EL testing device of photovoltaic panel

Abstract

The utility model discloses an EL testing device for a photovoltaic panel, which belongs to the field of photovoltaic panel detection devices and comprises a frame body, stand columns are arranged at four corners of the bottom end of the frame body, a conveying belt is arranged in the frame body, a supporting frame is fixedly mounted at the top end of the frame body, and two mounting plates which are symmetrically distributed are fixedly mounted at the top end of the frame body. A correction assembly is arranged between the two mounting plates; a mounting box is fixedly mounted at the top end of the supporting frame, a lifting column is slidably mounted in the mounting box, the bottom end of the lifting column slidably penetrates through the supporting frame, a connecting plate is fixedly mounted at the bottom end of the lifting column, a tester is arranged below the connecting plate, and a top plate is fixedly mounted at the top end of the tester. According to the utility model, through the arrangement of the correction assembly and the cooperation of the air cylinder, the mounting frame and the auxiliary roller, the function of correcting the conveying position of the photovoltaic panel on the conveying belt is achieved, the phenomenon of deviation of the photovoltaic panel during conveying can be avoided, and the follow-up accurate detection of a tester is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of photovoltaic panel detection devices, and more specifically, to an EL test device for photovoltaic panels. Background Art

[0002] A photovoltaic panel is a power generation device that converts solar energy into electrical energy. Its working principle is based on the photovoltaic effect. The solar panel converts sunlight into direct current through solar cells, and then converts the direct current into alternating current for power supply through an inverter. The photovoltaic panel itself does not generate electromagnetic radiation, so it will not cause harm to the human body or pollute the surrounding environment. During the processing and production of photovoltaic modules, it is necessary to perform EL testing on them, that is, to detect internal defects of the modules using the principle of electroluminescence.

[0003] The patent with the application number 202123155708.9 discloses a new type of EL test device, including an EL detector and a conveying device. The conveying device is used to convey the photovoltaic module to be tested; the EL detector includes a housing, an EL camera, and a computer processing system. The EL camera is used to obtain the EL image of the photovoltaic module to be tested. The EL camera is fixed in the middle of the inner top of the housing, and the EL camera is electrically connected to the computer processing system; a sliding component is installed at the inner top of the housing, and several connection contacts are slidably connected to the sliding component. The connection contacts are arranged corresponding to the lead wires of the junction box of the photovoltaic module to be tested; an adjusting component is installed between adjacent two connection contacts. The adjusting component is used to adjust the distance between the two connection contacts. The connection contacts at both ends of the sliding component are respectively connected to the positive and negative poles of the power supply. When the EL test is performed on the photovoltaic module to be tested, this utility model does not require manual connection of the lead wires of the junction box of the photovoltaic module to be tested, improving the efficiency of the EL test of the photovoltaic module.

[0004] For the above-mentioned technology, by adjusting the distance between the two connection contacts through the adjusting component, it is convenient for the device to be docked with the photovoltaic panel. Without manual connection of the lead wires of the junction box of the photovoltaic module to be tested, the efficiency of the EL test of the photovoltaic module is improved. However, this device does not have the function of correcting the position of the photovoltaic module during use, resulting in possible deviation during detection and affecting the accuracy of the test results. Summary of the Utility Model

[0005] In order to solve the above problems, the utility model provides an EL test device for photovoltaic panels, adopting the following technical solutions:

[0006] An EL test device for photovoltaic panels, including a frame body. Columns are provided at the four corners of the bottom end of the frame body. A conveyor belt is arranged inside the frame body. A support frame is fixedly installed at the top end of the frame body. Two symmetrically distributed mounting plates are fixedly installed at the top end of the frame body, and a correction component is arranged between the two mounting plates;

[0007] A mounting box is fixedly installed at the top end of the support frame. A lifting column is slidably installed in the mounting box. The bottom end of the lifting column slidably penetrates the support frame. A connecting plate is fixedly installed at the bottom end of the lifting column. A tester is arranged below the connecting plate. A top plate is fixedly installed at the top end of the tester. A fixing component is arranged between the top end of the top plate and the bottom end of the connecting plate. A lifting component is arranged between the lifting column and the mounting box;

[0008] A support plate in an inverted "L" shape is fixedly installed on one side of the frame body. A support box is fixedly installed at the bottom end of the horizontal section of the support plate. A support block is slidably installed in the support box. The bottom end of the support block slidably penetrates the support box and is fixedly installed with a telescopic rod. A support plate is fixedly installed at the bottom end of the telescopic rod. An adsorption component is arranged at the bottom end of the support plate. A driving component is arranged between the support block and the support box. A collection box is arranged on the side of the frame body close to the support plate.

[0009] By adopting the above technical solution, when the device is in use, the staff places the photovoltaic panel on the conveyor belt arranged inside the frame body. The photovoltaic panel is conveyed to the lower part of the support frame through the conveyor belt. When the photovoltaic panel is being conveyed on the conveyor belt, the position of the photovoltaic panel on the conveyor belt is adjusted through the calibration component, and the photovoltaic panel can be restricted, which helps to avoid the phenomenon of the photovoltaic panel shifting during transportation and facilitates the subsequent accurate scanning of the device. When the photovoltaic panel moves to the lower part of the support frame, the tester can scan and detect the photovoltaic panel. When the device is in use, the distance between the tester and the photovoltaic panel can be adjusted through the lifting component, which is convenient for the device to accurately scan. Moreover, the tester is connected to the connecting plate through the fixing component, which is convenient for the staff to disassemble and repair the tester later. When the tester scans and detects defective products, the defective products are conveyed to the lower part of the support box through the conveyor belt. Then, the telescopic rod drives the adsorption component to descend and contact the top of the defective product. The defective product is adsorbed through the adsorption component, which can clamp the defective product. After the defective product is adsorbed, the telescopic rod drives the defective product to rise. At the same time, the driving component drives the support block to move the defective product to the upper part of the collection box. Then, the telescopic rod drives the defective product to move into the collection box, which can select and collect the defective products.

[0010] Furthermore, the calibration component includes cylinders arranged on the opposite sides of two mounting plates. The piston shafts of the two cylinders slidably penetrate the mounting plates on the same side. The ends of the piston shafts of the two cylinders are both fixedly installed with mounting frames. A linear array of auxiliary rollers is rotatably installed in each of the two mounting frames. Two symmetrically distributed sliding rods are fixedly installed on the opposite sides of the two mounting frames. One end of the two sliding rods in the same group away from the same group of mounting frames slidably penetrates the mounting plates in the same group.

[0011] By adopting the above technical solution, after the staff place the photovoltaic panel on the conveyor belt, the photovoltaic panel is conveyed by the conveyor belt. Subsequently, the cylinder drives the same group of installation frames and auxiliary rollers to contact the opposite side of the photovoltaic panel synchronously. Through the cooperation of the two groups of auxiliary rollers, it plays a role in correcting the conveying position of the photovoltaic panel on the conveyor belt, helps to avoid the phenomenon of the photovoltaic panel shifting during conveying, facilitates the subsequent precise scanning of the equipment, and the auxiliary rollers are rotatably installed on the installation frame, which can not only correct the conveying position of the photovoltaic panel but also does not affect the subsequent movement of the photovoltaic panel.

[0012] Furthermore, the fixing component includes a rubber block fixedly installed at the top end of the top plate. A groove matching the rubber block is opened at the bottom end of the connecting plate. Two symmetrically distributed bolts are provided at the top end of the connecting plate, and the bottom ends of both bolts penetrate through the connecting plate. A screw groove matching the bolt is opened at the top end of the top plate.

[0013] By adopting the above technical solution, the staff place the rubber block installed at the top end of the top plate into the groove opened at the bottom end of the connecting plate, which plays a role in positioning the tester. Subsequently, the staff pass the bolts through the connecting plate and thread them with the screw groove opened at the top end of the top plate, which can play a role in fixedly installing the tester. By screwing the bolts and the screw groove, it is convenient for the staff to disassemble and repair the tester subsequently.

[0014] Furthermore, the lifting component includes a second screw rod rotatably installed on the inner wall of the top end of the installation box. The bottom end of the second screw rod extends into the support frame. The top end of the lifting column is sleeved on the side wall of the second screw rod. A driven gear is fixedly sleeved on the side wall of the upper section of the second screw rod. A second reduction motor is fixedly installed in the installation box, and a driving gear is fixedly sleeved on the side wall of the output shaft of the second reduction motor. The driving gear meshes with the driven gear.

[0015] By adopting the above technical solution, the second reduction motor drives the driving gear to rotate, the driving gear drives the driven gear to rotate, the driven gear drives the second screw rod to rotate, thereby playing a role in driving the lifting column to lift and lower. The lifting column drives the tester to lift and lower synchronously, playing a role in adjusting the distance between the tester and the photovoltaic panel, and facilitating the subsequent detection and scanning of the photovoltaic panel by the equipment.

[0016] Furthermore, two "L"-shaped stabilizing rods are fixedly installed on both sides of the lifting column. The top ends of the vertical sections of the two stabilizing rods slide through the support frame vertically, and blocks are fixedly installed on the opposite sides of the top ends of the two stabilizing rods.

[0017] By adopting the above technical solution, when the lifting column ascends and descends, the lifting column drives the stabilizing rod to ascend and descend synchronously. With the cooperation of the stabilizing rod, it helps to prevent the lifting column from rotating synchronously with the second screw rod, which is beneficial to maintaining the stability of the lifting column's ascent and descent. Moreover, a stop block is provided on the side wall of the top end of the stabilizing rod, which helps to prevent the stabilizing rod from sliding out of the support frame and plays a role in restricting the lifting column, thus helping to prevent the lifting column from disengaging from the screw engagement with the second screw rod.

[0018] Furthermore, the adsorption assembly includes four suction cups arranged at the four corners of the bottom end of the support plate. The top ends of the suction cups all penetrate through the support plate. The top ends of two suction cups on the same side are fixedly connected with a first three-way joint. A vacuum pump is fixedly installed at the top end of the support plate, and the top end of the vacuum pump is fixedly connected with a second three-way joint. Connecting pipes are connected between the opposite ends of the two first three-way joints and the second three-way joint.

[0019] By adopting the above technical solution, when the equipment detects defective products, the support plate is driven by the telescopic rod to descend with the suction cups, and the suction cups are brought into contact with the top of the photovoltaic panel. Subsequently, the vacuum pump operates. Then, through the cooperation of the first three-way joint, the second three-way joint and the connecting pipe, the suction force acts on the photovoltaic panel through the suction cups, and thus the suction cups are adsorbed on the top of the photovoltaic panel, which can play a role in clamping the photovoltaic panel.

[0020] Furthermore, the driving assembly includes a first screw rod rotatably installed in the support box. The support block is sleeved on the side wall of the first screw rod. A protective box is fixedly installed on one side of the support box, and a first reduction motor is fixedly installed in the protective box. One end of the first screw rod penetrates through the protective box and is fixedly connected with the end of the output shaft of the first reduction motor. Limit blocks are fixedly installed on both sides of the support block, and limit grooves matching the limit blocks on the same side are formed in the inner wall of the support box.

[0021] By adopting the above technical solution, after the defective photovoltaic panel is adsorbed, the photovoltaic panel is driven to rise by the telescopic rod. Subsequently, the first reduction motor drives the first screw rod to rotate, so that the support block drives the telescopic rod and the defective photovoltaic panel to move synchronously towards the collection box. When the defective photovoltaic panel moves to the collection box and rises, after the telescopic rod drives the support plate and the defective photovoltaic panel to descend synchronously behind the collection box, then the adsorption force of the suction cups on the photovoltaic panel is released, which can play a role in placing the defective photovoltaic panel, and thus achieve the effect of sorting and picking.

[0022] In summary, the present utility model has the following beneficial technical effects:

[0023] (1) In the present utility model, through the arrangement of the calibration component, with the cooperation of the cylinder, the mounting frame and the auxiliary roller, it plays a role in calibrating the conveying position of the photovoltaic panel on the conveyor belt, which helps to avoid the phenomenon of offset of the photovoltaic panel during conveying, facilitating the subsequent precise detection by the tester. Moreover, the auxiliary roller is rotatably mounted on the mounting frame, which can not only play a role in calibrating the conveying position of the photovoltaic panel but also does not affect the subsequent movement of the photovoltaic panel.

[0024] (2) In the present utility model, through the arrangement of the adsorption component, it plays a role in adsorbing and clamping defective products. Subsequently, the driving component drives the adsorption component to move the defective products above the collection box, and then the telescopic rod drives the adsorption component to lower the defective products into the collection box, thus playing a role in sorting.

[0025] (3) In the present utility model, through the arrangement of the lifting component, it plays a role in adjusting the distance between the tester and the top of the photovoltaic panel, facilitating the subsequent scanning and detection of the equipment. Description of the Drawings

[0026] Figure 1 It is a schematic structural diagram of an EL test device for a photovoltaic panel;

[0027] Figure 2 For the present utility model Figure 1 An enlarged view of A in;

[0028] Figure 3 For the present utility model Figure 1 An enlarged view of B in;

[0029] Figure 4 It is a cross-sectional view of the support box and the protective box in the present utility model;

[0030] Figure 5 It is a cross-sectional view of the mounting box, the support frame, the lifting column and the connecting plate in the present utility model;

[0031] Figure 6 For the present utility model Figure 5 An enlarged view of C in;

[0032] Figure 7 For the present utility model Figure 5 An enlarged view of D in;

[0033] Figure 8 It is an exploded view of the fixing component and the lifting component in the present utility model.

[0034] Explanation of the reference numerals in the drawings:

[0035] 1. Frame; 2. Conveyor belt; 3. Installation frame; 4. Auxiliary roller; 5. Support frame; 6. Stabilizing rod; 7. Stopper; 8. Installation box; 9. Support plate; 10. Protection box; 11. Support box; 12. Collection box; 13. Installation plate; 14. Cylinder; 15. Lifting column; 16. Bolt; 17. Connection plate; 18. Top plate; 19. Tester; 20. Telescopic rod; 21. Connecting pipe; 22. First three-way; 23. Support plate; 24. Suction cup; 25. Vacuum pump; 26. Second three-way; 27. First reduction motor; 28. First screw; 29. Support block; 30. Driven gear; 31. Driving gear; 32. Second reduction motor; 33. Second screw; 34. Rubber block; 35. Groove. Detailed implementation manners

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "provided with", "sheathed / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0039] The following will further elaborate on the present invention Figures 1-8 with reference to the attached drawings.

[0040] Please refer to Figures 1-8, An EL testing device for a photovoltaic panel, comprising a frame body 1. Columns are provided at the four corners of the bottom end of the frame body 1. A conveyor belt 2 is arranged inside the frame body 1. A support frame 5 is fixedly installed at the top end of the frame body 1. Two symmetrically distributed mounting plates 13 are fixedly installed at the top end of the frame body 1. A calibration component is arranged between the two mounting plates 13. The calibration component includes cylinders 14 arranged on the opposite sides of the two mounting plates 13. The piston shafts of the two cylinders 14 slide through the mounting plates 13 on the same side. The ends of the piston shafts of the two cylinders 14 are fixedly installed with mounting frames 3. A plurality of auxiliary rollers 4 arranged in a linear array are rotatably installed in the two mounting frames 3. Two symmetrically distributed sliding rods are fixedly installed on the opposite sides of the two mounting frames 3. One end of the two sliding rods in the same group away from the mounting frame 3 in the same group slides through the mounting plate 13 in the same group. When the device is in use, after the staff places the photovoltaic panel on the conveyor belt 2, the photovoltaic panel is conveyed by the conveyor belt 2. Subsequently, the cylinders 14 are driven to make the mounting frames 3 and the auxiliary rollers 4 in the same group contact the opposite side of the photovoltaic panel synchronously. Through the cooperation of the two groups of auxiliary rollers 4, it plays a role in calibrating the conveying position of the photovoltaic panel on the conveyor belt 2, helps to avoid the phenomenon of the photovoltaic panel shifting during conveying, facilitates the subsequent accurate scanning of the device, and the auxiliary rollers 4 are rotatably installed in the mounting frames 3, which can not only play a role in calibrating the conveying position of the photovoltaic panel, but also does not affect the subsequent movement of the photovoltaic panel.

[0041] An installation box 8 is fixedly installed at the top end of the support frame 5. A lifting column 15 is slidably installed inside the installation box 8. The bottom end of the lifting column 15 slides through the support frame 5. The bottom end of the lifting column 15 is fixedly installed with a connecting plate 17. A tester 19 is arranged below the connecting plate 17. The top end of the tester 19 is fixedly installed with a top plate 18. When the photovoltaic panel moves below the support frame 5, the tester 19 scans the photovoltaic panel, which can play a role in detecting the photovoltaic panel.

[0042] On one side of the frame body 1, a support plate 9 in an inverted "L" shape is fixedly installed, and at the bottom end of the horizontal section of the support plate 9, a support box 11 is fixedly installed. A support block 29 is slidably installed in the support box 11, and the bottom end of the support block 29 slidably penetrates through the support box 11 and is fixedly installed with a telescopic rod 20. The bottom end of the telescopic rod 20 is fixedly installed with a support plate 23. An adsorption assembly is provided at the bottom end of the support plate 23. The adsorption assembly includes four suction cups 24 arranged at the four corners of the bottom end of the support plate 23. The top ends of the suction cups 24 all penetrate through the support plate 23. The top ends of the two suction cups 24 on the same side are fixedly connected with a first three-way pipe 22. A vacuum pump 25 is fixedly installed at the top end of the support plate 23, and the top end of the vacuum pump 25 is fixedly connected with a second three-way pipe 26. Connecting pipes 21 are connected between the opposite ends of the two first three-way pipes 22 and the second three-way pipe 26. When the device detects defective products, the telescopic rod 20 is used to drive the support plate 23 to descend with the suction cups 24, and the suction cups 24 are brought into contact with the top of the photovoltaic panel. Subsequently, the vacuum pump 25 operates. Then, through the cooperation of the first three-way pipe 22, the second three-way pipe 26 and the connecting pipes 21, the suction force acts on the photovoltaic panel through the suction cups 24, so that the suction cups 24 are adsorbed on the top of the photovoltaic panel, and the function of clamping the photovoltaic panel can be achieved.

[0043] A driving assembly is provided between the support block 29 and the support box 11. A collection box 12 is provided on one side of the frame body 1 close to the support plate 9. The driving assembly includes a first screw rod 28 rotatably installed in the support box 11. The support block 29 is sleeved on the side wall of the first screw rod 28. A protective box 10 is fixedly installed on one side of the support box 11, and a first reduction motor 27 is fixedly installed in the protective box 10. One end of the first screw rod 28 penetrates through the protective box 10 and is fixedly connected with the end of the output shaft of the first reduction motor 27. Limit blocks are fixedly installed on both sides of the support block 29, and limit grooves matching the limit blocks on the same side are opened on the inner wall of the support box 11. After the defective photovoltaic panel is adsorbed, the telescopic rod 20 is used to drive the photovoltaic panel to rise. Subsequently, the first reduction motor 27 is used to drive the first screw rod 28 to rotate, so that the support block 29 drives the telescopic rod 20 and the defective photovoltaic panel to move synchronously towards the collection box 12. When the defective photovoltaic panel moves to the collection box 12 and rises, after the telescopic rod 20 drives the support plate 23 and the defective photovoltaic panel to descend synchronously behind the collection box 12, the adsorption force of the suction cups 24 on the photovoltaic panel is then released, and the function of placing the defective photovoltaic panel can be achieved, thereby achieving the effect of sorting and picking.

[0044] A fixing component is provided between the top end of the top plate 18 and the bottom end of the connecting plate 17. The fixing component includes a rubber block 34 fixedly installed at the top end of the top plate 18. A groove 35 matching the rubber block 34 is formed at the bottom end of the connecting plate 17. Two symmetrically distributed bolts 16 are provided at the top end of the connecting plate 17, and the bottom ends of the two bolts 16 penetrate through the connecting plate 17. Thread grooves matching the bolts 16 are formed at the top end of the top plate 18. The staff places the rubber block 34 installed at the top end of the top plate 18 into the groove 35 formed at the bottom end of the connecting plate 17 to position the tester 19. Subsequently, the staff passes the bolts 16 through the connecting plate 17 and screws them with the thread grooves formed at the top end of the top plate 18, which can fix and install the tester 19. By screwing the bolts 16 with the thread grooves, it is convenient for the staff to disassemble and repair the tester 19 later.

[0045] A lifting component is provided between the lifting column 15 and the installation box 8. The lifting component includes a second screw rod 33 rotatably installed on the inner wall of the top end of the installation box 8. The bottom end of the second screw rod 33 extends into the support frame 5. The top end of the lifting column 15 is sleeved on the side wall of the second screw rod 33. A driven gear 30 is fixedly sleeved on the side wall of the upper section of the second screw rod 33. A second reduction motor 32 is fixedly installed in the installation box 8, and a driving gear 31 is fixedly sleeved on the side wall of the output shaft of the second reduction motor 32. The driving gear 31 meshes with the driven gear 30. Two "L"-shaped stabilizing rods 6 are fixedly installed on both sides of the lifting column 15. The top ends of the vertical sections of the two stabilizing rods 6 slidably penetrate through the support frame 5, and blocks 7 are fixedly installed on the opposite sides of the top ends of the two stabilizing rods 6.

[0046] The second reduction motor 32 drives the driving gear 31 to rotate. The driving gear 31 drives the driven gear 30 to rotate. The driven gear 30 drives the second screw rod 33 to rotate, thereby driving the lifting column 15 to lift and lower. The lifting column 15 drives the tester 19 to lift and lower synchronously, which can adjust the distance between the tester 19 and the photovoltaic panel, facilitating subsequent detection and scanning of the photovoltaic panel by the device. When the lifting column 15 lifts and lowers, the lifting column 15 drives the stabilizing rods 6 to lift and lower synchronously. Through the cooperation of the stabilizing rods 6, it helps to prevent the lifting column 15 from rotating synchronously with the second screw rod 33, which is beneficial to maintaining the stability of the lifting of the lifting column 15. And blocks 7 are provided on the side wall of the top end of the stabilizing rods 6, which helps to prevent the stabilizing rods 6 from sliding out of the support frame 5 and plays a role in restricting the lifting column 15, helping to prevent the lifting column 15 from disengaging from the screw engagement with the second screw rod 33.

[0047] The implementation principle of the embodiment of the present utility model is as follows: When the device is in use, the staff places the photovoltaic panel on the conveyor belt 2 arranged inside the frame body 1, and the conveyor belt 2 conveys the photovoltaic panel to the lower part of the support frame 5. When the photovoltaic panel is being conveyed on the conveyor belt 2, the position of the photovoltaic panel on the conveyor belt 2 is adjusted through the calibration component, and the photovoltaic panel can be restricted, which helps to avoid the phenomenon of the photovoltaic panel shifting during conveyance, facilitating subsequent precise scanning of the device. After the photovoltaic panel moves to the lower part of the support frame 5, the tester 19 can scan and detect the photovoltaic panel. When the device is in use, the distance between the tester 19 and the photovoltaic panel can be adjusted through the lifting component, facilitating precise scanning of the device. Moreover, the tester 19 is connected to the connecting plate 17 through the fixing component, facilitating subsequent disassembly and maintenance of the tester 19 by the staff. When the tester 19 scans and detects defective products, the defective products are conveyed to the lower part of the support box 11 through the conveyor belt 2. Subsequently, the telescopic rod 20 drives the adsorption component to descend and contact the top of the defective product, and the defective product is adsorbed through the adsorption component, which can clamp the defective product. After the defective product is adsorbed, the telescopic rod 20 drives the defective product to rise, and at the same time, the driving component drives the support block 29 to move the defective product to the rising collecting frame 12. Subsequently, the telescopic rod 20 drives the defective product to move into the collecting frame 12, which can select and collect the defective products.

[0048] The above are all the preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. An EL testing device for a photovoltaic panel, comprising a frame (1), characterized in that: The frame (1) is provided with upright posts at the four corners of the bottom end, a conveyor belt (2) is provided inside the frame (1), a support frame (5) is fixedly installed at the top end of the frame (1), two symmetrically distributed mounting plates (13) are fixedly installed at the top end of the frame (1), and a correction component is provided between the two mounting plates (13); A mounting box (8) is fixedly mounted on the top of the support frame (5), and a lifting column (15) is slidably mounted in the mounting box (8), the bottom end of the lifting column (15) slides through the support frame (5), and a connecting plate (17) is fixedly mounted on the bottom end of the lifting column (15), a tester (19) is provided below the connecting plate (17), and a top plate (18) is fixedly mounted on the top of the tester (19), a fixing component is provided between the top end of the top plate (18) and the bottom end of the connecting plate (17), and a lifting component is provided between the lifting column (15) and the mounting box (8); A support plate (9) in an inverted "L" shape is fixedly mounted on one side of the frame body (1), and a support box (11) is fixedly mounted on the bottom end of the horizontal section of the support plate (9), a support block (29) is slidably mounted in the support box (11), and the bottom end of the support block (29) slides through the support box (11) and is fixedly mounted with a telescopic rod (20), a support plate (23) is fixedly mounted on the bottom end of the telescopic rod (20), an adsorption component is provided at the bottom end of the support plate (23), a driving component is provided between the support block (29) and the support box (11), and a collection frame (12) is provided on the side of the frame body (1) close to the support plate (9).

2. The EL testing device for a photovoltaic panel according to claim 1, characterized in that: The correction component comprises a cylinder (14) arranged on the opposite side of the two mounting plates (13), the piston shafts of the two cylinders (14) slide through the mounting plate (13) on the same side, and the ends of the piston shafts of the two cylinders (14) are fixedly installed with mounting frames (3), and auxiliary rollers (4) distributed in a linear array are rotatably installed in the two mounting frames (3), and two symmetrically distributed sliding rods are fixedly installed on the opposite side of the two mounting frames (3), and the two sliding rods in the same group slide through the mounting plate (13) in the same group at one end away from the mounting frame (3) in the same group.

3. The EL testing device for a photovoltaic panel according to claim 1, characterized in that: The fixing assembly comprises a rubber block (34) fixedly mounted on the top of the top plate (18); a groove (35) matching the rubber block (34) is provided at the bottom of the connecting plate (17); two symmetrically distributed bolts (16) are provided at the top of the connecting plate (17); the bottom ends of the two bolts (16) both penetrate the connecting plate (17); and a screw groove matching the bolts (16) is provided at the top of the top plate (18).

4. The EL testing device for a photovoltaic panel according to claim 1, characterized in that: The lifting assembly comprises a second screw rod (33) rotatably mounted on the inner wall of the top end of the installation box (8), the bottom end of the second screw rod (33) extends into the support frame (5), the top end of the lifting column (15) is sleeved on the side wall of the second screw rod (33), the upper side wall of the second screw rod (33) is fixedly sleeved with a driven gear (30), a second reduction motor (32) is fixedly mounted in the installation box (8), and a driving gear (31) is fixedly sleeved on the side wall of the output shaft of the second reduction motor (32), and the driving gear (31) is meshed with the driven gear (30).

5. The EL testing device for a photovoltaic panel according to claim 1, characterized in that: Two "L"-shaped stabilizing rods (6) are fixedly installed on both sides of the lifting column (15), the top ends of the vertical sections of the two stabilizing rods (6) slide through the support frame (5), and stoppers (7) are fixedly installed on the opposite sides of the top ends of the two stabilizing rods (6).

6. The EL testing device for a photovoltaic panel according to claim 1, characterized in that: The adsorption assembly comprises four suction cups (24) arranged at four corners of the bottom end of the support plate (23); the top ends of the suction cups (24) all penetrate the support plate (23); the top ends of two suction cups (24) on the same side are fixedly connected to a first tee (22); a vacuum pump (25) is fixedly installed on the top end of the support plate (23); and the top end of the vacuum pump (25) is fixedly connected to a second tee (26); and a connecting pipe (21) is connected between opposite ends of the first tee (22) and the second tee (26).

7. The EL testing device for a photovoltaic panel according to claim 1, characterized in that: The driving assembly comprises a first screw rod (28) rotatably mounted in a support box (11); the support block (29) is sleeved on a side wall of the first screw rod (28); a protective box (10) is fixedly mounted on one side of the support box (11); a first reduction motor (27) is fixedly mounted in the protection box (10); one end of the first screw rod (28) passes through the protection box (10) and is fixedly connected to the end of the output shaft of the first reduction motor (27); limit blocks are fixedly mounted on both sides of the support block (29); and a limit groove matching the limit block on the same side is provided on the inner wall of the support box (11).

Images