Double-sided coating structure of lithium ion battery diaphragm

Abstract

The utility model discloses a double-sided coating structure of a lithium ion battery diaphragm, which comprises a workbench, a first adjusting device used for adjusting the unwinding height is fixed on the top of one side of the workbench, and a dust removal device used for removing dust on the diaphragm is fixed on one side of the first adjusting device. A static electricity removing device used for removing static electricity on a diaphragm is fixed to one side of the dust removing device, a liquid spraying device is arranged above one side of the static electricity removing device, a drying device used for drying after liquid spraying is fixed to one side of the liquid spraying device, and a trowelling device is fixed to one side of the drying device. A guide roller is fixed to the other side of the drying device, a second adjusting device used for adjusting the winding height is fixed to the upper portion of the other side of the workbench, the height of the unwinding roller and the height of the winding roller can be conveniently adjusted, dust removal and static electricity removal treatment can be conveniently conducted on a diaphragm, the coated diaphragm can be conveniently and evenly flattened, and the diaphragm can be conveniently dried; and the product quality and the finished product qualification rate are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery diaphragm coating, in particular to a double-sided coating structure of a lithium ion battery diaphragm. Background Art

[0002] In the structure of lithium batteries, the diaphragm is one of the key inner components and needs to be coated during the production process.

[0003] According to the announcement number CN220177264U, a double-sided coating structure for lithium-ion battery diaphragms is disclosed, including a working plate, a plurality of supporting legs are fixed at the bottom end of the working plate, a conveyor is installed near the left end of the top surface of the working plate, a winder is installed near the right end of the top surface of the working plate, two vertical plates are fixed near the middle position of the top surface of the working plate, and also includes: a coating mechanism, which is respectively arranged between the two vertical plates near the top and bottom ends and is symmetrical to each other, and is used to perform double-sided coating treatment on the lithium-ion battery diaphragm transmitted by the conveyor. The utility model connects a plurality of liquid supply hoses connected to an external coating liquid supply device with a plurality of water inlet pipes. Through the design of the coating mechanism, the number of nozzles located above and below the diaphragm can be adjusted according to the different widths of the lithium-ion battery diaphragm, so that the entire coating structure can perform coating treatment on diaphragms of different widths.

[0004] However, the double-sided coating structure of the above-mentioned lithium-ion battery separator has the following defects:

[0005] During the coating process of lithium-ion battery diaphragms, it is inconvenient to adjust the height of the diaphragms, the diaphragms cannot be dusted, and the diaphragms are prone to static electricity, which affects subsequent coating. After coating, the coated diaphragms cannot be evenly smoothed or dried, which affects product quality and reduces the qualified rate of finished products.

[0006] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0007] In view of the problems in the related art, the utility model proposes a double-sided coating structure of a lithium-ion battery separator to overcome the above technical problems existing in the existing related art.

[0008] To this end, the specific technical solutions adopted by the utility model are as follows:

[0009] A double-sided coating structure for a lithium-ion battery diaphragm comprises a workbench, a first adjusting device for adjusting the unwinding height is fixed to the top of one side of the workbench, a dust removal device for removing dust on the diaphragm is fixed to one side of the first adjusting device, a static removal device for removing static electricity on the diaphragm is fixed to one side of the dust removal device, a liquid spraying device is arranged above one side of the static removal device, a drying device for drying after liquid spraying is fixed to one side of the liquid spraying device, a smoothing device is fixed to one side of the drying device, a guide roller is fixed to the other side of the drying device, and a second adjusting device for adjusting the winding height is fixed to the other side of the workbench.

[0010] As a further solution of the utility model, the first adjustment device includes two first adjustment grooves, a first hydraulic rod is fixed to the inner bottom of one of the first adjustment grooves, a first bearing is fixed to the top of the first hydraulic rod, a reeling roller is movably connected to the first bearing, a guide rod is fixed in the other first adjustment groove, a slider is movably connected to the guide rod, and one end of the reeling roller is fixedly connected to the slider.

[0011] As a further solution of the utility model, the dust removal device includes two first fixed blocks, two dust removal rollers are connected between the two first fixed blocks via bearings, and dust removal cloths are arranged on the outer walls of the dust removal rollers.

[0012] As a further solution of the utility model, the static electricity removal device includes two second fixed blocks, two static electricity removal rollers are connected between the two second fixed blocks through bearings, an anti-static sleeve is provided on the outer wall of the static electricity removal roller, and an electrostatic spray is sprayed on the outer wall of the anti-static sleeve.

[0013] As a further solution of the utility model, the smoothing device includes two third fixed blocks, and two smoothing rollers are connected between the two third fixed blocks via bearings.

[0014] As a further solution of the utility model, the drying device includes a drying box, strip grooves are opened on both sides of the drying box, two guide rollers are fixed inside the drying box, a heating wire is arranged on one side wall of the drying box, a plurality of electric fans are fixed on the top of the drying box, and a display screen and a control panel are arranged on the outer wall of the drying box.

[0015] As a further solution of the utility model, the second adjustment device includes two second adjustment grooves, a second hydraulic rod is fixed to the inner bottom of one of the first adjustment grooves, a second bearing is fixed to the top of the second hydraulic rod, a winding roller is movably connected to the second bearing, a guide rod is fixed in the other second adjustment groove, a guide block is movably connected to the guide rod, one end of the winding roller is fixedly connected to the guide block, and a motor is fixed to the other end of the winding roller.

[0016] The beneficial effects of the utility model are as follows: by setting the first adjusting device, it is convenient to adjust the height of the unwinding roller; by setting the second adjusting device, it is convenient to adjust the height of the winding roller; by setting the dust removal device, it is convenient to remove dust from the diaphragm; by setting the static electricity removal device, it is convenient to remove static electricity from the diaphragm; by setting the smoothing device, it is convenient to evenly smooth the diaphragm after coating; by setting the drying device, it is convenient to dry the diaphragm after coating, thereby improving product quality and improving the qualified rate of finished products. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of a double-sided coating structure of a lithium-ion battery separator according to an embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of a first regulating device of a double-sided coating structure of a lithium-ion battery separator according to an embodiment of the utility model;

[0020] Figure 3 It is a schematic diagram of a dust removal device with a double-sided coating structure for a lithium-ion battery separator according to an embodiment of the utility model;

[0021] Figure 4 This is a schematic diagram of a static electricity removal device with a double-sided coating structure for a lithium-ion battery separator according to an embodiment of the utility model;

[0022] Figure 5 It is a schematic diagram of a smoothing device for a double-sided coating structure of a lithium-ion battery separator according to an embodiment of the utility model;

[0023] Figure 6 It is a schematic diagram of a drying device for a double-sided coating structure of a lithium-ion battery separator according to an embodiment of the utility model.

[0024] In the figure:

[0025] 1. Workbench; 2. First adjusting device; 3. Dust removal device; 4. Anti-static device; 5. Liquid spraying device; 6. Drying device; 7. Smoothing device; 8. Guide roller; 9. Second adjusting device; 10. First adjusting slot; 11. First hydraulic rod; 12. First bearing; 13. Unwinding roller; 14. Guide rod; 15. Sliding block; 16. First fixed block; 17. Dust removal roller; 18. Second fixed block; 19. Anti-static roller; 20. Third fixed block; 21. Smoothing roller; 22. Drying box; 23. Strip groove; 24. Guide roller; 25. Heating wire; 26. Electric fan; 27. Display screen; 28. Control panel; 29. ​​Second adjusting slot; 30. Second hydraulic rod; 31. Winding roller; 32. Motor. DETAILED DESCRIPTION

[0026] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0027] According to an embodiment of the utility model, a double-sided coating structure of a lithium-ion battery separator is provided.

[0028] Please refer to the instruction manual Figure 1-6According to an embodiment of the utility model, a double-sided coating structure of a lithium-ion battery diaphragm comprises a workbench 1, a first adjusting device 2 for adjusting the unwinding height is fixed on the top of one side of the workbench 1, a dust removal device 3 for removing dust on the diaphragm is fixed on one side of the first adjusting device 2, a static removal device 4 for removing static electricity on the diaphragm is fixed on one side of the dust removal device 3, a liquid spraying device 5 is arranged above one side of the static removal device 4, a drying device 6 for drying after liquid spraying is fixed on one side of the liquid spraying device 5, a smoothing device 7 is fixed on one side of the drying device 6, a guide roller 8 is fixed on the other side of the drying device 6, a second adjusting device 9 for adjusting the winding height is fixed on the other side of the workbench 1, the first adjusting device 2 comprises two first adjusting grooves 10, one of the first adjusting grooves A first hydraulic rod 11 is fixed to the inner bottom of 10, a first bearing 12 is fixed to the top of the first hydraulic rod 11, a reeling roller 13 is movably connected to the first bearing 12, a guide rod 14 is fixed to the other first adjusting groove 10, a slider 15 is movably connected to the guide rod 14, one end of the reeling roller 13 is fixedly connected to the slider 15, the second adjusting device 9 includes two second adjusting grooves 29, a second hydraulic rod 30 is fixed to the inner bottom of one of the first adjusting grooves 10, a second bearing is fixed to the top of the second hydraulic rod 30, a reeling roller 31 is movably connected to the second bearing, a guide rod is fixed to the other second adjusting groove 29, a guide block is movably connected to the guide rod, one end of the reeling roller 31 is fixedly connected to the guide block, and a motor 32 is fixed to the other end of the reeling roller 31.

[0029] By providing the first adjusting device 2 , the height of the unwinding roller 13 can be adjusted conveniently, and by providing the second adjusting device 9 , the height of the winding roller 31 can be adjusted conveniently.

[0030] In one embodiment, please refer to the attached specification Figure 3-4 As a further solution of the utility model, the dust removal device 3 includes two first fixed blocks 16, two dust removal rollers 17 are connected between the two first fixed blocks 16 through bearings, and dust removal cloths are provided on the outer walls of the dust removal rollers 17. The static electricity removal device 4 includes two second fixed blocks 18, two static electricity removal rollers 19 are connected between the two second fixed blocks 18 through bearings, and anti-static sleeves are provided on the outer walls of the static electricity removal rollers 19, and electrostatic sprays are sprayed on the outer walls of the anti-static sleeves.

[0031] By providing the dust removal device 3, it is convenient to remove dust from the diaphragm, and by providing the static electricity removal device 4, it is convenient to remove static electricity from the diaphragm.

[0032] In another embodiment, please refer to the attached Figure 5-6As a further solution of the utility model, the smoothing device 7 includes two third fixed blocks 20, and two smoothing rollers 21 are connected between the two third fixed blocks 20 through bearings. The drying device 6 includes a drying box 22, and strip grooves 23 are provided on both sides of the drying box 22. Two guide rollers 24 are fixed inside the drying box 22. A heating wire 25 is provided on one side wall of the drying box 22, and a plurality of electric fans 26 are fixed on the top of the drying box 22. A display screen 27 and a control panel 28 are provided on the outer wall of the drying box 22.

[0033] By providing the smoothing device 7, it is convenient to evenly smooth the diaphragm after coating, and by providing the drying device 6, it is convenient to dry the diaphragm after coating, thereby improving product quality and improving the qualified rate of finished products.

[0034] When in use, the membrane to be coated is first placed on the unwinding roller 13, the first hydraulic rod 11 rises or falls to adjust the height of the unwinding roller 13, and stops when it reaches a suitable position, and then one end of the coating is placed on the winding roller 31, the second hydraulic rod 30 rises or falls to adjust the height of the winding roller 31, and the motor 32 drives the winding roller 31 to wind up the membrane. When the membrane passes through the dust removal device 3, the dust removal cloth is placed on the dust removal drum 17 to remove dust from the membrane. When the membrane passes through the static electricity removal device 4, The electrostatic spray is sprayed on the antistatic sleeve, and then the antistatic sleeve is sleeved on the antistatic roller 19 to perform antistatic treatment on the diaphragm. Then, the upper liquid spray device 5 sprays the diaphragm, and the sprayed diaphragm passes through the smoothing device 7. The smoothing roller 21 evenly smoothes the diaphragm. When the smoothed and sprayed diaphragm passes through the drying device 6, the temperature of the heating wire 25 and the electric fan 26 is adjusted through the control panel 28 to dry the diaphragm. The diaphragm is dried after coating to improve product quality and the qualified rate of finished products.

[0035] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-sided coating structure for a lithium-ion battery separator, comprising a workbench (1), characterized in that: A first adjusting device (2) for adjusting the unwinding height is fixed to the top of one side of the workbench (1); a dust removal device (3) for removing dust on the diaphragm is fixed to one side of the first adjusting device (2); a static removal device (4) for removing static electricity on the diaphragm is fixed to one side of the dust removal device (3); a liquid spraying device (5) is arranged above one side of the static removal device (4); a drying device (6) for drying after liquid spraying is fixed to one side of the liquid spraying device (5); a smoothing device (7) is fixed to one side of the drying device (6); a guide roller (8) is fixed to the other side of the drying device (6); and a second adjusting device (9) for adjusting the winding height is fixed to the other side of the workbench (1).

2. The double-sided coating structure of a lithium-ion battery separator according to claim 1, characterized in that: The first adjustment device (2) comprises two first adjustment grooves (10), a first hydraulic rod (11) being fixed to the inner bottom of one of the first adjustment grooves (10), a first bearing (12) being fixed to the top of the first hydraulic rod (11), a reeling roller (13) being movably connected to the first bearing (12), a guide rod (14) being fixed to the inside of the other first adjustment groove (10), a slider (15) being movably connected to the guide rod (14), and one end of the reeling roller (13) being fixedly connected to the slider (15).

3. The double-sided coating structure of a lithium ion battery separator according to claim 2, characterized in that: The dust removal device (3) comprises two first fixed blocks (16), two dust removal rollers (17) are connected between the two first fixed blocks (16) via bearings, and dust removal cloths are arranged on the outer walls of the dust removal rollers (17).

4. The double-sided coating structure of a lithium-ion battery separator according to claim 3, characterized in that: The static electricity removal device (4) comprises two second fixed blocks (18), two static electricity removal rollers (19) are connected between the two second fixed blocks (18) via bearings, an antistatic sleeve is arranged on the outer wall of the static electricity removal roller (19), and an electrostatic spray is sprayed on the outer wall of the antistatic sleeve.

5. The double-sided coating structure of a lithium-ion battery separator according to claim 4, characterized in that: The smoothing device (7) comprises two third fixing blocks (20), and two smoothing rollers (21) are connected between the two third fixing blocks (20) via bearings.

6. The double-sided coating structure of a lithium-ion battery separator according to claim 5, characterized in that: The drying device (6) comprises a drying box (22), both sides of which are provided with strip grooves (23), two guide rollers (24) are fixed inside the drying box (22), a heating wire (25) is arranged on one side wall of the drying box (22), a plurality of electric fans (26) are fixed on the top of the drying box (22), and a display screen (27) and a control panel (28) are arranged on the outer wall of the drying box (22).

7. The double-sided coating structure of a lithium-ion battery separator according to claim 6, characterized in that: The second adjustment device (9) comprises two second adjustment grooves (29), a second hydraulic rod (30) is fixed to the inner bottom of one of the first adjustment grooves (10), a second bearing is fixed to the top of the second hydraulic rod (30), a winding roller (31) is movably connected to the second bearing, a guide rod is fixed in the other second adjustment groove (29), a guide block is movably connected to the guide rod, one end of the winding roller (31) is fixedly connected to the guide block, and a motor (32) is fixed to the other end of the winding roller (31).

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