A defect detection device for solar cell

Abstract

The utility model relates to the technical field of solar cell panels, and specifically, to a defect detection device for solar cell panels. The utility model comprises a conveyor and a solar cell panel body, wherein the upper surfaces of the support plates on both sides of the conveyor are provided with limit plates for limiting the moving direction of the solar cell panel body; the first mounting frame and the second mounting frame are respectively provided on both sides above the conveyor. In the defect detection device for solar cell panels, the moving position of the solar cell panel is limited by the limit plates, and the upper surface of the solar cell panel is cleaned by the auxiliary cleaning brush of the auxiliary component. At the same time, the dust and lint on the solar cell panel are sucked into the interior of the vacuum cleaner by the dust suction component, which not only improves the working efficiency of solar cell panel cleaning and avoids time waste, but also improves the accuracy of the defect detection device for solar cell panel detection, thereby improving the practicality of the defect detection device.

Description

Technical Field

[0001] The utility model relates to the technical field of solar cell chips, in particular to a defect detection device for solar cell chips. Background Art

[0002] At present, the essence of surface defect detection of monocrystalline silicon solar cells is to determine whether there are defects on the surface of monocrystalline silicon solar cells and locate the position of the defective area. In recent years, solar photovoltaic power generation has become one of the main solutions to the energy crisis. At the same time, the quality of solar cells directly affects the efficiency of photovoltaic power generation. Therefore, it is of great significance to detect defects on the surface of solar cells.

[0003] There are many existing technologies for defect detection equipment for solar cells, such as:

[0004] Chinese patent publication number CN209627321U discloses a defect detection device for monocrystalline silicon solar cells, which includes a support leg, a workbench fixedly connected to the top of the support leg, a transmission slot fixedly opened on the surface of the workbench, a conveyor belt slidably connected to the inner wall of the transmission slot, and a detection box fixedly connected to the surface of the workbench. The defect detection device for monocrystalline silicon solar cells is provided with a mounting slot fixedly opened on the surface of the detection box, and a fixed bearing is fixedly installed on the inner wall of the mounting slot. In the actual detection process, the monocrystalline silicon solar cell is placed on the conveyor belt. During the conveyor belt transportation process, when the monocrystalline silicon solar cell is transported to the bottom of the dust removal brush through the conveyor belt, the dust removal brush is driven by a motor to rotate to remove dust and lint from the monocrystalline silicon solar cell, thereby solving the problem of dust and lint affecting the detection quality during image acquisition.

[0005] It can be seen that most defect detection equipment will clean the dust and lint on the surface of solar cells before detecting the solar cells. However, during the cleaning process, when the surface of the solar cells is cleaned by a dust removal brush, it is inevitable that the position of the solar cells on the conveyor belt will be moved, which will affect the quality of CCD camera detection. Similarly, during the cleaning process, the solar cells may get stuck near the dust removal brush, which not only reduces the effect of cleaning the dust and lint on the solar cells, but also affects the work efficiency of solar cell detection, resulting in a waste of time, thereby increasing production costs and causing economic losses.

[0006] In view of this, we propose a defect detection device for solar cells. Utility Model Content

[0007] The utility model aims to solve the above-mentioned shortcomings and provide a defect detection device which uses a dust suction component and a cleaning brush to clean solar cells multiple times.

[0008] The moving position of the solar cell is limited by the limit plate, and the upper surface of the solar cell is cleaned by the auxiliary cleaning brush of the auxiliary component. At the same time, the dust and lint on the solar cell are sucked into the interior of the vacuum cleaner by the dust suction component.

[0009] Therefore, the utility model provides a defect detection device for solar cell sheets, which includes a conveyor and a solar cell sheet body, wherein support plates are arranged on both sides of the upper surface of the conveyor, and the upper surfaces of the support plates on both sides of the conveyor are provided with limit plates for limiting the moving direction of the solar cell sheet body;

[0010] A first mounting frame and a second mounting frame are respectively arranged on both sides above the conveyor, and a CCD camera for detecting the solar cell body is arranged below the second mounting frame;

[0011] A lifting assembly is provided below the first mounting frame, a dust collecting assembly for cleaning dust and lint on the surface of the solar cell body is provided above the lifting assembly, an auxiliary assembly is provided inside the lifting assembly, a cleaning brush is provided below the auxiliary assembly, and the auxiliary assembly is used to assist the cleaning brush in cleaning the upper surface of the solar cell body back and forth.

[0012] As a further improvement of the technical solution, the lifting assembly includes at least a hydraulic cylinder, the lower surface of the first mounting frame is provided with the hydraulic cylinder, and the piston rod of the hydraulic cylinder is provided with a mounting box.

[0013] As a further improvement of the present technical solution, the dust collection assembly at least includes a dust collector, the dust collector is arranged on the upper surface of the installation box, a diversion pipe is arranged on one side of the dust collector, fixed plates are arranged on both sides of the installation box, and dust collection ports are arranged at both ends of the diversion pipe respectively extending to the bottom of the two fixed plates.

[0014] As a further improvement of the present technical solution, the auxiliary component at least includes a movable groove, a movable groove is opened inside the installation box, an electric telescopic rod is arranged on one side inside the movable groove, a connecting rod is arranged on the piston rod of the electric telescopic rod, an elastic member is arranged on the side of the connecting rod away from the electric telescopic rod, the other end of the elastic member is fixedly connected to the inner wall of the movable groove, and the lower surface of the connecting rod is fixedly connected to the upper surface of the cleaning brush.

[0015] As a further improvement of the technical solution, a rubber pad is provided on one side of the limit plate close to the upper surface of the conveyor, and the rubber pad has a certain elastic function.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] In the defect detection device for solar cells, the moving position of the solar cell is limited by a limit plate, and the upper surface of the solar cell is cleaned by an auxiliary cleaning brush of an auxiliary component. At the same time, dust and lint on the solar cell are sucked into the interior of the vacuum cleaner by a dust suction component, which not only improves the working efficiency of solar cell cleaning and avoids time waste, but also improves the accuracy of the defect detection device in detecting solar cells, thereby improving the practicability of the defect detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is described in more detail below by way of example with reference to the accompanying drawings, in which:

[0019] Figure 1 This is a schematic diagram of the structure of the defect detection equipment of the utility model;

[0020] Figure 2 For the utility model Figure 1 The enlarged structural diagram at A in the middle;

[0021] Figure 3 This is a schematic diagram of the structure of the dust collection component of the utility model;

[0022] Figure 4 It is a schematic diagram of the cutaway structure of the auxiliary component of the utility model.

[0023] The meaning of each number in the figure is:

[0024] 10. Conveyor; 11. Support plate; 12. Limit plate; 13. Rubber pad;

[0025] 20. First mounting frame; 21. Lifting assembly; 211. Hydraulic cylinder; 212. Mounting box; 22. Dust collection assembly; 221. Dust collector; 222. Diverter pipe; 223. Fixing plate; 224. Dust collection port; 23. Auxiliary assembly; 231. Moving slot; 232. Electric telescopic rod; 233. Connecting rod; 234. Elastic member; 24. Cleaning brush;

[0026] 30. Second mounting bracket; 31. CCD camera;

[0027] 40. Solar cell body. DETAILED DESCRIPTION

[0028] Most defect detection equipment will clean the dust and lint on the surface of solar cells before inspecting them. However, during the cleaning process, when the surface of the solar cells is cleaned with a dust removal brush, it is inevitable that the position of the solar cells on the conveyor belt will be moved, which will affect the quality of CCD camera inspection. Similarly, during the cleaning process, the solar cells may get stuck near the dust removal brush, which not only reduces the effect of cleaning the dust and lint on the solar cells, but also affects the work efficiency of solar cell inspection, resulting in a waste of time, thereby increasing production costs and causing economic losses.

[0029] See also Figure 1-Figure 4 The embodiment of the utility model shown in the figure comprises a conveyor 10 and a solar cell body 40, support plates 11 are arranged on both sides of the upper surface of the conveyor 10, and limit plates 12 for limiting the moving direction of the solar cell body 40 are arranged on the upper surfaces of the support plates 11 on both sides of the conveyor 10; a first mounting frame 20 and a second mounting frame 30 are arranged on both sides above the conveyor 10, and a CCD camera 31 for detecting the solar cell body 40 is arranged below the second mounting frame 30; a lifting component 21 is arranged below the first mounting frame 20, and a dust suction component 22 for cleaning dust and lint on the surface of the solar cell body 40 is arranged above the lifting component 21, an auxiliary component 23 is arranged inside the lifting component 21, and a cleaning brush 24 is arranged below the auxiliary component 23, and the auxiliary component 23 is used to assist the cleaning brush 24 in cleaning the upper surface of the solar cell body 40 back and forth.

[0030] First, the specific structure of the lifting assembly 21 is disclosed. The lifting assembly 21 at least includes a hydraulic cylinder 211 . The lower surface of the first mounting frame 20 is provided with the hydraulic cylinder 211 , and the piston rod of the hydraulic cylinder 211 is provided with a mounting box 212 .

[0031] The improvement lies in that: the hydraulic cylinder 211 is powered on to make it work, and the piston rod of the hydraulic cylinder 211 pushes the dust suction component 22 and the cleaning brush 24 to move closer to the solar cell body 40 for cleaning. When the solar cell body 40 needs to be loaded, the piston rod of the hydraulic cylinder 211 is reset to lift the dust suction component 22 and the cleaning brush 24 upward, which does not affect the normal loading of the solar cell body 40, thereby improving the flexibility of the defect detection equipment.

[0032] Secondly, the specific structure of the dust collection component 22 is disclosed. The dust collection component 22 at least includes a dust collector 221. The dust collector 221 is arranged on the upper surface of the installation box 212, a diversion pipe 222 is arranged on one side of the dust collector 221, and fixed plates 223 are arranged on both sides of the installation box 212. Dust collection ports 224 are arranged at both ends of the diversion pipe 222 and extend to the bottom of the two fixed plates 223 respectively.

[0033] The improvement lies in that: the vacuum cleaner 221 is connected to a power source to start working. Through the vacuuming work of the vacuum cleaner 221, the upper surface of the solar cell body 40 flows from the vacuum port 224 to the shunt pipe 222 and enters the interior of the vacuum cleaner 221. The two vacuum ports 224 divided by the shunt pipe 222 can be used to suck the dust and lint on the upper surface of the solar cell body 40 into the interior of the vacuum cleaner 221 before and after the cleaning brush 24 cleans the surface of the solar cell body 40. This not only improves the cleaning efficiency of the solar cell body 40 and avoids time waste, but also improves the accuracy of the defect detection equipment in detecting the solar cell body 40, thereby improving the practicability of the defect detection equipment.

[0034] The specific structure of the auxiliary component 23 is disclosed again. The auxiliary component 23 at least includes a movable groove 231. The movable groove 231 is opened inside the mounting box 212, and an electric telescopic rod 232 is arranged on one side inside the movable groove 231. The piston rod of the electric telescopic rod 232 is provided with a connecting rod 233, and an elastic member 234 is arranged on the side of the connecting rod 233 away from the electric telescopic rod 232. The other end of the elastic member 234 is fixedly connected to the inner wall of the movable groove 231, and the lower surface of the connecting rod 233 is fixedly connected to the upper surface of the cleaning brush 24.

[0035] The improvement lies in: connecting the electric telescopic rod 232 to a power source to make it work, and through the pushing and resetting of the piston rod of the electric telescopic rod 232, the connecting rod 233 is driven to move back and forth inside the movable groove 231, and at the same time the elastic member 234 is deformed, stretched and contracted, thereby increasing the stability of the movement of the connecting rod 233, and also assisting the cleaning brush 24 to clean the dust and lint on the surface of the solar cell body 40, thereby improving the work efficiency and quality of the cleaning of the upper surface of the solar cell body 40, and also improving the accuracy of the CCD camera 31 in detecting the solar cell body 40, thereby improving the practicality of the defect detection equipment.

[0036] Taking into account that the limiting plate 12 limits the solar cell body 40, while the conveyor 10 moves the position of the solar cell body 40, it is inevitable that the side of the solar cell body 40 will be scratched, thereby reducing the quality of the inspection of the solar cell body 40 and causing economic losses. Therefore, a rubber pad 13 is provided on the side of the limiting plate 12 close to the upper surface of the conveyor 10, and the rubber pad 13 has a certain elastic function.

[0037] The improvement lies in that the positions of both sides of the solar cell body 40 are limited by the rubber pads 13, which not only controls the direction of the conveyor 10 moving the position of the solar cell body 40, but also prevents the limit plate 12 from causing damage to the side of the solar cell body 40, thereby improving the safety of the solar cell body 40 during the detection process, and improving the quality of the detection of the solar cell body 40, thereby avoiding economic losses.

[0038] In summary, the working principle of the present solution is as follows: first, place the solar cell body 40 at the entrance of the upper surface of the conveyor 10, then connect the power supply to the hydraulic cylinder 211 to make it work, and through the work of the piston rod of the hydraulic cylinder 211 pushing, the dust collection assembly 22 and the cleaning brush 24 are moved closer to the solar cell body 40, and then, connect the power supply to the electric telescopic rod 232 to make it work, and through the work of the piston rod of the electric telescopic rod 232 pushing and resetting, the connecting rod 233 is driven to move back and forth inside the moving groove 231, and at the same time, the elastic member 234 is also deformed, stretched and contracted, and the cleaning brush 24 is assisted to clean the surface of the solar cell body 40. Dust and lint are cleaned, and then the vacuum cleaner 221 is powered on to start working. Through the vacuuming work of the vacuum cleaner 221, the upper surface of the solar cell body 40 flows from the vacuum port 224 to the shunt pipe 222 and enters the interior of the vacuum cleaner 221. The two vacuum ports 224 divided by the shunt pipe 222 can be used before and after the cleaning brush 24 cleans the surface of the solar cell body 40. Finally, the position of the solar cell body 40 is moved to the bottom of the CCD camera 31 by the conveyor 10, and the solar cell body 40 is inspected for defects by the CCD camera 31 to complete the defect detection of the solar cell.

[0039] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A defect detection device for a solar cell, comprising a conveyor (10) and a solar cell body (40), characterized in that: Support plates (11) are provided on both sides of the upper surface of the conveyor (10), and limit plates (12) for limiting the moving direction of the solar cell sheet body (40) are provided on the upper surfaces of the support plates (11) on both sides of the conveyor (10); A first mounting frame (20) and a second mounting frame (30) are respectively arranged on both sides above the conveyor (10), and a CCD camera (31) for detecting the solar cell body (40) is arranged below the second mounting frame (30); A lifting component (21) is arranged below the first mounting frame (20), a dust collecting component (22) for cleaning dust and lint on the surface of the solar cell body (40) is arranged above the lifting component (21), an auxiliary component (23) is arranged inside the lifting component (21), a cleaning brush (24) is arranged below the auxiliary component (23), and the auxiliary component (23) is used to assist the cleaning brush (24) in cleaning the upper surface of the solar cell body (40) back and forth.

2. The defect detection device for solar cell according to claim 1, characterized in that: The lifting assembly (21) comprises at least a hydraulic cylinder (211); the lower surface of the first mounting frame (20) is provided with the hydraulic cylinder (211); and the piston rod of the hydraulic cylinder (211) is provided with a mounting box (212).

3. The defect detection device for solar cell according to claim 2, characterized in that: The dust collection assembly (22) at least comprises a dust collector (221); the dust collector (221) is arranged on the upper surface of the installation box (212); a shunt pipe (222) is arranged on one side of the dust collector (221); fixed plates (223) are arranged on both sides of the installation box (212); and dust collection ports (224) are arranged at both ends of the shunt pipe (222) extending to the bottom of the two fixed plates (223).

4. The defect detection device for solar cell according to claim 2, characterized in that: The auxiliary component (23) at least comprises a movable groove (231), the interior of the installation box (212) is provided with the movable groove (231), one side of the interior of the movable groove (231) is provided with an electric telescopic rod (232), the piston rod of the electric telescopic rod (232) is provided with a connecting rod (233), the side of the connecting rod (233) away from the electric telescopic rod (232) is provided with an elastic member (234), the other end of the elastic member (234) is fixedly connected to the inner wall of the movable groove (231), and the lower surface of the connecting rod (233) is fixedly connected to the upper surface of the cleaning brush (24).

5. The defect detection device for solar cell according to claim 1, characterized in that: A rubber pad (13) is provided on one side of the limiting plate (12) close to the upper surface of the conveyor (10), and the rubber pad (13) has a certain elastic function.

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