Polymer lithium battery coating machine

Abstract

The utility model relates to lithium cell production equipment technical field, concretely is a kind of polymer lithium battery coating machine, including substrate, the top fixed mounting of substrate is symmetrically distributed support rod, the top fixed mounting of support rod is coated with box, the both sides of coated with box are all opened with first guide mouth, the front fixed intercalation of coated with box is installed with U-shaped coating pipe. This one kind of polymer lithium battery coating machine, by the cooperation of substrate, unwinding frame, unwinding roll, winding frame, winding roll, first servo motor, guide frame, guide roll, coating box, first guide mouth, pump body, connecting pipe, outer row pipe, feeding pipe, U-shaped coating pipe, support rod, stand, drying box, hot blast engine, second guide mouth, spray head and liquid storage tank, the continuous coating and drying winding of pole piece matrix coiled material are realized. First, slurry is evenly sprayed on the upper and lower surfaces of the coiled material by the spray head, and then the auxiliary roller is rolled to extrude and spread, so that the slurry is more evenly distributed.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery production equipment technology, specifically a polymer lithium battery coating machine. Background Technology

[0002] In the production process of polymer lithium batteries, coating is a crucial step. The coating machine's function is to uniformly coat the active material slurry onto the battery electrode substrate, and the coating quality directly affects the performance and safety of the lithium battery.

[0003] Currently, some coating machines use a coating roller to directly dip into the coating liquid and apply it to the electrode sheet, which has significant drawbacks. This method makes it difficult to precisely control the transfer amount and distribution of the coating liquid, easily leading to inconsistent coating thickness on the electrode sheet, resulting in localized areas that are too thick or too thin. Uneven coating will cause differences in the electrochemical performance of different areas of the electrode sheet, affecting the uniformity of lithium-ion insertion and extraction, thereby reducing the charge and discharge efficiency, capacity, and cycle stability of the lithium battery, and adversely affecting the overall performance of the lithium battery.

[0004] Therefore, it is necessary to provide a polymer lithium battery coating machine to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a polymer lithium battery coating machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A polymer lithium battery coating machine, comprising:

[0008] A substrate, on the top of which is fixedly mounted symmetrically distributed support rods, and on the top of which is fixedly mounted a coating box, with first guide openings on both sides of the coating box, and a U-shaped coating tube fixedly inserted on the front of the coating box, with several nozzles fixedly and evenly fixed on the upper and lower sides of the outer surface of the U-shaped coating tube at equal intervals.

[0009] A liquid storage tank is fixedly installed on the top of the substrate between two support rods. A connecting pipe is fixedly connected between the front of the liquid storage tank and the U-shaped coating tube. A pump body is installed on the connecting pipe. Auxiliary rollers are symmetrically distributed inside the coating tank on one side of the U-shaped coating tube.

[0010] Preferably, symmetrically distributed columns are fixedly installed on the top of the substrate on one side of the support rod, a drying box is fixedly installed on the top of the columns, a second guide opening is provided on both sides of the drying box, a hot air fan is fixedly installed on the top of the drying box, and the output end of the hot air fan is connected to the interior of the drying box, and a controller is fixedly installed on the back of the drying box.

[0011] Preferably, an unwinding frame is fixedly installed on one side of the top of the substrate, and an unwinding roller is rotatably installed on the unwinding frame. A winding frame is fixedly installed on the other side of the top of the substrate, and a winding roller is rotatably installed on the winding frame. A first servo motor is fixedly installed on the front of the winding frame, and the drive end of the first servo motor passes through the winding frame and extends into the interior of the winding frame and is fixedly connected to the front end of the winding roller.

[0012] Preferably, guide frames are fixedly installed on both sides of the top of the substrate, and guide rollers are rotatably installed on the guide frames, with the guide rollers corresponding to the positions of the first guide opening and the second guide opening.

[0013] Preferably, an adjustment mechanism is provided inside the coating box on one side of the U-shaped coating tube. The adjustment mechanism includes a vertical rail, which is fixedly installed inside the coating box behind the side of the U-shaped coating tube. A bidirectional lead screw is rotatably installed inside the vertical rail. Symmetrically distributed adjustment blocks are sleeved on the outer wall of the bidirectional lead screw, and the adjustment blocks are slidably installed on the vertical rail. Two auxiliary rollers are rotatably installed on the front of the corresponding adjustment blocks. A second servo motor is fixedly installed on the rear side of the top of the coating box, and the drive end of the second servo motor passes through the coating box and extends into the interior of the coating box, where it is fixedly connected to the top end of the bidirectional lead screw.

[0014] Preferably, the outer wall of the bidirectional lead screw is provided with symmetrically distributed left-hand threads and right-hand threads.

[0015] Preferably, a feeding pipe is fixedly installed on the upper side of one side of the front of the liquid storage tank, and an external discharge pipe is fixedly installed on the lower side of one side of the front of the liquid storage tank.

[0016] Preferably, the adjusting block has a threaded hole adapted to the bidirectional lead screw, and the adjusting block is threadedly connected to the bidirectional lead screw through the threaded hole.

[0017] Preferably, a conduit is fixedly installed at the bottom of the coating box.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This utility model achieves continuous coating, drying, and winding of electrode substrate roll material through the coordinated use of a substrate, unwinding frame, unwinding roller, winding frame, winding roller, first servo motor, guide frame, guide roller, coating box, first guide port, pump body, connecting pipe, external discharge pipe, feeding pipe, U-shaped coating pipe, support rod, column, drying box, hot air blower, second guide port, nozzle, and liquid storage tank. First, the slurry is evenly sprayed onto the upper and lower surfaces of the roll material through the nozzle, and then the auxiliary roller rolls and squeezes the slurry to ensure a more uniform distribution. Subsequent drying effectively ensures uniform electrode coating thickness, avoids localized thickness differences, and significantly improves electrode coating quality and production efficiency.

[0020] 2. This utility model utilizes a second servo motor, an adjustment mechanism, an adjustment block, a vertical rail, a bidirectional lead screw, and auxiliary rollers in combination. When processing electrode substrate rolls of different thicknesses, the second servo motor drives the bidirectional lead screw to rotate. By leveraging its left-hand and right-hand thread transmission characteristics and the sliding cooperation between the adjustment block and the vertical rail, the adjustment block drives the auxiliary rollers to move synchronously, effectively controlling the spacing between the auxiliary rollers. This allows for efficient processing of electrode substrate rolls of different thicknesses, greatly improving the equipment's versatility in processing rolls of different specifications. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0023] Figure 3 This is a cross-sectional view of the coating box in this utility model;

[0024] Figure 4 This is a schematic diagram of the adjustment mechanism in this utility model.

[0025] In the diagram: 1. Substrate; 2. Unwinding frame; 3. Unwinding roller; 4. Rewinding frame; 5. Rewinding roller; 6. First servo motor; 7. Guide frame; 8. Guide roller; 9. Coating box; 10. Second servo motor; 11. First guide port; 12. Pump body; 13. Connecting pipe; 14. Outer discharge pipe; 15. Feeding pipe; 16. U-shaped coating pipe; 17. Support rod; 18. Column; 19. Drying box; 20. Hot air blower; 21. Second guide port; 22. Adjustment mechanism; 23. Nozzle; 24. Liquid storage tank; 25. Adjusting block; 26. Vertical rail; 27. Bidirectional lead screw; 28. Auxiliary roller. Detailed Implementation

[0026] 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.

[0027] Please see Figures 1-4 One embodiment provided by this utility model:

[0028] A polymer lithium battery coating machine, comprising:

[0029] The substrate 1 has symmetrically distributed support rods 17 fixedly installed on its top. A coating box 9 is fixedly installed on the top of the support rods 17. First guide ports 11 are opened on both sides of the coating box 9. A U-shaped coating tube 16 is fixedly inserted on the front of the coating box 9. Several nozzles 23 are fixedly and evenly installed on the upper and lower sides of the outer surface of the U-shaped coating tube 16.

[0030] A liquid storage tank 24 is fixedly installed on the top of the substrate 1 between two support rods 17. A connecting pipe 13 is fixedly connected between the front of the liquid storage tank 24 and the U-shaped coating tube 16. A pump body 12 is provided on the connecting pipe 13. Auxiliary rollers 28 are symmetrically distributed inside the coating box 9 on one side of the U-shaped coating tube 16.

[0031] Symmetrically distributed columns 18 are fixedly installed on the top of the substrate 1 on one side of the support rod 17. A drying box 19 is fixedly installed on the top of the columns 18. A second guide port 21 is opened on both sides of the drying box 19. A hot air blower 20 is fixedly installed on the top of the drying box 19, and the output end of the hot air blower 20 is connected to the inside of the drying box 19. A controller is fixedly installed on the back of the drying box 19. The entire device is controlled by the controller. Since the device matched with the control button is a common device and belongs to existing common knowledge technology, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0032] In one embodiment, an unwinding frame 2 is fixedly installed on one side of the top of the substrate 1, and an unwinding roller 3 is rotatably installed on the unwinding frame 2. A winding frame 4 is fixedly installed on the other side of the top of the substrate 1, and a winding roller 5 is rotatably installed on the winding frame 4. A first servo motor 6 is fixedly installed on the front of the winding frame 4, and the drive end of the first servo motor 6 passes through the winding frame 4 and extends into the interior of the winding frame 4 and is fixedly connected to the front end of the winding roller 5. The unwinding frame 2 and the unwinding roller 3 realize the unwinding of the electrode roll material. The winding frame 4, the winding roller 5 and the first servo motor 6 cooperate to complete the winding, so that the electrode roll material can be automatically and orderly conveyed, ensuring the continuous operation of the coating work.

[0033] In one preferred embodiment, guide frames 7 are fixedly installed on both sides of the top of the substrate 1, and guide rollers 8 are rotatably installed on the guide frames 7. The guide rollers 8 correspond to the positions of the first guide port 11 and the second guide port 21, which can guide the electrode roll material to smoothly enter and leave the coating area, ensuring a smooth coating process.

[0034] In one embodiment, an adjustment mechanism 22 is provided inside the coating box 9 on one side of the U-shaped coating tube 16. The adjustment mechanism 22 includes a vertical rail 26, which is fixedly installed inside the coating box 9 behind the side of the U-shaped coating tube 16. A bidirectional lead screw 27 is rotatably installed inside the vertical rail 26. Symmetrically distributed adjustment blocks 25 are sleeved on the outer wall of the bidirectional lead screw 27, and the adjustment blocks 25 are slidably installed on the vertical rail 26. Two auxiliary rollers 28 are rotatably installed on the front of the corresponding adjustment blocks 25. A second servo motor 10 is fixedly installed on the rear side of the top of the coating box 9. The drive end of the second servo motor 10 passes through the coating box 9 and extends into the interior of the coating box 9 and is fixedly connected to the top end of the bidirectional lead screw 27. The spacing of the auxiliary rollers 28 can be flexibly and accurately adjusted to adapt to the coating requirements of electrode rolls of different thicknesses.

[0035] In one preferred embodiment, the outer wall of the bidirectional lead screw 27 is provided with symmetrically distributed left-hand and right-hand threads, which enables the adjusting block 25 connected to it to move synchronously relative to or opposite to each other, so as to facilitate precise adjustment of the spacing of the auxiliary roller 28.

[0036] In one embodiment, a feed pipe 15 is fixedly installed on the upper side of one side of the front of the liquid storage tank 24, and an external drain pipe 14 is fixedly installed on the lower side of one side of the front of the liquid storage tank 24. The feed pipe 15 facilitates the replenishment of slurry, and the external drain pipe 14 at the bottom facilitates the discharge of waste liquid or cleaning of the tank, ensuring slurry supply and convenient equipment maintenance.

[0037] In one preferred embodiment, the adjusting block 25 has a threaded hole that matches the bidirectional lead screw 27, and the adjusting block 25 is threadedly connected to the bidirectional lead screw 27 through the threaded hole, which can convert the rotation of the bidirectional lead screw 27 into linear movement of the adjusting block 25, accurately control the spacing of the auxiliary rollers 28, and make the operation stable and easy to adjust for different thicknesses of electrode rolls.

[0038] In one embodiment, a conduit is fixedly installed at the bottom of the coating box 9 to facilitate the discharge of excess coating liquid, avoid liquid accumulation affecting the coating effect, and also enable the recycling of coating liquid to reduce costs.

[0039] The working principle of this utility model is as follows: In use, the electrode substrate roll to be coated is placed on the unwinding roller 3 of the unwinding frame 2, with one end extended. Guided by the left guide roller 8, it passes through the coating box 9 via the first guide port 11, then through the drying box 19 via the second guide port 21, and finally is guided and fixed to the take-up roller 5 by the right guide roller 8. The first servo motor 6 is started, and its drive end drives the take-up roller 5 to rotate and rewind the electrode substrate roll, transporting it between the coating box 9 and the drying box 19 along a preset path. Simultaneously, the pump 12 operates, drawing slurry from the storage tank 24 through the connecting pipe 13 and inputting it into the U-shaped coating pipe 16. The slurry is then evenly sprayed onto the upper and lower surfaces of the electrode substrate roll by the nozzle 23. The electrode substrate roll roll rolls in rolling contact with the two auxiliary rollers 28, which evenly coat the surface with slurry. The coated electrode substrate roll roll enters the drying box 19, where it is dried by a hot air blower 20. After drying, the electrode substrate roll is stably wound onto the take-up roller 5 under the guidance of the guide roller 8. The equipment first sprays the slurry evenly, and then applies it by the extrusion of the auxiliary roller 28 to ensure uniform coating thickness of the electrode, avoid local thickness differences, and improve the coating quality of the electrode.

[0040] When processing electrode substrate rolls of varying thicknesses, the second servo motor 10 can be activated, driving the bidirectional lead screw 27 to rotate. Utilizing the thread transmission characteristics of the left-hand and right-hand threads on the bidirectional lead screw 27, combined with the sliding engagement of the adjusting block 25 and the vertical rail 26, the two adjusting blocks 25 can stably move in relative or opposite directions. The movement of the adjusting blocks 25 causes the auxiliary rollers 28 to move synchronously, effectively controlling the distance between the two auxiliary rollers 28. This ensures that the auxiliary rollers 28 can efficiently process electrode substrate rolls of varying thicknesses, significantly improving the equipment's versatility.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A polymer lithium battery coating machine, characterized in that, It includes: A substrate (1) is fixedly mounted on the top of the substrate (1) with symmetrically distributed support rods (17). A coating box (9) is fixedly mounted on the top of the support rods (17). A first guide port (11) is opened on both sides of the coating box (9). A U-shaped coating tube (16) is fixedly inserted on the front of the coating box (9). Several nozzles (23) are fixedly and evenly fixed on the upper and lower sides of the outer surface of the U-shaped coating tube (16). A liquid storage tank (24) is fixedly installed on the top of the substrate (1) between two support rods (17). A connecting pipe (13) is fixedly connected between the front of the liquid storage tank (24) and the U-shaped coating tube (16). A pump body (12) is provided on the connecting pipe (13). Auxiliary rollers (28) are symmetrically distributed inside the coating box (9) on one side of the U-shaped coating tube (16).

2. The polymer lithium battery coating machine according to claim 1, characterized in that: The top of the substrate (1) is fixedly installed with symmetrically distributed columns (18) on one side of the support rod (17). A drying box (19) is fixedly installed at the top of the column (18). A second guide port (21) is opened on both sides of the drying box (19). A hot air blower (20) is fixedly installed on the top of the drying box (19), and the output end of the hot air blower (20) is connected to the inside of the drying box (19). A controller is fixedly installed on the back of the drying box (19).

3. The polymer lithium battery coating machine according to claim 1, characterized in that: A winding frame (2) is fixedly installed on one side of the top of the substrate (1), and a winding roller (3) is rotatably installed on the winding frame (2). A winding frame (4) is fixedly installed on the other side of the top of the substrate (1), and a winding roller (5) is rotatably installed on the winding frame (4). A first servo motor (6) is fixedly installed on the front of the winding frame (4), and the drive end of the first servo motor (6) passes through the winding frame (4) and extends into the interior of the winding frame (4) and is fixedly connected to the front end of the winding roller (5).

4. A polymer lithium battery coating machine according to claim 1, characterized in that: Guide frames (7) are fixedly installed on both sides of the top of the substrate (1). Guide rollers (8) are rotatably installed on the guide frames (7). The guide rollers (8) correspond to the positions of the first guide port (11) and the second guide port (21).

5. A polymer lithium battery coating machine according to claim 1, characterized in that: An adjustment mechanism (22) is provided inside the coating box (9) on one side of the U-shaped coating tube (16). The adjustment mechanism (22) includes a vertical rail (26), which is fixedly installed inside the coating box (9) on the rear side of the U-shaped coating tube (16). A bidirectional lead screw (27) is rotatably installed inside the vertical rail (26). Symmetrically distributed adjustment blocks (25) are sleeved on the outer wall of the bidirectional lead screw (27), and the adjustment blocks (25) are slidably installed on the vertical rail (26). Two auxiliary rollers (28) are rotatably installed on the front of the corresponding adjustment blocks (25). A second servo motor (10) is fixedly installed on the rear side of the top of the coating box (9), and the drive end of the second servo motor (10) passes through the coating box (9) and extends into the interior of the coating box (9) and is fixedly connected to the top of the bidirectional lead screw (27).

6. A polymer lithium battery coating machine according to claim 5, characterized in that: The outer wall of the bidirectional lead screw (27) is provided with symmetrically distributed left-hand threads and right-hand threads.

7. A polymer lithium battery coating machine according to claim 1, characterized in that: A feeding pipe (15) is fixedly installed on the upper side of one side of the liquid storage tank (24), and an external discharge pipe (14) is fixedly installed on the lower side of one side of the liquid storage tank (24).

8. A polymer lithium battery coating machine according to claim 5, characterized in that: The adjusting block (25) has a threaded hole that is compatible with the bidirectional lead screw (27), and the adjusting block (25) is threadedly connected to the bidirectional lead screw (27) through the threaded hole.

9. A polymer lithium battery coating machine according to claim 1, characterized in that: The bottom of the coating box (9) is fixedly fitted with a conduit.

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