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1111
results.
Updated on
02/09/2024 [07:41:00]
Results 475 to 500 of 1111
Absstract of: EP4421901A1
Disclosed herein relates to a magnetic alignment device for a negative electrode and a method for manufacturing a negative electrode using the device, wherein the magnetic alignment device applies a magnetic field to a negative electrode slurry by introducing a magnet part to an upper and a lower portion of a negative electrode current collector on which the negative electrode slurry is applied, respectively. By applying a stronger magnetic field in a second region of the magnet part located downstream along the transfer direction of the negative electrode current collector than in a first region of the magnet part located upstream, and by arranging a drying part adjacent to the end of the second region where the stronger magnetic field is applied, a negative electrode having a significantly higher alignment of the carbon-based negative electrode active material contained in the negative electrode slurry can be manufactured.
Absstract of: EP4421143A1
This application discloses a binder, a separator, an electrode plate, an electrode assembly, a battery cell, a battery, and an electric apparatus, and relates to the field of battery technologies. The binder includes an organic polymer and an inorganic substance, and the binder has a first glass transition temperature and a second glass transition temperature within a range of -10°C to 95°C, where the first glass transition temperature is higher than the second glass transition temperature. The organic polymer and the inorganic substance act together to obtain the binder with good adhesion performance and appropriate glass transition temperatures, suitable for fully exerting the adhesion performance of the binder under battery operation conditions, and thereby improving the kinetic and safety performance of batteries.
Absstract of: EP4421934A1
Provided is a rechargeable lithium battery comprising a positive electrode comprising a positive electrode active material; a negative electrode comprising a negative electrode active material; and an electrolyte solution comprising a non-aqueous organic solvent, a lithium salt, and an additive, wherein the negative electrode active material comprises a Si composite, the additive comprises a compound represented by Chemical Formula 1, the lithium salt comprises a compound represented by Chemical Formula 2, and the compound represented by Chemical Formula 2 is comprised in an amount of about 5 to about 70 wt% based on 100 wt% of the total amount of the lithium salt.Details of Chemical Formula 1 and Chemical Formula 2 are as described in the specification.
Absstract of: EP4421908A1
The present application discloses a composite cathode material and a method for preparing the same, a positive electrode plate, a battery, and an electrical device. The composite cathode material includes a cathode bulk and a coating layer disposed on a surface of the cathode bulk. The coating layer includes a subsurface layer and a surface layer disposed on the surface of the cathode bulk in sequence. The subsurface layer includes a phosphorus-containing electrolyte, and the surface layer includes a boron-containing electrolyte. The phosphorus-containing electrolyte is represented by Lia1X1b1PO4, where 0
Absstract of: EP4421900A1
Disclosed herein relates to a negative electrode for a lithium secondary battery and a magnetic alignment device for manufacturing the same. The magnetic alignment device applies a magnetic field to the negative electrode slurry by introducing a magnet part to an upper and a lower portion of a negative electrode current collector to which the negative electrode slurry is applied, respectively, wherein a first region located upstream along a transfer direction of the negative electrode current collector is capable of applying a stronger magnetic force than a second region located downstream in the magnet part. Accordingly, in manufacturing the negative electrode, the alignment of the carbon-based negative electrode active material contained in the negative electrode slurry and the arithmetic mean height of the surface of the negative electrode active layer can be easily controlled to a certain range. Furthermore, the negative electrode prepared according to the method has the advantage of having excellent electrical properties and surface properties of the negative electrode active layer.
Absstract of: EP4421142A1
This application discloses a binder and a preparation method thereof, a separator, an electrode plate, an electrode assembly, a battery cell, a battery, and an electric apparatus, and relates to the field of battery technologies. The binder includes a coating layer and a core disposed in the coating layer, where the coating layer includes a polyacrylate copolymer, and the core includes ceramic. The binder is applied onto the separator and used in the battery, providing strong adhesion. This enhances the pre-cold pressing adhesion force and hardness of the battery cell, and reduces electrochemical impedance, thus improving the cycling performance of the battery.
Absstract of: EP4421141A1
This application relates to the field of battery technologies, and in particular, to a binder and a preparation method thereof, and a separator, electrode assembly, battery cell, battery, and electric apparatus containing such binder. The binder includes a core layer structure and a shell layer structure provided on surface of the core layer structure, where the core layer structure includes a polyvinylidene fluoride polymer, and the shell layer structure includes a polyacrylate polymer. Polyvinylidene fluoride is a homopolymer with a crystallinity of about 50%, resulting in insufficient adhesion force. Therefore, in this application, the polyacrylate polymer is used to encapsulate the polyvinylidene fluoride polymer to obtain a core-shell-structured binder, so that the crystallinity of the polyvinylidene fluoride polymer in the core-shell-structured binder is improved, and adhesion performance of the core-shell-structured binder is improved, thereby increasing adhesion force between a separator and an electrode plate via the binder.
Absstract of: EP4421930A1
Provided is a technology obtaining an electricity storage device including a wound electrode body with high productivity. A method of manufacturing an electricity storage device of one embodiment disclosed herein includes: a winding step S2 of winding a positive electrode 22 and a negative electrode 24 with a separator 26 interposed therebetween to produce a wound body 20A; and after the winding step S2, a pressing step S3 of pressing the wound body 20A to form each of wound electrode bodies 20a, 20b, and 20c having a flat shape, wherein the separator partially having an adhesive layer 6 on at least one surface thereof is used in the winding step S2, the adhesive layer 6 includes a first adhesive region 6A and a second adhesive region 6B, and the thickness T1 of the first adhesive region 6A is 1.5 times or more the thickness T2 of the second adhesive region 6B. The manufacturing method further includes a formation step S1 before the winding step S2.
Absstract of: EP4421955A2
A rechargeable battery module is provided. The rechargeable battery module may include; a plurality of battery cells; a lower case configured to accommodate lower ends of the battery cells; a holder case coupled to the lower case to accommodate the battery cells; a plurality of bus bars positioned on the holder case; bonding wires configured to connect the battery cells to the respective bus bars; and an upper case configured to cover the bus bars and the bonding wires and coupled to the holder case.
Absstract of: EP4421479A1
An image acquisition apparatus and a defect detection system of electrode plate are provided. The image acquisition apparatus is configured to acquire images of positive and negative electrode plates wound by a winding machine. The image acquisition apparatus includes a camera, a first light source, a second light source, and a lens. The first light source is configured to emit first light toward one electrode plate so as to illuminate a local portion of the electrode plate, and the first light source emits the first light at an angle such that the first light is able to be reflected to the camera via the electrode plate. The second light source is configured to emit second light toward the other electrode plate so as to illuminate a local portion of the other electrode plate. The lens includes a reflective region, where the reflective region is arranged at an angle to reflect the second light reflected by the second electrode plate to the camera, such that the camera acquires a stitched image of the positive and negative electrode plates, and the lens allows no interference present between a reflection path of the second light and a reflection path of the first light. In the foregoing technical solution, the image acquisition apparatus has a simple structure and low costs, and is conducive to improving quality of acquired images of electrode plates, thereby improving accuracy in detecting defects of electrode assemblies.
Absstract of: EP4421963A1
The present invention relates to a battery pack configured such that an interconnected board (ICB) is integrally formed at a battery management system (BMS), wherein energy density of the battery pack is increased by improving sensing wire bonding of a busbar for a plurality of battery cells in the space of a battery pack coupled to the ICB-integrated BMS at the time of sensing wire bonding of the ICB connected to the busbar.
Absstract of: EP4421910A1
An electrode for an all-solid-state battery is provided. The electrode comprises granules including a core containing an active material, a first conductive material and a binder, and a coating layer containing a solid electrolyte and a second conductive material disposed in contact with an outside of the core. According to one embodiment of the present invention, the first and second conductive materials have different sizes or shapes. The first conductive material has an aspect ratio of 4000 to 6000 and a BET specific surface area of 100 m<sup>2</sup>/g to 300 m<sup>2</sup>/g. The second conductive material has an aspect ratio of 100 to 300 and a BET specific surface area of 10 m<sup>2</sup>/g to 30 m<sup>2</sup>/g. The granules form an excellent electrical network in the interior of the granules even under the all-solid-state conditions, which contributes to the improvement of the battery performance when applied as an electrode for an all-solid-state battery.
Absstract of: EP4421939A1
This application provides an electrochemical apparatus and an electronic apparatus. The electrochemical apparatus includes a positive electrode, a negative electrode, and an electrolyte, where the electrolyte includes propylene carbonate, ethylene carbonate, and a nitrile additive. Based on a mass of the electrolyte, a mass percentage of the propylene carbonate is 4% to 26%, a mass percentage of the ethylene carbonate is 14% to 46%, and a mass percentage of the nitrile additive is 2.8% to 8.5%. A viscosity of the electrolyte at 25°C is less than or equal to 5.8 mPa·s. By coordinately controlling the adding percentages of the propylene carbonate, ethylene carbonate, and nitrile additive, as well as the viscosity of the electrolyte, the contradiction between high-voltage and high-temperature stability and room-temperature kinetic performance of the electrochemical apparatus can be resolved.
Absstract of: EP4421949A1
A battery case according to the present disclosure includes a support panel provided to support a battery assembly; a spacing panel provided to face the support panel and forming an accommodating space for accommodating the battery assembly between the support panel and the spacing panel; a two-side panel provided to face each other to connect the support panel and the spacing panel to form a side surface of the accommodating space; a blocking panel disposed between the support panel and the spacing panel in parallel with the two-side panel to compart the accommodating space; and a cooling panel formed in the accommodating space in parallel with the blocking panel and cooling the battery assembly.
Absstract of: GB2627549A
Disclosed in the present invention is a method for recovering and processing a retired battery electrode plate. The method comprises disassembling a retired battery to obtain an electrode plate, energizing two ends of the electrode plate until a binder on the electrode plate is heated and melted, and then separating out an electrode material and a current collector, and when the electrode plate is a negative electrode plate, ball milling the separated electrode material, winnowing the ball-milled material to obtain graphite, subjecting the graphite to an alkali treatment, adding the graphite, which has been subjected to the alkali treatment, and an aggregate to softened asphalt, and stirring same to obtain conductive asphalt. In the present invention, the two ends of the electrode are energized, such that the binder is melted into liquid to flow out of the current collector, and the electrode material is stripped off the electrode plate. The method has a low energy consumption and a high graphite recovery rate; subjecting the graphite to the alkali treatment can reserve -OH on the surface of the graphite and part of alkali between graphite layers, and can improve the interface bonding property of the graphite to the asphalt, such that the structure is tighter, the compressive strength is higher, and the service life is longer during the process of using the conductive asphalt.
Absstract of: EP4420874A1
The present disclosure relates to a heat control member, a battery module comprising the heat control member and a battery pack. The heat control member comprises at least two layers of an aerogel composition, wherein the aerogel composition includes a reinforcement material, the aerogel composition including one or more additives, the additives being present at a level of at least about 5 to 20 percent by weight of the aerogel composition; at least one compliant member being layer of compliant material disposed between a first layer of the aerogel composition and a second layer of the aerogel composition; a second layer of a thermally capacitive material disposed at a major surface first layer of the aerogel composition; and a second layer of a thermally capacitive material disposed at a major surface of the second layer of the aerogel composition.
Absstract of: EP4421899A1
Disclosed are a secondary battery and a battery pack, in which a non-Faraday capacitance of a negative electrode plate and a grain size of a negative electrode active material are controlled to be within a predetermined range, so that the negative electrode plate and the secondary battery have good rate capability, and in which a dispersion degree of the positive electrode active material and a dispersion degree of the negative electrode active material are controlled to be within a predetermined range, so that the secondary battery can have high rate capability and high energy density.
Absstract of: EP4421917A1
The present application provides a positive electrode active material, a method for the preparation thereof and a positive electrode plate, a secondary battery and an electrical device containing the same. The positive electrode active material having a core-shell structure, comprising a core and a shell covering the core, wherein the core has a chemical formula of Li<sub>a</sub>A<sub>x</sub>Mn<sub>1-y</sub>B<sub>y</sub>P<sub>1-z</sub>C<sub>z</sub>O<sub>4-n</sub>D<sub>n</sub>, the shell comprises a first cladding layer covering the core, and a second cladding layer covering the first cladding layer, wherein the first cladding layer comprises pyrophosphate MP<sub>2</sub>O<sub>7</sub> and phosphate XPO<sub>4</sub>, and the second cladding layer comprises carbon. The positive electrode active material of the present application enables the secondary battery and electrical device to have a relatively high energy density, and good cycling performance, rate performance and safety performance.
Absstract of: EP4421890A1
Embodiments of this application provide an electrode plate, an electrode assembly, a battery cell, a battery, and an electric device, where the electrode plate includes an active substance region and a non-active substance region arranged along a first direction. The non-active substance region is provided with a bending structure bent along a second direction, the bending structure extends along a third direction, and in the third direction, the active substance region and the bending structure have the same size, where the second direction is a thickness direction of the active substance region, and the first direction, the second direction, and the third direction are perpendicular to each other. This not only increases the space utilization and energy density of the battery cell, but also simplifies the production process and improves the production efficiency of the battery cell.
Absstract of: GB2616231A
Disclosed is a method for preparing a graphene-based sodium ion battery negative electrode material, comprising adding graphene oxide into ethanol absolute, carrying out ultrasonic treatment at a certain temperature to obtain a graphene oxide alcohol dispersion, then preparing a sodium hexanitritocobaltate solution, adding the graphene oxide alcohol dispersion into the sodium hexanitritocobaltate solution, carrying out solid-liquid separation to obtain a solid, isolating the solid from oxygen for calcination, and washing and drying to obtain a graphene-based sodium ion battery negative electrode material. In the present invention, sodium hexanitritocobaltate is subjected to alcohol precipitation by means of a graphene oxide alcohol dispersion, and then the next step of sintering is used to prepare a target product; sodium hexanitritocobaltate contains a large amount of nitryl, and graphene oxide is doped with nitrogen by means of sodium hexanitritocobaltate; and at the same time, cobalt monoxide is also added, so that the specific capacity and the cycle performance of the material are improved.
Absstract of: US2024038993A1
A doped sodium vanadium phosphate and a preparation method and application thereof. Preparation steps of a nitrogen-doped peony-shaped molybdenum oxide in raw materials of the doped sodium vanadium phosphate are as follows: adding a regulator into a molybdenum-containing solution for reaction, concentrating and thermal treatment to obtain a peony-shaped molybdenum oxide; and dissolving the peony-shaped molybdenum oxide in a conditioning agent, and adding an amine source for standing, centrifuging, washing and heat treatment, thus obtaining the nitrogen-doped peony-shaped molybdenum oxide.
Absstract of: GB2619456A
Disclosed in the present invention are a hard carbon negative electrode material, and a preparation method therefor and the use thereof. A substrate of the hard carbon negative electrode material is prepared by taking starch as a raw material; and the diameter of an internal pore of the hard carbon negative electrode material is greater than that of a surface pore thereof. The rational pore diameter and large interlayer spacing of the hard carbon negative electrode material are beneficial to the intercalation/deintercalation of sodium ions.
Absstract of: FR3146029A1
L’invention concerne une batterie électrochimique (1) renfermant un boîtier (2) comportant au moins une cellule électrochimique (3), laquelle cellule électrochimique (3) comporte des électrodes (4), où ledit boîtier (2) comporte, en bout de ladite cellule électrochimique (3) ou/et autour de ladite cellule électrochimique (3), un moyen de précontrainte (5) au moins axial par rapport à un axe de cellule (D), et ledit moyen de précontrainte (5) forme un élément de pression entre lesdites électrodes (4) et la paroi interne dudit boîtier (2) afin de maintenir une pression constante entre lesdites électrodes (4). L’invention concerne encore un véhicule automobile (100) comportant une telle batterie (1). Figure 1
Absstract of: FR3146022A1
L’invention concerne une batterie électrique renfermant au moins un boîtier (2) comportant lui-même au moins une cellule électrochimique (3), laquelle cellule électrochimique (3) comporte des électrodes (4) l’une positive, l’autre négative, où ladite batterie comporte un système de refroidissement homogène pour ladite cellule électrochimique (3) qui est creuse et dont lesdites électrodes (4) sont enroulées autour d’un canal de refroidissement (6) apte à recevoir un fluide caloporteur pour l’ajustement en température, notamment le refroidissement, de ladite cellule électrochimique (3). L’invention concerne encore un véhicule automobile électrique ou hybride, comportant au moins une telle batterie. Figure 3
Nº publicación: FR3146025A1 23/08/2024
Applicant:
PSA AUTOMOBILES SA [FR]
PSA AUTOMOBILES SA
Absstract of: FR3146025A1
Un aspect de l’invention concerne une plaque de refroidissement 5 de cellules électrochimiques 3 d’un dispositif de stockage électrique 1, la plaque de refroidissement 5 étant agencée pour être prise en sandwich entre deux cellules électrochimiques 3 du dispositif de stockage électrique 1, la plaque de refroidissement 5 comportant : Un circuit de refroidissement 6 de type caloduc oscillant construit et agencé pour contenir un fluide de refroidissement diphasique, et Un premier dispositif d’échappement 8 construit et agencé pour autoriser une évaporation d’une partie du fluide de refroidissement diphasique lorsqu’il atteint une première température seuil prédéterminée ou une première pression seuil prédéterminée. Figure 2
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