A photovoltaic module junction box welding quality detection device

Abstract

The utility model discloses a photovoltaic module junction box welding quality detection equipment, include: frame, be provided with the transport line for transporting photovoltaic module on the frame, X -ray detection module is installed on the frame, include: light source subassembly and X -ray detector, the light source subassembly is located the X -ray detector upside, positioning assembly is set up in the side surface positioning module group of the transport line side and set up in the multiple position positioning module group of transport line. The utility model has the advantages that realize the automatic detection of photovoltaic module mounting panel, accurately detect the poor such as false soldering, empty soldering, missed soldering, and the welding area is few, guarantee the factory quality of photovoltaic module.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic technology, specifically to a photovoltaic module junction box welding quality inspection device. Background Technology

[0002] In photovoltaic modules, the junction box accounts for a small portion of the cost, but it is a crucial component determining whether the module can function properly. If the junction box malfunctions, and there are issues like incomplete soldering or a small weld area when welding the junction box to the busbar, excessive current and heat can be generated between the junction box electrode and the busbar. This can lead to the module burning out, affecting the system's power generation performance, or even causing a power plant fire and resulting in huge losses. Current technologies generally use visual inspection, which can only detect external welding defects. For internal welding defects, they can only rely on algorithms for equivalent detection calculations, which cannot accurately and truly detect internal welding defects, resulting in defective products leaving the factory with hidden risks. Summary of the Invention

[0003] To solve the above-mentioned technical problems, this utility model provides a photovoltaic module junction box welding quality inspection device, which realizes automatic detection of welding conditions, accurately positions and detects defects such as incomplete welding, empty welding, missing welding, and insufficient welding area.

[0004] Specifically, this utility model discloses a photovoltaic module junction box welding quality inspection device, comprising:

[0005] A frame, on which a transport line for transporting photovoltaic modules is provided;

[0006] An X-ray inspection module, mounted on a rack, includes a light source assembly and an X-ray detector, wherein the light source assembly is located above the X-ray detector;

[0007] The positioning components include a side positioning module disposed on the side of the transport line and multiple position positioning modules disposed in the transport line.

[0008] The advantage of adopting the above technical solution is that it enables automatic detection of photovoltaic module mounting plates, accurately detects defects such as poor soldering, empty soldering, missing soldering, and insufficient welding area, and ensures the factory quality of photovoltaic modules.

[0009] Furthermore, the side positioning module includes a mounting plate, a drive cylinder, and a positioning block symmetrically arranged on both sides of the transport line. The positioning block is connected to the extended end of the drive cylinder. The mounting plate is mounted on the frame, and the drive cylinder is positioned facing the transport line.

[0010] The advantage of adopting the above technical solution is that the side positioning module is used to position the two sides of the photovoltaic module, so that the junction box on the photovoltaic module is located at the detection position of the X-ray detection module, thereby achieving precise positioning and ensuring accurate detection results.

[0011] Furthermore, the positioning block is a cylindrical component with a rotating shaft installed in the middle. A fixing plate is installed at the bottom of the rotating shaft, and the fixing plate is connected to the driving cylinder.

[0012] The advantages of adopting the above technical solution are that the positioning block of the cylindrical part is rolled to the side of the photovoltaic module to avoid collision or damage. At the same time, a drive cylinder is set to change the position of the positioning block to play a positioning role, ensuring accurate positioning and precise detection results.

[0013] Furthermore, the positioning module includes a lifting cylinder and a lifting block. The lifting cylinder is vertically arranged, and the lifting block is located at the output end of the lifting cylinder. The lifting block rises to position the photovoltaic module.

[0014] The advantage of adopting the above technical solution is that, since an assembled photovoltaic module will have multiple junction boxes installed, and each junction box needs to be tested, the setting of the position positioning module can better realize the positioning of the photovoltaic module and ensure the accuracy of the test results.

[0015] Furthermore, a limiting plate is provided on the side of the mounting plate.

[0016] The advantage of adopting the above technical solution is that the limiting plate is used to restrict the position of the positioning block, ensuring that the positioning block will not squeeze the photovoltaic module frame and guarantee its use.

[0017] Furthermore, the light source assembly includes an X-ray source and a light source controller.

[0018] The advantage of adopting the above technical solution is that the X-ray source emits X-rays that penetrate the junction box, the light source controller is used to control the emission time, emission intensity, etc., the detection is carried out using junction boxes of different sizes, then the X-ray detector images the image, and finally the control system compares the results.

[0019] Furthermore, the transport line includes multiple sets of belt conveyors, which are connected by a drive shaft to enable the multiple belts to rotate synchronously.

[0020] The advantages of adopting the above technical solution are that the setting of multiple belt conveyors ensures smooth transportation and will not damage the assembled photovoltaic modules. At the same time, it can adapt to the testing of photovoltaic modules of different sizes.

[0021] Furthermore, the frame is surrounded by a sealing plate and equipped with a control panel.

[0022] The advantages of adopting the above technical solution are that the sealing plate can effectively avoid damage to the human body caused by X-rays, and the control screen can control the detection speed and time, record the number of detections, and distinguish between good and bad products.

[0023] Furthermore, support components are provided at both ends of the transport line, including support plates, support rollers and support shafts. The support shafts are horizontally arranged, the support rollers are rotatably mounted on the support shafts, and the support shafts are mounted on the frame via the support plates.

[0024] The advantage of adopting the above technical solution is that the setting of the support components plays an auxiliary support role. Since the entire photovoltaic module is large in size, the setting of the support rollers can play a good support role, ensuring that the photovoltaic module flows smoothly when it flows in and out, thus ensuring the product function.

[0025] Furthermore, an alarm light is installed on the rack.

[0026] The advantage of adopting the above technical solution is that the alarm light can sound an alarm when an abnormality occurs, so that the abnormality can be dealt with in a timely manner. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0028] Figure 1 This is a schematic diagram of the structure of the photovoltaic module junction box welding quality inspection equipment of this utility model.

[0029] Figure 2 This is a schematic diagram of the sealing plate installation structure of the photovoltaic module junction box welding quality inspection equipment of this utility model.

[0030] Figure 3 This is a cross-sectional view of the device of this utility model.

[0031] Figure 4 This is a schematic diagram of the side positioning module structure of this utility model.

[0032] Figure 5 This is a schematic diagram of the positioning module structure of this utility model.

[0033] Figure 6 This is a schematic diagram of the X-ray detection module structure of this utility model.

[0034] Figure 7 This is a schematic diagram of the transportation line structure of this utility model.

[0035] The reference numerals used in the attached figures are as follows:

[0036] Frame 1; Sealing plate 11; Conveyor line 2; Support plate 21; Support roller 22; Support shaft 23; Drive shaft 24; Light source assembly 3; X-ray source 31; X-ray detector 4; Side positioning module 5; Mounting plate 51; Drive cylinder 52; Positioning block 53; Rotating shaft 54; Limit plate 55; Fixing plate 56; Position positioning module 6; Lifting cylinder 61; Lifting block 62; Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings.

[0038] like Figure 1-3 As shown, this utility model discloses a photovoltaic module junction box welding quality inspection device, comprising:

[0039] A frame 1, on which a transport line 2 for transporting photovoltaic modules is provided;

[0040] The X-ray detection module is mounted on the frame 1 and includes: a light source assembly 3 and an X-ray detector 4, wherein the light source assembly 3 is located on the upper side of the X-ray detector 4;

[0041] The positioning components include a side positioning module 5 disposed on the side of the transport line 2 and multiple position positioning modules 6 disposed in the transport line 2.

[0042] The advantage of adopting the above technical solution is that it enables automatic detection of photovoltaic module mounting plate 51, accurately detects defects such as poor soldering, empty soldering, missing soldering, and insufficient welding area, and ensures the factory quality of photovoltaic modules.

[0043] In some implementations, the side positioning module 5 includes mounting plates 51, drive cylinders 52, and positioning blocks 53 (e.g., symmetrically arranged on both sides of the transport line 2) Figure 4 As shown, the positioning block 53 is connected to the extended end of the drive cylinder 52, the mounting plate 51 is mounted on the frame 1, the drive cylinder 52 is set towards the transport line 2, and the side positioning modules 5 are used to position the two sides of the photovoltaic module. There are three sets, and the adjacent side positioning modules 5 have a certain distance. Under the drive of the drive cylinder 52, the positioning block 53 moves towards the photovoltaic module and contacts the frame of the photovoltaic module, pushing the photovoltaic module to be straightened, so that the junction box on the photovoltaic module is located at the detection position of the X-ray detection module, so as to achieve precise positioning and ensure accurate detection results.

[0044] In some implementations, the positioning block 53 is a cylindrical component with a rotating shaft 54 ​​mounted in the middle. A fixing plate 56 is mounted on the bottom of the rotating shaft 54. The rotating shaft 54 ​​is attached to the fixing plate 56 by screws. There are two fixing plates 56, and each fixing plate 56 has a slot. A connecting plate is mounted on the extended end of the drive cylinder 52. The fixing plate 56 and the connecting plate are attached by screws. The slot can control the position of the fixing plate 56. When testing different types of photovoltaic modules, the position of the fixing plate 56 can be changed to suit different models. The fixing plate 56 is connected to the drive cylinder 52. The cylindrical component is made of rubber, which has a certain elasticity and is wear-resistant, and will not cause scratches or collisions to the product. It also makes rolling contact with the photovoltaic module from the side, reducing the contact area and allowing for smooth movement when pushing the photovoltaic module.

[0045] Furthermore, a limiting plate 55 is provided on the side of the mounting plate 51. The bottom of the limiting plate 55 is locked onto the mounting plate 51. The limiting plate 55 is used to limit the extension position of the drive cylinder 52, ensuring that the positioning block 53 will not squeeze the photovoltaic module frame and ensuring its use.

[0046] In some implementations, the positioning module 6 includes a lifting cylinder 61 and a lifting block 62 (e.g., Figure 5 As shown, the lifting cylinder 61 is vertically installed and fixed to the side of the conveyor belt profile with bolts, arranged symmetrically. The lifting block 62 is located at the output end of the lifting cylinder 61 and fixed with bolts. The lifting block 62 rises to position the photovoltaic module. The number of positioning modules 6 is set according to the number of junction boxes. During transportation on the transport line 2, when the first junction box enters the upper side of the light source module 3, the positioning module 6 pushes out to stop the photovoltaic module and perform the first junction box inspection. After inspection, the positioning module 6 retracts, and the photovoltaic module continues to move. When the second junction box is in the inspection position, the same action is performed, and the positioning module 6 pushes out until all junction boxes have been inspected. This ensures accurate junction box positioning and convenient inspection.

[0047] Furthermore, the light source assembly 3 includes an X-ray source 31 and a light source controller (such as...). Figure 6 (As shown). X-ray source 31 emits X-rays that penetrate the junction box. The light source controller controls the emission time, emission intensity, etc. Different sized junction boxes are used for detection. Then, the X-ray detector 4 images the light. Finally, the control system compares the results and determines whether the product is good. Good products proceed to the next workstation, while defective products are reworked.

[0048] In some implementations, transport line 2 includes multiple sets of belt conveyors (such as...) Figure 7As shown), the belt conveyor is connected by a drive shaft 24 to make multiple belts rotate synchronously. The belt conveyor also includes a support profile for support. Synchronous pulleys are installed at both ends. The belt is a synchronous belt. The synchronous pulleys drive the belt to rotate. There are 4 belts. The drive shaft 24 passes through the four synchronous pulleys and drives them to rotate synchronously. At the same time, multiple position sensors are set to sense the position of the photovoltaic module to ensure that its stopping position is accurate and the transportation is smooth.

[0049] Furthermore, support components are provided at both ends of the transport line 2, including support plate 21, support roller 22 and support shaft 23. The support shaft 23 is set horizontally, and the support roller 22 is rolled on the support shaft 23. The support plate 21 is fixed to the frame 1 profile by bolts. The support shaft 23 is installed on the frame 1 through the support plate 21. The support roller 22 is made of rubber or plastic and has bearings installed inside. The support shaft 23 is locked to the side of the support plate 21.

[0050] Furthermore, the outer perimeter of the frame 1 is provided with a sealing plate 11 and a control panel is installed thereon. The sealing plate 11 has an inlet and an outlet to prevent photovoltaic modules from entering or exiting. The sealing plate 11 can effectively prevent X-rays from causing damage to the human body. The control panel can control the detection speed and time, record the number of detections, and distinguish between good and bad products.

[0051] Furthermore, an alarm light is installed on rack 1. The alarm light is set to sound an alarm when an abnormality occurs, so that the abnormality can be dealt with in a timely manner.

[0052] Furthermore, the entire device also has multiple safety protection structures, including overcurrent protection, overvoltage protection, and fault warning functions.

[0053] The workflow is as follows: First, the entire equipment connects to the upstream processing equipment. The photovoltaic modules transported from the upstream processing equipment flow into transport line 2. Then, the side positioning module 5 extends to straighten the entire photovoltaic module. The photovoltaic module continues to be transported, and the corresponding position positioning module 6 extends. The junction box is located below the X-ray source 31. The X-ray detector 4 located below sequentially detects and images multiple junction boxes on the photovoltaic module. The system compares the images to determine whether there are defects such as poor welding, empty welding, missing welding, or insufficient welding area in the welding inside the junction box. This achieves non-destructive testing of the junction box, with high testing efficiency, ensuring the factory quality of the photovoltaic module.

[0054] For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A photovoltaic module junction box welding quality inspection device, characterized in that, include: A frame (1) is provided with a transport line (2) for transporting photovoltaic modules. The X-ray detection module is mounted on the frame (1) and includes: a light source assembly (3) and an X-ray detector (4), wherein the light source assembly (3) is located on the upper side of the X-ray detector (4); The positioning components include a side positioning module (5) disposed on the side of the transport line (2) and multiple position positioning modules (6) disposed in the transport line (2). The side positioning module (5) includes a mounting plate (51), a drive cylinder (52) and a positioning block (53) symmetrically arranged on both sides of the transport line (2). The positioning block (53) is connected to the extended end of the drive cylinder (52). The mounting plate (51) is mounted on the frame (1). The drive cylinder (52) is positioned facing the transport line (2). The positioning block (53) is a cylindrical part with a rotating shaft (54) installed in the middle. A fixing plate (56) is installed at the bottom of the rotating shaft (54). The fixing plate (56) is connected to the driving cylinder (52). There are two fixing plates, and the fixing plates are provided with strip grooves. A limiting plate (55) is provided on the side of the mounting plate (51); The transport line (2) is provided with support components at both ends, including support plate (21), support roller (22) and support shaft (23). The support shaft (23) is horizontally arranged, the support roller (22) is rolled on the support shaft (23), and the support shaft (23) is mounted on the frame (1) through the support plate (21).

2. The photovoltaic module junction box welding quality inspection equipment according to claim 1, characterized in that, The positioning module (6) includes a lifting cylinder (61) and a lifting block (62). The lifting cylinder (61) is vertically arranged, and the lifting block (62) is located at the output end of the lifting cylinder (61). The lifting block (62) rises to position the photovoltaic module.

3. The photovoltaic module junction box welding quality inspection equipment according to claim 1, characterized in that, The light source assembly (3) includes an X-ray source (31) and a light source controller.

4. The photovoltaic module junction box welding quality inspection equipment according to claim 1, characterized in that, The transport line (2) includes multiple sets of belt lines, which are connected by a drive shaft (24) to make the multiple belts rotate synchronously.

5. The photovoltaic module junction box welding quality inspection equipment according to claim 1, characterized in that, The frame (1) is surrounded by a sealing plate (11) and a control panel is installed.

6. The photovoltaic module junction box welding quality inspection equipment according to claim 1, characterized in that, An alarm light is installed on the frame (1).

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