Efficient and accurate lithium battery surface UV printing and supplementary coating device

Abstract

The utility model discloses an efficient and accurate lithium battery surface UV printing supplementary coating device, which belongs to the technical field of lithium battery production and comprises a platform, a film thickness detector is arranged on one side of the platform, a supplementary coating device is arranged on the other side of the platform, a positioning seat is arranged between the film thickness detector and the supplementary coating device, and a curing lamp is arranged above the positioning seat. A clamping jaw mechanism is arranged on the center line of one side of the positioning seat in the direction perpendicular to the connection direction of the film thickness detector and the supplementary coating device; the clamping jaw mechanism comprises a clamping jaw longitudinal motor lead screw module, the clamping jaw longitudinal motor lead screw module is connected with a rotating motor, an electric telescopic rod is arranged at the output end of the rotating motor, and an electric clamping jaw is arranged at the output end of the electric telescopic rod; the positioning seat comprises a positioning driving motor fixed on the platform; and the output end of the positioning driving motor is fixedly connected with the center of the bottom surface of the positioning coordinate plate. The efficiency can be improved, the problems that technical quality differences of personnel are different, the operation precision is high, the non-ideal repair coating effect is not prone to being generated, and new defects are prone to being introduced are solved, and the large-scale repair requirement can be met.

Description

Technical Field

[0001] This utility model belongs to the field of lithium battery production technology, specifically relating to a high-efficiency and precise UV printing and recoating device for lithium battery surfaces. Background Technology

[0002] The statements in this section are merely background information related to this utility model and do not necessarily constitute prior art.

[0003] In the production process of lithium batteries, UV adhesive spraying of the outer casing is a key process. It has broad application prospects and important practical value in lithium battery manufacturing and subsequent maintenance. It is used to protect the internal structure of the battery, prevent the battery from being physically damaged or chemically corroded, extend the battery's service life, enhance insulation performance, and improve the appearance.

[0004] However, due to various reasons (such as spraying equipment malfunction, uneven material distribution, environmental factors, etc.), the surface of the coated casing may have defects such as scratches, pinholes, and missed coatings. Alternatively, during the transportation and use of lithium batteries, the printed content on the surface may become blurred or peel off for various reasons. These defects not only affect the product's aesthetics and recognizability but may also negatively impact sales and brand image, necessitating touch-up coating.

[0005] If traditional manual touch-up coating is used, it requires manual identification and coating of each surface one by one, which is not only inefficient, but also prone to errors in operation accuracy due to differences in the technical skills of personnel. This can easily lead to unsatisfactory coating results and the introduction of new defects, making it difficult to meet the needs of large-scale repairs. Utility Model Content

[0006] To address the aforementioned problems, this invention provides a highly efficient and precise UV printing recoating device for lithium battery surfaces. By placing the battery cell on a rotatable positioning base, a film thickness gauge scans the battery cell to quickly and accurately obtain the location and thickness of defects on each surface. The recoating device then applies recoating to these scanned locations. By incorporating a gripper mechanism, the battery cell's placement on the positioning base is changed from horizontal to vertical, enabling scanning and recoating of all six surfaces of the battery cell. This overcomes the inefficiency of manual recoating and, by controlling the recoating device based on the quantitative information of defects obtained from the film thickness gauge scan, it overcomes the problems of operational accuracy errors due to variations in operator skill, leading to unsatisfactory recoating results and the introduction of new defects. It also meets the needs of large-scale repair.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A high-efficiency and precise UV printing recoating device for lithium battery surface includes a platform, a film thickness detector is set on one side of the platform, a recoating device is set on the other side, a positioning seat is set between the film thickness detector and the recoating device, a curing lamp is set above the positioning seat, and a gripper mechanism is set on the centerline of one side of the positioning seat in a direction perpendicular to the connection between the film thickness detector and the recoating device.

[0009] The gripper mechanism includes a gripper longitudinal motor screw module, which is connected to a rotary motor. An electric telescopic rod is installed on the output end of the rotary motor, and an electric gripper is installed on the output end of the electric telescopic rod.

[0010] The positioning base includes a positioning drive motor fixed on the platform, and the output end of the positioning drive motor is fixedly connected to the center of the bottom surface of the positioning coordinate plate.

[0011] Preferably, the positioning coordinate plate is provided with a cell support area and a clamping area, with the cell support area being higher than the clamping area.

[0012] Preferably, the electric gripper includes a gripper motor, which is connected to a pair of flexible grippers via a transmission system.

[0013] Preferably, a distance sensor is provided on the electric gripper, and the distance sensor is disposed between the flexible grippers.

[0014] Preferably, the gripper longitudinal motor screw module includes a gripper longitudinal slide plate, with baffles at both ends of the gripper longitudinal slide plate. A gripper longitudinal drive motor is installed on the outer side of one of the baffles. The output end of the gripper longitudinal drive motor is connected to the gripper longitudinal screw. The gripper longitudinal screw is rotatably connected to the baffles at both ends of the gripper longitudinal slide plate. A gripper longitudinal moving block is threaded onto the gripper longitudinal screw. The bottom of the gripper longitudinal moving block is slidably connected to the gripper longitudinal slide plate. A rotary motor is connected to the side of the gripper longitudinal moving block facing the positioning seat.

[0015] Preferably, the recoating device includes a recoating base fixed on a platform, a longitudinal motor screw module is provided on the recoating base, and a horizontal motor screw module is connected to the longitudinal motor screw module.

[0016] Preferably, the longitudinal motor lead screw module includes a longitudinal slide plate with baffles at both ends. A longitudinal drive motor is installed on the outer side of one of the baffles. The output end of the longitudinal drive motor is connected to the longitudinal lead screw. The longitudinal lead screw is rotatably connected to the baffles at both ends of the longitudinal slide plate. A longitudinal moving block is threaded onto the longitudinal lead screw. The bottom of the longitudinal moving block is slidably connected to the longitudinal slide plate. A horizontal motor lead screw module is fixedly installed on the longitudinal moving block.

[0017] Preferably, the horizontal motor screw module includes a horizontal slide plate with baffles at both ends. A horizontal drive motor is installed on the outer side of one of the baffles. The output end of the horizontal drive motor is connected to the horizontal screw. The horizontal screw is rotatably connected to the baffles at both ends of the horizontal slide plate. A horizontal moving block is threaded onto the horizontal screw. The bottom of the horizontal moving block is slidably connected to the horizontal slide plate. The horizontal motor screw module is set parallel to the platform.

[0018] Preferably, one end of the support arm is fixedly connected to the side of the horizontal moving block facing the film thickness detector, and the other end of the support arm is connected to the touch-up spray nozzle. The touch-up spray nozzle is connected to the painting device through a paint supply pipe. The painting device includes a paint storage tank and a paint supply pump. A position sensor is provided at the bottom of the touch-up spray nozzle or at the connection between the support arm and the touch-up spray nozzle.

[0019] Preferably, the system also includes a PLC controller, wherein the paint supply pump, longitudinal drive motor, horizontal drive motor, gripper longitudinal drive motor, electric telescopic rod, rotary motor, film thickness detector, positioning drive motor, gripper motor, curing lamp, position sensor, and distance sensor are all connected to the PLC controller.

[0020] Compared with the prior art, the advantages and positive effects of this utility model are:

[0021] This invention places the battery cell on a rotatable positioning base and uses a film thickness gauge to scan the cell, quickly and accurately obtaining the location and thickness of defects on each surface. A recoating device then applies recoating to these scanned areas. A gripper mechanism changes the cell's placement on the positioning base from horizontal to vertical, allowing scanning and recoating of all six surfaces. This overcomes the inefficiency of manual recoating. Furthermore, by controlling the recoating device based on the quantitative information of defects obtained from the film thickness gauge scan, it not only overcomes the problems of operational precision errors due to differences in operator skill, leading to unsatisfactory recoating results and the introduction of new defects, but also meets the needs of large-scale repair. Attached Figure Description

[0022] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0023] Figure 1 This is an overall schematic diagram of the printing and recoating device according to an embodiment of the present utility model;

[0024] Figure 2 This is a schematic diagram of the gripper mechanism according to an embodiment of the present utility model;

[0025] Figure 3 This is a schematic diagram of the recoating device according to an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the positioning coordinate plate according to an embodiment of the present utility model;

[0027] In the picture:

[0028] 1. Platform; 2. Film thickness gauge; 3. Re-coating device; 31. Longitudinal motor lead screw module; 32. Horizontal motor lead screw module; 33. Support arm; 34. Re-coating nozzle; 35. Re-coating base; 4. Positioning seat; 41. Positioning coordinate plate; 411. Cell support area; 412. Clamping area; 5. Curing lamp; 6. Gripper mechanism; 61. Electric gripper; 611. Flexible gripper; 612. Distance sensor; 62. Electric telescopic rod; 63. Rotary motor; 64. Gripper longitudinal motor lead screw module; 7. Cell product. Detailed Implementation

[0029] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0030] The present invention will now be described in detail with reference to the accompanying drawings. This embodiment discloses a highly efficient and precise UV printing recoating device for lithium battery surfaces, such as... Figure 1 As shown, the system includes a platform 1, with a film thickness gauge 2 mounted on one side and a recoating device 3 mounted on the other side. A rotatable positioning seat 4 is positioned between the film thickness gauge 2 and the recoating device 3. A curing lamp 5 is mounted above the positioning seat 4. A gripper mechanism 6 is positioned on the centerline of one side of the positioning seat 4, perpendicular to the direction connecting the film thickness gauge 2 and the recoating device 3. The system also includes a PLC controller, which connects to the film thickness gauge 2, the recoating device 3, the positioning seat 4, the curing lamp 5, and the gripper mechanism 6.

[0031] The curing lamp 5 can be suspended on the horizontal bar of an L-shaped support rod. The vertical bar of the support rod is set on one side of the platform, and the horizontal bar is located above the platform. Adjust the position of the L-shaped support rod so that the curing lamp 5 is above the positioning seat 4.

[0032] The defective battery cell product 7 is placed on the positioning seat 4, and then the defective battery cell product is detected by the film thickness detector 2. The defective location, defect thickness and other information of the battery cell product are detected and transmitted to the PLC controller. Then the PLC controller can control the recoating device 3 to perform corresponding recoating treatment on the defective part of the battery cell product.

[0033] In this embodiment, the film thickness measuring instrument 2 adopts the photothermal coating thickness measuring instrument in the prior art. The working principle is to use the difference in thermal properties between the coating and the substrate to achieve non-contact and non-destructive measurement of the coating thickness. The film thickness measuring instrument uses a light source to briefly pulse the coating to be measured, and then the built-in sensor records the temperature of the coating over time from a distance. The surface temperature of the coating to be measured decreases dynamically according to the coating thickness and its thermal properties. The algorithm analyzes the dynamic temperature distribution of the surface of the coating to be measured, and finally quantitatively determines the thickness and position information of the coating to be measured, and uploads it to the PLC controller.

[0034] In this embodiment, the positioning base 4 includes a positioning coordinate plate 41. The center of the bottom surface of the positioning coordinate plate 41 is fixedly connected to the output end of a positioning drive motor (not shown in the figure). The positioning drive motor is fixedly mounted on the platform 1, and the positioning drive motor drives the positioning coordinate plate 41 to rotate, which is achievable with existing technology. A defective battery cell product is placed on the positioning coordinate plate 41, and the film thickness detector 2 scans the current face of the battery cell product. After scanning one face, the PLC controller controls the positioning drive motor to rotate the positioning coordinate plate 41 90°, presenting the next face in front of the film thickness detector, until all four faces of the current battery cell product have been scanned.

[0035] It is understandable that the center of the positioning coordinate plate 41 can be aligned with the center of the film thickness detector 2. When the film thickness detector 2 scans the battery cell product 7 on the positioning coordinate plate 41, the origin of the obtained position information is the center of the positioning coordinate plate 41.

[0036] like Figure 4 As shown, the positioning coordinate plate 41 is provided with a cell support area 411 and a clamping area 412, with the cell support area 411 being higher than the clamping area 412. The cell support area 411 is used to support the cell product, while the clamping area 412 is a reserved area for clamping the cell product. The length of the cell support area 411 is less than the length of the cell product 7, and the length of the positioning coordinate plate is greater than the length of the cell product 7. The cell product 7 is placed horizontally, that is, the surface with the largest area is placed parallel to the platform, and the center of the cell product 7 is approximately located at the center of the cell support area 411. In this embodiment, the positioning coordinate plate 41, the cell support area 411, and the cell product 7 are all rectangular.

[0037] The gripper mechanism 6 is designed to enable the identification and recoating of all six sides of the battery cell product 7. The gripper mechanism 6 is used to switch the defective battery cell product 7 from a horizontal to a vertical position, so that the other two sides can also be presented in front of the film thickness detector 2 for scanning.

[0038] Specifically, such as Figure 2As shown, the gripper mechanism 6 includes an electric gripper 61. In this embodiment, the electric gripper adopts existing technology, the difference being that the gripper here is a pair of flexible grippers 611. Rubber cushioning material is provided on the opposing surfaces of the flexible grippers 611 to prevent scratches when gripping the battery cell product. The electric gripper also includes a gripper motor and a transmission system. The gripper motor is connected to the pair of flexible grippers 611 through the transmission system. The gripper motor is connected to a PLC controller, which controls the gripper motor to drive the pair of flexible grippers 611 to perform gripping or releasing operations on defective battery cell products. This is similar to the existing EPG series electric parallel grippers.

[0039] The gripper mechanism 6 also includes an electric telescopic rod 62. The output end of the electric telescopic rod 62 is connected to the housing of the electric gripper through a connecting plate. The electric telescopic rod 62 is connected to a PLC controller, which can control the start, stop and extension stroke of the electric telescopic rod 62, thereby driving the electric gripper 61 to move toward the battery cell product 7.

[0040] It also includes a rotary motor 63, the output end of which is connected to the housing of the electric telescopic rod 62 via a connecting plate. The rotary motor 63 is connected to a PLC controller, which can control the start, stop, and rotation of the rotary motor 63. The PLC controller can control the rotation of the rotary motor 63, thereby driving the electric telescopic rod 62 to rotate, and ultimately driving the electric gripper 61 to rotate, so that the flexible gripper 611 can change from being parallel to the platform to being perpendicular to the platform.

[0041] A distance sensor 612 is provided on the electric gripper 61. The distance sensor 612 is located between the flexible grippers 611 and is connected to the PLC controller. It is used to detect the distance between the electric gripper and the battery cell product 7. When the distance detected by the distance sensor 612 reaches the set value, the PLC controller can control the gripper motor of the electric gripper 61 to work, thereby driving the flexible gripper 611 to grip the battery cell product 7.

[0042] It also includes a gripper longitudinal motor screw module 64, which is perpendicular to the platform and located at the center line of the positioning coordinate plate 41. The gripper longitudinal motor screw module 64 includes a gripper longitudinal slide plate with baffles at both ends. A gripper longitudinal drive motor is mounted on the outer side of one of the baffles. The output end of the gripper longitudinal drive motor is connected to the gripper longitudinal screw. The gripper longitudinal screw is rotatably connected to the baffles at both ends of the gripper longitudinal slide plate. A gripper longitudinal moving block is threaded onto the gripper longitudinal screw. The bottom of the gripper longitudinal moving block is slidably connected to the gripper longitudinal slide plate. The rotation of the gripper longitudinal drive motor drives the gripper longitudinal moving block to move on the gripper longitudinal slide plate. The housing of the rotary motor 63 is connected to the side of the gripper longitudinal moving block facing the positioning seat via a connecting plate. The gripper longitudinal motor screw module 64 can drive the rotary motor 63 to move up and down relative to the platform.

[0043] During operation, once the film thickness detector 2 has completed scanning the four surfaces, the PLC controller controls the electric telescopic rod 62 to extend until the distance sensor 612 detects that the distance to the battery cell product 7 has reached the set value. At this point, the electric telescopic rod 62 stops extending, and then the electric gripper drives the flexible gripper 611 to grip the battery cell product 7.

[0044] Understandably, during this clamping process, one flexible gripper 611 is positioned above the battery cell product 7, while the other flexible gripper 611 is located below the battery cell product 7, within the clamping area 412. The clamping area 412 is designed to facilitate the flexible gripper 611 extending below the battery cell product 7. It is also understandable that the length of the clamping area 412 is greater than the length of the flexible gripper 611.

[0045] After the flexible gripper 611 clamps the battery cell product 7, the PLC controller then controls the gripper's longitudinal motor screw module 64 to start and drive the electric gripper upward to a set position, where it stops. Then, it controls the rotary motor to rotate 90°, and then controls the gripper's longitudinal motor screw module 64 to lower the battery cell product 7 onto the positioning coordinate plate 41. Next, it controls the electric gripper to release the flexible gripper, and then controls the electric telescopic rod 62 to reset. Finally, the PLC controller controls the film thickness detector 2 to continue scanning the remaining two sides of the battery cell product 7.

[0046] Understandably, the PLC controller then controls the start of the gripper longitudinal motor screw module 64 and drives the electric gripper to move upward to a set position equal to the width of the largest surface of the battery cell product. Because the gripper longitudinal motor screw module 64 is located at the center line of the positioning coordinate plate 41, and when the battery cell product 7 is placed, the surface with the largest area is placed parallel to the platform, and the center of the battery cell product 7 is approximately located at the center of the battery cell support area 411, after the flexible gripper 611 clamps the battery cell product 7, when it rises to the height of the maximum surface width of the battery cell product, it can prevent the battery cell product 7 from contacting the positioning coordinate plate 41 when the rotary motor rotates 90°.

[0047] After scanning is complete, a touch-up coating operation is required. In this embodiment, as follows: Figure 3As shown, the touch-up coating device 3 includes a longitudinal motor screw module 31 and a horizontal motor screw module 32. The longitudinal motor screw module 31 is connected to the horizontal motor screw module 32, and the longitudinal motor screw module 31 drives the horizontal motor screw module 32 to move in a direction perpendicular to the platform 1. Specifically, the longitudinal motor screw module 31 includes a longitudinal slide plate with baffles at both ends. A longitudinal drive motor is mounted on the outer side of one of the baffles, and the output end of the longitudinal drive motor is connected to the longitudinal screw. The longitudinal screw is rotatably connected to the baffles at both ends of the longitudinal slide plate. A longitudinal moving block is threaded onto the longitudinal screw, and the bottom of the longitudinal moving block is slidably connected to the longitudinal slide plate. The rotation of the longitudinal drive motor drives the longitudinal moving block to move on the longitudinal slide plate. The longitudinal motor screw module 31 is set perpendicular to the platform 1 via the touch-up coating base 35, and the horizontal motor screw module 32 is fixedly mounted on the longitudinal moving block. The horizontal motor screw module is set parallel to the platform.

[0048] The horizontal motor lead screw module 32 includes a horizontal slide plate with baffles at both ends. A horizontal drive motor is mounted on the outer side of one of the baffles, and its output end is connected to the horizontal lead screw. The lead screw is rotatably connected to the baffles at both ends of the horizontal slide plate. A horizontal moving block is threaded onto the lead screw, and its bottom is slidably connected to the horizontal slide plate. The rotation of the horizontal drive motor causes the horizontal moving block to move on the horizontal slide plate. The housing of the horizontal drive motor is connected to the longitudinal moving block via a connecting plate. Both the longitudinal and horizontal drive motors are connected to a PLC controller, which controls the start and stop of the motors.

[0049] It is understandable that the gripper longitudinal motor screw module 64, the horizontal motor screw module 32, and the longitudinal motor screw module 31 all use existing motor screw modules, such as the FSK40 ball screw linear module.

[0050] In this embodiment, one end of a support arm 33 is fixedly connected to the side of the horizontal moving block facing the film thickness detector 2, and the other end of the support arm 33 is fixedly connected to a touch-up spray nozzle 34. The touch-up spray nozzle 34 is connected to a painting device through a paint supply pipe. The painting device adopts existing technology and includes a paint storage tank and a paint supply pump, which is connected to a PLC controller. During painting, based on the scanning results of the film thickness detector on each side of the defective battery cell product, the PLC controller controls the paint supply pump to start, and the touch-up spray nozzle 34 sprays touch-up paint to perform touch-up coating on the current side of the defective battery cell product. Once the touch-up coating on the current side is completed, the PLC controller controls the paint supply pump to stop, and the touch-up spray nozzle 34 stops the touch-up coating.

[0051] In this embodiment, a position sensor is provided at the bottom of the touch-up spray nozzle 34 or at the connection between the support arm 33 and the touch-up spray nozzle 34 to monitor the position of the touch-up spray nozzle 34. The position sensor is connected to the PLC controller, and the PLC controller controls the start and stop of the longitudinal drive motor and the horizontal drive motor according to the position information of the touch-up spray nozzle transmitted by the position sensor, thereby controlling the position movement of the touch-up spray nozzle 34.

[0052] Understandably, the strokes of both the longitudinal motor lead screw module 31 and the horizontal motor lead screw module 32 are greater than the side length of the battery cell product 7, ensuring that each surface of the battery cell product 7 is coated.

[0053] After scanning is complete, the PLC controller controls the recoating device based on the information from each surface scanned by the film thickness gauge 2. It is important to note that during recoating, the PLC controller activates the curing lamp 5 to aid in the rapid curing of the recoated paint. The PLC controller compares the position information of the recoating nozzle from the position sensor with the information from each surface scanned by the film thickness gauge 2, controlling the start and stop of the longitudinal and horizontal drive motors to move the recoating nozzle 34 and simultaneously control the start and stop of the paint supply pump. After the previous surface is recoated, the PLC controller controls the positioning drive motor to rotate the positioning coordinate plate 41 90° for the next surface recoating operation.

[0054] Understandably, after the four sides are coated, under the action of the curing lamp 5, the PLC controller will control the gripper mechanism 6 to change the battery cell product 7 from vertical to horizontal placement; then the PLC controller will control the coating device and the positioning drive motor to coat the remaining two sides.

[0055] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A high-efficiency and precise UV printing recoating device for lithium battery surfaces, characterized in that, The system includes a platform, with a film thickness gauge installed on one side and a recoating device installed on the other side. A positioning seat is installed between the film thickness gauge and the recoating device, and a curing lamp is installed above the positioning seat. A gripper mechanism is installed on the centerline of one side of the positioning seat in a direction perpendicular to the connection between the film thickness gauge and the recoating device. The gripper mechanism includes a gripper longitudinal motor screw module, which is connected to a rotary motor. An electric telescopic rod is installed on the output end of the rotary motor, and an electric gripper is installed on the output end of the electric telescopic rod. The positioning base includes a positioning drive motor fixed on the platform, and the output end of the positioning drive motor is fixedly connected to the center of the bottom surface of the positioning coordinate plate.

2. A high-efficiency and precise lithium battery surface UV printing and coating device according to claim 1, characterized in that, The positioning coordinate plate is provided with a cell support area and a clamping area, with the cell support area being higher than the clamping area.

3. A high efficient and precise lithium battery surface UV printing and coating device according to claim 1, characterized in that, The electric gripper includes a gripper motor, which is connected to a pair of flexible grippers via a transmission system.

4. A high-efficiency and precise lithium battery surface UV printing and coating device according to claim 3, characterized in that, The electric gripper is equipped with a distance sensor, which is positioned between the flexible grippers.

5. A high efficient and precise lithium battery surface UV printing and coating device according to claim 1, characterized in that, The gripper longitudinal motor screw module includes a gripper longitudinal slide plate, with baffles at both ends of the gripper longitudinal slide plate. A gripper longitudinal drive motor is installed on the outer side of one of the baffles. The output end of the gripper longitudinal drive motor is connected to the gripper longitudinal screw. The gripper longitudinal screw is rotatably connected to the baffles at both ends of the gripper longitudinal slide plate. A gripper longitudinal moving block is threaded onto the gripper longitudinal screw. The bottom of the gripper longitudinal moving block is slidably connected to the gripper longitudinal slide plate. A rotary motor is connected to the side of the gripper longitudinal moving block facing the positioning seat.

6. A high efficient and precise lithium battery surface UV printing and coating device according to claim 1, characterized in that, The recoating device includes a recoating base fixed on a platform, a longitudinal motor screw module mounted on the recoating base, and a horizontal motor screw module connected to the longitudinal motor screw module.

7. A high efficiency and precise lithium battery surface UV printing and coating device according to claim 6, characterized in that, The longitudinal motor lead screw module includes a longitudinal slide plate with baffles at both ends. A longitudinal drive motor is installed on the outer side of one of the baffles. The output end of the longitudinal drive motor is connected to the longitudinal lead screw. The longitudinal lead screw is rotatably connected to the baffles at both ends of the longitudinal slide plate. A longitudinal moving block is threaded onto the longitudinal lead screw. The bottom of the longitudinal moving block is slidably connected to the longitudinal slide plate. A horizontal motor lead screw module is fixedly installed on the longitudinal moving block.

8. A high efficient and precise lithium battery surface UV printing and coating device according to claim 6, characterized in that, The horizontal motor screw module includes a horizontal slide plate with baffles at both ends. A horizontal drive motor is installed on the outer side of one of the baffles. The output end of the horizontal drive motor is connected to the horizontal screw. The horizontal screw is rotatably connected to the baffles at both ends of the horizontal slide plate. A horizontal moving block is threaded onto the horizontal screw. The bottom of the horizontal moving block is slidably connected to the horizontal slide plate. The horizontal motor screw module is set parallel to the platform.

9. A high efficient and precise lithium battery surface UV printing and coating device according to claim 8, characterized in that, The side of the horizontal moving block facing the film thickness detector is fixedly connected to one end of the support arm, and the other end of the support arm is connected to the touch-up spray nozzle. The touch-up spray nozzle is connected to the painting device through the paint supply pipe. The painting device includes a paint storage tank and a paint supply pump. A position sensor is installed at the bottom of the touch-up spray nozzle or at the connection between the support arm and the touch-up spray nozzle.

10. A high efficiency and precise lithium battery surface UV printing and coating device according to claim 9, characterized in that, It also includes a PLC controller, and the paint supply pump, longitudinal drive motor, horizontal drive motor, gripper longitudinal drive motor, electric telescopic rod, rotary motor, film thickness detector, positioning drive motor, gripper motor, curing lamp, position sensor, and distance sensor are all connected to the PLC controller.

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