Junction box quality detection system

Abstract

The utility model relates to the technical field of photovoltaic module detection, in particular to a junction box quality detection system, which comprises a cross rod, a first guide rail, a second guide rail, a first detection device and a second detection device, and is characterized in that the cross rod is horizontally arranged and is provided with a second guide rail along the length direction; the X-ray detector is connected to the first guide rail in a sliding manner; the two longitudinal rods are arranged in the horizontal direction, second guide rails are arranged in the length direction of the longitudinal rods, and the two ends of the transverse rod are connected to the second guide rails of the two longitudinal rods in a sliding mode through first sliding structures respectively; the junction box quality detection system is suitable for combining sliding of the cross rod and sliding of the X-ray detector, moving the X-ray detector to the position above the junction box and scanning and detecting welding spots on the junction box. According to the technical scheme, through the movable X-ray detector, the efficiency of detecting the interior of the welding spot of the junction box can be more efficiently improved, meanwhile, the accuracy of a detection result can be guaranteed, and it is guaranteed that the quality of the output junction box is more reliable; and the productivity of the photovoltaic module is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic component detection, in particular to a junction box quality detection system. Background Art

[0002] After the junction box of the photovoltaic module is welded, the appearance of the solder joint is mainly checked by the visual system based on the AI ​​algorithm. The visual system based on the AI ​​algorithm can only determine whether the appearance of the solder joint is qualified, but it cannot detect the welding contact area inside the solder joint and cannot truly reflect the welding quality of the junction box. A relatively small welding contact area seriously affects the output power of the photovoltaic module and may even cause a hot spot effect.

[0003] Therefore, when the quality of the solder joints is unqualified, the junction box needs to be re-welded. With the continuous increase in the output of photovoltaic modules, the production capacity of photovoltaic modules is seriously affected. Utility Model Content

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the defect that the internal quality of the solder joints of the photovoltaic module junction box is difficult to detect, resulting in abnormal testing of the photovoltaic module and seriously affecting the production capacity of the photovoltaic module.

[0005] In order to solve the above technical problems, the utility model provides a junction box quality detection system, comprising:

[0006] A crossbar is arranged in a horizontal direction, and a first guide rail is arranged along the length direction of the crossbar;

[0007] An X-ray detector, slidably connected to the first guide rail;

[0008] Two longitudinal bars are arranged in the horizontal direction, and second guide rails are arranged along the length direction of the longitudinal bars. Both ends of the cross bar are slidably connected to the second guide rails of the two longitudinal bars through the first sliding structure respectively.

[0009] The junction box quality inspection system is suitable for combining the sliding of the cross bar and the sliding of the X-ray detector, moving the X-ray detector above the junction box, and scanning and inspecting the welding points on the junction box.

[0010] Optionally, it also includes:

[0011] The controller is connected to the X-ray detector signal, and the controller is suitable for obtaining the void ratio according to the scanning condition of the X-ray detector. When the void ratio is less than a set value, it is determined that the quality of the solder joint is qualified.

[0012] Optionally, the first sliding structure includes:

[0013] A first slider is slidably connected to the second guide rail, and an end of the crossbar is fixedly mounted on the first slider;

[0014] A first lead screw, threadedly connected to the first slider;

[0015] The first power member is connected to the first lead screw, and the first power member is connected to the controller signal; the first power member is suitable for driving the first lead screw to rotate, and then driving the first sliding block to slide along the second guide rail.

[0016] Optionally, it also includes:

[0017] a third guide rail disposed between the X-ray detector and the first guide rail, the third guide rail being disposed in a vertical direction and being slidably connected to the first guide rail via a second sliding structure;

[0018] The X-ray detector is slidably connected to the third guide rail via a third sliding structure.

[0019] Optionally, the second sliding structure includes:

[0020] A second slider is slidably connected to the first guide rail, and the third guide rail is fixedly mounted on the second slider;

[0021] A second lead screw, threadedly connected to the second slider;

[0022] A second power member is connected to the second lead screw, and the second power member is connected to the controller signal; the second power member is suitable for driving the second lead screw to rotate, thereby driving the second slider to slide along the first guide rail;

[0023] The third sliding structure comprises:

[0024] A third slider is slidably connected to the third guide rail, and the X-ray detector is fixedly mounted on the third slider;

[0025] A third lead screw, threadedly connected to the third slider;

[0026] The third power member is connected to the third lead screw, and the third power member is connected to the controller signal; the third power member is suitable for driving the third lead screw to rotate, and then driving the third slider to slide along the third guide rail.

[0027] Optionally, it also includes:

[0028] a fourth guide rail, arranged in a vertical direction, and slidably connected to the first guide rail via a fourth sliding structure;

[0029] A diode conduction detection probe is slidably connected to the fourth guide rail through a fifth sliding structure; the diode conduction detection probe is connected to the controller signal;

[0030] The junction box quality detection system is suitable for combining the sliding of the cross bar and the sliding of the diode conduction detection probe to move the diode conduction detection probe to contact the two ends of the diode on the junction box, and the diode conduction detection probe sends a signal to the controller to indicate whether the diode is conducting.

[0031] Optionally, the fourth sliding structure includes:

[0032] A fourth slider is slidably connected to the first guide rail, and the fourth guide rail is fixedly mounted on the fourth slider;

[0033] A fourth lead screw, threadedly connected to the fourth slider;

[0034] a fourth power member connected to the fourth lead screw, and the fourth power member is connected to the controller signal; the fourth power member is suitable for driving the fourth lead screw to rotate, thereby driving the fourth slider to slide along the first guide rail;

[0035] The fifth sliding structure comprises:

[0036] A fifth slider is slidably connected to the fourth guide rail, and the diode conduction detection probe is fixedly mounted on the fifth slider;

[0037] a fifth lead screw, threadedly connected to the fifth slider;

[0038] The fifth power member is connected to the fifth lead screw, and the fifth power member is connected to the controller signal; the fifth power member is suitable for driving the fifth lead screw to rotate, and then driving the fifth slider to slide along the fourth guide rail.

[0039] Optionally, it also includes:

[0040] A display screen is connected to the controller signal, and the display screen is suitable for displaying the detection result.

[0041] Optionally, it also includes:

[0042] A warning light is connected to the controller signal, and the warning light is suitable for sending out an alarm signal when the diode is not conducting.

[0043] Optionally, there are multiple junction boxes on the photovoltaic module, and each junction box is detected in turn by the X-ray detector and the diode conduction detection probe.

[0044] The above technical solution of the utility model has the following advantages compared with the prior art:

[0045] 1. The junction box quality inspection system provided by the utility model comprises: a cross bar, which is arranged in a horizontal direction and has a first guide rail along the length direction of the cross bar; an X-ray detector, which is slidably connected to the first guide rail; two longitudinal bars arranged in a horizontal direction and have a second guide rail along the length direction of the longitudinal bars, and the two ends of the cross bar are slidably connected to the second guide rails of the two longitudinal bars through a first sliding structure respectively; the junction box quality inspection system is suitable for combining the sliding of the cross bar and the sliding of the X-ray detector to move the X-ray detector to the top of the junction box and scan and inspect the welding points on the junction box; the present application adopts the above technical solution, and through the movable X-ray detector, it can more efficiently improve the efficiency of inspecting the inside of the welding points of the junction box, while ensuring the accuracy of the inspection results, ensuring that the quality of the output junction box is more reliable, thereby improving the production capacity of photovoltaic modules.

[0046] 2. The junction box quality inspection system provided by the utility model also includes: a controller, which is connected to the X-ray detector signal, and the controller is suitable for obtaining the void ratio according to the scanning condition of the X-ray detector. When the void ratio is less than the set value, the quality of the solder joint is judged to be qualified; the present application adopts the above technical solution to accurately judge whether the quality of the solder joint is qualified through the controller.

[0047] 3. The junction box quality detection system provided by the utility model also includes: a fourth guide rail, which is arranged in the vertical direction, and the fourth guide rail is slidably connected to the first guide rail through a fourth sliding structure; a diode conduction detection probe is slidably connected to the fourth guide rail through a fifth sliding structure; the diode conduction detection probe is connected to the controller signal; the junction box quality detection system is suitable for combining the sliding of the cross bar and the sliding of the diode conduction detection probe to move the diode conduction detection probe to contact the two ends of the diode on the junction box, and the diode conduction detection probe sends a signal to the controller whether the diode is conductive; the present application adopts the above technical solution, and accurately detects whether the diode in the junction box is conductive by moving the diode conduction detection probe, thereby accurately judging the quality of the junction box.

[0048] 4. The junction box quality inspection system provided by the utility model also includes: a display screen, which is connected to the controller signal, and the display screen is suitable for displaying the inspection results; the present application adopts the above technical solution, and it is convenient and intuitive to see whether the quality of the junction box is qualified through the display screen.

[0049] 5. The junction box quality detection system provided by the utility model also includes: a warning light, which is connected to the controller signal, and the warning light is suitable for sending an alarm signal when the diode is not conducting; the present application adopts the above technical solution to timely discover the problem of the diode through the warning light and return it for repair in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0051] Figure 1 The local structure diagram of the junction box quality detection system provided in the embodiment of the utility model is as follows Figure 1 ;

[0052] Figure 2 The local structure diagram of the junction box quality detection system provided in the embodiment of the utility model is as follows Figure 2 .

[0053] Description of reference numerals:

[0054] 1. X-ray detector; 2. Diode conduction detection probe; 3. Crossbar; 4. First guide rail; 5. Longitudinal bar; 6. Second guide rail; 7. Third guide rail; 8. Third power component; 9. Junction box; 10. Soldering point; 11. Diode; 12. Photovoltaic module; 13. Fourth guide rail; 14. Fifth power component. DETAILED DESCRIPTION

[0055] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0056] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0057] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0059] After the visual system based on the AI ​​algorithm completes the inspection of the photovoltaic module, it directly enters the glue filling process without checking the conduction status of the diode on the junction box; after the glue filling is completed, when the IV curve is used to test the abnormality of the photovoltaic module, it is likely to be determined that it is caused by no power or low power due to the non-conduction of the diode. Therefore, when the quality of the solder joint is unqualified or the diode is not conductive, it is necessary to re-solder the junction box or rework the diode installation. With the continuous increase in the output of photovoltaic modules, the production capacity of photovoltaic modules is seriously affected. It is precisely because of the above situation that this application proposes a junction box quality detection system.

[0060] like Figure 1 to Figure 2 A specific implementation of the junction box quality inspection system shown includes: a crossbar 3, an X-ray detector 1, two longitudinal bars 5 arranged in the horizontal direction, a controller, a third guide rail 7, a fourth guide rail 13, a display screen and a warning light. Specifically, the X-ray detector 1 is a miniature X-ray detector.

[0061] like Figure 1 and Figure 2 As shown, the cross bar 3 is arranged in the horizontal direction, and a first guide rail 4 is arranged along the length direction of the cross bar 3. The X-ray detector 1 is slidably connected to the first guide rail 4. Two longitudinal bars 5 are provided with a second guide rail 6 along the length direction of the longitudinal bars 5, and both ends of the cross bar 3 are slidably connected to the second guide rails 6 of the two longitudinal bars 5 through a first sliding structure.

[0062] Specifically, the first sliding structure includes: a first slider, a first lead screw and a first power member. The first slider is slidably connected to the second guide rail 6, and the end of the cross bar 3 is fixedly mounted on the first slider. The first lead screw is threadedly connected to the first slider; the first power member is connected to the first lead screw, and the first power member is connected to the controller signal; the first power member is suitable for driving the first lead screw to rotate, thereby driving the first slider to slide along the second guide rail 6.

[0063] The junction box quality inspection system is suitable for combining the sliding of the cross bar 3 and the sliding of the X-ray detector 1 to move the X-ray detector 1 to the top of the junction box 9 and scan and inspect the welding points 10 on the junction box 9.

[0064] The controller is connected to the X-ray detector 1 by signal, and is adapted to obtain the void ratio according to the scanning condition of the X-ray detector 1. When the void ratio is less than a set value, the quality of the solder joint 10 is determined to be qualified. The void ratio is the ratio of the image area scanned through the solder joint 10 to the total area of ​​the solder joint 10 to be set. The set value may be 20%.

[0065] The third guide rail 7 is arranged between the X-ray detector 1 and the first guide rail 4, the third guide rail 7 is arranged in the vertical direction, and the third guide rail 7 is slidably connected to the first guide rail 4 through a second sliding structure; the X-ray detector 1 is slidably connected to the third guide rail 7 through a third sliding structure.

[0066] Specifically, the second sliding structure includes: a second slider, a second lead screw and a second power member. The second slider is slidably connected to the first guide rail 4, and the third guide rail 7 is fixedly installed on the second slider. The second lead screw is threadedly connected to the second slider. The second power member is connected to the second lead screw, and the second power member is connected to the controller signal; the second power member is suitable for driving the second lead screw to rotate, thereby driving the second slider to slide along the first guide rail 4.

[0067] The third sliding structure comprises: a third slider, a third lead screw and a third power member 8. The third slider is slidably connected to the third guide rail 7, and the X-ray detector 1 is fixedly mounted on the third slider; the third lead screw is threadedly connected to the third slider; the third power member 8 is connected to the third lead screw, and the third power member 8 is connected to the controller signal; the third power member 8 is suitable for driving the third lead screw to rotate, thereby driving the third slider to slide along the third guide rail 7.

[0068] like Figure 1 As shown, the fourth guide rail 13 is arranged in the vertical direction, and the fourth guide rail 13 is slidably connected to the first guide rail 4 through a fourth sliding structure. The diode conduction detection probe 2 is slidably connected to the fourth guide rail 13 through a fifth sliding structure; the diode conduction detection probe 2 is connected to the controller signal; the junction box quality detection system is suitable for combining the sliding of the cross bar 3 and the sliding of the diode conduction detection probe 2 to move the diode conduction detection probe 2 to contact the two ends of the diode 11 on the junction box 9, and the diode conduction detection probe 2 sends a signal to the controller whether the diode is conducting.

[0069] Specifically, the fourth sliding structure includes: a fourth slider, a fourth lead screw and a fourth power member. The fourth slider is slidably connected to the first guide rail 4, and the fourth guide rail 13 is fixedly installed on the fourth slider. The fourth lead screw is threadedly connected to the fourth slider. The fourth power member is connected to the fourth lead screw, and the fourth power member is connected to the controller signal; the fourth power member is suitable for driving the fourth lead screw to rotate, thereby driving the fourth slider to slide along the first guide rail 4.

[0070] The fifth sliding structure includes: a fifth slider, a fifth lead screw and a fifth power member 14. The fifth slider is slidably connected to the fourth guide rail 13, and the diode conduction detection probe 2 is fixedly installed on the fifth slider. The fifth lead screw is threadedly connected to the fifth slider. The fifth power member 14 is connected to the fifth lead screw, and the fifth power member 14 is connected to the controller signal; the fifth power member 14 is suitable for driving the fifth lead screw to rotate, thereby driving the fifth slider to slide along the fourth guide rail 13.

[0071] More specifically, the first power member, the second power member, the third power member 8, the fourth power member and the fifth power member 14 may all be motors.

[0072] The display screen is connected to the controller signal, and the display screen is suitable for displaying the detection result. The warning light is connected to the controller signal, and the warning light is suitable for sending an alarm signal when the diode 11 is not conducting.

[0073] like Figure 1 As shown, there are multiple junction boxes 9 on the photovoltaic assembly 12, and each junction box 9 is detected in turn by the X-ray detector 1 and the diode conduction detection probe 2.

[0074] The main working process of the junction box quality inspection system described in this application is briefly described as follows.

[0075] First, the photovoltaic module 12 is placed under the junction box quality inspection system for positioning; after positioning, the controller issues instructions uniformly.

[0076] Combined with the sliding of the crossbar 3 and the sliding of the X-ray detector 1, the X-ray detector 1 is moved to the top of the first junction box 9. The X-ray detector 1 is started to perform a penetration scan on the solder joint 10 of the first junction box 9; the X-ray detector 1 transmits the scanning status to the controller, and the controller obtains the void ratio. When the void ratio is less than 20%, it is determined that the quality of the solder joint 10 is qualified. Then, the X-ray detector 1 is moved to the top of the second junction box 9 for scanning.

[0077] When the X-ray detector 1 scans the second junction box 9, the diode conduction detection probe 2 moves to contact the two ends of the diode 11 on the first junction box 9. When the diode 11 is conducting, the controller receives the conduction signal and outputs the result on the display screen; when the diode 11 is not conducting, the warning light is turned on.

[0078] With reference to the above process, the detection of the welding points 10 of all the junction boxes 9 on the photovoltaic module 12 and the detection of the diodes 11 are completed in sequence.

[0079] If the welding point 10 or diode 11 is unqualified, it indicates that there is a problem with the junction box 9, and it needs to be taken offline for processing. After processing, the test is performed again until all the junction boxes 9 on the photovoltaic module 12 are qualified; then the junction box 9 on the next photovoltaic module 12 is tested.

[0080] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.

Claims

1. A junction box quality inspection system, characterized in that: include: A crossbar (3) is arranged in a horizontal direction, and a first guide rail (4) is arranged along the length direction of the crossbar (3); An X-ray detector (1) slidably connected to the first guide rail (4); Two longitudinal rods (5) are arranged in the horizontal direction, and second guide rails (6) are arranged along the length direction of the longitudinal rods (5); the two ends of the cross rod (3) are respectively slidably connected to the second guide rails (6) of the two longitudinal rods (5) through a first sliding structure; The junction box quality detection system is suitable for combining the sliding of the cross bar (3) and the sliding of the X-ray detector (1), moving the X-ray detector (1) above the junction box (9), and scanning and detecting the welding points (10) on the junction box (9).

2. The junction box quality inspection system according to claim 1, characterized in that: Also includes: A controller is connected to the X-ray detector (1) by signal, and the controller is suitable for obtaining a void ratio according to a scanning condition of the X-ray detector (1). When the void ratio is less than a set value, it is determined that the quality of the solder joint (10) is qualified.

3. The junction box quality inspection system according to claim 1, characterized in that: The first sliding structure comprises: A first sliding block is slidably connected to the second guide rail (6), and an end of the cross bar (3) is fixedly mounted on the first sliding block; A first lead screw, threadedly connected to the first slider; The first power member is connected to the first lead screw, and the first power member is connected to the controller signal; the first power member is suitable for driving the first lead screw to rotate, thereby driving the first sliding block to slide along the second guide rail (6).

4. The junction box quality inspection system according to claim 1, characterized in that: Also includes: a third guide rail (7) arranged between the X-ray detector (1) and the first guide rail (4), the third guide rail (7) being arranged in a vertical direction, and the third guide rail (7) being slidably connected to the first guide rail (4) via a second sliding structure; The X-ray detector (1) is slidably connected to the third guide rail (7) via a third sliding structure.

5. The junction box quality inspection system according to claim 4, characterized in that: The second sliding structure comprises: A second slider is slidably connected to the first guide rail (4), and the third guide rail (7) is fixedly mounted on the second slider; A second lead screw, threadedly connected to the second slider; A second power member is connected to the second lead screw, and the second power member is connected to the controller signal; the second power member is suitable for driving the second lead screw to rotate, thereby driving the second slider to slide along the first guide rail (4); The third sliding structure comprises: A third slider is slidably connected to the third guide rail (7), and the X-ray detector (1) is fixedly mounted on the third slider; A third lead screw, threadedly connected to the third slider; The third power member (8) is connected to the third lead screw, and the third power member (8) is connected to the controller signal; the third power member (8) is suitable for driving the third lead screw to rotate, thereby driving the third slider to slide along the third guide rail (7).

6. The junction box quality inspection system according to claim 2, characterized in that: Also includes: A fourth guide rail (13) is arranged in a vertical direction, and the fourth guide rail (13) is slidably connected to the first guide rail (4) via a fourth sliding structure; A diode conduction detection probe (2) is slidably connected to the fourth guide rail (13) via a fifth sliding structure; the diode conduction detection probe (2) is connected to a controller signal; The junction box quality detection system is suitable for combining the sliding of the cross bar (3) and the sliding of the diode conduction detection probe (2), moving the diode conduction detection probe (2) to contact the two ends of the diode (11) on the junction box (9), and the diode conduction detection probe (2) sends a signal to the controller to indicate whether the diode is conducting.

7. The junction box quality inspection system according to claim 6, characterized in that: The fourth sliding structure comprises: A fourth slider is slidably connected to the first guide rail (4), and the fourth guide rail (13) is fixedly mounted on the fourth slider; A fourth lead screw, threadedly connected to the fourth slider; a fourth power member connected to a fourth lead screw, and the fourth power member is connected to a controller signal; the fourth power member is adapted to drive the fourth lead screw to rotate, thereby driving the fourth slider to slide along the first guide rail (4); The fifth sliding structure comprises: A fifth slider is slidably connected to the fourth guide rail (13), and the diode conduction detection probe (2) is fixedly mounted on the fifth slider; a fifth lead screw, threadedly connected to the fifth slider; The fifth power member (14) is connected to the fifth lead screw, and the fifth power member (14) is connected to the controller signal; the fifth power member (14) is suitable for driving the fifth lead screw to rotate, thereby driving the fifth slider to slide along the fourth guide rail (13).

8. The junction box quality inspection system according to claim 7, characterized in that: Also includes: A display screen is connected to the controller signal, and the display screen is suitable for displaying the detection result.

9. The junction box quality inspection system according to claim 7, characterized in that: Also includes: A warning light is connected to the controller signal, and the warning light is suitable for sending an alarm signal when the diode (11) is not conducting.

10. The junction box quality inspection system according to claim 7, characterized in that: There are a plurality of junction boxes (9) on the photovoltaic assembly (12), and each junction box (9) is detected in sequence by the X-ray detector (1) and the diode conduction detection probe (2).

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