CN111786001B - Device and method for spin-drying and soaking cylindrical battery cell - Google Patents
Device and method for spin-drying and soaking cylindrical battery cell Download PDFInfo
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- CN111786001B CN111786001B CN201910272111.0A CN201910272111A CN111786001B CN 111786001 B CN111786001 B CN 111786001B CN 201910272111 A CN201910272111 A CN 201910272111A CN 111786001 B CN111786001 B CN 111786001B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0422—Cells or battery with cylindrical casing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The invention provides a spin-drying and soaking device for a battery core of a cylindrical battery, which is provided with a liquid collecting barrel, an injection pipe and a winding core rotating device. In the collection liquid section of thick bamboo was arranged in to electric core, the book core of electric core was connected with the book core connecting portion that roll up core rotary device to roll up the drive connecting portion of core rotary device and the pivot of motor directly or indirectly link to each other, the filling tube can stretch into to the hollow portion of rolling up the core. The rotating shaft of the motor drives the roll core rotating device to rotate, so that the whole battery core is driven to rotate, and liquid in the winding part of the battery core can be thrown out or continuously injected into the liquid in the roll core to fully soak the whole battery core under the action of centrifugal force. In addition, the invention also provides a spin-drying and infiltrating method of the battery core of the cylindrical battery. By the spin-drying and infiltrating device and the spin-drying and infiltrating method, the whole battery cell can be spin-dried and infiltrated, the production efficiency is improved, the spin-drying and infiltrating effects are ensured, and the energy consumption can be saved.
Description
Technical Field
The invention relates to the field of batteries, in particular to a spin-drying and infiltrating device and a spin-drying and infiltrating method for a cylindrical battery cell.
Background
The lithium slurry battery is a novel lithium ion battery with low cost, long service life, high safety and easy recovery, and the lithium slurry has a dynamic contact conductive network, so that the thickness of an electrode can reach 10-50 times of that of a traditional lithium ion battery, and the problems of battery capacity reduction, cycle life attenuation and the like caused by falling or loosening of an electrode material of the traditional lithium ion battery can be avoided. The cylindrical lithium slurry battery adopting the winding mode can greatly simplify the treatment process of the electrode plate and has obvious manufacturing cost advantage.
The cylindrical lithium slurry battery is similar to the cylindrical lithium ion battery, and the production process of the cylindrical lithium slurry battery needs to completely dry the production solvent before the electrolyte is injected. However, since the electrode sheet of the lithium slurry battery is thicker and the diameter of the cylindrical lithium slurry battery is several times of that of the conventional cylindrical lithium ion battery, on one hand, in the drying process, the solvent in the battery core is more difficult to diffuse to the outer surface of the battery core after winding, and only hot air drying is adopted to increase the evaporation speed of the solvent on the outer surface of the battery core, so that the diffusion effect of the solvent in the battery core is limited, and the energy consumption is higher in the whole drying process of the battery core; on the other hand, in the process of soaking in liquid such as battery electrolyte, the soaking liquid gradually permeates the whole battery core from the inside and/or the outside of the winding battery core through capillary action, the time for completely soaking the battery core is long, and the soaking effect cannot be guaranteed.
Disclosure of Invention
In order to solve the problems, the invention provides a spin-drying and infiltration device for a battery core of a cylindrical battery, which is provided with a liquid collection cylinder, an injection pipe and a winding core rotating device. The electric core of the cylindrical battery is arranged in the liquid collecting barrel, the core of the electric core is connected with the core connecting part of the core rotating device, the driving connecting part of the core rotating device is directly or indirectly connected with the rotating shaft of the motor, and the injection pipe can extend into the hollow part of the core. When the pivot of motor drives the drive connecting portion that roll up core rotary device and rotate, roll up core connecting portion integrative with the drive connecting portion and rotate thereupon, and then make to connect and drive whole electric core rotation in the book core of rolling up core connecting portion. Under the action of centrifugal force, the liquid in the winding part of the battery cell can be dried or the liquid continuously injected into the winding core can fully soak the whole battery cell. In addition, the invention also provides a spin-drying and infiltration method of the battery core of the cylindrical battery. By using the spin-drying and infiltrating device and the spin-drying and infiltrating method, the moving process of liquid in the battery cell from inside to outside is accelerated through the rotating centrifugal effect, and the effect of accelerating the drying of the battery cell or accelerating the infiltration of the liquid in the battery cell can be achieved by combining the hot air drying or the solvent injection on the inner side and the outer side of the battery cell.
The technical scheme provided by the invention is as follows:
the invention provides a spin-drying and soaking device for a battery core of a cylindrical battery. The electric core of cylindrical battery includes that inside cavity and lateral wall are equipped with the book core of circulation mouth and coil up the porous winding portion on rolling up the core, and the winding portion is including the porous anodal material layer, the porous anodal mass flow body, porous isolation layer, the porous negative pole mass flow body and the porous negative pole material layer of range upon range of setting. The spin-drying and infiltrating device comprises: the liquid collecting cylinder comprises a liquid collecting cylinder body and a liquid collecting cylinder cover, the liquid collecting cylinder body is detachably connected with the liquid collecting cylinder cover, and the liquid collecting cylinder is provided with an injection port and a discharge port; the injection pipe can extend into the hollow part of the winding core of the battery cell placed in the liquid collecting cylinder from the injection port so as to inject gas or liquid into the hollow part of the winding core; roll up core rotary device, this roll up core rotary device set up in collection liquid section of thick bamboo and roll up core rotary device and be equipped with drive connecting portion and roll up core connecting portion, roll up the drive connecting portion of core rotary device and link to each other with the pivot of motor and make roll core rotary device can rotate along with the pivot of motor, roll up core rotary device's roll core connecting portion can be connected with the book core of electric core and make roll core can rotate along with roll core rotary device. Liquid in the winding part of the battery cell can be thrown out or the liquid injected into the winding core of the battery cell can be fully infiltrated into the winding part of the battery cell through the rotating centrifugal action of the battery cell.
The porous positive electrode current collector may be an electron conductive layer having a thickness of 1 to 2000 μm, preferably 0.05 to 1000 μm, with a through-hole structure, the pore diameter of the porous positive electrode current collector may be 0.01 to 2000 μm, preferably 10 to 1000 μm, and the through-hole porosity may be 10 to 90%. The porous positive current collector can be a conductive metal layer, the conductive metal layer is a metal net or a metal wire mesh grid, and meshes can be square, diamond, rectangular or polygonal; or the conductive metal layer is a foam metal net with a through hole structure; alternatively, the conductive metal layer is a porous metal plate or a porous metal foil, and the material of the conductive metal layer may be stainless steel, aluminum, silver, or the like. Or, the porous positive current collector can be carbon fiber conductive cloth or conductive cloth mixed by metal wires and organic fiber wires, the metal wires can be made of aluminum, alloy aluminum, stainless steel or silver, and the organic fiber wires can comprise one or more of natural cotton hemp, terylene, aramid fiber, nylon, polypropylene fiber, polyethylene, polytetrafluoroethylene and the like. Or, the porous positive current collector is a metal conductive layer, a conductive cloth, an inorganic non-metallic material, a porous organic material and the like, the surface of the porous positive current collector is coated with a conductive coating or plated with a metal film, the conductive coating is a mixture of a conductive agent and a binder or the conductive coating is a mixture of a conductive agent, a positive active material and a binder, the mixing mode is bonding, spraying, evaporating or mechanical pressing and the like, the porous organic material comprises natural cotton-flax, terylene, aramid fiber, nylon, polypropylene fiber, polyethylene, polytetrafluoroethylene and the like, the inorganic non-metallic material comprises glass fiber non-woven fabric and ceramic fiber paper, the conductive agent is one or more of carbon black, ketjen black, graphene, carbon nano tube, carbon fiber, amorphous carbon, metal conductive particles, metal conductive fibers and the like, the metal conductive particles or the metal conductive fibers can be made of aluminum, stainless steel, silver and the like, and the binder can be polyvinyl chloride, the surface of the amorphous carbon fibers can be coated with a conductive coating or plated with a metal film, the conductive cloth, the inorganic non-metallic active material can be coated with a porous organic material, the porous organic material and the porous positive active material can be adhered with a mixture of polyvinyl chloride, the porous organic material and the porous organic material, and the porous positive active material can be adhered to form of the porous organic material, and the porous organic material can be adhered to form of the porous positive active material, and the porous positive current collector can be adhered to form of the porous positive current collector, and the porous positive current collector can be adhered to form a porous positive electrode, One or more of polyethylene, polypropylene, polystyrene, polytetrafluoroethylene, polyester terephthalate, polyamide, polyimide, polyether nitrile, polymethyl acrylate, polyvinylidene fluoride, polyurethane, polyacrylonitrile, styrene-butadiene rubber, sodium carboxymethylcellulose, modified polyolefin and the like. Alternatively, the porous positive electrode current collector is a combination of any two or more of the above.
The porous negative current collector may be an electron conductive layer having a thickness of 1 to 2000 μm, preferably 0.05 to 1000 μm, with a through-hole structure, and the porous negative current collector may have a pore diameter of 0.01 to 2000 μm, preferably 10 to 1000 μm, and a through-hole porosity of 10 to 90%. The porous negative current collector can be a conductive metal layer, the conductive metal layer can be a metal net or a metal wire mesh grid, and meshes can be square, diamond, rectangular or other polygons; alternatively, the conductive metal layer may be a porous foam metal layer having a porous structure; alternatively, the conductive metal layer may be a porous metal plate or a porous metal foil, and the material of the conductive metal layer may be stainless steel, nickel, titanium, tin, copper, tin-plated copper, nickel-plated copper, or the like. Or the porous negative current collector can be carbon fiber conductive cloth or conductive cloth mixed by metal wires and organic fiber wires, and the metal wires can be made of stainless steel, nickel, titanium, tin, copper, tin-plated copper or nickel-plated copper and the like; the organic fiber yarn comprises one or more of natural cotton, polyester, aramid, nylon, polypropylene, polyethylene and polytetrafluoroethylene. Or, the porous negative current collector may be a metal conductive layer with a conductive coating or a metal film coated thereon, a conductive cloth, an inorganic non-metallic material, a porous organic material, the conductive coating may be a composite of a conductive agent and a binder or a conductive agent, a negative active material and a binder, the composite mode may be bonding, spraying, evaporation, mechanical pressing, or the like, the porous organic material may include natural cotton, polyester, aramid, nylon, polypropylene, polyethylene, polytetrafluoroethylene, or the like, the inorganic non-metallic material may include glass fiber non-woven fabric, ceramic fiber paper, or the like, the conductive film may be stainless steel, nickel, titanium, tin, copper, tin-plated copper, nickel-plated copper, or the like, the conductive agent may be one or more of carbon black, ketjen black, graphene, carbon nanotubes, carbon fibers, amorphous carbon, metal conductive particles, and metal conductive fibers, the metal conductive particles or the metal conductive fibers can be made of stainless steel, nickel, titanium, tin, copper, tin-plated copper or nickel-plated copper and the like, and the binder can be one or more of polyvinyl chloride, polyethylene, polypropylene, polystyrene, polytetrafluoroethylene, polyterephthalate, polyamide, polyimide, polyether nitrile, polymethyl acrylate, polyvinylidene fluoride, polyurethane, polyacrylonitrile, styrene-butadiene rubber, sodium carboxymethylcellulose and modified polyolefin. Alternatively, the porous negative electrode current collector may be a combination of any two or more of the above.
The material of the porous isolating layer can be an electronic non-conducting porous polymer material; or the material of the porous isolating layer can be a porous material compounded by an electronic non-conductive inorganic non-metallic material and an organic polymer; or the porous isolating layer can be made of a gel polymer electrolyte composite material formed by compounding an electronic non-conducting polymer matrix, a liquid organic plasticizer and lithium salt; alternatively, the material of the porous separation layer may be an electrolyte or a polymer colloid material impregnated with ionic conduction in the pores of a porous polymer material which is not electronically conductive or in the pores of a porous material in which an inorganic nonmetallic material and an organic polymer are compounded, or the like.
The porous electrode material layer can be a dry or semi-dry porous electrode material layer, and gaps exist among the electrode active conductive particles in the dry or semi-dry state, so that the electrode active conductive particles can be formedA porous structure for passage of fluid. For example, in a lithium slurry battery, the packed porosity of the non-adhesively secured positive active conductive particles and/or the non-adhesively secured negative active conductive particles can be greater than 5% and less than 60%. In the case of being immersed in the electrolytic solution, the non-adhesively fixed positive electrode active conductive particles and/or the non-adhesively fixed negative electrode active conductive particles can move in the electrolytic solution and form a positive electrode slurry and/or a negative electrode slurry, respectively. The mass ratio of the positive electrode active conductive particles to the positive electrode slurry may be 10% to 90%, preferably 15% to 80%, and the mass ratio of the negative electrode active conductive particles to the negative electrode slurry may be 10% to 90%, preferably 15% to 80%. The average particle size of the positive active conductive particles can be 0.05-500 mu m, and the mass ratio of the positive active material to the conductive agent can be 20-98: 80-2; the average particle size of the negative active conductive particles can be 0.05-500 μm, and the mass ratio of the negative active material to the conductive agent can be 20-98: 80-2. The positive active material may be lithium iron phosphate, lithium cobalt oxide, lithium nickel oxide, lithium manganese oxide, lithium nickel cobalt aluminum oxide, lithium vanadium oxide, lithium manganese-based oxide (lithium manganese chromium oxide, lithium manganese cobalt oxide, lithium manganese nickel oxide, lithium manganese copper oxide), V [ LiM ] or]O4(M ═ nickel or cobalt), polyatomic anion positive electrode material (VOPO)4NASICON, silicates, titanates, sulfates, borates, R-Li3Fe2(PO4)3、Li3FeV(PO4)3、TiNb(PO4)3、LiFeNb(PO4)3) Iron compounds, molybdenum oxides, and the like. The cathode active material can be carbon-based cathode material, nitride, silicon and silicide, tin-based oxide, selenide, alloy cathode material, titanium oxide, transition metal oxide, phosphide or metallic lithium and the like, the carbon-based cathode material can comprise one or more of graphite, mesophase carbon microsphere, graphitized carbon fiber, amorphous carbon material, soft carbon, hard carbon, fullerene, carbon nano tube, carbon-cobalt composite, carbon-tin composite, carbon-silicon composite and the like, and the alloy cathode material can comprise tin-based alloy, silicon-based alloy, antimony-based alloy and germanium-based alloyOne or more of aluminum-based alloy, lead-based alloy and the like, and the transition metal oxide can comprise one or more of cobalt oxide, nickel oxide, copper oxide, iron oxide, chromium oxide, manganese oxide and the like. The conductive agent can be one or more of carbon black, ketjen black, graphene, carbon nanotubes, carbon fibers, amorphous carbon, metal conductive particles and metal conductive fibers. The material of the metal conductive particles or fibers can be aluminum, stainless steel, silver or the like.
The liquid collecting barrel of the spin-drying and infiltration device may be made of electrolyte resistant materials such as stainless steel, aluminum, polytetrafluoroethylene, polyethylene, polypropylene, polyethylene terephthalate, epoxy resin, unsaturated polyester, composite fiberboard, etc. The liquid collecting barrel cover can be located at the end of the liquid collecting barrel body, or the liquid collecting barrel cover and the liquid collecting barrel body can be separated from the middle part of the liquid collecting barrel body, or the liquid collecting barrel cover can be located on the side wall of the liquid collecting barrel body, and the liquid collecting barrel cover and the liquid collecting barrel body can be connected in detachable modes such as screw connection and buckle connection, so that the battery cell can be conveniently placed in the liquid collecting barrel body and taken out from the liquid collecting barrel body. Preferably, the position of the injection opening of the liquid collecting barrel corresponds to the position of the hollow part of the winding core of the battery cell placed in the liquid collecting barrel, so that the injection pipe can vertically extend into the hollow part of the winding core through the injection opening. The injection pipe can be a flexible pipe or a rigid pipe, one end of the injection pipe can extend into the hollow part of the winding core, and the other end of the injection pipe can be connected with a liquid storage device, a gas storage device and the like. Preferably, the bottom surface of the liquid collecting barrel can be an inclined surface, a curved surface, a convex surface or the like, and the discharge port can be arranged at the lowest part of the bottom surface, so that the liquid can be rapidly and sufficiently discharged.
The core rotation device may be made of electrolyte resistant materials such as stainless steel, aluminum, teflon polyethylene, polypropylene, epoxy unsaturated polyester, polyethylene terephthalate, ethylene propylene diene monomer, viton, composite fiberboard, etc. Roll up core rotary device can integrated into one piece or can form by the equipment of different parts, and the drive connecting portion that rolls up core rotary device rotates along with the pivot of motor, and then drives the core connecting portion that rolls up core rotary device and rotate together. The central axis of the driving connecting portion coincides with the central axis of the core connecting portion, and the central axis of the core connecting portion coincides with the central axis of the core of the battery cell, so that the battery cell can rotate around the central axis of the core, namely, the central axis of the battery cell.
According to one embodiment of the invention, the winding core rotating device is a connecting cylinder with at least one hollow end, wherein the driving connecting part is positioned at one end of the connecting cylinder, and the rotating shaft of the motor can be inserted into the driving connecting part and connected and fixed in a threaded connection, bonding, interference fit or clamping manner; roll up core connecting portion and be located the other end of connecting cylinder, the core of rolling up of electric core can insert in the core connecting portion of rolling up or roll up core connecting portion and can insert in the core of rolling up of electric core and connect through the mode of threaded connection, interference fit or joint. That is, one end of the connecting cylinder is hollow, the end part can be sleeved on the rotating shaft of the motor for fixed connection, and the size and the shape of the end part are matched with those of the rotating shaft of the motor; the other end of the connecting cylinder can be hollow or a solid cylinder, when the end part is hollow, the end part can be sleeved on a winding core of the battery core for connection, when the end part is the solid cylinder, the end part can be inserted into the hollow part of the winding core for connection, and the size and the shape of the end part are matched with those of the winding core of the battery core. Thus, the two ends of the connector barrel may be of different sizes and shapes. When two ends of the connecting cylinder are of hollow structures, the middle of the connecting cylinder can be of a solid structure, so that the strength of the connecting cylinder can be improved.
According to another embodiment of the invention, the winding core rotating device is provided with a preferably disc-shaped main body, the driving connecting part is positioned at one side of the main body and the winding core connecting part is positioned at the other side of the main body, wherein the driving connecting part can be cylindrical, and a rotating shaft of the motor can be inserted into the driving connecting part and is connected and fixed in a threaded connection, bonding, interference fit or clamping manner; roll up core connecting portion and can be the tube-shape, roll up core connecting portion and can be column or roll up core connecting portion and can be fixture (or anchor clamps) that can remove, the core of electric core can insert in rolling up core connecting portion or roll up core connecting portion and can insert in the core of electric core and connect through threaded connection, interference fit, the mode of pressing from both sides tight or joint. Through set up discoid main part on rolling up core rotary device, can improve the structural strength who rolls up core rotary device, in addition, can be convenient for set up comparatively complicated fixture and other parts etc. in discoid main part. The movable fixture (i.e., adjustable fixture) clamping mechanism may be a wedge, thread, circular eccentric, or the like clamping mechanism. For example, can also set up the supporting part in discoid main part, the supporting part lies in the same one side of discoid main part with rolling up core connecting portion, and the supporting part is cyclic annular, strip or cubic, and the supporting part is used for supporting the winding part of connecting in the electric core of rolling up core rotary device to prevent to rotate at electric core and take place axial displacement between the winding part of in-process electric core and the book core of electric core. In other words, the support portion is provided on the side of the main body on which the core connecting portion is provided, and when the core connecting portion is connected to the core, the support portion functions to support the winding portion of the electric core. The support may be integrally formed with the disc-shaped body, or the support may be fixedly coupled to the disc-shaped body.
According to the invention, the rotating shaft of the motor can drive one winding core rotating device to rotate by directly inserting the cylindrical driving connecting part of the winding core rotating device, and in addition, the rotating shaft of the motor can also drive one winding core rotating device to rotate or simultaneously drive a plurality of winding core rotating devices to rotate by a transmission mechanism. The transmission mechanism may be a gear transmission mechanism or a belt transmission mechanism, etc., and accordingly, the driving connection portion may be a gear or a pulley, etc. Under the condition that the motor drives a plurality of roll core rotating devices simultaneously, a plurality of roll core devices can be arranged in one liquid collecting barrel simultaneously, and preferably, the liquid collecting barrel can be of a multi-lattice structure provided with partition plates.
Spin-dry and soak device still can include stop device, stop device sets up on liquid collection section of thick bamboo, stop device sets up respectively in liquid collection section of thick bamboo's both ends with rolling up a core rotary device, wherein, stop device includes the bearing, bearing frame and the spacing section of thick bamboo of cavity, the bearing passes through bearing frame fixed connection in liquid collection section of thick bamboo, the outer wall of the spacing section of thick bamboo of cavity closely cooperates with the inner wall of bearing, the one end of the spacing section of thick bamboo of cavity can overlap on the book core of electric core or can insert in the book core of electric core, thereby can restrict electric core when electric core rotates and take place the displacement along the radial and/or axial of electric core. Specifically speaking, when the one end of the core of rolling up of electric core is fixed through rolling up core connecting portion, take place to rock when electric core rotates for the other end that prevents to roll up the core, consequently set up stop device. Stop device and book core rotary device set up respectively at the both ends of collection liquid section of thick bamboo to can keep and spacing the book core portion of electric core from the both ends of electric core. The bearing seat of the limiting device can be fixed on the liquid collecting barrel in a bonding mode, a threaded connection mode and the like, or the bearing seat can be integrally formed with the liquid collecting barrel. The bearing is fixed in the bearing frame, and the inner wall of bearing is together fixed with the outer wall of the spacing section of thick bamboo of cavity, and like this, when electric core rotated, the spacing section of thick bamboo of cavity can rotate along with electric core together, has avoided wearing and tearing and energy consumption that the spacing section of thick bamboo of fixed cavity caused. The hollow part of the hollow limiting cylinder of the limiting device can allow the injection pipe to be inserted, and one end of the hollow limiting cylinder can be inserted into the hollow part of the winding core or sleeved on the outer wall of the winding core so as to limit the radial movement of the battery core along the battery core. Preferably, the outer wall of the hollow limiting cylinder is of a stepped column structure or the inner wall of the hollow limiting cylinder is of a stepped hole structure, or the outer wall or the inner part of the hollow limiting cylinder is provided with a protruding part, and the stepped structure and the protruding part both play a role in axial limiting, so that the battery cell can be limited to move axially along the battery cell while the battery cell is limited to move radially along the battery cell.
The spin-drying and infiltrating device further comprises a holding barrel, the holding barrel is provided with a cylindrical side wall, through holes or grooves are formed in the side wall, and the battery cell can be placed in the holding barrel, so that the shape of the battery cell can be maintained in the rotation process of the battery cell. Through holes or grooves in the side walls of the retention cartridge may allow fluid within the electrical core to drain. The material of the holding cylinder can be a flexible material or a rigid material resistant to the electrolyte, for example, the material of the holding cylinder can be stainless steel, aluminum, polytetrafluoroethylene, polyethylene, polypropylene, composite fiber board, polyethylene terephthalate, ethylene propylene diene monomer, fluororubber, polypropylene polyester non-woven fabric, and the like. When the material of the holding cylinder is a flexible material, the outer side of the battery cell may be covered with a long material to form a cylindrical shape, and when the material of the holding cylinder is a rigid material, the inner diameter of the holding cylinder is substantially equal to the outer diameter of the winding portion of the battery cell. When the material of the retention cartridge is a rigid material, the retention cartridge may include only the side wall or may include the side wall and one end surface. Preferably, the holding cylinder is fixed relative to the winding core or the holding cylinder is fixed relative to the winding core rotating device, so that the holding cylinder can rotate together with the battery core. For example, grooves or through-holes are provided on the end face of the holding cylinder and corresponding projections are provided on the winding core or the winding core rotating device so that the projections can be inserted into the grooves or through-holes, so that the holding cylinder rotates together with the winding core or the winding core rotating device.
The invention also provides a spin-drying and infiltrating method of the battery core of the cylindrical battery, which comprises a liquid spin-drying step and a liquid infiltrating step, wherein the liquid spin-drying step and/or the liquid infiltrating step are/is operated by using the spin-drying and infiltrating device. That is to say, the spin-drying and infiltrating device can be used for spin-drying the battery cell and/or infiltrating the battery cell. Before carrying out spin-drying and infiltration of electric core, the drive connecting portion of the core rotary device of spin-drying and infiltration device links to each other with the drive arrangement of motor for example, so when carrying out electric core spin-drying and infiltration, only need to link to each other with the core of the core connecting portion of the core rotary device of spin-drying and infiltration device and electric core. In the spin-drying process of the battery cell, the liquid in the battery cell can be thrown out only by the centrifugal force, and then the battery cell is taken out so as to simultaneously dry a plurality of battery cells in the drying device, so that the drying time can be greatly reduced and the energy consumption in the drying process can be reduced; in addition, in the spin-drying process of the battery cell, heated gas can be injected into the hollow part of the core of the battery cell simultaneously, so that the drying of the battery cell can be simply, conveniently and quickly completed in the spin-drying and soaking device. In the soaking process of the battery core, the soaked liquid can be electrolyte, cleaning solution and the like, and the liquid is injected into the hollow part of the core of the battery core and is diffused outwards along the radial direction from the core under the action of centrifugal force, so that the electrolyte soaking of the battery core or the cleaning of the battery core is realized.
In the liquid spin-drying step: the electric core is arranged in a liquid collecting barrel of the spin-drying and soaking device, a winding core of the electric core is connected to a winding core connecting part of a winding core rotating device, a discharge port of the liquid collecting barrel is opened, and the rotating shaft, the winding core rotating device and the electric core are rotated through the rotation of the motor, so that liquid in a winding part of the electric core is thrown out under the action of centrifugal force and is discharged from the discharge port; or, arrange the electricity core in the collection liquid section of thick bamboo of spin-drying and infiltration device, connect the core of rolling up of electricity core in the core connecting portion that rolls up of rolling up core rotary device, open the discharge port that will collect the liquid section of thick bamboo, and will pour into the pipe into the hollow part that rolls up the core via the filling opening that collects the liquid section of thick bamboo, make pivot, roll up core rotary device and electricity core rotation and pour into the heated gas into to the hollow part that rolls up the core through the injection pipe through the rotation of motor to make the liquid in the winding portion of electricity core and the heated gas throw away under the effect of centrifugal force and discharge from the discharge port. Wherein, the rotating speed of the core rotating device can be 102～104The rpm is high, and the temperature of the heating gas can be 40-120 ℃. The gas may be one or more of nitrogen, air, a flame retardant gas (e.g., sulfur hexafluoride), and an inert gas (e.g., helium, neon, argon, krypton, xenon).
In the liquid immersion step: insert the hollow part of rolling up the core with the injection pipe via the filling opening of collection liquid section of thick bamboo, through the injection pipe to rolling up the core in pour into liquid into, make pivot, roll up core rotary device and electric core rotation through the rotation of motor simultaneously to make the liquid that pours into the core fully soak the winding part of electric core under the effect of centrifugal force. The liquid can be electrolyte or cleaning liquid. The cleaning solution may be carbonates, carboxylates, ethers, nitriles, organic acid bases, etc., and for example, the cleaning solution may be ethylene carbonate, dimethyl carbonate, ethyl acetate, tetrahydrofuran, 1, 2-dimethoxyethane, acetonitrile, carboxyacetic acid, triethylamine, etc.
It should be noted that the directional terms upper, lower, left, right, top, bottom, etc. in the present invention are used for clarity only and are not meant to be limiting.
The invention has the advantages that:
1) according to the spin-drying and infiltration device, the porous structure of the winding type lithium slurry battery is utilized, on one hand, the solvent in the winding part of the battery cell is thrown out under the centrifugal action of the rotation of the battery cell, and is matched with the hot air introduced into the interior of the winding core of the battery cell and the outer side of the battery cell for drying, the gasification process of the solvent on the outer surface of the battery cell can be accelerated through the rotation of the battery cell, and the drying acceleration effect is achieved; on the other hand, can roll up the core to inject into the electrolyte to the electric core, make electrolyte with higher speed from rolling up the core inside to the removal of the winding portion surface of electric core through electric core pivoted centrifugal action, play the effect of soakage with higher speed.
2) The spin-drying and infiltrating device can spin-dry and infiltrate the whole battery cell, so that the process of disassembling and assembling the winding part from the battery cell is omitted, and the production efficiency is improved.
3) The invention can lead the circumferential stress of the winding part of the battery cell to be uniform under the centrifugal action, thereby avoiding the phenomena of irregular deformation of the battery cell and uneven thickness of the electrode plate in the rotating process.
4) The spin-drying and infiltrating device is compact in structure, high in integration level and small in occupied area, and the spin-drying and infiltrating method is flexible and controllable, so that the device and the method are easy to use in batch production.
Drawings
FIG. 1 is a schematic cross-sectional view of a spin-drying and infiltration apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a spin-drying and infiltration apparatus according to another embodiment of the present invention;
FIG. 3 is a perspective view of a spin-drying and infiltration apparatus according to yet another embodiment of the present invention;
FIG. 4 is a schematic view of the connection between the core rotating device and the core and the rotating shaft of the spin-drying and soaking device according to an embodiment of the present invention;
FIGS. 5(a) and 5(b) are schematic views illustrating the connection between a core rotating device and a core and a rotating shaft of a spin-drying and soaking device according to another embodiment of the present invention, wherein FIG. 5(a) is an assembled view and FIG. 5(b) is an exploded view;
FIGS. 6(a) and 6(b) are schematic views showing the connection between a core rotating device and a core and a rotating shaft of a spin-drying and soaking device according to another embodiment of the present invention, wherein FIG. 6(a) is an assembled view, and FIG. 6(b) is an exploded view;
FIGS. 7(a) and 7(b) are a perspective view and a cross-sectional view of a position limiting device of a spin-drying and infiltration apparatus according to an embodiment of the present invention;
fig. 8(a) and 8(b) are a perspective view and a cross-sectional view of a position limiting device of a spin-drying and soaking device according to another embodiment of the present invention.
List of reference numerals
1-liquid collecting tube
101-discharge opening
102-injection port
2-core rotating device
201-core connection part
201 a-movable jaw
201 b-Rib
202-drive connection
202 a-fastening screw
202 b-Belt Pulley
203-main body
3-injection pipe
4-holding cylinder
5-limiting device
501-bearing
502-bearing seat
502 a-fixed part on bearing
502 b-lower bearing fixture
502 c-bearing seat fixing piece
502 d-Block-shaped body
503-hollow spacing cylinder
503 a-fixed part
503 b-Limit portion
6-support part
701-Belt Pulley
702-leather belt
8-electric core
801-winding core
802-winding part
9-rotating shaft
10-Rotary seal
Detailed Description
The invention will be further illustrated by the following examples in conjunction with the accompanying drawings.
FIG. 1 is a schematic cross-sectional view of a spin-drying and infiltration apparatus according to an embodiment of the present invention. In the embodiment shown in fig. 1, the spin-drying and infiltration apparatus comprises: the device comprises a liquid collecting cylinder 1, a winding core rotating device 2, an injection pipe 3 and a holding cylinder 4. The liquid collecting tube 1 includes a liquid collecting tube body and a liquid collecting tube cover, a discharge port 101 is provided at the lowest position of the inclined bottom surface of the liquid collecting tube body, and an injection port 102 is provided at the center position of the liquid collecting tube cover. The liquid collecting barrel is cylindrical, the liquid collecting barrel cover is positioned at the upper end part of the liquid collecting barrel, and the liquid collecting barrel cover is connected to the liquid collecting barrel in a threaded connection mode. The holding cylinder 4 is a rigid cylinder, the holding cylinder 4 includes an upper end surface and a side wall having a through hole, and the inner diameter of the holding cylinder 4 is substantially the same as the outer diameter of the battery cell 8. Two semicircular grooves are formed in the upper end surface of the holding cylinder 4, the upper end portion of the winding core 801 is formed into two semicircular portions by cutting two axial cuts in the upper end portion of the winding core 801, and the two semicircular portions in the upper end portion of the winding core 801 can be inserted into the two semicircular grooves in the upper end surface of the holding cylinder 4, so that the holding cylinder 4 can be rotated together by the winding core 801 while the shape of the winding core is held. Roll up core rotary device 2 and set up the position that is close to the bottom of collection liquid section of thick bamboo 1 in collection liquid section of thick bamboo 1, roll up core rotary device 2 and include roll core connecting portion 201 and drive connecting portion 202, roll core connecting portion 201 and connect in the lower tip of the core 801 of electric core with the detachable mode, drive connecting portion 202 fixed connection is in the pivot 9 of motor, seals through rotary seal 10 between the bottom surface of pivot 9 and collection liquid section of thick bamboo body. The central axis of the rotating shaft 9, the central axis of the driving connection part 202, and the central axis of the winding core connection part 201 of the motor coincide with the central axis of the battery cell 8. One end of injection pipe 3 extends into the hollow portion of winding core 801 through injection port 102, a space between injection pipe 3 and injection port 102 is sealed by a seal ring, and the other end of injection pipe 3 is connected to a liquid storage device and a gas storage device.
Taking the spin-drying process of the battery cell as an example, firstly, the liquid collecting barrel cover is taken down from the liquid collecting barrel body, the battery cell 8 (for example, the solid content of the electrode material layer is 50%) with higher moisture in the electrode material layer is firstly placed in the holding barrel 4 and is relatively fixed, then the battery cell 8 covering the holding barrel 4 is placed in the liquid collecting barrel 1, and the lower end part of the winding core 801 of the battery cell is connected to the winding core connecting part 201 of the winding core rotating device; then, the injection pipe 3 is inserted into the hollow part of the winding core 801 through the injection port 102, and the liquid collecting cylinder cover is connected to the liquid collecting cylinder body; next, the motor is started, so that the rotating shaft 9 of the motor drives the driving connection part 202 and the winding core connection part 201 to rotate and further drives the electric core 8 to rotate, heated gas is injected into the hollow part of the winding core 801 by using the injection pipe 3 while the electric core 8 rotates, and moisture and gas thrown out of the electric core 8 are discharged through the opened discharge port 101; finally, after the battery cell 8 is dried, the rotation of the motor is stopped, the liquid collecting barrel cover is removed from the liquid collecting barrel body, the injection pipe 3 is removed from the hollow part of the winding core 801, the battery cell 8 is taken out of the liquid collecting barrel 1, and the battery cell 8 is taken out of the holding barrel 4.
FIG. 2 is a schematic cross-sectional view of a spin-drying and infiltration apparatus according to another embodiment of the present invention. In the embodiment shown in fig. 2, the spin-drying and infiltration apparatus comprises: the device comprises a liquid collecting cylinder 1, a winding core rotating device 2, an injection pipe 3, a holding cylinder 4 and a limiting device 5. The liquid collecting barrel 1 comprises a liquid collecting barrel body and a liquid collecting barrel cover, wherein a discharge port 101 is arranged at the lowest part of the convex bottom surface of the liquid collecting barrel body, and an injection port 102 is arranged at the central position of the liquid collecting barrel cover. The liquid collecting barrel is cylindrical, the liquid collecting barrel cover is located at the upper end of the liquid collecting barrel, and the liquid collecting barrel cover is connected to the liquid collecting barrel in a buckling connection mode. The winding core rotating device 2 is arranged at a position, close to the bottom of the liquid collecting barrel 1, in the liquid collecting barrel 1, the winding core rotating device 2 comprises a winding core connecting portion 201 and a driving connecting portion 202, the winding core connecting portion 201 is connected to the lower end portion of a winding core 801 of an electric core in a detachable mode, and the driving connecting portion 202 is fixedly connected to a rotating shaft 9 of a motor. The central axis of the rotating shaft 9, the central axis of the driving connection part 202, and the central axis of the winding core connection part 201 of the motor coincide with the central axis of the battery cell 8. The holding cylinder 4 is a rigid cylinder, the holding cylinder 4 includes a lower end surface and a side wall having a groove, and the inner diameter of the holding cylinder 4 is substantially the same as the outer diameter of the battery cell 8. A plurality of through holes are formed in the lower end surface of the holding cylinder 4, a plurality of protrusions are formed on the winding core rotating device 2, and the protrusions can be inserted into the through holes respectively, so that the holding cylinder 4 can be driven to rotate together by the winding core rotating device 2. Limiting device 5 includes bearing 501, bearing frame 502 and the spacing section of thick bamboo 503 of cavity, and bearing 501 passes through bearing frame 502 fixed connection in album liquid cover, and the outer wall of the spacing section of thick bamboo 503 of cavity closely cooperates with the inner wall of bearing 501 to make the well kenozooecium and the injection mouth 102 fluid intercommunication of the spacing section of thick bamboo 503 of cavity, and the lower extreme of the spacing section of thick bamboo 503 of cavity can overlap on the book core 801 of electric core and be used for preventing that electric core 8 from removing along electric core radial X and electric core axial Y. One end of the injection pipe 3 extends into the hollow portion of the winding core 801 through the hollow portion of the hollow stopper cylinder 503, and the other end of the injection pipe 3 is connected to the liquid storage device and the gas storage device.
Taking the electrolyte infiltration process of the battery core as an example, firstly, taking the liquid collection barrel cover provided with the limiting device 5 from the liquid collection barrel body, firstly placing the battery core 8 which needs to be infiltrated with the electrolyte into the holding barrel 4, then placing the battery core 8 coated with the holding barrel 4 into the liquid collection barrel 1, connecting the lower end part of the winding core 801 of the battery core to the winding core connecting part 201 of the winding core rotating device, and respectively inserting the plurality of protrusions of the winding core rotating device into the plurality of through holes on the lower end surface of the holding barrel 4; then, the injection pipe 3 extends into the hollow part of the winding core 801 through the hollow part of the hollow limiting cylinder 503, and the liquid collecting cylinder cover is connected with the liquid collecting cylinder body; next, the motor is started, so that the rotating shaft 9 of the motor drives the driving connection part 202 and the winding core connection part 201 to rotate and further drives the electric core 8 to rotate, and the electrolyte is injected into the hollow part of the winding core 801 by using the injection pipe 3 while the electric core 8 rotates; finally, after the battery cell is soaked, the rotation of the motor is stopped, the liquid collecting barrel cover is taken down from the liquid collecting barrel body, the injection pipe 3 is removed from the hollow part of the winding core 801, the soaked battery cell 8 is taken out from the liquid collecting barrel 1, and the battery cell 8 is taken out from the holding barrel 4.
Fig. 3 is a perspective view of a spin-drying and infiltration apparatus according to another embodiment of the present invention. In the embodiment shown in fig. 3, the case that the transmission mechanism is driven by the rotating shaft 9 of the motor, so as to simultaneously drive the plurality of battery cells 8 to rotate is mainly shown, and the liquid collecting cylinder and the injection pipe are omitted in the figure. As shown in the embodiment of the figure, the transmission mechanism includes a plurality of belt pulleys 701 fixedly connected to the rotating shaft 9 of the motor and a plurality of belts 702 corresponding to the plurality of belt pulleys, the driving connection portion of the winding core rotating device is the belt pulley 202b, the belt 702 of the transmission mechanism connects the belt pulley 701 of the transmission mechanism and the belt pulley 202b of the winding core rotating device, and the winding core connection portion of the winding core rotating device is connected to the winding core of the electric core 8 in a sleeved or inserted manner. When the rotating shaft 9 of the motor rotates, the plurality of belt pulleys 701 fixed on the rotating shaft drive the belt pulleys 202b of the plurality of winding core rotating devices to rotate, so that the plurality of battery cores 8 can be driven to rotate through the transmission mechanism.
Fig. 4 is a schematic view of the connection between the core rotating device, the core and the rotating shaft of the spin-drying and soaking device according to an embodiment of the present invention. In the embodiment shown in fig. 4, the core rotation device 2 includes a disk-shaped main body 203, a core connection portion located on the upper side of the main body 203, and a drive connection portion 202 located on the lower side of the main body 203. The winding core connecting part is a manual three-jaw chuck, and the three movable jaws 201a are controlled to move along the radial direction of the main body 203 through a gear transmission mechanism of the chuck, so that the winding core 801 is fixed. The drive connection portion 202 is cylindrical, a fastening screw 202a movable in the radial direction of the cylinder is provided on the side wall of the cylinder, and the drive connection portion 202 and the rotating shaft 9 of the motor are fixedly connected by fastening the fastening screw 202a when the rotating shaft 9 of the motor is inserted into the cylinder.
Fig. 5(a) and 5(b) are schematic views illustrating connection between a core rotating device and a core and a rotating shaft of a spin-drying and soaking device according to another embodiment of the present invention, wherein fig. 5(a) is an assembly view, and fig. 5(b) is an exploded view. In the embodiment shown in fig. 5(a) and 5(b), the core rotating device 2 is a joint cylinder, the core connecting portion 201 is located at the upper end of the joint cylinder, and the drive connecting portion 202 is located at the lower end of the joint cylinder. Roll up core connecting portion 201 and be solid cylinder, be equipped with two ribs 201b on the cylindrical lateral wall, be equipped with two slots simultaneously at the lower tip of rolling up core 801, thereby two ribs 201b can insert two slots in thereby realize that roll core 801 and roll core connecting portion 201's joint is fixed. The driving connection portion 202 is a cylinder, and the inner diameter of the cylinder 202 is sized to enable the rotating shaft 9 of the motor to be inserted into the cylinder to form an interference fit, so that the rotating shaft 9 of the motor can be fixedly connected with the cylinder.
Fig. 6(a) and 6(b) are schematic views showing the connection between the core rotating device and the core and the rotating shaft of the spin-drying and soaking device according to another embodiment of the present invention, wherein fig. 6(a) is an assembly view, and fig. 6(b) is an exploded view. In the embodiment shown in fig. 6(a) and 6(b), the core rotation device 2 includes a disc-shaped main body 203, a support portion 6 located on the upper side of the main body 203, a core connection portion 201 located on the upper side of the main body 203, and a drive connection portion 202 located on the lower side of the main body 203. The winding core connecting part 201 is a cylinder provided with an internal thread, and the lower end part of the winding core 801 is provided with an external thread, so that the lower end part of the winding core 801 can be screwed into the cylinder for threaded connection. The support portion 6 is a torus that is disposed around the winding core attachment portion 201, and the height of the torus is set so that the winding portion 802 is just placed on the support portion 6 when the winding core 801 is screwed into the winding core attachment portion 201. The driving connection part 202 is a cylinder, the inner diameter of the cylinder is substantially the same as the outer diameter of the rotating shaft 9 of the motor, and the rotating shaft 9 inserted into the cylinder is fixedly connected with the cylinder by gluing.
Fig. 7(a) and 7(b) are a perspective view and a cross-sectional view of a limiting device of a spin-drying and soaking device according to an embodiment of the present invention. The limiting device comprises a bearing, a bearing seat and a hollow limiting cylinder. In the embodiment shown in fig. 7(a) and 7(b), the bearing housing includes a bearing upper fixture 502a, a bearing lower fixture 502b, and a bearing housing fixture 502 c. The outer wall of the bearing upper fixture 502a is provided with external threads and a through hole is centrally provided. The bearing lower fixture 502b has a stepped column shape and is provided with a stepped hole therein, and a smaller column of the stepped column may be inserted into the inlet 102 of the cartridge and fixed from the inside of the cartridge 1 by the bearing housing fixture 502c, thereby fixing the bearing housing to the cartridge 1. The bearing 501 may be seated in a larger through-hole in the stepped hole and an inner wall of the through-hole near an upper end of the through-hole may be provided with an internal thread, and the fixing of the bearing 501 may be achieved by screwing the bearing upper fixture 502a provided with the external thread with the internal thread of the through-hole. The hollow limiting cylinder comprises a fixing part 503a and a limiting part 503b, the fixing part 503a is a cylinder with a smaller inner diameter and outer diameter, and the outer wall of the fixing part 503a can be in interference fit with the inner wall of the bearing 501 so as to fixedly connect the hollow limiting cylinder with the bearing 501. Spacing portion 503b is the drum that has great internal diameter and external diameter, and spacing portion 503b can cup joint on rolling up the core to avoid rolling up core along electric core axial and electric core radial movement.
Fig. 8(a) and 8(b) are a perspective view and a cross-sectional view of a position limiting device of a spin-drying and soaking device according to another embodiment of the present invention. The limiting device comprises a bearing, a bearing seat and a hollow limiting cylinder. In the embodiment shown in fig. 8(a) and 8(b), the bearing housing is a block-shaped body 502d provided with a through hole, and in the case where the through hole of the block-shaped body 502d corresponds to the position of the inlet 102 of the liquid collection tube, the block-shaped body 502d may be connected to the liquid collection tube 1 by means of screw fastening. The block 502d is a separate structure, and the bearing 501 can be fixed to the bearing housing by engaging the bearing 501 with the block 502 d. The hollow limiting cylinder 503 comprises a fixing portion 503a and a limiting portion 503b, the fixing portion 503a is a cylinder with a larger outer diameter, and the outer wall of the fixing portion 503a can be in interference fit with the inner wall of the bearing so as to fixedly connect the hollow limiting cylinder with the bearing 501. Spacing portion 503b is the drum that has less external diameter, and spacing portion 503b can insert in the well kenozooecium of rolling up the core to avoid rolling up core along electric core axial and electric core radial movement.
The specific embodiments of the present invention are not intended to be limiting of the invention. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments, using the methods and techniques disclosed above, without departing from the scope of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (10)
1. The utility model provides a device that spin-dries and soaks for cylindrical battery's electric core, electric core includes that inside cavity and lateral wall are equipped with the book core of circulation mouth and convolute roll up porous winding part on the core, winding part is including porous anodal material layer, the porous anodal mass flow body, porous isolation layer, the porous negative current collector and the porous negative material layer of range upon range of setting, its characterized in that, spin-dry and soak the device and include: the liquid collecting barrel comprises a liquid collecting barrel body and a liquid collecting barrel cover, the liquid collecting barrel body is detachably connected with the liquid collecting barrel cover, and an injection port and a discharge port are formed in the liquid collecting barrel; the injection pipe can extend into the hollow part of the winding core of the battery core placed in the liquid collecting barrel from the injection port so as to inject gas or liquid into the hollow part of the winding core; roll up core rotary device, roll up core rotary device set up in the collection liquid section of thick bamboo and roll up core rotary device and be equipped with drive connecting portion and roll up core connecting portion, roll up core rotary device's drive connecting portion and the pivot of motor link to each other make roll up core rotary device can along with the pivot of motor rotates, roll up core rotary device's roll core connecting portion can with the core connection of electric core makes roll up core can along with roll up core rotary device rotates, the central axis of drive connecting portion with the central axis coincidence of roll core connecting portion of book core, roll up the central axis of core connecting portion with the central axis coincidence of the core of electric core makes electric core can center on the central axis of roll core rotates and the winding portion of electric core is evenly unanimous in the peripheral atress under the centrifugal action, through the pivoted centrifugal action of electric core can with liquid in the winding portion of electric core is thrown away or is so that pour into the book core of electric core The winding part of the battery cell is fully soaked by the liquid in the liquid.
2. The spin-drying and soaking device according to claim 1, wherein the winding core rotating device is a connecting cylinder with at least one hollow end, the driving connecting part is located at one end of the connecting cylinder, and a rotating shaft of the motor can be inserted into the driving connecting part and is fixedly connected in a threaded connection mode, a bonding mode, an interference fit mode or a clamping mode; roll up core connecting portion and be located the other end of connecting cylinder, the book core of electric core can insert in the core connecting portion perhaps roll up core connecting portion and can insert in the book core of electric core and connect through the mode of threaded connection, interference fit or joint.
3. The spin and soak apparatus of claim 1, wherein the core rotation apparatus has a disk-shaped main body, the driving connection part is located at one side of the main body and the core connection part is located at the other side of the main body, wherein the driving connection part is cylindrical, and the rotating shaft of the motor can be inserted into the driving connection part and fixed by screwing, bonding, interference fit or clipping; roll up core connecting portion be the tube-shape roll up core connecting portion be the column or roll up core connecting portion be anchor clamps or fixture that can remove, the core of electric core can insert in the core connecting portion or roll up core connecting portion can insert in the core of electric core and connect through threaded connection, interference fit, the mode of pressing from both sides tightly or joint.
4. The spin-drying and soaking device according to claim 3, wherein the core rotating device further comprises a support portion, the support portion and the core connecting portion are located on the same side of the disc-shaped main body, the support portion is in a ring shape, a strip shape or a block shape, and the support portion is used for supporting a winding portion of the battery cell connected to the core rotating device.
5. The spin-drying and soaking device according to claim 1, wherein the rotating shaft of the motor drives one or more driving connection parts to rotate through a transmission mechanism, the transmission mechanism is a gear transmission mechanism or a belt transmission mechanism, the driving connection parts are gears or belt pulleys, the core of the battery cell can be inserted into the core connection part or the core connection part can be inserted into the core of the battery cell and connected in a manner of threaded connection, interference fit or clamping.
6. The spin-drying and soaking device according to claim 1, further comprising a limiting device, wherein the limiting device is disposed on the liquid collecting barrel, the limiting device and the winding core rotating device are disposed at two ends of the liquid collecting barrel, respectively, wherein the limiting device comprises a bearing, a bearing seat and a hollow limiting barrel, the bearing is fixedly connected to the liquid collecting barrel through the bearing seat, an outer wall of the hollow limiting barrel is tightly fitted with an inner wall of the bearing, and one end of the hollow limiting barrel can be sleeved on the winding core of the electric core or can be inserted into the winding core of the electric core, so that when the electric core rotates, the electric core can be limited from moving along a radial direction and/or an axial direction of the electric core.
7. The spin-and-soak apparatus of claim 1, wherein the spin-and-soak apparatus further comprises a retention cartridge having a cylindrical sidewall and through-holes or grooves in the sidewall, the cell being positionable in the retention cartridge such that the shape of the cell is maintained during rotation of the cell.
8. A method for spin-drying and impregnating a cell of a cylindrical battery, characterized in that the method for spin-drying and impregnating comprises a liquid spin-drying step and a liquid impregnating step, the liquid spin-drying step and/or the liquid impregnating step being operated with a spin-drying and impregnating device according to any one of claims 1 to 7.
9. The spin and soak method of claim 8, wherein, in the liquid spin step: the electric core is arranged in the liquid collecting barrel of the spin-drying and soaking device, the winding core of the electric core is connected to the winding core connecting part of the winding core rotating device, the discharge port of the liquid collecting barrel is opened, and the rotating shaft, the winding core rotating device and the electric core are rotated through the rotation of the motor, so that the liquid in the winding part of the electric core is thrown out of the electric core under the action of centrifugal force and is discharged from the discharge port; alternatively, the first and second electrodes may be,
arrange electric core in spin-dry and soak in the collection liquid section of thick bamboo of device, connect the book core of electric core in roll core rotary device's book core connecting portion, will the discharge port of collection liquid section of thick bamboo is opened, and insert the filling tube via the filling opening of collection liquid section of thick bamboo in the hollow part of roll core, make pivot, roll core rotary device and electric core rotate and pass through the rotation of motor the filling tube to the hollow part of roll core injects the heated gas into to make liquid in the winding portion of electric core and the gas of heating throw away from electric core and follow under the effect of centrifugal force the discharge port is discharged electric core pivoted while through the filling tube to it will to utilize the gas of heating to inject into in the roll core electric core.
10. The spin and soak method of claim 8, wherein, in the liquid soak step: the injection pipe is inserted into the hollow part of the winding core through the injection opening of the liquid collecting cylinder, liquid is injected into the winding core through the injection pipe, and meanwhile the rotating shaft, the winding core rotating device and the battery core are rotated through the rotation of the motor, so that the liquid injected into the winding core is fully soaked in the winding part of the battery core under the action of centrifugal force.
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| CN207504113U (en) * | 2017-12-01 | 2018-06-15 | 宁德新能源科技有限公司 | Battery core infiltration apparatus |
| CN207745989U (en) * | 2017-12-14 | 2018-08-21 | 山东省溯源绿色化工研究院 | A kind of automatic centrifuge |
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Address after: No. 1, 1st Floor, Building 4, No. 10, South 3rd Road, Shodu, Wuhou District, Chengdu City, Sichuan Province, 610043 Patentee after: Haofengguang Energy storage (Chengdu) Co.,Ltd. Address before: 1711, 17th floor, building 2, yard 1, Shangdi 10th Street, Haidian District, Beijing 100085 Patentee before: Beijing Hawaga Power Storage Technology Co.,Ltd. |