A detection tool for photovoltaic solar cell piece

Abstract

The utility model discloses a kind of detection tool for photovoltaic solar cell piece, including support frame and sliding frame, the inside sliding installation of support frame has sliding frame, and sliding frame extends to the outside of support frame, the top of sliding frame is installed with support plate, the top of support plate is slidingly installed with moving plate, the top of moving plate is slidingly installed with sliding plate, the moving plate outside of sliding plate side is provided with connecting frame, clamping frame is symmetrically installed on the outer wall of connecting frame, rotating shaft is installed on the outer wall of connecting frame close to sliding plate side.The utility model not only realizes the clamping of detection tool to the stable clamping of photovoltaic solar cell piece multiple position support, facilitates the multistage fixing and limiting of photovoltaic solar cell piece convenient, and facilitates the multistage adjustment of detection tool to photovoltaic solar cell piece detection position convenient, increases the detection range of detection tool to photovoltaic solar cell piece.

Description

Technical Field

[0001] This utility model relates to the field of testing tooling technology, specifically a testing tooling for photovoltaic solar cells. Background Technology

[0002] Solar cells are the basic building blocks of solar cells, primarily used to convert light energy into electrical energy. They can be divided into solar cell sheets and metal-based solar cells. Solar cell sheets mainly use semiconductor materials such as monocrystalline silicon and polycrystalline silicon, while metal-based solar cells often use metal materials such as stainless steel and phosphor bronze. The former is widely used in photovoltaic power generation systems, while the latter is commonly found in conductive components of electronic devices. The testing of photovoltaic solar cell sheets mainly includes three dimensions: performance evaluation, safety certification, and process control, involving key technologies such as electroluminescence, current-voltage curve testing, and insulation resistance.

[0003] For example, the testing fixture for photovoltaic solar cells disclosed in the authorization announcement number CN222883494U aims to solve the technical problem of the large reaction force on the solar cells caused by the current rigid contact fixtures. It includes a base plate, a U-shaped plate A, a U-shaped plate B, and a clamping and testing structure. The U-shaped plate A is fixed on the top side of the base plate. The U-shaped plate B is arranged above the U-shaped plate A. A plurality of telescopic rod bodies are arranged in a rectangular array between the bottom side of the U-shaped plate B and the inner bottom side of the U-shaped plate A. The telescopic rod bodies are fitted with buffer springs. A gap is left between the U-shaped plate B and the U-shaped plate A. The clamping and testing structure is arranged at the front end of one side of the top side of the base plate.

[0004] Although it achieves the advantage of offsetting the impact force generated by placing the battery cell to be tested on the U-shaped plate B through the compression of the buffer spring and the contraction of the telescopic rod body, thus reducing the impact on the battery cell.

[0005] However, this does not solve the problem that existing testing fixtures of this type are generally not conducive to the stable clamping of photovoltaic solar cells at multiple positions during use, are not convenient for convenient multi-level fixing and limiting of photovoltaic solar cells, and are not convenient for convenient multi-level adjustment of the testing position of photovoltaic solar cells, thus affecting the testing range and efficiency of the testing fixture for photovoltaic solar cells. Utility Model Content

[0006] The purpose of this invention is to provide a testing fixture for photovoltaic solar cells, in order to solve the problems mentioned in the background art, such as the inconvenience of the testing fixture for stable clamping of photovoltaic solar cells at multiple positions, the inconvenience of convenient multi-level fixing and limiting of photovoltaic solar cells, and the inconvenience of convenient multi-level adjustment of the testing position of photovoltaic solar cells, which affect the testing range and efficiency of the testing fixture for photovoltaic solar cells.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a testing fixture for photovoltaic solar cells, comprising a support frame and a sliding frame. The sliding frame is slidably mounted inside the support frame and extends to the outside of the support frame. A support plate is mounted at the top of the sliding frame. A movable plate is slidably mounted at the top of the support plate. A sliding plate is slidably mounted at the top of the movable plate. A connecting frame is provided outside the movable plate on one side of the sliding plate. Clamping frames are symmetrically mounted on the outer wall of the connecting frame. A rotating shaft is mounted on the outer wall of the connecting frame near the sliding plate. Movable seats are symmetrically mounted on the outer walls of the clamping frames. A driving arm is movably mounted on the outer wall of each movable seat. A support shaft is mounted on the outer wall of each driving arm near the support shaft. The moving base is movably connected to the drive arm via a support shaft. A transmission arm is movably mounted on the outer wall of the drive arm. A hinge shaft is mounted on the outer wall of the transmission arm near the drive arm, and the drive arm is movably connected to the transmission arm via the hinge shaft. Fixed seats are symmetrically mounted on the outer wall of the clamping frame on one side of the transmission arm. A movable shaft is mounted between the two sides of the fixed seat. A drive sleeve is symmetrically and movably fitted on the surface of the movable shaft. A limit shaft is mounted between the two sides of the drive sleeve, and the limit shaft is connected to the transmission arm. A clamping arm is mounted at the bottom end of the drive sleeve. A first electric push rod is movably mounted inside the clamping frame on one side of the hinge shaft, and the output end of the first electric push rod is connected to the hinge shaft. Multiple sets of electric suction cups with equal spacing are symmetrically mounted at the bottom end of the clamping frame.

[0008] Preferably, limit rails are symmetrically installed on the top of the support plate below the movable plate, and limit blocks are slidably installed on the top of each limit rail, and the limit blocks are connected to the movable plate. A second electric push rod is installed on the top of the support plate between the two sides of the limit rail, and the output end of the second electric push rod is connected to the movable plate.

[0009] Preferably, slide rails are symmetrically installed on the top of the movable plate below the sliding plate, and sliders are slidably installed on the top of each slide rail, with the sliders connected to the sliding plate.

[0010] Preferably, a third electric push rod is installed at the top of the movable plate between the two sides of the slide rail, and the output end of the third electric push rod is connected to the slide plate. A servo motor is installed at the top of the slide plate.

[0011] Preferably, a worm gear is installed at the output end of the servo motor, and a power shaft is movably installed at the top of the sliding plate below the worm gear.

[0012] Preferably, a worm wheel is fitted on the surface of the power shaft near the worm, and the worm wheel meshes with the worm, and the power shaft is connected to the rotating shaft.

[0013] Preferably, stepper motors are symmetrically installed inside the support frame, and each stepper motor has a threaded rod installed at its output end. Each threaded rod has a threaded sleeve fitted on its surface, and a drive plate is installed between the two sides of the threaded sleeve, and the drive plate is connected to the sliding frame.

[0014] Preferably, a control panel is installed on the outer wall of the support frame, and the output end of the control panel is electrically connected to the input ends of the stepper motor, the first electric push rod, the second electric push rod, the third electric push rod, the servo motor, and the electric suction cup.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the testing fixture not only realizes the stable clamping of photovoltaic solar cells at multiple positions, which facilitates convenient multi-level fixing and limiting of photovoltaic solar cells, but also facilitates convenient multi-level adjustment of the testing position of photovoltaic solar cells, and increases the testing range of photovoltaic solar cells.

[0016] (1) The control panel opens multiple sets of electric suction cups to facilitate the suction of photovoltaic solar cells. The first electric push rod drives the transmission arm to rotate via the hinge shaft. At the same time, the hinge shaft drives the drive arm to rotate around the support shaft. The movable seat supports the support shaft to facilitate the drive arm to limit the transmission arm. The transmission arm drives the drive sleeve to rotate around the movable shaft via the limit shaft. The drive sleeve drives the clamping arm to rotate, so that the four clamping arms can easily lift the photovoltaic solar cells and secure them stably. The servo motor drives the power shaft to rotate. The force shaft drives the rotating shaft to rotate, the rotating shaft drives the connecting frame to rotate, and the connecting frame drives the clamping frame to rotate. This facilitates the movement of the clamped photovoltaic solar cell to one side of the testing device, making it easier to test the photovoltaic solar cell. At the same time, multiple electric suction cups and the first electric push rod on one side of another clamping frame are opened to facilitate the re-clamping of the photovoltaic solar cell. This achieves stable clamping of the photovoltaic solar cell in multiple positions by the testing fixture, facilitates convenient multi-level fixing and limiting of the photovoltaic solar cell, and improves the clamping stability of the photovoltaic solar cell by the testing fixture.

[0017] (2) The second electric push rod drives the moving plate to move, the moving plate drives the sliding plate, connecting frame, rotating shaft and clamping frame to move, the third electric push rod drives the sliding plate to move, so as to facilitate the convenient position adjustment of the sliding plate, connecting frame and rotating shaft. The servo motor drives the worm to rotate, the worm to rotate the worm wheel, the worm wheel to rotate the power shaft, the power shaft to rotate the rotating shaft, the rotating shaft to rotate the connecting frame, and the connecting frame to facilitate the rotation of the two sets of clamping frames and the clamped photovoltaic solar cells. This realizes the convenient multi-level adjustment of the detection position of the photovoltaic solar cells by the detection fixture, facilitates the convenient replacement of the photovoltaic solar cells after the detection is completed, and improves the efficiency of photovoltaic solar cell detection.

[0018] (3) The stepper motor drives the threaded rod to rotate, the threaded rod drives the threaded sleeve to move, the two sets of threaded sleeves drive the drive plate to move, the drive plate drives the sliding frame to move, and the sliding frame drives the support plate, the moving plate, the sliding plate, the connecting frame, the rotating shaft, the clamping frame and the photovoltaic solar cell to conveniently adjust the height of the photovoltaic solar cell, so as to facilitate the convenient adjustment of the detection height of the photovoltaic solar cell. This realizes the convenient adjustment of the detection height of the photovoltaic solar cell by the detection fixture, increases the detection range of the photovoltaic solar cell by the detection fixture, and improves the convenience of the detection of the photovoltaic solar cell. Attached Figure Description

[0019] Figure 1 This is a front view structural diagram of the present utility model;

[0020] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 3 This is a three-dimensional structural diagram of the stepper motor of this utility model;

[0022] Figure 4 This is a three-dimensional structural diagram of the support frame of this utility model;

[0023] Figure 5 This is a three-dimensional structural diagram of the power shaft of this utility model;

[0024] Figure 6 This is a three-dimensional structural diagram of the clamping frame of this utility model;

[0025] Figure 7 This is a three-dimensional structural diagram of the clamping arm of this utility model.

[0026] In the diagram: 1. Support frame; 2. Sliding frame; 3. Support plate; 4. Moving plate; 5. Sliding plate; 6. Connecting frame; 7. Rotating shaft; 8. Clamping frame; 9. Control panel; 10. Movable seat; 11. Support shaft; 12. Drive arm; 13. Hinge shaft; 14. First electric push rod; 15. Fixed seat; 16. Movable shaft; 17. Limiting shaft; 18. Drive sleeve; 19. Clamping arm; 20. Transmission arm; 21. Electric suction cup; 22. Second electric push rod; 23. Limiting rail; 24. Limiting block; 25. Third electric push rod; 26. Slide rail; 27. Slider; 28. Servo motor; 29. ​​Worm gear; 30. Worm wheel; 31. Power shaft; 32. Stepper motor; 33. Threaded sleeve; 34. Threaded rod; 35. Drive plate. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0028] Please see Figure 1-7 This utility model provides an embodiment of a testing fixture for photovoltaic solar cells, comprising a support frame 1 and a sliding frame 2. The sliding frame 2 is slidably mounted inside the support frame 1 and extends to the outside of the support frame 1. A support plate 3 is mounted on the top of the sliding frame 2, a movable plate 4 is slidably mounted on the top of the support plate 3, and a sliding plate 5 is slidably mounted on the top of the movable plate 4. A connecting frame 6 is provided on the outside of the movable plate 4 on one side of the sliding plate 5. Clamping frames 8 are symmetrically mounted on the outer wall of the connecting frame 6. A rotating shaft 7 is mounted on the outer wall of the connecting frame 6 near the sliding plate 5. Movable seats 10 are symmetrically mounted on the outer walls of the clamping frames 8. A drive arm 12 is movably mounted on the outer wall of each movable seat 10. A support shaft 11 is mounted on the outer wall of each drive arm 12 near the support shaft 11, and the movable seat 10 is connected to the drive arm 12 via the support shaft 11. The drive arm 12 is movably connected to the outer wall of the drive arm 12, and the outer wall of the drive arm 20 near the drive arm 12 is equipped with a hinge shaft 13. The drive arm 12 is movably connected to the drive arm 20 through the hinge shaft 13. The outer wall of the clamping frame 8 on one side of the drive arm 20 is symmetrically equipped with a fixed seat 15. The two sides of the fixed seat 15 are equipped with a movable shaft 16. The surface of the movable shaft 16 is symmetrically fitted with a drive sleeve 18. The two sides of the drive sleeve 18 are equipped with a limit shaft 17, and the limit shaft 17 is connected to the drive arm 20. The bottom end of the drive sleeve 18 is equipped with a clamping arm 19. The clamping frame 8 on one side of the hinge shaft 13 is movably equipped with a first electric push rod 14. The output end of the first electric push rod 14 is connected to the hinge shaft 13. The bottom end of the clamping frame 8 is symmetrically equipped with multiple sets of equally spaced electric suction cups 21.

[0029] The control panel 9 activates two sets of stepper motors 32 to facilitate the movement of the sliding frame 2. The sliding frame 2 then moves the moving plate 4, sliding plate 5, connecting frame 6, rotating shaft 7, clamping frame 8, control panel 9, movable seat 10, multiple sets of electric suction cups 21, and clamping arm 19 to one side of the photovoltaic solar cell. The control panel 9 activates the multiple sets of electric suction cups 21 to facilitate the suction of the photovoltaic solar cell. The control panel 9 also activates two sets of first electric push rods 14, which, in the movable position of the clamping frame 8... Under dynamic support, the first electric push rod 14 drives the transmission arm 20 to rotate via the hinge shaft 13. Simultaneously, the hinge shaft 13 drives the drive arm 12 to rotate around the support shaft 11. The movable seat 10 supports the support shaft 11, facilitating the drive arm 12's limiting support of the transmission arm 20. The transmission arm 20 drives the drive sleeve 18 to rotate around the movable shaft 16 via the limiting shaft 17. The drive sleeve 18 drives the clamping arms 19 to rotate, allowing the four sets of clamping arms 19 to easily lift and hold the photovoltaic solar cells, thus facilitating the processing of the photovoltaic solar cells. The system features convenient and stable clamping and fixing. The control panel 9 activates the servo motor 28, which drives the power shaft 31 to rotate. The power shaft 31 then drives the rotating shaft 7, which in turn drives the connecting frame 6. The connecting frame 6 then drives the clamping frame 8, allowing one set of clamping frames 8 to move the clamped photovoltaic solar cells to one side of the testing device for inspection. Simultaneously, multiple sets of electric suction cups 21 and the first electric push rod 14 on one side of another set of clamping frames 8 are activated to further clamp the photovoltaic solar cells. After the photovoltaic solar cells on one set of clamping frames 8 have been inspected, the control panel 9 is activated again to activate the servo motor 28, which then moves the photovoltaic solar cells clamped on the other set of clamping frames 8 to one side of the testing device for further inspection. This system achieves stable multi-position support for the photovoltaic solar cells, facilitating convenient multi-level fixing and limiting of the photovoltaic solar cells, and improving the clamping stability of the testing fixture.

[0030] A limiting rail 23 is symmetrically installed on the top of the support plate 3 below the movable plate 4. A limiting block 24 is slidably installed on the top of each limiting rail 23, and the limiting block 24 is connected to the movable plate 4. A second electric push rod 22 is installed on the top of the support plate 3 between the two sides of the limiting rail 23, and the output end of the second electric push rod 22 is connected to the movable plate 4. A slide rail 26 is symmetrically installed on the top of the movable plate 4 below the sliding plate 5. A slider 27 is slidably installed on the top of each slide rail 26, and the slider 27 is connected to the sliding plate 5. A third electric push rod 25 is installed on the top of the movable plate 4 between the two sides of the slide rail 26, and the output end of the third electric push rod 25 is connected to the slide plate 5. A servo motor 28 is installed on the top of the slide plate 5, and a worm gear 29 is installed on the output end of the servo motor 28. A power shaft 31 is movably installed on the top of the slide plate 5 below the worm gear 29. A worm wheel 30 is fitted on the surface of the power shaft 31 near the worm gear 29, and the worm wheel 30 meshes with the worm gear 29. The power shaft 31 is connected to the rotating shaft 7.

[0031] Operating control panel 9 activates the second electric push rod 22. Supported by support plate 3, the second electric push rod 22 moves the moving plate 4. Limit block 24 slides on the surface of limit rail 23 to provide sliding support for the moving plate 4. The moving plate 4 moves the sliding plate 5, connecting frame 6, rotating shaft 7, and clamping frame 8. Operating control panel 9 activates the third electric push rod 25. Supported by the moving plate 4, the third electric push rod 25 moves the sliding plate 5. Slider 27 slides on the surface of slide rail 26 to provide sliding support for the sliding plate 5, facilitating convenient position adjustment of the sliding plate 5, connecting frame 6, and rotating shaft 7. Operating control panel 9 activates the servo motor. 28. Supported by the sliding plate 5, the servo motor 28 drives the worm gear 29 to rotate. Under the meshing of the worm gear 29 and the worm wheel 30, the worm gear 29 drives the worm wheel 30 to rotate, and the worm wheel 30 drives the power shaft 31 to rotate. The sliding plate 5 provides movable support for the power shaft 31, and the power shaft 31 drives the rotating shaft 7 to rotate. The rotating shaft 7 drives the connecting frame 6 to rotate, and the connecting frame 6 drives the two sets of clamping frames 8 and the clamped photovoltaic solar cells to rotate conveniently. This realizes convenient multi-level adjustment of the inspection position of the photovoltaic solar cells by the inspection fixture, facilitates the convenient replacement of the inspected photovoltaic solar cells, and improves the efficiency of photovoltaic solar cell inspection.

[0032] Stepper motors 32 are symmetrically installed inside the support frame 1. Each output end of the stepper motor 32 is equipped with a threaded rod 34. Each threaded rod 34 is fitted with a threaded sleeve 33. A drive plate 35 is installed between the two sides of the threaded sleeve 33. The drive plate 35 is connected to the sliding frame 2. A control panel 9 is installed on the outer wall of the support frame 1. The output end of the control panel 9 is electrically connected to the input ends of the stepper motor 32, the first electric push rod 14, the second electric push rod 22, the third electric push rod 25, the servo motor 28, and the electric suction cup 21.

[0033] When it is necessary to adjust the height of the photovoltaic solar cell inspection, operate the control panel 9 to turn on the two sets of stepper motors 32. Under the support of the support frame 1, the stepper motors 32 drive the threaded rod 34 to rotate. With the threaded connection between the threaded rod 34 and the threaded sleeve 33, the threaded rod 34 drives the threaded sleeve 33 to move. The two sets of threaded sleeves 33 drive the drive plate 35 to move. The drive plate 35 drives the sliding frame 2 to move. The sliding frame 2 drives the support plate 3, the moving plate 4, the sliding plate 5, the connecting frame 6, the rotating shaft 7, the clamping frame 8, and the photovoltaic solar cell for convenient height adjustment. This facilitates the convenient adjustment of the inspection height of the photovoltaic solar cell, realizes the convenient adjustment of the inspection height of the inspection fixture for the photovoltaic solar cell, increases the inspection range of the inspection fixture for the photovoltaic solar cell, and improves the convenience of photovoltaic solar cell inspection.

[0034] In this embodiment of the application, the control panel 9 is operated to open multiple sets of electric suction cups 21 to facilitate the suction of photovoltaic solar cells. The first electric push rod 14 drives the transmission arm 20 to rotate via the hinge shaft 13. At the same time, the hinge shaft 13 drives the drive arm 12 to rotate around the support shaft 11. The movable seat 10 supports the support shaft 11 to facilitate the drive arm 12 to provide limiting support for the transmission arm 20. The transmission arm 20 drives the drive sleeve 18 to rotate around the movable shaft 16 via the limiting shaft 17. The drive sleeve 18 drives the clamping arm 19. The rotation facilitates the convenient lifting and clamping of the photovoltaic solar cells by the four sets of clamping arms 19, ensuring stable and convenient clamping. The servo motor 28 drives the power shaft 31 to rotate, which in turn drives the rotating shaft 7. The rotating shaft 7 then drives the connecting frame 6, which in turn drives the clamping frame 8. This allows one set of clamping frames 8 to move the clamped photovoltaic solar cells to one side of the testing device for convenient testing. Simultaneously, multiple electric suction cups 21 on one side of another set of clamping frames 8 are opened, connecting with the first... Electric push rod 14 facilitates the re-clamping of photovoltaic solar cells. Second electric push rod 22 moves the moving plate 4, which in turn moves the sliding plate 5, connecting frame 6, rotating shaft 7, and clamping frame 8. Third electric push rod 25 moves the sliding plate 5, facilitating convenient position adjustment of the sliding plate 5, connecting frame 6, and rotating shaft 7. Servo motor 28 drives worm gear 29 to rotate, which in turn drives worm wheel 30 to rotate. Worm wheel 30 drives power shaft 31 to rotate, which in turn drives rotating shaft 7 to rotate, which in turn drives connecting frame 6. The rotating connecting frame 6 drives the two sets of clamping frames 8 and the clamped photovoltaic solar cells to rotate conveniently. The stepper motor 32 drives the threaded rod 34 to rotate, the threaded rod 34 drives the threaded sleeve 33 to move, the two sets of threaded sleeves 33 drive the drive plate 35 to move, the drive plate 35 drives the sliding frame 2 to move, and the sliding frame 2 drives the support plate 3, the moving plate 4, the sliding plate 5, the connecting frame 6, the rotating shaft 7, the clamping frame 8 and the photovoltaic solar cells to adjust their height conveniently, so as to facilitate the convenient adjustment of the detection height of the photovoltaic solar cells and complete the use of the detection fixture.

Claims

1. A testing fixture for photovoltaic solar cells, characterized in that: The system includes a support frame (1) and a sliding frame (2). The sliding frame (2) is slidably installed inside the support frame (1) and extends to the outside of the support frame (1). A support plate (3) is installed at the top of the sliding frame (2). A movable plate (4) is slidably installed at the top of the support plate (3). A sliding plate (5) is slidably installed at the top of the movable plate (4). A connecting frame (6) is provided outside the movable plate (4) on one side of the sliding plate (5). The outer wall of the connecting frame (6) is symmetrically arranged. A clamping frame (8) is installed. A rotating shaft (7) is installed on the outer wall of the connecting frame (6) near the sliding plate (5). Movable seats (10) are symmetrically installed on the outer wall of each clamping frame (8). A drive arm (12) is movably installed on the outer wall of each movable seat (10). A support shaft (11) is installed on the outer wall of each drive arm (12) near the support shaft (11). The movable seat (10) is movably connected to the drive arm (12) through the support shaft (11). A transmission arm (20) is movably mounted on the outer wall of each transmission arm (20). A hinge shaft (13) is mounted on the outer wall of each transmission arm (20) near the drive arm (12). The drive arm (12) is movably connected to the transmission arm (20) via the hinge shaft (13). Fixed seats (15) are symmetrically mounted on the outer wall of the clamping frame (8) on one side of the transmission arm (20). A movable shaft (16) is mounted between the two sides of the fixed seat (15). A drive sleeve is symmetrically and movably fitted on the surface of the movable shaft (16). 18) Limiting shafts (17) are installed between both sides of the drive sleeve (18), and the limiting shafts (17) are connected to the transmission arm (20). A clamping arm (19) is installed at the bottom of the drive sleeve (18). A first electric push rod (14) is movably installed inside the clamping frame (8) on one side of the hinge shaft (13), and the output end of the first electric push rod (14) is connected to the hinge shaft (13). Multiple sets of electric suction cups (21) with equal spacing are symmetrically installed at the bottom of the clamping frame (8).

2. The testing fixture for photovoltaic solar cells according to claim 1, characterized in that: The top of the support plate (3) below the movable plate (4) is symmetrically equipped with limiting rails (23). The top of each limiting rail (23) is slidably equipped with a limiting block (24), and the limiting block (24) is connected to the movable plate (4). The top of the support plate (3) between the two sides of the limiting rail (23) is equipped with a second electric push rod (22), and the output end of the second electric push rod (22) is connected to the movable plate (4).

3. The testing fixture for photovoltaic solar cells according to claim 1, characterized in that: The top of the movable plate (4) below the sliding plate (5) is symmetrically equipped with slide rails (26), and the top of each slide rail (26) is slidably equipped with a slider (27), and the slider (27) is connected to the sliding plate (5).

4. The testing fixture for photovoltaic solar cells according to claim 3, characterized in that: A third electric push rod (25) is installed at the top of the movable plate (4) between the two sides of the slide rail (26), and the output end of the third electric push rod (25) is connected to the slide plate (5). A servo motor (28) is installed at the top of the slide plate (5).

5. The testing fixture for photovoltaic solar cells according to claim 4, characterized in that: The output end of the servo motor (28) is equipped with a worm gear (29), and a power shaft (31) is movably installed on the top of the sliding plate (5) below the worm gear (29).

6. The testing fixture for photovoltaic solar cells according to claim 5, characterized in that: The power shaft (31) has a worm wheel (30) fitted on the surface near the worm (29), and the worm wheel (30) meshes with the worm (29), and the power shaft (31) is connected to the rotating shaft (7).

7. The testing fixture for photovoltaic solar cells according to claim 1, characterized in that: The support frame (1) is symmetrically equipped with stepper motors (32). Each stepper motor (32) has a threaded rod (34) installed at its output end. Each threaded rod (34) has a threaded sleeve (33) fitted on its surface. A drive plate (35) is installed between the two sides of the threaded sleeve (33), and the drive plate (35) is connected to the sliding frame (2).

8. The testing fixture for photovoltaic solar cells according to claim 1, characterized in that: A control panel (9) is installed on the outer wall of the support frame (1), and the output end of the control panel (9) is electrically connected to the input end of the stepper motor (32), the first electric push rod (14), the second electric push rod (22), the third electric push rod (25), the servo motor (28), and the electric suction cup (21).

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