Coating equipment for lithium battery processing

Abstract

The utility model discloses coating equipment for lithium battery processing, which relates to the technical field of lithium battery processing and comprises a feeding table, a stock bin is arranged above the feeding table, a main material cavity and a material distributing cavity are arranged in the stock bin, a partition plate is arranged between the main material cavity and the material distributing cavity, the top end of the main material cavity is communicated with the top end of the material distributing cavity, and the top end of the main material cavity is communicated with the top end of the material distributing cavity. A material outlet is formed in the bottom end of the material distributing cavity, a liquid level lifting plate is movably installed in the main material cavity, a lifting rod is movably installed on the top of the material bin, and the lifting rod is fixedly connected with the liquid level lifting plate. According to the design scheme, through the design that the main material cavity and the branch material cavities are formed in the material bin, the height of the liquid level lifting plate is gradually increased in the coating process, so that electrode liquid is continuously supplemented into the branch material cavities, the liquid amount in the branch material cavities is always kept consistent, the flow speed of the electrode liquid is kept in a constant-speed state, and the coating efficiency is improved. And the coating uniformity can be ensured.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery processing technology, and in particular to a coating equipment for lithium battery processing. Background Technology

[0002] Lithium-ion batteries are currently the most widely used type of battery, used in devices such as mobile phones, laptops, and electric vehicles. In the production and manufacturing of lithium-ion batteries, there is a crucial electrode liquid coating step, which involves uniformly applying the electrode liquid onto the electrode plate and then cutting and folding it to form the electrode. The current coating equipment operates on the principle that the roller moves the electrode plate while the electrode liquid flows onto the electrode plate under the action of gravity to form an electrode layer, thus completing the coating step.

[0003] However, existing coating equipment still has certain limitations. The flow rate of the electrode liquid must be kept constant in order to ensure that the electrode liquid can be evenly coated onto the electrode plate. However, the flow rate of the electrode liquid is related to the liquid level in the chamber. As the liquid level in the chamber decreases, the flow rate of the electrode liquid will also decrease, which will cause the flow rate of the electrode liquid to be unable to maintain a constant state, resulting in uneven coating of the electrode liquid on the surface of the electrode plate. Utility Model Content

[0004] In order to overcome the above-mentioned defects in the prior art, this utility model provides a coating equipment for lithium battery processing.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a coating equipment for lithium battery processing, including a feeding platform, a hopper installed above the feeding platform, a main material chamber and a distribution chamber inside the hopper, a partition between the main material chamber and the distribution chamber, the top ends of the main material chamber and the distribution chamber are connected to each other, the bottom end of the distribution chamber is provided with a discharge port, a liquid level lifting plate is movably installed in the main material chamber, a lifting rod is movably installed on the top of the hopper, the lifting rod is fixedly connected to the liquid level lifting plate, and a drive mechanism for driving the lifting rod to move is installed on the outer wall of the hopper.

[0006] Furthermore, the top of the silo is provided with a feed inlet, the partition is fixedly installed on the bottom wall of the main material chamber, the liquid level lifting plate is a plate-shaped structure that matches the size of the bottom surface of the main material chamber, a sealing ring is fixedly installed on the side of the liquid level lifting plate, the sealing ring is in close contact with the side wall of the silo and the partition, and a liquid level sensor is fixedly installed on the top side wall of the dispensing chamber, the liquid level sensor is flush with the top of the partition.

[0007] Furthermore, the driving mechanism includes a driving plate, which is fixedly installed at the top of the lifting rod. The driving plate has an L-shaped structure. A slider is fixedly installed at the bottom of the vertical plate of the driving plate. The slider is slidably installed on a guide rail. The guide rail is fixedly installed on the left outer wall of the hopper. A lead screw is provided on the side of the vertical plate of the driving plate. The lead screw is rotatably installed on the left outer wall of the hopper. A lead screw nut is fitted on the lead screw. A connecting seat is fixedly installed on the lead screw nut. The connecting seat is fixedly installed on the driving plate. A driving motor is fixedly installed at the top of the hopper. The power output shaft of the driving motor is connected to the rotating shaft of the lead screw.

[0008] Furthermore, a sealing bushing is fixedly installed on the top of the hopper, and the lifting rod is slidably installed inside the sealing bushing.

[0009] Furthermore, a baffle plate extending along the length of the discharge port is provided at the bottom of the discharge port. The baffle plate is slidably installed on the side wall of the discharge port. The end of the baffle plate near the discharge port has an arc-shaped structure. A fixing frame is fixedly installed on the outer side wall of the discharge port. An electric telescopic rod is fixedly installed on the fixing frame. The power output end of the electric telescopic rod is fixedly connected to the baffle plate.

[0010] Furthermore, support frames are fixedly installed on the front and rear side walls of the hopper, the support frames are fixedly installed on the top of the feeding platform, pressure rollers are rotatably installed at the bottom end of the support frames, and guide rollers are rotatably installed at the left and right ends of the feeding platform.

[0011] The beneficial effects of this utility model are that, through the design of a main material chamber and a distribution chamber in the material hopper, the volume of the main material chamber is changed by adjusting the height of the liquid level lifting plate, so that the electrode liquid in the main material chamber passes through the partition and enters the distribution chamber. During the coating process, the height of the liquid level lifting plate gradually increases, thereby continuously replenishing the electrode liquid in the distribution chamber, so that the liquid volume in the distribution chamber remains consistent, thereby ensuring that the flow rate of the electrode liquid remains uniform, which is beneficial to ensuring the uniformity of coating. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is the front view of the present invention;

[0015] Figure 3 This is the left view of the present invention;

[0016] Figure 4 for Figure 3A schematic diagram of the cross-sectional structure along the AA direction.

[0017] In the diagram: 1. Feeding platform, 2. Hopper, 3. Main material chamber, 4. Distribution chamber, 5. Partition plate, 6. Discharge port, 7. Liquid level lifting plate, 8. Lifting rod, 9. Inlet, 10. Sealing ring, 11. Liquid level sensor, 12. Drive plate, 13. Slider, 14. Guide rail, 15. Lead screw, 16. Lead screw nut, 17. Connecting seat, 18. Drive motor, 19. Sealing bushing, 20. Baffle plate, 21. Fixing frame, 22. Electric telescopic rod, 23. Support frame, 24. Pressure roller, 25. Guide roller. Detailed Implementation

[0018] To more clearly illustrate the technical solution of this utility model, the following description is made in conjunction with the accompanying drawings. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other embodiments can be obtained based on these drawings and embodiments without creative effort, and all of them fall within the protection scope of this utility model.

[0019] according to Figure 1-4 As shown, a coating equipment for lithium battery processing includes a feeding platform 1, a hopper 2 installed above the feeding platform 1, a main material chamber 3 and a distribution chamber 4 inside the hopper 2, a partition 5 between the main material chamber 3 and the distribution chamber 4, the top ends of the main material chamber 3 and the distribution chamber 4 being interconnected, and a discharge port 6 at the bottom end of the distribution chamber 4. A liquid level lifting plate 7 is movably installed inside the main material chamber 3, and a lifting rod 8 is movably installed on the top of the hopper 2. The lifting rod 8 is fixedly connected to the liquid level lifting plate 7, and a drive mechanism for driving the lifting rod 8 to move is installed on the outer wall of the hopper 2.

[0020] In this embodiment, the top of the silo 2 is provided with a feed inlet 9. The partition 5 is fixedly installed on the bottom wall of the main material chamber 3. The left side wall of the partition 5 and the inner wall of the silo 2 form a space to form the main material chamber 3, and the right side wall of the partition 5 and the inner wall of the silo 2 form a space to form a distribution chamber 4. The liquid level lifting plate 7 is a plate-shaped structure that matches the size of the bottom surface of the main material chamber 3. A sealing ring 10 is fixedly installed on the side of the liquid level lifting plate 7. The sealing ring 10 is in close contact with the side walls of the silo 2 and the partition 5. Electrode liquid is injected into the main material chamber 3 through the feed inlet 9. The electrode liquid collects above the liquid level lifting plate 7. The sealing ring 10 seals the gap between the liquid level lifting plate 7 and the silo 2 and the partition 5 to prevent the electrode liquid from flowing into the liquid level lifting plate. Below 7, a sealing bushing 19 is fixedly installed on the top of the hopper 2. The lifting rod 8 is slidably installed in the sealing bushing 19. The connection between the lifting rod 8 and the hopper 2 is sealed by a sealing bearing, thereby preventing the electrode liquid from adhering to the side wall of the lifting rod 8 and being carried away from the hopper 2. A liquid level sensor 11 is fixedly installed on the top side wall of the dispensing chamber 4. The liquid level sensor 11 is flush with the top of the partition 5. The liquid level sensor 11 detects the liquid level in the dispensing chamber 4. When the liquid level in the dispensing chamber 4 is lower than the liquid level sensor 11, the liquid level lifting plate 7 rises, making the volume of the main material chamber 3 smaller. Excess electrode liquid passes over the partition 5 and enters the dispensing chamber 4, thereby ensuring that the liquid level in the dispensing chamber 4 remains consistent.

[0021] In this embodiment, the driving mechanism includes a driving plate 12, which is fixedly installed at the top of the lifting rod 8. The driving plate 12 has an L-shaped structure. A slider 13 is fixedly installed at the bottom of the vertical plate of the driving plate 12. The slider 13 is slidably installed on the guide rail 14, which is fixedly installed on the left outer wall of the hopper 2. A lead screw 15 is provided on the side of the vertical plate of the driving plate 12. The lead screw 15 is rotatably installed on the left outer wall of the hopper 2 through a bearing seat. A lead screw nut 16 is fitted on the lead screw 15. A connecting seat 17 is installed, which is fixedly mounted on the drive plate 12. A drive motor 18 is fixedly mounted on the top of the hopper 2 via a motor bracket. The power output shaft of the drive motor 18 is connected to the rotating shaft of the lead screw 15 via a coupling. The drive motor 18 drives the lead screw 15 to rotate. With the cooperation of the lead screw 15 and the lead screw nut 16, the drive plate 12 moves along the guide rail 14. When the drive plate 12 moves, it will drive the lifting rod 8 to move synchronously, thereby causing the liquid level lifting plate 7 to rise or fall in the main material chamber 3, thereby realizing the volume adjustment of the main material chamber 3.

[0022] In this embodiment, a baffle plate 20 extending along the length of the outlet 6 is provided at the bottom end of the outlet 6. The baffle plate 20 is slidably installed on the side wall of the outlet 6. The end of the baffle plate 20 near the outlet 6 has an arc-shaped structure. A fixing frame 21 is fixedly installed on the outer side wall of the outlet 6. An electric telescopic rod 22 is fixedly installed on the fixing frame 21 through a bracket. The power output end of the electric telescopic rod 22 is fixedly connected to the baffle plate. The baffle plate 20 is moved by the electric telescopic rod 22, which can adjust the gap between the baffle plate 20 and the outlet 6, thereby adjusting the flow rate of the electrode liquid to suit different electrode plates.

[0023] In this embodiment, support frames 23 are fixedly installed on the front and rear side walls of the hopper 2. The support frames 23 are fixedly installed on the top of the feeding platform 1. A pressure roller 24 is rotatably installed at the bottom end of the support frame 23. The pressure roller 24 keeps the electrode plate in close contact with the top surface of the feeding platform 1, which helps to improve the smoothness of the coating. Guide rollers 25 are rotatably installed on the left and right ends of the feeding platform 1 through bearing seats. The guide rollers 25 guide the electrode plate, so that the electrode plate can move smoothly between the conveying equipment and the feeding platform 1.

[0024] In use, this invention uses a liquid level sensor 11 to detect the liquid level in the dispensing chamber 4. When the liquid level in the dispensing chamber 4 is lower than the liquid level sensor 11, the drive motor 18 drives the lifting rod 8 to move, causing the lifting plate 8 to lift the liquid level lifting plate 7 in the main material chamber 3. This reduces the volume of the main material chamber 3, allowing excess electrode liquid to pass over the partition 5 and enter the dispensing chamber 4. This ensures that the liquid volume in the dispensing chamber 4 remains consistent, thereby maintaining a uniform flow rate of the electrode liquid and promoting uniform coating.

[0025] The above embodiments are merely exemplary embodiments of this utility model and are not intended to limit this utility model. The scope of protection of this utility model is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this utility model within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this utility model.

Claims

1. A coating apparatus for lithium battery processing, comprising a feeding table (1), characterized in that: The upper part of the feeding table (1) is provided with a hopper (2), the inside of the hopper (2) is provided with a main material cavity (3) and a distribution cavity (4), the main material cavity (3) and the distribution cavity (4) are provided with a partition plate (5), the top end of the main material cavity (3) and the distribution cavity (4) are communicated with each other, the bottom end of the distribution cavity (4) is provided with a discharge port (6), the inside of the main material cavity (3) is movably provided with a liquid level lifting plate (7), the top of the hopper (2) is movably provided with a lifting rod (8), the lifting rod (8) is fixedly connected with the liquid level lifting plate (7), the outer side wall of the hopper (2) is provided with a driving mechanism for driving the lifting rod (8) to move.

2. The coating apparatus for processing lithium batteries according to claim 1, wherein The top of the hopper (2) is provided with an inlet (9), the partition plate (5) is fixedly installed on the bottom wall of the main material cavity (3), the liquid level lifting plate (7) is a plate-shaped structure matched with the bottom surface of the main material cavity (3), the side edge of the liquid level lifting plate (7) is fixedly provided with a sealing ring (10), the sealing ring (10) is tightly attached to the side wall of the hopper (2) and the partition plate (5), the top end side wall of the distribution cavity (4) is fixedly provided with a liquid level sensor (11), the liquid level sensor (11) is flush with the top end of the partition plate (5).

3. The coating apparatus for processing lithium batteries according to claim 2, wherein The driving mechanism comprises a driving plate (12), the driving plate (12) is fixedly installed on the top end of the lifting rod (8), the driving plate (12) is an L-shaped structure, the vertical plate bottom end of the driving plate (12) is fixedly provided with a sliding block (13), the sliding block (13) is slidably installed on a guide sliding rail (14), the guide sliding rail (14) is fixedly installed on the left outer wall of the hopper (2), the vertical plate side of the driving plate (12) is provided with a lead screw (15), the lead screw (15) is rotatably installed on the left outer wall of the hopper (2), the lead screw (15) is matched with a lead screw nut (16) installed thereon, the lead screw nut (16) is fixedly provided with a connecting seat (17), the connecting seat (17) is fixedly installed on the driving plate (12), the top of the hopper (2) is fixedly provided with a driving motor (18), the power output shaft of the driving motor (18) is connected with the rotating shaft of the lead screw (15).

4. The coating apparatus for processing lithium batteries according to claim 2, wherein The top of the hopper (2) is fixedly provided with a sealing shaft sleeve (19), the lifting rod (8) is slidably installed in the sealing shaft sleeve (19).

5. The coating apparatus for processing lithium batteries according to claim 1, wherein The bottom end of the discharge port (6) is provided with a material blocking plate (20) extending along the length direction of the discharge port (6), the material blocking plate (20) is slidably installed on the side wall of the discharge port (6), one end of the material blocking plate (20) close to the discharge port (6) is a circular arc structure, the outer side wall of the discharge port (6) is fixedly provided with a fixing frame (21), the fixing frame (21) is fixedly provided with an electric telescopic rod (22), the power output end of the electric telescopic rod (22) is fixedly connected with the blocking plate.

6. The coating apparatus for processing lithium batteries according to any one of claims 1 to 5, characterized in that, Support frames (23) are fixedly installed on the front and rear sidewalls of the silo (2), the support frames (23) are fixedly installed on the top of the feeding table (1), pressure rollers (24) are rotatably installed on the bottom ends of the support frames (23), and guide rollers (25) are rotatably installed on the left and right ends of the feeding table (1).

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