Universal lithium ion battery sheeting and winding integrated machine

Abstract

The utility model discloses a general lithium ion battery piece making winding integrated machine, including frame, the frame is from left to right in proper order with the up and down pole piece unwinding device, the up and down pole piece welding device, the up and down rubberizing device, the up and down pole piece cutting knife device, the up and down pole piece positioning device and the up and down pole piece into piece device, the up and down pole lug feeding device is arranged to the up and down pole piece welding device one side, and the right side of up and down pole piece into piece device is in proper order with the electric core winding device, the winding core rubberizing device, the blanking pressure core short circuit measuring device and short circuit bad sorting device, and the lower left side of up and down pole piece into piece device is equipped with the up and down diaphragm unwinding device and the up and down diaphragm static electricity removing device. The utility model degree of automation is high, can satisfy the automation operation production need, promotes production efficiency, still can avoid manual contact pole piece material, has promoted the consistency of battery electric core product.

Description

Technical Field

[0001] This utility model relates to the field of lithium-ion battery manufacturing technology, specifically a general-purpose integrated machine for lithium-ion battery sheet forming and winding. Background Technology

[0002] Lithium-ion batteries are characterized by high energy density and portability, making them a popular energy source in fields such as communications, digital cameras, camcorders, and laptops. Winding machines, as equipment used in lithium-ion battery production, work by winding positive electrode sheets, negative electrode sheets, and separators in a specific layer sequence to form a battery cell. The lithium-ion battery industry uses both semi-automatic and fully automatic winding machines. However, to ensure production quality, personnel still need to constantly monitor the equipment during the winding process and manually adjust certain mechanisms on the winding machine when necessary, such as manually adjusting the electrode sheets. This manual operation hinders automated production and cannot meet the requirements of automated operation; furthermore, contact between battery electrode materials can easily lead to inconsistent quality in subsequent battery products. Utility Model Content

[0003] The purpose of this utility model is to provide a universal lithium-ion battery sheet forming and winding integrated machine that can meet the needs of automated production, improve production efficiency, avoid manual contact with electrode materials, and improve the consistency of battery cell products. This solves the problem mentioned in the background art that existing semi-automatic and fully automatic winding machines cannot meet the needs of automated production and have low battery product consistency.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A general-purpose lithium-ion battery sheet making and winding integrated machine includes a frame. From left to right, the frame is provided with an upper and lower electrode sheet unwinding device, an upper and lower electrode sheet welding device, an upper and lower adhesive application device, an upper and lower electrode sheet cutting device, an upper and lower electrode sheet positioning device, and an upper and lower electrode sheet feeding device. An upper and lower electrode tab supply device is provided on one side of the upper and lower electrode sheet welding device. On the right side of the upper and lower electrode sheet feeding device, a cell winding device, a core end adhesive application device, a core pressing and short circuit testing device, and a short circuit defect sorting device are provided. On the lower left side of the upper and lower electrode sheet feeding device, an upper and lower separator unwinding device and an upper and lower separator static electricity removal device are provided.

[0006] Preferably, the upper and lower electrode welding device includes an upper electrode welding device and a lower electrode welding device that are positioned opposite each other. The upper electrode welding device includes a lower welding mold and an upper welding mold that are positioned opposite each other. The lower welding mold includes a super welding seat, clamping plates, rollers, fixing blocks, and a welding seat. The super welding seat is connected to the side of the frame. The two clamping plates are positioned opposite each other on the top surface of the super welding seat. The two ends of the rollers are respectively connected to the two clamping plates. The fixing block is positioned on the top surface of the super welding seat. The welding seat is laid on the top surface of the fixing block. The top surface of the welding seat has a groove for the electrode tab to pass through.

[0007] Preferably, the welding lower mold includes a third cylinder, a connecting block, and a dust suction rod. The third cylinder is mounted on one of the clamping plates, and the piston rod of the third cylinder is connected upward to the connecting block. One end of the dust suction rod is connected to the connecting block, and the other end extends laterally to one side of the welding seat.

[0008] Preferably, the outer peripheral wall of the vacuum cleaner is provided with a vacuum port and / or a vacuum slit.

[0009] Preferably, the welding upper mold includes an ultrasonic welding upper seat, a mounting plate, clamping blocks, a fourth cylinder, and an ultrasonic welding device. The ultrasonic welding upper seat is fixedly mounted on the side of the frame, the mounting plate is flexibly mounted below the ultrasonic welding upper seat, the two clamping blocks are positioned opposite each other on the bottom surface of the mounting plate, the ultrasonic welding device is connected to the two clamping blocks and located above the welding seat, the fourth cylinder is mounted on the top surface of the ultrasonic welding upper seat, and the piston rod of the fourth cylinder passes through the ultrasonic welding upper seat and connects downward to the mounting plate. The ultrasonic welding device has a welding head that matches the groove of the welding seat.

[0010] Preferably, the upper and lower tab supply device includes an upper tab supply device and a lower tab supply device that are opposite each other. The upper tab supply device includes a base fixed to the side of the frame, a base plate movably disposed on the base, and a tab unwinding mechanism, a first track seat, a clamping mechanism, and a cutting mechanism that are sequentially distributed on the base plate along the direction perpendicular to the side of the frame. The top surface of the first track seat is provided with a guide groove for the tab to pass through.

[0011] Preferably, the upper tab supply device includes a tab correction mechanism, which includes a first lead screw, a first motor, and a first slider. The first lead screw is rotatably disposed at the bottom of the base, the first motor is mounted at one end of the base, and the output shaft of the first motor is connected to one end of the first lead screw. The base has a sliding groove extending through its upper and lower surfaces along its length. The bottom end of the first slider is connected to the first lead screw by a threaded nut, and the first slider passes upward through the top of the sliding groove and is connected to the bottom surface of the base plate.

[0012] Preferably, the electrode correction mechanism includes a fixed base, a second guide rail, a second slider, an adjusting base, an adjusting screw, and an electrode correction detector. The fixed base is connected to the side of the base plate, the second guide rail is laid along the length of the base plate on the side of the fixed base, the second slider is movably mounted on the second guide rail, the adjusting base is located at one end of the fixed base, one end of the adjusting screw is rotatably mounted on the adjusting base, and the other end is connected to the second slider through a threaded nut. The electrode correction detector is mounted on the second slider.

[0013] Preferably, the clamping mechanism includes a third guide rail, a third slider, a second motor, a second lead screw, a second track seat, a vertical plate, a first cylinder, and a first pressure block. The third guide rail is laid in the middle of the top surface of the base plate. The third slider is movably mounted on the third guide rail. The second motor is mounted on the first track seat. The second lead screw is rotatably mounted on the first track seat. One end of the second lead screw is connected to the output shaft of the second motor, and the other end is connected to the third slider through a threaded nut. The second track seat is laid on the top surface of the third slider. The vertical plate is erected on the top surface of the third slider. The first cylinder is mounted on the upper side wall of the vertical plate. The piston rod of the first cylinder is connected downward to the first pressure block located above the second track seat.

[0014] Preferably, the upper and lower electrode feeding devices include an upper electrode feeding device and a lower electrode feeding device that are positioned opposite each other. An upper pressing device is provided at the end of the upper electrode feeding device, and a lower pressing device is provided at the end of the lower electrode feeding device. The upper pressing device includes a guide plate, a mounting block, a fifth cylinder, a lifting plate, and pressure rollers. The guide plate is fixedly disposed on the side of the frame, and the mounting block is fixedly disposed above the guide plate. The fifth cylinder is mounted on the mounting block, and the piston rod of the fifth cylinder passes through the mounting block and is connected downward to the lifting plate. Several pressure rollers are rotatably disposed on the lifting plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are: it automatically completes the processes of electrode unwinding, electrode tab welding, electrode conveying, deviation correction, material feeding, cell winding, cell testing and sorting. The whole process is automated without human intervention, and can meet the needs of automated production, improve production efficiency, avoid human contact with electrode materials, and improve the consistency of battery cell products. Attached Figure Description

[0016] Figure 1 This is a perspective view of the general-purpose lithium-ion battery sheet making and winding integrated machine of this utility model;

[0017] Figure 2 This is a side view of the general-purpose lithium-ion battery sheet making and winding integrated machine of this utility model;

[0018] Figure 3This is a perspective view of the upper electrode supply device of this utility model;

[0019] Figure 4 This is a perspective view of the clamping and feeding mechanism of this utility model;

[0020] Figure 5 This is a perspective view of the cutting mechanism of this utility model;

[0021] Figure 6 This is a perspective view of the upper electrode welding device of this utility model;

[0022] Figure 7 This is a perspective view of the upper pressing device of this utility model.

[0023] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Positive electrode unwinding device; 3. Upper electrode welding device; 31. Lower welding die; 311. Ultrasonic welding seat; 312. Clamping plate; 313. Roller; 314. Fixing block; 315. Welding seat; 316. Third cylinder; 317. Connecting block; 318. Dust suction rod; 32. Upper welding die; 321. Ultrasonic welding upper seat; 322. Mounting plate; 323. Clamping block; 324. Fourth cylinder; 325. Ultrasonic welding device; 326. Guide rod; 327. Limiting screw; 4. 5. Top adhesive applicator; 6. Positive electrode sheet alignment device; 7. Top pressing device; 8. Guide plate; 9. Mounting block; 10. Fifth cylinder; 11. Lifting plate; 12. Pressure roller; 13. Upper tab supply device; 14. Base; 15. Base plate; 16. Tab unwinding mechanism; 17. First track seat; 18. Clamping mechanism; 19. Third guide rail; 10. Third slider; 11. Second motor; 12. Second lead screw; 13. Second track seat; 14. Vertical plate; 15. First cylinder; 16. First... 759. Pressing block; 76. Alignment block clamp; 77. Cutting mechanism; 761. Third track seat; 762. Vertical plate; 763. Second cylinder; 764. Second pressing block; 765. Cutter; 766. Dust collection box; 77. Electrode correction mechanism; 771. First motor; 772. First guide rail; 773. Fixed seat; 774. Second guide rail; 775. Second slider; 776. Adjusting seat; 777. Adjusting screw; 778. Electrode correction detector; 8. Negative electrode unwinding device; 9. Lower electrode welding device; 1 0. Lower adhesive applicator; 11. Negative electrode sheet alignment device; 12. Lower pressing device; 13. Lower tab supply device; 14. Cell winding device; 15. Upper diaphragm unwinding device; 16. Lower diaphragm unwinding device; 17. Feeding, pressing, and short-circuit testing device; 18. Core tail adhesive applicator; 19. Short-circuit defect sorting device; 20. Positive electrode sheet slicing device; 21. Negative electrode sheet slicing device; 22. Upper electrode sheet loading device; 23. Lower electrode sheet loading device; 24. Upper diaphragm static eliminator; 25. Lower diaphragm static eliminator. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-7 A general-purpose lithium-ion battery sheet making and winding integrated machine includes a frame. From left to right, the lower left part of the frame is provided with an upper and lower electrode sheet unwinding device, an upper and lower electrode sheet welding device, an upper and lower adhesive application device, an upper and lower electrode sheet cutting device, an upper and lower electrode sheet positioning device, and an upper and lower electrode sheet feeding device. An upper and lower electrode tab supply device is provided on one side of the upper and lower electrode sheet welding device. On the right side of the upper and lower electrode sheet feeding device, a cell winding device 14, a core end adhesive application device 18, a core pressing and short circuit testing device 17, and a short circuit defect sorting device 19 are provided. An upper and lower separator unwinding device and an upper and lower separator static electricity removal device are provided on the lower left side of the upper and lower electrode sheet feeding device.

[0026] The upper and lower electrode unwinding device includes a positive electrode unwinding device 2 and a negative electrode unwinding device 8, which are positioned vertically opposite each other. The upper and lower electrode welding device includes an upper electrode welding device 3 and a lower electrode welding device 9, which are positioned vertically opposite each other. The upper and lower adhesive application device includes an upper adhesive application device 4 and a lower adhesive application device 10, which are positioned vertically opposite each other. The upper and lower electrode cutting device includes a positive electrode slicing device 20 and a negative electrode slicing device 21, which are positioned vertically opposite each other. The upper and lower electrode positioning device includes a positive electrode alignment device 5 and a negative electrode alignment device 11, which are positioned vertically opposite each other. The upper and lower electrode feeding device includes an upper electrode feeding device 22 and a lower electrode feeding device 23, which are positioned vertically opposite each other. An upper pressing device 6 is provided at the end of the upper electrode feeding device, and a lower pressing device 12 is provided at the end of the lower electrode feeding device. The upper and lower electrode tab supply device includes an upper electrode tab supply device 7 and a lower electrode tab supply device 13, which are positioned vertically opposite each other. The upper and lower diaphragm unwinding device includes an upper diaphragm unwinding device 15 and a lower diaphragm unwinding device 16 that are opposite each other. The upper and lower diaphragm static elimination device includes an upper diaphragm static elimination device 24 and a lower diaphragm static elimination device 25 that are opposite each other.

[0027] Please see Figure 2During operation, the positive electrode sheet unwound by the positive electrode sheet unwinding device 2 passes sequentially through the upper electrode sheet welding device 3, the upper adhesive application device 4, the positive electrode sheet slicing device 20, the positive electrode sheet alignment device 5, the upper electrode sheet insertion device 22, and the upper pressing device 6, and is finally pulled onto the cell winding device 14. In this process, the upper electrode sheet welding device 3 welds the tabs supplied by the upper tab supply device 7 onto the positive electrode sheet; the upper adhesive application device 4 applies adhesive to both sides of the positive electrode sheet; the positive electrode sheet alignment device 5 positions and corrects the positive electrode sheet; and the upper pressing device 6 presses the positive electrode sheet before it enters the cell winding device 14, ensuring... The positive electrode sheet is stably wound onto the cell winding device 14. Similarly, the negative electrode sheet unwound by the negative electrode sheet unwinding device 8 passes sequentially through the lower electrode sheet welding device 9, the lower adhesive application device 10, the negative electrode sheet slicing device 21, the negative electrode sheet correction device 11, the lower electrode sheet insertion device 23, and the lower pressing device 12, and is finally pulled onto the cell winding device 14. At the same time, the upper diaphragm unwound by the upper diaphragm unwinding device 15 and the lower diaphragm unwound by the upper diaphragm unwinding device 15 are respectively wound onto the cell winding device 14. The cell winding device 14 finally winds the positive electrode sheet, the negative electrode sheet, the upper diaphragm, and the lower diaphragm into a cell. After the cell is wound, the core is first coated with adhesive tape by the core tail adhesive application device 18, and then the cell is unloaded to the core pressing and short-circuit testing device 17 for pressing and testing. Then, the good and defective products are sorted by the short-circuit defect sorting device 19. The entire process is automated, without human intervention. It automatically completes processes such as electrode unwinding, electrode tab welding, electrode conveying, deviation correction, material feeding, cell winding, cell testing, and sorting. The high degree of automation can meet the needs of automated production, improve production efficiency, and avoid human contact with electrode materials, thus improving the consistency of battery cell products.

[0028] Please see Figure 3 The upper tab supply device 7 has the same structure as the lower tab supply device 13. The upper tab supply device 7 includes a base 71 fixed to the side of the frame 1, a base plate 72 movably disposed on the base 71, and a tab unwinding mechanism 73, a first track seat 74, a clamping mechanism 75, and a cutting mechanism 76 sequentially distributed on the base plate 72 along the direction perpendicular to the side of the frame 1. In this embodiment, the top surface of the first track seat 74 is provided with a guide groove for the tab to pass through. The tab unwinding mechanism 73 is used to unwind the tab and guide it into the guide groove of the first track seat 74, and the clamping mechanism 75 further pulls the tab to the cutting mechanism 76. Then, the cutting mechanism 76 cuts the tab into segments, and the cut tab segments are welded to the positive electrode sheet by the upper electrode sheet welding device 3.

[0029] Please see Figure 3 and Figure 5The upper tab supply device 7 includes a tab correction mechanism 77, which includes a first lead screw (not shown), a first motor 771, and a first slider (not shown). The first lead screw is rotatably mounted at the bottom of the base 71, and the first motor 771 is mounted at one end of the base 71. The output shaft of the first motor 771 is connected to one end of the first lead screw to drive the first lead screw to rotate. The base 71 has a sliding groove (not shown) extending through its upper and lower surfaces along its length. The bottom end of the first slider is connected to the first lead screw by a threaded nut, and the first slider passes upward through the top of the sliding groove and connects to the bottom surface of the base plate 72.

[0030] In this embodiment, the top surface of the base 71 is provided with two parallel first guide rails 772, and the base plate 72 is movably mounted on the two first guide rails 772.

[0031] The electrode correction mechanism 77 includes a fixed base 773, a second guide rail 774, a second slider 775, an adjusting base 776, an adjusting screw 777, and an electrode correction detector 778. The fixed base 773 is connected to the side of the base plate 72 and located on one side of the cutting mechanism 76. The second guide rail 774 is laid along the length of the base plate 72 on the side of the fixed base 773. The second slider 775 is movably mounted on the second guide rail 774. The adjusting base 776 is located at one end of the fixed base 773. One end of the adjusting screw 777 is rotatably mounted on the adjusting base 776, and the other end is connected to the second slider 775 via a threaded nut. The electrode correction detector 778 is mounted on the second slider 775. In this embodiment, the electrode correction detector 778 is an infrared correction sensor.

[0032] When it is necessary to adjust the position of the electrode correction detector 778 on the fixed base 773, rotate the adjusting screw 777. Through the interaction between the adjusting screw 777 and the threaded nut, the adjusting screw 777 drives the second slider 775 to move axially along the second guide rail 774, so that the electrode correction detector 778 moves to the appropriate detection position. By adjusting the position of the electrode correction detector 778, it is also possible to adapt to the correction detection of electrode sheets of different specifications and models.

[0033] When correcting the electrode tabs, if the electrode tab correction detector 778 detects a misalignment of the positive or negative electrode, in order to ensure that the electrode tabs are accurately welded onto the positive or negative electrode, the first motor 771 drives the first lead screw to rotate. The first lead screw then drives the first slider, the base plate 72, the electrode tab unwinding mechanism 73, the first track seat 74, the clamping mechanism 75, and the cutting mechanism 76 to move relative to the base 71, so that the electrode tabs move back and forth to align with the positive or negative electrode, thereby ensuring the electrode tab welding quality and improving the yield of battery cells.

[0034] Please see Figure 4The clamping mechanism 75 includes a third guide rail 751, a third slider 752, a second motor 753, a second lead screw 754, a second track seat 755, a vertical plate 756, a first cylinder 757, and a first pressure block 758. The third guide rail 751 is laid on the middle of the top surface of the base plate 72. The third slider 752 is movably mounted on the third guide rail 751. The second motor 753 is mounted on the first track seat 74. The second lead screw 754 is rotatably mounted on the first track seat 74. One end of the second lead screw 754 is connected to the output shaft of the second motor 753, and the other end is connected to the third slider 752 through a threaded nut. The second track seat 755 is laid on the top surface of the third slider 752. In this embodiment, the top surface of the second track seat 755 is flush with the top surface of the first track seat 74; the vertical plate 756 is erected on the top surface of the third slider 752 and located on one side of the second track seat 755; the first cylinder 757 is installed on the upper side wall of the vertical plate 756; and the piston rod of the first cylinder 757 is connected downward to the first pressure block 758 located above the second track seat 755.

[0035] The third slider 752 is connected to a centering block clamp 759 near the cutting mechanism 76. The centering block clamp 759 has an S-shaped channel inside, and a limiting groove (not shown) is formed on the bottom wall of the channel for the electrode tab to pass through. The centering block clamp 759 has the functions of supporting, tensioning and positioning the electrode tab.

[0036] After the cutting mechanism 76 cuts off the front end of the electrode tab, the first cylinder 757 drives the first pressing block 758 to press the electrode tab onto the second track seat 755; then the second motor 753 is started, and the second motor 753 drives the slider and the straightening block clamp 759 to move toward the cutting mechanism 76, so that the electrode tab at one end of the straightening block clamp 759 moves onto the cutting mechanism 76.

[0037] Please see Figure 5 The cutting mechanism 76 includes a third track seat 761, a vertical plate 762, a second cylinder 763, a second pressure block 764, and a cutter 765. The third track seat 761 is fixed to the top surface of the base plate 72. The vertical plate 762 is erected on the bottom surface of the base plate 72, located on one side of the third track seat 761. The second cylinder 763 is installed at the top of the vertical plate 762. The piston rod of the second cylinder 763 is connected downward to the second pressure block 764 located above the third track seat 761. The cutter 765 is vertically mounted above the third track seat 761. The edge of the third track seat 761 is provided with a blade groove adapted to the cutter 765. In this embodiment, the cutter 765 is driven to move up and down by a cylinder.

[0038] The third track seat 761 has a dust collection box 766 on one side of the blade groove. The dust collection box 766 is used to collect dust near the blade groove, preventing debris generated by the cutter 765 and dust around the blade groove from adhering to the electrode tabs, and also reducing mechanical failures caused by dust accumulation. In this embodiment, the dust collection box 766 is square in shape and has a dust suction port for absorbing dust. The dust collection box 766 is connected to an external dust collection device.

[0039] When shearing the tab, the second cylinder 763 first drives the second pressure block 764 to descend until the second pressure block 764 presses the tab firmly onto the third track seat 761; then the cutter 765 descends to engage with the cutter groove, thereby cutting off the tab, and the cut tab is used to weld onto the positive or negative electrode sheet.

[0040] Please see Figure 6 The upper electrode welding device 3 includes a lower welding mold 31 and an upper welding mold 32 that are positioned opposite each other. The lower welding mold 31 includes a super welding seat 311, a clamping plate 312, a roller 313, a fixing block 314, and a welding seat 315. The super welding seat 311 is connected to the side of the frame 1. The two clamping plates 312 are arranged opposite each other on the top surface of the super welding seat 311. The two ends of the roller 313 are respectively connected to the two clamping plates 312. The fixing block 314 is arranged on the top surface of the super welding seat 311. The welding seat 315 is laid on the top surface of the fixing block 314. The top surface of the welding seat 315 has a groove for the electrode tab to pass through. In this embodiment, there are two rollers 313, which are respectively arranged on both sides of the welding seat 315; the top surface of the fixing block 314 is provided with a double station, and each of the two stations is provided with a screw hole. The welding seat 315 is provided with a stepped hole corresponding to the screw hole. The welding seat 315 can be fixed to different stations of the fixing block 314 by bolts, which is used to match different welding upper dies 32 and has good versatility.

[0041] The welding lower mold 31 includes a third cylinder 316, a connecting block 317, and a dust-collecting rod 318. The third cylinder 316 is mounted on one of the clamping plates 312, and its piston rod is connected upward to the connecting block 317. One end of the dust-collecting rod 318 is connected to the connecting block 317, and the other end extends laterally to one side of the welding seat 315. In this embodiment, the dust-collecting rod 318 is a hollow shaft, and its outer peripheral wall has a dust-collecting port and / or a dust-collecting slit. The dust-collecting rod 318 is connected to an external vacuum cleaner. When welding, the external vacuum cleaner is turned on, and dust can be absorbed through the dust-collecting port and / or dust-collecting slit on the outer peripheral wall of the dust-collecting rod 318, thereby reducing dust on the electrode sheet and tab material and improving the welding quality of the product.

[0042] The welding upper mold 32 includes an ultrasonic welding upper seat 321, a mounting plate 322, clamping blocks 323, a fourth cylinder 324, and an ultrasonic welding device 325. The ultrasonic welding upper seat 321 is fixedly mounted on the side of the frame 1. The mounting plate 322 is flexibly mounted below the ultrasonic welding upper seat 321. The two clamping blocks 323 are positioned opposite each other on the bottom surface of the mounting plate 322. The ultrasonic welding device 325 is connected to the two clamping blocks 323 and is located above the welding seat 315. The fourth cylinder 324 is mounted on the top surface of the ultrasonic welding upper seat 321. The piston rod (not shown) of the fourth cylinder 324 passes through the ultrasonic welding upper seat 321 and connects downward to the mounting plate 322.

[0043] Among them, the super-welding upper seat 321 is provided with two opposing guide rods 326 that slide and rise, and the bottom end of the guide rods 326 passes through the super-welding upper seat and connects downward to the mounting plate 322; the top surface of the mounting plate 322 is provided with two limiting screws 327 facing each other.

[0044] The ultrasonic welding device 325 has a welding head that matches the groove of the welding seat 315. When the positive electrode sheet is conveyed by the roller 313 over the welding seat 315, and the cut electrode tab is also located in the groove, the fourth cylinder 324 drives the ultrasonic welding device 325 on the mounting plate 322 to descend until the welding head presses the positive electrode sheet and the electrode tab into the groove. Then, the ultrasonic welding device 325 emits ultrasound to weld the electrode tab onto the positive electrode sheet. The structure of the lower electrode sheet welding device 9 is the same as that of the upper electrode sheet welding device 3, and will not be described again here.

[0045] Please see Figure 7 The upper pressing device 6 includes a guide plate 61, a mounting block 62, a fifth cylinder 63, a lifting plate 64, and pressure rollers 65. The guide plate 61 is fixedly mounted on the side of the frame 1 and is used to guide the positive electrode sheet. The mounting block 62 is fixedly mounted above the guide plate 61. The fifth cylinder 63 is mounted on the mounting block 62, and its piston rod passes through the mounting block 62 and is connected downwards to the lifting plate 64. Several pressure rollers 65 are rotatably mounted on the lifting plate 64, and these pressure rollers 65 are used to press the positive electrode sheet against the guide plate 61. Compared with the existing method of pressing the electrode sheet with a sponge, the pressure rollers 65 can reduce dust generation and prevent dust from contaminating the positive electrode sheet material, thereby ensuring the quality of the battery cell.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A universal lithium ion battery sheeting and winding integrated machine, comprising a rack, characterized in that: The frame is provided with an upper and lower electrode unwinding device, an upper and lower electrode welding device, an upper and lower adhesive application device, an upper and lower electrode cutting device, an upper and lower electrode positioning device, and an upper and lower electrode loading device from left to right. An upper and lower electrode tab supply device is provided on one side of the upper and lower electrode welding device. A cell winding device (14), a core tail adhesive application device (18), a core pressing and short circuit testing device (17), and a short circuit defect sorting device (19) are provided on the right side of the upper and lower electrode loading device. An upper and lower diaphragm unwinding device and an upper and lower diaphragm static elimination device are provided on the lower left side of the upper and lower electrode loading device.

2. The universal lithium-ion battery sheeting and winding integrated machine according to claim 1, characterized in that: The upper and lower electrode welding device includes an upper electrode welding device (3) and a lower electrode welding device (9) that are opposite each other. The upper electrode welding device (3) includes a lower welding mold (31) and an upper welding mold (32) that are opposite each other. The lower welding mold (31) includes a super welding seat (311), a clamping plate (312), a roller (313), a fixing block (314), and a welding seat (315). The super welding seat (311) is connected to the side of the frame (1). The two clamping plates (312) are arranged opposite each other on the top surface of the super welding seat (311). The two ends of the roller (313) are respectively connected to the two clamping plates (312). The fixing block (314) is arranged on the top surface of the super welding seat (311). The welding seat (315) is laid on the top surface of the fixing block (314). The top surface of the welding seat (315) is provided with a groove for the electrode tab to pass through.

3. The universal lithium-ion battery sheet forming and winding integrated machine according to claim 2, characterized in that: The welding lower mold (31) includes a third cylinder (316), a connecting block (317), and a dust suction rod (318). The third cylinder (316) is mounted on one of the clamping plates (312). The piston rod of the third cylinder (316) is connected upward to the connecting block (317). One end of the dust suction rod (318) is connected to the connecting block (317), and the other end extends laterally to one side of the welding seat (315).

4. The universal lithium-ion battery sheet forming and winding integrated machine according to claim 3, characterized in that: The vacuum cleaner (318) is a hollow shaft, and the outer peripheral wall of the vacuum cleaner (318) is provided with a vacuum port and / or a vacuum slit.

5. The universal lithium-ion battery sheet forming and winding integrated machine according to claim 2, characterized in that: The welding upper mold (32) includes an ultrasonic welding upper seat (321), a mounting plate (322), clamping blocks (323), a fourth cylinder (324), and an ultrasonic welding device (325). The ultrasonic welding upper seat (321) is fixedly mounted on the side of the frame (1). The mounting plate (322) is flexibly mounted below the ultrasonic welding upper seat (321). The two clamping blocks (323) are positioned opposite each other on the bottom surface of the mounting plate (322). The ultrasonic welding device (325) is connected to the two clamping blocks (323) and is located above the welding seat (315). The fourth cylinder (324) is mounted on the top surface of the ultrasonic welding upper seat (321). The piston rod of the fourth cylinder (324) passes through the ultrasonic welding upper seat (321) and connects downward to the mounting plate (322). The ultrasonic welding device (325) has a welding head that is adapted to the groove of the welding seat (315).

6. The universal lithium-ion battery sheet forming and winding integrated machine according to claim 1, characterized in that: The upper and lower tab supply device includes an upper tab supply device (7) and a lower tab supply device (13) that are opposite each other. The upper tab supply device (7) includes a base (71) fixed to the side of the frame (1), a base plate (72) movably disposed on the base (71), and a tab unwinding mechanism (73), a first track seat (74), a clamping mechanism (75), and a cutting mechanism (76) that are sequentially distributed on the base plate (72) along the direction perpendicular to the side of the frame (1). The top surface of the first track seat (74) is provided with a guide groove for the tab to pass through.

7. The universal lithium-ion battery sheet forming and winding integrated machine according to claim 6, characterized in that: The upper tab supply device (7) includes a tab correction mechanism (77), which includes a first lead screw, a first motor (771) and a first slider. The first lead screw is rotatably disposed at the bottom of the base (71). The first motor (771) is installed at one end of the base (71). The output shaft of the first motor (771) is connected to one end of the first lead screw. The base (71) has a sliding groove that passes through its upper and lower surfaces along its length. The bottom end of the first slider is connected to the first lead screw by a threaded nut. The first slider passes upward through the top of the sliding groove and is connected to the bottom surface of the base plate (72).

8. The universal lithium-ion battery sheet forming and winding integrated machine according to claim 7, characterized in that: The electrode correction mechanism (77) includes a fixed base (773), a second guide rail (774), a second slider (775), an adjusting base (776), an adjusting screw (777), and an electrode correction detector (778). The fixed base (773) is connected to the side of the base plate (72). The second guide rail (774) is laid along the length of the base plate (72) on the side of the fixed base (773). The second slider (775) is movably mounted on the second guide rail (774). The adjusting base (776) is located at one end of the fixed base (773). One end of the adjusting screw (777) is rotatably mounted on the adjusting base (776), and the other end is connected to the second slider (775) through a threaded nut. The electrode correction detector (778) is mounted on the second slider (775).

9. The universal lithium-ion battery sheet forming and winding integrated machine according to claim 8, characterized in that: The clamping mechanism (75) includes a third guide rail (751), a third slider (752), a second motor (753), a second lead screw (754), a second track seat (755), a vertical plate (756), a first cylinder (757), and a first pressure block (758). The third guide rail (751) is laid on the middle of the top surface of the base plate (72). The third slider (752) is movably mounted on the third guide rail (751). The second motor (753) is mounted on the first track seat (756). The second lead screw (754) is rotatably mounted on the second track seat (755). On a track seat (74), one end of the second lead screw (754) is connected to the output shaft of the second motor (753), and the other end is connected to the third slider (752) through a threaded nut. The second track seat (755) is laid on the top surface of the third slider (752). The vertical plate (756) is erected on the top surface of the third slider (752). The first cylinder (757) is installed on the upper side wall of the vertical plate (756). The piston rod of the first cylinder (757) is connected downward to the first pressure block (758) located above the second track seat (755).

10. The universal lithium-ion battery sheet forming and winding integrated machine according to any one of claims 1-9, characterized in that: The upper and lower electrode feeding devices include an upper electrode feeding device (22) and a lower electrode feeding device (23) that are positioned opposite each other. An upper pressing device (6) is provided at the end of the upper electrode feeding device, and a lower pressing device (12) is provided at the end of the lower electrode feeding device. The upper pressing device (6) includes a guide plate (61), a mounting block (62), a fifth cylinder (63), a lifting plate (64), and pressure rollers (65). The guide plate (61) is fixedly mounted on the side of the frame (1), and the mounting block (62) is fixedly mounted above the guide plate (61). The fifth cylinder (63) is mounted on the mounting block (62), and the piston rod of the fifth cylinder (63) passes through the mounting block (62) and is connected downward to the lifting plate (64). Several pressure rollers (65) are rotatably mounted on the lifting plate (64).

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