WO2011085654A1 - 一种锂离子电池芯包制备方法和系统 - Google Patents

一种锂离子电池芯包制备方法和系统 Download PDF

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Publication number
WO2011085654A1
WO2011085654A1 PCT/CN2011/070058 CN2011070058W WO2011085654A1 WO 2011085654 A1 WO2011085654 A1 WO 2011085654A1 CN 2011070058 W CN2011070058 W CN 2011070058W WO 2011085654 A1 WO2011085654 A1 WO 2011085654A1
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WIPO (PCT)
Prior art keywords
positive electrode
negative electrode
qualified
machine
assembly
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Application number
PCT/CN2011/070058
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English (en)
French (fr)
Inventor
阳如坤
李建强
范方才
谭光荣
廖如虎
邱炳生
王登峰
Original Assignee
深圳市吉阳自动化科技有限公司
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Publication of WO2011085654A1 publication Critical patent/WO2011085654A1/zh

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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
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/04—Processes of manufacture in general
    • 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
    • H01M10/0404—Machines for assembling batteries
    • 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
    • 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
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/06—Electrodes for primary cells
    • H01M4/08—Processes of manufacture
    • H01M4/10—Processes of manufacture of pressed electrodes with central core, i.e. dollies
    • 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
    • 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 a lithium ion battery, in particular to a method and a system for preparing a lithium ion battery core package.
  • the manufacturing method of large-scale lithium ion power battery cells is mainly semi-automatic production of batteries and manual production of batteries.
  • the semi-automatic production of the core mainly includes a single mechanism piece, a single machine sorting, a single mechanism bag, a single machine lamination, and manual loading and unloading between the various machines;
  • the disadvantage of the existing semi-automatic core package preparation system is that During the production process, people participated in some of the work, which laid a hidden danger to the reliability of the core package. Because it is handled too much, it will affect the alignment of the cells; manual contact with the pole pieces and the diaphragm will affect the performance of the battery. Manually made batteries are generally only used in the laboratory.
  • the main technical problem to be solved by the present invention is to provide a method and system for preparing a lithium ion battery core package without manual intervention and good core package consistency.
  • the present invention provides a method for preparing a lithium ion battery core package, comprising the following steps:
  • the pole piece material is made into a negative electrode piece by a negative electrode tableting machine, and the negative electrode piece is conveyed to a negative electrode sorting machine by a first conveying device;
  • the qualified positive electrode sheet is screened from the positive electrode sheet through the positive electrode sorting machine according to a predetermined standard, and the qualified positive electrode sheet is transferred to the positive electrode bag making machine through the fourth conveying device;
  • the positive electrode pouch and the qualified negative electrode sheet were laminated by a laminator to form a core package.
  • the present invention also provides a lithium ion battery core package preparation system, comprising the following devices arranged in sequence: a negative electrode tableting machine, a negative electrode sorting machine, a laminating machine, a positive electrode bag making machine, and a positive electrode sorting.
  • a positive electrode tableting machine a conveying device is disposed between the two devices, the conveying device is used for conveying a material for preparing a core package; and the negative electrode tablet machine is used for forming a pole piece material into a negative electrode sheet;
  • the negative electrode sorting machine is used for screening qualified negative electrode sheets from the negative electrode sheets according to a predetermined standard; the positive electrode tableting machine is used for forming a pole piece material into a positive electrode sheet; and the positive electrode sorting machine is used for predetermined Standardizing a qualified positive electrode sheet from the positive electrode sheet;
  • the positive electrode bag making machine is for forming the qualified positive electrode sheet into a positive electrode bag;
  • the laminating machine is for using a positive electrode bag and the qualified positive electrode
  • the negative electrode sheets were laminated to form a core package.
  • a complete set of equipment including a lithium ion battery core package is sequentially discharged: a negative electrode tableting machine, a split separator, a laminating machine, a positive electrode bag making machine, a positive electrode sorting machine, and a positive electrode tableting machine.
  • the equipment between the two devices has a transmission device, so the core package can be prepared without manual operation, and the reliability and stability of the battery core package are improved.
  • FIG. 1 is a schematic structural view of a specific embodiment of a system of the present invention.
  • FIG. 2 is a layout diagram of a device according to a specific embodiment of the system of the present invention.
  • FIG. 3 is a schematic structural view of a laser slicer according to a specific embodiment of the system of the present invention.
  • FIG. 4 is a schematic structural view of a pole piece unwinding correction component in a specific embodiment of the system of the present invention.
  • FIG. 5 is a schematic structural diagram of a pole piece cache component in a specific embodiment of the system of the present invention.
  • FIG. 6 is a schematic structural view of a pole piece feeding assembly in a specific embodiment of the system of the present invention.
  • FIG. 7 is a schematic structural view of a laser slicing assembly in a specific embodiment of the system of the present invention.
  • FIG. 8 is a schematic structural view of a pole piece receiving assembly in a specific embodiment of the system of the present invention.
  • FIG. 9 is a schematic structural view of a negative electrode sorting machine in a specific embodiment of the system of the present invention.
  • FIG. 10 is a schematic structural view of a feeding system in a specific embodiment of the system of the present invention.
  • FIG. 11 is a schematic structural diagram of a weighing and sorting system in a specific embodiment of the system of the present invention.
  • FIG. 12 is a schematic structural view of a positive electrode bag making machine according to a specific embodiment of the system of the present invention.
  • FIG. 13 is a schematic structural view of a pole piece handling assembly in a specific embodiment of the system of the present invention.
  • FIG. 14 is a schematic structural view of a pole piece sub-positioning assembly in a specific embodiment of the system of the present invention.
  • FIG. 15 is a schematic structural view of a positive electrode bag making assembly in a specific embodiment of the system of the present invention.
  • 16 is a schematic structural view of a pull bag bag assembly in a specific embodiment of the system of the present invention.
  • FIG. 17 is a schematic structural view of a bag-making laminating machine in a specific embodiment of the system of the present invention.
  • FIG. 18 is a schematic structural view of a negative electrode tab assembly of a bag-making laminating machine according to a specific embodiment of the system of the present invention.
  • FIG. 19 is a schematic structural view of a bag-making lamination stack assembly according to a specific embodiment of the system of the present invention.
  • FIG. 20 is a schematic structural view of a bag-type laminating machine robot handling assembly in a specific embodiment of the system of the present invention
  • 21 is a schematic structural view of an outer packaging diaphragm assembly of a bag-making laminating machine according to a specific embodiment of the system of the present invention.
  • the lithium ion battery core package preparation system of the present invention an embodiment thereof, as shown in FIG. 1 and FIG. 2, a tablet machine, a sorting machine, a positive electrode bag making machine 600 and a lamination machine 300, and the tablet machine includes a negative electrode.
  • the tableting machine 100 and the positive electrode tableting machine 400, the sorting machine includes a negative electrode sorting machine 200 and a positive electrode sorting machine 500, and are arranged in the following order: a negative electrode tableting machine 100, a negative electrode sorting machine 200, a laminating machine 300, a positive electrode bag making machine 600, a positive electrode sorting machine 500 and a positive electrode tableting machine 400; between the two devices, a conveying device for conveying the material for preparing the core package is provided; and the negative electrode tableting machine 100 is used for the pole piece material A negative electrode sheet is prepared; a negative electrode sorting machine 200 is used to screen a qualified negative electrode sheet from the negative electrode sheet according to a predetermined standard; a positive electrode tableting machine 400 is used to form the pole piece material into a positive electrode sheet; and a positive electrode sorting machine 500 is used for pressing The predetermined standard separates the qualified positive electrode sheets from the positive electrode sheets; the positive electrode bag making machine 600 is used to form the qualified positive electrode sheets into the positive electrode bags; and the la
  • the first transfer device is for transferring the negative electrode sheet to the negative electrode sorter 200; the second transfer device is for transferring the qualified negative electrode sheet to the laminator 300; and the third transfer device is for transferring the positive electrode sheet to the positive electrode sorter 500; a fourth transfer device is used to transfer the qualified positive electrode sheet to the positive electrode bag making machine 600; and a fifth transfer device is used to transfer the positive electrode bag to the lamination machine 300.
  • the first conveyor, the second conveyor, the third conveyor, the fourth conveyor, and the fifth conveyor may each be any of a conveyor belt, a vacuum suction device, and a robot.
  • the pole piece material is made into a positive electrode piece, and can be realized by any one of a metal die-making mechanism piece, a circular die-cutting die-making mechanism piece, a laser film-making mechanism piece or a flat pressing punching and cutting piece mechanism piece. .
  • the pole piece material is made into a negative electrode piece, and can be realized by any one of a metal die-making mechanism piece, a circular die-cutting die-making mechanism piece, a laser chip-making mechanism piece or a flat-pressing flat die-cutting mechanism piece. .
  • the sorting machine comprises a driving device and a sequentially connected feeding device 210, a sorting device 220 and a discharging device 230, the driving device is for driving the sorting device, and the sorting device 220 comprises a feeding station and a discharging device
  • the positive electrode sheet and the negative electrode sheet are fed from the feeding station into the sorting device 220, and the qualified positive electrode sheet and the qualified negative electrode sheet are output from the discharging station.
  • the sorting device 220 further includes a weighing assembly 221, a turntable assembly 222, and a waste recovery assembly 223, which sort the qualified positive electrode sheets and the qualified negative electrode sheets from the positive and negative electrode sheets according to a predetermined standard, including the weighing components by weight standard.
  • a qualified positive electrode sheet and a qualified negative electrode sheet are selected, and the rotating disc assembly transfers the qualified positive electrode portion and the qualified negative electrode sheet to the discharging station, and delivers the unacceptable positive electrode sheet and the unacceptable negative electrode sheet to the waste recycling assembly.
  • the bag-making of the qualified positive electrode sheets is carried out by a roll-type heat welding bag or a roll-type ultrasonic bag.
  • the laser tableting machine comprises a pole piece unwinding correction component 110, a pole piece buffer assembly 120, a pole piece feed assembly 130, a laser slicing assembly 140 and a pole piece receiving assembly 150, and the pole piece unwinding correction component 110 is used for correcting the deviation.
  • the web feeds the web to the pole piece buffer assembly 120, which controls the time and speed of unwinding and delivers the web to the pole piece feed assembly 130, which is used for the pole piece feed assembly 130
  • the web is conveyed to a laser slicing assembly 140 for cutting the web into positive and negative sheets and delivering them to a pole piece receiving assembly 150 for use in the positive sheet and
  • the negative electrode sheets are separately supplied to the positive electrode separator 500 and the negative electrode separator 200.
  • the tablet machine of the present invention includes a pole piece feed assembly 130 and a laser slicing assembly 140.
  • the laser slicing assembly 140 can be a laser slicer.
  • the tablet press of the present invention may further include a pole piece unwinding correction assembly 110, a pole piece buffer assembly 120, and a pole piece receiving assembly 150.
  • the front sleeve process of the tableting mechanism sheet is coating, and the material coated by the coating machine is in the form of a roll, and the tableting machine prepares the coil material into a negative electrode sheet of a desired size.
  • the working process of the tablet machine is as follows: the pole piece coil material is corrected by the pole piece unwinding correction mechanism 110 in time by the pole piece correcting unit 110, and the correction amount is 0.5 mm; and the pole piece buffer component 120 includes a buffer mechanism and The tension mechanism ensures that the length of each sheet is uniform; the laser slicing assembly 140 cuts the web into pole pieces by laser cutting; finally, the receiving unit 150 collects the pole pieces.
  • the pole piece unwinding correction assembly 110 includes a three-phase motor 111, a servo motor 112, a sensor 113, and a cylinder 114.
  • the coil 115 is expanded by a pneumatic shaft and unwound by a three-phase motor 111. When the coil is deflected, the sensor 113 will signal the servo motor 112 to correct it. When the web 115 is used up, the trailing end is pressed by the cylinder 114 and then replaced with a new coil. The new roll port can be bonded to the last roll end to save material and alignment time.
  • the pole piece buffer assembly 120 includes a weight roller 121 and a sensor 122.
  • the pole piece is tensioned by the weight roller 1201, and the speed of the unwinding and unwinding is judged by the sensor 1202.
  • the pole piece feed assembly 130 includes a cylinder 131, an upper pressing roller 132, a lower pressing roller 133, and a servo motor 134.
  • the cylinder 131 lifts the upper pressing roller 132. After the sheet is finished, the upper pressing roller 132 is pressed down and the lower pressing roller 133 is closed, and the servo motor 134 is started to drive the pole piece forward by the friction between the two rollers. The move completes the feeding action.
  • the laser slicing assembly 140 includes an X-axis 141, a Y-axis 142, a Z-axis 143, and a cutting torch height trimming mechanism 144.
  • the laser slicing assembly 140 adopts an X-axis 141, a Y-axis 142, and a Z-axis 143 three-coordinate mechanism.
  • the gantry-type frame is provided with a fiber laser cutting system and a cutting position between the cutting torch and the pole piece to maintain an optimal upper and lower distance.
  • the cutting torch height fine-tunes the mechanism 1404.
  • the servo motor is used to drive the laser head, which can realize digital control, adapt to multi-standard pole piece cutting processing, and save the cost of die change.
  • the gantry type worktable has good rigidity and high stability.
  • the pole piece receiving assembly 150 includes a limit suction cup 151 and a discharge suction cup 152.
  • the pole piece receiving assembly 150 is mounted on the Y-axis 142 of the pole piece feed assembly 140.
  • the take-up suction cup 151 sucks up the material to be cut and puts it at a designated position, and the synchronous discharge suction cup 152 sucks up the cut pole piece in the positive and negative weighing sorting machines.
  • An embodiment of the sorting machine of the present invention includes a feeding device 210, a sorting device 220, and a discharging device 230.
  • the sorting device can be a weighing sorting device 220.
  • the coil material passes through the tableting machine, it is made into a negative electrode sheet or a positive electrode sheet, and then the negative electrode sheet or the positive electrode sheet is divided into a OK-compliant file and a biased or light-off NO file through a sorting machine.
  • the feeding device 210 comprises a pole box assembly 211, a turntable assembly 2102, and a top material assembly 213.
  • the turntable is driven by the motor.
  • the splitter is rotated 180° and the top assembly then raises the pole piece to a certain height to weigh the suction cup of the sorting device.
  • the weighing sorting device 220 is driven by a three-phase motor and positioned by a four-part splitter.
  • the weighing sorting device 220 includes a weighing assembly 221, a turntable assembly 222, and a waste recycling assembly 223.
  • the pole piece sent by the feeding device 210 is sucked up from the suction position A, rotated 90° clockwise and then reaches the weighing position B, and then rotated 90° clockwise to reach the discharge level C, if the weight of the pole piece is Within the acceptable range, it is placed in the magazine of the discharge system, and the unacceptable pole piece continues to rotate 90° clockwise to the waste recovery position D, which is placed in the magazine of the waste recovery assembly 223.
  • the discharging device 230 can be the same as the feeding device 210.
  • the rotating wheel drives the splitter by the motor. Rotating 180°, the top member 213 then raises the pole piece to a certain height so that the positive bag machine 600 and the suction cup of the lamination machine 300 suck.
  • the positive electrode bag making machine 600 includes a positive electrode bag making assembly 630.
  • the positive electrode bag machine 600 can also include a pole piece handling assembly 610, a pole piece secondary positioning assembly 620, and a pull bag receiving bag assembly 640.
  • the positive electrode bag is formed by a layer of separator on the upper and lower sides of the coating layer of the positive electrode, and the periphery of the coating layer is formed by heat welding or ultrasonic welding (except for the ear strap), so that the coating layer of the positive electrode forms a single positive electrode bag.
  • the positive electrode bag and the negative electrode are laminated, there is always a separator between the positive electrode and the negative electrode, and the positive electrode bag plays an important role in the performance of the large power battery.
  • the pole piece handling assembly 610 includes a cylinder 611, a first suction cup 612, a second suction cup 613, and a servo motor 614.
  • the first suction cup 612 sucks the pole piece from the cartridge of the positive separator sorting system, and the second suction cup 613 sucks the well-positioned pole piece from the pole piece sub-positioning assembly, and passes through
  • the servo motor 614 is transported to the designated position, and the high-precision repeated positioning can be realized.
  • the cylinder 611 is retracted, the pole piece sucked by the first suction cup 612 is placed in the secondary positioning assembly, and the pole piece sucked by the second suction cup 613 is placed in the positive pole. Bag making assembly 630.
  • the pole piece positioning assembly 620 includes a first cylinder 621, a second cylinder 622, and a servo motor 623.
  • Each movement of the first cylinder 621 and the second cylinder 622 limits the degree of freedom in the X and Y directions of one pole piece.
  • the pole piece positioning servo motor 623 pushes the entire positioning table to avoid the position.
  • the positive electrode bag making assembly 630 includes a lower support base 631, a bag forming first cylinder 632, and a bag forming second cylinder 633.
  • the pole piece handling assembly places the positioned pole piece on the lower support base 631 and returns to the original position, there is a diaphragm on the upper and lower sides of the pole piece, and then the first cylinder 632 of the bag is extended, and the pressure roller on the bag will be The upper and lower diaphragms are tightly pressed, the pole piece is wrapped therein, and the second cylinder 3303 of the bag is extended again, and the heated blade mold heats the diaphragm along the outer edge of the pole piece, and then the second cylinder 633 is formed. With the knife die retracted, the first cylinder 632 of the bag is retracted with the pressure roller, thereby forming a positive electrode bag with the exposed ear seal.
  • the pull bag bag assembly includes a first jaw 641, a second jaw 642, a first servo motor 643, a second servo motor 644, a third servo motor 649, a first cylinder 645, a first cylinder. 643.
  • the first jaw 641 merges with the front end of the clamping pole pocket, the first servo motor 643 drives it to the left to the designated position, while the second jaw 642 is opened, and the second servo motor 644 drives the direction. Move right to the specified position and merge again to clamp the front end of the next pole pocket.
  • the first cylinder 645 extends out of the upper surface of the pole piece bag with the suction cup, and then the second cylinder 646 is extended with the hot cutting knife to cut off the interface between the adjacent two bags and then retracted, thereby completing the bag pulling action.
  • the third cylinder 647 is extended with a large vacuum plate to suck the lower surface of the pole piece bag, and the first cylinder 645 is retracted with the suction cup after the vacuum is cut off, and the first clamping jaw 641 is opened, and is driven by the first servo motor 643.
  • the fourth cylinder 648 is extended with a small vacuum plate to attract the lower surface of the remaining portion of the pole piece bag, and then the third cylinder 647 and the fourth cylinder 648 are towed while the pole piece is being retracted.
  • the third servo motor 649 is activated to drive the pole piece bag to the designated position for the lamination machine to suck. This completes the bagging action.
  • the lamination machine 300 of the present invention may alternatively be a pouch laminator comprising a stack assembly 320 and an overwrap membrane assembly 340.
  • the lamination machine 300 of the present invention may also include a negative plate tab assembly 310 and a robot handling assembly 330.
  • the negative electrode tab assembly 310 is configured to receive the qualified negative electrode sheet sorted from the negative electrode sorting machine; the stacking assembly 320 is configured to receive the positive electrode bag outputted from the positive electrode bag making machine, and complete the stacking of the negative electrode sheet and the positive electrode bag;
  • the robot handling assembly 330 is used to carry the stacked negative and positive pouches to the outer membrane assembly 340 for wrapping the stacked negative and positive pouches out of the membrane.
  • the laminator 300 laminates the negative electrode sheet, the positive electrode bag, the negative electrode sheet, the positive electrode bag, and the negative electrode sheet by lamination process until the number of laminations required for the lamination process is completed, and then the PET plastic plate or the separator is wrapped. Apply high temperature glue to make a core package.
  • the negative electrode tab assembly 310 includes a first cylinder 311, a suction cup 312, a servo motor 313, and a second cylinder 314.
  • the first cylinder 311 drives the suction cup 312 to move, sucks the negative electrode piece from the magazine of the discharge system of the negative electrode sorting machine 200, and then returns to the upper positioning component by the servo motor 313, and the first cylinder 311 drives the suction cup 312 to move down.
  • the negative electrode sheet and the second cylinder 314 are operated again, and the X and Y directions of the negative electrode sheet are positioned.
  • the stack assembly 320 includes a first cylinder 321, a first chuck 322, a second cylinder 323, a second chuck 324, a third cylinder 325, a fourth cylinder 326, a servo motor 327, and a fifth cylinder 328.
  • the first cylinder 321 drives the first suction cup 322 to move, sucking the positive pressure bag from the vacuum pallet of the positive electrode bag making machine, and the second cylinder 323 drives the second suction cup 324 to extend, and is put down from the negative secondary positioning assembly.
  • the negative electrode is placed on the lamination table.
  • the fourth cylinder 326 is retracted to press the negative electrode plate on the lamination table, and then the second cylinder 323 drives the second suction cup 324 to retract.
  • the servo motor 327 drives the first suction cup 322 and the second suction cup 324 sucking the positive electrode bag to move to the right until the first suction cup 322 is stopped above the lamination table, and the second suction cup 324 is stopped to the upper position of the negative secondary position, and then the first cylinder 321 drives the first suction cup 322 to extend and release the positive electrode bag, and after the third cylinder 325 extends out of the fourth cylinder 326 and then protrudes, the third cylinder 325 retracts to the fourth cylinder 326 and then retracts, and presses on the laminated table to overlap.
  • the negative electrode sheet and the positive electrode bag, and then the first cylinder 321 drives the first suction cup 322 to retract.
  • the second cylinder 323 drives the second suction cup 324 to suck up the next negative electrode sheet from the negative secondary positioning assembly, and then cycles until the set number of laminations is completed.
  • the fifth cylinder 328 then moves the entire lamination table to a designated position for the robot handling assembly 330 to move.
  • the robot handling assembly 330 includes a first cylinder 331, a second cylinder 332, a gripper 333, a servo motor 334, a robot handling assembly third cylinder 335, and a robot handling assembly fourth cylinder 336.
  • the fifth cylinder 328 of the stack assembly drives the stacking table and the stacked battery core to move to the designated position
  • the first cylinder 331 is extended, the second cylinder 332 is retracted, and then the air gripper 333 is closed to clamp the battery core,
  • a cylinder 331 is retracted to lift the cell away from the lamination station.
  • the servo motor 334 is activated to carry the battery core above the outer diaphragm platform, then the first cylinder 331 is extended, the air gripper 333 is opened, the second cylinder 332 is extended, and the first cylinder 331 is retracted, so that the battery core is placed at the bottom. It has been placed on a covered diaphragm platform with a layer of diaphragm.
  • the third cylinder 335 drives the pressure roller to press the diaphragm, and the fourth cylinder 336 drives the heat sealing knife to heat seal the outer membrane interface.
  • the outer diaphragm assembly includes a first servo motor 341, a first air gripper 342, a second servo motor 343, a second air gripper 344, a first cylinder 345, a second cylinder 346, a large press roller 347, Three cylinders 348, small pressure rollers 349 and motor 3410.
  • the first servo motor 341 drives the first air gripper 342 to clamp the diaphragm to the left to move to the designated position, and then the first gripper 342 opens, and the second servo motor 343 drives the open second gripper 344 to the right to After the specified position, the clamping diaphragm is closed, and the first cylinder 345 drives the hot cutter to cut the diaphragm.
  • the robot then places the cell on the outboard diaphragm platform so that there is a diaphragm at the bottom of the cell.
  • the second cylinder 346 is extended, and the large pressure roller 347 is moved to the left to enclose the diaphragm in the upper right half of the battery core, and then the third cylinder 348 is extended to drive the small pressure roller 349 to the right to wrap the diaphragm on the upper left side of the battery core.
  • the robot handling assembly The fourth cylinder 336 drives the heat sealing knife to heat seal the diaphragm overlap region, and thus the entire outer core is wrapped with a layer of diaphragm.
  • the outer diaphragm assembly motor 3410 functions as a diaphragm unwinding.
  • the pole piece material is made into a negative electrode piece by a negative electrode tableting machine, and the negative electrode piece is conveyed to a negative electrode sorting machine by a first conveying device;
  • the qualified positive electrode sheet is screened from the positive electrode sheet through the positive electrode sorting machine according to a predetermined standard, and the qualified positive electrode sheet is transferred to the positive electrode bag making machine through the fourth conveying device;
  • the positive electrode pouch and the qualified negative electrode sheet were laminated by a laminator to form a core package.
  • the pole piece material is made into a positive electrode sheet, which is specifically realized by any one of a metal die-making mechanism piece, a circular die-cutting die-making mechanism piece or a laser chip-making mechanism piece;
  • the preparation of the negative electrode sheet is specifically realized by any one of a metal die-making mechanism sheet, a circular die-cutting sheet-making mechanism sheet or a laser sheet-making mechanism sheet.
  • a laser tableting machine is used for tableting.
  • screening a qualified negative electrode sheet from the negative electrode sheet according to a predetermined standard comprises sorting out a qualified negative electrode sheet by weight; and selecting a qualified positive electrode sheet from the positive electrode sheet according to a predetermined standard, including by weight standard A qualified positive electrode piece is selected.
  • the sorting of the qualified positive electrode sheets is carried out by bag rolling or hot-pressing bags.
  • the die is not used, and the replacement is convenient, and the cut piece has no powder and less burrs.
  • the laser slice of the invention has been tested, and the physical properties and chemical properties of the trimmed edge after laser slice are tested to prove that the performance of the battery is not affected after the slice.
  • each station is arranged by a disc structure, which can be a precision electronic scale, a CCD visual inspection system, which can be sorted according to the weight, or the coating quality, or the quality of the circumference of the pole piece after slicing, and can also adopt a straight line.
  • a disc structure which can be a precision electronic scale, a CCD visual inspection system, which can be sorted according to the weight, or the coating quality, or the quality of the circumference of the pole piece after slicing, and can also adopt a straight line.
  • Each station is arranged to have an important role in the consistency of the performance of the battery.
  • the positive electrode sheet is bag-formed by a heat-welding bag, the welded positive electrode bag is flat, the separator has no drawing edge, the weld seam has good consistency, and the welding effect is adjustable.
  • the positive electrode bag of the invention has been tested, and the consistency of the weld, the quality of the weld and the flatness of the separator have been tested after heat welding, and all have reached the process standard of bag making.
  • the main function of the laminating machine includes stacking of the negative electrode sheet and the positive electrode bag, and after stacking to a set number, the outer diaphragm or PET plastic plate is carried out at the second station, and the third station is attached.
  • High-temperature glue will not affect the alignment of the pole pieces after stacking, and will not cause secondary damage to the pole piece and the diaphragm, which plays an important role in the performance of the battery.
  • the bag-making laminating machine of the invention has been tested, and the suction cup can suck up the positive electrode bag, laminate the film, and conduct experiments on the outer-diaphragm, and prove the tightness of the outer-diaphragm to meet the core package process standard of the battery.

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Description

一种锂离子电池芯包制备方法和系统 技术领域
本发明涉及锂离子电池，尤其涉及一种锂离子电池芯包制备方法和系统。
背景技术
目前，大型锂离子动力电池电芯的制造方法主要为半自动制作电芯与手动制作电芯。半自动制作电芯主要包括单机制片，单机分选，单机制袋，单机叠片，通过人工操作方式来完成各个机器之间的上料与出料；现有的半自动芯包制备系统的缺点是制作过程中人参与了其中的部分工作，这对芯包的可靠性埋下的隐患。因为过多地搬运，会影响电芯的对齐度；人工触及极片与隔膜会影响电芯性能。而手动制作电芯一般只在实验室才会使用。
 技术问题
本发明要解决的主要技术问题是，提供一种无需人工参与、所制芯包一致性好的锂离子电池芯包制备方法和系统。
技术解决方案
为解决上述技术问题，本发明提供一种锂离子电池芯包制备方法，包括以下步骤：
通过负极制片机将极片材料制成负极片，通过第一传送装置将所述负极片传送到负极分选机；
按预定标准通过所述负极分选机从所述负极片中筛选出合格的负极片，通过第二传送装置将所述合格的负极片传送到叠片机；
通过正极制片机将极片材料制成正极片，通过第三传送装置将所述正极片传送到正极分选机；
按预定标准通过所述正极分选机从所述正极片中筛选出合格的正极片，通过第四传送装置将所述合格的正极片传送到正极制袋机；
通过所述正极制袋机将所述合格的正极片制成正极袋，通过第五传送装置将所述正极袋传送到叠片机；
通过叠片机将所述正极袋与所述合格的负极片进行叠片，制成芯包。
为解决上述技术问题，本发明还提供一种锂离子电池芯包制备系统，包括顺序摆放的以下设备：负极制片机、负极分选机、叠片机、正极制袋机、正极分选机和正极制片机；所述设备两两之间设置有传送设备，所述传送设备用于输送制备芯包的材料；所述负极制片机用于将极片材料制成负极片；所述负极分选机用于按预定标准从所述负极片中筛选出合格的负极片；所述正极制片机用于将极片材料制成正极片；所述正极分选机用于按预定标准从所述正极片中分选出合格的正极片；所述正极制袋机用于将所述合格的正极片制成正极袋；所述叠片机用于将正极袋与所述合格的负极片进行叠片，制成芯包。
 有益效果
本发明的有益效果是：
本发明中，由于包括制备锂离子电池芯包的按顺序排放的全套设备：负极制片机、分极分选机、叠片机、正极制袋机、正极分选机和正极制片机，各设备两两之间设备有传送设备，因此无需经过人工操作，即可完成芯包的制备，提高了电池芯包的可靠性和稳定性。
 附图说明
图1为本发明系统一种具体实施方式的结构示意图；
图2为本发明系统具体实施方式的设备布局图；
图3为本发明系统具体实施方式中的激光切片机的结构示意图；
图4为本发明系统具体实施方式中的极片放卷纠偏组件的结构示意图；
图5为本发明系统具体实施方式中的极片缓存组件的结构示意图；
图6为本发明系统具体实施方式中的极片送片组件的结构示意图；
图7为本发明系统具体实施方式中的激光切片组件的结构示意图；
图8为本发明系统具体实施方式中的极片收料组件的结构示意图；
图9为本发明系统具体实施方式中的负极分选机的结构示意图；
图10为本发明系统具体实施方式中的入料系统的结构示意图；
图11为本发明系统具体实施方式中的称重分选系统的结构示意图；
图12为本发明系统具体实施方式中的正极制袋机的结构示意图；
图13为本发明系统具体实施方式中的极片搬运组件的结构示意图；
图14为本发明系统具体实施方式中的极片次定位组件的结构示意图；
图15为本发明系统具体实施方式中的正极制袋组件的结构示意图;
图16为本发明系统具体实施方式中的拉袋接袋组件的结构示意图;
图17为本发明系统具体实施方式中的制袋式叠片机的结构示意图；
图18为本发明系统具体实施方式中的制袋式叠片机负极片接片组件的结构示意图；
图19为本发明系统具体实施方式中的制袋式叠片机叠装组件的结构示意图；
图20为本发明系统具体实施方式中的制袋式叠片机机械手搬运组件的结构示意图；
图21为本发明系统具体实施方式中的制袋式叠片机外包隔膜组件的结构示意图
 本发明的实施方式
下面通过具体实施方式结合附图对本发明作进一步详细说明。
本发明的锂离子电池芯包制备系统，其一种实施方式，如图1、图2所示，制片机、分选机、正极制袋机600和叠片机300，制片机包括负极制片机100和正极制片机400，分选机包括负极分选机200和正极分选机500，按照以下顺序摆放：负极制片机100、负极分选机200、叠片机300、正极制袋机600、正极分选机500和正极制片机400；所述设备两两之间设置有传送设备，用于输送制备芯包的材料；负极制片机100用于将极片材料制成负极片；负极分选机200用于按预定标准从负极片中筛选出合格的负极片；正极制片机400用于将极片材料制成正极片；正极分选机500用于按预定标准从所述正极片中分选出合格的正极片；正极制袋机600用于将所述合格的正极片制成正极袋；叠片机300用于将正极袋与合格的负极片进行叠片，制成芯包。传送设备包括第一传送装置、第二传送装置、第三传送装置、第四传送装置和第五传送装置。
第一传送装置用于将负极片传送到负极分选机200；第二传送装置用于将合格的负极片传送到叠片机300；第三传送装置用于将正极片传送到正极分选机500；第四传送装置用于将合格的正极片传送到正极制袋机600；第五传送装置用于将正极袋传送到叠片机300。
第一传送装置、第二传送装置、第三传送装置、第四传送装置和第五传送装置均可为传送带、真空吸取装置和机械手中的任意一种。
将极片材料制成正极片具体可通过五金冲模制片机制片、圆压圆模切制片机制片、激光制片机制片或是平压平冲切制片机制片中的任意一种实现。
将极片材料制成负极片具体可通过五金冲模制片机制片、圆压圆模切制片机制片、激光制片机制片或是平压平冲切制片机制片中的任意一种实现。
分选机包括驱动装置以及顺次连接的入料装置210、分选装置220和出料装置230，驱动装置用于驱动所述分选装置，分选装置220包括入料工位和出料工位，使正极片和负极片从入料工位进入分选装置220，使合格的正极片和合格的负极片从出料工位输出。
分选装置220还包括称重组件221、转盘组件222和废料回收组件223，按预定标准从正极片和负极片中分选出合格的正极片和合格的负极片包括称重组件按重量标准分选出合格的正极片和合格的负极片，转盘组件将合格的正极处和合格的负极片传送到出料工位，将不合格的正极片和不合格的负极片输送到废料回收组件。
对分选出的合格正极片进行制袋具体通过滚压式热焊制袋或滚压式超声波制袋实现。
激光制片机包括极片放卷纠偏组件110、极片缓存组件120、极片送片组件130、激光切片组件140和极片收料组件150，极片放卷纠偏组件110用于纠正跑偏的卷料并将卷料输送到极片缓存组件120，极片缓存组件120用于控制放卷的时间和速度并将卷料输送到极片送片组件130，极片送片组件130用于将卷料输送到激光切片组件140，激光切片组件140用于将卷料切割成正极片和负极片并输送到极片收料组件150，极片收料组件150用于将所述正极片和负极片分别输送到正极分选机500和负极分选机200。
在一种实施方式中，本发明的制片机，如图3所示，包括极片送片组件130和激光切片组件140。激光切片组件140可以是激光切片机。
本发明制片机还可以包括极片放卷纠偏组件110、极片缓存组件120和极片的收料组件150。
在锂电池生产过程中，制片机制片的前套工序是涂布，涂布机涂出来的料呈卷状，制片机把卷料制成所需要尺寸负极片。制片机的工作流程如下:极片卷料在极片纠偏组件110的作用下，通过极片放卷纠偏机构110及时地纠偏，纠偏量在0.5mm；同时极片缓存组件120包括缓存机构与张力机构，确保每次送片的长度一致；激光切片组件140通过激光切割，将卷料切割为极片；最后收料组件150将极片收集起来。
如图4所示，极片放卷纠偏组件110包括三相电机111、伺服电机112、传感器113和气缸114。
卷料115采用气压轴胀紧，通过三相电机111放卷，当卷料跑偏时，传感器113会将信号给伺服电机112将其纠正。当卷料115用完后，尾端由气缸114压紧，然后换上新卷料。可将新卷料的端口与上一卷料尾端粘合起来，节省材料与对齐时间。
如图5所示，极片缓存组件120包括配重辊121和传感器122。
极片通过配重辊1201张紧，通过传感器1202判断何时放卷以及放卷的速度。
如图6所示，极片送片组件130包括气缸131、上压辊132、下压辊133和伺服电机134。
穿片时，气缸131将上压辊132提起，穿完片后，再将上压辊132压下与下压辊133合拢，启动伺服电机134通过两辊之间的摩擦力带动极片向前移动完成送片动作。
如图7所示，激光切片组件140包括X轴141、Y轴142、Z轴143和切割炬高度微调机构144。
激光切片组件140采用X轴141、Y轴142、Z轴143三坐标机构，龙门式机架上设有光纤激光器切割系统以及用于切割炬与极片之间的切割位置保持上下最优小距离的切割炬高度微调机构1404。采用伺服电机驱动激光头，可以实现数字化控制，适应多规格极片切割加工，节约刀模更换的成本。采用龙门式工作台刚度好，稳定性高。
如图8所示，极片收料组件150包括限料吸盘151和放料吸盘152。
极片收料组件150安装在极片送片组件140的Y轴142上。取料吸盘151将待切割的料吸起放于指定位置，同步放料吸盘152将已切割好的极片吸起放于正、负称重分选机中。
本发明的分选机，其一种实施方式，如图9所示，包括入料装置210、分选装置220和出料装置230。。分选装置可以为称重分选装置220。
卷料经过制片机后，制成负极片或正极片，然后经过分选机把负极片或正极片分成符合标准的OK档和偏重或偏轻NO档。
如图10所示，入料装置210包括极盒组件211、转盘组件2102，顶料组件213组成，当激光切片机将切割好的极片放入极盒组件达到一定厚度后，转盘由电机带动分割器旋转180°，然后顶料组件将极片顶起到一定高度以便称重分选装置的吸盘吸料。
如图11所示，在一种实施方式中，称重分选装置220采用三相电机驱动，四等份分割器定位。称重分选装置220包括称重组件221，转盘组件222，废料回收组件223组成。入料装置210送过来的极片从吸料位A吸起，顺时针旋转90°后到达称重位B，称完重后再顺时针旋转90°到达出料位C，若极片重量在合格范围内，则将其放入出料系统的料盒，不合格的极片继续顺时针旋转90°到达废料回收位D，将其放入废料回收组件223的料盒。
在一种实施方式中，出料装置230可以与入料装置210的结构相同，当称重分选装置220将合格的极片放入极盒组件211达到一定厚度后，转盘由电机带动分割器旋转180°，然后顶料组件213将极片顶起到一定高度以便正极制袋机600与叠片机300的吸盘吸料。
如图12所示，在一种实施方式中，正极制袋机600包括正极制袋组件630。
正极制袋机600还可以包括极片搬运组件610、极片次定位组件620和拉袋接袋组件640。正极制袋是为了正极的涂布层上下均有一层隔膜，涂布层的四周通过热焊或超声波形成焊缝（极耳位除外），这样正极的涂布层形成了一单独的正极袋。在正极袋与负极在叠片时，正极与负极之间始终有一层隔膜，正极袋对大型动力电池的性能起着重要的作用。
如图13所示，极片搬运组件610包括气缸611、第一吸盘612、第二吸盘613和伺服电机614。
当气缸611伸出时，第一吸盘612从正极分选机出料系统的料盒中吸起极片，同时第二吸盘613从极片次定位组件中吸起已定好位的极片，通过伺服电机614搬运到指定位置，能实现高精度重复定位，然后气缸611缩回，将第一吸盘612吸住的极片放入次定位组件，将第二吸盘613吸住的极片放入正极制袋组件630。
如图14所示，极片次定位组件620包括第一气缸621、第二气缸622和伺服电机623。
第一气缸621与第二气缸622每动作一次将限制好一片极片的X、Y方向的自由度。当正极称重分选机出料系统旋转换料前，极片次定位伺服电机623推动整个次定位台避开让位。
如图15所示，正极制袋组件630包括下支撑座631、制袋第一气缸632和制袋第二气缸633。
当极片搬运组件将已定位好的极片放在下支撑座631上并退回原位后，此时极片上下面各有一层隔膜，然后制袋第一气缸632伸出，其上的压辊将上下隔膜合紧压平，极片被包裹其中，制袋第二气缸3303再伸出，其上加热后的刀模将隔膜沿着极片外沿热封焊起来，然后制袋第二气缸633带着刀模缩回，制袋第一气缸632带着压辊再缩回，至此制成一个除极耳外露密封的正极袋。
如图16所示，拉袋接袋组件包括第一夹爪641、第二夹爪642、第一伺服电机643、第二伺服电机644、第三伺服电机649、第一气缸645、第一气缸643、第二气缸646、第三气缸647和第四气缸648。
制完袋后，第一夹爪641合并夹紧极片袋的前端，第一伺服电机643带动其向左运动到指定位置，同时第二夹爪642张开，第二伺服电机644带动其向右运动到指定位置再合并，夹住下一极片袋的前端。第一气缸645带着吸盘伸出吸住极片袋上表面，然后第二气缸646带着热切刀伸出，切断相邻两袋之间的接口位后缩回，至此完成拉袋动作。第三气缸647带着大真空托板伸出，吸住极片袋下表面，第一气缸645带着切断真空后的吸盘缩回，第一夹爪641张开，在第一伺服电机643带动下继续向左运动一定位置后，第四气缸648带着小真空托板伸出吸住极片袋剩余部分的下表面，然后第三气缸647与第四气缸648拖着极片袋同时缩回，第三伺服电机649启动，带动极片袋到指定位置以便叠片机吸片。至此完成接袋动作。
在一种实施方式中，本发明的叠片机300，如图17所示，可选用制袋式叠片机，包括叠装组件320和外包隔膜组件340。
本发明的叠片机300还可以包括负极片接片组件310和机械手搬运组件330。
负极片接片组件310用于接收从负极分选机分选出来的合格负极片；叠装组件320用于接收从正极制袋机输出的正极袋，并完成负极片与正极袋的叠装；机械手搬运组件330用于将叠装合的负极片和正极袋搬运至外包隔膜组件340，外包隔膜组件340用于将叠装后的负极片和正极袋外包隔膜。叠片机300通过叠片工艺，把负极片，正极袋，负极片，正极袋，负极片……依次叠起来，直到完成叠片工艺所要求的叠片数量，然后外包PET塑料板或隔膜，贴高温胶，制成芯包。
如图18所示，负极片接片组件310包括第一气缸311、吸盘312、伺服电机313和第二气缸314。第一气缸311带动吸盘312动作，从负极分选机200出料系统的料盒中吸起负极片，然后在伺服电机313带动下回到次定位组件上方，第一气缸311带动吸盘312动作放下负极片，第二气缸314再动作，负极片的X、Y方向被定位。
如图19所示，叠装组件320包括第一气缸321、第一吸盘322、第二气缸323、第二吸盘324、第三气缸325、第四气缸326、伺服电机327和第五气缸328。
第一气缸321带动第一吸盘322动作，从正极制袋机的真空托板上吸起正极袋，同时第二气缸323带动件第二吸盘324伸出，放下从负极次定位组件中搬运过来的负极片到叠片台上。第三气缸325缩回后第四气缸326再缩回压住叠片台上的负极片，然后第二气缸323带动第二吸盘324缩回。伺服电机327带动吸着正极袋的第一吸盘322和第二吸盘324向右运动，直到将第一吸盘322停顿到叠片台上方，将第二吸盘324停顿到负极次定位上方，然后第一气缸321带动第一吸盘322伸出释放下正极袋，第三气缸325伸出第四气缸326再伸出后，第三气缸325缩回第四气缸326再缩回，压住叠片台上重叠起来的负极片与正极袋，然后第一气缸321带动第一吸盘322再缩回。与此同时第二气缸323带动第二吸盘324从负极次定位组件中吸起下一片负极片，依此循环直到完成设定的叠片数。然后第五气缸328带动整个叠片台运动到指定位置以便机械手搬运组件330搬料。
如图20所示，机械手搬运组件330包括第一气缸331、第二气缸332、气爪333、伺服电机334、机械手搬运组件第三气缸335和机械手搬运组件第四气缸336。
当叠装组件的第五气缸328带动叠片台与叠好的电芯运动到指定位置后，第一气缸331伸出，第二气缸332缩回，然后气爪333合拢夹紧电芯，第一气缸331再缩回将电芯提离叠片台。伺服电机334启动，将电芯搬运到外包隔膜平台上方，然后第一气缸331伸出，气爪333张开，第二气缸332伸出，第一气缸331缩回，如此电芯被放置于底部已垫有一层隔膜的外包隔膜平台上。第三气缸335带动压辊起压住隔膜的作用，第四气缸336带动热封刀起将外包隔膜接口热封起来的作用。
如图21所示，外包隔膜组件包括第一伺服电机341、第一气爪342、第二伺服电机343、第二气爪344、第一气缸345、第二气缸346、大压辊347、第三气缸348、小压辊349和电机3410。
第一伺服电机341带动第一气爪342夹紧隔膜的一端向左运动到指定位置后第一气爪342张开，同时第二伺服电机343带动张开的第二气爪344向右运动到指定位置后合拢夹紧隔膜，第一气缸345带动热切刀动作切断隔膜。然后机械手将电芯放置于外包隔膜平台上，如此电芯底部就有了一层隔膜。第二气缸346伸出，带动大压辊347向左运动将隔膜包住电芯的右上半部，接着第三气缸348伸出，带动小压辊349向右运动将隔膜包住电芯的左上半部，由于第三气缸348的缸径比第二气缸346大，小压辊349将推动大压辊347向右运动，这样在电芯中间的正上方将有一段隔膜重叠区，机械手搬运组件的第四气缸336带动热封刀动作，将隔膜重叠区热封焊起来，至此将整个电芯外部都用一层隔膜包起来。外包隔膜组件电机3410起隔膜放卷作用。
本发明的锂离子电池芯包制备方法，其一种实施方式，包括以下步骤：
通过负极制片机将极片材料制成负极片，通过第一传送装置将所述负极片传送到负极分选机；
按预定标准通过所述负极分选机从所述负极片中筛选出合格的负极片，通过第二传送装置将所述合格的负极片传送到叠片机；
通过正极制片机将极片材料制成正极片，通过第三传送装置将所述正极片传送到正极分选机；
按预定标准通过所述正极分选机从所述正极片中筛选出合格的正极片，通过第四传送装置将所述合格的正极片传送到正极制袋机；
通过所述正极制袋机将所述合格的正极片制成正极袋，通过第五传送装置将所述正极袋传送到叠片机；
通过叠片机将所述正极袋与所述合格的负极片进行叠片，制成芯包。
在一种实施方式中，将极片材料制成正极片具体通过五金冲模制片机制片、圆压圆模切制片机制片或激光制片机制片中的任意一种实现；将极片材料制成负极片具体通过五金冲模制片机制片、圆压圆模切制片机制片或激光制片机制片中的任意一种实现。在本具体实施方式中，采用激光制片机进行制片。
在一种实施方式中，按预定标准从负极片中筛选出合格的负极片包括按重量标准分选出合格的负极片；按预定标准从正极片中筛选出合格的正极片包括按重量标准分选出合格的正极片。
在一种实施方式中，对分选出的合格正极片进行制袋具体通过滚压式热焊制袋或滚压式超声波制袋实现。
本发明中，由于采用激光切片机进行切片，不用刀模，更换方便，切出来的片无掉粉，毛刺少。本发明的激光切片经过了实验，对激光切片后切边的物理特性与化学特性均作了测试，证明切片后不会影响电池的性能。
本发明中，通过圆盘式结构布置各工位，可以是精密电子称，CCD视觉检测系统，可以按重量，或涂布质量，或切片后极片四周的质量来分选，还可以采用直线式来布置各工位，此工位对电芯的性能的一致性有着重要的作用。
本发明中，采用热焊式制袋对正极片进行制袋，焊出的正极袋平整，隔膜无拉边，焊缝一致性好，焊接效果可调。本发明的正极制袋经过了实验，热焊后，焊缝的一致性，焊缝的质量及隔膜的平整度均作了测试，均达到了制袋的工艺标准。
本发明中，叠片机的主要功能包括负极片与正极袋的叠装，叠至设定的数量后，在第二个工位进行外包隔膜或PET塑胶板，在第三个工位进行贴高温胶，不会影响叠装后极片的对齐度，不会对极片与隔膜有二次损坏，对电池的性能有着重要的作用。本发明的制袋式叠片机经过了实验，吸盘能够对正极袋吸起，进行叠片，对外包隔膜进行了实验，证明了外包隔膜的松紧度服合电池的芯包工艺标准。
以上内容是结合具体的实施方式对本发明所作的进一步详细说明，不能认定本发明的具体实施只局限于这些说明。对于本发明所属技术领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干简单推演或替换，都应当视为属于本发明的保护范围。

Claims (15)

  1. 一种锂离子电池芯包制备 方法， 其特征在于，包括以下步骤：
    通过负极制片机将极片材料制成负极片，通过第一传送装置将所述负极片传送到负极分选机；
    按预定标准通过所述负极分选机从所述负极片中筛选出合格的负极片，通过第二传送装置将所述合格的负极片传送到叠片机；
    通过正极制片机将极片材料制成正极片，通过第三传送装置将所述正极片传送到正极分选机；
    按预定标准通过所述正极分选机从所述正极片中筛选出合格的正极片，通过第四传送装置将所述合格的正极片传送到正极制袋机；
    通过所述正极制袋机将所述合格的正极片制成正极袋， 通过第五传送装置将所述正极袋传送到叠片机；
    通过叠片机将所述正极袋与 所述合格的负极片 进行叠片，制成芯包。
  2. 如权利要求1所述的锂离子电池芯包制备 方法 ，其特征在于，所述将极片材料制成正极片具体通过五金冲模制片机制片、圆压圆模切制片机制片或激光制片机制片中的任意一种实现。
  3. 如权利要求1所述的锂离子电池芯包制备 方法 ，其特征在于，所述将极片材料制成负极片具体通过五金冲模制片机制片、圆压圆模切制片机制片或激光制片机制片中的任意一种实现。
  4. 如权利要求1所述的锂离子电池芯包制备 方法 ，其特征在于，所述按预定标准从所述正极片中筛选出合格的正极片包括按重量标准分选出合格的正极片。
  5. 如权利要求1所述的锂离子电池芯包制备 方法 ，其特征在于，所述按预定标准从所述负极片中筛选出合格的负极片包括按重量标准分选出合格的负极片。
  6. 如权利要求1所述的锂离子电池芯包制备 方法 ，其特征在于， 对分选出的合格正极片进行制袋具体通过滚压式热焊制袋或滚压式超声波制袋实现 。
  7. 一种锂离子电池芯包制备系统，其特征在于，包括顺序摆放的以下设备：负极制片机、负极分选机、叠片机、正极制袋机、正极分选机和正极制片机；所述设备两两之间设置有传送设备，所述传送设备用于输送制备芯包的材料；所述负极制片机用于将极片材料制成负极片；所述负极分选机用于按预定标准从所述负极片中筛选出合格的负极片；所述正极制片机用于将极片材料制成正极片；所述正极分选机用于按预定标准从所述正极片中分选出合格的正极片；所述正极制袋机用于将所述 合格的正极片制成正极袋；所述叠片机用于将正极袋与所述合格的负极片进行叠片，制成芯包 。
  8. 如权利要求7所述的锂离子电池芯包制备系统，其特征在于，所述将极片材料制成正极片具体通过五金冲模制片机制片、圆压圆模切制片机制片或激光制片机制片中的任意一种实现。
  9. 如权利要求7所述的锂离子电池芯包制备系统，其特征在于，所述将极片材料制成负极片具体通过五金冲模制片机制片、圆压圆模切制片机制片或激光制片机制片中的任意一种实现。
  10. 如权利要求7所述的锂离子电池芯包制备系统，其特征在于，所述正极分选机包括驱动装置以及顺次连接的入料装置、分选装置和出料装置，所述驱动装置用于驱动所述分选装置，所述分选装置包括入料工位和出料工位，使所述正极片从入料工位进入所述分选装置，使合格的正极片从出料工位输出。
  11. 如权利要求10 所述的锂离子电池芯包制备系统，其特征在于，所述分选装置还包括称重组件、转盘组件和废料回收组件，所述按预定标准从所述正极片中分选出合格的正极片包括所述称重组件按重量标准分选出合格的正极片，所述转盘组件将合格的正极片传送到出料工位，将不合格的正极片输送到废料回收组件。
  12. 如权利要求7所述的锂离子电池芯包制备系统，其特征在于，所述负极分选机包括驱动装置以及顺次连接的入料装置、分选装置和出料装置，所述驱动装置用于驱动所述分选装置，所述分选装置包括入料工位和出料工位，使所述负极片从入料工位进入所述分选装置，使合格的负极片从出料工位输出。
  13. 如权利要求12 所述的锂离子电池芯包制备系统，其特征在于，所述分选装置还包括称重组件、转盘组件和废料回收组件，所述按预定标准从所述负极片中分选出合格的负极片包括所述称重组件按重量标准分选出合格的负极片，所述转盘组件将合格的负极片传送到出料工位，将不合格的负极片输送到废料回收组件。
  14. 如权利要求7所述的锂离子电池芯包制备系统，其特征在于， 对分选出的合格正极片进行制袋具体通过滚压式热焊制袋或滚压式超声波制袋实现 。
  15. 如权利要求8或9所述的锂离子电池芯包制备系统，其特征在于，所述激光制片机包括极片放卷纠偏组件、极片缓存组件、极片送片组件、激光切片组件和极片收料组件，所述极片放卷纠偏组件用于纠正跑偏的卷料并将卷料输送到所述极片缓存组件，所述极片缓存组件用于控制放卷的时间和速度并将卷料输送到所述极片送片组件，所述极片送片组件用于将卷料输送到所述激光切片组件，所述激光切片组件用于将卷料切割成正极片和负极片并输送到所述极片收料组件，所述极片收料组件用于将所述正极片和负极片分别输送到所述正极分选机和所述负极分选机。
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