance between the position where each end packaging area is connected to the corresponding tab and the adjacent side packaging area is L1, and L1 falls within the range of 1 mm≤L1≤400 mm. In the present application, the distance L1 between the connection position of each tab and the adjacent side packaging area is rationally set, thereby not only ensuring the sealing performance and yield of battery cells, but also reducing the waste of materials and the production cost.
Resumen de: WO2026170955A1
The present application provides a lithium-ion secondary battery, an electrolyte, a battery cell, and an electric device. The lithium-ion secondary battery comprises an electrolyte; the electrolyte comprises a lithium salt, a first additive, and an organic solvent; the lithium salt comprises lithium hexafluorophosphate; the first additive comprises 1,3-propane sultone; the organic solvent comprises a first solvent; and the relative dielectric constant of the first solvent is greater than or equal to 30. The lithium-ion secondary battery has a relatively high cycle capacity retention rate.
Resumen de: WO2026170897A1
The present application relates to a battery cell, a battery device and an electric apparatus. The battery cell comprises an electrode assembly (120). The electrode assembly (120) comprises a plurality of electrode sheets (121) and a separator (122). The plurality of electrode sheets (121) are stacked in a first direction (F1). Each electrode sheet (121) comprises a main body portion (1211) and a tab (1212) arranged on one side of the main body portion (1211), wherein the main body portion (1211) has a central region (z1) and an edge region (z2) arranged around the central region (z1). The separator (122) comprises a plurality of first portions (1221), and a second portion (1222) other than the first portions (1221). The first portions (1221) are configured to be permeable to ions, and the second portion (1222) is configured to block ions. The first portions (1221) are provided on the two sides of the main body portions (1211) that are located in the first direction (F1), the second portion (1222) covers at least part of the edge regions (z2) of the main body portions (1211), and the tabs (1212) extend out of the separator (122).
Resumen de: US20260245894A1
A negative electrode includes a current collector and an active material layer, wherein the active material layer includes carbon material particles and metal sulfide particles, wherein the metal sulfide includes at least one selected from the group consisting of Ag2S, MnS, and GeS, and a lithium-ion secondary battery comprising the negative electrode are described.
Resumen de: US20260245887A1
0000 A cathode material satisfying at least one of 1.58≥del_PD_absolute≥1, 0.3≥del_PD≥0.2, 0.21≥del_inclination≥0.15, or (1−del_PD)/EMD≥10.1. 0000 In the above equations, del_PD_absolute is an absolute value difference between an ideal value and a measured value of rolling density when a load is 9,000 kgf, del_PD is a normalized value difference between an ideal value and a measured value of rolling density when a load is 9,000 kgf, del_inclination is an inclination difference between an ideal value and a measured value of rolling density at a load of 0 to 9,000 kgf, and del_PD is a normalized value difference between an ideal value and a measured value of rolling density when a load is 9,000 kgf. The EMD (Earth Mover's Distance) is a value obtained using SciPy's Wasserstein_distance function (u_values=particle distribution before rolling, v_values=particle distribution after rolling, u_weights=none, v_weights=none).
Resumen de: US20260245890A1
0000 A main object of the present disclosure is to provide a cathode active material capable of reducing resistance and reducing increase rate of cycle resistance. The present disclosure achieves the object by providing a cathode active material including: a crystalline primary particle containing Li, TM, which is a transition metal, and O, wherein the cathode active material is an aggregate configured by a plurality of the primary particle; and there are a compound A containing La, Ni, and O, and a compound B containing Li, W, and O, on a surface of the primary particle.
Resumen de: WO2026171197A1
An explosion-proof housing body for a battery, a housing, and a battery. The outer surface of a bottom wall (10) of the explosion-proof housing body is provided with an explosion-proof groove (101); a plurality of radial grooves (2) of the explosion-proof groove (101) are arranged around the peripheral side of a central groove (1) and are in communication with the central groove (1), and each radial groove (2) extends from the central groove (1) towards the edge of the bottom wall (10); and the thickness Tx of the bottom wall (10) at the explosion-proof groove (101) has at least a continuously varying value range and/or a discontinuously varying value range.
Resumen de: AU2024443304A1
The present disclosure provides a negative electrode sheet, a secondary battery, an electric device, and a hard carbon material and a preparation method therefor. After the hard carbon material is sintered and heated for 2 h at 1000°C in an inert atmosphere, the surface oxygen content measured under a vacuum condition is set as X1, and the surface oxygen content measured after 30 days of exposure in air with a humidity less than or equal to 2% is set as X2, wherein X1 and X2 satisfy: X2-X1≤5 wt%.
Nº publicación: US20260246049A1 20/08/2026
Solicitante:
TOOLS AVIATION L L C [US]
TOOLS AVIATION LLC [US]
Tools Aviation, L.L.C.
Tools Aviation, LLC
Resumen de: US20260246049A1
A battery holding and dispensing device can hold a plurality of coin batteries. The battery holding and dispensing device includes a body having a plurality of compartments, or a single channel, sized and shaped to each receive a coin battery and the body having one or more magnetic inserts for releasably retaining the battery in the compartment. Alternately the body has a mechanical device to hold the coin batteries into the body at opposite ends.
BOPI
Sede Electrónica
