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1452
results.
Updated on
05/05/2025 [07:14:00]
Results 275 to 300 of 1452
Absstract of: WO2025089639A1
Provided are a secondary battery having high sealing reliability and a sealing device which is for manufacturing the secondary battery and capable of reducing tact time. A secondary battery according to the present invention includes a battery case which has embedded therein an electrode assembly having electrode leads protruding therefrom and which includes a sealing portion structured to include a sealed outer periphery portion. The sealing portion includes: a first sealing portion at the electrode lead side of the battery case; and a second sealing portion at the electrode lead side of the battery case, wherein the first sealing portion and the second sealing portion each include one end and the other end in the protruding direction of the electrode leads, and the other end of the second sealing portion extends in a direction opposite to the protruding direction of the electrode leads and further than the other end of the first sealing portion.
Absstract of: WO2025089861A1
The present invention relates to an electrode separation device, an electrode transfer device including the electrode separation device, and an electrode transfer method. The electrode separation device includes: a plurality of adsorption units for respectively adsorbing two or more points on one surface of an electrode; a vibration control unit for applying vibration to the electrode; and a stretching unit horizontally moving at least one of the adsorption units toward or away from at least one of the remaining adsorption units to unfold the electrode adsorbed to the adsorption unit.
Absstract of: WO2025089164A1
This power storage element comprises: an electrode body in which electrode plates are wound; a container accommodating the electrode body; and a pair of terminals disposed on the container. The electrode body has a flat shape including a pair of curved portions facing each other, and a flat portion connecting the pair of curved portions. The container includes a pair of curved wall portions respectively facing the pair of curved portions, and flat wall portions respectively facing both surfaces of the flat portion of the electrode body. The pair of curved wall portions are a first curved wall portion and a second curved wall portion. The inner surface of the first curved wall portion and the inner surface of the second curved wall portion have a curved shape that follows the curved portions of the electrode body. The inner surfaces of the flat wall portions have a flat shape that follows the flat portion of the electrode body. The pair of terminals are disposed on one or a plurality of wall portions, among the wall portions constituting the container, of which the direction from the second curved wall portion toward the first curved wall portion is aligned with a direction penetrating the container from the inner surface to the outer surface thereof, and protrude in the direction from the second curved wall portion toward the first curved wall portion.
Absstract of: WO2025086940A1
A preparation method for and a use of a lithium-silicon alloy material. Under room temperature conditions, a layer of asphalt is pre-coated on the surface of a lithium-silicon alloy, and then a layer of LiF is coated, a lithium-silicon alloy negative electrode sheet is prepared via dry processing, and then assembly is performed to obtain a sulfide all-solid-state lithium battery. This lithium-silicon alloy negative electrode has high capacity (greater than 1500 mAh g-1). Coating materials having adhesive properties are selected to sequentially perform carbon coating and fluorine coating on the lithium-silicon alloy, so that the lithium-silicon negative electrode sheet can be easily prepared at room temperature. This two-layer coating method, while ensuring that the capacity of the lithium-silicon alloy is not reduced, improves the electronic conductivity of the lithium-silicon alloy negative electrode, effectively suppresses the formation of lithium dendrites on the negative electrode, and facilitates the formation of a compatible negative electrode interface with a sulfide solid-state electrolyte, thereby enabling the commercial application of sulfide all-solid-state lithium batteries.
Absstract of: WO2025086926A1
Provided in the present application is a thermal management device for an electric vehicle, comprising a connecting device. The connecting device comprises: an air inlet arranged on a first end thereof; an air outlet arranged on a second end thereof; and a channel arranged inside the connecting device and adapted for passage of air, one end of the channel being provided with the air inlet, and the other end of the channel being provided with the air outlet. The air inlet is used for receiving air; the air flowing in through the air inlet has a temperature lower than the ambient temperature of the environment in which the thermal management device is located; and the air flows out through the air outlet after passing through the channel. The second end of the connecting device is configured to connect or come into contact with a grille of the electric vehicle; the edge of the second end of the connecting device can enclose the grille of the electric vehicle; and the air flowing out through the air outlet has a temperature lower than the ambient temperature, thus cooling components in the grille.
Absstract of: WO2025086917A1
The present invention relates to the field of batteries, and in particular relates to a negative electrode sheet and a battery comprising the negative electrode sheet. The negative electrode sheet comprises a negative current collector and a negative electrode active coating on at least one side surface of the negative current collector. The negative electrode active coating comprises a negative electrode active material and a conductive agent. The negative electrode active material comprises a silicon-based material, and the conductive agent comprises a conductive material having a two-dimensional layered structure. Said conductive material has an interlayer spacing of D and a peel energy of N, satisfying 0.4 ≤ D/N ≤ 10. The negative electrode sheet comprises a conductive agent having a two-dimensional layered structure and a silicon-based material, such that the energy density and cycle life of the battery can be remarkably improved.
Absstract of: WO2025086916A1
A binder and a preparation method therefor, a battery and an electric device. The binder comprises an acrylate polymer, the number-average molecular weight of the acrylate polymer is 10 kDa to 3,000 kDa, the molecular structure of the acrylate polymer contains a side-chain group, and the side-chain group comprises a fluorinated segment, a cyano segment and a cross-linkable segment, wherein the mass proportion of a fluorine element in the molecular structure is 3%-30%, and the mass proportion of a cyano group in the molecular structure is 10%-40%.
Absstract of: WO2025086200A1
A modified lithium-rich manganese-based positive electrode material, and a preparation method therefor and the use thereof. The preparation method comprises the following steps: (1) injecting a mixed metal salt solution, a precipitant, a complexing agent, a cationic dopant and an anionic dopant into a reaction device in a parallel flow manner, and subjecting same to a co-precipitation reaction; (2) washing the product of the co-precipitation reaction, so as to obtain a modified lithium-rich manganese-based precursor; and (3) mixing the modified lithium-rich manganese-based precursor with a lithium source, and sintering same, so as to obtain a modified lithium-rich manganese-based positive electrode material. By means of the co-precipitation reaction, uniform atom-scale co-doping of anions and cations is achieved, the content of doping atoms is precise and controllable, and the problems of introduction of impurities, element segregation and even component deviation caused by traditional solid-phase reactions are avoided.
Absstract of: WO2025086098A1
A coated sodium ion battery positive electrode material, a preparation method therefor, and a use thereof. The coated sodium ion battery positive electrode material comprises an aluminum phosphate shell and a sodium ion battery core; and the chemical formula of the sodium ion battery core is: NaaLibNixFeyMnzCumMnO2+w, wherein a+b=1, 0.8≤a≤1.0, 0
Absstract of: WO2025089853A1
Provided is a current collecting plate that is connected to an electrode tab provided at one end among the two ends of the electrode assembly in the axial direction, wherein the one end is inserted into a can while facing the bottom thereof. The current collecting plate comprises: a terminal joint part that has one side surface joined to a cap, the bottom of the can, or an electrode terminal; an electrode joint part that surrounds the terminal joint part from the outside of the terminal joint part in the radial direction and has the other side connected to the electrode tab of the electrode assembly; elastic connection parts that are disposed between the electrode joint part and the terminal joint part and electrically connect the electrode joint part and the terminal joint part; and an opening that is disposed between the elastic connection parts adjacent in the circumferential direction and separates the electrode joint part and the terminal joint part in the radial direction or the axial direction.
Absstract of: WO2025089415A1
One embodiment of the present invention relates to a carbon nanotube dispersion composition containing a carbon nanotube, a dispersant, and a solvent, wherein the content of metal foreign particles determined under specific condition 1 is 1.0 mg or less.
Absstract of: WO2025089413A1
The present invention is capable of providing: a method for producing a carbon material dispersion that contains a small amount of metal magnetic foreign matter in the carbon material dispersion and that exhibits excellent temporal stability; and, additionally, a secondary battery using said carbon material dispersion and having good cycle characteristics. The present disclosure relates to a method for producing a carbon material dispersion containing a carbon material, a dispersant, and a solvent, the method comprising the following steps (1) to (3). Step (1) A step for obtaining a carbon material pre-dispersion (X1) having a sliding angle of less than 70° with respect to a metal substrate and a cumulative particle diameter D50 of 20 μm or greater. Step (2) A step for obtaining a carbon material pre-dispersion (X2) by removing metal magnetic foreign matter by magnetic separation treatment simultaneously with and/or after the production of the carbon material pre-dispersion (X1). Step (3) A step for producing a carbon material dispersion by dispersing the carbon material pre-dispersion (X2).
Absstract of: WO2025089381A1
This lithium ion secondary battery comprises a positive electrode, a negative electrode, an electrolytic solution, and a separator. The negative electrode operates by intercalation of lithium ions. The electrolytic solution contains a nonaqueous solvent and a lithium salt, and has a lithium salt concentration of 2.5 mol/L or more. The separator has a polyolefin microporous film, a fibrous meta-type aromatic polyamide included in the pores of the polyolefin microporous film, and a porous layer that is provided to one surface or both surfaces of the polyolefin microporous film and contains a meta-type aromatic polyamide.
Absstract of: WO2025086892A1
A secondary battery, the secondary battery comprising a positive electrode sheet, a negative electrode sheet, and an electrolyte. The positive electrode sheet comprises a positive current collector, a base coating layer, and a positive electrode active material layer, the base coating layer being arranged between the positive current collector and the positive electrode active material layer. The base coating layer comprises an inorganic metal oxide, the element M in the inorganic metal oxide comprises at least one of Al, Ti, Sn, Sb, or Mg, and the inorganic metal oxide has a mass percentage content W1 of 55% to 99%. A first compound in the electrolyte comprises at least one of fluoroethylene carbonate, difluoroethylene carbonate, formula (I), formula (II), or formula (III), and the mass percentage content of the first compound is a%, 0.15 ≤ a ≤ 21. By regulating and controlling the type of element included in the inorganic metal oxide, W1, and the type and content of the first compound in the electrolyte to be within the ranges above, the safety performance of the secondary battery can be improved while the cyclic stability of the secondary battery is ensured.
Absstract of: WO2025087349A1
An energy storage device (100), an energy storage system (2000), and a charging network (1000). The energy storage device (100) comprises a control module (30), a plurality of compartment bodies (10), and a plurality of energy units (2). The plurality of compartment bodies (10) are arranged in a first direction of the compartment bodies (10). The plurality of energy units (2) are accommodated in at least one compartment body (10). The control module (30) is used for electrically controlling the plurality of energy units (2). The size of at least one compartment body (10) among the plurality of compartment bodies (10) in the first direction is smaller than the size of one standard container in the first direction, the sum of the sizes of the plurality of compartment bodies (10) in the first direction is larger than the sum of the sizes of one or more standard containers in the first direction, and the first direction is the length direction, the width direction or the height direction of the compartment bodies (10).
Absstract of: WO2025086847A1
Provided in the present application is a battery pack, comprising an enclosure plate, a liquid cooling plate and a battery cell, wherein the battery cell is arranged on the liquid cooling plate; the enclosure plate encloses the liquid cooling plate and the battery cell, and the liquid cooling plate is connected to the enclosure plate; an accommodating cavity is provided between the enclosure plate and the battery cell; the liquid cooling plate is in communication with and is provided with a liquid output pipe and a liquid intake pipe; the liquid output pipe and the liquid intake pipe are both located in the accommodating cavity; and a connecting assembly is provided on each of the top surface and bottom surface of the enclosure plate. An electrical connector and a liquid cooling connector can both be enclosed by the enclosure plate so as not to be exposed to the outside; moreover, connecting assemblies capable of fitting with each other are provided on both the top surface and the bottom surface of the enclosure plate, and the cooling plate is fixedly connected to the enclosure plate, so that the effect of vertical stacking and assembly of two battery packs can be achieved by means of the fitting between connecting assemblies of enclosure plates of the two battery packs, thereby simplifying the operation of assembling the battery packs into a battery module.
Absstract of: WO2025086032A1
A device for separating positive electrode current collectors of batteries by means of high-voltage pulse, comprising a treatment tank (1), a rotating table (3), a collection tank (2), a pulse discharge part, and a pressing plate (4). The rotating table (3) is arranged in the treatment tank (1) in a liftable/lowerable manner, a plurality of current collector placement positions are arranged on the upper side of the rotating table (3), all the current collector placement positions are distributed at intervals around the axis of the rotating table (3), and a positive electrode contact (301) and a negative electrode contact (302) are arranged in each current collector placement position. The collection tank (2) is arranged around the outer circumferential side of the treatment tank (1), and the collection tank (2) is used for collecting aluminum foils separated from positive electrode current collectors (100). A positive electrode output end of the pulse discharge part is electrically connected to each positive electrode contact (301), and a negative electrode output end of the pulse discharge part is electrically connected to each negative electrode contact (302). The pressing plate (4) is arranged at the upper side of the rotating table (3) in a liftable/lowerable manner, and the pressing plate (4) is used for pressing the positive electrode current collectors (100) on the rotating table (3).
Absstract of: WO2025086029A1
A composite multi-element positive electrode material, a preparation method, and a use. The multi-element positive electrode material is modified, and near-surface doping is combined with coating using a specific fast-ion conductor material. The near-surface doping improves the stability of the structure of the multi-element material, improves a lattice state, and achieves a certain supporting effect; by building a fast-ion conductor coating layer, the interface stability of the multi-element positive electrode material is further improved, damage to an interface of the multi-element positive electrode material in a rolling process is effectively reduced, exposure and surface slip properties of a fresh interface are reduced, and then the storage performance under a high voltage is improved. By combining near-surface doping with coating using a fast-ion conductor, the obtained composite multi-element positive electrode material has excellent rolling resistance and excellent storage performance under a high voltage of 4.5 V, and the fast-ion conductor with which the surface is coated is beneficial to further improving the capacity per gram.
Absstract of: WO2025086100A1
A copper-based sodium positive electrode material, and a preparation method therefor and a use thereof. The chemical structural formula of the copper-based sodium positive electrode material is NaxMyCunO2, wherein M comprises at least three of Li, K, Al, Ti, Cr, Mn, Fe, Co, Ni, Zn, Mg, Sn, Zr, Mo, Nb, Y, W, In, and Ge, 0.5≤x≤1, 0≤y<1, and y+n=1.
Absstract of: WO2025089824A1
The present invention is characterized in that negative active material comprises silicon-based active material, the specific surface area of which is 5 m2/g or greater, the silicon-based active material being porous with internal pores, having tap density of 0.2-0.8 g/cm3, comprising at least one selected from the group consisting of SiOx (x=0) and SiOx (0
Absstract of: WO2025089820A1
The present invention relates to a cathode active material and a lithium secondary battery comprising same and, more specifically, to a cathode active material and a lithium secondary battery comprising same, wherein, by adjusting the content of a fine powder within the cathode active material containing a Mid-Ni type lithium transition metal oxide having a relatively low nickel content and controlling the particle size distribution of the lithium transition metal oxide contained in the cathode active material, improved capacity characteristics and lifetime characteristics, and improved driving characteristics at high voltage can be achieved.
Absstract of: WO2025089809A1
The present invention relates to a method for manufacturing a sulfide-polymer hybrid electrolyte membrane and a sulfide-polymer hybrid electrolyte membrane manufactured thereby. More specifically, disclosed is a method for manufacturing a sulfide-polymer hybrid electrolyte membrane, the method comprising: a first step of preparing a polymer electrolyte solution by mixing a polymer binder and a lithium solution including a lithium salt, an organic solvent, and an ionic liquid and then further adding a nonpolar solvent, and warming and stirring; a second step of preparing a sulfide-polymer hybrid electrolyte slurry by adding a sulfide-based solid electrolyte to the polymer electrolyte solution and stirring; a third step of forming a membrane by applying the hybrid electrolyte slurry onto a substrate and drying; and a fourth step of separating the membrane from the substrate, wherein the sulfide-polymer hybrid electrolyte membrane is manufactured in which the sulfide-based solid electrolyte is uniformly distributed in the polymer electrolyte.
Absstract of: WO2025089825A1
The present application relates to a negative active material, a method for preparing same, a negative electrode composition, a negative electrode for a lithium secondary battery comprising the negative electrode composition, and a lithium secondary battery comprising the negative electrode. Etching the crystalline surface by surface-etching the crushed silicon-based active material itself via alkaline solution treatment allows lithium ion mobility to be controlled, and the specific surface areas of the 111 and 220 planes in the silicon-based active material can be adjusted in response to changing etching conditions, thereby allowing intercalation/deintercalation reaction of lithium to be even, and the stress to the silicon-based active material to be reduced.
Absstract of: WO2025086861A1
Disclosed in the present application are a battery cooling method and apparatus based on an energy storage system, which method and apparatus are applied to a server of an energy storage system. The method comprises: acquiring a cooling requirement and a preset storage amount of each battery cluster among a plurality of battery clusters; determining as a target battery cluster a battery cluster among the plurality of battery clusters of which the cooling requirement is not met; and when it is detected that the storage amount of a refrigerant in a liquid storage apparatus of the target battery cluster is a preset storage amount of the target battery cluster and the cooling requirement of the target battery cluster is not met, executing at least one adjustment and detection operation until the cooling requirement of the target battery cluster is met. In the present application, a refrigerant in a liquid storage apparatus of a battery cluster of which the cooling requirement is met is mobilized so as to be able to fully cool a battery cluster of which the cooling requirement is not met, such that it is not necessary to perform calculation and adjustment on the refrigerant in the entire energy storage system, thereby reducing the calculation pressure and increasing the cooling speed.
Nº publicación: WO2025086745A1 01/05/2025
Applicant:
SHENZHEN CAPCHEM TECH CO LTD [CN]
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Absstract of: WO2025086745A1
The present application relates to the technical field of lithium-ion batteries, and specifically relates to a cylindrical lithium-ion battery having improved high-temperature storage performance and high-temperature cycle performance. The cylindrical lithium-ion battery comprises a positive electrode, a negative electrode and a non-aqueous electrolyte solution, wherein the negative electrode comprises a negative electrode material layer containing a negative electrode active material, the negative electrode active material comprising a silicon-based material; and the non-aqueous electrolyte solution comprises a lithium salt, an organic solvent and an additive, the organic solvent comprising dimethyl carbonate, and the additive comprising a silane compound represented by structural formula 1. The cylindrical lithium-ion battery satisfies the following condition: 0.04≤(100-D)×F/S≤5, wherein 50≤D≤75, 0.01≤F≤0.5, and 5≤S≤20. In the cylindrical lithium-ion battery of the present application, the electrolyte solution contains the silane compound represented by structural formula 1 as an additive and dimethyl carbonate as the organic solvent, and therefore the problem of battery failure caused by the expansion of the silicon-based negative electrode can be improved, the service life of the battery can be prolonged, the battery is ensured to have good high-temperature performance, and the effect of inhibiting gas production during high-temperature storage is obvious
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