A high-power battery piece welding device and a method of using the same

Abstract

This invention discloses a welding device and method for high-power solar cells, relating to the field of solar cell production technology. The device includes a workbench surrounded by a frame. A first motor is mounted on one side of the workbench, and a first conveyor wheel is mounted on one side of the first motor. A dust extraction mechanism is suspended inside the frame, and a first turntable is mounted below the frame. A welding rod conveying mechanism is mounted on one side of a third motor, and a welding mechanism is mounted on one side of the welding rod conveying mechanism. An auxiliary mechanism is also mounted on one side of the welding mechanism. This invention firstly removes dust from the surface of the solar cells during transport without affecting their rated transport capacity. Simultaneously, the device uses pressure to attract and rotate the solar cells, preventing breakage during transport. Furthermore, it enables rapid welding of the solar cells, improving welding efficiency.

Description

Technical Field

[0001] This invention relates to the field of battery cell manufacturing technology, specifically to a welding device for high-power battery cells and its usage method. Background Technology

[0002] During the production of solar cells, welding rods are used for welding. Various welding devices exist, such as the solar cell welding device described in application number CN2023109756456. This device includes a worktable with multiple support columns fixedly connected to its bottom and a guide rail fixedly connected to its top. A linear motor is mounted on the top of the guide rail. This invention, through the design of a linear motor and welding gun assembly, automates the entire process of moving and welding the solar cells, replacing traditional manual welding and improving welding stability. Simultaneously, a hot air blower delivers hot air through ducts and out through an exhaust hood, preheating the solar cells before welding for better results. A fixing mechanism is also included. Opening a bidirectional cylinder pushes two first connecting rods, which in turn move second connecting rods inward, causing two third connecting rods to move push plates inward. The two push plates clamp and fix the solar cells to be welded, preventing them from shaking during welding and improving welding stability.

[0003] In the aforementioned device, if the surface of the battery cell is covered with dust that cannot be removed during welding, and the battery cell is relatively fragile and prone to breakage during welding, the problem is that it is not ideal.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and proposed a welding equipment for high-power battery cells and its usage method. Summary of the Invention

[0005] The purpose of this invention is to provide a welding device for high-power solar cells and a method for using the same, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a welding device for high-power battery cells, comprising a workbench, an outer frame surrounding the workbench, a first motor mounted on one side of the upper part of the workbench, a first conveyor wheel mounted on one side of the first motor, and a second conveyor wheel mounted on the side of the first motor away from the first conveyor wheel. A dust collection mechanism is suspended on one side of the inner part of the frame, and a lifting frame is mounted on one side of the dust collection mechanism. A first turntable is mounted below the lifting frame, and a third motor is mounted on the side of the first turntable away from the dust collection mechanism. A welding rod conveying mechanism is mounted on one side of the third motor, and a welding mechanism is mounted on one side of the welding rod conveying mechanism. An auxiliary mechanism is mounted on one side of the welding mechanism.

[0007] Furthermore, a base is installed at the bottom of the workbench, a feed window is provided on one side of the frame, and a discharge window is provided on the other side of the frame away from the feed window.

[0008] Furthermore, a conveyor belt is installed between the first conveyor wheel and the second conveyor wheel, and the first conveyor wheel and the second conveyor wheel form a rotating structure through the conveyor belt. The output end of the first motor is rotatably connected to the first conveyor wheel through a belt.

[0009] Furthermore, the dust collection mechanism includes a dust collection box, a ventilation plate, a drive shaft, a first fan, and a second fan. The top of the dust collection box is equipped with a ventilation plate for exhausting air, and the drive shaft is installed on the upper part of the inside of the dust collection box. The first fan is installed on the surface of the drive shaft, and the second fan is installed on the lower part of the inside of the dust collection box.

[0010] Furthermore, the dust collection mechanism also includes a first dust collection screen, a second dust collection screen, a second motor, a linkage shaft, and an air inlet. The first dust collection screen and the second dust collection screen are located between the first fan and the second fan. An air inlet is provided at the bottom of the dust collection box, and a second motor is installed on one side of the dust collection box. A linkage shaft is installed at the output end of the second motor, and the second motor is rotatably connected to the transmission shaft and the second fan respectively through the linkage shaft.

[0011] Furthermore, a hydraulic telescopic hoisting column is installed below the first turntable, and a first transfer mechanism, a second transfer mechanism, a third transfer mechanism, and a fourth transfer mechanism are respectively arrayed on the surface of the hydraulic telescopic hoisting column. The first transfer mechanism, the second transfer mechanism, the third transfer mechanism, and the fourth transfer mechanism have the same structure and are used to transfer battery cells.

[0012] Furthermore, the first transfer mechanism is equipped with an equipment box, a negative pressure fan, a pressurization chamber, a rectifier hood, and suction cylinders. The negative pressure fan is installed inside the equipment box, and the pressurization chamber is installed at the bottom of the equipment box. The rectifier hood is installed at the bottom of the pressurization chamber, and several suction cylinders are arranged in a ring inside the rectifier hood.

[0013] Furthermore, the electrode feeding mechanism includes a support rod, a first robotic arm, and an electrode turntable. The first robotic arm is mounted on one end of the support rod, and the electrode turntable is mounted on the end of the first robotic arm away from the support rod. The welding mechanism includes a bracket, a hydraulic telescopic column, and a spot welding head. The hydraulic telescopic column is mounted below the bracket, and the spot welding head is mounted on the end of the hydraulic telescopic column away from the bracket. The auxiliary mechanism includes a second robotic arm, a bearing, and an electrode hook. The bearing is mounted on one end of the second robotic arm, and the electrode hook is mounted on the bearing.

[0014] Furthermore, a second turntable is installed on the other side above the workbench, and a stepper motor is installed on one side of the second turntable. The output end of the stepper motor is rotatably connected to the second turntable via a belt. A welding table is installed above the second turntable, and the surface of the welding table is provided with four welding grooves arranged in a circular array. Rollers for supporting the welding table are installed on both sides below the welding table.

[0015] Furthermore, a method for using a high-power solar cell welding device includes the following steps:

[0016] Step 1: First, the battery cells to be processed are placed above the conveyor belt through the feed window. Then, the first motor drives the first conveyor wheel to rotate via the belt. The first conveyor wheel then drives the second conveyor wheel to rotate via the conveyor belt, so that the battery cells are transported on the conveyor belt.

[0017] Step 2: When the battery cells are conveyed on the conveyor belt, the dust on the surface of the battery cells is cleaned by the dust suction mechanism. When the dust is suctioned, the second motor drives the transmission shaft and the second fan to rotate through the linkage shaft. First, the second fan sucks the dust on the surface of the battery cells into the dust collection box through the air inlet. Then, the dust is suctioned by the first and second dust suction nets by the action of the second fan. The first fan starts to work under the action of the transmission shaft to suction the dust on the first and second dust suction nets. The air inside the dust collection box is discharged from the ventilation plate.

[0018] Step 3: After the battery cells arrive at the side of the conveyor belt near the second conveyor wheel, they are picked up by the first transfer mechanism and then transferred to the inside of the welding tank on the surface of the welding table. Specifically: First, the hydraulic telescopic lifting column extends to bring the first transfer mechanism closer to the conveyor belt. Then, the negative pressure fan pressurizes the battery cells through the suction cylinder after being pressurized by the pressurization chamber. Then, the third motor drives the first turntable to rotate 90 degrees through the belt, so that the second transfer mechanism moves above the conveyor belt to pick up the second battery cell. Then, the third motor drives the first turntable to rotate 90 degrees through the belt, so that the third transfer mechanism picks up the third battery cell. Then, it continues to rotate, so that the fourth transfer mechanism comes above the conveyor belt to pick up the fourth battery cell. Then, the first transfer mechanism is located on the side of the welding table near the conveyor belt, the negative pressure fan is turned off, and the battery cells are placed into the inside of the welding tank.

[0019] Step 4: The stepper motor then drives the second turntable to rotate 90 degrees and position it below the welding mechanism. The welding rod installed on the welding rod turntable is then moved above the battery cell by the first robotic arm. The welding rod hook is then moved above the battery cell by the second robotic arm and hooked onto the welding rod. Subsequently, the spot welding head moves above the battery cell under the extension and retraction of the hydraulic telescopic column to weld the battery cell. After the battery cell is welded, the second turntable continues to rotate, positioning the second battery cell above the welding mechanism for further welding. At this point, the first welded battery cell is moved to the side near the discharge window, and then the welded battery cell is removed from the discharge window.

[0020] This invention provides a welding device for high-power battery cells and its method of use, which has the following advantages: First, it can remove dust from the surface of the battery cells during the transportation process without affecting the rated transportation of the battery cells. At the same time, the battery cells are attracted and rotated by pressure, which avoids the breakage of the battery cells during transportation. It can also quickly weld the battery cells and improve the welding efficiency.

[0021] In this application, after the battery cells arrive at the side of the conveyor belt near the second conveyor wheel, they are picked up by the first transfer mechanism and then transferred to the inside of the welding tank on the surface of the welding table. Specifically: First, the hydraulic telescopic lifting column extends to bring the first transfer mechanism closer to the conveyor belt. Then, the negative pressure fan pressurizes the battery cells through the suction cylinder after being pressurized by the pressurization chamber. Then, the third motor drives the first turntable to rotate 90 degrees via the belt, so that the second transfer mechanism moves above the conveyor belt to pick up the second battery cell. Then, the third motor drives the first turntable to rotate another 90 degrees via the belt, so that the third transfer mechanism picks up the third battery cell. Then, it continues to rotate, so that the fourth transfer mechanism comes above the conveyor belt to pick up the fourth battery cell. Then, the first transfer mechanism is located on the side of the welding table near the conveyor belt, the negative pressure fan is turned off, and the battery cells are placed into the inside of the welding tank. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a welding device for high-power battery cells according to the present invention;

[0023] Figure 2 This is a schematic diagram of the internal structure of the dust collection mechanism of a welding device for high-power battery cells according to the present invention;

[0024] Figure 3 This is a schematic diagram of the bottom structure of the hydraulic telescopic hoisting column of a high-power battery cell welding equipment according to the present invention;

[0025] Figure 4 This is a schematic diagram of the internal structure of the first transfer mechanism of a high-power battery cell welding device according to the present invention;

[0026] Figure 5 This is a schematic diagram of the electrode feeding mechanism, welding mechanism, and auxiliary mechanism of a welding equipment for high-power battery cells according to the present invention.

[0027] Figure 6 This is a top view of the welding table of a welding device for high-power battery cells according to the present invention.

[0028] In the diagram: 1. Workbench; 2. Base; 3. Frame; 4. Feed window; 5. Discharge window; 6. First motor; 7. First conveyor wheel; 8. Conveyor belt; 9. Second conveyor wheel; 10. Dust collection mechanism; 1001. Dust collection box; 1002. Ventilation plate; 1003. Drive shaft; 1004. First fan; 1005. First dust collection screen; 1006. Second dust collection screen; 1007. Second motor; 1008. Linkage shaft; 1009. Second fan; 1010. Air inlet; 11. Lifting frame; 12. First turntable; 13. Third motor; 14. Hydraulic telescopic lifting column; 15. First transfer mechanism; 1501. 1502. Spare box; 1503. Negative pressure fan; 1504. Pressure booster chamber; 1505. Rectifier; 1506. Suction cylinder; 17. Second transfer mechanism; 18. Third transfer mechanism; 19. Fourth transfer mechanism; 10. Welding electrode conveying mechanism; 1901. Support rod; 1902. First robotic arm; 1903. Welding electrode turntable; 20. Welding mechanism; 2001. Bracket; 2002. Hydraulic telescopic column; 2003. Spot welding head; 21. Auxiliary mechanism; 2101. Second robotic arm; 2102. Bearing; 2103. Welding electrode hook; 22. Second turntable; 23. Stepper motor; 24. Welding table; 25. Welding groove; 26. Roller. Implementation

[0029] Please see Figures 1 to 6 The present invention provides a technical solution: a welding device for high-power battery cells and a method for using the same, comprising a workbench 1, an outer frame 3 surrounding the workbench 1, a first motor 6 mounted on one side of the upper part of the workbench 1, a first conveyor wheel 7 mounted on one side of the first motor 6, and a second conveyor wheel 9 mounted on the side of the first motor 6 away from the first conveyor wheel 7, a dust collection mechanism 10 suspended on one side of the inner part of the frame 3, a lifting frame 11 mounted on one side of the dust collection mechanism 10, a first turntable 12 mounted below the lifting frame 11, a third motor 13 mounted on the side of the first turntable 12 away from the dust collection mechanism 10, a welding rod conveying mechanism 19 mounted on one side of the third motor 13, a welding mechanism 20 mounted on one side of the welding rod conveying mechanism 19, and an auxiliary mechanism 21 mounted on one side of the welding mechanism 20.

[0030] The bottom of the workbench 1 is equipped with a base 2, and a feed window 4 is provided on one side of the frame 3, and a discharge window 5 is provided on the other side of the frame 3 away from the feed window 4.

[0031] A conveyor belt 8 is installed between the first conveyor wheel 7 and the second conveyor wheel 9, and the first conveyor wheel 7 and the second conveyor wheel 9 form a rotating structure through the conveyor belt 8. The output end of the first motor 6 is rotatably connected to the first conveyor wheel 7 through a belt.

[0032] The dust collection mechanism 10 includes a dust collection box 1001, a ventilation plate 1002, a drive shaft 1003, a first fan 1004, and a second fan 1009. The top of the dust collection box 1001 is equipped with a ventilation plate 1002 for exhausting air, and the drive shaft 1003 is installed on the upper part of the interior of the dust collection box 1001. The first fan 1004 is installed on the surface of the drive shaft 1003, and the second fan 1009 is installed on the lower part of the interior of the dust collection box 1001.

[0033] The vacuuming mechanism 10 also includes a first vacuuming mesh 1005, a second vacuuming mesh 1006, a second motor 1007, a linkage shaft 1008, and an air inlet 1010. The first vacuuming mesh 1005 and the second vacuuming mesh 1006 are located between the first fan 1004 and the second fan 1009. The bottom of the vacuuming box 1001 is provided with an air inlet 1010, and the second motor 1007 is installed on one side of the vacuuming box 1001. The output end of the second motor 1007 is equipped with a linkage shaft 1008, and the second motor 1007 is rotatably connected to the transmission shaft 1003 and the second fan 1009 through the linkage shaft 1008.

[0034] A hydraulic telescopic hoisting column 14 is installed below the first turntable 12, and a first transfer mechanism 15, a second transfer mechanism 16, a third transfer mechanism 17 and a fourth transfer mechanism 18 are respectively arranged in an array on the surface of the hydraulic telescopic hoisting column 14. The first transfer mechanism 15, the second transfer mechanism 16, the third transfer mechanism 17 and the fourth transfer mechanism 18 have the same structure and are used to transfer battery cells.

[0035] The first transfer mechanism 15 is equipped with an equipment box 1501, a negative pressure fan 1502, a pressure chamber 1503, a rectifier 1504, and suction cylinders 1505. The negative pressure fan 1502 is installed inside the equipment box 1501, and the pressure chamber 1503 is installed at the bottom of the equipment box 1501. The rectifier 1504 is installed at the bottom of the pressure chamber 1503, and several suction cylinders 1505 are arranged in a ring inside the rectifier 1504.

[0036] The electrode feeding mechanism 19 includes a support rod 1901, a first robotic arm 1902, and an electrode turntable 1903. The first robotic arm 1902 is mounted on one end of the support rod 1901, and the electrode turntable 1903 is mounted on the end of the first robotic arm 1902 away from the support rod 1901. The welding mechanism 20 includes a bracket 2001, a hydraulic telescopic column 2002, and a spot welding head 2003. The hydraulic telescopic column 2002 is mounted below the bracket 2001, and the spot welding head 2003 is mounted on the end of the hydraulic telescopic column 2002 away from the bracket 2001. The auxiliary mechanism 21 includes a second robotic arm 2101, a bearing 2102, and an electrode hook 2103. The bearing 2102 is mounted on one end of the second robotic arm 2101, and the electrode hook 2103 is mounted on the bearing 2102.

[0037] A second turntable 22 is installed on the other side above the workbench 1, and a stepper motor 23 is installed on one side of the second turntable 22. The output end of the stepper motor 23 is rotatably connected to the second turntable 22 via a belt. A welding table 24 is installed above the second turntable 22, and four welding grooves 25 arranged in a circular array are provided on the surface of the welding table 24. Rollers 26 for supporting the welding table 24 are installed on both sides below the welding table 24.

[0038] In summary, a method for using a high-power solar cell welding device includes the following steps:

[0039] Step 1: First, the battery cells to be processed are placed above the conveyor belt 8 through the feed window 4. Then, the first motor 6 drives the first conveyor wheel 7 to rotate through the belt. Then, the first conveyor wheel 7 drives the second conveyor wheel 9 to rotate through the conveyor belt 8, so that the battery cells are transported on the conveyor belt 8.

[0040] Step 2: When the battery cells are conveyed on the conveyor belt 8, the dust on the surface of the battery cells is cleaned by the dust suction mechanism 10. When the dust is suctioned, the second motor 1007 drives the transmission shaft 1003 and the second fan 1009 to rotate through the linkage shaft 1003. First, the second fan 1009 sucks the dust on the surface of the battery cells into the dust collection box 1001 through the air inlet 1010. Then, the dust is suctioned by the first dust suction net 1005 and the second dust suction net 1006 by the action of the second fan 1007. The first fan 1004 starts to work under the action of the transmission shaft 1003 to suction the dust onto the first dust suction net 1005 and the second dust suction net 1006. The air inside the dust collection box 1001 is discharged from the ventilation plate 1002.

[0041] Step 3: After the battery cell arrives at the side of the conveyor belt 8 near the second conveyor wheel 9, it is picked up by the first transfer mechanism 15 and then transferred to the inside of the welding groove 25 on the surface of the welding table 24. Specifically: First, the hydraulic telescopic hoisting column 14 extends to bring the first transfer mechanism 15 closer to the conveyor belt 8. Then, the negative pressure fan 1502 pressurizes the battery cell through the pressure chamber 1503 and the suction cylinder 1505 picks it up. Then, the third motor 13 drives the first turntable 12 to rotate 90 degrees through the belt, so that the second transfer mechanism 16 moves above the conveyor belt 8 to pick up the second battery cell. Then, the third motor 13 drives the first turntable 12 to rotate 90 degrees through the belt, so that the third transfer mechanism 17 picks up the third battery cell. Then, it continues to rotate, so that the fourth transfer mechanism 18 comes above the conveyor belt 8 to pick up the fourth battery cell. Then, the first transfer mechanism 15 is located on the side of the welding table 24 near the conveyor belt 8, and the negative pressure fan 1502 is turned off to put the battery cell into the inside of the welding groove 25.

[0042] Step 4: Then, the stepper motor 23 drives the second turntable 22 to rotate via the belt, causing the second turntable 22 to rotate 90 degrees and come to the bottom of the welding mechanism 20. Then, the welding rod installed on the welding rod turntable 1903 moves to the top of the battery cell under the action of the first robotic arm 1902. Then, the welding rod hook 2103 moves to the top of the battery cell under the action of the second robotic arm 2101 and hooks the welding rod. Subsequently, the spot welding head 2003 moves to the top of the battery cell under the extension and retraction of the hydraulic telescopic column 2002 to weld the battery cell. After the battery cell is welded, the second turntable 22 continues to rotate so that the second battery cell is above the welding mechanism 20 and continues to be welded. At this time, the first battery cell that has been welded moves to the side near the discharge window 5 and then the welded battery cell is taken out from the discharge window 5.

[0043] The testing parameters of the high-power battery cells produced using this invention are as follows:

[0044]

[0045]

[0046] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A welding device for high-power solar cells, comprising a workbench (1), characterized in that, The workbench (1) is surrounded by a frame (3), and a first motor (6) is installed on one side of the upper part of the workbench (1). A first conveyor wheel (7) is installed on one side of the first motor (6), and a second conveyor wheel (9) is installed on the side of the first motor (6) away from the first conveyor wheel (7). A dust collection mechanism (10) is suspended on one side of the inner part of the frame (3), and a hoisting frame (11) is installed on one side of the dust collection mechanism (10). A first turntable (12) is installed below the hoisting frame (11), and a third motor (13) is installed on the side of the first turntable (12) away from the dust collection mechanism (10). A welding rod conveying mechanism (19) is installed on one side of the third motor (13), and a welding mechanism (20) is installed on one side of the welding rod conveying mechanism (19). At the same time, an auxiliary mechanism (21) is installed on one side of the welding mechanism (20). The dust collection mechanism (10) includes a dust collection box (1001), a ventilation plate (1002), a drive shaft (1003), a first fan (1004), and a second fan (1009). The top of the dust collection box (1001) is equipped with a ventilation plate (1002) for exhausting air, and the drive shaft (1003) is installed on the upper part of the interior of the dust collection box (1001). The first fan (1004) is installed on the surface of the drive shaft (1003), and the second fan (1009) is installed on the lower part of the interior of the dust collection box (1001). The dust collection mechanism (10) further includes a first dust collection net (1005), a second dust collection net (1006), a second motor (1007), a linkage shaft (1008), and an air inlet (1010). The first dust collection net (1005) and the second dust collection net (1006) are located between the first fan (1004) and the second fan (1009). The bottom of the dust collection box (1001) is provided with an air inlet (1010), and the second motor (1007) is installed on one side of the dust collection box (1001). The output end of the second motor (1007) is equipped with a linkage shaft (1008), and the second motor (1007) is rotatably connected to the transmission shaft (1003) and the second fan (1009) respectively through the linkage shaft (1008). The electrode conveying mechanism (19) is provided with a support rod (1901), a first robotic arm (1902) and an electrode turntable (1903). The first robotic arm (1902) is installed at one end of the support rod (1901), and the electrode turntable (1903) is installed at the end of the first robotic arm (1902) away from the support rod (1901). The welding mechanism (20) is provided with a bracket (2001), a hydraulic telescopic column (2002) and a spot welding head (2003). Hydraulic telescopic column (2002) is installed below the support (2001), and a spot welding head (2003) is installed at the end of the hydraulic telescopic column (2002) away from the support (2001). The auxiliary mechanism (21) is provided with a second robotic arm (2101), a bearing (2102) and a welding rod hook (2103). The bearing (2102) is installed at one end of the second robotic arm (2101), and a welding rod hook (2103) is installed on the bearing (2102).

2. The welding equipment for high-power battery cells according to claim 1, characterized in that, The bottom of the workbench (1) is equipped with a base (2), and a feed window (4) is provided on one side of the frame (3), and a discharge window (5) is provided on the other side of the frame (3) away from the feed window (4).

3. The welding equipment for high-power battery cells according to claim 2, characterized in that, A conveyor belt (8) is installed between the first conveyor wheel (7) and the second conveyor wheel (9), and the first conveyor wheel (7) and the second conveyor wheel (9) form a rotating structure through the conveyor belt (8). The output end of the first motor (6) is rotatably connected to the first conveyor wheel (7) through a belt.

4. The welding equipment for high-power solar cells according to claim 3, characterized in that, A hydraulic telescopic hoisting column (14) is installed below the first turntable (12), and a first transfer mechanism (15), a second transfer mechanism (16), a third transfer mechanism (17) and a fourth transfer mechanism (18) are respectively arranged in an array on the surface of the hydraulic telescopic hoisting column (14). The first transfer mechanism (15), the second transfer mechanism (16), the fourth transfer mechanism (17) and the third transfer mechanism (18) have the same structure and are used to transfer battery cells.

5. The welding equipment for high-power battery cells according to claim 4, characterized in that, The first transfer mechanism (15) is provided with an equipment box (1501), a negative pressure fan (1502), a booster chamber (1503), a rectifier (1504) and suction cylinders (1505). The negative pressure fan (1502) is installed inside the equipment box (1501), and the booster chamber (1503) is installed at the bottom of the equipment box (1501). The rectifier (1504) is installed at the bottom of the booster chamber (1503), and several suction cylinders (1505) are arranged in a ring inside the rectifier (1504).

6. The welding equipment for high-power battery cells according to claim 5, characterized in that, A second turntable (22) is installed on the other side above the workbench (1), and a stepper motor (23) is installed on one side of the second turntable (22). The output end of the stepper motor (23) is rotatably connected to the second turntable (22) via a belt. A welding table (24) is installed above the second turntable (22), and four welding grooves (25) arranged in a circular array are provided on the surface of the welding table (24). Rollers (26) for supporting the welding table (24) are installed on both sides below the welding table (24).

7. The method of using the welding equipment for high-power battery cells according to claim 6, characterized in that, The method of use includes the following steps: Step 1: First, the battery cells to be processed are placed above the conveyor belt (8) through the feed window (4). Then, the first motor (6) drives the first conveyor wheel (7) to rotate through the belt. Then, the first conveyor wheel (7) drives the second conveyor wheel (9) to rotate through the conveyor belt (8) so that the battery cells are transported on the conveyor belt (8). Step 2: When the battery cells are conveyed on the conveyor belt (8), the dust on the surface of the battery cells is cleaned by the dust suction mechanism (10). When the dust is suctioned, the second motor (1007) drives the transmission shaft (1003) and the second fan (1009) to rotate through the linkage shaft (1003). First, the second fan (1009) sucks the dust on the surface of the battery cells into the dust suction box (1001) through the air inlet (1010). Then, the dust is suctioned by the first dust suction net (1005) and the second dust suction net (1006) through the action of the second fan (1007). The first fan (1004) starts to work under the action of the transmission shaft (1003) to suction the dust onto the first dust suction net (1005) and the second dust suction net (1006). The air inside the dust suction box (1001) is discharged from the ventilation plate (1002). Step 3: After the battery cells arrive at the side of the conveyor belt (8) near the second conveyor wheel (9), they are picked up by the first transfer mechanism (15) and then transferred to the inside of the welding groove (25) on the surface of the welding table (24). Specifically, firstly, the hydraulic telescopic lifting column (14) extends to bring the first transfer mechanism (15) closer to the conveyor belt (8). Then, the negative pressure fan (1502) pressurizes the battery cells through the pressure chamber (1503) and picks them up through the suction cylinder (1505). Then, the third motor (13) drives the first turntable (12) to rotate 90 degrees via the belt. The second transfer mechanism (16) moves above the conveyor belt (8) to pick up the second battery cell. Then the third motor (13) drives the first turntable (12) to rotate 90 degrees via the belt, so that the third transfer mechanism (17) picks up the third battery cell. Then it continues to rotate, so that the fourth transfer mechanism (18) comes above the conveyor belt (8) to pick up the fourth battery cell. Then the first transfer mechanism (15) is located on the welding table (24) near the side of the conveyor belt (8). The negative pressure fan (1502) is turned off and the battery cell is put into the welding tank (25). Step 4: Then the stepper motor (23) drives the second turntable (22) to rotate through the belt, so that the second turntable (22) rotates 90 degrees to the bottom of the welding mechanism (20). Then the welding rod installed on the welding rod turntable (1903) moves to the top of the battery cell under the action of the first robotic arm (1902). Then the welding rod hook (2103) moves to the top of the battery cell under the action of the second robotic arm (2101) and hooks the welding rod with the welding rod hook (2103). Then, the spot welding head (2003) moves to the top of the battery cell under the extension and retraction of the hydraulic telescopic column (2002) to weld the battery cell. After the battery cell is welded, the second turntable (22) continues to rotate so that the second battery cell is located above the welding mechanism (20) and continues to be welded. At this time, the first battery cell after welding is moved to the side near the discharge window (5) and then the welded battery cell is taken out from the discharge window (5).

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