A carrier and photovoltaic module production testing system

Abstract

The application provides a carrier and a photovoltaic module production test device, and relates to the technical field of photovoltaic module processing. The carrier comprises a frame, a wiring terminal, a connector and a wire. The bottom of the frame is provided with a groove for accommodating a photovoltaic module. The side wall of the frame away from the groove is provided with the wiring terminal for electrical connection with a test instrument. The bottom of the frame near the groove is provided with the connector which is electrically connected with the wiring terminal through the wire and is used for electrical connection with a junction box of the photovoltaic module. The carrier provided by the application can form a protective supporting effect on the photovoltaic module, avoiding damage to the module caused by manual carrying. Meanwhile, the current conduction structure of the wiring terminal, the wire and the connector is used to electrically connect the photovoltaic module with the test instrument, so that the electrical performance test of the photovoltaic module is more convenient, and the electrical performance test efficiency of the photovoltaic module is improved.

Description

Technical Field

[0001] This application relates to the field of photovoltaic module processing technology, and in particular to a carrier and a photovoltaic module production testing device. Background Technology

[0002] The main components of a photovoltaic power generation system are lightweight flexible modules, which involve production and electrical performance testing processes.

[0003] In existing technologies, photovoltaic modules are typically moved from the laminate to the subsequent production line by manual operation, and then connected to the photovoltaic module junction box by a test fixture to complete the electrical performance testing of the photovoltaic modules.

[0004] The existing technology has at least the following problems: due to the flexibility of the components and the lack of rigid support, the cells are easily damaged during manual handling; and the operation is relatively complicated in the electrical performance testing stage, making it impossible to achieve automatic power-on and resulting in low testing efficiency. Summary of the Invention

[0005] This application aims to provide a carrier and photovoltaic module production testing system, which at least solves the problems of easy damage to solar cells during manual handling and low testing efficiency due to the inability to automatically power on during the electrical performance testing stage.

[0006] To solve the above-mentioned technical problems, this application is implemented as follows:

[0007] This application provides a carrier for the production testing of photovoltaic modules, characterized in that it includes a frame, a positive terminal, a positive connector, a positive wire, a negative terminal, a negative connector, and a negative wire; the bottom of the frame is provided with a groove for accommodating the photovoltaic module; the positive terminal and the negative terminal are provided on the side wall of the frame away from the groove for electrical connection with testing instruments; the positive connector and the negative connector are provided on the bottom of the frame near the groove, the positive connector is electrically connected to the positive terminal via the positive wire, and the negative connector is electrically connected to the negative terminal via the negative wire; the positive connector is used for electrical connection to the positive terminal box of the photovoltaic module, and the negative connector is used for electrical connection to the negative terminal box of the photovoltaic module.

[0008] Optionally, a first through hole is provided on the side wall of the frame near the positive terminal for passing through the positive wire, and / or a second through hole is provided on the side wall of the frame near the negative terminal for passing through the negative wire.

[0009] Optionally, the positive terminal and / or the negative terminal includes an insulating housing and a metal component; the insulating housing is cuboid and includes a hollow cavity, and the metal component is placed inside the hollow cavity; a first surface of the insulating housing is provided with a through hole for passing through the positive or negative wire, a second surface of the insulating housing is provided with an opening that exposes the metal component, and a third surface of the insulating housing is connected to the side wall of the frame; the metal component inside the opening is used for electrical connection with the testing instrument.

[0010] Optionally, the surface of the groove is covered with copper foil, which is used to contact the photovoltaic module.

[0011] Optionally, a top plate is connected to the side wall of the frame away from the bottom of the frame, and the projection of the top plate on the bottom of the frame coincides with the bottom portion of the frame.

[0012] Optionally, the groove has a rectangular cross-section parallel to the bottom of the frame, the side length of the cross-section is greater than the corresponding side length of the photovoltaic module, and the depth of the groove is greater than the thickness of the photovoltaic module.

[0013] Optionally, the frame is made of aluminum alloy.

[0014] This application also provides a photovoltaic module production and testing system, including a robotic arm, a loading platform, a junction box assembly line, a curing line, an electrical testing line, an automatic labeling device, a grading platform, and a carrier as described in any of the preceding items; the robotic arm is used to grab the carrier onto the loading platform, the junction box assembly line, the curing line, the electrical testing line, the automatic labeling device, or the grading platform.

[0015] Optionally, the electrical testing line includes an IV testing device, an insulation withstand voltage testing device, and an EL testing device arranged in sequence.

[0016] Optionally, the junction box assembly line includes a junction box bonding platform, an automatic junction box lead welding device, and an automatic junction box sealant injection device arranged in sequence.

[0017] The carrier provided in this application provides a protective support for the photovoltaic modules, preventing damage to the cells during manual handling when transferring the photovoltaic modules. At the same time, the current conduction structure of the terminals, wires, and connectors allows for electrical performance testing of the photovoltaic modules. Compared with the existing method of manually connecting and testing the power, this method is more convenient and improves the efficiency of photovoltaic module electrical performance testing.

[0018] The photovoltaic module production and testing system provided in this application uses a robotic arm to grab the carrier onto the loading platform, junction box assembly line, curing line, electrical testing line, automatic labeling device, or sorting platform, which improves the efficiency of automatic transfer of photovoltaic modules after the lamination process, while reducing the intensity of manual labor and avoiding module damage caused by manual handling. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the vehicle structure provided in the embodiments of this application;

[0021] Figure 2 This is a schematic diagram of the assembly structure of the carrier and photovoltaic modules according to an embodiment of this application;

[0022] Figure 3 This is an embodiment of the present application. Figure 1 A plan view along direction A;

[0023] Figure 4 This is an embodiment of the present application. Figure 1 Cross-sectional view along direction B;

[0024] Figure 5 This is a schematic diagram of the positive terminal structure according to an embodiment of this application;

[0025] Figure 6 This is a schematic diagram of the first arrangement of the photovoltaic module junction box in the embodiments of this application;

[0026] Figure 7 This is a schematic diagram of the second arrangement of the photovoltaic module junction box in the embodiments of this application;

[0027] Figure 8 This is a schematic diagram of the second arrangement of the photovoltaic module junction box in the embodiments of this application;

[0028] Figure 9 This is a schematic diagram of the first structural form of the vehicle in the embodiments of this application;

[0029] Figure 10 This is a schematic diagram of a second structural embodiment of the vehicle in this application;

[0030] Figure 11 This is a schematic diagram of the third structure of the vehicle in the embodiments of this application;

[0031] Figure 12 This is a schematic diagram of the photovoltaic module production and testing system provided in the embodiments of this application.

[0032] Figure label:

[0033] 1-Carrier, 11-Frame, 111-Groove, 112-First Through Hole, 113-Second Through Hole, 114-Copper Foil, 115-Top Plate, 12-Positive Terminal, 13-Positive Connector, 14-Positive Wire, 15-Negative Terminal, 16-Negative Connector, 17-Negative Wire, 121-Insulating Housing, 1211-First Surface, 12111-Wire Hole, 1212-Second Surface, 12121-Opening, 1213-Third Surface, 12 2-Metal parts, 2-Photovoltaic modules, 21-Junction boxes, 211-Positive junction boxes, 212-Negative junction boxes, 3-Feeding platform, 4-Junction box assembly line, 41-Junction box bonding platform, 42-Automatic junction box lead wire welding device, 43-Automatic junction box sealant filling device, 5-Curing line, 6-Electrical testing line, 61-IV testing device, 62-Insulation withstand voltage testing device, 63-EL testing device, 7-Automatic labeling device, 8-Grading platform. Detailed Implementation

[0034] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0035] The carrier and photovoltaic module production testing device provided in this application will be described in detail below with reference to the accompanying drawings and through specific embodiments and application scenarios. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0036] This application provides a carrier 1 for the production testing of photovoltaic modules, referring to... Figure 1 up Figure 3The system includes a frame 11, a positive terminal 12, a positive connector 13, a positive wire 14, a negative terminal 15, a negative connector 16, and a negative wire 17. The bottom of the frame 11 has a groove 111 for accommodating the photovoltaic module 2. The positive terminal 12 and the negative terminal 15 are located on the side wall of the frame 11 away from the groove 111 for electrical connection to testing instruments. The positive connector 13 and the negative connector 16 are located near the groove 111 at the bottom of the frame 11. The positive connector 13 is electrically connected to the positive terminal 12 via the positive wire 14, and the negative connector 16 is electrically connected to the negative terminal 15 via the negative wire 17. The positive connector 13 is used for electrical connection to the positive junction box 211 of the photovoltaic module 2, and the negative connector 16 is used for electrical connection to the negative junction box 212 of the photovoltaic module 2.

[0037] Specifically, Figure 1 A schematic diagram of the structure of the vehicle 1 provided in an embodiment of this application is shown. Figure 2 This paper shows a schematic diagram of the assembly structure of the carrier 1 and the photovoltaic module 2 according to an embodiment of this application. Figure 3 An embodiment of this application is shown. Figure 1 A plan view along direction A. The carrier 1 includes a frame 11, a positive terminal block 12, a positive connector 13, a positive wire 14, a negative terminal block 15, a negative connector 16, and a negative wire 17. The frame 11 includes a bottom and side walls. A groove 111 is provided on the upper surface of its bottom. The shape of the groove 111 matches that of the photovoltaic module 2 to accommodate the photovoltaic module 2. Positive terminal blocks 12 and negative terminal blocks 15 are provided on the outer side of its side walls for electrical connection with photovoltaic module testing instruments. Positive connectors 13 and negative connectors 16 are provided on the bottom of the frame 11 near the groove 111 for electrical connection with the junction box 21 of the photovoltaic module 2. That is, through the structure of terminals, connectors, and wires, the photovoltaic module 2 is electrically connected to the testing instruments to complete electrical performance tests, including IV test, insulation withstand voltage test, and EL test.

[0038] Specifically, the junction box 21 of the photovoltaic module 2 includes a positive terminal junction box 211 and a negative terminal junction box 212, such as Figure 6 This diagram illustrates a first arrangement of the junction box 21 of the photovoltaic module 2 in an embodiment of this application. The positive junction box 211 and the negative junction box 212 are located at the midpoints of two opposite sides of the photovoltaic module 2, and the corresponding wiring terminals and connectors are arranged as follows. Figure 9 As shown; Figure 7This illustration shows a second arrangement of the junction box 21 of the photovoltaic module 2 in an embodiment of this application. The positive junction box 211 and the negative junction box 212 are located close to the same side of the photovoltaic module 2, and the corresponding wiring terminals and connectors are arranged as follows. Figure 10 As shown; Figure 8 This illustration shows a third arrangement of the junction box 21 of the photovoltaic module 2 in an embodiment of this application. The positive terminal junction box 211 and the negative terminal junction box 212 are arranged opposite each other and close to the ends of each side. The corresponding wiring terminals and connectors are arranged as follows. Figure 11 As shown. Therefore, the positions of the positive and negative terminals and connectors of the carrier 1 can be designed according to the position of the junction box 21 of the photovoltaic module 2. At the same time, the positive terminal 12 and the positive connector 13 can also be set on different sides of the frame 11, and the negative terminal 15 and the negative connector 16 are similarly set.

[0039] The carrier 1 provided in this embodiment has a groove 111 at the bottom of the frame 11 for accommodating the photovoltaic module 2. The frame provides protection and support for the photovoltaic module 2, preventing damage to the internal cells of the photovoltaic module 2 due to manual handling during the production and testing process. Simultaneously, the photovoltaic module 2 is electrically connected to the testing instrument via the current-conducting structure of the terminals, wires, and connectors, enabling electrical performance testing of the photovoltaic module 2. Compared to the existing method of manually connecting and testing, this method provides more convenient power-on and improves the efficiency of photovoltaic module electrical performance testing.

[0040] Optionally, refer to Figure 1 The side wall of the frame 11 near the positive terminal 12 is provided with a first through hole 112 for passing through the positive wire 14, and / or the side wall of the frame 11 near the negative terminal 15 is provided with a second through hole 113 for passing through the negative wire 17.

[0041] Specifically, such as Figure 1 As shown, taking the positive terminal as an example, a first through hole 112 is provided on the side wall of the frame 11 near the positive terminal 12. A positive wire 14 is passed through the first through hole 112 to connect the positive terminal 12 to the positive connector 13, forming a current path. It can also fix and partially conceal the positive wire 14, avoiding damage to the positive wire 14 during operation. The same applies to the negative terminal.

[0042] Optionally, refer to Figure 3 and Figure 5The positive terminal 12 and / or the negative terminal 15 include an insulating housing 121 and a metal component 122; the insulating housing 121 is cuboid and includes a hollow cavity, and the metal component 122 is placed inside the hollow cavity; the first surface 1211 of the insulating housing 121 is provided with a through hole 12111 for passing through the positive wire 14 or the negative wire 17, the second surface 1212 of the insulating housing 121 is provided with an opening 12121 that exposes the metal component 122, and the third surface 1213 of the insulating housing 121 is connected to the side wall of the frame 11; the metal component 122 in the opening 12121 is used for electrical connection with the testing instrument.

[0043] Specifically, Figure 5 A schematic diagram of the positive terminal 12 of this application is shown. The negative terminal 15 has a similar structure. Figure 3 As shown, the positive terminal 12 / or the negative terminal 15 includes an insulating housing 121 and a metal component 122. The insulating housing 121 is made of engineering plastic, and the metal component 122 is made of copper. The insulating housing 121 is nested outside the metal component 122. The insulating housing 121 is fixed to the side wall of the frame 11. Its first surface 1211 is provided with a wire hole 12111 for passing through the positive wire 14 or the negative wire 17 to connect it to the metal component 122. The second surface 1212 is provided with an opening 12121 that exposes the metal component 122, allowing the metal component 122 to be electrically connected to the probe of the testing instrument, thereby performing electrical performance testing on the photovoltaic module 2. The insulating housing 121 can provide leakage protection for the metal component 122 during the electrical performance testing process.

[0044] Optionally, refer to Figure 4 The surface of the groove 111 is covered with copper foil 114, which is used to contact the photovoltaic module 2.

[0045] Specifically, such as Figure 4 As shown, due to electrical performance testing requirements, the contact surface between the carrier 1 and the photovoltaic module 2 must be made of metal. The frame 11 can be made entirely of metal, in which case the surface of the groove 111 does not need to be covered with copper foil 114; if the frame 11 is composed of metal sidewalls and a non-metallic bottom, copper foil 114 needs to be laid on the surface of the groove 111 to accommodate the photovoltaic module 2, and the copper foil 114 extends on the bottom surface of the frame 11 and connects with the sidewalls of the frame 11.

[0046] Optionally, refer to Figure 4 A top plate 115 is connected to the side wall of the frame 11 away from the bottom of the frame 11, and the projection of the top plate 115 on the bottom of the frame 11 coincides with the bottom part of the frame 11.

[0047] Specifically, such as Figure 4 As shown, a top plate 115 is provided on the top of each of the two opposite side walls of the frame 11. The surface of the top plate 115 is perpendicular to the side wall of the frame 11. The bending structure formed by the top plate 115 and the side wall of the frame 11 can be used by the robotic arm gripper to grasp the carrier 1 and transfer the carrier 1 to the production and testing line. The dimensions of the side wall height h of the frame 11 and the projected length a of the top plate 115 on the bottom of the frame 11 are adapted and adjusted according to the size of the robotic arm gripper, and the values ​​are generally between 35mm and 50mm.

[0048] Optionally, refer to Figure 4 The groove 111 has a rectangular cross-section parallel to the bottom of the frame 11, the side length of the cross-section is greater than the corresponding side length of the photovoltaic module 2, and the depth of the groove 111 is greater than the thickness of the photovoltaic module 2.

[0049] Specifically, such as Figure 4 As shown, the cross-section of the groove 111 is rectangular, and its internal dimensions are adapted to the size of the photovoltaic module 2. The length and width of the groove 111 cross-section are 2mm to 5mm longer than the corresponding side of the photovoltaic module 2, and the depth of the groove 111 is 2mm to 10mm greater than the thickness of the photovoltaic module 2. The depth value can be adjusted according to the voltage applied during the electrical performance test. If leakage occurs, the bottom of the frame 11 can be broken down to ensure the safety of the photovoltaic module 2. This value can be determined experimentally.

[0050] Optionally, the frame 11 is made of aluminum alloy.

[0051] Specifically, such as Figure 4 As shown, the frame 11 is made of aluminum alloy and is machined. Its thickness can be adapted according to the weight of the carrier 1, generally 1mm to 2mm.

[0052] Optionally, refer to Figure 8 This application also provides a photovoltaic module production and testing system, including a robotic arm, a loading platform 3, a junction box assembly line 4, a curing line 5, an electrical testing line 6, an automatic labeling device 7, a grading platform 8, and a carrier 1 as described in any of the preceding embodiments; the robotic arm is used to grab the carrier 1 onto the loading platform 3, the junction box assembly line 4, the curing line 5, the electrical testing line 6, the automatic labeling device 7, or the grading platform 8.

[0053] Specifically, such as Figure 8As shown, the photovoltaic module production and testing system provided in this application uses a robotic arm to grab the carrier 1 onto the feeding platform 3, junction box assembly line 4, curing line 5, electrical testing line 6, automatic labeling device 7, or sorting platform 8. The photovoltaic modules 2 move along with the carrier 1, and after the production and testing work is completed, the carrier 1 is removed from each line. This improves the efficiency of the automatic transfer of photovoltaic modules 2 after the lamination process, while reducing the intensity of manual labor and avoiding module damage caused by manual handling.

[0054] Optionally, refer to Figure 8 The electrical testing line 6 includes an IV testing device 61, an insulation withstand voltage testing device 62, and an EL testing device 63 arranged in sequence.

[0055] Optionally, refer to Figure 8 The junction box assembly line 4 includes a junction box bonding platform 41, an automatic junction box lead wire welding device 42, and an automatic junction box sealant injection device 43 arranged in sequence.

[0056] In some implementations, such as Figure 8 As shown, the steps for conducting photovoltaic module production testing are as follows:

[0057] Step 1: At the loading platform 3, the robotic arm uses the suction cup assembly to grab the laminated photovoltaic module 2 onto the carrier 1, and electrically connects the junction box of the photovoltaic module 2 to the connector of the carrier 1, including electrically connecting the positive junction box 211 to the positive connector 13, and electrically connecting the negative junction box 212 to the negative connector 16.

[0058] Step 2: The robotic arm picks up carrier 1 and places it onto junction box assembly line 4, where it performs the following processes: bonding the junction box, automatically welding the junction box leads, and automatically applying junction box sealant.

[0059] Step 3: The robotic arm picks up carrier 1 and places it onto the curing production line 5. 5-30 carriers are stacked in each group and discharged after curing through the curing production line 5.

[0060] Step 4: The robotic arm picks up the carrier 1 and places it onto the IV testing device 61, and then enters the dark chamber. The testing instrument connects the positive terminal 12 and the negative terminal 15 of the carrier 1 through the pressure pin to test the power of the photovoltaic module 2.

[0061] Step 5: The robotic arm picks up the carrier 1 and places it onto the insulation withstand voltage test device 62. The positive terminal of the test instrument is electrically connected to the positive terminal 12 of the carrier 1 through the pressure pin, and the negative terminal of the test instrument is directly connected to the frame 11 to test the insulation withstand voltage performance of the photovoltaic module 2.

[0062] Step 6: The robotic arm picks up the carrier 1 and places it onto the EL testing device 63. The testing instrument connects the positive terminal 12 and the negative terminal 15 of the carrier 1 through the pressure pin to perform EL performance testing on the photovoltaic module 2.

[0063] Step 7: The robotic arm picks up the carrier 1 and places it onto the automatic labeling device 7 to affix labels to the photovoltaic modules 2.

[0064] Step 8: The robotic arm sorts the photovoltaic modules 2 at the sorting platform 8 and stacks them into the designated slots.

[0065] The photovoltaic module production and testing system provided in this application embodiment can automatically transfer photovoltaic modules 2 after lamination by using a robotic arm, since the carrier 1 can protect the photovoltaic modules 2. This reduces manual operation; it also automates the junction box assembly process, improving product yield; it enables automatic stacking on the curing line 5; it provides automatic power-on for module electrical performance testing, avoiding the problem that frameless photovoltaic modules 2 cannot be tested for insulation withstand voltage; and it automates automatic labeling and grading operations.

[0066] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0067] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

[0068] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A carrier for production testing of photovoltaic modules, characterized in that, Includes a frame, positive terminal block, positive connector, positive wire, negative terminal block, negative connector, and negative wire; The bottom of the frame is provided with a groove for accommodating the photovoltaic module; The positive terminal and the negative terminal are provided on the side wall of the frame away from the groove, for electrical connection with the testing instrument. The positive connector and the negative connector are provided at the bottom of the frame near the groove. The positive connector is electrically connected to the positive terminal through the positive wire, and the negative connector is electrically connected to the negative terminal through the negative wire. The positive connector is used to electrically connect to the positive terminal box of the photovoltaic module, and the negative connector is used to electrically connect to the negative terminal box of the photovoltaic module. The positive terminal and / or the negative terminal include an insulating housing and a metal component; the insulating housing is cuboid and includes a hollow cavity, and the metal component is placed inside the hollow cavity; a first surface of the insulating housing is provided with a through hole for passing through the positive or negative wire, a second surface of the insulating housing is provided with an opening that exposes the metal component, and a third surface of the insulating housing is connected to the side wall of the frame; the metal component inside the opening is used for electrical connection with the testing instrument; The surface of the groove is covered with copper foil, which is used to contact the photovoltaic module. A top plate is connected to the side wall of the frame away from the bottom of the frame, and the projection of the top plate on the bottom of the frame coincides with the bottom part of the frame; The groove has a rectangular cross-section parallel to the bottom of the frame, the side length of the cross-section is greater than the corresponding side length of the photovoltaic module, and the depth of the groove is greater than the thickness of the photovoltaic module.

2. The vehicle according to claim 1, characterized in that, The side wall of the frame is provided with a first through hole near the positive terminal for passing through the positive wire, and / or the side wall of the frame is provided with a second through hole near the negative terminal for passing through the negative wire.

3. The vehicle according to claim 1, characterized in that, The frame is made of aluminum alloy.

4. A photovoltaic module production testing system, characterized in that, It includes a robotic arm, a sequentially arranged loading platform, a junction box assembly line, a curing line, an electrical testing line, an automatic labeling device, a grading platform, and a carrier as described in any one of claims 1-3; The robotic arm is used to grab the carrier onto the loading platform, the junction box assembly line, the curing line, the electrical testing line, the automatic labeling device, or the sorting platform.

5. The photovoltaic module production testing system according to claim 4, characterized in that, The electrical testing line includes an IV testing device, an insulation withstand voltage testing device, and an EL testing device arranged in sequence.

6. The photovoltaic module production testing system according to claim 4, characterized in that, The junction box assembly line includes a junction box bonding platform, an automatic junction box lead welding device, and an automatic junction box sealant injection device arranged in sequence.

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