Battery cell uv spraying equipment

Abstract

The utility model discloses battery cell uv spraying equipment which comprises a first spraying device, a second spraying device and a transfer mechanism, the first spraying device comprises a first conveying line, a first cleaning mechanism, a first spraying mechanism and a first curing mechanism, and the second spraying device comprises a second conveying line, a second cleaning mechanism, a second spraying mechanism and a second curing mechanism. The transfer mechanism is in butt joint with the first conveying line and the second conveying line, the first cleaning mechanism and the second cleaning mechanism are used for cleaning the surfaces of the battery cells, and the first spraying mechanism and the second spraying mechanism are used for spraying uv insulating coatings on the upper surfaces, the lower surfaces and the four side faces of the battery cells; the first curing mechanism and the second curing mechanism are used for curing uv insulating coatings on the upper surface, the lower surface and the four side surfaces of the battery cell; the uv spraying device for the battery cell adopts a mode of spraying the uv ink on the surface of the battery cell, realizes insulation treatment on the surface of the battery cell, and has the advantages of simple process and high working efficiency.

Description

Technical Field

[0001] This application belongs to the technical field of lithium battery production equipment, and in particular relates to a cell UV spraying equipment. Background Technology

[0002] A battery cell module is formed by stacking multiple battery cells in sequence. Due to the small spacing between adjacent battery cells in the battery cell module, insulation treatment is required between two adjacent battery cells. The usual insulation treatment is to coat the outer layer of the battery cell. However, the sealing performance of the coating treatment is poor and the insulation effect is unstable, resulting in poor safety. In addition, the coating treatment process is complicated and the production efficiency is low. Utility Model Content

[0003] The purpose of this application is to provide a UV coating equipment for battery cells to solve the aforementioned problems existing in the current method of insulating battery cells by coating.

[0004] To achieve this objective, the following technical solution is adopted in this application:

[0005] This application discloses a UV coating equipment for battery cells, comprising a first coating device, a second coating device, and a transfer mechanism, wherein:

[0006] The first spraying device includes a first conveyor line, a first cleaning mechanism, a first spraying mechanism, and a first curing mechanism. The first conveyor line has a first cleaning station, a first spraying station, and a first curing station arranged sequentially along its conveying path. The first conveyor line is configured to convey the battery cell to be sprayed sequentially to the first cleaning station, the first spraying station, and the first curing station. The first cleaning mechanism is configured to clean the surface of the battery cell at the first cleaning station. The first spraying mechanism is configured to spray a UV insulating coating onto the upper surface and two opposite sides of the battery cell at the first spraying station. The first curing mechanism is configured to cure the UV insulating coating on the upper surface and two opposite sides of the battery cell at the first curing station.

[0007] The second spraying device includes a second conveyor line, a second cleaning mechanism, a second spraying mechanism, and a second curing mechanism. A transfer mechanism connects to the first and second conveyor lines and is configured to transfer the battery cells from the first unloading station of the first conveyor line to the second loading station of the second conveyor line. The second conveyor line has a second cleaning station, a second spraying station, and a second curing station arranged sequentially along its conveying path. The second conveyor line is configured to sequentially transport the received battery cells to the second cleaning station, the second spraying station, and the second curing station. The second cleaning mechanism is configured to clean the surface of the battery cells at the second cleaning station. The second spraying mechanism is configured to spray a UV insulating coating onto the lower surface and the remaining two opposite sides of the battery cells at the second spraying station. The second curing mechanism is configured to cure the UV insulating coating on the lower surface and the remaining two opposite sides of the battery cells at the second curing station.

[0008] The battery cell UV coating equipment proposed in this application uses UV ink spraying on the surface of the battery cell to achieve insulation treatment of the battery cell surface. Compared with the existing coating method, it has the advantages of simple process and high working efficiency. At the same time, the battery cell UV coating equipment is set up to include a first coating device, a second coating device and a transfer mechanism, which divides the entire battery cell coating process into two independent coating steps. The two coating steps are controlled separately, which has the advantages of easy implementation, easy control, high production efficiency, improved product quality and good flexibility.

[0009] Optionally, the first conveyor line and the second conveyor line are arranged at intervals along the first direction, and both the first conveyor line and the second conveyor line are "U"-shaped annular conveyor lines.

[0010] By setting the first conveyor line and the second conveyor line as a “U”-shaped annular conveyor line arranged at intervals along the first direction, a first conveyor line and a second conveyor line with high conveying efficiency, small space occupation and reasonable layout are provided.

[0011] Optionally, the first conveyor line and the second conveyor line are arranged in parallel and spaced apart and extend along the first direction, and the conveying directions of the first conveyor line and the second conveyor line are opposite.

[0012] Alternatively, the first and second conveyor lines may have the same conveying direction and be collinear.

[0013] By setting the first and second conveyor lines to extend along the first direction and be arranged in parallel, and by making the conveying directions of the first and second conveyor lines opposite, the overall length of the spraying equipment in the first direction is shortened, making it suitable for installation environments with shorter lengths in the first direction; by setting the first and second conveyor lines to have the same conveying direction and be collinear, the spraying equipment is adapted to long and narrow installation environments.

[0014] Optionally, the length direction of the battery cell on the first conveyor line is perpendicular to the conveying direction of the first conveyor line, and the length direction of the battery cell on the second conveyor line is the same as the conveying direction of the second conveyor line. The transfer mechanism includes a transfer component and at least one set of flipping components, wherein:

[0015] The drive end of the transfer component is connected to at least one set of flipping components, and the transfer component is configured to drive the flipping components to slide and move up and down along a first direction;

[0016] The flipping assembly includes a flipping drive, a V-shaped connector, and a cell gripper. The flipping drive is installed on the drive end of the transfer assembly. The drive end of the flipping drive is connected to the first end of the connector. The cell gripper is installed on the second end of the connector. The cell gripper is configured to clamp or release a cell. The flipping drive is configured to drive the connector to rotate by a preset angle, thereby causing the cell gripper to rotate, so that the cell held by the cell gripper is horizontally reversed by 90° and flipped so that its lower surface faces upward.

[0017] The transfer component drives the flipping component to slide and descend along the first direction towards the first conveyor line, so as to clamp the battery cell with its upper surface facing up on the first unloading station through the battery cell gripper. The transfer component drives the flipping component to slide and descend along the first direction towards the second conveyor line, so as to release the battery cell after it has been flipped and reversed by the flipping component onto the second conveyor line. This realizes the automatic transfer of the battery cell after it has been sprayed on the first conveyor line to the second conveyor line. At the same time, the flipping component can flip and horizontally reverse the battery cell by 90° while the battery cell is being transferred, so that the lower surface of the battery cell faces up and the length direction of the battery cell is the same as the conveying direction of the second conveyor line. This facilitates the subsequent spraying of the lower surface and the two opposite sides of the battery cell along its length, thereby improving the spraying efficiency of the battery cell.

[0018] Optionally, the first spraying mechanism includes a first spraying component and a second spraying component. The first spraying component is disposed above the first spraying station and is configured to spray an insulating coating onto the upper surface of the battery cell. The second spraying component is disposed on both sides of the first spraying station and is configured to spray an insulating coating onto the two sides of the battery cell in the width direction.

[0019] The second spraying mechanism includes a third spraying component and a fourth spraying component. The third spraying component is located above the second spraying station and is configured to spray an insulating coating onto the lower surface of the battery cell. The fourth spraying component is located on both sides of the second spraying station and is configured to spray an insulating coating onto the two sides of the battery cell along its length.

[0020] An insulating coating is applied to the upper surface of the battery cell by a first spraying component, and an insulating coating is applied to the two sides of the battery cell in the width direction by a second spraying component. This achieves step-by-step spraying of the upper surface and the two opposite sides in the width direction of the battery cell, providing a first spraying mechanism that is easy to control and has high spraying efficiency. An insulating coating is applied to the lower surface of the battery cell by a third spraying component, and an insulating coating is applied to the two sides of the battery cell in the length direction by a fourth spraying component. This achieves step-by-step spraying of the lower surface and the two opposite sides in the length direction of the battery cell, providing a second spraying mechanism that is easy to control and has high spraying efficiency.

[0021] Optionally, the first spraying device further includes a first visual inspection mechanism, which is disposed between the first cleaning mechanism and the first spraying mechanism, and is configured to perform visual inspection on the battery cells after cleaning by the first cleaning mechanism.

[0022] The second spraying device also includes a second visual inspection mechanism, which is located between the second cleaning mechanism and the second spraying mechanism. The second visual inspection mechanism is configured to perform visual inspection on the battery cells after they have been cleaned by the second cleaning mechanism.

[0023] By using the first and second visual inspection mechanisms, the first and second spraying mechanisms can perform visual inspection on the battery cells before spraying them, in order to locate and position the battery cells so that the subsequent first and second spraying mechanisms can accurately spray the battery cells, which is beneficial to improving the spraying effect of the spraying equipment.

[0024] Optionally, the first coating device further includes a first film thickness detection mechanism, which is located after the first curing mechanism and is configured to detect the thickness of the UV insulating coating on the surface of the battery cell after curing by the first curing mechanism.

[0025] The second coating device also includes a second film thickness detection mechanism, which is located after the second curing mechanism. The second film thickness detection mechanism is configured to detect the thickness of the UV insulating coating on the surface of the battery cell after it has been cured by the second curing mechanism.

[0026] The first and second film thickness detection mechanisms enable online thickness detection of the UV insulation coating on the battery cells after spraying by the first and second spraying mechanisms, ensuring the spraying quality of the spraying equipment and improving the processing efficiency of the battery cells.

[0027] Optionally, the first coating device also includes a first conveying mechanism and a first NG conveyor line. The first conveying mechanism is located after the first unloading station. The first conveying mechanism connects to the first conveyor line and the first NG conveyor line. The first conveying mechanism is configured to pick up the battery cells that fail the inspection by the first vision inspection mechanism or the first film thickness inspection mechanism on the first conveyor line and release the picked-up battery cells to the first NG conveyor line.

[0028] The second coating device also includes a second transport mechanism and a second NG conveyor line. The second transport mechanism is located after the second unloading station. The second transport mechanism is connected to the second conveyor line and the second NG conveyor line. The second transport mechanism is configured to pick up the battery cells that fail the inspection by the second vision inspection mechanism or the second film thickness inspection mechanism on the second conveyor line and release the picked-up battery cells to the second NG conveyor line.

[0029] Through the cooperation of the first handling mechanism and the first NG conveyor line, the automatic blanking of the unqualified cells on the first conveyor line is achieved; through the cooperation of the second handling mechanism and the second NG conveyor line, the automatic blanking of the unqualified cells on the second conveyor line is achieved; further improving the spraying efficiency of the cells.

[0030] Optionally, the first spraying device further includes a loading handling mechanism configured to pick up the cells to be sprayed and transport the picked-up cells to the first loading station of the first conveyor line;

[0031] The second spraying device further includes an unloading handling mechanism configured to pick up the sprayed cells at the second unloading station and transport the picked-up cells to the next process.

[0032] By providing the loading handling mechanism, the automatic transportation of the cells to be sprayed onto the first conveyor line is achieved; by providing the unloading handling mechanism, the automatic blanking of the sprayed cells is achieved, further improving the spraying efficiency of the cells.

[0033] Optionally, the first conveyor line and the second conveyor line have the same structure. The first conveyor line includes a magnetic levitation conveyor line and a plurality of cell fixtures, where:

[0034] The magnetic levitation conveyor line includes a stator, a plurality of rotors, and auxiliary supports. The stator is generally in a "square" shape, and the corners of the stator are convex arc-shaped. The rotors are horizontally slidably mounted on the stator, and the corresponding rotors are driven to horizontally slide through the cooperation of the coils of the stator and the magnetic strips of the rotors;

[0035] The auxiliary supports are arranged at the lower end of the stator and are arranged circumferentially along the stator. A guide wheel set is provided at the lower end of the rotor, and the guide wheel set is clamped on the auxiliary supports and can slide along the length direction of the auxiliary supports;

[0036] The cell fixtures are mounted on the rotors and are configured to carry and position the cells.

[0037] By setting both the first conveyor line and the second conveyor line to include a magnetic levitation conveyor line and a plurality of cell fixtures, each cell fixture can move independently, and the corresponding number of cell fixtures can be configured for each processing station according to the actual production efficiency, facilitating the control of cell spraying, and having the advantages of high conveying efficiency, high conveying accuracy, strong flexibility, and wide application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a schematic structural diagram of the cell uv spraying equipment proposed in the embodiment of the present application;

[0039] Figure 2This is a schematic diagram of the structure of the first spraying device of the battery cell UV spraying equipment proposed in the embodiments of this application;

[0040] Figure 3 This is a three-dimensional structural schematic diagram of the transfer mechanism of the battery cell UV spraying equipment proposed in the embodiments of this application;

[0041] Figure 4 This is a three-dimensional structural schematic diagram of the flipping component of the battery cell UV spraying equipment proposed in the embodiments of this application;

[0042] Figure 5 This is a side view schematic diagram of the flipping component of the battery cell UV spraying equipment proposed in the embodiments of this application;

[0043] Figure 6 This is a schematic diagram of the structure of the second spraying device of the battery cell UV spraying equipment proposed in the embodiments of this application;

[0044] Figure 7 This is a three-dimensional structural diagram of the magnetic levitation conveyor line of the battery cell UV spraying equipment proposed in the embodiments of this application.

[0045] Figures 1 to 7 The following reference numerals are included:

[0046] First spraying device 10: First conveyor line 11, first cleaning station 110, first spraying station 111, first curing station 112, first unloading station 113, first loading station 114, magnetic levitation conveyor line 115, stator 1150, mover 1151, auxiliary support component 1152, guide wheel assembly 1153, first cleaning mechanism 12, first spraying mechanism 13, first spraying assembly 130, second spraying assembly 131, first curing mechanism 14, first visual inspection mechanism 15, first film thickness inspection mechanism 16, first handling mechanism 17, first NG conveyor line 18, loading and handling mechanism 19;

[0047] Second spraying device 20: Second conveyor line 21, second loading station 210, second cleaning station 211, second spraying station 212, second curing station 213, second unloading station 214, second cleaning mechanism 22, second spraying mechanism 23, third spraying component 230, fourth spraying component 231, second curing mechanism 24, second visual inspection mechanism 25, second film thickness inspection mechanism 26, second handling mechanism 27, second NG conveyor line 28, unloading and handling mechanism 29;

[0048] Transfer mechanism 30: transfer component 31, horizontal linear module 310, horizontal seat 311, lifting linear module 312, lifting seat 313, flipping component 32, flipping drive component 320, connector 321, cell gripper 322;

[0049] Battery cell 40. Detailed Implementation

[0050] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0051] A battery cell module is formed by stacking multiple battery cells in sequence. Due to the small spacing between adjacent battery cells in the battery cell module, insulation treatment is required between two adjacent battery cells. The usual insulation treatment is to coat the outer layer of the battery cell. However, the sealing performance of the coating treatment is poor and the insulation effect is unstable, resulting in poor safety. In addition, the coating treatment process is complicated and the production efficiency is low.

[0052] Therefore, this application proposes a UV coating device for battery cells. Please refer to [link / reference]. Figure 1 , Figure 2 and Figure 6As shown in the embodiment of this application, the battery cell UV spraying equipment includes a first spraying device 10, a second spraying device 20, and a transfer mechanism 30. The first spraying device 10 includes a first conveyor line 11, a first cleaning mechanism 12, a first spraying mechanism 13, and a first curing mechanism 14. The first conveyor line 11 has a first cleaning station 110, a first spraying station 111, and a first curing station 112 arranged sequentially on its conveying path. The first conveyor line 11 is configured to sequentially convey the battery cell 40 to be sprayed to the first cleaning station 11. 0. A first spraying station 111 and a first curing station 112 are provided. A first cleaning mechanism 12 is configured to clean the surface of the battery cell 40 at the first cleaning station 110. A first spraying mechanism 13 is configured to spray a UV insulating coating onto the upper surface and two opposite sides of the battery cell 40 at the first spraying station 111. A first curing mechanism 14 is configured to cure the UV insulating coating on the upper surface and two opposite sides of the battery cell 40 at the first curing station 112. A second spraying device 20 includes a second conveyor line 21. The system includes a second cleaning mechanism 22, a second spraying mechanism 23, and a second curing mechanism 24. A transfer mechanism 30 connects to the first conveyor line 11 and the second conveyor line 21. The transfer mechanism 30 is configured to transfer the battery cells from the first unloading station 113 of the first conveyor line 11 to the second loading station 210 of the second conveyor line 21. The second conveyor line 21 has a second cleaning station 211, a second spraying station 212, and a second curing station 213 arranged sequentially along its conveying path. The second conveyor line 21 is configured to sequentially receive the battery cells 40. The cells are conveyed to the second cleaning station 211, the second spraying station 212, and the second curing station 213. The second cleaning mechanism 22 is configured to clean the surface of the cell 40 at the second cleaning station 211. The second spraying mechanism 23 is configured to spray a UV insulating coating on the lower surface and the remaining two opposite sides of the cell 40 at the second spraying station 212. The second curing mechanism 24 is configured to cure the UV insulating coating on the lower surface and the remaining two opposite sides of the cell 40 at the second curing station 213.

[0053] Specifically, both the first cleaning mechanism 12 and the second cleaning mechanism 22 adopt plasma cleaning machines. The general working principle of the plasma cleaning machine is as follows: in the vacuum chamber, high-energy disordered plasma is generated by the radio frequency power supply under certain pressure. The plasma bombards the surface of the battery cell 40 to achieve the purpose of cleaning the battery cell 40.

[0054] Specifically, both the first curing mechanism 14 and the second curing mechanism 24 use UV curing machines. By irradiating the surface of the battery cell with UV (ultraviolet) light source, the photosensitive agent in the ink sprayed on the surface of the battery cell undergoes a chemical reaction, causing the ink to quickly change from a liquid state to a solid state.

[0055] The battery cell UV coating equipment proposed in this application uses UV ink to coat the surface of the battery cell 40, thereby achieving insulation treatment on the surface of the battery cell 40. Compared with the existing coating method, it has the advantages of simple process and high working efficiency. At the same time, the battery cell UV coating equipment is configured to include a first coating device 10, a second coating device 20 and a transfer mechanism 30, which divides the entire battery cell 40 coating process into two independent coating steps. The two coating steps are controlled separately, which has the advantages of easy implementation, easy control, high production efficiency, improved product quality and good flexibility.

[0056] In one implementation, the first conveyor line 11 and the second conveyor line 21 are along a first direction ( Figure 1 The X-direction intervals are arranged, and both the first conveyor line 11 and the second conveyor line 21 are "U"-shaped annular conveyor lines.

[0057] It can be seen that by setting the first conveyor line 11 and the second conveyor line 21 as a “U”-shaped annular conveyor line arranged at intervals along the first direction, a first conveyor line 11 and a second conveyor line 21 with high conveying efficiency, small space occupation and reasonable layout is provided.

[0058] In one embodiment, the first conveyor line 11 and the second conveyor line 21 are arranged in parallel and spaced apart and extend along a first direction, and the conveying directions of the first conveyor line 11 and the second conveyor line 21 are opposite; or, the conveying directions of the first conveyor line 11 and the second conveyor line 21 are the same and collinear.

[0059] It can be seen that by setting the first conveyor line 11 and the second conveyor line 21 to extend along the first direction and be arranged in parallel, and by making the conveying directions of the first conveyor line 11 and the second conveyor line 21 opposite, the overall length of the spraying equipment in the first direction is shortened, making it suitable for installation environments with shorter lengths in the first direction; by setting the first conveyor line 11 and the second conveyor line 21 to have the same conveying direction and be collinear, the spraying equipment is adapted to slender installation environments.

[0060] Alternatively, the first conveyor line 11 and the second conveyor line 21 can also be arranged in a direction perpendicular to the first direction, which shortens the footprint of the first conveyor line 11 and the second conveyor line 21 in the first direction and increases the footprint of the first conveyor line 11 and the second conveyor line 21 in the direction perpendicular to the first direction, thus adapting to narrow, long, thick and wide installation environments.

[0061] Please see Figure 1 , Figures 3 to 5As shown, in one embodiment, the length direction of the battery cell 40 on the first conveyor line 11 is perpendicular to the conveying direction of the first conveyor line 11, and the length direction of the battery cell 40 on the second conveyor line 21 is the same as the conveying direction of the second conveyor line 21. The transfer mechanism 30 includes a transfer component 31 and at least one set of flipping components 32. The drive end of the transfer component 31 is connected to at least one set of flipping components 32. The transfer component 31 is configured to drive the flipping components 32 to slide and move up and down along a first direction. The flipping component 32 includes a flipping drive member 320 and a V-shaped connecting member. The connector 321 and the cell gripper 322 are mounted on the drive end of the transfer assembly 31. The drive end of the flip drive 320 is connected to the first end of the connector 321. The cell gripper 322 is mounted on the second end of the connector 321. The cell gripper 322 is configured to grip or release a cell 40. The flip drive 320 is configured to drive the connector 321 to rotate by a preset angle, thereby rotating the cell gripper 322 so that the cell 40 gripped by the cell gripper 322 is horizontally reversed by 90° and flipped so that its lower surface faces upward.

[0062] Specifically, the transfer assembly 31 includes a transverse linear module 310, a transverse base 311, a lifting linear module 312, and a lifting base 313. The drive end of the transverse linear module 310 is connected to the transverse base 311, and the transverse linear module 310 is configured to drive the transverse base 311 to reciprocate along a first direction. The lifting linear module 312 is vertically mounted on the transverse base 311, and the drive end of the lifting linear module 312 is connected to the lifting base 313. The lifting linear module 312 is configured to drive the lifting base 313 to lift. At least one set of flipping assembly 32 is mounted on the lifting base 313.

[0063] Specifically, a sliding guide pair consisting of a linear guide rail and a slider is provided between the lifting seat 313 and the transverse seat 311 to ensure the smooth lifting of the lifting seat 313.

[0064] Specifically, the horizontal linear module 310 and the lifting linear module 312 are both electric cylinders, and the tilting drive 320 is a rotary cylinder.

[0065] Specifically, two sets of flipping components 32 are provided, and the two sets of flipping components 32 are installed at intervals on the lifting base 313 to realize the picking up of two battery cells 40 each time and the flipping operation of the picked-up battery cells 40.

[0066] As can be seen, the transfer component 31 drives the flipping component 32 to slide and descend along the first direction towards the first conveyor line 11, so as to clamp the battery cell 40 with its upper surface facing up on the first unloading station 113 by the battery cell gripper 322; the transfer component 31 drives the flipping component 32 to slide and descend along the first direction towards the second conveyor line 21, so as to release the battery cell 40 after being flipped and reversed by the flipping component 32 onto the second conveyor line 21. This realizes the automatic transfer of the battery cell 40 after spraying on the first conveyor line 11 to the second conveyor line 21. At the same time, the flipping component 32 can flip and horizontally reverse the battery cell 40 by 90° while the battery cell 40 is being transferred, so that the lower surface of the battery cell 40 faces up and the length direction of the battery cell is the same as the conveying direction of the second conveyor line 21. This facilitates the subsequent spraying of the lower surface and the two opposite sides of the length direction of the battery cell 40, thereby improving the spraying efficiency of the battery cell.

[0067] Please see Figure 2 and Figure 6 As shown, in one embodiment, the first spraying mechanism 13 includes a first spraying component 130 and a second spraying component 131. The first spraying component 130 is disposed above the first spraying station 111 and is configured to spray an insulating coating onto the upper surface of the battery cell 40. The second spraying component 131 is disposed on both sides of the first spraying station 111 and is configured to spray an insulating coating onto the two sides of the battery cell 40 in the width direction. The second spraying mechanism 23 includes a third spraying component 230 and a fourth spraying component 231. The third spraying component 230 is disposed above the second spraying station 212 and is configured to spray an insulating coating onto the lower surface of the battery cell 40. The fourth spraying component 231 is disposed on both sides of the second spraying station 212 and is configured to spray an insulating coating onto the two sides of the battery cell 40 in the length direction.

[0068] Specifically, the first spraying component 130, the second spraying component 131, the third spraying component 230 and the fourth spraying component 231 all adopt a UV spraying system, which sprays UV ink evenly onto the surface of the battery cell 40 through the nozzle.

[0069] As can be seen, by spraying an insulating coating onto the upper surface of the battery cell 40 with the first spraying component 130 and spraying an insulating coating onto the two sides of the battery cell 40 in the width direction with the second spraying component 131, the step-by-step spraying of the upper surface and the two opposite sides in the width direction of the battery cell 40 is achieved, providing a first spraying mechanism 13 that is easy to control and has high spraying efficiency; by spraying an insulating coating onto the lower surface of the battery cell 40 with the third spraying component 230 and spraying an insulating coating onto the two sides of the battery cell 40 in the length direction with the fourth spraying component 231, the step-by-step spraying of the lower surface and the two opposite sides in the length direction of the battery cell 40 is achieved, providing a second spraying mechanism 23 that is easy to control and has high spraying efficiency.

[0070] In one embodiment, the first spraying device 10 further includes a first visual inspection mechanism 15, which is disposed between the first cleaning mechanism 12 and the first spraying mechanism 13. The first visual inspection mechanism 15 is configured to perform visual inspection on the battery cell 40 after it has been cleaned by the first cleaning mechanism 12. The second spraying device 20 further includes a second visual inspection mechanism 25, which is disposed between the second cleaning mechanism 22 and the second spraying mechanism 23. The second visual inspection mechanism 25 is configured to perform visual inspection on the battery cell 40 after it has been cleaned by the second cleaning mechanism 22.

[0071] As can be seen, through the first visual inspection mechanism 15 and the second visual inspection mechanism 25, the first spraying mechanism 13 and the second spraying mechanism 23 can perform visual inspection on the battery cell 40 before spraying it, so as to locate the battery cell 40 and enable the first spraying mechanism 13 and the second spraying mechanism 23 to accurately spray the battery cell 40, which is beneficial to improving the spraying effect of the battery cell.

[0072] In one embodiment, the first spraying device 10 further includes a first film thickness detection mechanism 16, which is disposed after the first curing mechanism 14 and is configured to detect the thickness of the UV insulating coating on the surface of the battery cell 40 after curing by the first curing mechanism 14; the second spraying device 20 further includes a second film thickness detection mechanism 26, which is disposed after the second curing mechanism 24 and is configured to detect the thickness of the UV insulating coating on the surface of the battery cell 40 after curing by the second curing mechanism 24.

[0073] As can be seen, by using the first film thickness detection mechanism 16 and the second film thickness detection mechanism 26, online thickness detection of the UV insulation coating of the battery cell 40 after spraying by the first spraying mechanism 13 and the second spraying mechanism 23 is realized, which ensures the spraying quality of the spraying equipment and improves the processing efficiency of the battery cell 40.

[0074] In one embodiment, the first coating device 10 further includes a first transport mechanism 17 and a first NG conveyor line 18. The first transport mechanism 17 is located after the first unloading station 113. The first transport mechanism 17 is connected to the first conveyor line 11 and the first NG conveyor line 18. The first transport mechanism 17 is configured to pick up the battery cells 40 that fail the inspection by the first visual inspection mechanism 15 or the first film thickness inspection mechanism 16 on the first conveyor line 11 and release the picked-up battery cells 40 to the first NG conveyor line 18. The second coating device 20 further includes a second transport mechanism 27 and a second NG conveyor line 28. The second transport mechanism 27 is located after the second unloading station 214. The second transport mechanism 27 is connected to the second conveyor line 21 and the second NG conveyor line 28. The second transport mechanism 27 is configured to pick up the battery cells 40 that fail the inspection by the second visual inspection mechanism 25 or the second film thickness inspection mechanism 26 on the second conveyor line 21 and release the picked-up battery cells 40 to the second NG conveyor line 28.

[0075] It can be seen that, through the cooperation of the first conveying mechanism 17 and the first NG conveying line 18, the unqualified battery cells 40 on the first conveying line 11 are automatically unloaded; through the cooperation of the second conveying mechanism 27 and the second NG conveying line 28, the unqualified battery cells 40 on the second conveying line 21 are automatically unloaded; thus further improving the coating efficiency of the battery cells 40.

[0076] In one embodiment, the first spraying device 10 further includes a loading and conveying mechanism 19, which is configured to pick up the battery cell 40 to be sprayed and transport the picked-up battery cell 40 to the first loading station 114 of the first conveyor line 11; the second spraying device 20 further includes an unloading and conveying mechanism 29, which is configured to pick up the sprayed battery cell 40 at the second unloading station 214 and transport the picked-up battery cell 40 to the next process.

[0077] As can be seen, by setting up the feeding and conveying mechanism 19, the battery cell 40 to be sprayed is automatically transported to the first conveyor line 11; by setting up the unloading and conveying mechanism 29, the battery cell 40 after spraying is automatically unloaded, further improving the spraying efficiency of the battery cell.

[0078] Please see Figure 1 and Figure 7As shown, in one embodiment, the first conveyor line 11 and the second conveyor line 21 have the same structure. The first conveyor line 11 includes a magnetic levitation conveyor line 115 and several cell jigs (not shown in the figure). The magnetic levitation conveyor line 115 includes a stator 1150, several movers 1151, and auxiliary support members 1152. The stator 1150 is generally U-shaped, with convex arc-shaped corners. The movers 1151 are horizontally slidably mounted on the stator 1150. The magnetic levitation conveyor line 1151 is connected to the stator 1150 via coils and... The magnetic stripe of the mover 1151 drives the mover 1151 to slide horizontally; the auxiliary support 1152 is set at the lower end of the stator 1150 and is arranged along the circumference of the stator 1150. The lower end of the mover 1151 is provided with a guide wheel set 1153, which is embedded in the auxiliary support 1152 and can slide along the length of the auxiliary support 1152; the cell fixture is installed on the mover 1151 and is configured to carry and position the cell 40.

[0079] Specifically, the auxiliary support 1152 is a track arranged circumferentially along the stator 1150.

[0080] It can be seen that by setting both the first conveyor line 11 and the second conveyor line 21 to include a magnetic levitation conveyor line 115 and several battery cell fixtures, each battery cell fixture can move independently, and each processing station can be configured with a corresponding number of battery cell fixtures according to the actual production efficiency, which facilitates the control of battery cell spraying. It has the advantages of high conveying efficiency, high conveying accuracy, strong flexibility and wide applicability.

[0081] The general working process of the UV coating equipment for battery cells proposed in this application is as follows:

[0082] S1, the first conveyor line 11 conveys the battery cell 40 to be sprayed to the first cleaning station 110, and the first cleaning mechanism 12 cleans the surface of the battery cell 40 at the first cleaning station 110 to remove dirt and impurities from the surface of the battery cell 40.

[0083] S2, the first conveyor line 11 conveys the battery cell 40 after it has been cleaned by the first cleaning mechanism 12 to the first visual inspection mechanism 15, and performs visual inspection on the battery cell 40 by the first visual inspection mechanism 15.

[0084] S3, the first conveyor line 11 conveys the visually inspected battery cell 40 to the first spraying station 111, the first spraying component 130 sprays an insulating coating on the upper surface of the qualified battery cell 40, and the second spraying component 131 sprays an insulating coating on the two sides of the qualified battery cell 40 in the width direction.

[0085] S4, the first conveyor line 11 conveys the sprayed battery cell 40 to the first curing station 112, and the first curing mechanism 14 cures the UV insulating coating on the upper surface and two opposite sides of the battery cell 40 at the first curing station 112.

[0086] S5, the first conveyor line 11 conveys the cured battery cell 40 to the first film thickness detection mechanism 16, and the first film thickness detection mechanism 16 detects the thickness of the cured UV insulation coating on the battery cell 40.

[0087] S6, the first conveyor line 11 conveys the battery cell 40 for which thickness detection is performed to the first unloading station 113;

[0088] S7, the transfer mechanism 30 picks up the battery cell 40 at the first unloading station 113 and flips the picked-up battery cell 40 horizontally by 90° and then releases it to the second loading station 210 with the lower surface facing up.

[0089] S8, the second conveyor line 21 conveys the battery cell 40 on the second loading station 210 to the second cleaning station 211, and the second cleaning mechanism 22 cleans the surface of the battery cell 40 at the second cleaning station 211 to remove dirt and impurities from the surface of the battery cell 40.

[0090] S9, the second conveyor line 21 conveys the battery cell 40, which has been cleaned by the second cleaning mechanism 22, to the second visual inspection mechanism 25, and performs visual inspection on the battery cell 40 through the second visual inspection mechanism 25.

[0091] S10, the second conveyor line 21 conveys the visually inspected battery cell 40 to the second spraying station 212, the third spraying component 230 sprays an insulating coating on the lower surface of the qualified battery cell 40, and the fourth spraying component 231 sprays an insulating coating on the two sides of the qualified battery cell 40 along its length.

[0092] S11, the second conveyor line 21 conveys the sprayed battery cell 40 to the second curing station 213, and the second curing mechanism 24 cures the UV insulating coating on the lower surface and two opposite sides of the battery cell 40 at the second curing station 213.

[0093] S12, the second conveyor line 21 conveys the cured battery cell 40 to the second film thickness detection mechanism 26, and the second film thickness detection mechanism 26 performs thickness detection on the cured UV insulation coating on the battery cell 40.

[0094] S13, the second conveyor line 21 transports the battery cell 40 after thickness detection to the second unloading station 214, and the unloading and handling mechanism 29 unloads the battery cell on the second unloading station 214.

[0095] The UV coating equipment for battery cells proposed in this application has the following advantages:

[0096] 1) By adopting the method of spraying UV ink on the surface of the battery cell, the insulation treatment of the battery cell surface is realized, with simple process and high working efficiency;

[0097] 2) The whole battery cell spraying process is divided into two independent spraying processes, and the two spraying processes are controlled separately, which is easy to implement, convenient to control, with high production efficiency and good flexibility;

[0098] 3) The first conveyor line and the second conveyor line are arranged at intervals along the first direction, and both adopt the "square" - shaped loop conveyor line, with high conveying efficiency, small occupied space and reasonable layout;

[0099] 4) Both the first spraying device and the second spraying head device have the functions of cleaning before spraying and thickness detection after spraying, ensuring the spraying quality of the battery cell;

[0100] 5) Both the first spraying device and the second spraying head device have the function of automatically discharging unqualified battery cells, with high automation degree;

[0101] 6) Both the first conveyor line and the second conveyor line adopt the conveying method of magnetic levitation conveyor line配合若干个电芯治具的输送方式,使得各个电芯治具能够单独移动,各个处理工位能够根据实际生产效率配置对应个数的电芯治具,便于对电芯喷涂的控制。(There is an error in the original Chinese text here. Assuming it should be "cooperating with the conveying method of several battery cell fixtures", then the translation is) 6) Both the first conveyor line and the second conveyor line adopt the conveying method of magnetic levitation conveyor line cooperating with several battery cell fixtures, enabling each battery cell fixture to move independently, and each processing station can configure the corresponding number of battery cell fixtures according to the actual production efficiency, which is convenient for controlling the spraying of battery cells.

[0102] The above embodiments only illustrate the basic principles and characteristics of the present application. The present application is not limited by the above examples. Without departing from the spirit and scope of the present application, there are various changes and alterations to the present application, and these changes and alterations all fall within the scope of the present application claimed. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. An electric cell uv spray painting apparatus, characterized by, The battery cell UV coating equipment includes a first coating device, a second coating device, and a transfer mechanism, wherein: The first spraying device includes a first conveyor line, a first cleaning mechanism, a first spraying mechanism, and a first curing mechanism. The first conveyor line is configured to sequentially convey the battery cell to a first cleaning station, a first spraying station, a first curing station, and a first unloading station. The first cleaning mechanism is configured to clean the surface of the battery cell at the first cleaning station. The first spraying mechanism is configured to spray a UV insulating coating onto the upper surface and two opposite sides of the battery cell at the first spraying station. The first curing mechanism is configured to cure the UV insulating coating on the upper surface and two opposite sides of the battery cell at the first curing station. The transfer mechanism connects to the first conveyor line and the second conveyor line. The transfer mechanism is configured to flip the battery cell at the first unloading station of the first conveyor line and transfer it to the second conveyor line so that the lower surface of the battery cell and the other two opposite sides are easy to process. The second spraying device includes a second conveyor line, a second cleaning mechanism, a second spraying mechanism, and a second curing mechanism. The second conveyor line is configured to sequentially transport the received battery cells to a second cleaning station, a second spraying station, a second curing station, and a second unloading station. The second cleaning mechanism is configured to clean the surface of the battery cells at the second cleaning station. The second spraying mechanism is configured to spray a UV insulating coating onto the lower surface and two other opposite sides of the battery cells at the second spraying station. The second curing mechanism is configured to cure the UV insulating coating on the lower surface and two other opposite sides of the battery cells at the second curing station.

2. The cell uv spray apparatus of claim 1, wherein: The first conveyor line and the second conveyor line are arranged at intervals along a first direction, and both the first conveyor line and the second conveyor line are "U"-shaped annular conveyor lines.

3. The cell uv spray apparatus of claim 1, wherein: The first conveyor line and the second conveyor line are arranged in parallel and spaced apart and extend along a first direction, and the conveying directions of the first conveyor line and the second conveyor line are opposite; or, The first conveyor line and the second conveyor line have the same conveying direction and are collinear.

4. The battery cell UV spraying equipment according to claim 1, characterized in that: The length direction of the battery cell on the first conveyor line is perpendicular to the conveying direction of the first conveyor line, and the length direction of the battery cell on the second conveyor line is the same as the conveying direction of the second conveyor line. The transfer mechanism includes a transfer component and at least one set of flipping components, wherein: The drive end of the transfer component is connected to the at least one set of flipping components, and the transfer component is configured to drive the flipping component to slide and move up and down along a first direction; The flipping assembly includes a flipping drive, a V-shaped connector, and a cell gripper. The flipping drive is installed on the drive end of the transfer assembly. The drive end of the flipping drive is connected to the first end of the connector. The cell gripper is installed on the second end of the connector. The cell gripper is configured to grip or release one of the cells. The flipping drive is configured to drive the connector to rotate by a preset angle, thereby causing the cell gripper to rotate, so that the cell gripped by the cell gripper is horizontally reversed by 90° and flipped so that its lower surface faces upward.

5. The cell uv spray apparatus of claim 4, wherein: The first spraying mechanism includes a first spraying component and a second spraying component. The first spraying component is disposed above the first spraying station and is configured to spray an insulating coating onto the upper surface of the battery cell. The second spraying component is disposed on both sides of the first spraying station and is configured to spray an insulating coating onto the two sides of the battery cell in the width direction. The second spraying mechanism includes a third spraying component and a fourth spraying component. The third spraying component is disposed above the second spraying station and is configured to spray an insulating coating onto the lower surface of the battery cell. The fourth spraying component is disposed on both sides of the second spraying station and is configured to spray an insulating coating onto the two sides of the battery cell along its length.

6. The cell uv spray apparatus of claim 1, wherein: The first spraying device further includes a first visual inspection mechanism, which is disposed between the first cleaning mechanism and the first spraying mechanism. The first visual inspection mechanism is configured to perform visual inspection on the battery cells after they have been cleaned by the first cleaning mechanism. The second spraying device further includes a second visual inspection mechanism, which is disposed between the second cleaning mechanism and the second spraying mechanism. The second visual inspection mechanism is configured to perform visual inspection on the battery cells after they have been cleaned by the second cleaning mechanism.

7. The cell uv spray apparatus of claim 6, wherein: The first coating device further includes a first film thickness detection mechanism, which is located after the first curing mechanism. The first film thickness detection mechanism is configured to detect the thickness of the UV insulating coating on the surface of the battery cell after curing by the first curing mechanism. The second coating device further includes a second film thickness detection mechanism, which is located after the second curing mechanism. The second film thickness detection mechanism is configured to detect the thickness of the UV insulating coating on the surface of the battery cell after it has been cured by the second curing mechanism.

8. The cell uv spray apparatus of claim 7, wherein: The first coating device further includes a first conveying mechanism and a first NG conveyor line. The first conveying mechanism is located after the first unloading station. The first conveying mechanism connects to the first conveyor line and the first NG conveyor line. The first conveying mechanism is configured to pick up the battery cells that fail the inspection by the first visual inspection mechanism or the first film thickness inspection mechanism on the first conveyor line and release the picked-up battery cells to the first NG conveyor line. The second coating device further includes a second transport mechanism and a second NG conveyor line. The second transport mechanism is located after the second unloading station. The second transport mechanism connects to the second conveyor line and the second NG conveyor line. The second transport mechanism is configured to pick up the battery cells that fail the inspection by the second vision inspection mechanism or the second film thickness inspection mechanism on the second conveyor line and release the picked-up battery cells to the second NG conveyor line.

9. The electric cell uv spray device of claim 1, wherein: The first spraying device further includes a loading and conveying mechanism, which is configured to pick up the battery cell to be sprayed and transport the picked-up battery cell to the first loading station of the first conveyor line; The second spraying device further includes a blanking handling mechanism, which is configured to pick up the sprayed completed battery cells at the second blanking station and transport the picked-up battery cells to the next process.

10. The electric cell uv spray apparatus of claim 2, wherein: The first conveyor line and the second conveyor line have the same structure. The first conveyor line includes a maglev conveyor line and a plurality of battery cell fixtures, where: The maglev conveyor line includes a stator, a plurality of rotors and auxiliary supports. The stator is integrally in an "open" shape, and the corners of the stator are convex arc-shaped. The rotors are horizontally slidably mounted on the stator, and the corresponding rotors are driven to horizontally slide through the cooperation of the coils of the stator and the magnetic strips of the rotors; The auxiliary supports are arranged at the lower end of the stator. The auxiliary supports are arranged along the circumference of the stator. A guide wheel set is arranged at the lower end of the rotor, and the guide wheel set is clamped on the auxiliary supports, and the guide wheel set can slide along the length direction of the auxiliary supports; The battery cell fixtures are mounted on the rotors, and the battery cell fixtures are configured to carry and position the battery cells.

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