WO2023221034A1 - Machine d'empilement à grande vitesse de stratification à chaud multi-station pour cellule empilée et procédé d'empilement - Google Patents

Machine d'empilement à grande vitesse de stratification à chaud multi-station pour cellule empilée et procédé d'empilement Download PDF

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WO2023221034A1
WO2023221034A1 PCT/CN2022/093821 CN2022093821W WO2023221034A1 WO 2023221034 A1 WO2023221034 A1 WO 2023221034A1 CN 2022093821 W CN2022093821 W CN 2022093821W WO 2023221034 A1 WO2023221034 A1 WO 2023221034A1
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station
lamination
pole piece
negative electrode
positive electrode
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PCT/CN2022/093821
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English (en)
Chinese (zh)
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温在东
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温在东
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Publication of WO2023221034A1 publication Critical patent/WO2023221034A1/fr

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/02—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains
    • B65H5/021—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains by belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/36—Article guides or smoothers, e.g. movable in operation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
    • H01M8/2465—Details of groupings of fuel cells
    • H01M8/247—Arrangements for tightening a stack, for accommodation of a stack in a tank or for assembling different tanks
    • 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

Definitions

  • the invention relates to the technical field of laminated battery core production equipment, and in particular to a multi-station laminated battery core thermal lamination high-speed lamination machine and a lamination method.
  • power batteries, blade batteries, energy storage batteries and three-C batteries whose battery cores are formed using lamination technology and thermal lamination technology have limited production capacity due to current production processes and production line equipment, resulting in an inability to achieve breakthroughs in output.
  • the present invention aims to at least solve the problem existing in the prior art that "each round of stacking process can only complete the processing of one small cell unit, and during the stacking process, the separator needs to be continuously bent, and the process of reciprocating bending of the separator is time-consuming. It takes a lot of time and the production efficiency is low. Moreover, during the lamination process, when the battery pack is moved to the next station, it is easy to cause the pole pieces to shake and shift position. The production line speed must be controlled within a certain range, which cannot effectively improve production efficiency.” technical problem.
  • the present invention proposes a multi-station laminated battery core thermal lamination high-speed lamination machine and a lamination method, which can produce multiple small battery cells at the same time without bending the separator, saving time and laminating.
  • the position of each pole piece is fixed to avoid offset, improve the production efficiency of laminated cells, and meet supply demand.
  • a lamination conveying mechanism the lamination conveying mechanism is provided with a plurality of lamination stations, and the lamination stations are arranged along the extension direction of the lamination conveyance mechanism;
  • a first-level diaphragm unwinding and correction station is provided on one side of the starting position of the lamination conveying mechanism.
  • the lamination conveying mechanism drives the diaphragms of the first-level diaphragm unwinding and correcting station to pass through the lamination station in sequence. ;
  • a plurality of laminated CCD alignment mechanisms are provided on both sides of the laminated sheet conveying mechanism.
  • the laminated CCD aligning mechanism is divided into two types: a positive stacked CCD aligning mechanism and a negative stacked CCD aligning mechanism;
  • Each lamination station is provided with one lamination CCD positioning mechanism, wherein the lamination stations arranged at intervals are provided with the same type of lamination CCD positioning mechanism, and all adjacently arranged lamination CCD positioning mechanisms are provided
  • the lamination station is provided with different types of lamination CCD alignment mechanisms;
  • a hot rolling lamination positioning mechanism is provided correspondingly between each lamination station.
  • the hot rolling lamination positioning mechanism is used to heat the diaphragm and the pole piece to fix the positions of the pole piece and the diaphragm;
  • a secondary diaphragm unwinding and correcting station is provided above each stacking station, and the secondary diaphragm unwinding and correcting station is arranged between the two stacked CCD alignment mechanisms.
  • the hot roller lamination positioning mechanism includes an upper heating roller, which is rotatably connected above the two secondary separator unwinding and correction stations.
  • the roller surface is in contact with the surface of the diaphragm being unrolled at the secondary diaphragm unwinding and deflection correction station, and is used to promote the colloid between the diaphragm and the pole piece to melt and fix the diaphragm and the pole piece.
  • a single cell cutting mechanism is provided at the end of the lamination conveying mechanism, and the single cell cutting mechanism is used to cut off the separator between adjacent pole pieces; the single cell One side of the cutting mechanism is provided with a secondary stacking mechanism or a finished battery core forming mechanism.
  • the finished battery core forming mechanism is used to glue or hot-press the finished battery core.
  • one side of each of the stacked CCD alignment mechanisms is respectively provided with a chip taking station, and the chip taking station, the stacked CCD alignment mechanism and the stacking station The pole pieces are moved between positions through a pole piece transfer mechanism.
  • a two-pole sheet incoming conveyor belt is included, and the sheet taking station is divided into two types: a positive electrode sheet taking station and a negative electrode sheet taking station; the pole sheet incoming conveyor belt passes through each in turn.
  • the positive electrode pick-up station is used to allow the pole piece transfer mechanism to move the positive electrode stack into the positive electrode stack CCD alignment mechanism; the other pole piece incoming conveyor belt passes through each of the negative electrodes in sequence.
  • the chip taking station is used to allow the pole piece transfer mechanism to move the negative electrode stack into the negative electrode stack CCD alignment mechanism.
  • a plurality of pole piece discharging mechanisms are included.
  • the pole piece discharging mechanism is divided into two types: a positive pole piece discharging mechanism and a negative pole piece discharging mechanism.
  • the piece taking station is divided into There are two types of positive electrode chip taking station and negative electrode chip taking station; the positive electrode piece discharging mechanism is set corresponding to the positive electrode piece taking station, and is used to allow the pole piece transfer mechanism to move the positive electrode stack to the positive electrode In the stacked CCD alignment mechanism; the negative electrode piece discharging mechanism is set corresponding to the negative electrode piece taking station, and is used to allow the pole piece transfer mechanism to move the negative electrode stack to the negative electrode stack CCD alignment mechanism middle.
  • the lamination method includes a lamination conveying mechanism, a plurality of lamination stations, a primary separator unwinding and correcting station, a plurality of secondary separator unwinding and correcting stations, and a plurality of hot rollers.
  • the first-level diaphragm at the first-level diaphragm unwinding and correction station is unrolled onto the lamination conveying mechanism, and the lamination conveying mechanism drives the diaphragm to the lamination station;
  • the pole piece transfer mechanism transfers the pole pieces from the piece taking station to the positive electrode stack CCD alignment mechanism or the negative electrode stack CCD alignment mechanism for alignment, and the pole pieces complete the alignment. Finally, the pole piece transfer mechanism moves the pole piece to the lamination station;
  • the lamination conveying mechanism drives the first-level diaphragm to the next lamination station;
  • the secondary diaphragm at the secondary diaphragm unwinding and correction station is unrolled above the pole piece and covers the pole piece;
  • the upper heating roller of the hot roller laminating and positioning mechanism in S500 is close to the surface of the secondary diaphragm, heating the colloid of the secondary diaphragm, so that the secondary diaphragm and the pole piece are hot pressed and laminated;
  • the pole piece transfer mechanism transfers pole pieces from different types of stacked CCD alignment mechanisms to the stacking station, and the pole piece transfer mechanism transfers pole pieces to the secondary on the diaphragm, and adjust the position of the pole piece to align with the pole piece under the secondary diaphragm;
  • the laminated transport mechanism transports the primary diaphragm to the single cell cutting mechanism, and the single cell cutting mechanism cuts off the diaphragm on one side of the finished cell;
  • the finished battery cores described in S900 are moved to the next station for secondary stacking, gluing or hot pressing.
  • the pole piece transfer mechanism transfers an equal number of pole pieces each time, and transfers at least one pole piece each time.
  • the present invention includes a conveyor belt for incoming bipolar sheets, a plurality of positive electrode sheet taking stations and a plurality of negative electrode sheet taking stations, and the positive electrode sheet taking station is in conjunction with the positive electrode stack CCD alignment mechanism.
  • the pole piece incoming conveyor belt transports the pole piece through each of the positive electrode chip taking stations in sequence, and the pole piece
  • the chip transfer mechanism transfers the pole pieces of the positive electrode chip taking station to the positive electrode stack CCD alignment mechanism for alignment;
  • the other pole piece incoming conveyor belt transports the pole pieces through each of the negative electrodes in sequence
  • the pole piece transfer mechanism transfers the pole piece of the negative electrode chip taking station to the negative electrode stack CCD alignment mechanism for alignment.
  • a plurality of positive electrode piece discharging mechanisms and a plurality of negative electrode piece discharging mechanisms are included, and the positive electrode piece discharging mechanism corresponds to the positive electrode stack CCD alignment mechanism one by one, so The negative electrode piece discharging mechanism corresponds to the negative electrode stack CCD positioning mechanism one-to-one; the pole pieces of the positive electrode piece discharging mechanism are transported to the positive electrode piece taking station, and the pole piece transfer mechanism The pole pieces of the positive electrode piece taking station are transferred to the positive electrode stack CCD alignment mechanism for alignment; the pole pieces of the negative electrode piece discharging mechanism are transported to the negative electrode piece taking station, so The pole piece transfer mechanism transfers the pole piece of the negative electrode piece taking station to the negative electrode stack CCD alignment mechanism for alignment.
  • the multi-station high-speed lamination machine and lamination method for thermal lamination of laminated battery cells have at least the following beneficial effects:
  • the lamination conveying mechanism drives the first-level diaphragm unwinding and correction station The diaphragm moves.
  • the pole pieces and the diaphragms of the secondary diaphragm unwinding and correcting station are staggeredly placed on the diaphragm of the lamination conveying mechanism.
  • the pole pieces are stacked for a specified number of layers and then the diaphragms are cut to realize lamination. Mass production of battery cells.
  • the hot roller lamination positioning mechanism heats the colloid in the secondary diaphragm to increase its viscosity by heating and rolling, so that the relative position of the pole piece and the secondary diaphragm is fixed.
  • it can effectively prevent pole piece dislocation and offset, which is beneficial to increasing the production line operating speed while maintaining the stability of the stacked sheets and improving production efficiency.
  • Figure 1 is a first principle side view of an embodiment of the present invention
  • Figure 2 is a schematic top view of Example 1 of the embodiment of the present invention.
  • Figure 3 is a principle flow chart of Example 1 of the embodiment of the present invention.
  • Figure 4 is a schematic top view of Example 2 of the embodiment of the present invention.
  • Figure 5 is a principle flow chart of Example 2 of the embodiment of the present invention.
  • Figure 6 is a schematic flow chart of a high-speed laminating machine for thermal lamination of multi-station laminated battery cells according to an embodiment of the present invention
  • Figure 7 is a second principle side view of the embodiment of the present invention.
  • Lamination conveying mechanism 100 lamination station 110, hot roller lamination positioning mechanism 120, upper heating roller 121, primary separator unwinding and correcting station 210, secondary separator unwinding and correcting station 220, positive electrode lamination CCD Alignment mechanism 310, negative stack CCD alignment mechanism 320, pole piece incoming conveyor belt 400, positive electrode piece taking station 411, negative electrode piece taking station 412, positive electrode piece discharging mechanism 510, negative electrode piece discharging mechanism 520.
  • Single cell cutting mechanism 530 Single cell cutting mechanism 530.
  • orientation or positional relationships related to the orientation description are based on the orientation or position shown in the drawings.
  • the relationship is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention.
  • the multi-station laminated battery core thermal lamination high-speed lamination machine includes a lamination conveying mechanism 100, multiple lamination stations 110, a first-level diaphragm unwinding and correction station 210, multiple Laminated CCD positioning mechanism, multiple thermal roller lamination positioning mechanisms 120 and multiple secondary diaphragm unwinding and correction stations 220.
  • the laminating stations 110 are all arranged on the laminating conveying mechanism 100.
  • the laminating stations 110 are arranged along the extension direction of the laminating conveying mechanism 100.
  • a first-level diaphragm unwinding and correction is provided on one side of the starting position of the laminating conveying mechanism 100.
  • Station 210, the first-level diaphragm unwinding and correction station 210 unwinds the diaphragm onto the conveyor belt of the lamination conveying mechanism 100, and moves together with the conveyor belt of the lamination conveying mechanism 100, allowing the first-level diaphragm unwinding and correcting work
  • the diaphragm of station 210 passes through each lamination station 110 in sequence.
  • a plurality of laminated CCD positioning mechanisms are respectively provided on both sides of the laminated sheet conveying mechanism 100.
  • the laminated CCD positioning mechanism is divided into two types: a positive electrode laminated CCD positioning mechanism 310 and a negative electrode laminated CCD positioning mechanism 320.
  • the positive electrode laminated CCD positioning mechanism 320 The sheet CCD positioning mechanism 310 is used to perform the positioning process of the positive electrode piece, and the negative electrode stack CCD positioning mechanism 320 is used to perform the positioning process of the negative electrode piece.
  • a corresponding one is provided on one side of each stacking station 110.
  • a laminated CCD positioning mechanism in which the laminated CCD positioning mechanisms of the same type are provided for the laminated stacking stations 110 arranged at intervals, and the laminated CCD positioning mechanisms of different types are correspondingly arranged for the adjacent stacking stations 110 .
  • a secondary diaphragm unwinding and correcting station 220 is provided above each stacking station 110. The secondary diaphragm unwinding and correcting station 220 is arranged between the two stacked CCD alignment mechanisms.
  • a hot rolling laminating and positioning mechanism 120 is provided between the roll correction stations 220. The hot rolling laminating and positioning mechanism 120 is in a preheated state and can roll and heat the colloid of the diaphragm.
  • the hot rolling laminating and positioning mechanism 120 can heat and roll the secondary diaphragm after the secondary diaphragm of the secondary diaphragm unwinding and correction station 200 covers the top of the pole piece, so as to increase the colloid viscosity between the secondary diaphragm and the pole piece. , fixing the position of the secondary diaphragm and pole piece. After each lamination, the position of the pole pieces is fixed by the hot roller lamination positioning mechanism 120, which reduces the shaking of the stacks during the movement of the stack transport mechanism 100, effectively avoiding the position deviation of the pole pieces on the stacks, and allowing the stacks to It can withstand faster processing speeds and further improve the production efficiency of the production line.
  • the placement method of the laminated CCD alignment mechanism changes according to the actual site.
  • the same type of laminated CCD alignment mechanism is placed on the same side, that is, the positive electrode laminated CCD alignment mechanism is placed on the same side.
  • the positioning mechanisms 310 are all arranged on one side of the stack conveying mechanism 100, the negative stack CCD positioning mechanisms 320 are arranged on the other side of the stack conveying mechanism 100, and different types of stack CCD alignment mechanisms are arranged on both sides. , which can facilitate the transportation of pole pieces and facilitate the layout of equipment.
  • a separator is installed between the positive and negative electrodes to separate the positive and negative electrodes to prevent the positive and negative electrodes from contacting each other.
  • the positive and negative electrodes are staggered and stacked to form a complete single cell.
  • the device of the present invention performs high-speed stacking under the structure of laminated battery cells.
  • each stacking station 110 includes a stacking CCD alignment mechanism and a secondary diaphragm unwinding and correcting station 220, and the secondary diaphragm unwinding and correcting station 220 is located in front of the stacked CCD alignment mechanism.
  • the stacked CCD alignment mechanism first places the pole piece, and then covers the diaphragm through the secondary diaphragm unwinding and correction station 220. After covering the diaphragm, the relative position of the pole piece and the diaphragm is fixed by the hot roller lamination positioning mechanism 120.
  • the lamination conveying mechanism 100 drives the bottom diaphragm, the pole piece above the diaphragm and the secondary diaphragm to move to the lamination station 110 of the next station. If the previous lamination station 110 places the positive electrode piece , then the next lamination station 110 places the negative electrode lamination, and then the secondary diaphragm unwinding and correction station 220 above the lamination station 110 covers the diaphragm. In the same way, when the previous lamination station 110 places If the negative electrode sheet is used, the next stacking station 110 places the positive electrode sheet, and the secondary separator unwinding and correcting station 220 above the stacking station 110 covers the separator. Each stacking station 110 repeats the above steps and adjusts the number of cycles according to production needs.
  • the stacking transport mechanism 100 moves the single cells to the end for subsequent processing. Due to the continuous stacking method, , the lamination station 110 at the end of the lamination conveying mechanism 100 can produce a single battery cell in each process. Compared with the previous production equipment that uses diaphragms to continuously bend and stack pole pieces, the multi-station laminated battery cell of the present invention The efficiency of the thermal lamination high-speed laminating machine is faster. The previous equipment can only produce one single cell in one production cycle, and the reciprocating bending of the separator takes a lot of time, reducing production efficiency.
  • the laminating station 110 at the end can produce a single battery core each time it passes through, and adopts the form of unwinding multiple rolls of separators, which avoids the step of repeatedly bending and covering the separators. Multi-diaphragm coverage saves time and significantly improves efficiency.
  • the hot roller lamination positioning mechanism 120 is used to reinforce the positions of the pole pieces and the diaphragm, so that a higher number of layers can be stacked during the production process and the phenomenon of pole piece offset leading to a decrease in yield is reduced, further improving the efficiency of the production line. production efficiency to meet the needs of new energy companies for power batteries.
  • the hot roller laminating mechanism 120 includes an upper heating roller 121, which is rotatably connected above the secondary separator unwinding and correction station 220. .
  • the upper heating roller 121 is driven close to and away from the top of the lamination on the lamination conveying mechanism 100 by motor driving or hydraulic driving.
  • the driving mechanism drives the upper heating roller 121 to contact the diaphragm on the surface of the pole piece, the driving mechanism stops working to ensure The upper heating roller 121 can adapt to laminations of different heights.
  • the roller surface of the upper heating roller 121 is in a heated state.
  • the colloid between the diaphragm and the pole piece can be heated to increase the viscosity, and the upper heating roller 121 also exerts a certain pressure on the surface of the diaphragm to make the diaphragm and pole piece
  • the connection between the sheets is more stable, thereby increasing the stability of the laminate transportation process.
  • a single cell cutting mechanism 530 is provided at the end of the laminate conveying mechanism 100.
  • the single cell cutting mechanism 530 is used to cut off adjacent cells.
  • the single cells produced at the end of the lamination conveying mechanism 100 are covered by multiple pieces of separators. Each piece of separator also covers the single cells of the previous lamination station 110. They need to pass through the single cell.
  • the cutting mechanism completely cuts off the diaphragm between the two single cells to form an independent single cell as a whole.
  • the specific structure of the single cell cutting mechanism 530 is a technical solution well known to those skilled in the art and will not be described in this embodiment.
  • a secondary stacking mechanism or a finished cell forming mechanism is provided on one side of the single cell cutting mechanism 530.
  • the finished cell forming mechanism is used to glue or hot-press the finished cell. Specifically, after the single battery core is cut, it is transported to the finished battery core forming mechanism to complete subsequent processing to form finished products, or the single battery core is placed in a secondary stacking mechanism for secondary stacking.
  • the secondary stacking mechanism can use an existing stacker or the multi-station high-speed lamination machine for thermal lamination of laminated battery cells according to the embodiment of the present invention.
  • each stacked CCD alignment mechanism is provided with a corresponding chip removal station, the chip removal station, and the stacked CCD alignment mechanism.
  • a pole piece transfer mechanism is used to move the pole pieces between the mechanism and the stacking station 110 .
  • the pick-up station is filled with pole pieces waiting to be transferred to each stacked CCD alignment mechanism.
  • Each stacked CCD alignment mechanism is equipped with a pole piece transfer mechanism.
  • the pole piece transfer mechanism can be Structures such as suction cup manipulators, clamping manipulators, and pole piece transfer mechanisms are technical solutions well known to those skilled in the art and will not be described in the present invention.
  • the pole piece transfer mechanism moves the pole pieces in the pole piece removal station to the corresponding stacked CCD alignment mechanism.
  • the stacked CCD alignment mechanism performs the alignment operation on the pole pieces and then transfers the poles through the pole piece transfer mechanism.
  • the sheets are transferred to the lamination station 110 for lamination operation.
  • the pole pieces on the chip taking station will be continuously consumed during the lamination process of the equipment.
  • the present invention adopts two structures to supplement the pole pieces of the chip taking station.
  • the sheet taking station is divided into two types: the positive electrode sheet taking station 411 and the negative electrode sheet taking station 412.
  • the one-pole sheet incoming conveyor belt 400 passes through in sequence
  • Each positive electrode piece taking station 411 is used to allow the pole piece transfer mechanism to move the positive electrode stack into the positive electrode stack CCD alignment mechanism 310.
  • the other pole piece incoming conveyor belt 400 passes through each negative electrode piece taking station 412 in sequence. It is used to allow the pole piece transfer mechanism to move the negative electrode stack into the negative stack CCD alignment mechanism 320 .
  • a pole piece incoming conveyor belt 400 is provided on both sides of the laminate conveying mechanism 100.
  • Each pole piece incoming conveyor belt 400 only transports the same type of pole pieces, and the pole piece incoming conveyor belt 400 will Pass through the side of the laminated CCD alignment mechanism of the same type in sequence, that is, the chip taking station of the same type is set on the pole piece incoming conveyor belt 400.
  • the pole piece incoming conveyor belt 400 passes through the pole piece transfer mechanism, the pole piece The chip transfer mechanism moves the pole pieces from the pole piece incoming conveyor belt 400 to the stacked CCD alignment mechanism for alignment operation.
  • the pole piece discharging mechanism is divided into two types: positive electrode piece discharging mechanism 510 and negative electrode piece discharging mechanism 520.
  • the piece taking station is divided into positive electrode
  • the positive electrode piece discharging mechanism 510 is set corresponding to the positive electrode piece taking station 411, which is used to allow the pole piece transfer mechanism to move the positive electrode stack to the positive electrode stack CCD alignment. Institutional 310.
  • the negative electrode piece discharging mechanism 520 is provided corresponding to the negative electrode piece taking station 412 and is used to allow the electrode piece transfer mechanism to move the negative electrode stack to the negative electrode stack CCD alignment mechanism 320 .
  • each pole piece discharging mechanism corresponds to a piece taking station, and the produced pole pieces are transported to the piece taking station by the pole piece discharging mechanism, and then moved to the corresponding stacked CCD alignment by the pole piece transfer mechanism. in the institution.
  • first and second embodiments of the pole piece supplementary structure of the piece taking station are not the only implementation modes.
  • the present invention does not elaborate on the pole piece supplementary structure of the chip taking station one by one.
  • the flexible change of the pole piece supplementary structure of the chip taking station should be regarded as a part of the present invention. within the limited scope of protection.
  • the lamination method of the embodiment of the present invention is described below.
  • the lamination method is implemented based on the multi-station laminated battery core thermal lamination high-speed lamination machine of the present invention, including a lamination conveying mechanism 100, a plurality of lamination stations 110, and a laminating machine.
  • the first-level diaphragm of the S100 first-level diaphragm unwinding and correction station 210 is unrolled onto the laminating conveying mechanism 100, and the laminating conveying mechanism 100 drives the diaphragm to the laminating station 110;
  • the S200 pole piece transfer mechanism transfers the pole piece from the pole piece taking station to the positive pole stack CCD alignment mechanism 310 or the negative pole stack CCD alignment mechanism 320 for alignment. After the pole piece is aligned, the pole piece transfer mechanism Remove the pole piece to the lamination station 110;
  • the S300 stacking conveyor mechanism 100 drives the first-level diaphragm to the next stacking station 110;
  • the secondary diaphragm of the S400 secondary diaphragm unwinding and correction station 220 is unrolled above the pole piece and covers the pole piece;
  • the upper heating roller 121 of the S500 hot roller laminating positioning mechanism 120 is close to the surface of the secondary diaphragm, heating the colloid of the secondary diaphragm, so that the secondary diaphragm and the pole piece are hot pressed and laminated;
  • the S600 pole piece transfer mechanism transfers pole pieces from different types of stacked CCD alignment mechanisms to the stacking station 110.
  • the pole piece transfer mechanism transfers the pole pieces to the secondary diaphragm and adjusts the pole piece position. Aligned with the pole pieces below the secondary diaphragm;
  • the S800 laminated transport mechanism transports the primary separator to the single cell cutting mechanism 530, and the single cell cutting mechanism 530 cuts off the separator on one side of the finished cell;
  • the finished S900 battery cells are moved to the next station for secondary stacking, gluing or hot pressing.
  • the laminated CCD positioning mechanism in step S200 is the positive laminated CCD positioning mechanism 310
  • the laminated CCD positioning mechanism in step S500 is the negative laminated CCD positioning mechanism 320.
  • the stacked CCD alignment mechanism selects different types of stacked CCD alignment mechanisms according to the stacked CCD alignment mechanism of the previous stacking station 110 to perform the stacking operation, and according to the staggered positive and negative electrodes of the stacked cells Lamination.
  • N is the number of times the battery core pole pieces are stacked. The specific number of N is set according to the specifications of different types of battery cells.
  • a hot roller lamination positioning mechanism 120 is provided in front of the secondary separator unwinding and correcting station 220, and the first layer of the primary separator unwinding and correcting station 210 is The diaphragm and the pole piece are preheated and rolled, so that the bottom pole piece and the bottom diaphragm are bonded and fixed in position.
  • the pole piece transfer mechanism transfers an equal number of pole pieces each time, and transfers at least one pole piece each time.
  • the pole piece transfer mechanism can stack one piece, two pieces, or three pieces at the same time during a lamination process, and adjust the number of laminations at the lamination station 110 according to actual production needs.
  • the feeding method according to Embodiment 1 of the pole piece supplementary structure includes a two-pole piece incoming conveyor belt 400, a plurality of positive electrode piece taking stations 411 and multiple There are three negative electrode chip taking stations 412.
  • the positive electrode chip taking station 411 corresponds to the positive electrode stack CCD alignment mechanism 310 one-to-one
  • the negative electrode chip taking station 412 corresponds to the negative electrode stack CCD alignment mechanism 320 one-to-one.
  • a pole piece incoming conveyor belt 400 transports the pole pieces through each positive electrode piece taking station 411 in sequence.
  • the pole piece transfer mechanism transfers the pole pieces from the positive electrode piece taking station 411 to the positive electrode stack CCD alignment mechanism 310 for alignment.
  • Another pole piece incoming conveyor belt 400 transports the pole pieces through each negative electrode piece taking station 412 in sequence.
  • the pole piece transfer mechanism transfers the pole pieces from the negative electrode piece taking station 412 to the negative electrode stack CCD alignment mechanism 320 for alignment. Bit.
  • a plurality of positive electrode plate discharging mechanisms 510 and a plurality of negative electrode plate discharging mechanisms are included.
  • the mechanism 520 has a one-to-one correspondence between the positive electrode piece discharging mechanism 510 and the positive electrode stack CCD alignment mechanism 310, and the negative electrode piece discharging mechanism 520 has a one-to-one correspondence with the negative electrode stack CCD alignment mechanism 320.
  • the pole pieces of the positive electrode piece discharging mechanism 510 are transported to the positive electrode piece taking station 411, and the pole piece transfer mechanism transfers the pole pieces of the positive electrode piece taking station 411 to the positive electrode stack CCD alignment mechanism 310 for alignment.
  • the pole pieces of the negative electrode piece discharging mechanism 520 are transported to the negative electrode piece taking station 412, and the pole piece transfer mechanism transfers the pole pieces of the negative electrode piece taking station 412 to the negative electrode stack CCD alignment mechanism 320 for alignment.

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Abstract

La présente invention se rapporte au domaine technique des dispositifs de production de cellules empilées. La présente invention divulgue une machine d'empilement à grande vitesse de stratification à chaud à stations multiples pour une cellule empilée et un procédé d'empilement. La machine d'empilement à grande vitesse de stratification à chaud multi-station comprend un mécanisme de transport d'empilement, un côté de sa position de départ étant pourvu d'une station de déroulement et de correction de séparateur primaire ; une pluralité de mécanismes d'alignement CCD d'empilement sont agencés sur deux côtés ; une station de déroulement et de correction de séparateur secondaire est située de manière correspondante au-dessus de chaque station d'empilement ; et un mécanisme de positionnement de stratification de rouleau chaud est situé entre chaque paire de stations de déroulement et de correction de séparateur secondaire. Dans la machine d'empilement à grande vitesse de stratification à chaud pour une cellule empilée et le procédé d'empilement dans la présente invention, des feuilles d'électrode et des séparateurs sur les stations de déroulement et de correction de séparateur secondaire sont placés en alternance sur un séparateur sur le mécanisme de transport d'empilement ; et après qu'un nombre prédéterminé de couches des feuilles d'électrode sont empilées, le séparateur est coupé, de telle sorte qu'une production par lots de cellules empilées est obtenue, et une pluralité de petites cellules peuvent être formées pendant le processus de production. Pendant ce temps, le mécanisme de positionnement de stratification de laminage à chaud permet de fixer les positions relatives des feuilles d'électrode et des séparateurs secondaires, ce qui permet d'empêcher efficacement des situations de dislocation, d'écart et similaires des feuilles d'électrode, et d'améliorer l'efficacité de production.
PCT/CN2022/093821 2022-05-15 2022-05-19 Machine d'empilement à grande vitesse de stratification à chaud multi-station pour cellule empilée et procédé d'empilement WO2023221034A1 (fr)

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CN202210525208.XA CN115101817A (zh) 2022-05-15 2022-05-15 多工位叠片电芯热覆合高速叠片机及叠片方法

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CN114759249A (zh) * 2022-04-02 2022-07-15 东莞市佳兴自动化设备科技有限公司 叠片电芯高速叠片机及叠片方法

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CN102971888A (zh) * 2010-04-13 2013-03-13 微宏公司 连续式方形电池叠片系统和方法
CN103298572A (zh) * 2010-10-18 2013-09-11 微宏公司 连续式方形电池叠片系统和方法
CN113871721A (zh) * 2021-07-27 2021-12-31 蜂巢能源科技有限公司 一种叠片机和叠片方法
CN114464865A (zh) * 2022-02-14 2022-05-10 上海兰钧新能源科技有限公司 一种叠片电芯制备方法、装置及叠片电芯

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Publication number Priority date Publication date Assignee Title
CN102971888A (zh) * 2010-04-13 2013-03-13 微宏公司 连续式方形电池叠片系统和方法
CN103298572A (zh) * 2010-10-18 2013-09-11 微宏公司 连续式方形电池叠片系统和方法
CN113871721A (zh) * 2021-07-27 2021-12-31 蜂巢能源科技有限公司 一种叠片机和叠片方法
CN114464865A (zh) * 2022-02-14 2022-05-10 上海兰钧新能源科技有限公司 一种叠片电芯制备方法、装置及叠片电芯

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