Photovoltaic panel surface defect detection device

Abstract

The utility model is applicable to the field of photovoltaic panel detection, and provides a photovoltaic panel surface defect detection device, which comprises a detection piece, an adjusting piece and a limiting piece, the detection piece comprises a detection table, the upper surface of the detection table is connected with a detection frame, the limiting piece is arranged between the detection table and the detection frame, and the adjusting piece is connected with the limiting piece. Two line scanning cameras 2048 * 8k pixel + green light backlight sources are mounted in the detection frame and cover the full width of the photovoltaic panel; the detection table is provided with a surface array camera with 12 million pixels, a polarization ring light source and a thermal infrared imager; according to the utility model, automatic detection is efficient, the two sides and the surface of the photovoltaic panel are synchronously detected, manual visual detection is replaced, the detection efficiency and accuracy are greatly improved, and missing detection and false detection are reduced; and the distance between the two limiting frames is adjusted through the first motor and the threaded rod, the device is suitable for detection of photovoltaic panels of different sizes, diversified production requirements are met, and the universality of the device is improved.

Description

Technical Field

[0001] The utility model belongs to the field of photovoltaic panel detection, and in particular relates to a photovoltaic panel surface defect detection device. Background Art

[0002] With the booming photovoltaic industry, photovoltaic panels, as core components of photovoltaic power generation systems, have a high production quality that directly impacts the performance and profitability of the entire system. The photovoltaic panel production process is complex, from silicon material purification, slicing, cell preparation, to module packaging. Each step can lead to defects such as hidden cracks, scratches, and breakage on the panel surface due to process fluctuations, insufficient equipment precision, and environmental interference.

[0003] Defects like hidden cracks are like hidden ticking time bombs. Initially, they may be subtle cracks, imperceptible to the naked eye. However, as photovoltaic panels are subjected to light, temperature cycles, and mechanical stress, they expand, reducing the photovoltaic cell's photoelectric conversion efficiency. They can also trigger hot spot effects, causing localized overheating, accelerating panel aging, and even leading to module failure in severe cases. Scratches in critical areas can damage structures such as the anti-reflective coating on the panel's surface, increasing light reflection loss and weakening its power generation capacity. Damage directly affects the panel's physical integrity, potentially exposing internal circuitry and causing short circuits, significantly shortening its service life.

[0004] For example, a Chinese patent (publication number: CN221388015U) discloses a detection device for photovoltaic panel production, which relates to the technical field of photovoltaic panels. The utility model includes a bracket, a first motor is provided on the surface of the bracket, a round roller is provided on the surface of the bracket, a detector is provided on the surface of the bracket, and a cleaning device is provided on the surface of the bracket. The cleaning device includes a placement block, the placement block is fixedly connected to the bracket, a threaded rod is rotatably connected to the surface of the placement block, one end of the threaded rod is fixedly connected to the second motor, the second motor is fixedly connected to the placement block, a moving block is threadedly connected to the surface of the threaded rod, and a cleaning brush is fixedly connected to one side of the moving block. The utility model can clean dust and debris on the surface of the photovoltaic panel by using the cleaning device, so as to avoid the situation where dust and other debris on the surface of the photovoltaic panel affect the detection result when detecting defects in the appearance of the photovoltaic panel, thereby improving the use effect of the detection device. However, the detection device can only detect one side of the photovoltaic panel at a time, and the detection efficiency is low;

[0005] For example, Chinese patent (CN218212682U) discloses a photovoltaic module defect detection device, wherein a circular plate is movably mounted laterally at the top center of the first protective horizontal plate, an adjustment box is fixedly mounted longitudinally at the top center of the circular plate, a connecting cross bar is movably mounted laterally at the upper inner side of the adjustment box, a fixing plate is fixedly mounted at one end of the connecting cross bar, an infrared camera is mounted laterally at the center of the outer surface of the fixing plate, and a signal transmitter is fixedly mounted at the lower center of the outer surface of the fixing plate. This photovoltaic module defect detection device changes the orientation of the photovoltaic panel through a fixed block, an arc rod, and a U-shaped clamping plate, so that the orientation of the photovoltaic panel can change with the position of the sun. However, during the process of inspecting the photovoltaic module, the detection device needs to control the movement of the infrared camera in order to inspect the corresponding side of the photovoltaic module, resulting in low detection efficiency.

[0006] Therefore, a photovoltaic panel surface defect detection device is needed to solve the above problems. Utility Model Content

[0007] The purpose of the embodiments of the present invention is to provide a photovoltaic panel surface defect detection device to solve the problems raised in the above background technology.

[0008] To achieve the above objectives, the present invention provides the following technical solutions:

[0009] A photovoltaic panel surface defect detection device includes a detection component, an adjustment component, and a limiter. The detection component includes a detection platform, the upper surface of which is connected to a detection frame. The limiter is arranged between the detection platform and the detection frame. The detection frame is equipped with two line scan cameras with 2048×8k pixels and a green backlight, covering the full width of the photovoltaic panel. The detection platform is equipped with a 12-megapixel area array camera, a polarized ring light source, and an infrared thermal imager.

[0010] The adjusting member includes a first motor and a threaded rod, wherein the threaded rod is rotatably connected to the detection platform, one end of the threaded rod is connected to the first motor, and the first motor is fixedly connected to one side of the detection platform;

[0011] The limiting member includes two limiting frames and a conveying member, the lower surfaces of the two limiting frames are connected with threaded blocks, and the threaded rod is threadedly connected in the two threaded blocks;

[0012] The conveying member includes a second motor and two rotating rollers, both of which are rotatably connected to the limiting frame, the second motor is connected to one side of the limiting frame, the output shaft of the second motor is connected to one of the rotating rollers, the two rotating rollers are externally connected to the conveyor belt, and the limiting frame is rotatably connected to a plurality of rollers;

[0013] Pressure sensors are provided in several of the front rollers, and the tops of the several rollers are connected to a controller via conductive rings and cables, and the controller is connected to one side of the limit frame.

[0014] According to a further technical solution, two first limiting grooves and two second limiting grooves are provided in the detection platform.

[0015] According to a further technical solution, a guide rod is connected to the second limiting groove, and the position of the threaded rod corresponds to the position of the first limiting groove.

[0016] According to a further technical solution, the threaded block is slidably connected in the first limiting groove, the lower surface of the limiting frame is connected with a guide block, the guide block is slidably connected outside the guide rod, and the guide block is slidably connected in the second limiting groove.

[0017] According to a further technical solution, the conveyor belt is arranged in a limiting frame and is arranged below the roller.

[0018] According to a further technical solution, the adjacent sides of the two limiting frames are rotatably connected to a plurality of placement rollers, and the corresponding plurality of placement rollers are staggered.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] This new type of system has high efficiency and automatic detection, and can detect both sides and the surface of photovoltaic panels simultaneously, replacing manual visual inspection, greatly improving detection efficiency and accuracy, and reducing missed detection and false detection;

[0021] The utility model is adaptable to different sizes. The distance between the two limit frames is adjusted by the first motor and the threaded rod. It is adaptable to the detection of photovoltaic panels of different sizes, meets diversified production needs, and improves the versatility of the device.

[0022] The utility model has stable and safe transportation. The limiter clamps the photovoltaic panel and combines it with the conveyor belt for transportation. The roller reduces friction. The photovoltaic panel is not easily deviated or dropped during transportation, ensuring the stability of the inspection process and avoiding the impact of transportation problems on the inspection results.

[0023] The utility model has precise and controllable clamping: the pressure sensor in the roller monitors the clamping force, and the controller adjusts the first motor according to the pressure value, accurately controlling the clamping force to protect the photovoltaic panel from damage and ensure the limit stability.

[0024] In order to more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of the utility model in a frontal perspective;

[0026] Figure 2 This is a schematic diagram of the structure of the utility model when viewed from above;

[0027] Figure 3 This is a schematic diagram of the structure of the limiting frame of the utility model in a front view;

[0028] Figure 4 This is a schematic diagram of the structure of the limiting frame of the utility model in a three-dimensional side view;

[0029] Figure 5 It is a schematic diagram of the three-dimensional cross-sectional structure of the limiting frame of the utility model.

[0030] In the figure: 1. detection part; 11. detection table; 12. detection frame; 2. adjustment part; 21. first motor; 22. threaded rod; 3. guide rod; 4. limit part; 41. limit frame; 42. threaded block; 43. guide block; 44. conveying part; 441. second motor; 442. rotating roller; 443. conveyor belt; 45. roller; 46. controller; 5. placement roller; 6. first limit slot; 7. second limit slot. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0032] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0033] Example 1

[0034] like Figure 1-Figure 5 As shown, an embodiment of the present invention provides a photovoltaic panel surface defect detection device, including a detection component 1, an adjustment component 2, and a limiter 4. The detection component 1 includes a detection platform 11, the upper surface of the detection platform 11 is connected to a detection frame 12, and the limiter 4 is arranged between the detection platform 11 and the detection frame 12. The detection frame 12 is equipped with two line scan cameras with 2048×8k pixels and a green backlight, covering the full width of the photovoltaic panel; the detection platform 11 corresponding to the detection frame 12 is equipped with a 12-megapixel area array camera, a polarized ring light source, and an infrared thermal imager;

[0035] The adjusting member 2 includes a first motor 21 and a threaded rod 22. The threaded rod 22 is rotatably connected to the detection platform 11. One end of the threaded rod 22 is connected to the first motor 21. The first motor 21 is fixedly connected to one side of the detection platform 11.

[0036] The limiting member 4 includes two limiting frames 41 and a conveying member 44. The lower surfaces of the two limiting frames 41 are connected to threaded blocks 42, and the threaded rod 22 is threadedly connected in the two threaded blocks 42;

[0037] The conveying member 44 includes a second motor 441 and two rotating rollers 442. The two rotating rollers 442 are both rotatably connected to the limiting frame 41. The second motor 441 is connected to one side of the limiting frame 41. The output shaft of the second motor 441 is connected to one of the rotating rollers 442. The two rotating rollers 442 are externally connected to a conveyor belt 443. The limiting frame 41 is internally rotatably connected to a plurality of rollers 45.

[0038] Pressure sensors are provided in several of the front rollers 45 , and the tops of the several rollers 45 are connected to a controller 46 via conductive rings and cables. The controller 46 is connected to one side of the limiting frame 41 .

[0039] Two first limiting grooves 6 and two second limiting grooves 7 are provided in the testing platform 11;

[0040] The guide rod 3 is connected to the second limiting groove 7, and the position of the threaded rod 22 corresponds to the position of the first limiting groove 6;

[0041] The threaded block 42 is slidably connected to the first limiting groove 6. The first limiting groove 6 can limit the threaded block 42 so that the threaded block 42 is not easily rotated under the action of the rotating threaded rod 22.

[0042] A guide block 43 is connected to the lower surface of the limiting frame 41. The guide block 43 is slidably connected to the outside of the guide rod 3. The guide block 43 is slidably connected to the second limiting groove 7. The guide rod 3 and the second limiting groove 7 can double-limit the guide block 43, so that the limiting frame 41 connected to the guide block 43 can move smoothly along the axial direction of the guide rod 3 under the action of the rotating threaded rod 22.

[0043] The conveyor belt 443 is arranged in the limiting frame 41 and below the roller 45. The roller 45 contacts both sides of the metal frame outside the photovoltaic panel, and the conveyor belt 443 contacts the bottom of the metal frame outside the photovoltaic panel, so that the photovoltaic panel is located between the two limiting frames 41 and will not be blocked by the limiting frames 41.

[0044] In this embodiment, when the photovoltaic panel needs to be inspected, the spacing between the two limit frames 41 is first adjusted according to the size of the photovoltaic panel. First, the two sides of the metal frame outside the photovoltaic panel are placed on the suspended placement roller 5, and the first motor 21 is controlled to work. The working first motor 21 drives the threaded rod 22 to rotate, and the rotating threaded rod 22 drives the two threaded blocks 42 to approach each other. The two threaded blocks 42 approaching each other drive the two limit frames 41 to approach each other, so that both sides of the metal frame outside the photovoltaic panel are moved into the limit frames 41 and contact with a number of rollers 45 respectively, and the limit frames 41 are moved by the rollers. 45 clamps the photovoltaic panel. During this process, the pressure sensor in the roller 45 monitors the clamping force. When the clamping force reaches the set pressure value, the controller 46 controls the first motor 21 to stop working and controls the second motor 441 to work. The working second motor 441 drives the conveyor belt 443 to rotate through the rotating roller 442. The two rotating conveyor belts 443 convey the photovoltaic panel toward the detection frame 12, so that the photovoltaic panel moves into the detection frame 12. The detection structure set on the side close to the detection frame 12 and the detection table 11 can simultaneously detect both sides of the photovoltaic panel, and the detection is fast.

[0045] Because the photovoltaic panel is clamped and fixed between the two limit frames 41, when the photovoltaic panel is being transported, the moving photovoltaic panel drives the roller 45 to roll in the limit frame 41. The roller 45 reduces the friction between the limit frame 41 and the side of the photovoltaic panel, so that the photovoltaic panel can move smoothly under the action of the rotating conveyor belt 443. In this process, the limit member 4 can limit and position the photovoltaic panel, so that the photovoltaic panel is not easily deviated or even falls from the conveying structure during transportation, so that the photovoltaic panel can be safely and accurately transported to the position to be detected.

[0046] Furthermore, since the distance between the two limiting frames 41 is adjustable, the device can limit and detect photovoltaic panels of different sizes.

[0047] Example 2

[0048] The difference between this embodiment and the first embodiment is that: the adjacent sides of the two limiting frames 41 are both rotatably connected to a plurality of placement rollers 5 , and the corresponding plurality of placement rollers 5 are staggered.

[0049] In this embodiment, several staggered placement rollers 5 can be used to support the photovoltaic panel before clamping. The photovoltaic panel only needs to be placed on the placement rollers 5, and the limit members 4 are controlled to approach each other. The limit members 4 that are close to each other can clamp and position the photovoltaic panel, and during this process, the operator does not need to hold the photovoltaic panel continuously.

[0050] The circuits, electronic components and modules involved are all existing technologies and can be fully implemented by those skilled in the art. Needless to say, the content protected by this utility model does not involve improvements to software and methods.

[0051] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A photovoltaic panel surface defect detection device, comprising a detection member (1), an adjustment member (2) and a limit member (4), characterized in that: The detection member (1) includes a detection table (11), the upper surface of the detection table (11) is connected to a detection frame (12), the limit member (4) is arranged between the detection table (11) and the detection frame (12), and the detection frame (12) is installed with two line scan cameras with 2048×8k pixels + green light backlight, covering the full width of the photovoltaic panel; the detection table (11) is installed with one area array camera with 12 million pixels + polarized ring light source + infrared thermal imager; The adjusting member (2) comprises a first motor (21) and a threaded rod (22), wherein the threaded rod (22) is rotatably connected to the detection platform (11), one end of the threaded rod (22) is connected to the first motor (21), and the first motor (21) is fixedly connected to one side of the detection platform (11); The limiting member (4) includes two limiting frames (41) and a conveying member (44), the lower surfaces of the two limiting frames (41) are connected to threaded blocks (42), and the threaded rod (22) is threadedly connected in the two threaded blocks (42); The conveying member (44) includes a second motor (441) and two rotating rollers (442), the two rotating rollers (442) are both rotatably connected in the limiting frame (41), the second motor (441) is connected to one side of the limiting frame (41), the output shaft of the second motor (441) is connected to one of the rotating rollers (442), the two rotating rollers (442) are externally connected to a conveyor belt (443), and the limiting frame (41) is internally rotatably connected to a plurality of rollers (45); Pressure sensors are provided in several of the front rollers (45), and the tops of the several rollers (45) are connected to a controller (46) via conductive rings and cables. The controller (46) is connected to one side of the limit frame (41).

2. The photovoltaic panel surface defect detection device according to claim 1, characterized in that: Two first limiting grooves (6) and two second limiting grooves (7) are provided in the detection platform (11).

3. The photovoltaic panel surface defect detection device according to claim 2, characterized in that: A guide rod (3) is connected to the second limiting groove (7), and the position of the threaded rod (22) corresponds to the position of the first limiting groove (6).

4. The photovoltaic panel surface defect detection device according to claim 1, characterized in that: The threaded block (42) is slidably connected in the first limiting groove (6), the lower surface of the limiting frame (41) is connected with a guide block (43), the guide block (43) is slidably connected to the outside of the guide rod (3), and the guide block (43) is slidably connected in the second limiting groove (7).

5. The photovoltaic panel surface defect detection device according to claim 1, characterized in that: The conveyor belt (443) is arranged in the limiting frame (41), and the conveyor belt (443) is arranged below the roller (45).

6. The photovoltaic panel surface defect detection device according to claim 1, characterized in that: The adjacent sides of the two limiting frames (41) are both rotatably connected to a plurality of placement rollers (5), and the corresponding plurality of placement rollers (5) are staggered.

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