An automatic welding mechanism and an automatic assembly and welding production line

Abstract

The present invention relates to the technical field of battery manufacturing, and particularly relates to an automatic welding mechanism and an automatic assembly and welding production line, which includes a frame; a first workbench rotatably connected to the frame, and a plurality of first bearing plates are fixedly arranged on the edge of the first workbench, and the first bearing plates are arrayed on the edge of the first workbench; a first welding assembly, including a first welding piece and a plurality of first pressing pieces, the first welding piece is slidably connected to the frame in the vertical direction, the output end of the first welding piece is perpendicular to the rotation path of the first bearing plate, and the plurality of first pressing pieces surround the output end of the first welding piece and are slidably connected to the frame for pressing the bus bar and the cover plate tightly, and the first welding piece welds the bus bar and the cover plate located on the first bearing plate. This application ensures that the bus bar and the cover plate are in close contact and fit tightly, preventing problems such as false soldering and uneven fusion depth caused by gaps or offsets, and ensuring uniform weld seams.

Description

Technical Field

[0001] The present invention relates to the technical field of battery manufacturing, and particularly relates to an automatic welding mechanism and an automatic assembly and welding production line. Background Art

[0002] In batteries (especially lithium-ion batteries, power batteries, etc.), the cover plate assembly is one of the key components in the battery structure, mainly responsible for functions such as sealing the battery interior, providing electrical connection, and safety protection. The cover plate assembly includes a cover plate, a current collector plate, and an explosion-proof sheet. Specifically, the current collector plate includes a strip-shaped tab and a disk-shaped body. The tab is fixed to the body, the tab of the current collector plate is welded to the cover plate, and the explosion-proof sheet is welded to the cover plate.

[0003] There is a prior art cover plate assembly, its processing method and battery (CN116722278A), which includes a cover plate and a current collector plate and assembles and welds the two into a cover plate assembly. Due to the insufficient positioning accuracy of the cover plate and the current collector plate, it is easy to cause welding alignment deviation, which in turn affects the quality and consistency of the welding joint. The relative position between the current collector plate and the cover plate is offset, resulting in problems such as uneven welding penetration, false welding, or welding through, reducing the mechanical strength and sealing performance of the cover plate assembly and increasing potential safety hazards. Summary of the Invention

[0004] The object of the present invention is to provide an automatic welding mechanism and an automatic assembly and welding production line to solve the problem of low positioning accuracy of the cover plate and the current collector plate in the prior art.

[0005] The technical solution of the present invention is: an automatic welding mechanism, comprising: a frame; a first workbench rotatably connected to the frame, a plurality of first carrier plates fixedly provided at the edge of the first workbench, and the first carrier plates are arrayed at the edge of the first workbench; a first feeding component fixedly provided on the frame, the first feeding component having multiple degrees of freedom and being used for conveying a cover plate onto the first carrier plate; a second feeding component fixedly provided on the frame, the second feeding component having multiple degrees of freedom, and the first carrier plate successively conveys a current collector plate onto the cover plate on the first carrier plate through the first feeding component and the second feeding component for assembly; a first welding component, including a first welding piece and several first pressing components, the first welding piece is slidably connected to the frame in the vertical direction, the output end of the first welding piece is perpendicular to the rotation path of the first carrier plate, and several first pressing components surround the output end of the first welding piece and are used for pressing the current collector plate and the cover plate tightly, and the first welding piece welds the current collector plate and the cover plate located on the first carrier plate; a carrier 164 is slidably connected to the frame 11 in the vertical direction, the carrier 164 is provided with a through hole 165 penetrating in the vertical direction, several welding claws 166 are fixedly provided in the carrier 164, and several welding claws 166 extend towards the central axis of the through hole 165. The first pressing component 163 is slidably connected in the through hole 165, a part of the first pressing component 163 is located in the carrier 164, a part of the first pressing component 163 extends downward out of the carrier 164, and the first pressing component 163 is elastically slidably connected to the carrier 164 through a spring. The carrier 164 and the welding claws 166 enclose an area for the first welding piece 162 to weld.

[0006] Preferably, the first carrier plate is provided with a current collector plate positioning pin, a cover plate positioning pin and a limiting groove arranged along the radial direction of the first workbench. The current collector plate positioning pin and the cover plate positioning pin are respectively located at both ends of the limiting groove. The current collector plate positioning pin is used for restricting the plate body of the current collector plate, the cover plate positioning pin is used for restricting the cover plate, and the side wall of the limiting groove is used for restricting the tabs of the current collector plate; the frame is provided with a locking component, the locking component faces the first carrier plate at the bottom of the first welding component close to or away from it in the vertical direction, the output end of the locking component is configured to surround the current collector plate positioning pin, and the locking component presses the current collector plate onto the first carrier plate.

[0007] The present application also provides an automatic assembly and welding production line, including an automatic welding mechanism, and further including a coding device for coding the current collector plate to be entered into the welding process and an electrical performance detection device. The output position of the coding device is connected to the feeding position of the second feeding component, the frame is provided with a first qualified product conveyor belt, and the input end of the electrical performance detection device is connected to the output end of the first qualified product conveyor belt.

[0008] Preferably, the coding device includes a second workbench rotatably connected to the frame. A plurality of second bearing plates are fixedly arranged on the edge of the second workbench and are distributed in a circumferential array. A second moving member moving in the vertical direction is fixedly arranged on the frame on the circumferential side of the second workbench. The output end of the second moving member is fixedly provided with a laser coder and a flattening member. The flattening member is configured into a hollow cylindrical structure for pressing the edge of the disk body. The laser coder is located inside the flattening member for coding the disk body.

[0009] Preferably, the electrical property detection device includes a third workbench rotatably connected to the frame. A plurality of third bearing plates for carrying products are fixedly arranged on the outer edge of the third workbench. A handling assembly, an insulation detection assembly, and a resistance detection assembly are arranged on the outer circumferential side of the third workbench. The handling assembly is used for transporting the product onto the third bearing plate. The third workbench rotates successively through the insulation detection assembly and the resistance detection assembly.

[0010] Preferably, an explosion-proof sheet assembly and welding device is arranged at the input end of the automatic welding mechanism. The explosion-proof sheet assembly and welding device includes a fourth workbench for carrying a cover plate and an explosion-proof sheet composition. The fourth workbench is rotatably connected to the frame. The frame is fixedly provided with a second welding assembly for welding the cover plate and the explosion-proof sheet.

[0011] Preferably, a fourth conveying assembly, a film feeding feeder, and a film picking and placing assembly are fixedly arranged on the frame at the output end of the automatic welding mechanism. The fourth conveying assembly is used for transporting the product after welding. The film feeding feeder is rotatably connected to the frame. The film picking and placing assembly has multiple degrees of freedom to attach the film on the film feeding feeder to the product.

[0012] Preferably, the film picking and placing assembly includes a carrying platform and a film attaching member both fixedly arranged on the frame. The top of the carrying platform is recessed to form a channel for the rolled film to pass through. A pair of pressing plates are fixedly arranged in the channel. The pressing plates are fixedly arranged on the side walls of the channel along the length direction of the channel. A gap for the rolled film to pass through is left between the pressing plates and the bottom of the channel. The film attaching member with three degrees of freedom moves between the carrying platform and the fourth conveying assembly to remove the film attached to the rolled film and attach it to the product.

[0013] Preferably, the frame is fixedly provided with a film cleaning platform within the traveling range of the film attaching member. When the film at the end of the film attaching member is not attached to the product, the film attaching member moves to the film cleaning platform to attach the film to the film cleaning platform.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] A number of first pressing components surround the welding head. Before welding, the busbar and the cover plate are pressed tightly to ensure close fitting between the two, preventing problems such as poor welding and uneven fusion depth caused by gaps or offsets. The first pressing components continuously apply pressure during the welding process to keep the busbar and the cover plate in close contact, further ensuring uniform weld seams, improving the mechanical strength and sealing performance of the welded joint. The output end of the first welding component is perpendicular to the rotation path of the first carrier plate, ensuring that the welding head always welds along a fixed direction, avoiding welding deviation or penetration caused by angle deviation, while improving production efficiency and product consistency, and enhancing the safety and reliability of the lithium battery. Brief Description of the Drawings

[0016] The present invention will be further described below in conjunction with the drawings and embodiments:

[0017] Figure 1 It is a schematic structural diagram of an automatic welding mechanism according to the present invention;

[0018] Figure 2 It is a schematic structural diagram of the first carrier plate according to the present invention;

[0019] Figure 3 It is a schematic structural diagram of the first feeding assembly according to the present invention;

[0020] Figure 4 It is a schematic structural diagram of the second feeding assembly according to the present invention;

[0021] Figure 5 It is a schematic structural diagram of the first welding assembly according to the present invention;

[0022] Figure 6 It is a top view of the carrier according to the present invention;

[0023] Figure 7 It is a schematic structural diagram of the locking assembly according to the present invention;

[0024] Figure 8 It is a schematic structural diagram of an automatic assembly and welding production line according to the present invention;

[0025] Figure 9 It is a schematic structural diagram of the coding device according to the present invention;

[0026] Figure 10 It is a schematic structural diagram of the electrical performance detection device according to the present invention;

[0027] Figure 11 It is a schematic structural diagram of the explosion-proof film assembly and welding device according to the present invention;

[0028] Figure 12 It is a schematic structural diagram of the film pasting device according to the present invention;

[0029] Figure 13This is a schematic structural diagram of the film picking and placing assembly of the present invention.

[0030] Description of reference numerals:

[0031] 1. Automatic welding mechanism; 11. Frame; 12. First workbench; 13. First carrier plate; 131. Busbar positioning pin; 132. Cover plate positioning pin; 133. Limit groove; 14. First feeding assembly; 141. First positioning member; 1411. First fixing part; 1412. First rotating part; 1413. First clamping part; 142. First transfer member; 1421. First moving part; 1422. First adsorption end; 15. Second feeding assembly; 151. Second transfer member; 152. Second adsorption end; 16. First welding assembly; 161. First moving member; 162. First welding part; 163. First pressing part; 164. Carrier member; 165. Through hole; 166. Welding claw; 17. Locking assembly; 171. Locking ring; 172. Locking plate; 181. First vision detection assembly; 182. Second vision detection assembly; 19. First conveying assembly; 191. First good product conveyor belt; 192. First blanking driving part; 193. First defective product conveyor belt; 2. Coding device; 21. Second workbench; 22. Second carrier plate; 23. Third feeding assembly; 231. Feeding tray; 232. First robotic arm; 24. Third vision detection assembly; 25. Fourth vision detection assembly; 26. Coding assembly; 261. Second moving member; 262. Laser coder; 263. Smoothing part; 27. Second conveying assembly; 271. Second good product conveyor belt; 272. Second blanking driving part; 273. Second defective product conveyor belt; 3. Electrical performance detection device; 31. Third workbench; 32. Handling assembly; 33. Resistance detection assembly; 34. Insulation detection assembly; 35. Third carrier plate; 4. Explosion-proof film assembly and welding equipment; 41. Fourth workbench; 42. Fourth carrier plate; 43. Fourth feeding assembly; 431. Flexible vibrating bowl; 432. Third moving member; 44. Fifth vision detection assembly; 45. Sixth vision detection assembly; 46. Second welding assembly; 47. Third conveying assembly; 5. Film sticking equipment; 51. Film feeding flyer; 52. Film picking and placing assembly; 521. Carrying platform; 522. Film sticking part; 523. Pressing plate; 53. Fourth conveying assembly; 531. Guide rail; 532. Carrying block; 54. Film cleaning platform; 100. Cover plate; 200. Busbar; 2001. Disk body; 2002. Ear; 300. Explosion-proof film; 400. Film; 500. Product. Detailed implementation manners

[0032] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0033] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0034] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. Embodiment 1

[0035] As Figure 1 shown, an automatic welding mechanism includes a frame 11 and a first workbench 12. The first workbench 12 is rotatably connected to the top of the frame 11 by a motor. A plurality of first bearing plates 13 are fixedly arranged at the edge of the first workbench 12 in an array. The first bearing plates 13 are used to carry the stacked cover plates 100 and current collecting plates 200. A first loading component 14, a second loading component 15 and a first welding component 16 are fixedly arranged on the frame 11 on the outer peripheral side of the first workbench 12 to automatically weld the cover plates 100 and current collecting plates 200 located on the first bearing plates 13 into one body.

[0036] As Figure 1 and Figure 2 shown, in this embodiment, there are eight first bearing plates 13, and the eight first bearing plates 13 are evenly distributed in a circle at the edge of the first workbench 12. Six operating stations corresponding to the first bearing plates 13 are arranged on the frame 11, successively including a first loading station, a second loading station, a first pre-welding inspection station, a first welding station, a first post-welding inspection station, an air-cooling station, a good product unloading station and a defective product unloading station. In other embodiments, the corresponding stations on the frame 11 can be increased or decreased according to the actual working conditions.

[0037] As Figure 2As shown in the figure, specifically, the first carrier plate 13 is provided with a busbar positioning pin 131, a cover plate positioning pin 132, and a limiting groove 133. The limiting groove 133 is arranged along the radial direction of the first workbench 12. The busbar positioning pin 131 and the cover plate positioning pin 132 are arranged at both ends of the limiting groove 133. Among them, the cover plate positioning pin 132 is located on the side of the limiting groove 133 away from the rotation center of the first workbench 12. When the cover plate 100 fits against the first carrier plate 13, the cover plate positioning pin 132 is inserted into the air leakage hole of the cover plate 100. The busbar positioning pin 131 is located on the side of the limiting groove 133 close to the rotation center of the first workbench 12. When the disc body 2001 fits against the first carrier plate 13, the busbar positioning pin 131 is inserted into the hole of the disc body 2001. At this time, the tab 2002 passes through the limiting groove 133 and the notch of the cover plate 100, and partially overlaps with the cover plate 100. The overlapping part is the welding area to be welded between the tab 2002 and the cover plate 100.

[0038] As Figure 3 shown in the figure, the first loading component 14 is fixedly arranged at the first loading station. The first loading component 14 includes a first positioning member 141 and a first transfer member 142. The first positioning member 141 includes a first fixing portion 1411, a first rotating portion 1412, and a first clamping portion 1413. The first fixing portion 1411 is fixedly arranged at the first loading station. The first rotating portion 1412 is rotatably connected to the first fixing portion 1411 with a vertical axis as the rotation axis. The top of the first rotating portion 1412 is configured as a plane for carrying the cover plate 100 to adjust the angle of the cover plate 100 so that the air leakage hole of the cover plate 100 can correspond to the corresponding limiting structure on the corresponding first carrier plate 13. The first clamping portion 1413 is slidably connected in pairs to the top of the first rotating portion 1412. The first clamping portion 1413 is used to clamp the outer surface of the cover plate 100 to accurately position the position of the cover plate 100.

[0039] The first transfer member 142 includes a first moving portion 1421 with vertical and horizontal movement and a first adsorption end 1422 for adsorbing the cover plate 100. The first moving portion 1421 is fixedly arranged at the first loading station. The horizontal movement direction of the first moving portion 1421 is along the radial direction of the first workbench 12. The first adsorption end 1422 is fixedly arranged at the output end of the first moving portion 1421. The first adsorption end 1422 transfers the cover plate 100 on the first positioning member 141 to the first carrier plate 13.

[0040] As Figure 4As shown, the second loading component 15 includes a second transfer member 151 and a second adsorption end 152. The second transfer member 151 is fixedly arranged at the second loading station. The second transfer member 151 has a translational degree of freedom along the radial direction of the first workbench 12 and a translational degree of freedom along the vertical direction. The second adsorption end 152 is fixedly arranged at the output end of the second transfer member 151 and is used to transfer the busbar tray 200 onto the first carrier plate 13, so that the busbar tray 200 is inserted into the busbar tray positioning pin 131, and the busbar tray 200 partially overlaps with the cover plate 100.

[0041] As Figure 1 As shown, a first vision detection component 181 is fixedly arranged at the first pre-welding detection station, and a second vision detection component 182 is fixedly arranged at the first post-welding detection station. In this embodiment, both the first vision detection component 181 and the second vision detection component 182 adopt vision modules, and the vision modules are arranged facing the first carrier plate 13 of the corresponding station. The first vision detection component 181 is used to detect the positioning accuracy of the cover plate 100 and the busbar tray 200, and the second vision detection component 182 is used to detect whether the welding structure of the cover plate 100 and the busbar tray 200 is a good product.

[0042] In this embodiment, the first vision detection component 181 is provided with a deviation correction component to finely adjust the positions of the cover plate 100 and the busbar tray 200 located at the pre-welding detection station to ensure the welding accuracy. Preferably, the deviation correction component is a pneumatic push rod.

[0043] The first welding component 16 is fixedly arranged at the first welding station. The first welding component 16 includes a first moving member 161 and a first welding member 162. The first moving member 161 has a translational degree of freedom along the vertical direction. That is, the first moving member 161 is slidably connected to the frame 11 along the vertical direction. The output end of the first moving member 161 faces the first carrier plate 13 located at the first welding station. That is, the output end of the first moving member 161 is vertically overlapped with the rotation path of the first carrier plate 13.

[0044] As Figure 5 and Figure 6As shown, the first welding station is provided with a carrier 164. The carrier 164 is slidably connected to the frame 11 in the vertical direction, and the rotation path of the carrier 164 is vertically overlapped with that of the first carrier plate 13. In this embodiment, the carrier 164 is configured in a cuboid structure. The carrier 164 is provided with a through hole 165 penetrating in the vertical direction, and a plurality of welding claws 166 protrude towards the central axis of the through hole 165. In the vertical direction, the welding claws 166 further define a region within the through hole 165. Preferably, the side surface of the welding claw 166 facing the center of the through hole 165 is configured as a plane in the vertical direction. More preferably, there are four welding claws 166, two in a pair. In the vertical direction, the four welding claws 166 enclose an approximately rectangular space, and there is a gap between two adjacent welding claws 166.

[0045] The bottom surface of the carrier 164 is a curved surface with a central protrusion and an upwardly curved outer peripheral side. The bottom of the welding claw 166 is a curved surface conforming to this curvature, so that the bottom of the welding claw 166 close to the center of the through hole 165 is the lowest point of the carrier 164. When the carrier 164 abuts against the busbar tray 200, the welding claw 166 is in approximate line contact with the busbar tray 200 to reduce the contact area between the welding claw 166 and the busbar tray 200.

[0046] The carrier 164 is internally provided with a plurality of first pressing members 163. The first pressing members 163 are slidably connected to the carrier in the vertical direction. A part of the first pressing members 163 is located inside the carrier 164, and a part of the first pressing members 163 extends downward out of the carrier 164. The first pressing members 163 are elastically slidably connected to the carrier 164 through springs.

[0047] In this embodiment, there are four groups of first pressing members 163. A first pressing member 163 is arranged between two adjacent welding claws 166. The first pressing member 163 and the welding claw 166 enclose a vertical channel for welding the first welded part 162.

[0048] As Figure 7As shown, the frame 11 is fixed with a locking assembly 17, which has a degree of freedom of translation in the vertical direction, and the locking assembly 17 approaches or moves away from the busbar 200 located on the first welding station in the vertical direction. The locking assembly 17 includes a locking ring 171 and a locking plate 172, and the locking ring 171 is configured as a hollow ring structure. The locking ring 171 is slidably connected to the frame 11. When the locking ring 171 presses the disc body 2001, the busbar positioning pin 131 is located in the middle of the locking ring 171, thereby ensuring that the disc body 2001 is tightly pressed against the first carrier plate 13, while avoiding interference between the busbar positioning pin 131 and the locking ring 171. The locking plate 172 is fixedly connected to the outer peripheral side of the locking ring 171, and extends along the radial direction of the first worktable 12 toward the rotation center direction away from the first worktable 12. The locking plate 172 is constructed into a horizontal plate structure. When the locking plate 172 abuts against the disk body 2001, the locking plate 172 abuts against the pole ear 2002, and the length of the locking plate 172 is less than the length of the pole ear 2002, that is, the length of the locking plate 172 extends to the entrance of the cover plate 100, and does not extend to the area to be welded between the pole ear 2002 and the cover plate 100.

[0049] In order to ensure high-precision welding between the busbar 200 and the cover plate 100, the locking assembly 17 and the first welding assembly 16 achieve precise positioning and stable welding through staged synergy. First, the hollow ring structure of the locking ring 171 presses the busbar 200 downward to make it fit tightly with the first carrier plate 13. At the same time, the hollow design avoids the busbar positioning pin 131 to ensure accurate center positioning of the disc body 2001; then, the locking plate 172 fixed on the outer peripheral side of the locking ring 171 presses the pole ear 2002 horizontally to eliminate the gap between the pole ear 2002 and the cover plate 100, but its length is designed to ensure that it does not cover the area to be welded. Subsequently, the first pressing parts 163 of the first welding assembly 16 are partially pre-pressed on the pole lug 2002 around the welding head under the buffering effect of the spring floating device. These pressing parts are first in contact with the pole lug 2002 because they are higher than the welding head, and the periphery of the welding area is evenly flattened by elastic pressure. The first moving part 161 drives the first welding part 162 to be pressed vertically down to a preset position, and precise welding is performed in the welding area without external interference. From the overall fixation of the disk 2001, the flattening of the pole lug 2002 area to the local pre-pressing of the welding point, the precise operation of the welding head is finally achieved, effectively avoiding the risk of offset caused by multi-force coupling. At the same time, the spring floating design and the space avoidance structure jointly compensate for the assembly tolerance of the parts to ensure a stable and reliable welding process.

[0050] The air cooling station is provided with a heat dissipation fan (not shown in the figure), and the heat dissipation fan is arranged toward the first supporting plate 13 on the air cooling station to cool down the welded product 500.

[0051] like Figure 1As shown in the figure, the frame 11 is provided with a first conveying component 19. The first conveying component 19 is close to the first good product discharging station and the first defective product discharging station. That is to say, the first good product discharging station and the first defective product discharging station share the first conveying component 19 to discharge the product 500. The first conveying component 19 includes a first good product conveyor belt 191, a first discharging driving part 192, and a first defective product conveyor belt 193. The first discharging driving part 192 has three mutually perpendicular translational degrees of freedom. The output end of the first discharging driving part 192 is an adsorption port, which adsorbs the good product 500 and moves it to the first good product conveyor belt 191, or adsorbs the defective product 500 and moves it to the first defective product conveyor belt 193.

[0052] As Figure 8 As shown in the figure, the present application further provides an automatic assembly and welding production line, which includes the above-mentioned automatic welding mechanism, and further includes a coding device 2 and an electrical performance detection device 3. The coding device 2 is connected to the second feeding component 15. The coding device 2 codes the busbar 200 and conveys the coded busbar 200 to the first welding device.

[0053] As Figure 9 As shown in the figure, the coding device 2 includes a second workbench 21. The second workbench 21 is rotatably connected to the frame 11. A plurality of second bearing plates 22 are provided on the outer peripheral side of the second workbench 21. The plurality of second bearing plates 22 are evenly distributed in a circumferential manner on the edge of the first workbench 12. In this embodiment, six operation stations corresponding to the second bearing plates 22 are provided on the frame 11, which successively include a third feeding station, a pre-coding inspection station, a coding station, a post-coding detection station, a second good product discharging station, and a second defective product discharging station.

[0054] At the third feeding station, the frame 11 is fixedly provided with a third feeding component 23. The third feeding component 23 includes a feeding tray 231 and a first robotic arm 232. The first robotic arm 232 is a five-axis robotic arm. The output end of the first robotic arm 232 has an adsorption port. The first robotic arm 232 adsorbs and transfers the workpiece to the second bearing plate 22 at the third feeding station.

[0055] A third vision detection component 24 is fixedly provided at the pre-coding inspection station, and a fourth vision detection component 25 is fixedly provided at the post-coding detection station. In this embodiment, both the third vision detection component 24 and the fourth vision detection component 25 adopt vision modules, and the vision modules are arranged facing the second bearing plate 22 at the corresponding station. The third vision detection component 24 is used to detect the positioning accuracy of the busbar 200, and the fourth vision detection component 25 is used to identify the number of the corresponding busbar 200 to accurately control the subsequent automated production.

[0056] The frame 11 of the coding station is fixedly provided with a coding assembly 26. The coding assembly 26 includes a second moving member 261 that moves in the vertical direction. The output end of the second moving member 261 is fixedly provided with a laser coder 262 and a flattening member 263. The flattening member 263 is configured as a hollow cylindrical structure, and the laser coder 262 is located inside the flattening member 263. The flattening member 263 presses the edge of the disk body 2001 to prevent the edge of the disk body 2001 from warping, so as to ensure the flatness of the disk body 2001. Then, the laser coder 262 codes the disk body 2001, that is, numbers the busbar tray 200.

[0057] The frame 11 is fixedly provided with a second conveying assembly 27. The second conveying assembly 27 is close to the second qualified product discharging station and the second defective product discharging station. That is, the second qualified product discharging station and the second defective product discharging station share the second conveying assembly 27 to discharge the product 500. The second conveying assembly 27 includes a second qualified product conveyor belt 271, a second discharging driving member 272, and a second defective product conveyor belt 273. The second discharging driving member 272 has three mutually perpendicular translational degrees of freedom. The output end of the second discharging driving member 272 is an adsorption port, which adsorbs the qualified product 500 and moves it to the second qualified product conveyor belt 271, and the second discharging driving member 272 adsorbs the defective product 500 and moves it to the second defective product conveyor belt 273. The input end of the second qualified product conveyor belt 271 is within the stroke range of the second conveying assembly 27, and the output end of the second qualified product conveyor belt 271 is within the stroke range of the second loading assembly 15, so as to convey the coded busbar tray 200 to the first workbench 12 and weld it to the cover plate 100.

[0058] As Figure 10 shown, the electrical performance testing device 3 includes a third workbench 31, a handling assembly 32, a resistance testing assembly 33, and an insulation testing assembly 34. The third workbench 31 is rotatably connected to the frame 11. The third workbench 31 is fixedly provided with a plurality of third bearing plates 35. The plurality of third bearing plates 35 are evenly fixed on the edge of the third workbench 31 for bearing the product 500. The handling assembly 32, the insulation testing assembly 34, and the resistance testing assembly 33 are sequentially distributed around the outer peripheral side of the third workbench 31. The handling assembly 32 is used to transfer the welded combination of the cover plate 100 and the busbar tray 200 to the third bearing plate 35. The welded combination of the cover plate 100 and the busbar tray 200 is the product 500. The product 500 passes through the insulation testing assembly 34 and the resistance testing assembly 33 in sequence to test the product 500, and finally transfers the tested product 500 to the next process. In this embodiment, the insulation testing assembly 34 is an insulation resistance tester, and in other embodiments, a withstand voltage tester can be used; in this embodiment, the resistance testing assembly 33 is a micro-ohmmeter, and in other embodiments, the resistance testing assembly 33 can be an automated resistance detector or an online resistance detector. Embodiment 2

[0059] As Figure 11 shown, the difference between this embodiment and Embodiment 1 is that an automatic assembly and welding production line further includes an explosion-proof sheet assembly and welding device 4, and the explosion-proof sheet assembly and welding device 4 is arranged before the welding process of the cover plate 100 and the busbar 200. The explosion-proof sheet assembly and welding device 4 welds the explosion-proof sheet 300 on the cover plate 100.

[0060] The explosion-proof sheet assembly and welding device 4 includes a fourth workbench 41, and the fourth workbench 41 is rotatably connected to the frame 11. A plurality of fourth bearing plates 42 are fixedly arranged on the fourth workbench 41, and the plurality of fourth bearing plates 42 are evenly distributed around the edge of the fourth workbench 41 for carrying the cover plate 100. In this embodiment, there are eight operation stations on the frame 11, which successively include a fourth loading station, a fifth loading station, a second pre-welding inspection station, a second welding station, a second post-welding inspection station, a third qualified product unloading station, and a third defective product unloading station.

[0061] Specifically, a second tray loading component is arranged at the fourth loading station for transporting the cover plate 100 to the fourth bearing plate 42 at the fourth loading station. A fourth loading component 43 is arranged at the fifth loading station. The fourth loading component 43 includes a flexible vibrating disk 431 and a third moving member 432. The flexible vibrating disk 431 is provided with a discharge table. An operator pours the explosion-proof sheet 300 into the flexible vibrating disk 431, and the flexible vibrating disk 431 transports the explosion-proof sheets 300 to the discharge table one by one. The third moving member 432 is a robotic arm with five degrees of freedom, and the output end of the third moving member 432 is an adsorption port. The third moving member 432 transports the explosion-proof sheets 300 located at the discharge port to the cover plate 100 at the fifth loading station one by one, so that the explosion-proof sheet 300 can be fitted to the corresponding holes on the cover plate 100.

[0062] A fifth vision detection component 44 is fixedly arranged at the second pre-welding inspection station, and a sixth vision detection component 45 is fixedly arranged at the second post-welding inspection station. Both the fifth vision detection component 44 and the sixth vision detection component 45 adopt vision modules, and the vision modules are arranged facing the fourth bearing plate 42 at the corresponding stations. The fifth vision detection component 44 is used to detect whether the explosion-proof sheet 300 is directly opposite the hole on the cover plate 100, and the sixth vision detection component 45 is used to detect whether the weld between the explosion-proof sheet 300 and the cover plate 100 is qualified.

[0063] A second welding component 46 is fixedly arranged at the second welding station. The second welding component 46 moves in the vertical direction to weld the explosion-proof sheet 300 and the cover plate 100 together. The specific structure is similar to that of the first welding component 16 and will not be described in detail here.

[0064] The frame 11 is provided with a third conveying component 47 for sorting the cover plates 100 that have completed welding and inspection. The qualified products are transported to the next process at the third qualified product discharging station, and the defective products are collected at the third defective product discharging station. The structure of the third conveying component 47 is similar to that of the second conveying component 27, and will not be elaborated here. Embodiment 3

[0065] As Figure 12 and Figure 13 shown, the difference between this embodiment and Embodiment 1 is that an automatic assembly and welding production line further includes a film sticking device 5. The film sticking device 5 is arranged after the welding process of the cover plate 100 and the bus bar 200. The film sticking device 5 includes a film feeding flyer 51 and a film picking and placing component 52. The film feeding flyer 51 is rotatably connected to the frame 11. The film picking and placing component 52 includes a bearing platform 521 and a film sticking part 522. The top of the bearing platform 521 is recessed into a channel, the bottom surface of the channel is a plane, and paired pressing plates 523 are arranged in the channel. The pressing plates 523 are fixed on the side walls of the channel along the length direction of the channel. A gap for the wound film carrying the film sticker 400 to pass through is left between the pressing plates 523 and the bottom of the channel. The film sticker 400 is a sheet-like structure with adhesiveness, which is attached to the surface of the wound film, while the surface of the wound film does not have adhesiveness.

[0066] The frame 11 is provided with a fourth conveying component 53. The difference between the fourth conveying component 53 and the first conveying component 19 is that the fourth conveying component 53 further includes a guide rail 531 and a bearing block 532. The bearing block 532 bears the product 500 that has completed welding, and the bearing block 532 slides along the length direction of the guide rail 531.

[0067] The film sticking part 522 has three translational degrees of freedom. The end of the film sticking part 522 is an adsorption port. The film sticking part 522 removes the film sticker 400 on the wound film and attaches it to the product 500. Since there is a certain probability that the film sticker 400 is not attached to the product 500, a film cleaning platform 54 is fixed on the frame 11 near the bearing platform 521. When it is detected that the film sticker 400 on the adsorption port of the film sticking part 522 is not attached to the surface of the product 500, the film sticking part 522 will move above the film cleaning table and stick the film sticker 400 at the adsorption port to the film cleaning table. Since the adhesiveness of the film sticker 400 that has been stuck once decreases and it is easy to be contaminated with dust, the film sticker 400 is discarded on the film cleaning table, and a new film sticker 400 is taken to attach to the product 500.

[0068] The above embodiments are only used to illustrate the technical concept and features of the present invention. Their purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and should not be used to limit the protection scope of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes that fall within the meaning and scope of the equivalent elements of the claims within the present invention.

Claims

1. An automatic welding mechanism, characterized in that, Including: A frame (11); A first workbench (12), rotatably connected to the frame (11). A plurality of first bearing plates (13) are fixedly arranged at the edge of the first workbench (12), and the first bearing plates (13) are arrayed at the edge of the first workbench (12); A first feeding assembly (14), fixedly arranged on the frame (11). The first feeding assembly (14) has multiple degrees of freedom and is used to convey a cover plate (100) onto the first bearing plate (13); A second feeding assembly (15), fixedly arranged on the frame (11). The second feeding assembly (15) has multiple degrees of freedom. The first bearing plate (13) sequentially conveys a current collecting plate (200) through the first feeding assembly (14) and the second feeding assembly (15) to be assembled onto the cover plate (100) on the first bearing plate (13); A first welding assembly (16), including a first welding piece (162) and several first pressing pieces (163). The first welding piece (162) is slidably connected to the frame (11) in the vertical direction. The output end of the first welding piece (162) is perpendicular to the rotation path of the first bearing plate (13). Several of the first pressing pieces (163) surround the output end of the first welding piece (162) and are used to press tightly the current collecting plate (200) and the cover plate (100). The first welding piece (162) welds the current collecting plate (200) and the cover plate (100) located on the first bearing plate (13); A carrier (164) is slidably connected to the frame (11) in the vertical direction. The carrier (164) is provided with a through hole (165) penetrating in the vertical direction. Several welding claws (166) are fixedly arranged inside the carrier (164). Several of the welding claws (166) extend towards the central axis of the through hole (165). The first pressing piece (163) is slidably connected inside the through hole (165). Part of the first pressing piece (163) is located inside the carrier (164), and part of the first pressing piece (163) extends downward out of the carrier (164). The first pressing piece (163) is elastically slidably connected to the carrier (164) through a spring. The carrier (164) and the welding claws (166) enclose an area for the first welding piece (162) to weld; 2. An automatic welding mechanism according to claim 1, wherein: The first bearing plate (13) is provided with a current collecting plate positioning pin (131), a cover plate positioning pin (132), and a limiting groove (133) arranged radially along the first workbench (12). The current collecting plate positioning pin (131) and the cover plate positioning pin (132) are respectively located at both ends of the limiting groove (133). The current collecting plate positioning pin (131) is used to restrain the plate body (2001) of the current collecting plate (200), the cover plate positioning pin (132) is used to restrain the cover plate (100), and the side wall of the limiting groove (133) is used to limit the ear (2002) of the current collecting plate (200); The frame (11) is provided with a locking assembly (17). The locking assembly (17) approaches or moves away from the first bearing plate (13) at the bottom of the first welding assembly (16) in the vertical direction. The output end of the locking assembly (17) is configured to be arranged around the busbar tray locating pin (131). The locking assembly (17) presses the busbar tray (200) onto the first bearing plate (13).

3. An automatic assembly and welding production line, characterized in that: An automatic welding mechanism (1) according to claim 2 further includes a coding device (2) and an electrical performance detection device (3) for coding the busbar tray (200) to be fed into the welding process. The output position of the coding device (2) is connected to the feeding position of the second feeding assembly (15). The frame (11) is provided with a first qualified product conveyor belt (191). The input end of the electrical performance detection device (3) is connected to the output end of the first qualified product conveyor belt (191).

4. An automatic assembly and welding production line according to claim 3, characterized in that: The coding device (2) includes a second workbench (21) rotatably connected to the frame (11). A plurality of second bearing plates (22) are fixedly arranged on the edge of the second workbench (21) in a circumferential array. A second moving member (261) moving in the vertical direction is fixedly arranged on the frame (11) on the peripheral side of the second workbench (21). A laser coder (262) and a flattening member (263) are fixedly arranged at the output end of the second moving member (261). The flattening member (263) is configured to be a hollow cylindrical structure for pressing the edge of the disk body (2001). The laser coder (262) is located inside the flattening member (263) for coding the disk body (2001).

5. An automatic assembly and welding production line according to claim 3, characterized in that: The electrical performance detection device (3) includes a third workbench (31). The third workbench (31) is rotatably connected to the frame (11). A plurality of third bearing plates (35) for carrying products (500) are fixedly arranged on the outer edge of the third workbench (31). A handling assembly (32), an insulation detection assembly (34), and a resistance detection assembly (33) are arranged on the outer peripheral side of the third workbench (31). The handling assembly (32) is used to handle the product (500) onto the third bearing plate (35). The third workbench (31) rotates successively through the insulation detection assembly (34) and the resistance detection assembly (33).

6. The automatic assembly and welding production line according to claim 3, characterized in that: An explosion-proof film assembly welding device (4) is provided at the input end of the automatic welding mechanism (1). The explosion-proof film assembly welding device (4) includes a fourth workbench (41) for carrying the combination of the cover plate (100) and the explosion-proof film (300). The fourth workbench (41) is rotatably connected to the frame (11). The frame (11) is fixedly provided with a second welding assembly (46) for welding the cover plate (100) and the explosion-proof film (300).

7. An automatic assembly and welding production line according to claim 6, characterized in that: A fourth conveying assembly (53), a film feeding feeder (51) and a film picking and placing assembly (52) are fixedly arranged on a frame (11) at the output end of the automatic welding mechanism (1). The fourth conveying assembly (53) is used for transporting the welded product (500). The film feeding feeder (51) is rotatably connected to the frame (11). The film picking and placing assembly (52) has multiple degrees of freedom to attach the film (400) on the film feeding feeder (51) to the product (500).

8. An automatic assembly and welding production line according to claim 7, characterized in that: The film picking and placing assembly (52) includes a carrying platform (521) and a film attaching member (522) both fixedly arranged on the frame (11). The top of the carrying platform (521) is recessed to form a channel for the wound film to pass through. A pair of pressing plates (523) are fixedly arranged in the channel. The pressing plates (523) are fixedly arranged on the side walls of the channel along the length direction of the channel. A gap for the wound film to pass through is left between the pressing plates (523) and the bottom of the channel. The film attaching member (522) with three degrees of freedom moves between the carrying platform (521) and the fourth conveying assembly (53) to remove the film (400) adhered to the wound film and attach it to the product (500).

9. An automatic assembly and welding production line according to claim 8, characterized in that: A film cleaning platform (54) is fixedly arranged on the frame (11). The film cleaning platform (54) is within the path range of the film attaching member (522). When the film (400) at the end of the film attaching member (522) is not adhered to the product (500), the film attaching member (522) moves to the film cleaning platform (54) to adhere the film (400) to the film cleaning platform (54).

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