Welding device and welding method based on solar cells

Abstract

The invention relates to the field of battery piece welding, and discloses a solar battery piece welding device and method.The solar battery piece welding device comprises a pedestal, a welding table is fixedly connected to the upper end of the pedestal, a positioning mechanism is installed on the welding table, and the positioning mechanism comprises four clamping blocks with one sides being of an L-shaped structure; the four clamping blocks are arranged at the top ends of the welding points in a sliding mode. A heating lamp on the movable frame is powered on to work, two main grid lines and a welding strip above a battery piece are heated, the to-be-welded position of the battery piece is preheated, after preheating is completed, a working power source of the spot welding machine is turned on, the spot welding machine moves forwards in the direction away from the fixed plate, spot welding is conducted on the welding strip position, and welding is completed. In the movable spot welding process of the spot welding machine, the movable seat supporting rod is driven to move together, the connecting rod is driven to move, the movable frame is pulled to rotate and lift with the fixed rod as a rotating point, the heating lamp on the movable frame is lifted to be away from the position above a battery piece, the heating effect of the heating lamp on the battery piece is weakened, and the battery is prevented from being scalded.

Description

Technical Field

[0001] The present invention relates to the technical field of solar cell welding, and in particular to a solar cell welding device and a welding method. Background Art

[0002] Solar cell welding is a key link in the production of solar panels, including single welding and series welding. Single welding is to weld two welding strips on the main grid line on the front of the cell to prepare for the subsequent series connection of the cells. It is the preliminary step in connecting the cells.

[0003] When welding the two main grid lines and welding strips of a solar cell, spot welding is usually performed using a spot welding machine. However, before spot welding, the main grid lines and welding strips of the cell need to be preheated to make the temperatures of the two close before welding, thereby reducing the stress caused by the difference in thermal expansion during welding and preventing the cell from being damaged by cracks, breakage, and the like. However, after the existing heating lamp preheats the main grid lines and welding strips, the heating lamp needs to be turned off to prevent high-temperature damage to the cell. Then, after the cell is welded, the heating lamp is restarted to preheat the next cell. The heating lamp needs to take time to heat up. Such frequent turning on and off of the heating lamp not only causes a load on the heating lamp, but also affects the preheating efficiency of the cell, and therefore has a certain impact on the welding efficiency of a large number of cell cells.

[0004] Based on this, a solar cell welding device and a welding method are proposed herein to solve the above problems. Summary of the invention

[0005] In order to overcome the above technical problems, the object of the present invention is to provide a solar cell welding device and a welding method. The object of the present invention can be achieved by the following technical solutions:

[0006] A solar cell welding device comprises a pedestal, the upper end of which is fixedly connected to a welding table, a positioning mechanism is installed on the welding table, the positioning mechanism comprises four clamping blocks with one side in an L-shaped structure, and the four clamping blocks are slidably arranged at the top of the welding point;

[0007] The pedestal is equipped with a welding mechanism, which includes a fixing plate, which is vertically slidably connected to one side of the pedestal, a guide rail is transversely fixed to the upper end of the fixing plate, and a spot welder is arranged on the guide rail for horizontal sliding;

[0008] The pedestal is equipped with a preheating mechanism, which includes a support frame, which is fixed to the upper end of the pedestal, and the support frame is fixed with a transversely arranged fixing rod, and both ends of the fixing rod are rotatably connected to a movable frame, and the upper ends of the two movable frames are fixed with a plurality of inclined heating lamps;

[0009] The welding table is equipped with a lifting mechanism;

[0010] A driving mechanism is arranged at the bottom end of the fixing plate.

[0011] Preferably, the positioning mechanism also includes four sliding blocks, a movable groove in a U-shaped structure is penetrated on the upper end of the welding table, the four sliding blocks are respectively fixedly connected to the bottom ends of four clamping blocks, the clamping blocks are slidably connected inside the movable grooves, a turntable is rotatably connected to the central part of the welding table, four connecting rods are rotatably connected to the bottom of the turntable, the other ends of the four connecting rods are respectively rotatably connected to the ends of the four clamping blocks, a motor 1 is fixed inside the welding table, and a belt is connected between the motor 1 and the turntable.

[0012] Preferably, the welding mechanism also includes a mounting seat, which is slidably connected to the inside of the guide rail, the upper end of the spot welding machine is fixedly connected to the bottom end of the mounting seat, a motor 2 is fixed to one side of the guide rail, a screw rod 1 is fixed to the output shaft of the motor 2, the screw rod 1 is rotatably connected to the guide rail, and the screw rod 1 is threadedly connected to the mounting seat.

[0013] Preferably, the preheating mechanism also includes a movable seat, which is fixed on one side of the spot welding machine. The movable seat is slidably connected to a support rod, and both ends of the support rod are rotatably connected to connecting rods, and the lower ends of the two connecting rods are rotatably connected to the ends of the two movable frames respectively.

[0014] Preferably, the driving mechanism includes screw rod 2, which is threadedly connected to the lower end of the fixed plate, and a motor 3 is fixed to the side wall of the pedestal, and the output shaft of the motor 3 is fixedly connected to the end of the screw rod 2. A slide groove is opened on one side of the pedestal, and a limiting block is fixed to the side plate at the bottom end of the fixed plate, and the limiting block is slidably connected inside the slide groove.

[0015] Preferably, the lifting mechanism includes an electric push rod, which is fixed inside the pedestal. A pushing column is fixed to the telescopic end of the electric push rod. The center of the turntable is a hollow structure. The pushing column passes through the inside of the turntable and extends out of the top of the pedestal. A lifting plate is fixed to the upper end of the pushing column.

[0016] The present application provides a solar cell welding method, which is applicable to the above-mentioned solar cell welding device, and comprises the following steps:

[0017] Step 1: Place the cell to be welded in the grooves of the four clamps for clamping, and place the welding ribbon on the main grid line above the cell;

[0018] Step 2: Turn on the heating lamp switch to energize the heating lamp to heat both sides of the upper end of the battery cell, and preheat the position of the main grid line of the battery cell to be welded. After the preheating is completed, start the spot welding machine, and drive the screw rod 1 to rotate through the work of the motor 2, drive the mounting seat to move away from the fixed plate, and drive the spot welding machine forward. During the forward movement, the spot welding machine spot welds the welding strip on the main grid line, so that the welding strip and the battery cell are welded together;

[0019] Step 3: During the spot welding process, the spot welding machine drives the support rod to move together, so that the fixed rod moves, and the movable frame is pulled to rotate and lift with the fixed rod as the rotation point, so that the heating lamp on the movable frame moves and lifts away from the upper end of the battery cell, and the heating of the battery cell is reduced during the spot welding process;

[0020] Step 4: When welding is completed, take out the battery cell, control motor 2 to drive screw 1 to reverse, drive the mounting base and spot welding machine to move and reset, and then weld the next battery cell.

[0021] Beneficial effects of the present invention:

[0022] 1. The present invention works by energizing the heating lamp on the movable frame to heat and raise the temperature of the two main grid lines and the welding strip position above the battery cell, and preheat the battery cell to be welded. After the preheating is completed, the working power of the spot welding machine is turned on, and the spot welding machine moves forward in the direction away from the fixed plate to spot weld the welding strip position. During the spot welding process of the spot welding machine, the movable seat support rod is driven to move together, and the connecting rod is driven to move, and the movable frame is pulled to rotate and lift with the fixed rod as the rotation point, so that the heating lamp on the movable frame is lifted away from the top of the battery cell. At this time, the heating effect of the heating lamp on the battery cell is weakened to prevent the battery cell from being scalded. Therefore, during the process of the spot welding machine moving forward to spot weld the battery cell and the welding strip, the heating lamp no longer preheats the battery cell, and there is no need to turn off the heating lamp.

[0023] 2. The movable seat of the present invention is slidably connected to the support rod. When the fixed plate is moved in three directions toward the motor to move the guide rail and the spot welding machine to another main grid line of the battery cell, the movable seat and the support rod slide relative to each other but are still connected together, which does not affect the forward movement of the spot welding machine. During the spot welding process, the two movable frames are pulled up by the connecting rod, and the heating lamp can still be lifted.

[0024] 3. The motor drives the belt to rotate, drives the turntable to rotate, pulls the four connecting rods to move, makes the four sliding blocks slide close to each other in the movable groove, drives the four clamping blocks to move close to each other, and adjusts the distance between the four clamping blocks, so that within a certain range, the four clamping blocks can be positioned to clamp different sizes of battery cells for welding. The operation is convenient, and there is a wide range of options for clamping and welding battery cells of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] Figure 1 A schematic diagram of the structure of a solar cell welding device provided by the present invention;

[0027] Figure 2 It is a schematic diagram of the welding table, preheating mechanism and welding mechanism of the present invention;

[0028] Figure 3 is a schematic diagram of the interior of the welding station of the present invention;

[0029] Figure 4 It is a schematic diagram of the welding table, positioning mechanism and lifting mechanism of the present invention;

[0030] Figure 5 It is a schematic diagram of the welding table and the positioning mechanism of the present invention;

[0031] Figure 6 It is a schematic diagram of the preheating mechanism of the present invention.

[0032] In the figure: 1. base; 2. preheating mechanism; 21. heating lamp; 22. connecting rod; 23. movable frame; 24. fixed rod; 25. support rod; 26. movable seat; 27. support frame; 3. positioning mechanism; 31. clamping block; 32. movable groove; 33. sliding block; 34. connecting rod; 35. motor 1; 36. belt; 37. turntable; 4. welding table; 5. welding mechanism; 51. mounting seat; 52. guide rail; 53. screw rod 1; 54. motor 2; 55. fixing plate; 56. spot welding machine; 6. driving mechanism; 61. motor 3; 62. screw rod 2; 63. limit block; 64. slide groove; 7. lifting mechanism; 71. lifting plate; 72. pushing column; 73. electric push rod; 8. battery cell. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1 - Figure 6 As shown, a solar cell welding device comprises a base 1, a welding table 4 is fixedly connected to the upper end of the base 1, a positioning mechanism 3 is installed on the welding table 4, and the positioning mechanism 3 comprises four clamping blocks 31 with an L-shaped structure on one side, and the four clamping blocks 31 are slidably arranged at the top of the welding point, and are used to clamp the solar cell 8 for welding;

[0035] The pedestal 1 is provided with a welding mechanism 5, which includes a fixing plate 55, which is vertically slidably connected to one side of the pedestal 1, a guide rail 52 is transversely fixed to the upper end of the fixing plate 55, and a spot welder 56 is arranged on the guide rail 52 for horizontal sliding. The spot welder 56 is a prior art and can automatically spot weld. The specific working principle will not be described in detail here.

[0036] The pedestal 1 is equipped with a preheating mechanism 2, which includes a support frame 27, which is fixed to the upper end of the pedestal 1, and the support frame 27 is fixed with a transversely arranged fixed rod 24, and the two ends of the fixed rod 24 are rotatably connected to the movable frame 23, and the upper ends of the two movable frames 23 are fixed with a plurality of inclined heating lamps 21, and the preheating mechanism 2 also includes a movable seat 26, and the movable seat 26 is fixed to one side of the spot welding machine 56, and the movable seat 26 is slidably connected to the support rod 25, and the two ends of the support rod 25 are respectively rotatably connected to the connecting rod 22, and the lower ends of the two connecting rods 22 are respectively rotatably connected to the ends of the two movable frames 23; when working, the personnel place the four corners of the battery cell 8 on the grooves of the four clamping blocks 31, respectively, position and clamp the battery cell 8, and place the welding strip on the main grid line above the battery cell 8, and first pass through the movable frame 23 The heating lamp 21 is powered on to heat the two main grid lines and the welding strip position above the battery cell 8, and preheat the battery cell 8 to be welded. After the preheating is completed, the working power of the spot welding machine 56 is turned on, and the spot welding machine 56 moves forward away from the fixed plate 55 to spot weld the welding strip position. During the spot welding process of the spot welding machine 56, the movable seat 26 and the support rod 25 are driven to move together, and the connecting rod 22 is driven to move, and the movable frame 23 is pulled to rotate and lift with the fixed rod 24 as the rotation point, so that the heating lamp 21 on the movable frame 23 is lifted away from the battery cell 8. At this time, the heating effect of the heating lamp 21 on the battery cell 8 is weakened to prevent the battery cell 8 from being scalded. Therefore, during the process of the spot welding machine 56 moving forward to spot weld the battery cell 8 and the welding strip, the heating lamp 21 will no longer preheat the battery cell 8, and there is no need to turn off the heating lamp 21;

[0037] The movable seat 26 is slidably connected to the support rod 25. When the fixed plate 55 is moved toward the direction of the motor 3 61 to move the guide rail 52 and the spot welder 56 to the other main grid line of the battery cell 8, the movable seat 26 and the support rod 25 slide relative to each other but are still connected together, which does not affect the forward movement of the spot welder 56. During the spot welding process, the two movable frames 23 are pulled up by the connecting rod 22, and the heating lamp 21 can still be lifted;

[0038] The welding table 4 is equipped with a lifting mechanism 7;

[0039] A driving mechanism 6 is disposed at the bottom end of the fixing plate 55 .

[0040] The positioning mechanism 3 also includes four sliding blocks 33. The upper end of the welding table 4 is penetrated by a movable groove 32 with a square-shaped structure. The four sliding blocks 33 are respectively fixedly connected to the bottom ends of the four clamping blocks 31. The clamping blocks 31 are slidably connected inside the movable groove 32. A turntable 37 is rotatably connected to the central part of the welding table 4. Four connecting rods 34 are rotatably connected to the bottom of the turntable 37. The other ends of the four connecting rods 34 are rotatably connected to the ends of the four clamping blocks 31. A motor 35 is fixed inside the welding table 4. A belt 36 is connected between the motor 35 and the turntable 37. When working, the battery cell 8 is placed between the four clamping blocks 31 for clamping and positioning for welding. The motor 35 drives the belt 36 to rotate, which drives the turntable 37 to rotate counterclockwise ( Figure 3 Looking from the front, pull the four connecting rods 34 to move, so that the four sliding blocks 33 slide together in the movable grooves 32, drive the four clamping blocks 31 to move together, and adjust the distance between the four clamping blocks 31, so that within a certain range, the four clamping blocks 31 can be positioned to clamp battery cells 8 of different sizes for welding, which is easy to operate and has a wide range of options for clamping and welding battery cells 8 of different specifications.

[0041] The welding mechanism 5 also includes a mounting seat 51, which is slidably connected to the inside of the guide rail 52, and the upper end of the spot welding machine 56 is fixedly connected to the bottom end of the mounting seat 51. A motor 2 54 is fixed to one side of the guide rail 52, and a screw 1 53 is fixed to the output shaft of the motor 2 54. The screw 1 53 is rotatably connected to the guide rail 52, and the screw 1 53 is threadedly connected to the mounting seat 51; when working, the motor 2 54 works to drive the screw 1 53 to rotate, drive the mounting seat 51 to slide inside the guide rail 52, and drive the spot welding machine 56 to move forward in the direction away from the fixed plate 55, and spot welding is performed on the welding strip on the battery cell 8. When welding is completed, the motor 2 54 is controlled to work, drive the screw 1 53 to reverse, drive the mounting seat 51 to move and reset, and drive the spot welding machine 56 to move and reset in the direction of the fixed plate 55. During the resetting process of the spot welding machine 56, the connecting rod 22 is pushed by the connecting rod 22 to rotate and reset the movable frame 23, so that the heating lamp 21 is moved and reset in a horizontal state, which is convenient for preheating the main grid line of the next battery cell 8.

[0042] The driving mechanism 6 includes a screw rod 2 62, which is threadedly connected to the lower end of the fixed plate 55, a motor 3 61 is fixed to the side wall of the pedestal 1, and the output shaft of the motor 3 61 is fixedly connected to the end of the screw rod 2 62. A slide groove 64 is provided on one side of the pedestal 1, and a limit block 63 is fixed to the side plate at the bottom end of the fixed plate 55, and the limit block 63 is slidably connected to the inside of the slide groove 64; when the welding of the welding strip on a main grid line on the battery cell 8 is completed, the motor 3 61 can be used to drive the screw rod 2 62 to rotate, drive the fixed plate 55 to slide in the direction of the motor 3 61, and drive the guide rail 52 and the spot welding machine 56 to move to above another main grid line of the battery cell 8. At this time, the spot welding machine 56 can be moved forward to weld another welding strip on the main grid line, and two welding strips can be welded on the main grid line on the front side of the battery cell 8.

[0043] The lifting mechanism 7 includes an electric push rod 73, which is fixed inside the base 1. A pushing column 72 is fixed to the telescopic end of the electric push rod 73. The central part of the turntable 37 is a hollow structure. The pushing column 72 passes through the inside of the turntable 37 and extends out of the top of the base 1. A lifting plate 71 is fixed to the upper end of the pushing column 72. When the battery cell 8 is welded, the electric push rod 73 is extended to push the pushing column 72 upward, so that the lifting plate 71 moves up and pushes the battery cell 8 up, which is convenient for personnel to take out the welded battery cell 8 and place the next battery cell 8 on the four clamps 31 for preheating and welding.

[0044] The present application provides a solar cell welding method, which is applicable to the above-mentioned solar cell welding device, and comprises the following steps:

[0045] Step 1: Place the cell to be welded in the grooves of the four clamps for clamping, and place the welding ribbon on the main grid line above the cell;

[0046] Step 2: Turn on the heating lamp switch to energize the heating lamp to heat both sides of the upper end of the battery cell, and preheat the position of the main grid line of the battery cell to be welded. After the preheating is completed, start the spot welding machine, and drive the screw rod 1 to rotate through the work of the motor 2, drive the mounting seat to move away from the fixed plate, and drive the spot welding machine forward. During the forward movement, the spot welding machine spot welds the welding strip on the main grid line, so that the welding strip and the battery cell are welded together;

[0047] Step 3: During the spot welding process, the spot welding machine drives the support rod to move together, so that the fixed rod moves, and the movable frame is pulled to rotate and lift with the fixed rod as the rotation point, so that the heating lamp on the movable frame moves and lifts away from the upper end of the battery cell, and the heating of the battery cell is reduced during the spot welding process;

[0048] Step 4: When welding is completed, take out the battery cell, control motor 2 to drive screw 1 to reverse, drive the mounting base and spot welding machine to move and reset, and then weld the next battery cell.

[0049] Working principle: The personnel place the four corners of the battery cell 8 in the grooves of the four clamping blocks 31 respectively, position and clamp the battery cell 8, and place the welding strip on the main grid line above the battery cell 8. First, the heating lamp 21 on the movable frame 23 is powered on to heat the two main grid lines and the welding strip position above the battery cell 8, and the battery cell 8 to be welded is preheated. After the preheating is completed, the working power of the spot welding machine 56 is turned on, and the motor 2 54 is driven to drive the screw 1 53 to rotate, drive the mounting seat 51 to slide inside the guide rail 52, and drive the spot welding machine 56 to move away from the fixed plate 55 to spot weld the welding strip position. During the spot welding process of the spot welding machine 56, the movable seat 26 support rod 25 is driven to move together, and the connecting rod 22 is driven to move, and the movable seat 26 support rod 25 is driven to move. The frame 23 is rotated and lifted with the fixed rod 24 as the rotation point, so that the heating lamp 21 on the movable frame 23 is lifted away from the top of the battery cell 8. At this time, the heating effect of the heating lamp 21 on the battery cell 8 is weakened to prevent the battery cell 8 from being scalded. Therefore, when the spot welder 56 moves forward to spot weld the battery cell 8 and the welding strip, the heating lamp 21 will no longer preheat the battery cell 8, and there is no need to turn off the heating lamp 21. When welding is completed, the control motor 2 54 is operated to drive the screw rod 1 53 to reverse, drive the mounting seat 51 to move and reset, and drive the spot welder 56 to move and reset in the direction of the fixed plate 55. During the resetting process of the spot welder 56, the movable frame 23 is rotated and reset by pushing the connecting rod 22 to push the connecting rod 22, so that the heating lamp 21 moves and resets to a horizontal state, which is convenient for preheating the main grid line of the next battery cell 8.

[0050] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A solar cell welding device, comprising a base (1), wherein the upper end of the base (1) is fixedly connected to a welding table (4), characterized in that: A positioning mechanism (3) is installed on the welding table (4), and the positioning mechanism (3) comprises four clamping blocks (31) with one side in an L-shaped structure, and the four clamping blocks (31) are slidably arranged at the top of the welding point; The pedestal (1) is equipped with a welding mechanism (5), the welding mechanism (5) comprising a fixing plate (55), the fixing plate (55) being vertically slidably connected to one side of the pedestal (1), a guide rail (52) being laterally fixed to the upper end of the fixing plate (55), and a spot welder (56) being horizontally slidably arranged on the guide rail (52); The pedestal (1) is equipped with a preheating mechanism (2), the preheating mechanism (2) comprising a support frame (27), the support frame (27) being fixed to the upper end of the pedestal (1), the support frame (27) being fixed with a transversely arranged fixing rod (24), both ends of the fixing rod (24) being rotatably connected with movable frames (23), and the upper ends of the two movable frames (23) are both fixed with a plurality of inclined heating lamps (21); The welding table (4) is equipped with a lifting mechanism (7); A driving mechanism (6) is provided at the bottom end of the fixing plate (55).

2. A solar cell welding device according to claim 1, characterized in that: The positioning mechanism (3) further comprises four sliding blocks (33); a movable groove (32) in a U-shaped structure is penetrated through the upper end of the welding platform (4); the four sliding blocks (33) are respectively fixedly connected to the bottom ends of four clamping blocks (31); the clamping blocks (31) are slidably connected inside the movable grooves (32); a turntable (37) is rotatably connected to the central part of the welding platform (4); four connecting rods (34) are rotatably connected to the bottom of the turntable (37); the other ends of the four connecting rods (34) are respectively rotatably connected to the ends of the four clamping blocks (31); a motor (35) is fixed inside the welding platform (4); a belt (36) is connected between the motor (35) and the turntable (37).

3. A solar cell welding device according to claim 1, characterized in that: The welding mechanism (5) further comprises a mounting seat (51), the mounting seat (51) being slidably connected inside the guide rail (52), the upper end of the spot welding machine (56) being fixedly connected to the lower end of the mounting seat (51), a second motor (54) being fixed to one side of the guide rail (52), a first screw rod (53) being fixed to the output shaft of the second motor (54), the first screw rod (53) being rotatably connected to the guide rail (52), and the first screw rod (53) being threadedly connected to the mounting seat (51).

4. A solar cell welding device according to claim 1, characterized in that: The preheating mechanism (2) further comprises a movable seat (26), the movable seat (26) being fixed on one side of the spot welding machine (56), the movable seat (26) being slidably connected to a support rod (25), the two ends of the support rod (25) being rotatably connected to connecting rods (22), the lower ends of the two connecting rods (22) being rotatably connected to the ends of the two movable frames (23) respectively.

5. A solar cell welding device according to claim 1, characterized in that: The driving mechanism (6) comprises a second screw rod (62), the second screw rod (62) being threadedly connected to the lower end of the fixed plate (55), a third motor (61) being fixed to the side wall of the pedestal (1), the output shaft of the third motor (61) being fixedly connected to the end of the second screw rod (62), a sliding groove (64) being provided on one side of the pedestal (1), a limiting block (63) being fixed to the side plate at the bottom end of the fixed plate (55), and the limiting block (63) being slidably connected inside the sliding groove (64).

6. A solar cell welding device according to claim 2, characterized in that: The lifting mechanism (7) comprises an electric push rod (73), the electric push rod (73) is fixed inside the pedestal (1), a push column (72) is fixed to the telescopic end of the electric push rod (73), the central part of the turntable (37) is a hollow structure, the push column (72) passes through the inside of the turntable (37) and extends out of the top of the pedestal (1), and a lifting disc (71) is fixed to the upper end of the push column (72).

7. A solar cell welding method according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: Place the cell to be welded in the grooves of the four clamps for clamping, and place the welding ribbon on the main grid line above the cell; Step 2: Turn on the heating lamp switch, so that the heating lamp is powered on to heat the upper sides of the battery cell, and preheat the position of the battery cell main grid line to be welded. After the preheating is completed, start the spot welder, and drive the screw rod 1 to rotate through the motor 2, drive the mounting seat to move away from the fixed plate, and drive the spot welder forward. During the forward movement, the spot welder spot welds the welding strip on the main grid line, so that the welding strip and the battery cell are welded together; Step 3: During the spot welding process, the spot welding machine drives the support rod to move together, so that the fixed rod moves, and the movable frame is pulled to rotate and lift with the fixed rod as the rotation point, so that the heating lamp on the movable frame moves and lifts away from the upper end of the battery cell, and the heating of the battery cell is reduced during the spot welding process; Step 4: When welding is completed, take out the battery cell, control motor 2 to drive screw 1 to reverse, drive the mounting base and spot welding machine to move and reset, and then weld the next battery cell.

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