Photovoltaic PL detection device

Abstract

The utility model relates to the technical field of photovoltaic PL detection, and discloses a photovoltaic PL detection device which comprises a supporting mechanism, a detection mechanism is installed in the supporting mechanism, the detection mechanism emits laser to a photovoltaic cell panel and carries out imaging, an angle adjusting mechanism is further installed in the supporting mechanism, and the angle adjusting mechanism is used for adjusting the angle of the photovoltaic cell panel. And the angle adjusting mechanism is used for supporting the photovoltaic cell panel and adjusting the angle of the photovoltaic cell panel. According to the photovoltaic PL detection device, the driving turntable and the driven turntable are symmetrically mounted on the inner wall of the equipment frame, the clamps are arranged on the driving turntable and the driven turntable to clamp a photovoltaic cell panel, and meanwhile, the driving turntable is driven through the transmission motor, so that the photovoltaic cell panel can be adjusted in angle or turned over, and the detection accuracy is improved. The laser of the laser generating device is received from different angles, and the industrial camera can image the photovoltaic cell panel from different angles, so that the effect of improving the detection efficiency is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic PL detection, in particular to a photovoltaic PL detection device. Background Technique

[0002] In recent years, the photovoltaic industry has developed rapidly. In order to pursue higher efficiency and reduce production costs, the production process and technology of the photovoltaic industry are also constantly progressing and developing. During the production process of photovoltaic panels, problems such as hidden cracks, uneven diffusion, and virtual printing may occur. The existence of these defects may affect the photoelectric conversion efficiency of photovoltaic cells, reduce the battery service life, and affect the stability of the photovoltaic system. PL (Photoluminescence) detection can realize the detection and analysis of various process links such as silicon wafers, diffusion, etching, electrode printing, and solar cells, and can quickly and effectively locate the problems that occur in the production process, providing a reliable guarantee for product quality.

[0003] PL photoluminescence principle: Using a laser with a specific wavelength as the excitation light source to provide photons with a certain amount of energy, the ground-state electrons in the silicon wafer enter the excited state after absorbing these photons, and release near-infrared light with a peak wavelength of about 1150nm. Then, a highly sensitive and high-resolution camera is used for photosensing and imaging. After imaging, the light intensity is proportional to the concentration of non-equilibrium minority carriers at the corresponding position. Since defects will cause the concentration of minority carriers in this area to decrease, thereby weakening its fluorescence effect, it will appear as dark spots, lines, or a certain area after imaging. Therefore, it is possible to judge whether there are defects, impurities, etc. that ultimately affect the battery efficiency through photoluminescence.

[0004] In the existing photovoltaic PL detection device, the product to be detected is generally placed fixedly. When irradiating with a laser, the electrical components on the product to be detected may block the laser light source, resulting in the need for multiple position adjustments to complete a full detection. And some products need to be detected on both sides. Therefore, the product also needs to be turned over.

[0005] Therefore, this application proposes a photovoltaic PL detection device, which can perform detection from multiple angles when detecting products, reduce the number of adjustments required, and improve the detection efficiency. Summary of the Invention

[0006] The purpose of the utility model is to provide a photovoltaic PL detection device to solve the problems raised in the above background technique.

[0007] To solve the above technical problems, the utility model provides the following technical solution: A photovoltaic PL detection device, including a support mechanism, and a detection mechanism is installed inside the support mechanism. The detection mechanism emits laser light and performs imaging on the photovoltaic panel respectively.

[0008] An angle adjustment mechanism is also installed inside the support mechanism, and the angle adjustment mechanism supports and adjusts the angle of the photovoltaic panel;

[0009] The support mechanism includes an equipment frame, and a display screen and a console are installed on the back of the equipment frame. The display screen is used for displaying images, and the console is used for controlling the detection mechanism and the angle adjustment mechanism;

[0010] The angle adjustment mechanism includes a driving turntable and a driven turntable symmetrically installed on the inner wall of the equipment frame. Both the driving turntable and the driven turntable are rotatable. Clamps are installed on the opposite surfaces of the driving turntable and the driven turntable. The clamps clamp the edges of the photovoltaic panel. A transmission motor is installed on the side of the driving turntable, and the transmission motor drives the driving turntable to rotate.

[0011] Preferably, the transmission motor is a servo motor. The transmission motor is electrically connected to the console by signals and is controlled by the console.

[0012] Preferably, the detection mechanism includes an industrial camera and a laser generating device. The industrial camera is installed on the inner top of the equipment frame, and the field of view of the industrial camera covers the inside of the equipment frame;

[0013] The laser generating device is installed on one side of the top of the equipment frame to emit near-infrared light to the photovoltaic panel.

[0014] Preferably, the detection mechanism further includes a wiring wire groove. One end of the wiring wire groove is respectively led to the industrial camera and the laser generating device, and the other end of the wiring wire groove is led to the console. Both the industrial camera and the laser generating device are controlled by the console.

[0015] Preferably, the laser generating device includes a regulator. A suspension rod is installed at the bottom of the regulator, and a laser generator is installed at the bottom of the suspension rod, and the angle of the laser generator is adjustable.

[0016] Preferably, the clamp includes a trapezoid table with a horizontal top. A threaded hole is opened on the trapezoid table, and a bolt is threadedly connected in the threaded hole. The nut of the bolt fixes the edge of the photovoltaic panel.

[0017] Compared with the prior art, the beneficial effects achieved by the present utility model are:

[0018] First, the utility model symmetrically installs an active turntable and a passive turntable on the inner wall of the equipment frame, and sets fixtures on the active turntable and the passive turntable to clamp the photovoltaic panel. At the same time, the active turntable is driven by a transmission motor, so that the photovoltaic panel can adjust the angle or turn over, receive the laser of the laser generating device at different angles, and enable the industrial camera to image the photovoltaic panel from different angles, achieving the effect of improving the detection efficiency.

[0019] Second, the utility model sets a regulator on the top of the equipment frame, adjusts the output power of the laser generator through the regulator to adjust the peak frequency, adapts to different types of products to be inspected, and connects the laser generator through a suspension rod, so that the angle of the laser generator can also be finely adjusted to adapt to the heights of different products to be inspected, achieving the effect of improving the adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the utility model;

[0021] Figure 2 is a front view of the structure of the utility model;

[0022] Figure 3 is a side view of the structure of the utility model;

[0023] Figure 4 is a top view of the structure of the utility model;

[0024] Figure 5 is a schematic diagram of the structure of the utility model clamping the photovoltaic panel.

[0025] Wherein: 1. Support mechanism; 101. Equipment frame; 102. Display screen; 103. Console; 2. Detection mechanism; 201. Industrial camera; 202. Laser generating device; 2021. Regulator; 2022. Suspension rod; 2023. Laser generator; 203. Wiring wire groove; 3. Angle adjustment mechanism; 301. Active turntable; 302. Passive turntable; 303. Fixture; 304. Transmission motor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0027] Please refer to Figures 1-5, a photovoltaic PL detection device, including a support mechanism 1. Inside the support mechanism 1, a detection mechanism 2 is installed. The detection mechanism 2 emits laser light onto the photovoltaic panel and conducts imaging respectively;

[0028] Inside the support mechanism 1, an angle adjustment mechanism 3 is also installed. The angle adjustment mechanism 3 supports and adjusts the angle of the photovoltaic panel;

[0029] The support mechanism 1 includes an equipment frame 101. On the back of the equipment frame 101, a display screen 102 and a console 103 are installed. The display screen 102 is used to display the imaging, and the console 103 is used to control the detection mechanism 2 and the angle adjustment mechanism 3;

[0030] The angle adjustment mechanism 3 includes a driving turntable 301 and a driven turntable 302 symmetrically installed on the inner wall of the equipment frame 101. Both the driving turntable 301 and the driven turntable 302 can rotate. On the opposite surfaces of the driving turntable 301 and the driven turntable 302, clamps 303 are installed. The clamps 303 clamp the edge of the photovoltaic panel. On the side of the driving turntable 301, a transmission motor 304 is installed. The transmission motor 304 drives the driving turntable 301 to rotate.

[0031] Through the above technical solution, the driving turntable 301 and the driven turntable 302 are symmetrically installed on the inner wall of the equipment frame 101, and clamps 303 are set on the driving turntable 301 and the driven turntable 302 to clamp the photovoltaic panel. At the same time, the driving turntable 301 is driven by the transmission motor 304, so that the photovoltaic panel can adjust the angle or turn over, receive the laser light emitted by the laser generating device 202 at different angles, and enable the industrial camera 201 to image the photovoltaic panel from different angles, thus reducing the operation on the photovoltaic panel and achieving the effect of improving the detection efficiency.

[0032] Specifically, the transmission motor 304 is a servo motor. The transmission motor 304 is electrically and signal - connected to the console 103 and is controlled by the console 103.

[0033] Through the above technical solution, the transmission motor 304 is set as a servo motor, so that the rotation angle and speed of the driving turntable 301 can be accurately controlled by the PLC control device, enabling the photovoltaic panel to better match the angles of the industrial camera 201 and the laser generating device 202 for receiving light and imaging;

[0034] When the transmission motor 304 can be controlled by the console 103, it is more convenient to set the working mode of the transmission motor 304, improving the convenience of equipment use.

[0035] Specifically, the detection mechanism 2 includes an industrial camera 201 and a laser generating device 202. The industrial camera 201 is installed on the inner top of the equipment frame 101, and the visual field of the industrial camera 201 covers the interior of the equipment frame 101, so as to observe the photovoltaic panel within the largest range and image the photovoltaic panel.

[0036] The laser generating device 202 is installed on one side of the top of the equipment frame 101 to emit near-infrared light towards the photovoltaic panel.

[0037] Through the above technical solution, the industrial camera 201 set is used to image the photovoltaic panel, and the formed image information is transmitted to the console 103 for processing. The image processed by the console 103 is then displayed on the display screen 102 to facilitate human observation.

[0038] The laser generating device 202 set emits near-infrared light with a wave peak at about 1150 nm to irradiate the photovoltaic panel, so as to cooperate with the industrial camera 201 to realize the detection of the photovoltaic panel.

[0039] Specifically, the detection mechanism 2 further includes a wiring duct 203. One end of the wiring duct 203 is respectively led to the industrial camera 201 and the laser generating device 202, and the other end of the wiring duct 203 is led to the console 103. Both the industrial camera 201 and the laser generating device 202 are controlled by the console 103.

[0040] Through the above technical solution, the purpose of setting the wiring duct 203 is to protect the lines of the industrial camera 201 and the laser generating device 202, and make the lines of the industrial camera 201 and the laser generating device 202 enter the interior of the console 103 more beautifully.

[0041] The industrial camera 201 and the laser generating device 202 are set to be controlled by the console 103, so that the focal length and viewing angle of the industrial camera 201 can be adjusted through the console 103, and the power of the laser generating device 202 can be adjusted to adapt to different models of products.

[0042] Specifically, the laser generating device 202 includes a regulator 2021. A suspension rod 2022 is installed at the bottom of the regulator 2021, and a laser generator 2023 is installed at the bottom of the suspension rod 2022, and the angle of the laser generator 2023 is adjustable.

[0043] Through the above technical solution, a regulator 2021 is provided at the top of the equipment frame 101. The output power of the laser generator 2023 is adjusted by the regulator 2021 to adjust the peak frequency, so as to adapt to different types of products to be inspected. The laser generator 2023 is connected by a suspension rod 2022, so that the angle of the laser generator 2023 can also be finely adjusted to adapt to the heights of different products to be inspected, achieving the effect of improving adaptability.

[0044] Specifically, the fixture 303 includes a stepped platform with a horizontal top. Threaded holes are provided in the stepped platform, and bolts are threadedly connected in the threaded holes. The nuts of the bolts fix the edges of the photovoltaic panels.

[0045] Through the above technical solution, when installing the photovoltaic panel, first place the photovoltaic panel on the stepped platform, and then tighten the bolt so that the bottom of the bolt head applies pressure to the edge of the photovoltaic panel, thereby achieving the fixing effect.

[0046] If the size of the photovoltaic panel is small and double-sided inspection is not required, a support plate can be fixed between the active turntable 301 and the passive turntable 302, and then the photovoltaic panel is placed on the support plate for fixation.

[0047] During use, the active turntable 301 and the passive turntable 302 are symmetrically installed on the inner wall of the equipment frame 101, and fixtures 303 are provided on the active turntable 301 and the passive turntable 302 to clamp the photovoltaic panels. At the same time, the active turntable 301 is driven by a transmission motor 304, so that the photovoltaic panels can adjust the angle or flip, receive the laser emitted by the laser generating device 202 at different angles, and enable the industrial camera 201 to image the photovoltaic panels from different angles, achieving the effect of improving the detection efficiency.

[0048] Through the above technical solution, a regulator 2021 is provided at the top of the equipment frame 101. The output power of the laser generator 2023 is adjusted by the regulator 2021 to adjust the peak frequency, so as to adapt to different types of products to be inspected. The laser generator 2023 is connected by a suspension rod 2022, so that the angle of the laser generator 2023 can also be finely adjusted to adapt to the heights of different products to be inspected, achieving the effect of improving adaptability.

[0049] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic PL detection device, comprising a support mechanism (1), wherein a detection mechanism (2) is installed inside the support mechanism (1), and the detection mechanism (2) emits laser light and performs imaging on a photovoltaic cell panel respectively; Features: An angle adjustment mechanism (3) is also installed inside the support mechanism (1), and the angle adjustment mechanism (3) supports and adjusts the angle of the photovoltaic cell panel; The support mechanism (1) comprises a device frame (101), a display screen (102) and a control console (103) being mounted on the back of the device frame (101), the display screen (102) being used to display images, and the control console (103) being used to control the detection mechanism (2) and the angle adjustment mechanism (3); The angle adjustment mechanism (3) comprises an active rotating disk (301) and a passive rotating disk (302) symmetrically mounted on the inner wall of the equipment frame (101); the active rotating disk (301) and the passive rotating disk (302) are both rotatable; clamps (303) are mounted on opposite surfaces of the active rotating disk (301) and the passive rotating disk (302); the clamps (303) clamp the edge of the photovoltaic cell panel; a transmission motor (304) is mounted on the side of the active rotating disk (301); the transmission motor (304) drives the active rotating disk (301) to rotate.

2. A photovoltaic PL detection device according to claim 1, characterized in that: The transmission motor (304) is a servo motor, and the transmission motor (304) is electrically signal-connected to the control console (103) and is controlled by the control console (103).

3. A photovoltaic PL detection device according to claim 1, characterized in that: The detection mechanism (2) comprises an industrial camera (201) and a laser generating device (202), wherein the industrial camera (201) is installed on the inner top of the device frame (101), and the field of view of the industrial camera (201) covers the interior of the device frame (101); The laser generating device (202) is installed on one side of the top of the equipment frame (101) to emit near-infrared light toward the photovoltaic panel.

4. A photovoltaic PL detection device according to claim 3, characterized in that: The detection mechanism (2) further comprises a wiring trough (203), one end of the wiring trough (203) being respectively led to an industrial camera (201) and a laser generating device (202), and the other end of the wiring trough (203) being led to a control console (103), and both the industrial camera (201) and the laser generating device (202) are controlled by the control console (103).

5. A photovoltaic PL detection device according to claim 3, characterized in that: The laser generating device (202) comprises an adjuster (2021), a suspension rod (2022) is installed at the bottom of the adjuster (2021), a laser generator (2023) is installed at the bottom of the suspension rod (2022), and the angle of the laser generator (2023) is adjustable.

6. A photovoltaic PL detection device according to claim 1, characterized in that: The clamp (303) comprises a top horizontal step platform, a threaded hole is provided on the step platform, a bolt is threadedly connected in the threaded hole, and the nut of the bolt fixes the edge of the photovoltaic cell panel.

Images