Universal EL test equipment for photovoltaic module

Abstract

The utility model discloses a universal EL test device for a photovoltaic module. The utility model relates to a photovoltaic module production line, which comprises a first conveying line, a second conveying line, a first camera module, a supporting module, a second camera module and a carrying device, wherein the first camera module and the supporting module are arranged below the joint of the first conveying line and the second conveying line; the second camera module is arranged above the second conveying line; the carrying device is arranged between the first conveying line and the second conveying line and is used for carrying a photovoltaic module; the carrying device is provided with a test module which is conducted with a junction box of the photovoltaic module to realize EL test, and the first conveying line and the second conveying line are both provided with blocking and correcting mechanisms which are used for blocking and correcting the photovoltaic module; each of the first camera module and the second camera module comprises a plurality of infrared cameras and a plurality of visual detection cameras. According to the utility model, the EL test of the photovoltaic module and the double-sided appearance detection of the photovoltaic module can be completed, the detection efficiency is improved, and the photovoltaic module detection device can be adapted to photovoltaic modules of various types and various sizes, and has good versatility.

Description

Technical field

[0001] The utility model belongs to the technical field of photovoltaic component production, in particular to a universal EL testing device for photovoltaic components. [Background Technology]

[0002] Traditionally, the junction box of a photovoltaic module is not on the same side as the glass surface. For example, the junction box faces upward and the glass surface faces downward. An EL test device can be installed above the junction box to perform EL testing, and a line scanning device can be installed below the glass surface to inspect the appearance of the photovoltaic module. With the continuous advancement of photovoltaic technology, the types of photovoltaic modules are also constantly innovating. There are two types of flexible modules: one with a junction box on a different side and the other with a junction box on the same side. Generally, an EL test device is installed above the junction box to perform EL testing. Therefore, for flexible modules with a junction box on a different side, a line scanning device needs to be installed below the glass surface to inspect the appearance of the photovoltaic module. For flexible modules with a junction box on the same side, a line scanning device needs to be installed above the glass surface to inspect the appearance of the photovoltaic module. Therefore, if EL testing is required for both traditional photovoltaic modules and two different types of photovoltaic modules, it is necessary to be able to perform appearance inspections on both the top and bottom of the photovoltaic module. Moreover, flexible photovoltaic modules cannot be transported alone on the conveyor line and need to be placed on a supporting fixture first. The supporting fixture then transports the flexible photovoltaic module together. Therefore, a design is needed to be compatible with EL testing for both traditional photovoltaic modules and two different types of photovoltaic modules.

[0003] In the prior art, there are EL testing equipment designed for double-sided inspection of photovoltaic modules. For example, a photovoltaic module inspection device with Chinese patent authorization announcement number CN209046594U includes an electroluminescence tester, which includes a first infrared camera and a second infrared camera. The first infrared camera and the second infrared camera are respectively located above and below the discontinuity to capture images of the front and back of the photovoltaic module to be inspected. Although this solution can realize the appearance inspection of the top and bottom of the photovoltaic module, the flexible module is placed on the supporting tooling. If the back of the flexible module needs to be inspected, the supporting tooling blocks the second infrared camera below, and the inspection of the back of the flexible module cannot be completed.

[0004] Therefore, it is necessary to provide a universal EL testing device for photovoltaic modules to solve the above technical problems. [Utility Model Content]

[0005] The main purpose of the utility model is to provide a universal EL testing equipment for photovoltaic modules, which can complete the EL test of photovoltaic modules and the double-sided appearance inspection of photovoltaic modules, improve the efficiency of inspection, and can also adapt to photovoltaic modules of various types and sizes, with good versatility.

[0006] The utility model achieves the above-mentioned object through the following technical solutions: a universal EL testing device for photovoltaic modules, comprising a first conveyor line and a second conveyor line for conveying photovoltaic modules in the same direction, a first camera module and a support module arranged below the junction of the first conveyor line and the second conveyor line, a second camera module arranged above the second conveyor line, and a conveying device for conveying photovoltaic modules between the first conveyor line and the second conveyor line, wherein the conveying device is provided with a test module for conducting with a junction box of the photovoltaic module to realize EL testing, and the first conveyor line and the second conveyor line are both provided with a blocking and correcting mechanism for blocking and correcting the photovoltaic modules;

[0007] The first camera module and the second camera module both include several infrared cameras that cooperate with the test module to complete the EL test and several visual inspection cameras that inspect the appearance of the photovoltaic components.

[0008] Furthermore, the first conveyor line and the second conveyor line are connected to each other left and right along the X direction and an avoidance gap is provided between the first conveyor line and the second conveyor line, and the first camera module and the support module are provided below the avoidance gap.

[0009] Furthermore, the supporting module includes a supporting wheel for supporting the material and a first cylinder for driving the supporting wheel to move up and down or rotate around a horizontal axis.

[0010] Furthermore, the transport device includes an X-axis drive module, a first support plate driven by the X-axis drive module to move along the X direction, a first motor arranged on the first support plate, a column driven by the first motor to perform lifting and lowering movements, a grab frame arranged at the bottom of the column, and a plurality of sponge suction cups arranged at the bottom of the grab frame and for adsorbing photovoltaic components, wherein the sponge suction cups are provided with multiple adsorption holes.

[0011] Furthermore, the test module includes several test components arranged on the grab frame, and the test components include a second cylinder, a second support plate driven by the second cylinder to move up and down, and a test probe arranged on the second support plate. The upper end of the test probe is connected to the EL tester, and the lower end extends into the junction box of the photovoltaic component and contacts the copper sheet in the junction box.

[0012] Furthermore, the blocking and correcting mechanism includes a blocking component for blocking the photovoltaic components at the front end of the conveying, a first correcting component for correcting the rear end of the conveying of the photovoltaic components, and a second correcting component for correcting the two opposite sides of the photovoltaic components.

[0013] Furthermore, the blocking assembly includes a third cylinder and a blocking wheel driven by the third cylinder to move up and down;

[0014] The first alignment assembly includes a fourth cylinder, a third support plate driven by the fourth cylinder to move left and right, a fifth cylinder disposed on the third support plate, and a first alignment wheel driven by the fifth cylinder to move up and down;

[0015] The second alignment component includes a sixth cylinder, a moving frame driven by the sixth cylinder to move along the front-rear direction, and a plurality of second alignment wheels arranged on the moving frame.

[0016] Furthermore, the first return assembly and the second return assembly are both movably arranged on the slide rail and are locked and fixed by a locking member.

[0017] Furthermore, the first correcting component and the second correcting component are both movably arranged on a slide rail and driven by a servo motor to adjust their positions.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] (1) The first camera module disposed below the conveyor line and the second camera module disposed above the conveyor line both include a plurality of infrared cameras that cooperate with the test module to complete the EL test and a plurality of visual inspection cameras that inspect the appearance of the photovoltaic modules. Therefore, the EL test of the photovoltaic modules and the double-sided appearance inspection of the photovoltaic modules can be completed, thereby improving the efficiency of the inspection;

[0020] (2) It can conduct EL testing and double-sided appearance inspection on conventional photovoltaic modules and flexible photovoltaic modules. Even if the flexible photovoltaic module group needs to be placed on the supporting tooling, the provided transport device can lift the photovoltaic module to the set height. After the supporting tooling is conveyed to the second conveyor line, the first camera module and the second camera module can complete the photographing of the flexible photovoltaic module, and cooperate to complete the EL test of the photovoltaic module and the double-sided appearance inspection of the photovoltaic module. It has high versatility and can adapt to various types of photovoltaic modules.

[0021] (3) A support module is provided at the avoidance gap. When the material line on the first conveyor line is conveyed to the second conveyor line, the support module supports the material to smoothly enter the second conveyor line, which can facilitate the smooth conveyance of the material on the first conveyor line to the second conveyor line;

[0022] (4) The test module is provided with several test components. For photovoltaic modules of different sizes or junction boxes at different positions of photovoltaic modules, the test components at corresponding positions can be selected for testing. Moreover, the blocking and correcting mechanism can also adapt to photovoltaic modules of different sizes, and has high versatility.

Brief Description of the Drawings

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of a universal EL testing device for photovoltaic modules according to an embodiment of the present utility model;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the first conveyor line and the second conveyor line in an embodiment of the present utility model;

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of the first camera module and the support module according to an embodiment of the present utility model;

[0026] Figure 4 This is a schematic diagram of the three-dimensional structure of the transport device and the test module according to an embodiment of the utility model;

[0027] Figure 5 This is a schematic diagram of the three-dimensional structure of the test assembly according to an embodiment of the present utility model;

[0028] The numbers in the figure represent:

[0029] 100-General EL test equipment for photovoltaic modules;

[0030] 1-first conveyor line; 2-second conveyor line; 3-first camera module; 4-support module; 5-second camera module;

[0031] 6-handling device, 61-X-axis drive module, 62-first support plate, 63-first motor, 64-column, 65-grip frame, 66-sponge suction cup;

[0032] 7-test module, 71-test assembly, 711-second cylinder, 712-second support plate, 713-test probe;

[0033] 8-blocking and correcting mechanism, 81-blocking assembly, 811-third cylinder, 812-blocking wheel, 82-first correcting assembly, 821-fourth cylinder, 823-fifth cylinder, 824-first correcting wheel, 83-second correcting assembly, 831-sixth cylinder, 832-moving frame, 833-second correcting wheel;

[0034] 9-Avoidance gap. [Specific implementation method]

[0035] Please refer to Figure 1-Figure 5This embodiment is a universal EL testing device for photovoltaic modules, which is used for EL testing of traditional photovoltaic modules and flexible photovoltaic modules. Since flexible photovoltaic modules cannot be directly transported on the conveyor line, the flexible photovoltaic modules need to be placed on the supporting tooling, and the supporting tooling is transported together with the flexible photovoltaic modules. In this embodiment, the supporting tooling is a plastic plate that is shaped like the flexible photovoltaic module. In other embodiments, the supporting tooling can be set according to actual conditions and is not limited here.

[0036] The universal EL testing equipment 100 for photovoltaic modules includes a first conveyor line 1 and a second conveyor line 2 for conveying photovoltaic modules in the same direction, a first camera module 3 and a support module 4 arranged below the junction of the first conveyor line 1 and the second conveyor line 2, a second camera module 5 arranged above the second conveyor line 2, and a conveying device 6 for conveying photovoltaic modules between the first conveyor line 1 and the second conveyor line 2. The conveying device 6 is provided with a test module 7 that is connected to the junction box of the photovoltaic module to realize EL testing. The first conveyor line 1 and the second conveyor line 2 are both provided with a blocking and correcting mechanism 8 for blocking and correcting the photovoltaic modules.

[0037] The first conveyor line 1 and the second conveyor line 2 are connected to each other left and right along the X direction for conveying photovoltaic modules, and an avoidance gap 9 is set between the first conveyor line 1 and the second conveyor line 2. The first camera module 3 and the support module 4 are arranged below the avoidance gap 9 to facilitate the first camera module 3 to take pictures of the photovoltaic modules above from below, and prevent the conveyor line from blocking the photovoltaic modules and not taking full pictures, thereby affecting the first camera module 3 from taking pictures of the photovoltaic modules; since the first conveyor line 1 and the second conveyor line 2 are disconnected and provided with an avoidance gap, in order to facilitate the smooth conveyance of materials on the first conveyor line 1 to the second conveyor line 2, a support module 4 is provided at the avoidance gap 9, and the support module 4 supports the materials to smoothly enter the second conveyor line 2.

[0038] The supporting module 4 includes a supporting wheel for supporting the material and a first cylinder for driving the supporting wheel to move up and down or rotate around a horizontal axis.

[0039] The transport device 6 includes an X-axis drive module 61, a first support plate 62 driven by the X-axis drive module 61 to move along the X direction, a first motor 63 arranged on the first support plate 62, a column 64 driven by the first motor 63 to perform lifting movement, a grab frame 65 arranged at the bottom of the column 64, and a plurality of sponge suction cups 66 arranged at the bottom of the grab frame 65 and for adsorbing photovoltaic components, and a plurality of adsorption holes are provided on the sponge suction cups 66.

[0040] The X-axis driving module 61 is a servo motor driving a transmission belt to move. The first support plate 62 is set on the transmission belt through a belt clamp. The servo motor drives the transmission belt to drive the first support plate 62 to move along the X direction.

[0041] The test module 7 is mounted on the gripper frame 65. To enhance its versatility, it includes several test assemblies 71 mounted on the gripper frame 65. For testing the junction box at different locations on the photovoltaic module, the test assembly 71 corresponding to the location is selected. The test assembly 71 includes a second cylinder 711, a second support plate 712 driven up and down by the second cylinder 711, and a test probe 713 mounted on the second support plate 712. The upper end of the test probe 713 is connected to the EL tester, while the lower end extends into the junction box of the photovoltaic module, contacting and conducting with the copper sheet inside the junction box.

[0042] The first camera module 3 and the second camera module 5 both include several infrared cameras that cooperate with the test module 7 to complete the EL test and several visual inspection cameras that inspect the appearance of the photovoltaic module. The first camera module 3 is also provided with sun visors around it, which can improve the image quality and reduce glare and reflection when the camera is working. When the EL test is required, the lower end of the test probe 713 is inserted into the junction box of the photovoltaic module and contacts the copper sheet in the junction box to conduct, and then a voltage is applied. The infrared camera is used to take a picture of the glass surface of the photovoltaic module, and the image is converted into a black and white photo on the computer. The magnitude of the current determines the brightness of the image. According to the brightness and size of the image, it is judged whether the internal part of the component is defective, such as hidden cracks, splinters or broken grids. The visual inspection camera takes a picture of the outside of the component to confirm whether there are impurities, dust or foreign matter on the surface of the photovoltaic module. Infrared cameras and visual inspection cameras jointly complete the internal and external inspection of photovoltaic modules. Infrared cameras are set up above and below, which can take pictures of photovoltaic modules from top to bottom and bottom, and are suitable for different types of photovoltaic modules. In addition, left and right visual inspection cameras are set up above and below, which can perform appearance inspection on both sides of the photovoltaic modules, which can improve the efficiency of inspection.

[0043] The blocking and correcting mechanism 8 includes a blocking component 81 for blocking the photovoltaic components at the front end of the conveying, a first correcting component 82 for correcting the rear end of the photovoltaic components, and a second correcting component 83 for correcting the two opposite sides of the photovoltaic components.

[0044] The blocking assembly 81 includes a third cylinder 811 and a blocking wheel 812 driven by the third cylinder 811 to move up and down.

[0045] The first alignment assembly 82 includes a fourth cylinder 821 , a third support plate driven by the fourth cylinder 821 to move left and right, a fifth cylinder 823 disposed on the third support plate, and a first alignment wheel 824 driven by the fifth cylinder 823 to move up and down.

[0046] The second alignment assembly 83 includes a sixth cylinder 831 , a moving frame 832 driven by the sixth cylinder 831 to move in the front-rear direction, and a plurality of second alignment wheels 833 provided on the moving frame 832 .

[0047] To improve the versatility of the blocking and correcting mechanism 8 and adapt it to photovoltaic modules of different sizes, the first correcting assembly 82 and the second correcting assembly 83 are both movable. The movable first correcting assembly 82 and the second correcting assembly 83 are both arranged in a sliding rail manner and are locked by screws. When the position needs to be adjusted, the screws can be loosened and then tightened again after adjustment. The movable first correcting assembly 82 and the second correcting assembly 83 are both arranged in a sliding rail manner and are driven by a servo motor for automatic position adjustment, so that when changing the template, a one-button switch can be used in the control system.

[0048] The present invention provides a universal EL testing device 100 for photovoltaic modules, which can perform EL testing on conventional photovoltaic modules whose junction boxes and glass surfaces are not on the same side. For example, the junction box faces upward and the glass surface faces downward. The photovoltaic module enters the first conveyor line 1. The blocking component 81 on the first conveyor line 1 blocks the module from continuing to be conveyed forward. The first correcting component 82 and the second correcting component 83 correct the other three sides of the module to complete the correction of the four sides of the photovoltaic module. The conveying device 6 starts to work. The X-axis drive module 61 and the first motor 63 work together to move the gripper frame 65 to the top of the photovoltaic module. One of the test components 71 of the test module 7 is just located above the junction box of the photovoltaic module. The second cylinder 711 drives the test probe 713 to extend into the junction box of the photovoltaic module. After the test probe 713 contacts and conducts with the copper sheet in the junction box, voltage is applied. The second cylinder 711 drives the test probe 713 to rise. At the same time, the first motor 63 drives the column 64 to further descend so that the sponge The suction cup 66 absorbs the photovoltaic component, and the first motor 63 drives the column 64 to rise to raise the photovoltaic component to a set height. Preferably, the height of the photovoltaic component from the first conveyor line 1 is 500 mm. The X-axis drive module 6 drives the first support plate 62 to move slowly toward the side of the second conveyor line 2, and the first camera module 3 below starts working. The infrared camera and the visual inspection camera of the first camera module 3 continuously take pictures of the lower surface of the photovoltaic component. After the picture is taken, the X-axis drive module 61 drives the gripper frame 65 to move further to the top of the second conveyor line 2, and the first motor 63 drives the column 64 to descend to place the photovoltaic component on the second conveyor line 2. The blocking and correcting mechanism 8 completes the correction of the four sides of the photovoltaic component, and the second conveyor line 2 conveys the photovoltaic component to the bottom of the second camera module 5. The visual inspection camera of the second camera module 5 completes continuous photography of the upper surface of the photovoltaic component, completes the EL test of the photovoltaic component and the appearance inspection of both sides of the photovoltaic component, and the photovoltaic component is conveyed to the next workstation.

[0049] The present invention provides a universal EL test device 100 for photovoltaic modules, which can perform EL testing on flexible photovoltaic modules whose junction box and glass surface are not on the same side. For example, the junction box is facing upwards, the glass surface is facing downwards, and the flexible photovoltaic module is placed on a supporting tool. The photovoltaic module and the supporting tool enter the first conveyor line 1. The blocking component 81 on the first conveyor line 1 blocks the photovoltaic module and the supporting tool from continuing to be conveyed forward. The first correcting component 82 and the second correcting component 83 correct the other three sides of the module. After the correction of the four sides of the photovoltaic module and the supporting tool is completed, the transport device 6 is opened. The X-axis drive module 61 and the first motor 63 work together to move the gripper 65 to the top of the photovoltaic module. One of the test components 71 of the test module 7 is just above the junction box of the photovoltaic module. The second cylinder 711 drives the test probe 713 to extend into the junction box of the photovoltaic module. After the test probe 713 contacts and conducts with the copper sheet in the junction box, voltage is applied. The second cylinder 711 drives the test probe 713 to rise. At the same time, the first motor 63 drives the column 64 to further descend so that the sponge suction cup 66 absorbs the photovoltaic module. The first motor 63 drives the column 6 4 rises to raise the photovoltaic module to the set height. Preferably, the height of the photovoltaic module from the first conveyor line 1 is 500mm. The first conveyor line 1 conveys the supporting tooling to the second conveyor line 2. When passing through the avoidance gap 9, the first cylinder of the support module 4 drives the supporting wheel to support the supporting tooling to smoothly enter the second conveyor line 2. The blocking and correcting mechanism 8 of the second conveyor line 2 corrects the supporting tooling in all directions. The X-axis drive module 6 drives the first support plate 62 to move slowly toward the side of the second conveyor line 2. The infrared camera of the first camera module 3 below and the visual detection camera focus on the photovoltaic module. The lower surface of the component is photographed continuously. After the photography is completed, the X-axis drive module 61 drives the gripper frame 65 to move further above the second conveyor line 2. The first motor 63 drives the column 64 to descend and place the photovoltaic component on the supporting tooling. The blocking and correcting mechanism 8 completes the four-side correction of the photovoltaic component. When the photovoltaic component and the supporting tooling are conveyed to the bottom of the second camera module 5, the visual inspection camera of the second camera module 5 completes continuous photography of the upper surface of the photovoltaic component, completes the EL test of the photovoltaic component and the appearance inspection of both sides of the photovoltaic component, and the photovoltaic component is conveyed to the next workstation.

[0050] The present invention provides a universal EL test device 100 for photovoltaic modules, which can perform EL testing on flexible photovoltaic modules with the junction box and the glass surface on the same side. For example, the junction box is facing upward, the glass surface is facing upward, and the flexible photovoltaic module is placed on the supporting tooling. The photovoltaic module and the supporting tooling enter the first conveyor line 1. The blocking component 81 on the first conveyor line 1 blocks the photovoltaic module and the supporting tooling from continuing to be conveyed forward. The first correcting component 82 and the second correcting component 83 correct the other three sides of the photovoltaic module, completing the correction of the four sides of the photovoltaic module and the supporting tooling. , the handling device 6 starts to work, the X-axis drive module 61 and the first motor 63 work together to move the gripper 65 to the top of the photovoltaic module, the first motor 63 drives the column 64 to further descend so that the sponge suction cup 66 absorbs the photovoltaic module, and the first motor 63 drives the column 64 to rise so that the photovoltaic module rises to the set height. Preferably, the height of the photovoltaic module from the first conveyor line 1 is 500mm. The first conveyor line 1 conveys the supporting tooling to the second conveyor line 2. When passing the avoidance gap 9, the first cylinder of the support module 4 drives the supporting wheel to support the supporting tooling The device smoothly enters the second conveyor line 2, the blocking and correcting mechanism 8 corrects the supporting tooling on all sides, the X-axis driving module 6 drives the first supporting plate 62 to move slowly toward the side of the second conveyor line 2, and the visual inspection camera of the first camera module 3 below continuously takes pictures of the lower surface of the photovoltaic module. After the pictures are taken, the X-axis driving module 61 drives the gripper frame 65 to move further to the top of the second conveyor line 2, and the first motor 63 drives the column 64 to descend and place the photovoltaic module on the supporting tooling. One of the test components 71 of the test module 7 is just located at the photovoltaic module Directly above the junction box, the second cylinder 711 drives the test probe 713 to extend into the junction box of the photovoltaic module. After the test probe 713 contacts and conducts with the copper sheet in the junction box, voltage is applied. The second cylinder 711 drives the test probe 713 to rise, and the second conveyor line 2 conveys the supporting tooling and photovoltaic module to the bottom of the second camera module 5. The infrared camera and visual inspection camera of the second camera module 5 continuously take pictures of the upper surface of the photovoltaic module to complete the EL test of the photovoltaic module and the appearance inspection of both sides of the photovoltaic module. The photovoltaic module is then conveyed to the next workstation.

[0051] The above descriptions are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A universal EL test equipment for photovoltaic modules, characterized by: It includes a first conveyor line and a second conveyor line for conveying photovoltaic modules in the same direction, a first camera module and a support module arranged below the junction of the first conveyor line and the second conveyor line, a second camera module arranged above the second conveyor line, and a conveying device for conveying photovoltaic modules between the first conveyor line and the second conveyor line, wherein the conveying device is provided with a test module for conducting with the junction box of the photovoltaic module to realize EL testing, and the first conveyor line and the second conveyor line are both provided with a blocking and correcting mechanism for blocking and correcting the photovoltaic modules; The first camera module and the second camera module both include several infrared cameras that cooperate with the test module to complete the EL test and several visual inspection cameras that inspect the appearance of the photovoltaic components.

2. A photovoltaic module universal EL testing device according to claim 1, characterized in that: The first conveyor line and the second conveyor line are butted against each other in the left and right directions along the X direction and a clearance is provided between the first conveyor line and the second conveyor line. The first camera module and the support module are provided below the clearance.

3. The photovoltaic module universal EL testing device according to claim 1, characterized in that: The supporting module includes a supporting wheel for supporting the material and a first cylinder for driving the supporting wheel to move up and down or rotate around a horizontal axis.

4. The photovoltaic module universal EL testing device according to claim 1, characterized in that: The transport device includes an X-axis drive module, a first support plate driven by the X-axis drive module to move along the X direction, a first motor arranged on the first support plate, a column driven by the first motor to perform lifting movement, a gripper frame arranged at the bottom of the column, and several sponge suction cups arranged at the bottom of the gripper frame and for adsorbing photovoltaic components, wherein the sponge suction cups are provided with multiple adsorption holes.

5. A photovoltaic module universal EL testing device according to claim 4, characterized in that: The test module includes several test components arranged on the grab frame, and the test components include a second cylinder, a second support plate driven by the second cylinder to move up and down, and a test probe arranged on the second support plate. The upper end of the test probe is connected to the EL tester, and the lower end extends into the junction box of the photovoltaic component and contacts and conducts with the copper sheet in the junction box.

6. The photovoltaic module universal EL testing device according to claim 1, characterized in that: The blocking and correcting mechanism includes a blocking component for blocking the photovoltaic components at the front end of the conveying, a first correcting component for correcting the rear end of the photovoltaic components, and a second correcting component for correcting the two opposite sides of the photovoltaic components.

7. A photovoltaic module universal EL testing device according to claim 6, characterized in that: The blocking assembly includes a third cylinder and a blocking wheel driven by the third cylinder to move up and down; The first alignment assembly includes a fourth cylinder, a third support plate driven by the fourth cylinder to move left and right, a fifth cylinder disposed on the third support plate, and a first alignment wheel driven by the fifth cylinder to move up and down; The second alignment component includes a sixth cylinder, a moving frame driven by the sixth cylinder to move along the front-rear direction, and a plurality of second alignment wheels arranged on the moving frame.

8. The photovoltaic module universal EL testing device according to claim 6, characterized in that: The first return assembly and the second return assembly are both movably arranged on the slide rail and are locked and fixed by a locking member.

9. The photovoltaic module universal EL testing device according to claim 6, characterized in that: The first return assembly and the second return assembly are both movably arranged on the slide rail and driven by a servo motor to adjust their positions.

Images