EL test instrument for solar cell module

Abstract

The utility model relates to the technical field of photovoltaic panel detection, and discloses a solar cell module EL test instrument, which comprises a movable base, the upper surface of the movable base is provided with a swing shaft, the top of the swing shaft is fixedly provided with a lifting frame, the surface of the lifting frame is provided with a lifting seat, and a lifting assembly is arranged between the lifting frame and the lifting seat. The surface of the lifting base is rotationally connected with a deflection shaft. According to the utility model, in the test process, the lifting assembly is arranged, the first servo motor is utilized to drive the vertical screw rod to rotate, the lifting seat can be driven to lift and move, the heights of the target plate and the photovoltaic panel can be adjusted, the inclination adjusting assembly is arranged, the second servo motor is utilized to drive the worm to rotate, and the target plate and the photovoltaic panel can be adjusted based on the engagement of the worm and the worm wheel. The target plate and the photovoltaic panel can be driven to incline front and back, and the angle is adjusted, so that the purpose of detecting the photoelectric conversion efficiency of the photovoltaic panel under various illumination angle conditions can be achieved, and the detection result is more comprehensive.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic panel detection, and more specifically to an EL testing instrument for a solar cell assembly. Background Art

[0002] EL testing is a process for detecting internal defects of solar cells or battery modules. It is often used to detect internal defects, hidden cracks, fragments, cold solder joints, broken grids and abnormal phenomena of single cells with different conversion efficiencies in solar cell modules, and is used to identify the quality of solar cell modules.

[0003] When conducting EL test on solar panels, the photoelectric conversion efficiency of photovoltaic panels needs to be tested. When testing them, the usual practice is to place the photovoltaic panels on the wall of a dark room, and then use light of rated brightness to illuminate the photovoltaic panels, and then test the power of the photovoltaic panels to achieve the purpose of testing the photoelectric conversion efficiency. When testing the photoelectric conversion efficiency of photovoltaic panels, usually only the vertical state between the photovoltaic panel and the light source is tested, and the detection range is relatively narrow, which makes it difficult to meet the purpose of comprehensive testing of the photoelectric conversion efficiency of photovoltaic panels under different lighting angles.

[0004] In view of this, the utility model proposes a solar cell assembly EL testing instrument to solve this problem. Utility Model Content

[0005] In order to overcome the above defects of the prior art, the utility model provides an EL testing instrument for a solar cell assembly to solve the problems existing in the above background technology.

[0006] The utility model provides the following technical solutions: a solar cell assembly EL test instrument, comprising a mobile base, a swing shaft is arranged on the upper surface of the mobile base, a lifting frame is fixedly installed on the top of the swing shaft, a lifting seat is arranged on the surface of the lifting frame, a lifting assembly is arranged between the lifting frame and the lifting seat, a deflection shaft is rotatably connected on the surface of the lifting seat, a tilt adjustment assembly is arranged between the lifting seat and the deflection shaft, a target plate is fixedly installed on the surface of the deflection shaft, and a positioning assembly for fixing an external photovoltaic panel is arranged on the surface of the target plate;

[0007] The lifting assembly includes a limiting slide groove opened inside the lifting frame, the lifting seat is slidably connected inside the limiting slide groove, a first servo motor is fixedly installed on the top of the lifting frame, the output shaft of the first servo motor extends into the limiting slide groove and is fixedly installed with a vertical screw rod, and the lifting seat is threadedly connected to the surface of the vertical screw rod;

[0008] The tilt adjustment assembly includes an adjustment box fixedly mounted on the surface of the lifting seat, the deflection shaft and the adjustment box are rotationally connected, a second servo motor is fixedly mounted on the top of the adjustment box, a worm is fixedly mounted on the surface of the output shaft of the second servo motor, a worm wheel is fixedly mounted on the surface of the deflection shaft, and the worm is meshed with the worm wheel.

[0009] Furthermore, the positioning assembly includes two fixing plates symmetrically fixedly installed on the upper and lower ends of the front side of the target plate, the surfaces of the two fixing plates are threadedly connected with positioning screws, the two positioning screws are symmetrical to each other, and the ends of the two positioning screws that are close to each other are rotatably connected with clamping plates, the clamping plates are slidably connected to the surface of the target plate, the photovoltaic panel to be tested is attached to the surface of the target plate, and the photovoltaic panel can be clamped and positioned by rotating the positioning screws and using the two clamping plates.

[0010] Furthermore, a height marking line for marking the height of the lifting seat is provided on the surface of the lifting frame; by providing the height marking line, the height of the target plate and the photovoltaic panel can be marked.

[0011] Furthermore, a first angle marking line is opened on the surface of the adjustment box with the deflection axis as the center, and a first pointer is provided on the end face of the deflection axis, and the position of the first pointer corresponds to the first angle marking line; by setting the first angle marking line, the inclination angle of the target plate and the photovoltaic panel can be marked.

[0012] Furthermore, the swing shaft is rotatably connected to the mobile base, and a horizontal swing assembly is arranged between the mobile base and the swing shaft, and the horizontal swing assembly includes a drive box fixedly mounted on the surface of the mobile base, the swing shaft is rotatably connected to the drive box, a hydraulic rod is embedded on the surface of the drive box, the telescopic end of the hydraulic rod extends to the interior of the drive box and is fixedly mounted with a rack, a gear disk is fixedly mounted on the surface of the swing shaft, and the rack and the gear disk are meshed; by setting up the horizontal swing assembly, the rack is driven to move by the telescopic hydraulic rod, and based on the meshing of the rack and the gear disk, the horizontal angle of the target plate and the photovoltaic panel can be driven to be adjusted, thereby further improving the effect of the EL test.

[0013] Furthermore, a plurality of support guide wheels are equidistantly arranged in a circular array on the surface of the movable base, a turntable is welded to the bottom end of the lifting frame, and the surface of the support guide wheel is in contact with the bottom surface of the turntable; the support guide wheel and the turntable are used to auxiliary support the turntable, which can improve the stability of the swing shaft when it rotates horizontally.

[0014] Furthermore, a second angle marking line is provided on the surface of the turntable, and a second pointer is fixedly installed on the surface of the supporting guide wheel, and the second pointer corresponds to the position of the second angle marking line; by setting the second angle marking line, it is convenient to mark the angle of horizontal rotation of the swing shaft.

[0015] Technical effects and advantages of the utility model:

[0016] 1. The utility model places the photovoltaic panel to be tested on the surface of the target panel, and uses a positioning assembly to clamp and position the photovoltaic panel, and uses a rated light source to irradiate the photovoltaic panel in a dark room to test the photoelectric conversion efficiency of the photovoltaic panel. During the test, a lifting assembly is set up, and a first servo motor is used to drive the vertical screw to rotate, which can drive the lifting seat to move up and down, and adjust the height of the target panel and the photovoltaic panel. By setting a tilt adjustment assembly, a second servo motor is used to drive the worm to rotate. Based on the meshing of the worm and the worm wheel, the target panel and the photovoltaic panel can be driven to tilt forward and backward, and the angle can be adjusted, thereby meeting the purpose of testing the photoelectric conversion efficiency of the photovoltaic panel under various lighting angles, and the test results are more comprehensive.

[0017] 2. The utility model can mark the height of the target plate and the photovoltaic panel by setting a height identification line; can mark the inclination angle of the target plate and the photovoltaic panel by setting a first angle identification line; and can adjust the horizontal angle of the target plate and the photovoltaic panel by setting a horizontal swing component and utilizing the extension and retraction of the hydraulic rod to move the rack, based on the meshing of the rack and the gear disc, thereby further improving the effect of the EL test.

[0018] 3. The utility model supports the guide wheel and the turntable, and utilizes the support guide wheel to assist in supporting the turntable, which can improve the stability of the swing shaft during horizontal rotation; by setting the second angle marking line, it is convenient to mark the angle of horizontal rotation of the swing shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the utility model from perspective 1;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from the second viewing angle;

[0021] Figure 3 for Figure 2 The enlarged structural diagram at A in the middle;

[0022] Figure 4 This is a schematic diagram of the cutaway structure of the adjustment box of the utility model;

[0023] Figure 5 It is a schematic diagram of the top-sectional structure of the drive box of the utility model.

[0024] The accompanying drawings are marked as follows: 1. movable base; 2. swing axis; 3. lifting frame; 4. lifting seat; 5. deflection axis; 6. target plate; 7. first servo motor; 8. vertical screw; 9. adjustment box; 10. second servo motor; 11. worm; 12. worm wheel; 13. fixed plate; 14. positioning screw; 15. clamping plate; 16. height marking line; 17. first angle marking line; 18. drive box; 19. hydraulic rod; 20. rack; 21. gear disc; 22. support guide wheel; 23. turntable; 24. second angle marking line. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The solar cell module EL testing instrument involved in the present invention is not limited to the various structures recorded in the following embodiments. All other implementations obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0026] Reference Figure 1-5 The utility model provides an EL testing instrument for a solar cell assembly, comprising a mobile base 1, a swing shaft 2 is arranged on the upper surface of the mobile base 1, a lifting frame 3 is fixedly installed on the top of the swing shaft 2, a lifting frame 3 is arranged on the surface of the lifting frame 3, a lifting seat 4 is arranged between the lifting frame 3 and the lifting seat 4, a lifting assembly is arranged, a deflection shaft 5 is rotatably connected to the surface of the lifting seat 4, a tilt adjustment assembly is arranged between the lifting seat 4 and the deflection shaft 5, a target plate 6 is fixedly installed on the surface of the deflection shaft 5, and a positioning assembly for fixing an external photovoltaic panel is arranged on the surface of the target plate 6.

[0027] The positioning assembly includes two fixing plates 13 symmetrically fixedly installed at the upper and lower ends of the front side of the target plate 6. The surfaces of the two fixing plates 13 are threadedly connected with positioning screws 14. The two positioning screws 14 are symmetrical to each other, and the ends of the two positioning screws 14 that are close to each other are rotatably connected with clamping plates 15. The clamping plates 15 are slidably connected to the surface of the target plate 6.

[0028] When the utility model is in use, the whole instrument is moved and placed inside a darkroom using a mobile base 1, and then the whole instrument is connected to an external mains power supply, a photovoltaic panel to be tested is placed on the surface of a target plate 6, and a clamping plate 15 is used to clamp and position the photovoltaic panel, a rated light source is used to illuminate the photovoltaic panel inside the darkroom, and an external instrument is used to test the photoelectric conversion efficiency of the photovoltaic panel.

[0029] The lifting assembly includes a limiting slide groove opened inside the lifting frame 3, and the lifting seat 4 is slidably connected inside the limiting slide groove. A first servo motor 7 is fixedly installed on the top of the lifting frame 3. The output shaft of the first servo motor 7 extends to the inside of the limiting slide groove and is fixedly installed with a vertical screw rod 8. The lifting seat 4 is threadedly connected to the surface of the vertical screw rod 8.

[0030] Furthermore, during the test, by setting up a lifting assembly and utilizing the first servo motor 7 to drive the vertical screw rod 8 to rotate, the lifting seat 4 can be driven to move up and down to adjust the height of the target plate 6 and the photovoltaic panel.

[0031] A height marking line 16 for marking the height of the lifting base 4 is provided on the surface of the lifting frame 3 .

[0032] By providing the height marking line 16 , the heights of the target plate 6 and the photovoltaic panel can be marked.

[0033] The tilt adjustment assembly includes an adjustment box 9 fixedly mounted on the surface of the lifting seat 4, the deflection shaft 5 and the adjustment box 9 are rotationally connected, a second servo motor 10 is fixedly mounted on the top of the adjustment box 9, a worm 11 is fixedly mounted on the surface of the output shaft of the second servo motor 10, and a worm wheel 12 is fixedly mounted on the surface of the deflection shaft 5, and the worm 11 is meshed with the worm wheel 12.

[0034] Furthermore, during the test, by setting a tilt adjustment component and utilizing the second servo motor 10 to drive the worm 11 to rotate, based on the engagement of the worm 11 with the worm wheel 12, the target plate 6 and the photovoltaic panel can be driven to tilt forward and backward, and the angle can be adjusted, thereby meeting the purpose of testing the photoelectric conversion efficiency of the photovoltaic panel under a variety of lighting angles, and the test results are more comprehensive.

[0035] A first angle marking line 17 is formed on the surface of the adjustment box 9 with the deflection axis 5 as the center. A first pointer is provided on the end surface of the deflection axis 5 . The first pointer corresponds to the position of the first angle marking line 17 .

[0036] By providing the first angle identification line 17 , the inclination angles of the target plate 6 and the photovoltaic panel can be marked.

[0037] The swing shaft 2 is rotatably connected to the moving base 1 , and a horizontal swing component is provided between the moving base 1 and the swing shaft 2 .

[0038] The horizontal swing assembly includes a drive box 18 fixedly mounted on the surface of the mobile base 1, the swing shaft 2 is rotatably connected to the drive box 18, a hydraulic rod 19 is embedded on the surface of the drive box 18, the telescopic end of the hydraulic rod 19 extends to the interior of the drive box 18 and is fixedly mounted with a rack 20, a toothed disc 21 is fixedly mounted on the surface of the swing shaft 2, and the rack 20 and the toothed disc 21 are meshed.

[0039] By setting a horizontal swing component, the rack 20 is driven to move by the extension and retraction of the hydraulic rod 19. Based on the engagement of the rack 20 and the toothed disc 21, the horizontal angles of the target plate 6 and the photovoltaic panel can be adjusted, further improving the effect of the EL test.

[0040] The surface of the mobile base 1 is provided with a plurality of supporting guide wheels 22 in a circular array and at equal intervals. A turntable 23 is welded to the bottom end of the lifting frame 3 , and the surface of the supporting guide wheel 22 is in contact with the bottom surface of the turntable 23 .

[0041] By providing the support guide wheel 22 and the turntable 23 and using the support guide wheel 22 to assist in supporting the turntable 23 , the stability of the swing shaft 2 during horizontal rotation can be improved.

[0042] A second angle marking line 24 is formed on the surface of the turntable 23 , and a second pointer is fixedly mounted on the surface of the supporting guide wheel 22 . The second pointer corresponds to the position of the second angle marking line 24 .

[0043] By providing the second angle marking line 24 , it is convenient to mark the horizontal rotation angle of the swing shaft 2 .

[0044] Finally, it should be noted that the drawings of the embodiments disclosed in the present invention only involve structures related to the embodiments disclosed in the present invention, and other structures may refer to the usual design. In the absence of conflict, the same embodiment and different embodiments of the present invention may be combined with each other.

Claims

1. A solar cell module EL testing instrument, comprising a mobile base (1), characterized in that: The upper surface of the mobile base (1) is provided with a swing shaft (2), a lifting frame (3) is fixedly mounted on the top of the swing shaft (2), a lifting seat (4) is arranged on the surface of the lifting frame (3), a lifting assembly is arranged between the lifting frame (3) and the lifting seat (4), a deflection shaft (5) is rotatably connected to the surface of the lifting seat (4), a tilt adjustment assembly is arranged between the lifting seat (4) and the deflection shaft (5), a target plate (6) is fixedly mounted on the surface of the deflection shaft (5), and a positioning assembly for fixing an external photovoltaic panel is arranged on the surface of the target plate (6); The lifting assembly comprises a limiting slide groove provided inside the lifting frame (3), the lifting seat (4) is slidably connected inside the limiting slide groove, a first servo motor (7) is fixedly mounted on the top of the lifting frame (3), an output shaft of the first servo motor (7) extends into the limiting slide groove and is fixedly mounted with a vertical screw rod (8), and the lifting seat (4) is threadedly connected to the surface of the vertical screw rod (8); The tilt adjustment assembly comprises an adjustment box (9) fixedly mounted on the surface of the lifting seat (4); the deflection shaft (5) and the adjustment box (9) are rotationally connected; a second servo motor (10) is fixedly mounted on the top of the adjustment box (9); a worm (11) is fixedly mounted on the surface of the output shaft of the second servo motor (10); a worm wheel (12) is fixedly mounted on the surface of the deflection shaft (5); and the worm (11) is meshed with the worm wheel (12).

2. The solar cell module EL testing instrument according to claim 1, characterized in that: The positioning assembly comprises two fixing plates (13) symmetrically fixedly mounted at the upper and lower ends of the front face of the target plate (6); the surfaces of the two fixing plates (13) are both threadedly connected with positioning screws (14); the two positioning screws (14) are symmetrical to each other, and the adjacent ends of the two positioning screws (14) are both rotatably connected with a clamping plate (15); the clamping plate (15) is slidably connected to the surface of the target plate (6).

3. The solar cell module EL testing instrument according to claim 1, characterized in that: The surface of the lifting frame (3) is provided with a height marking line (16) for marking the height of the lifting seat (4).

4. The solar cell module EL testing instrument according to claim 1, characterized in that: The surface of the adjustment box (9) is provided with a first angle identification line (17) with the deflection axis (5) as the center, and the end surface of the deflection axis (5) is provided with a first pointer, the first pointer corresponding to the position of the first angle identification line (17).

5. The solar cell module EL testing instrument according to claim 1, characterized in that: The swing shaft (2) is rotatably connected to the movable base (1), and a horizontal swing component is provided between the movable base (1) and the swing shaft (2).

6. The solar cell module EL testing instrument according to claim 5, characterized in that: The horizontal swing assembly comprises a drive box (18) fixedly mounted on the surface of a mobile base (1), a swing shaft (2) being rotatably connected to the drive box (18), a hydraulic rod (19) being embedded on the surface of the drive box (18), a telescopic end of the hydraulic rod (19) extending into the interior of the drive box (18) and fixedly mounted with a rack (20), a toothed disc (21) being fixedly mounted on the surface of the swing shaft (2), and the rack (20) and the toothed disc (21) being meshed with each other.

7. The solar cell module EL testing instrument according to claim 1, characterized in that: The surface of the mobile base (1) is provided with a plurality of support guide wheels (22) arranged at equal intervals in a circular array, a turntable (23) is welded to the bottom end of the lifting frame (3), and the surface of the support guide wheel (22) is in contact with the bottom surface of the turntable (23).

8. The solar cell module EL testing instrument according to claim 7, characterized in that: A second angle identification line (24) is provided on the surface of the rotating disk (23), and a second pointer is fixedly mounted on the surface of the supporting guide wheel (22), the second pointer corresponding to the position of the second angle identification line (24).

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