EL test equipment capable of automatically plugging photovoltaic module junction box lead

Abstract

The utility model discloses an EL test device capable of automatically plugging a photovoltaic module junction box lead, comprising a conveying line used for conveying a photovoltaic module; the junction box positive electrode plug grabbing mechanism is used for grabbing a positive electrode plug of a junction box on the photovoltaic module to a plugging position; the junction box negative electrode plug grabbing mechanism is used for grabbing a negative electrode plug of a junction box on the photovoltaic module to a plugging position; and the test tool plugging mechanism is used for plugging the positive electrode plug of the test tool with the positive electrode plug of the junction box and plugging the negative electrode plug of the test tool with the negative electrode plug of the junction box. The utility model provides an EL test device capable of automatically plugging a photovoltaic module junction box lead, which can automatically plug the photovoltaic module junction box lead into a test tool, realize automatic wire plugging and EL detection, greatly improve efficiency, omit the use of a test tool mode, reduce the number of devices, reduce the use field, reduce the cost and improve the production efficiency. The maintenance is simple.

Description

Technical Field

[0001] This utility model relates to an EL testing device for automatically connecting the leads of photovoltaic module junction boxes, belonging to the field of photovoltaic module EL testing technology. Background Technology

[0002] Currently, photovoltaic (PV) module electroluminescence (EL) testing involves pressing the positive and negative electrode probes of the EL testing equipment onto the copper blocks of the positive and negative leads of the testing fixture to conduct an electrical test. The positive and negative busbars of the PV module are soldered together through a junction box, and then led out through the positive and negative leads on the junction box body. The metal conductors on the positive and negative leads of the junction box are wrapped in an outer plastic shell, which is called the quick-connect lead plug for the positive and negative terminals of the junction box.

[0003] Electron (EL) testing of photovoltaic (PV) modules requires connecting wires. Therefore, current technology involves adding testing fixtures to the quick-connect connectors of the PV module junction box to expose the positive and negative electrodes, facilitating contact with the power-on probes. However, installing these fixtures increases both manpower and the recurring costs of purchasing and maintaining them. To achieve automation, most current methods employ automated testing with robotic arms using the fixtures and robotic arms operating independently.

[0004] However, the exposed copper blocks of the tooling will oxidize, and the tooling maintenance increases the equipment maintenance cost. The addition of upper and lower tooling equipment greatly increases the production input and workshop space occupation, and increases the length of the production line and the difficulty of maintenance. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an EL testing device that automatically connects the junction box leads of photovoltaic modules. It can automatically connect the junction box leads of photovoltaic modules to the testing fixture, realize automatic connection and EL testing, which can greatly improve efficiency, eliminate the use of testing fixtures and reduce equipment, reduce the space required, lower cost and simplify maintenance.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0007] An EL testing device for automatically connecting photovoltaic module junction box leads, comprising:

[0008] Conveyor lines are used to transport photovoltaic modules;

[0009] The junction box positive plug gripping mechanism is used to grip the positive plug of the junction box on the photovoltaic module and place it in the insertion position;

[0010] The junction box negative plug gripping mechanism is used to grip the negative plug of the junction box on the photovoltaic module and place it in the plugging position;

[0011] The test fixture plugging mechanism is used to plug the positive plug of the test fixture into the positive plug of the junction box, and to plug the negative plug of the test fixture into the negative plug of the junction box.

[0012] The moving mechanism is used to move the test fixture insertion mechanism, the junction box positive plug gripping mechanism, and the junction box negative plug gripping mechanism as a whole.

[0013] Furthermore, the conveyor line includes a conveyor motor, a first transmission belt, a first driving pulley, a first driven pulley, a drive shaft, and multiple belt conveyor assemblies. The first driving pulley is fixed on the motor shaft of the conveyor motor, and the first driven pulley is fixed on the drive shaft. The first driving pulley is connected to the first driven pulley via the first transmission belt. The drive shaft provides power to the multiple belt conveyor assemblies, and photovoltaic modules are placed on the belt conveyor assemblies.

[0014] Furthermore, the moving mechanism includes a top support, a moving motor, a second transmission belt, a second driving pulley, a second driven pulley, a hanging plate, and a moving plate. The moving motor is fixed to one end of the top support, the second driving pulley is fixed to the motor shaft of the moving motor, the second driven pulley is fixed to the other end of the top support, the second driving pulley is connected to the second driven pulley via the second transmission belt, the hanging plate is fixed to the second transmission belt, and the moving plate is connected to the bottom of the hanging plate.

[0015] Furthermore, the test fixture insertion mechanism includes a vertical plate, a table, a positive electrode insertion assembly for the test fixture, and a negative electrode insertion assembly for the test fixture. The vertical plate is connected to the bottom of the movable plate, and the table is connected to the bottom of the vertical plate. The positive electrode insertion assembly for the test fixture and the negative electrode insertion assembly for the test fixture are respectively fixed to both ends of the bottom surface of the table.

[0016] Furthermore, the positive electrode connection assembly and the negative electrode connection assembly of the test fixture have the same structure.

[0017] Furthermore, the positive terminal plug assembly of the test fixture includes a test fixture motor lead screw and slider mechanism, a mounting plate, and a clamp. The test fixture motor lead screw and slider mechanism is fixed to the bottom surface of the table, and the test fixture motor lead screw and slider mechanism drives the mounting plate to move in the Z-axis direction. The clamp is fixed to the bottom surface of the mounting plate and is used to clamp the positive terminal plug of the test fixture.

[0018] Furthermore, the junction box positive plug gripping mechanism and the junction box negative plug gripping mechanism have the same structure.

[0019] Furthermore, the junction box positive plug gripping mechanism includes a Z-axis moving component, an X-axis moving component, a rotation adjustment component, a Y-axis moving component, a junction box gripper assembly, and a coaxial vision inspection device. The Z-axis moving component drives the X-axis moving component to move in the Z-axis direction. The X-axis moving component drives the rotation adjustment component, the Y-axis moving component, and the coaxial vision inspection device to move in the X-axis direction. The Y-axis moving component is connected to the rotation adjustment component and drives the Y-axis moving component to rotate. The junction box gripper assembly is connected to the Y-axis moving component and drives the junction box gripper assembly to move in the Y-axis direction.

[0020] Furthermore, the junction box gripper assembly includes a double-headed cylinder and grippers. The double-headed cylinder is connected to the Y-axis moving assembly, and the two grippers are respectively fixed on the two piston rods of the double-headed cylinder.

[0021] Furthermore, it also includes an EL inspection camera, which is positioned below the conveyor line.

[0022] By adopting the above technical solution, this utility model uses a junction box positive plug gripping mechanism to grip the positive plug of the junction box on the photovoltaic module to the insertion position, and a junction box negative plug gripping mechanism to grip the negative plug of the junction box on the photovoltaic module to the insertion position. Finally, a test fixture insertion mechanism inserts the positive plug of the test fixture into the positive plug of the junction box and the negative plug of the test fixture into the negative plug of the junction box, thereby realizing the automatic insertion of the junction box leads of the photovoltaic module into the test fixture. This utility model reduces costs, occupies little space, and is relatively simple to maintain in the later stage, requiring little difficulty. It is easy for users to learn and can significantly improve testing efficiency. Attached Figure Description

[0023] Figure 1 This is a front view of the EL testing equipment for automatically connecting photovoltaic module junction box leads according to this utility model.

[0024] Figure 2 This is a schematic diagram of the conveyor line of this utility model;

[0025] Figure 3 This is a diagram showing the working state of the blocking mechanism and the regulating mechanism of this utility model;

[0026] Figure 4 This is a schematic diagram of the blocking mechanism and the regulating mechanism of this utility model;

[0027] Figure 5 This is a schematic diagram of the moving mechanism, the test fixture insertion mechanism, the junction box positive plug gripping mechanism, and the junction box negative plug gripping mechanism of this utility model.

[0028] Figure 6 This is a schematic diagram of the structure of the moving mechanism of this utility model;

[0029] Figure 7 This is a schematic diagram of the positive electrode plug-in assembly of the test fixture of this utility model;

[0030] Figure 8 This is a schematic diagram of the junction box positive plug gripping mechanism of this utility model;

[0031] Figure 9 This is a schematic diagram of the structure of the EL detection camera of this utility model. Detailed Implementation

[0032] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0033] like Figures 1-9 As shown, this embodiment provides an EL testing device for automatically connecting photovoltaic module junction box leads, which includes:

[0034] Conveyor line 1 is used to transport photovoltaic modules 2.

[0035] The junction box positive plug gripping mechanism 4 is used to grip the positive plug 31 of the junction box on the photovoltaic module 2 and place it into the insertion position.

[0036] The junction box negative plug gripping mechanism 5 is used to grip the negative plug 32 of the junction box on the photovoltaic module 2 and place it into the plugging position.

[0037] The test fixture insertion mechanism 6 is used to connect the positive plug 81 of the test fixture to the positive plug 31 of the junction box, and to connect the negative plug 82 of the test fixture to the negative plug 32 of the junction box.

[0038] The moving mechanism 7 is used to move the test fixture insertion mechanism 6, the junction box positive plug gripping mechanism 4, and the junction box negative plug gripping mechanism 5 as a whole.

[0039] EL inspection camera 9 is used to perform EL inspection on photovoltaic module 2 after it is powered on.

[0040] The frame 10 is used to mount the conveyor line 1, the junction box positive plug gripping mechanism 4, the test fixture insertion mechanism 6, the moving mechanism 7, and the EL detection camera 9. Specifically, the conveyor line 1 is installed in the middle of the frame 10, the junction box positive plug gripping mechanism 4, the test fixture insertion mechanism 6, and the moving mechanism 7 are all installed above the conveyor line 1, and the EL detection camera 9 is installed below the conveyor line 1.

[0041] like Figure 2As shown, the conveyor line 1 in this embodiment includes a conveyor motor 11, a first transmission belt 12, a first driving pulley 13, a first driven pulley 14, a drive shaft 15, and multiple belt conveyor assemblies 16. The first driving pulley 13 is fixed on the motor shaft of the conveyor motor 11, and the first driven pulley 14 is fixed on the drive shaft 15. The first driving pulley 13 is connected to the first driven pulley 14 through the first transmission belt 12. The drive shaft 15 provides power to the multiple belt conveyor assemblies 16, and photovoltaic modules 2 are placed on the belt conveyor assemblies 16. When transporting the photovoltaic modules 2, the conveyor motor 11 is started. The conveyor motor 11 drives the drive shaft 15 to rotate through the first transmission belt 12 and the pulleys. The drive shaft 15 then simultaneously drives the driving pulleys on the multiple belt conveyor assemblies 16 to rotate. The driving pulleys on the belt conveyor assemblies 16 transport the photovoltaic modules 2 through the transmission cooperation of the driving pulleys, belts, and driven pulleys mounted on the drive shaft 15.

[0042] like Figure 3 As shown, the frame 10 in this embodiment is also equipped with a blocking mechanism and a straightening mechanism. After the photovoltaic module 2 enters the conveyor line 1, the photovoltaic module 2 reaches the straightening position and is straightened by the straightening mechanism. After the straightening is in place, the photovoltaic module 2 continues to be conveyed and stops when it reaches the straightening mechanism. The position of the photovoltaic module 2 on the conveyor line 1 is straightened and positioned.

[0043] like Figure 4 As shown, the straightening mechanism in this embodiment includes a straightening wheel 101, a straightening cylinder 102, a straightening wheel connecting plate 103, and a straightening wheel mounting profile 104. The straightening cylinder 102 is mounted on the frame 10, and the straightening wheel connecting plate 103 is mounted on the piston rod of the straightening cylinder 102. A straightening wheel mounting profile 104 is mounted at each end of the straightening wheel connecting plate 103, and a straightening wheel 101 is mounted on each straightening wheel mounting profile 104. The straightening cylinder 102 drives the straightening wheel connecting plate 103 to slide on the frame 10. A slider is located at the bottom of the straightening wheel connecting plate 103, and a slide rail that slides in cooperation with the slider is mounted on the frame 10. The straightening wheel connecting plate 103 then drives the straightening wheel 101 on the straightening wheel mounting profile 104 to move, straightening the photovoltaic module 2.

[0044] like Figure 4 As shown, the blocking mechanism in this embodiment includes a blocking mechanism profile 105, a blocking wheel mounting plate 106, and a blocking wheel 107. One end of the blocking mechanism profile 105 is fixed on the regular wheel mounting profile 104, the blocking wheel mounting plate 106 is fixed on the other end of the blocking mechanism profile 105, and the blocking wheel 107 is mounted on the blocking wheel mounting plate 106. During the process of the photovoltaic module 2 entering the conveyor line 1, the blocking wheel 107 limits and blocks the photovoltaic module 2.

[0045] like Figure 5 , 6As shown, the moving mechanism 7 in this embodiment includes a top bracket 71, a moving motor 72, a second transmission belt 73, a second driving pulley, a second driven pulley 75, a hanging plate 76, and a moving plate 77. The moving motor 72 is fixed to one end of the top bracket 71, the second driving pulley is fixed to the motor shaft of the moving motor 72, the second driven pulley 75 is fixed to the other end of the top bracket 71, the second driving pulley is connected to the second driven pulley 75 through the second transmission belt 73, the hanging plate 76 is fixed to the second transmission belt 73, and the moving plate 77 is connected to the bottom of the hanging plate 76. After the mobile motor 72 is started, it drives the hanging plate 76 to move in the Z-axis direction through the transmission cooperation of the second driving pulley, the second transmission belt 73 and the second driven pulley 75. The hanging plate 76 then drives the moving plate 77 to move along the bottom surface of the top bracket 71 through the slider and the slide rail. Finally, the moving plate 77 can drive the test fixture plugging mechanism 6, the junction box positive plug gripping mechanism 4 and the junction box negative plug gripping mechanism 5 to move as a whole in the Z-axis direction, thereby adjusting the position of each mechanism on the photovoltaic module 2.

[0046] like Figure 5 As shown, the test fixture insertion mechanism 6 in this embodiment includes a vertical plate 61, a table 62, a positive electrode insertion assembly 63, and a negative electrode insertion assembly 64. The vertical plate 61 is connected to the bottom of the movable plate 77, and the table 62 is connected to the bottom of the vertical plate 61. The positive electrode insertion assembly 63 and the negative electrode insertion assembly 64 are respectively fixed to both ends of the bottom surface of the table 62. The positive electrode insertion assembly 63 is used to insert the positive electrode plug 81 of the test fixture into the positive electrode plug 31 of the junction box, and the negative electrode insertion assembly 64 is used to insert the negative electrode plug 82 of the test fixture into the negative electrode plug 32 of the junction box. The positive electrode insertion assembly 63 and the negative electrode insertion assembly 64 of the test fixture in this embodiment have the same structure. The following description uses the positive electrode insertion assembly 63 as an example:

[0047] like Figure 7As shown, the positive terminal plug assembly 63 of the test fixture includes a test fixture motor lead screw and slider mechanism 631, a mounting plate 632, and a clamp 633. The test fixture motor lead screw and slider mechanism 631 is fixed to the bottom surface of the table 62. The test fixture motor lead screw and slider mechanism 631 drives the mounting plate 632 to move in the Z-axis direction. The clamp 633 is fixed to the bottom surface of the mounting plate 632 and is used to clamp the positive terminal plug 81 of the test fixture. When the junction box positive terminal plug gripping mechanism 4 clamps the positive terminal plug 31 of the junction box from the photovoltaic module 2, and then moves the positive terminal plug 31 of the junction box to the plugging position, the motor of the lead screw and slider mechanism drives the lead screw to rotate. The slider can then move within the frame of the lead screw and slider mechanism. The slider drives the mounting plate 632 and the clamp 633 to move toward the positive terminal plug 31 of the junction box. Finally, the clamp 633 plugs the positive terminal plug 81 of the test fixture and the positive terminal plug 31 of the junction box together. The working principle of the negative terminal plug-in assembly 64 of the test fixture is the same.

[0048] like Figure 5 , 8 As shown, the junction box positive plug gripping mechanism 4 and the junction box negative plug gripping mechanism 5 have the same structure in this embodiment. The following description uses the junction box positive plug gripping mechanism 4 as an example:

[0049] like Figure 8 As shown, the junction box positive plug gripping mechanism 4 of this embodiment includes a Z-axis moving component, an X-axis moving component, a rotation adjustment component, a Y-axis moving component, a junction box gripper assembly, and a coaxial vision inspection device. The Z-axis moving component is used to drive the X-axis moving component to move in the Z-axis direction. The X-axis moving component is used to drive the rotation adjustment component, the Y-axis moving component, and the coaxial vision inspection device to move in the X-axis direction. The Y-axis moving component is connected to the rotation adjustment component, and the rotation adjustment component is used to drive the Y-axis moving component to rotate. The junction box gripper assembly is connected to the Y-axis moving component, and the Y-axis moving component is used to drive the junction box gripper assembly to move in the Y-axis direction.

[0050] During operation, after the photovoltaic module 2 is neatly positioned on the conveyor line 1, the coaxial vision inspection device takes a picture of the junction box 3 on the photovoltaic module 2 to determine the position coordinates and angle deviation values ​​of the positive plug 31 and the negative plug 32 of the junction box 3.

[0051] Then, based on the position coordinates of junction box 3, the position of the junction box positive plug gripping mechanism 4 in the Z-axis direction is adjusted by the moving mechanism 7. Next, the Z-axis and X-axis moving components of the junction box positive plug gripping mechanism 4 adjust the position of the junction box gripper assembly so that the junction box gripper assembly is directly above the positive plug 31 of junction box 3. Then, based on the angular deviation of the positive plug 31 of junction box 3, the rotation adjustment component rotates the junction box gripper assembly so that the gripper 452 of the junction box gripper assembly is directly opposite the positive plug 31 of junction box 3. Finally, the Y-axis moving component drives the junction box gripper assembly downwards to grip the positive plug 31 of junction box 3.

[0052] After the positive plug 31 of the junction box 3 is successfully picked up, the positive plug 31 of the junction box 3 is moved to the insertion position through the cooperation of the above-mentioned moving components and rotating adjustment components, waiting for the positive plug component 63 of the test fixture to be inserted.

[0053] After the positive plug 31 of junction box 3 and the positive plug 81 of the test fixture are connected, the negative plug 32 of junction box 3 and the negative plug 82 of the test fixture can be connected in the same way as described above.

[0054] Among them, such as Figure 8 As shown, the Z-axis moving assembly includes a Z-axis motor 411, a Z-axis motor mounting plate 412, a gear 413, and a rack 414. The Z-axis motor mounting plate 412 is slidably connected to the moving plate 77 of the moving mechanism 7 via a slider and a slide rail. The Z-axis motor 411 is mounted on one end of the Z-axis motor mounting plate 412. The gear 413 is mounted on the motor shaft of the Z-axis motor 411, and the rack 414 is mounted on the moving plate 77 of the moving mechanism 7. The gear 413 meshes with the rack 414. The X-axis moving assembly is mounted on the bottom surface of the Z-axis motor mounting plate 412. After the Z-axis motor 411 is started, the gear 413 and the rack 414 work together to drive the Z-axis motor mounting plate 412 to slide along the bottom surface of the moving plate 77 in the Z-axis direction. Then, the Z-axis motor mounting plate 412 drives the X-axis moving assembly to move along the Z-axis direction.

[0055] like Figure 8 As shown, the X-axis moving assembly includes a linear module 422 and a rotary motor mounting plate 421. The linear module 422 is a semi-enclosed precision screw series linear module of model TPA-HNR-120E. The linear module 422 is fixed to the bottom surface of the Z-axis motor mounting plate 412. The rotary motor mounting plate 421 is connected to the linear module 422, and the linear module 422 drives the rotary motor mounting plate 421 to move in the X-axis direction.

[0056] like Figure 8As shown, the rotary adjustment assembly includes a rotary motor 431 and a cylinder connecting plate 432. The rotary motor 431 is mounted on the bottom surface of the rotary motor mounting plate 421, the cylinder connecting plate 432 is connected to the rotary motor 431, and the Y-axis moving assembly is connected to the cylinder connecting plate 432. The rotary motor 431 drives the Y-axis moving assembly to rotate.

[0057] like Figure 8 As shown, the Y-axis moving assembly includes a Y-axis cylinder 441, which is connected to the cylinder connecting plate 432 of the rotation adjustment assembly. The extension and retraction of the Y-axis cylinder 441 drives the junction box gripper assembly to move up and down in the Y-axis direction.

[0058] like Figure 8 As shown, the junction box gripper assembly includes a double-headed cylinder 451 and grippers 452. The double-headed cylinder 451 is connected to the piston rod of the Y-axis cylinder 441. The two grippers 452 are respectively fixed on the two piston rods of the double-headed cylinder 451. The extension and retraction of the double-headed cylinder 451 drives the grippers 452 to perform gripping and releasing actions, gripping and releasing the positive plug 31 and the negative plug 32 of the junction box 3.

[0059] like Figure 8 As shown, the coaxial vision inspection device includes a bracket 461, an industrial camera 462, and a light source 463. The bracket 461 is mounted on a rotary motor mounting plate 421. The industrial camera 462 and the light source 463 are respectively mounted on the bracket 461, with the industrial camera 462 located directly above the through-hole of the light source 463. After the light source 463 is lit, the industrial camera 462 takes a picture of the junction box 3 on the photovoltaic module 2 through the through-hole of the light source 463.

[0060] The working principle of this utility model is as follows:

[0061] 1. After the photovoltaic module 2 is transported into the EL testing equipment through the conveyor line 1, the photovoltaic module 2 is shaped by the straightening mechanism, and then the photovoltaic module 2 is transported to the position of the blocking wheel 107 and stopped.

[0062] 2. Use a coaxial visual positioning device to photograph and locate the positive and negative plugs of the two junction boxes 3 that need to be connected to the photovoltaic module 2.

[0063] 3. Based on the coordinate information and angle deviation of the positive and negative plug positions of junction box 3, the positive plug gripping mechanism 4 grips the positive plug 31 of the junction box on photovoltaic module 2 and places it in the insertion position. The positive plug insertion component 63 of the test fixture then inserts the positive plug 81 of the test fixture into the positive plug 31 of the junction box. Then, the negative plug gripping mechanism 5 grips the negative plug 32 of the junction box on photovoltaic module 2 and places it in the insertion position. The negative plug insertion component 64 of the test fixture then inserts the negative plug 82 of the test fixture into the negative plug 32 of the junction box. It is worth noting that both the negative plug gripping mechanism 5 and the positive plug gripping mechanism 4 are equipped with coaxial vision positioning devices. If needed, the gripping image can be viewed in real time. By setting the gripping position threshold, a highly reliable and accurate gripping effect can be achieved.

[0064] 4. After the connection is completed, you can perform a power-on test.

[0065] 5. After power-on, the EL detection camera 9 below the EL testing equipment takes the first picture. After the picture is taken, the conveyor line 1 moves the photovoltaic module 2 to the next working position. At the same time, the moving mechanism 7 above the conveyor line 1 drives the entire set of test fixture plugging mechanism 6, junction box positive plug gripping mechanism 4 and junction box negative plug gripping mechanism 5 to move together with the photovoltaic module 2. This process is repeated to take pictures at three positions in total.

[0066] 6. After the power-on test is completed, each mechanism returns to its initial position and waits for the next power-on connection.

[0067] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An EL testing device for automatically connecting photovoltaic module junction box leads, characterized in that it... include: Conveyor line (1) for transporting photovoltaic modules (2); The junction box positive plug gripping mechanism (4) is used to grip the positive plug (31) of the junction box on the photovoltaic module (2) to the plugging position; The junction box negative plug gripping mechanism (5) is used to grip the negative plug (32) of the junction box on the photovoltaic module (2) to the plugging position; The test fixture plugging mechanism (6) is used to plug the positive plug (81) of the test fixture into the positive plug (31) of the junction box, and to plug the negative plug (82) of the test fixture into the negative plug (32) of the junction box. The moving mechanism (7) is used to move the test fixture plugging mechanism (6), the junction box positive plug gripping mechanism (4) and the junction box negative plug gripping mechanism (5) as a whole.

2. The EL testing equipment for automatically connecting photovoltaic module junction box leads according to claim 1, characterized in that: The conveyor line (1) includes a conveyor motor (11), a first transmission belt (12), a first driving pulley (13), a first driven pulley (14), a transmission shaft (15), and multiple belt conveyor assemblies (16). The first driving pulley (13) is fixed on the motor shaft of the conveyor motor (11), and the first driven pulley (14) is fixed on the transmission shaft (15). The first driving pulley (13) is connected to the first driven pulley (14) through the first transmission belt (12). The transmission shaft (15) provides power to the multiple belt conveyor assemblies (16), and photovoltaic modules (2) are placed on the belt conveyor assemblies (16).

3. The EL testing equipment for automatically connecting photovoltaic module junction box leads according to claim 1, characterized in that: The moving mechanism (7) includes a top bracket (71), a moving motor (72), a second transmission belt (73), a second driving pulley, a second driven pulley (75), a hanging plate (76), and a moving plate (77). The moving motor (72) is fixed at one end of the top bracket (71), the second driving pulley is fixed on the motor shaft of the moving motor (72), the second driven pulley (75) is fixed at the other end of the top bracket (71), the second driving pulley is connected to the second driven pulley (75) through the second transmission belt (73), the hanging plate (76) is fixed on the second transmission belt (73), and the moving plate (77) is connected to the bottom of the hanging plate (76).

4. The EL testing equipment for automatically connecting photovoltaic module junction box leads according to claim 3, characterized in that: The test fixture insertion mechanism (6) includes a vertical plate (61), a table (62), a test fixture positive electrode insertion assembly (63), and a test fixture negative electrode insertion assembly (64). The vertical plate (61) is connected to the bottom of the movable plate (77), and the table (62) is connected to the bottom of the vertical plate (61). The test fixture positive electrode insertion assembly (63) and the test fixture negative electrode insertion assembly (64) are respectively fixed at both ends of the bottom surface of the table (62).

5. The EL testing equipment for automatically connecting photovoltaic module junction box leads according to claim 4, characterized in that: The positive terminal plug-in assembly (63) and the negative terminal plug-in assembly (64) of the test fixture have the same structure.

6. The EL testing equipment for automatically connecting photovoltaic module junction box leads according to claim 5, characterized in that: The positive plug assembly (63) of the test fixture includes a test fixture motor screw and slider mechanism (631), a mounting plate (632), and a clamp (633). The test fixture motor screw and slider mechanism (631) is fixed on the bottom surface of the table (62). The test fixture motor screw and slider mechanism (631) drives the mounting plate (632) to move in the Z-axis direction. The clamp (633) is fixed on the bottom surface of the mounting plate (632) and is used to clamp the positive plug (81) of the test fixture.

7. The EL testing equipment for automatically connecting photovoltaic module junction box leads according to claim 1, characterized in that: The junction box positive plug gripping mechanism (4) and the junction box negative plug gripping mechanism (5) have the same structure.

8. The EL testing equipment for automatically connecting photovoltaic module junction box leads according to claim 7, characterized in that: The junction box positive plug gripping mechanism (4) includes a Z-axis moving component, an X-axis moving component, a rotation adjustment component, a Y-axis moving component, a junction box gripper assembly, and a coaxial vision inspection device. The Z-axis moving component is used to drive the X-axis moving component to move in the Z-axis direction. The X-axis moving component is used to drive the rotation adjustment component, the Y-axis moving component, and the coaxial vision inspection device to move in the X-axis direction. The Y-axis moving component is connected to the rotation adjustment component and is used to drive the Y-axis moving component to rotate. The junction box gripper assembly is connected to the Y-axis moving component and is used to drive the junction box gripper assembly to move in the Y-axis direction.

9. The EL testing equipment for automatically connecting photovoltaic module junction box leads according to claim 8, characterized in that: The junction box gripper assembly includes a double-headed cylinder (451) and grippers (452). The double-headed cylinder (451) is connected to the Y-axis moving assembly, and the two grippers (452) are respectively fixed on the two piston rods of the double-headed cylinder (451).

10. The EL testing equipment for automatically connecting photovoltaic module junction box leads according to claim 1, characterized in that: It also includes an EL inspection camera (9), which is located below the conveyor line (1).

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