Automatic deviation rectifying device of solar cell series welding machine

Abstract

The embodiment of the utility model provides an automatic deviation rectifying device of a solar cell series welding machine, which comprises a conveying mechanism, a deviation rectifying mechanism and a deviation rectifying mechanism, and is characterized in that the conveying mechanism comprises a bearing part with a bearing surface for bearing solar cells and a driving part for driving the bearing part and the solar cells on the bearing part to advance; the positioning mechanism comprises a plurality of end positioning pieces which are uniformly arranged along the direction perpendicular to the advancing direction of the bearing piece and parallel to the bearing surface and are positioned in the advancing path of the solar cell, and a lateral pushing assembly which is arranged on one side of the advancing path of the bearing piece and is positioned on the upstream side of the end positioning pieces; the top surface of the end positioning piece is higher than the bearing surface to block the front end edge of the solar cell, and the lateral pushing assembly pushes the corresponding side edge of the solar cell to move the solar cell to a preset position. According to the embodiment of the invention, the solar cell can be effectively rectified and positioned.

Description

Technical Field

[0001] The embodiment of the utility model relates to the technical field of solar cell string welding machines, and in particular to an automatic deviation correction device of a solar cell string welding machine. Background Art

[0002] An existing solar cell string welding machine usually includes a material tray device for loading solar cells, a welding table for carrying solar cells and welding ribbons, a cell transfer device for moving the solar cells in the material tray device to the welding table, a welding device for welding the solar cells and welding ribbons on the welding table, and a welding ribbon pressing mechanism for pressing the welding ribbon onto the solar cell during the welding process.

[0003] The inventors found in the specific implementation that since solar cells are usually stacked directly in the material tray device, the stacking of each solar cell is uneven. When the cell transfer device sends the stacked skewed solar cells to the welding table, it is impossible to ensure that the welding part of the solar cell is accurately aligned with the welding ribbon, resulting in the misalignment of the welding of the solar cell and the welding ribbon, and the welding yield is relatively poor. Utility Model Content

[0004] The technical problem to be solved by the embodiment of the utility model is to provide an automatic deviation correction device for a solar cell string welding machine, which can effectively realize the deviation correction of the solar cell and ensure that the welding part of the solar cell is accurately aligned with the welding strip.

[0005] In order to solve the above technical problems, the embodiment of the utility model provides the following technical solutions: an automatic deviation correction device of a solar cell string welding machine, used for correcting and positioning the solar cells sent by the unloading mechanism of the cell transfer device, comprising:

[0006] A conveying mechanism, comprising a bearing member having a bearing surface for bearing the solar cell and a driving member for driving the bearing member and the solar cell thereon to move along a predetermined direction from a receiving end to a positioning end of the conveying mechanism, wherein the bearing member receives the solar cell delivered by the unloading mechanism at the receiving end; and

[0007] The positioning mechanism arranged at the positioning end of the conveying mechanism includes a plurality of end positioning members evenly arranged in a direction perpendicular to the travel direction of the carrier and parallel to the carrying surface and located in the travel path of the solar cell, and a lateral push component arranged on one side of the travel path of the carrier and located on the upstream side of the end positioning member, the top surface of the end positioning member is higher than the carrying surface to block the front end edge of the solar cell, and the lateral push component pushes the corresponding side edge of the solar cell from the side to move the solar cell to a predetermined position for positioning.

[0008] Further, the end positioning member is a roller, and the outer wheel surface of the roller abuts against the solar cell; or the end positioning member is a ball bearing, and the outer ring surface of the outer ring of the ball bearing abuts against the solar cell.

[0009] Furthermore, the carrier is a conveyor belt in a closed loop, and the driving member includes an active roller and a driven roller on which the conveyor belt is wound respectively, and a rotating motor for driving the active roller to rotate and drive the conveyor belt to move forward.

[0010] Furthermore, an outer side surface of at least one of the active roller and the driven roller is provided with a positioning groove for positioning the conveyor belt in the width direction of the conveyor belt.

[0011] Furthermore, at least two conveyor belts are arranged side by side on the active roller and the driven roller along the axial direction of the active roller, each solar cell is jointly supported by the bearing surfaces of at least two conveyor belts arranged side by side, and the end positioning members are fixed on the corresponding support frames and arranged alternately with the conveyor belts.

[0012] Furthermore, the end positioning member is suspended above the bearing surface by means of a support frame, and the distance between the bottom surface of the end positioning member and the bearing surface is smaller than the thickness of the solar cell.

[0013] Furthermore, the active roller, the driven roller and the conveyor belt wound around the active roller and the driven roller are provided in at least two groups, and the at least two groups of active rollers are coaxially arranged and connected as a whole and rotate synchronously under the drive of the output end of the same rotating motor.

[0014] Furthermore, the positioning mechanism also includes a sensor assembled on the side of the end positioning member for detecting the position of the solar cell, and the lateral push component is connected to the sensor to implement the action of pushing the solar cell in response to the detection signal output by the sensor.

[0015] Furthermore, the lateral push assembly is fixed on a base, and a limit portion lower than the bearing surface is provided at the side of the base. The lateral push assembly includes a lateral pushing member whose output end reciprocates along an arrangement direction parallel to the end positioning member, and a push block fixed to the end of the output end of the lateral pushing member. The lateral pushing member is connected to the sensor to drive the push block to move in response to a detection signal output by the sensor, and the end of the push block forms a push portion for pushing the side edge of the solar cell, the top of the push portion abuts the solar cell, and the bottom of the push portion is stopped by the limit portion to limit the stroke of the push portion.

[0016] Furthermore, the automatic deviation-correcting device also includes a tensioning mechanism for pushing the driven roller away from the active roller to tension the conveyor belt, the tensioning mechanism includes a driven roller support seat on which the driven roller is pivotally mounted, a base fixedly disposed between the active roller and the driven roller, and a jacking force member assembled on the base, the end of the output shaft of the jacking force member being connected to the driven roller support seat.

[0017] After adopting the above technical scheme, the embodiment of the utility model has at least the following beneficial effects: the embodiment of the utility model utilizes the driving member of the conveying mechanism to drive the carrier together with the solar cell thereon to move in a predetermined direction, and at the same time assembles a plurality of end positioning members in the moving path of the solar cell to correspondingly resist the front end edge of the solar cell, and cooperates with the continuous movement of the carrier and the friction between the carrier and the solar cell to enable the originally skewed solar cell to rotate around the abutment portion with the corresponding end positioning member after abutting against an end positioning member to achieve automatic deviation correction; at the same time, the lateral pushing assembly can push the corresponding side edge of the solar cell from the side after the solar cell is corrected and positioned by the end positioning member, so that the solar cell can be pushed to the predetermined position, thereby effectively realizing the deviation correction and positioning of the solar cell, and facilitating the subsequent During the process, the transfer mechanism of the cell transfer device extracts the solar cell from the predetermined position, and after the cell transfer device sends a solar cell to the bearing surface of the automatic deviation correction device, it takes a period of time because the driving member of the conveying mechanism needs to drive the bearing member together with the solar cell thereon to move from the receiving end to the positioning end and complete the positioning. By reasonably setting the travel distance and the moving speed, this period of time can be sufficient for the discharge mechanism of the cell transfer device to place the next solar cell on the bearing surface of the bearing member located at the receiving end, so that the transmission can be carried out while the deviation is corrected, thereby improving the transmission efficiency; in addition, the placement and removal of the solar cell are implemented by the discharge mechanism and the transfer mechanism of the cell transfer device at the receiving end and the positioning end respectively, and the moving routes of the two will not interfere with each other but can be carried out synchronously, and the overall processing efficiency of deviation correction and transfer of solar cells is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention is a schematic structural diagram of an optional embodiment of the automatic deviation-correcting device of the solar cell string welding machine, in which a solar cell transfer device places a solar cell into a deviation-correcting conveying mechanism.

[0019] Figure 2 The utility model is a schematic structural diagram of an optional embodiment of the automatic deviation-correcting device of the solar cell string welding machine after the solar cell is placed in the deviation-correcting conveying mechanism.

[0020] Figure 3This is a schematic diagram of the top plan structure of an optional embodiment of the automatic deviation correction device of the solar cell string welding machine of the utility model, before and after the carrier conveys the skewed solar cell.

[0021] Figure 4 The schematic diagram of the top plan structure of the lateral pushing component of an optional embodiment of the automatic deviation correction device of the solar cell string welding machine of the utility model before and after the lateral pushing component pushes the lateral edge of the solar cell.

[0022] Figure 5 The utility model is a partial cross-sectional structural schematic diagram of an optional embodiment of the automatic deviation correction device of the solar cell string welding machine.

[0023] Figure 6 The figure is a schematic side structural diagram of an optional embodiment of the automatic deviation correction device of the solar cell string welding machine of the utility model.

[0024] Figure 7 The present invention is a schematic structural diagram of an optional embodiment of the automatic deviation correction device of the solar cell string welding machine from another perspective. DETAILED DESCRIPTION

[0025] The present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following illustrative embodiments and descriptions are only used to explain the present invention and are not intended to limit the present invention. In addition, the embodiments and features in the embodiments of the present application may be combined with each other without conflict.

[0026] like Figure 1-Figure 7 As shown, an optional embodiment of the utility model provides an automatic deviation correction device for a solar cell string welding machine, which is used to correct the deviation and position the solar cell B delivered by the unloading mechanism A of the solar cell transfer device, including:

[0027] The conveying mechanism 1 comprises a carrier 10 having a carrying surface for carrying the solar cell B and a driving member 12 for driving the carrier 10 and the solar cell B thereon to move from a receiving end to a positioning end of the conveying mechanism 1 in a predetermined direction, wherein the carrier 10 receives the solar cell B delivered by the unloading mechanism at the receiving end; and

[0028] The positioning mechanism 3 arranged at the positioning end of the conveying mechanism 1 includes a plurality of end positioning members 30 evenly arranged in a direction perpendicular to the travel direction of the carrier 10 and parallel to the carrying surface 10a and located in the travel path of the solar cell B, and a lateral push component 32 arranged on one side of the travel path of the carrier 10 and located on the upstream side of the end positioning member 30, the top surface of the end positioning member 30 is higher than the carrying surface 10a to block the front end edge of the solar cell B, and the lateral push component 32 pushes the corresponding side edge of the solar cell B from the side to position it.

[0029] The general principle and process of using the automatic deviation correction device provided in the embodiment of the utility model to correct the deviation of the solar cell B are as follows:

[0030] First, the unloading mechanism A of the cell transfer device places the solar cell B on the end of the carrier 10 away from the end positioning member 30 (such as Figure 3 Solar cell B shown by the solid line);

[0031] Then, the carrier 10 drives the solar cell B to move toward the end positioning member 30 under the drive of the driving member 12. If the solar cell B is not skewed, its front edge will synchronously abut against the end positioning member 30 to achieve end positioning. If the solar cell B is skewed, a relatively forward portion of the front edge of the solar cell B will first abut against a corresponding end positioning member 30 (such as Figure 3 The solar cell B shown by the dotted line in the middle), while the carrier 10 is still moving at this time, the friction between the carrier 10 and the solar cell B will cause the solar cell B to continue to move, so that the solar cell B rotates around the abutment portion between it and the end positioning member 30, thereby correcting the solar cell B, and also achieving the effect of the front end edge of the solar cell B and each end positioning member 30 abutting against each other to achieve end positioning (as shown in FIG. Figure 4 Solar cell B shown by the solid line);

[0032] Finally, when the end-to-end positioning of the solar cell B is completed, the side push assembly 32 pushes the corresponding side edge of the solar cell B from the side, and the solar cell B is moved to the predetermined position and positioned by the pushing stroke of the side push assembly 32 (such as Figure 4 The solar cell B shown by the dotted line in the middle) is then corrected and positioned, and the transfer mechanism (not shown) of the cell transfer device can take away the positioned solar cell B. In a specific implementation, the displacement of the solar cell B is usually relatively small. Figure 4In order to conveniently demonstrate the lateral movement of the solar cell B, the pushing stroke of the lateral pushing component 32 is increased.

[0033] The embodiment of the utility model utilizes the driving member 12 of the conveying mechanism 1 to drive the carrier 10 and the solar cell B thereon to move in a predetermined direction, and at the same time assembles a plurality of end positioning members 30 in the moving path of the solar cell B to correspondingly resist the front end edge of the solar cell B, and cooperates with the continuous movement of the carrier 10 and the friction between the carrier 10 and the solar cell B to make the originally skewed solar cell B rotate around the abutting part with the corresponding end positioning member 30 after abutting against an end positioning member 30 to realize automatic deviation correction; at the same time, the lateral pushing assembly 32 pushes the corresponding side edge of the solar cell B from the side after the solar cell B is corrected and positioned by the end positioning member 30, so that the solar cell B can be pushed to the predetermined position, thereby effectively realizing the deviation correction and positioning of the solar cell B, and facilitating the subsequent process by the battery The transfer mechanism of the cell transfer device extracts the solar cell B from the predetermined position, and after the cell transfer device sends a solar cell B to the bearing surface of the automatic deviation correction device, it takes a period of time because the driving member 12 of the conveying mechanism needs to drive the bearing member 10 together with the solar cell B thereon to move from the receiving end to the positioning end and complete the positioning. By reasonably setting the travel distance and the moving speed, this period of time can be sufficient for the discharge mechanism of the cell transfer device to place the next solar cell B on the bearing surface of the bearing member 10 located at the receiving end, so that the transmission can be carried out while the deviation is corrected, thereby improving the transmission efficiency; in addition, the placement and removal of the solar cell B are respectively implemented by the discharge mechanism and the transfer mechanism of the cell transfer device at the receiving end and the positioning end, and the moving routes of the two will not interfere with each other but can be carried out synchronously, and the overall processing efficiency of the deviation correction and transfer of the solar cell B is high.

[0034] In a specific implementation, when the transfer mechanism of the cell transfer device or the discharge mechanism A of the cell transfer device adopts a vacuum suction cup to pick up and place the solar cell B, it can be directly determined by judging the vacuum degree of the vacuum suction cup to determine whether the corresponding solar cell B is sucked away from the positioning end of the conveying mechanism 1 or to determine whether the solar cell B is placed in the receiving end of the conveying mechanism 1. Combined with the transmission speed of the carrier 10, it can be set to determine that the solar cell B on the conveying mechanism 1 has completed the end-to-end positioning after a predetermined delay period, and the corresponding side edge of the solar cell B can be pushed from the side by the side push component 32.

[0035] In an optional embodiment of the present invention, Figure 1-Figure 6As shown, the end positioning member 30 is a roller, and the outer wheel surface of the roller abuts against the solar cell B; or the end positioning member 30 is a ball bearing, and the outer ring surface of the outer ring of the ball bearing abuts against the solar cell B. In this embodiment, the end positioning member 30 is a member that can achieve rolling, such as a roller or a ball bearing. When the front end edge of the solar cell B abuts against the end positioning member 30, there is rolling friction between the end positioning member 30, and the friction force is small, so the solar cell is not easily damaged, and no obvious adverse effect is caused on the rotation correction and lateral movement of the solar cell B.

[0036] In an optional embodiment of the present invention, Figure 1-Figure 5 As shown, the carrier 10 is a closed loop conveyor belt, and the driving member 12 includes a driving roller 121 and a driven roller 123 on which the conveyor belt 10 is wound, and a rotating motor 125 for driving the driving roller 121 to rotate and drive the conveyor belt 10 to move forward. In this embodiment, the driving roller 121 is driven by the rotating motor 125 to rotate, thereby driving the conveyor belt 10 to continuously transport the solar cell B forward. The structure is simple and can effectively drive the movement of the solar cell B. Figure 1 and Figure 2 In the embodiment shown, the rotating motor 125 drives the active roller 121 through a belt transmission assembly. Of course, a transmission mechanism such as a gear transmission assembly can also be used to drive the active roller 121. It is understandable that other common conveying mechanisms can also be used to convey the solar cell B, such as a carrier that moves in a closed loop in the same height plane under the drive of a corresponding driving mechanism, with the top surface of the carrier serving as the bearing surface 10a.

[0037] In an optional embodiment of the present invention, Figure 7 As shown, the outer side surface of at least one of the active roller 121 and the driven roller 123 is provided with a positioning groove 121a for positioning the conveyor belt 10 in the width direction of the conveyor belt 10. In this embodiment, by providing the positioning groove 121a, the conveyor belt 10 is effectively positioned to prevent it from moving in the axial direction.

[0038] In an optional embodiment of the present invention, Figure 1-Figure 5As shown, at least two conveyor belts 10 are arranged side by side on the active roller 121 and the driven roller 123 along the axial direction of the active roller 121, and each solar cell B is jointly carried by the bearing surfaces 10a of at least two conveyor belts 10 arranged side by side, and the end positioning members 30 are fixed on the corresponding support frame 4 and arranged alternately with the conveyor belts 10. In this embodiment, at least two conveyor belts 10 are arranged side by side to jointly carry and transport the solar cells B, which is conducive to setting the end positioning members 30 between the two adjacent conveyor belts 10, and can effectively avoid the excessive spacing between the two adjacent end positioning members 30, which causes the solar cell B to be stuck between the two end positioning members 30 in a skewed state and is difficult to correct, and the correction effect is good.

[0039] In an optional embodiment of the present invention, Figure 6 As shown, the end positioning member 30 is suspended above the bearing surface 10a by means of the support frame 4, and the distance between the bottom surface of the end positioning member 30 and the bearing surface 10a is less than the thickness of the solar cell B. In this embodiment, by suspending the end positioning member 30 above the bearing surface 10a by means of the support frame 4, the distance between two adjacent end positioning members 30 can also be effectively set, and the bearing member 10 with a single body width sufficient to bear the solar cell B can also be used, and the distance between the bottom surface of the end positioning member 30 and the bearing surface 10a is less than the thickness of the solar cell B, which can effectively stop the solar cell B without the solar cell B passing through the gap between the bottom surface of the end positioning member 30 and the bearing surface 10a.

[0040] In an optional embodiment of the present invention, Figure 1-Figure 3 As shown, at least two groups of the active rollers 121, the driven rollers 123, and the conveyor belt 10 wound around the active rollers 121 and the driven rollers 123 are provided, and at least two groups of the active rollers 121 are coaxially arranged and connected as a whole and rotate synchronously under the drive of the output end of the same rotating motor 125. In this embodiment, multiple groups of active rollers 121 are driven to rotate by the same rotating motor 125, which simplifies the structure and reduces the overall cost.

[0041] In an optional embodiment of the present invention, Figure 1-Figure 5 As shown, the positioning mechanism 3 also includes a sensor 34 assembled on the side of the end positioning member 30 for detecting the position of the solar cell B, and the lateral push assembly 32 is connected to the sensor 34 to respond to the detection signal output by the sensor 34 to push the solar cell B. In this embodiment, the sensor 34 is used to detect the position of the solar cell B, which has a good detection effect and is convenient for controlling the lateral push assembly 32.

[0042] Of course, in an optional embodiment, Figure 1 As shown, the sensor 34 can be assembled on the upstream side of the end positioning member 30 and arranged close to one of the end positioning members 30 located in the middle of the carrying surface 10a. When the sensor 34 detects the front end edge of the solar cell B, the solar cell B has not yet completed the end positioning. However, in combination with the conveying speed of the carrying member 10, the sensor 34 can be set to send out a detection signal after a predetermined delay time, and the predetermined delay time can ensure that the device completes the deviation correction and end positioning of the solar cell B. The lateral push component 32 pushes the corresponding side edge of the solar cell B from the side in response to the detection signal.

[0043] In another optional embodiment, the sensor 34 may also be arranged on a conveying mechanism for taking away the solar cell B after the deviation correction and positioning. When the sensor 34 detects that the solar cell B has been taken away, the next solar cell B has not yet completed the end-to-end positioning. However, in combination with the conveying speed of the carrier 10, the sensor 34 may be arranged to send out a detection signal after a predetermined delay time. Similarly, when the predetermined time is reached, it is determined that the next solar cell B has completed the end-to-end positioning, and the lateral push component 32 may respond to the detection signal and push the corresponding side edge of the solar cell B from the side.

[0044] In another optional embodiment, two sensors 34 may be provided, both arranged along the positioning reference line for end-to-end positioning of the solar cell B by the end positioning member 30. When the two sensors 34 detect the front end edge of the solar cell B, it indicates that the solar cell B has been corrected and end-to-end positioned. At this time, a detection signal is sent out, and the lateral push component 32 responds to the detection signal to push the corresponding side edge of the solar cell B from the side.

[0045] In an optional embodiment of the present invention, Figure 1-Figure 5As shown, the lateral push component 32 is fixed on a base 5, and a limiting portion 50 lower than the bearing surface 10a is provided at the side of the base 5. The lateral push component 32 includes a lateral pushing member 321 whose output end reciprocates along the arrangement direction parallel to the end positioning member 30, and a push block 323 fixed to the end of the output end of the lateral pushing member 321. The lateral pushing member 321 is connected to the sensor 34 to drive the push block 323 to move with the detection signal output by the sensor 34. The end of the push block 323 forms a push portion 323a for pushing the side edge of the solar cell B. The top of the push portion 323a abuts the solar cell B, and the bottom of the push portion 323a is stopped by the limiting portion 50 to limit the stroke of the push portion 323a. In this embodiment, the driving push block 323 is reciprocated in the arrangement direction of the positioning member 30 relative to the end thereof, which can effectively drive the push portion 323a to push the side edge of the solar cell B. The limiting portion 50 is also provided to limit the push stroke of the push portion 323a, thereby ensuring that each solar cell B after correction can be positioned at the same position, and the structural principle is also simple.

[0046] In a specific implementation, the lateral driving force member 321 can be a linear driving member such as a cylinder or a linear motor, and the push portion 323a is a side surface of the push block 323. Of course, the push block 323 can also be further convex to form a plurality of push portions 323a arranged at intervals. Figure 5 As shown, the limiting portion 50 can be a limiting groove opened on the base 5, and the bottom of the push portion 323a is correspondingly inserted into the limiting groove and stopped and limited by the groove end wall of the limiting groove, or the limiting portion 50 can also be a limiting block fixed on the base 5.

[0047] In an optional embodiment of the present invention, Figure 1 and Figure 7As shown, the automatic deviation-correcting device further includes a tensioning mechanism 7 for pushing the driven roller 123 in a direction away from the active roller 121 to tension the conveyor belt 10. The tensioning mechanism 7 includes a driven roller support seat 70 on which the driven roller 123 is pivotally mounted, a base 5 fixedly disposed between the active roller 121 and the driven roller 123, and a jacking force member 72 assembled on the base 5, wherein the end of the output shaft of the jacking force member 72 is connected to the driven roller support seat 70. In this embodiment, the tensioning mechanism 7 is also provided, and the jacking force member 72 of the tensioning mechanism 7 is used to drive the driven roller 123 together with the driven roller support seat 70 to move linearly back and forth relative to the active roller 121, so that the tension of the two conveyor belts 10 can be effectively adjusted, and the use is more convenient. In a specific implementation, the lateral thrust assembly 32 and the jacking force member 72 can be arranged on the same base 5, or two bases 5 can be arranged to assemble the lateral thrust assembly 32 and the jacking force member 72 respectively, and the support frame 4 can also be assembled on the base 5; in addition, an active roller support seat 52 can also be arranged to pivotally mount the active roller 121.

[0048] The embodiments of the utility model are described above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the utility model, ordinary technicians in this field can also make many forms without departing from the scope of protection of the utility model and the claims, which all belong to the protection scope of the utility model.

Claims

1. An automatic deviation correction device for a solar cell string welding machine, used for correcting and positioning the solar cell delivered by the unloading mechanism of the solar cell transfer device, characterized in that: The automatic deviation correcting device comprises: A conveying mechanism, comprising a bearing member having a bearing surface for bearing the solar cell and a driving member for driving the bearing member and the solar cell thereon to move along a predetermined direction from a receiving end to a positioning end of the conveying mechanism, wherein the bearing member receives the solar cell delivered by the unloading mechanism at the receiving end; and The positioning mechanism arranged at the positioning end of the conveying mechanism includes a plurality of end positioning members evenly arranged in a direction perpendicular to the travel direction of the carrier and parallel to the carrying surface and located in the travel path of the solar cell, and a lateral push component arranged on one side of the travel path of the carrier and located on the upstream side of the end positioning member, the top surface of the end positioning member is higher than the carrying surface to block the front end edge of the solar cell, and the lateral push component pushes the corresponding side edge of the solar cell from the side to move the solar cell to a predetermined position for positioning.

2. The automatic deviation correction device of the solar cell string welding machine according to claim 1, characterized in that: The end positioning member is a roller, and the outer wheel surface of the roller abuts against the solar cell; or the end positioning member is a ball bearing, and the outer ring surface of the outer ring of the ball bearing abuts against the solar cell.

3. The automatic deviation correction device of the solar cell string welding machine according to claim 1, characterized in that: The carrier is a conveyor belt in a closed loop, and the driving member includes a driving roller and a driven roller on which the conveyor belt is wound respectively, and a rotating motor for driving the driving roller to rotate and drive the conveyor belt to move forward.

4. The automatic deviation correction device of the solar cell string welding machine according to claim 3, characterized in that: A positioning groove for positioning the conveyor belt in the width direction of the conveyor belt is provided on the outer side surface of at least one of the active roller and the driven roller.

5. The automatic deviation correction device of the solar cell string welding machine according to claim 3, characterized in that: At least two conveyor belts are arranged side by side on the active roller and the driven roller along the axial direction of the active roller, each solar cell is supported by the bearing surfaces of at least two conveyor belts arranged side by side, and the end positioning members are fixed on the corresponding support frames and arranged alternately with the conveyor belts.

6. The automatic deviation correction device of the solar cell string welding machine according to claim 1 or 2, characterized in that: The end positioning member is suspended above the bearing surface by means of a support frame, and the distance between the bottom surface of the end positioning member and the bearing surface is smaller than the thickness of the solar cell sheet.

7. The automatic deviation correction device of the solar cell string welding machine according to any one of claims 3 to 5, characterized in that: The active rollers, the driven rollers and the conveyor belts wound around the active rollers and the driven rollers are provided in at least two groups, and the active rollers of at least two groups are coaxially arranged and connected as a whole and rotate synchronously under the drive of the output end of the same rotating motor.

8. The automatic deviation correction device for a solar cell string welding machine according to claim 1, characterized in that: The positioning mechanism also includes a sensor assembled on the side of the end positioning member for detecting the position of the solar cell. The lateral push assembly is connected to the sensor to push the solar cell in response to the detection signal output by the sensor.

9. The automatic deviation correction device of the solar cell string welding machine according to claim 8, characterized in that: The lateral push assembly is fixed on a base, and a limit portion lower than the bearing surface is provided on the side of the base. The lateral push assembly includes a lateral pushing member whose output end reciprocates along an arrangement direction parallel to the end positioning member, and a push block fixed to the end of the output end of the lateral pushing member. The lateral pushing member is connected to the sensor to drive the push block to move in response to a detection signal output by the sensor. The end of the push block forms a push portion for pushing the side edge of the solar cell. The top of the push portion abuts against the solar cell, and the bottom of the push portion is stopped by the limit portion to limit the stroke of the push portion.

10. The automatic deviation correction device for a solar cell string welding machine according to claim 3, characterized in that: The automatic deviation-correcting device also includes a tensioning mechanism for pushing the driven roller away from the active roller to tension the conveyor belt, the tensioning mechanism includes a driven roller support seat on which the driven roller is pivotally mounted, a base fixedly disposed between the active roller and the driven roller, and a jacking force member assembled on the base, the end of the output shaft of the jacking force member being connected to the driven roller support seat.

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