Lithium battery pole piece coating machine

Abstract

The utility model discloses a lithium battery pole piece coating machine. The lithium battery pole piece coating machine is characterized by comprising a main body, supporting legs, a motor bracket, a motor, an unwinding mechanism, a winding mechanism, a coating mechanism, a conveying mechanism, a drying mechanism and a connecting shaft, the supporting legs are fixedly connected to the lower surface of the body, the motor support is fixedly connected to one corner of the upper surface of the body, the motor is fixedly connected to the upper end of the motor support, and the unwinding mechanism is located on one side edge of the upper surface of the body and aligned with the motor. The winding mechanism is located on the other side edge of the upper surface of the main body and aligned with the unwinding mechanism, the coating mechanism is located on the side, close to the unwinding mechanism, of the upper surface of the main body, the drying mechanism is located on the side, close to the winding mechanism, of the upper surface of the main body, and the conveying mechanism is located between the coating mechanism and the drying mechanism on the upper surface of the main body. The connecting shaft is rotationally connected to the interior of the motor; the coating device has a thermal circulation function, is energy-saving and emission-reducing, and can be used for uniformly coating the coating on the pole piece.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery pole piece processing, in particular to a lithium battery pole piece coating machine. Background Art

[0002] The production and manufacturing of lithium-ion batteries is a process that is closely linked by process steps. Generally speaking, the production of lithium batteries includes the manufacturing process of pole pieces, the battery assembly process, and the final injection, pre-charging, formation, and aging processes. In the three-stage process, each process can be divided into several key processes, and each step will have a great impact on the final performance of the battery. In the pole piece manufacturing process stage, it can be subdivided into five processes: slurry preparation, slurry coating, pole piece rolling, pole piece slitting, and pole piece drying. In the battery assembly process, it can be roughly divided into winding, shelling, welding and other processes according to different battery specifications. In the final injection stage, it includes injection, exhaust, sealing, pre-charging, formation, aging and other processes. Slurry coating is the next process after the preparation of slurry. The main purpose of this process is to evenly coat the slurry with good stability, good viscosity and good fluidity on the positive and negative current collectors. Pole piece coating has an important impact on the capacity of the finished battery, the safety of the battery, the consistency of battery performance and the battery life. Therefore, both equipment suppliers and product manufacturers attach great importance to it.

[0003] The patent number CN214077588U in the prior art discloses a lithium battery pole piece coating machine, which aims to solve the technical problems that the lithium battery pole piece coating machine in the prior art cannot better fix the lithium battery pole piece reel, the lithium battery pole piece reel is prone to fall off during the unwinding process, the slurry cannot be more evenly coated on the lithium battery pole piece, the coating effect is not good, and the coating quality of the lithium battery pole piece cannot be guaranteed. The lithium battery pole piece coating machine includes a working plate, an unwinding mechanism and a coating mechanism; the bottom surface of the working plate is provided with evenly distributed supporting ribs, the upper surface of the working plate is provided with evenly distributed connecting plates, and the two longitudinally adjacent connecting plates are rotatably connected with a transmission roller through a bearing, and a motor is provided on the rear side of the upper surface of the working plate; the unwinding mechanism is arranged on the left side of the upper surface of the working plate; the coating mechanism is arranged in the middle of the upper surface of the working plate, and the coating mechanism is fixedly connected to the output shaft end of the motor.

[0004] However, the patents in the prior art have the following disadvantages:

[0005] (1) The patents in the prior art are relatively energy-consuming when in use. When drying the electrode, a large amount of energy is consumed to provide a continuous supply of hot air for the drying mechanism;

[0006] (2) When the patent in the prior art is used, the paint in the paint box is uneven, which will affect the density of the coating film and cause uneven coating on the electrode, so that high-quality electrode cannot be obtained in the end. Utility Model Content

[0007] The technical problem to be solved by the utility model is to overcome the above technical defects and provide a lithium battery pole piece coating machine with a thermal cycle function, energy saving and emission reduction, and the ability to evenly coat the coating on the pole piece.

[0008] In order to solve the above problems, the technical solution of the utility model is: a lithium battery pole piece coating machine, characterized in that it includes a main body, legs, a motor bracket, a motor, a unwinding mechanism, a winding mechanism, a coating mechanism, a conveying mechanism, a drying mechanism and a connecting shaft;

[0009] The support leg is fixedly connected to the lower surface of the main body, the motor bracket is fixedly connected to a corner position of the upper surface of the main body, the motor is fixedly connected to the upper end of the motor bracket, the unwinding mechanism is located on one side of the upper surface of the main body and is aligned with the motor, the winding mechanism is located on the other side of the upper surface of the main body and is aligned with the unwinding mechanism, the coating mechanism is located on the side of the upper surface of the main body close to the unwinding mechanism, the drying mechanism is located on the side of the upper surface of the main body close to the winding mechanism, the conveying mechanism is located between the coating mechanism and the drying mechanism on the upper surface of the main body, and the connecting shaft is rotatably connected to the inside of the motor.

[0010] Furthermore, the unwinding mechanism includes a fixed block, a sliding groove, a slider, a limiting cylinder, an unwinding roller, a support plate, and a double-groove turntable. The fixed block is fixedly arranged on the upper surface of the main body, the sliding groove is opened on the upper surface of the fixed block, the slider is slidably connected in the sliding groove, the limiting cylinder penetrates and is slidably connected to the side wall of the slider, the support plate is fixedly arranged on the upper surface of the main body, the unwinding roller is rotatably connected to the side wall of the support plate, one end of the unwinding roller penetrates through one side wall of the support plate and extends toward the connecting axis, the double-groove turntable is fixedly connected to one end of the unwinding roller close to the connecting axis, and the other side of the double-groove turntable is fixedly connected to the connecting axis.

[0011] Furthermore, the winding mechanism includes a second fixed block, a second sliding groove, a second slider, a second limiting cylinder, a winding roller, a second support plate, and a single-groove turntable. The second fixed block is fixedly arranged on the upper surface of the main body, the second sliding groove is opened on the upper surface of the second fixed block, the second slider is slidably connected in the second sliding groove, the second limiting cylinder penetrates and is slidably connected to the side wall of the second slider, the second support plate is fixedly arranged on the upper surface of the main body, the winding roller is rotatably connected to the side wall of the second support plate, one end of the winding roller penetrates the second side wall of the second support plate and extends outward, the single-groove turntable is fixedly connected to the end of the winding roller extending outward, the single-groove turntable is provided with a track one, and the other end of the track one is mounted on the outer groove of the double-groove turntable.

[0012] Furthermore, the coating mechanism includes a paint box, a stirring motor, a stirring frame, a coating roller, a bracket and a feeding port, the bracket is fixedly connected to the upper surface of the main body, the paint box is fixedly connected between the two brackets, the stirring motor is fixedly arranged at the top of the paint box, the feeding port is fixedly arranged at the top of the paint box, the upper end of the stirring frame passes through the top of the paint box and is rotatably connected to the stirring motor, the coating roller is located at the bottom opening of the paint box, both ends of the coating roller are rotatably connected to the inner side wall of the bracket, the other end of the coating roller extends outward through the side wall of the bracket, and a circular groove is opened on the surface of this end near the end position, and a second track is sleeved on the circular groove, and the other end of the second track is sleeved on the inner groove of the double-groove turntable.

[0013] Furthermore, the conveying mechanism includes a support plate three and a conveying roller, the support plate three is fixedly connected to the upper surface of the main body, and both ends of the conveying roller are rotatably connected to the inner wall of the support plate three.

[0014] Furthermore, the drying mechanism includes a drying box, a heat exchanger, an air inlet, an exhaust gas conveying pipe, a hot gas conveying pipe and a transfer port. The drying box is fixedly arranged on the upper surface of the main body, the heat exchanger is fixedly connected to the top of the drying box, the air inlet is opened on the upper surface of the heat exchanger, one end of the exhaust gas conveying pipe is connected to the side of the heat exchanger, and the other end is connected to the same side of the drying box, one end of the hot gas conveying pipe is connected to the other side of the heat exchanger, and the other end is connected to the same side of the drying box, and the transfer port is opened on the front and rear sides of the drying box.

[0015] The advantages of the utility model compared with the existing technology are:

[0016] (1) The utility model is provided with a heat exchanger structure, which solves the problem of excessive energy consumption during drying. When in use, drying generates high-temperature exhaust gas. The high-temperature exhaust gas collected in the drying box and the fresh air at normal temperature outside are heat-exchanged in the heat exchanger. The temperature of the fresh air is significantly increased after the heat exchange, which can greatly reduce the energy consumption of heating the fresh air to the temperature of the drying box;

[0017] (2) The utility model is provided with a stirring motor and a stirring frame structure, which solves the problem of uneven coating on the electrode due to uneven coating in the coating box, thereby affecting the density of the coating film. When in use, the stirring motor drives the stirring frame to rotate in the coating box, and the slurry in the coating box is stirred evenly by the rotation of the stirring frame, so as to obtain high-quality electrode. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a three-dimensional lithium battery pole piece coating machine Figure 1 .

[0019] Figure 2 The utility model is a three-dimensional lithium battery pole piece coating machine Figure 2 .

[0020] Figure 3 The utility model is a three-dimensional lithium battery pole piece coating machine Figure 3 .

[0021] Figure 4 This is a cross-sectional view of a lithium battery pole piece coating machine of the utility model. Figure 4 .

[0022] As shown in the figure: 1. Main body; 2. Support legs; 3. Motor bracket; 4. Motor; 5. Unwinding mechanism; 6. Rewinding mechanism; 7. Coating mechanism; 8. Conveying mechanism; 9. Drying mechanism; 10. Connecting shaft; 501. Fixed block 1; 502. Sliding slot 1; 503. Sliding block 1; 504. Limiting cylinder 1; 505. Unwinding roller; 506. Support plate 1; 507. Double-slot turntable; 601. Fixed block 2; 602. Sliding slot 2; 603. Sliding block 2; 604. Limiting cylinder 2 ; 605, winding roller; 606, supporting plate 2; 607, single-slot turntable; 608, track 1; 701, paint box; 702, stirring motor; 703, stirring frame; 704, coating roller; 705, bracket; 706, feeding port; 707, circular groove; 708, track 2; 801, supporting plate 3; 802, conveying roller; 901, drying box; 902, heat exchanger; 903, air inlet; 904, exhaust gas conveying pipe; 905, hot gas conveying pipe; 906, conveying port. DETAILED DESCRIPTION

[0023] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings, wherein the same parts are represented by the same reference numerals.

[0024] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0025] In order to make the contents of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0026] like Figures 1 to 4 As shown, a lithium battery pole piece coating machine is characterized in that it includes a main body 1, a leg 2, a motor bracket 3, a motor 4, an unwinding mechanism 5, a rewinding mechanism 6, a coating mechanism 7, a conveying mechanism 8, a drying mechanism 9 and a connecting shaft 10; the leg 2 is fixedly connected to the lower surface of the main body 1, the motor bracket 3 is fixedly connected to an angle position on the upper surface of the main body 1, the motor 4 is fixedly connected to the upper end of the motor bracket 3, the unwinding mechanism 5 is located on one side of the upper surface of the main body 1 and is aligned with the motor 4, the rewinding mechanism 6 is located on the other side of the upper surface of the main body 1 and is aligned with the unwinding mechanism 5, the coating mechanism 7 is located on one side of the upper surface of the main body 1 close to the unwinding mechanism 5, the drying mechanism 9 is located on one side of the upper surface of the main body 1 close to the rewinding mechanism 6, the conveying mechanism 8 is located between the coating mechanism 7 and the drying mechanism 9 on the upper surface of the main body 1, and the connecting shaft 10 is rotatably connected to the inside of the motor 4.

[0027] like Figures 1 to 4 As shown, the unwinding mechanism 5 includes a fixed block 501, a sliding groove 502, a slider 503, a limiting cylinder 504, an unwinding roller 505, a support plate 506, and a double-groove turntable 507. The fixed block 501 is fixedly arranged on the upper surface of the main body 1, the sliding groove 502 is opened on the upper surface of the fixed block 501, the slider 503 is slidably connected in the sliding groove 502, the limiting cylinder 504 penetrates and is slidably connected to the side wall of the slider 503, the support plate 506 is fixedly arranged on the upper surface of the main body 1, and the unwinding roller 505 is rotatably connected to the support plate 506. On the side wall of the support plate 506, one end of the unwinding roller 505 penetrates the side wall of the support plate 506 and extends toward the connecting shaft 10, the double-grooved turntable 507 is fixedly connected to one end of the unwinding roller 505 close to the connecting shaft 10, and the other side of the double-grooved turntable 507 is fixedly connected to the connecting shaft 10. When in use, the electrode roll to be coated is first sleeved on the unwinding roller 505, and then the slider 503 is moved to align the limiting cylinder 504 on its side wall with the unwinding roller 505, and then the limiting cylinder 504 is pushed to make its inner end sleeved and connected with the unwinding roller 505, so as to play a fixing role.

[0028] like Figure 2As shown, the winding mechanism 6 includes a second fixed block 601, a second sliding groove 602, a second slider 603, a second limiting cylinder 604, a winding roller 605, a second support plate 606, and a single-groove turntable 607. The second fixed block 601 is fixedly arranged on the upper surface of the main body 1, the second sliding groove 602 is opened on the upper surface of the second fixed block 601, the second slider 603 is slidably connected in the second sliding groove 602, the second limiting cylinder 604 penetrates and slides on the side wall of the second slider 603, the second support plate 606 is fixedly arranged on the upper surface of the main body 1, the winding roller 605 is rotatably connected to the side wall of the second support plate 606, and one end of the winding roller 605 penetrates The side wall of the transparent support plate 606 extends outward, and the single-slot turntable 607 is fixedly connected to the end of the winding roller 605 extending outward. The single-slot turntable 607 is sleeved with a track 608, and the other end of the track 608 is sleeved on the outer groove of the double-slot turntable 507. When in use, the motor 4 drives the double-slot turntable 507 to rotate through the rotating shaft 10, and the double-slot turntable 507 drives the single-slot turntable 607 to rotate through the track 608 to roll up the coated electrode, and finally the limiting cylinder 604 is first pulled away from the winding roller 605, and then the slider 603 is moved to a position convenient for taking out the coated electrode roll, and finally the coated electrode roll is taken out.

[0029] like Figure 4 As shown, the coating mechanism 7 includes a coating box 701, a stirring motor 702, a stirring frame 703, a coating roller 704, a bracket 705 and a feeding port 706. The bracket 705 is fixedly connected to the upper surface of the main body 1, the coating box 701 is fixedly connected between the two brackets 705, the stirring motor 702 is fixedly arranged at the top of the coating box 701, the feeding port 706 is fixedly arranged at the top of the coating box 701, the upper end of the stirring frame 703 passes through the top of the coating box 701 and is rotatably connected to the stirring motor 702, the coating roller 704 is located at the bottom opening of the coating box 701, and the two ends of the coating roller 704 are rotatably connected to the inner side of the bracket 705. On the side wall, the other end of the coating roller 704 extends outward through the side wall of the bracket 705, and a circular groove 707 is opened on the surface near the end of this end, and a track 708 is sleeved on the circular groove 707, and the other end of the track 708 is sleeved on the inner groove of the double-groove turntable 507. When in use, the slurry is added to the coating box 701 through the feed port 706, and then the stirring motor 702 is started to drive the stirring frame 703 to rotate. The stirring frame 703 stirs the slurry in the coating box evenly by rotating. At the same time, the motor 4 drives the double-groove turntable 507 to rotate through the rotating shaft 10, and the double-groove turntable 507 drives the coating roller 704 to rotate through the track 708 to achieve coating of the electrode.

[0030] like Figure 4As shown, the conveying mechanism 8 includes a support plate three 801 and a conveying roller 802. The support plate three 801 is fixedly connected to the upper surface of the main body 1. Both ends of the conveying roller 802 are rotatably connected to the inner wall of the support plate three 801. When in use, the coated electrode is conveyed to the drying box 901 through the conveying roller 802.

[0031] like Figure 4 As shown, the drying mechanism 9 includes a drying box 901, a heat exchanger 902, an air inlet 903, an exhaust gas delivery pipe 904, a hot gas delivery pipe 905 and a delivery port 906. The drying box 901 is fixedly arranged on the upper surface of the main body 1, the heat exchanger 902 is fixedly connected to the top of the drying box 901, the air inlet 903 is opened on the upper surface of the heat exchanger 902, one end of the exhaust gas delivery pipe 904 is connected to the side of the heat exchanger 902, and the other end is connected to the same side of the drying box 901, one end of the hot gas delivery pipe 905 is connected to the other side of the heat exchanger 902, and the other end is connected to the same side of the drying box 901, The conveying port 906 is opened on the front and rear sides of the drying box 901. When in use, the coated electrode is conveyed from the conveying port 906 on one side of the drying box 901 to the drying box 901 through the conveying roller 802. During the drying process, high-temperature exhaust gas will be generated. The high-temperature exhaust gas collected from the drying box 901 through the exhaust gas conveying pipe 904 and the external fresh air at normal temperature entering the air inlet are heat exchanged in the heat exchanger 902. The temperature of the fresh air will be significantly increased after the heat exchange, and then it will be input into the drying box 901 through the hot air conveying pipe 905. This can greatly reduce the energy consumption of heating the fresh air to the temperature required for the drying box 901.

[0032] In specific use, the electrode sheet to be coated is firstly rolled onto the unwinding roller 505, and then the slider 503 is moved to align the limiting cylinder 504 on its side wall with the unwinding roller 505, and then the limiting cylinder 504 is pushed to make one end of its inner side sleeve connected with the unwinding roller 505, so as to play a fixing role, and then one end of the electrode sheet is wound around the coating roller 704 and the conveying roller 802 in turn, and then the electrode sheet passes through the drying box 901 through the conveying port 906, and finally wound around the winding roller 605, and the motor 4 drives the double-grooved turntable 507 to rotate through the rotating shaft 10, and the double-grooved turntable 507 drives the single-grooved turntable 607 to rotate through the crawler 608, so as to roll up the coated electrode sheet, and at the same time, slurry is added into the coating box 701 through the feeding port 706, and then the stirring motor 702 is started to drive the stirring frame 703 to rotate, and the stirring frame 703 stirs the slurry in the coating box evenly by rotating, and at the same time, the motor 4 drives the double-grooved turntable 507 to rotate through the rotating shaft 10, and at the same time, the double-grooved turntable 507 drives the single-grooved turntable 607 to rotate through the crawler 608, so as to roll up the coated electrode sheet, and at the same time, the slurry is added into the coating box 701 through the feeding port 706, and then the stirring motor 702 is started to drive the stirring frame 703 to rotate, and the stirring frame 703 stirs the slurry in the coating box evenly by rotating, and at the same time, the motor 4 drives the double-grooved turntable 507 to rotate through the rotating shaft 10 The rotating shaft 10 drives the double-grooved turntable 507 to rotate, and the double-grooved turntable 507 drives the coating roller 704 to rotate through the second track 708 to achieve coating of the electrode. The coated electrode is conveyed to the drying box 901 from the conveying port 906 on the side of the drying box 901 through the conveying roller 802. During the drying process, the drying will produce high-temperature exhaust gas. The high-temperature exhaust gas collected from the drying box 901 through the exhaust gas conveying pipe 904 and the external normal temperature fresh air entering the air inlet are heat exchanged in the heat exchanger 902. The temperature of the fresh air will be significantly increased after the heat exchange, and then it will be input into the drying box 901 through the hot air conveying pipe 905. In this way, the energy consumption of heating the fresh air to the temperature required for the drying box 901 can be greatly reduced. Finally, the limiting cylinder 604 is first pulled away from the winding roller 605, and then the slider 603 is moved to a position convenient for taking out the coated electrode roll, and finally the coated electrode roll is taken out.

[0033] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A lithium battery pole piece coating machine, characterized in that: It comprises a main body (1), legs (2), a motor bracket (3), a motor (4), an unwinding mechanism (5), a rewinding mechanism (6), a coating mechanism (7), a conveying mechanism (8), a drying mechanism (9) and a connecting shaft (10); The support leg (2) is fixedly connected to the lower surface of the main body (1); the motor bracket (3) is fixedly connected to an angle position of the upper surface of the main body (1); the motor (4) is fixedly connected to the upper end of the motor bracket (3); the unwinding mechanism (5) is located at one side of the upper surface of the main body (1) and is aligned with the motor (4); the rewinding mechanism (6) is located at the other side of the upper surface of the main body (1) and is aligned with the unwinding mechanism (5); the coating mechanism (7) is located on one side of the upper surface of the main body (1) close to the unwinding mechanism (5); the drying mechanism (9) is located on one side of the upper surface of the main body (1) close to the rewinding mechanism (6); the conveying mechanism (8) is located between the coating mechanism (7) and the drying mechanism (9) on the upper surface of the main body (1); and the connecting shaft (10) is rotatably connected to the inside of the motor (4).

2. A lithium battery pole piece coating machine according to claim 1, characterized in that: The unwinding mechanism (5) comprises a fixed block (501), a sliding groove (502), a slider (503), a limiting cylinder (504), an unwinding roller (505), a support plate (506), and a double-groove turntable (507); the fixed block (501) is fixedly arranged on the upper surface of the main body (1); the sliding groove (502) is opened on the upper surface of the fixed block (501); the slider (503) is slidably connected in the sliding groove (502); the limiting cylinder (504) penetrates the sliding groove Connected to the side wall of slider one (503), the support plate one (506) is fixedly arranged on the upper surface of the main body (1), the unwinding roller (505) is rotatably connected to the side wall of support plate one (506), one end of the unwinding roller (505) penetrates the side wall of support plate one (506) and extends in the direction of the connecting shaft (10), one side of the double-grooved turntable (507) is fixedly connected to one end of the unwinding roller (505) close to the connecting shaft (10), and the other side of the double-grooved turntable (507) is fixedly connected to the connecting shaft (10).

3. A lithium battery pole piece coating machine according to claim 1, characterized in that: The winding mechanism (6) comprises a second fixed block (601), a second sliding groove (602), a second slider (603), a second limiting cylinder (604), a winding roller (605), a second support plate (606), and a single-groove turntable (607); the second fixed block (601) is fixedly arranged on the upper surface of the main body (1); the second sliding groove (602) is opened on the upper surface of the second fixed block (601); the second slider (603) is slidably connected in the second sliding groove (602); the second limiting cylinder (604) penetrates and is slidably connected in the second slider The support plate 2 (606) is fixedly arranged on the upper surface of the main body (1), the winding roller (605) is rotatably connected to the side wall of the support plate 2 (606), one end of the winding roller (605) penetrates the side wall of the support plate 2 (606) and extends outward, the single-groove turntable (607) is fixedly connected to the end of the winding roller (605) extending outward, and the single-groove turntable (607) is provided with a track 1 (608), and the other end of the track 1 (608) is mounted on the outer groove of the double-groove turntable (507).

4. A lithium battery pole piece coating machine according to claim 1, characterized in that: The coating mechanism (7) comprises a coating box (701), a stirring motor (702), a stirring frame (703), a coating roller (704), a bracket (705) and a feeding port (706), wherein the bracket (705) is fixedly connected to the upper surface of the main body (1), the coating box (701) is fixedly connected between the two brackets (705), the stirring motor (702) is fixedly arranged at the top of the coating box (701), the feeding port (706) is fixedly arranged at the top of the coating box (701), and the upper end of the stirring frame (703) passes through the coating roller (704). The top of the material box (701) is rotatably connected to the stirring motor (702), and the coating roller (704) is located at the bottom opening of the coating box (701). One end of the coating roller (704) is rotatably connected to the inner wall of the bracket (705), and the other end of the coating roller (704) extends outward through the side wall of the bracket (705), and a circular groove (707) is provided on the surface of this end near the end position, and a second track (708) is sleeved on the circular groove (707), and the other end of the second track (708) is sleeved on the inner groove of the double-groove turntable (507).

5. A lithium battery pole piece coating machine according to claim 1, characterized in that: The conveying mechanism (8) comprises a support plate three (801) and a conveying roller (802), wherein the support plate three (801) is fixedly connected to the upper surface of the main body (1), and the two ends of the conveying roller (802) are rotatably connected to the inner side wall of the support plate three (801).

6. A lithium battery pole piece coating machine according to claim 3, characterized in that: The drying mechanism (9) comprises a drying box (901), a heat exchanger (902), an air inlet (903), an exhaust gas conveying pipe (904), a hot gas conveying pipe (905) and a delivery port (906); the drying box (901) is fixedly arranged on the upper surface of the main body (1); the heat exchanger (902) is fixedly connected to the top of the drying box (901); the air inlet (903) is provided on the upper surface of the heat exchanger (902); one end of the exhaust gas conveying pipe (904) is connected to the side of the heat exchanger (902) and the other end is connected to the same side of the drying box (901); one end of the hot gas conveying pipe (905) is connected to the other side of the heat exchanger (902) and the other end is connected to the same side of the drying box (901); the delivery port (906) is provided on the front and rear sides of the drying box.

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