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1559
resultados
Última actualización
15/06/2025 [07:20:00]
Resultados 25 a 50 de 1559
Resumen de: WO2025118992A1
A use of an unsaturated phosphate-based lithium fluoroborate in an electrolyte and a preparation method therefor. The unsaturated phosphate-based lithium fluoroborate is added into the electrolyte at an additive amount of 0.01-15 wt% of the total mass of the electrolyte. The preparation method for the unsaturated phosphate-based lithium fluoroborate comprises the following steps: reacting an unsaturated phosphonic acid with inorganic lithium salts to obtain an unsaturated lithium phosphonate reaction solution; and introducing a boron trifluoride gas into the unsaturated lithium phosphonate reaction solution or adding a boron trifluoride complex for a reaction to obtain the unsaturated phosphate-based lithium fluoroborate. Applying the unsaturated phosphate-based lithium fluoroborate to the electrolyte has the advantages of reducing the initial impedance of batteries, decreasing gas generation during storage, improving the cycle performance and the like.
Resumen de: WO2025118796A1
Disclosed is a vehicle, comprising a battery cell or a starting battery for a fuel engine, the starting battery comprising the battery cell. Also disclosed is a manufacturing method for the battery cell. The battery cell comprises a positive electrode and a negative electrode. The positive electrode comprises lithium iron phosphate composite particles, the lithium iron phosphate composite particles comprising lithium iron phosphate particles of at least two D50 particle sizes. The negative electrode comprises graphite composite particles, the graphite composite particles comprising graphite particles of at least two D50 particle sizes.
Resumen de: WO2025119017A1
Disclosed in the present application are a battery cell, a battery and an electrical device. The battery cell comprises a casing and an exhaust component, the casing being provided with a wall part and an accommodation chamber, the exhaust component being arranged on the wall part, and the exhaust component being used for discharging gas in the casing. The battery cell further comprises an electrolyte, and the electrolyte is filled in the accommodation chamber. The conductivity of the electrolyte is 2 ms/cm≤conductivity≤16 ms/cm, and the exhaust rate of the exhaust component is 0.6 mL/day≤exhaust rate≤10.0 mL/day. By matching battery cells having electrolytes of different conductivities with exhaust components of different exhaust rates, the solution of the present application can balance the contradiction between high conductivity requirements and high gas production amounts, and reduces the impact of external water vapor intrusion on batteries in the exhaust process.
Resumen de: WO2025118830A1
Disclosed are a positive electrode active material and a preparation method therefor, a secondary battery, and a device. The positive electrode active material comprises a primary particle. The primary particle comprises: a core, which comprises LiaNibCocMndM1eOx; a first coating layer, which is applied on the surface of the core and is a continuous layer, wherein the first coating layer comprises a compound containing an element M2, and M2 comprises at least one of Co and Mn; and a second coating layer, which is applied on the surface of the first coating layer and is in the form of discrete islands, wherein the second coating layer comprises a compound containing an element M5, and M5 comprises at least one of Li, Na, Mg, Sr, Ba, Al, Y, B, Zr, Ti, Si, Sn, V, P, W and Mo; and the molar percentage content of Co and/or Mn in the first coating layer is greater than the molar percentage content of Co and/or Mn in the core. Thus, the positive electrode active material has excellent cycle performance and rate capability.
Resumen de: WO2025118441A1
Disclosed in the present application are a stacking device and method. The stacking device comprises a stacking table, and a first sheet-picking gripper mechanism and a second sheet-picking gripper mechanism, which are arranged on two sides of the stacking table, wherein the first sheet-picking gripper mechanism obliquely conveys a cut electrode sheet in a first direction, and places the electrode sheet on a horizontal placement surface of the stacking table, and an included angle between the first direction and the horizontal placement surface is 8-15°; a film swing mechanism covers the electrode sheet placed on the stacking table with a film, and then performs pressing by means of a pressure blade; the second sheet-picking gripper mechanism obliquely conveys a cut electrode sheet in a second direction, places the electrode sheet on the film covering the previous electrode sheet, and then pressing is performed by means of the pressure blade, and an included angle between the second direction and the horizontal placement surface is 8-15°; and the film swing mechanism covers the electrode sheet placed on the stacking table with a film, and then performs pressing by means of the pressure blade. The present application can improve the effect of rapidly positioning the electrode sheets during stacking, and the electrode sheets are rapidly stacked by means of a left-right alternately stacking manner, thereby improving the stacking efficiency.
Resumen de: WO2025118378A1
A positive electrode material, a preparation method therefor, and a use thereof. The positive electrode material comprises a base material and lithium oxalate particles covering at least part of the surface of the base material; and the particle size of the lithium oxalate particles is less than 200 nm. The lithium oxalate particles having the particle size less than 200 nm are loaded on the surface of the base material, thereby exerting the lithium supplementing effect of lithium oxalate to the maximum extent; and the positive electrode material is applied to a battery, thereby facilitating increase of the capacity and initial efficiency of the battery.
Resumen de: WO2025118342A1
A high-ductility battery aluminum foil and a preparation method therefor. The high-ductility battery aluminum foil comprises the following components in mass fraction: Si: 0.25-0.40%, Fe: 0.30-0.50%, Cu: 0.02-0.10%, and the balance being Al, wherein the amount of an iron-containing second phase in the section of the high-ductility battery aluminum foil is 1.1×102-4×104 per mm2; the amount of intermetallic compounds formed by the elements other than the element Fe with the element Al in the section of the high-ductility battery aluminum foil is less than or equal to 1.1×102 per mm2; the amount of elemental silicon particles in the section of the high-ductility battery aluminum foil is less than or equal to 1.1×10 2 per mm2. The high-ductility battery aluminum foil has a thickness less than or equal to 13 μm, a tensile strength greater than or equal to 250 MPa, and an elongation rate greater than or equal to 5%.
Resumen de: WO2025118326A1
Disclosed in the present disclosure are a battery assembling system and a control method therefor, and a battery production line, which relates to the technical field of batteries. The battery assembling system can reduce the risk of congestion during tray return and facilitate the miniaturization of the battery assembling system. The battery assembling system comprises a stacking platform, an assembling device, an assembling transfer line, and a return device, wherein the stacking platform is used for storing trays and battery modules located in the trays; one end of the assembling device is connected to one end of the stacking platform by means of the assembling transfer line, the assembling device is used for assembling the battery modules to be assembled, and the assembling transfer line is used for transporting the trays carrying the battery modules to be assembled to the assembling device; and the other end of the assembling device is connected to the other end of the stacking platform by means of the return device, and the return device is used for transporting the trays carrying the assembled battery modules to the stacking platform.
Resumen de: WO2025118374A1
A vehicle roof photovoltaic power system, comprising: a vehicle roof photovoltaic assembly (101); a photovoltaic power control module (102), which is connected to the vehicle roof photovoltaic assembly (101); a vehicle control unit (103); a vehicle-mounted charging apparatus (104), which is connected to the photovoltaic power control module (102); a vehicle-mounted storage battery (105), which is connected to the photovoltaic power control module (102); and a vehicle traction battery (106). The vehicle control unit (103) is configured to send a first system control instruction to the photovoltaic power control module (102) when the vehicle roof photovoltaic assembly (101) meets power generation conditions and a vehicle is in a traveling state, and to send a second system control instruction to the photovoltaic power control module (102) when the vehicle roof photovoltaic assembly (101) meets the power generation conditions and the vehicle is in a parking state. The photovoltaic power control module (102) is configured to supply power to the vehicle-mounted storage battery (105) on the basis of the first system control instruction, and to charge the vehicle traction battery (106) by means of the vehicle-mounted charging apparatus (104) on the basis of the second system control instruction and disconnect the power supply to the vehicle-mounted storage battery (105).
Resumen de: WO2025118377A1
A secondary battery and an electrical device, the secondary battery comprising a negative electrode sheet and an electrolyte solution. The negative electrode sheet comprises a negative electrode current collector and a negative electrode active material layer disposed on the negative electrode current collector, the negative electrode active material layer comprising a negative electrode active material. The electrolyte solution comprises an additive. The secondary battery satisfies the condition: 0.81≤y≤ 3.41, where Formula (1), which can enable the secondary battery to have good cycling performance, low impedance, and a low gas production rate.
Resumen de: WO2025118359A1
The present application relates to a stacking process and an integrated cutting and stacking machine. An electrode sheet distribution procedure is configured between a sheet preparation procedure and a core preparation procedure, and during the electrode sheet distribution procedure, electrode sheets to be stored are stored in an electrode sheet storage device in a spaced stacking manner, and the electrode sheets can be cyclically transferred in the electrode sheet storage device; therefore, high-speed feeding/discharging of the electrode sheets are realized, and the electrode sheets are not prone to being damaged during feeding and discharging, thereby ensuring that the electrode sheets are distributed with high efficiency and low damage between the sheet preparation procedure and the core preparation procedure, and providing a good foundation for improving the OEE of a stacking apparatus. Moreover, by means of the integrated cutting and stacking machine using the stacking process, the decoupling of the sheet preparation procedure from the core preparation procedure can also be realized; and when either of the sheet preparation procedure and the core preparation procedure is subjected to a fault, the normal operation of the other procedure can be ensured, thereby ensuring the OEE of the stacking apparatus and also reducing the failure rate of the apparatus.
Resumen de: WO2025118399A1
The present application relates to the technical field of lithium battery positive electrode materials, and specifically relates to a preparation method for a conductive carbon-coated additive for a lithium battery positive electrode material, and a use thereof. The preparation method comprises: step I, using a gas plasma process to carry out surface modification on a carbon nanotube so as to obtain a modified carbon nanotube, wherein the modified carbon nanotube is a hydrogenated carbon nanotube or an ammoniated carbon nanotube; step II, using a sulfur trioxide sulfonation method to carry out sulfonation treatment on organic carbon and the modified carbon nanotube so as to obtain a sulfonated carbon material; and step III, mixing the sulfonated carbon material and water, carrying out sanding treatment on the mixed solution, and uniformly dispersing to obtain a conductive carbon-coated additive as a lithium iron phosphate or lithium manganese iron phosphate carbon-coated additive. The conductive performance of positive electrode materials can be effectively improved.
Resumen de: WO2025118225A1
An electrochemical apparatus and an electronic apparatus. The electrochemical device comprises a positive electrode sheet, a negative electrode sheet and a separator; the negative electrode sheet comprises a negative electrode current collector, a surface of the negative electrode current collector being provided with a first negative electrode active material layer containing a silicon-based material; the separator is disposed between the negative electrode sheet and the positive electrode sheet, a polymer particle layer being disposed on a surface of the separator adjacent to the first negative electrode active material layer. By means of matching separators coated with polymer particle layers of different thicknesses based on differences in silicon content of the negative electrode active material layer coated on the surface of the negative electrode current collector in the negative electrode sheet, it is possible to reserve corner space to buffer electrode sheet extrusion and fracture, overcome the problems of electrode sheet fracture and cycle lithium deposition caused by silicon-based expansion, and maximize energy density.
Resumen de: WO2025118701A1
The present application provides a spacer, a battery cell, and a vehicle. The spacer comprises a spacer body and a traction member; the spacer body comprises a first side wall, a second side wall, and a base; the base is separately connected to the first side wall and the second side wall to define a pressure relief recess; the traction member is formed in the pressure relief recess and is fixedly connected to the spacer body; and a traction force can be applied to the traction member so as to drive the spacer to move.
Resumen de: WO2025118384A1
A composite battery cell, comprising positive electrode sheets, wherein each positive electrode sheet satisfies the condition that the ratio of the capacity per unit area of the positive electrode sheet to the capacity per unit area of any other positive electrode sheet is 0.9-1.1. The positive electrode sheets include first positive electrode sheets, and positive electrode active materials contained in the first positive electrode sheet comprise a first positive electrode active material and a second positive electrode active material, wherein the energy density of the first positive electrode active material is greater than that of the second positive electrode active material. On each first positive electrode sheet, 10% ≤ (I) ≤ 50%, the average single side surface density of a positive electrode active coating layer is 50-650 g/m2, and the specific surface resistance is 0.0001-0.1500 Ω/mm2·g.
Resumen de: WO2025118696A1
The present application provides an energy storage cabinet capable of directionally discharging flue gas, and an energy storage system. The energy storage cabinet comprises a box body; the box body is used for accommodating a plurality of stacked battery packs and a flue gas discharging pipe; the flue gas discharging pipe is arranged between a rear wall and the plurality of battery packs; the flue gas discharging pipe extends in a stacking direction of the plurality of battery packs; the flue gas discharging pipe is provided with a plurality of flue gas inlets, a flue gas outlet and a ventilation opening; the flue gas outlet and the ventilation opening are both communicated with an external environment of the energy storage cabinet; on the flue gas discharging pipe, the position of the flue gas outlet is higher than that of the ventilation opening; outer walls of at least some of the battery packs facing the flue gas discharging pipe are provided with pressure relief valves; first sealing members are arranged between the pressure relief valves and the flue gas inlets; an opening at one end of each first sealing member covers the periphery of the corresponding pressure relief valve, and an opening at the other end of the first sealing member covers the periphery of the corresponding flue gas inlet. High-temperature flue gas released when thermal runaway occurs in the battery packs is discharged to the flue gas discharging pipe through the flue gas inlets, and is further releas
Resumen de: WO2025118695A1
The present application relates to a ternary precursor and a preparation method therefor, a secondary battery, and an electric device. The ternary precursor comprises an inner core and a shell layer coating the surface of the inner core; the inner core comprises a sacrificial template material; the sacrificial template material comprises a first modification element; and the shell layer comprises a precursor material of a ternary material. The ternary precursor can effectively improve the cycle performance of the ternary material.
Resumen de: WO2025118241A1
A secondary battery and an electronic device. The secondary battery comprises a positive electrode sheet, a negative electrode sheet, and an electrolyte; the positive electrode sheet comprises a positive electrode material layer, the positive electrode material layer comprises a positive electrode active material, and the positive electrode active material comprises a cobalt element and a magnesium element; based on the mass of the positive electrode material layer, the mass percentage content of the magnesium element is A%, wherein 0.1≤A≤5; the electrolyte comprises a fluorinated solvent, and the fluorinated solvent comprises at least one of a compound represented by formula (I), a compound represented by formula (II), a compound represented by formula (III), or a compound represented by formula (IV); based on the mass of the electrolyte, the mass percentage content of the fluorinated solvent is B%, wherein 41.7≤B≤83.2 and 0.1≤100A/B≤6. The secondary battery provided has good high-temperature storage performance and high-temperature cycle performance.
Resumen de: WO2025118622A1
A lithium-ion battery having excellent high-temperature storage and high-temperature cycling performance. The lithium-ion battery comprises a positive electrode, a negative electrode, and a non-aqueous electrolyte solution. The negative electrode comprises a negative electrode material layer containing a silicon-based material. The non-aqueous electrolyte solution comprises a lithium salt, an organic solvent, and an additive, the organic solvent comprising fluoroethylene carbonate, and the additive comprising a silane compound containing at least one carbon-carbon double bond. The lithium-ion battery satisfies the following conditions: 5≤(S*R)/(F*T)≤35, 5≤f≤15, 1.4≤R≤1.68, 9≤S≤18, and 0.01≤T≤0.5. According to the lithium-ion battery, the mass percentage content of the organic solvent and the additive in the non-aqueous electrolyte solution are controlled, and the mass percentage content of elemental silicon in the negative electrode material layer is controlled and the compaction density of the negative electrode material layer is controlled to be within a certain range, such that the lithium-ion battery has excellent high-temperature storage performance and an excellent high-temperature cycle life, while also taking into account high energy density.
Resumen de: WO2025118828A1
A sleeve for a battery pack and the battery pack having same, which aim to solve the problem of thermal runway in the collision of a battery pack due to a sleeve resulting in an increase in the local strength of a case and the sleeve itself not easily undergoing collapse, but intruding into the battery pack with overall collapse to squeeze a battery cell and cause the structure of the battery cell to break. Thus, the sleeve comprises: a sleeve body (11), a sleeve cover (12) connected to one end of the sleeve body (11), and a flange (13) connected to the other end of the sleeve body (11) and extending outward from the sleeve body (11), wherein the sleeve cover (12) is provided with a through hole (121), the through hole (121) being located in the center of the sleeve cover (12) and running through the sleeve cover (12) in the axial direction of the sleeve; and an outer surface of the sleeve body (11) is provided with at least a pair of symmetrical collapse grooves (111), the collapse grooves (111) extending to a preset distance from the sleeve cover (12) in the axial direction of the sleeve body (11). In this way, when one side of a battery pack undergoes an impact, the sleeve is squeezed and deformed from the position of the collapse grooves (111), and thus avoids overall intrusion into the cavity of the battery pack that accommodates a battery cell; in addition, the strength of the sleeve in a vertical direction is also ensured to support the mounting of the battery pack.
Resumen de: WO2025118244A1
A secondary battery and an electronic apparatus. The secondary battery comprises a positive electrode sheet and an electrolyte solution, the positive electrode sheet comprising a positive electrode material layer. The positive electrode material layer comprises a positive electrode active material, the positive electrode active material comprising elemental cobalt and elemental nickel. Based on the mass of the positive electrode material layer, the mass percentage content of the elemental nickel is A%, where 0.05≤A≤20. The electrolyte solution comprises a fluorinated solvent, the fluorinated solvent comprising at least one of a compound represented by formula (I), a compound represented by formula (II), a compound represented by formula (III), and a compound represented by formula (IV). Based on the mass of the electrolyte solution, the mass percentage content of the fluorinated solvent is B%, where 41.6≤B≤83.1. The positive electrode active material comprises elemental cobalt and elemental nickel, and the electrolyte solution comprises a fluorinated solvent; regulating the values of A and B within the described ranges can enable the secondary battery to have high energy density and good high-temperature cycling performance.
Resumen de: WO2025118620A1
A graphite negative electrode active material and a preparation method therefor, a negative electrode sheet containing same, a secondary battery, and an electric device. A particle body of the graphite negative electrode active material comprises an internal area and a surface-layer area at least partially surrounding the internal area; the surface-layer area refers to an area formed by extending from the surface of the particle body of the graphite negative electrode active material to the interior of a particle by a distance of 30 nm; the mass percentage of crystalline carbon in the internal area is denoted as η1; the mass percentage of crystalline carbon in the surface-layer area is denoted as η2; and 10%≤η1-η2≤35%. The graphite negative electrode active material can improve the cycle performance of a battery.
Resumen de: WO2025118736A1
A battery cell (5), a battery and an electric apparatus. The battery cell (5) comprises a negative electrode sheet and a separator, wherein the separator comprises a porous substrate and a coating arranged on at least one surface of the porous substrate, the coating comprising nanocellulose and a granular filler; and the width of the separator is denote as A, the width of the negative electrode sheet is denoted as B, both are in units of mm, and 0
Resumen de: WO2025118172A1
A porous ferric phosphate precursor, a lithium iron phosphate material, and a preparation method therefor, relating to the technical field of positive electrode materials. When the porous ferric phosphate material precursor is used in batteries, the wetting area in an electrolyte can be increased and the diffusion path of Li+ ions can be shortened, thereby improving the rate performance of batteries and low-temperature performance of batteries; the electronic conductivity of batteries can also be increased. Moreover, the preparation method is simple to operate and beneficial to actual production.
Nº publicación: WO2025118567A1 12/06/2025
Solicitante:
CONTEMPORARY AMPEREX TECH CO LIMITED [CN]
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Resumen de: WO2025118567A1
Embodiments of the present application relate to the technical field of batteries, and provide a battery cell, a battery, an electric device, and an energy storage apparatus. The battery cell comprises a casing and an electrode assembly, the electrode assembly is accommodated in the casing, the volume of the casing is V, the capacity of the battery cell is C, and the volume of the casing and the capacity of the battery cell satisfy: 1.4 dm3≤V≤65 dm3, and 400 Ah≤C≤5000 Ah. Therefore, the situation that the battery cell has a too small volume and a too high capacity is avoided, so that the manufacturing cost of a high-capacity battery cell is reduced, achieving better economy; and the situation that the battery cell has a too large volume and a too low capacity is avoided, so that the volume energy density of the high-capacity battery cell is improved, thus taking both the economy and energy density requirements of the battery cell into account.
BOPI
Sede Electrónica
