Photovoltaic module hot spot detection device

Abstract

The utility model discloses a photovoltaic module hot spot detection device which comprises a base, a connecting frame is fixed on the base, an adjusting assembly is arranged on the connecting frame, an infrared thermal imager is arranged on the adjusting assembly, one end of the base is connected with a plurality of supporting columns, rotating shaft driving clamping assemblies are arranged on the supporting columns, and the rotating shaft driving clamping assemblies are arranged on the rotating shaft driving clamping assemblies. Wherein one supporting column can move in a sliding groove of the base, the adjusting assembly comprises a first motor, a screw rod, a limiting rod and an adjusting block, the first motor is arranged on one side of the connecting frame and drives the screw rod to rotate, the limiting rod is arranged on one side of the screw rod, and the adjusting block is arranged on the other side of the screw rod. According to the utility model, the photovoltaic modules with different widths and lengths can be detected, and the universality of the device is better.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic module testing technology, and in particular to a photovoltaic module hot spot detection device. Background Technology

[0002] With the rapid development of science and technology, photovoltaic power generation technology has been widely used both domestically and internationally, mainly for large-scale ground-mounted photovoltaic power stations, rooftops of residential and commercial buildings, building-integrated photovoltaics (BIPV), and photovoltaic streetlights. To achieve the best power generation effect, photovoltaic modules are usually installed in open, sunny areas. However, over time, birds, dust, fallen leaves, and other obstructions inevitably accumulate, creating shadows on the solar cell modules. Due to the presence of these localized shadows, the current and voltage of some individual cells in the photovoltaic module change, resulting in localized temperature rises on the photovoltaic module, known as the "hot spot effect."

[0003] In existing technologies, testing can generally only be performed on photovoltaic modules of the same width and length, which cannot adapt to photovoltaic modules of different lengths and widths, thus limiting the versatility of the testing device.

[0004] In the prior art, a photovoltaic module surface inspection system and its inspection method are disclosed in patent publication number CN118969663A. The system includes an input module, a transfer unit, a flipping module, an inspection module, a welding repair module, an output module, and a control module. The inspection module can perform inspection on the string of cells after they are connected in series, thereby detecting whether there are cold welds or other defects, and troubleshooting problems with the solar panel in an early manner. By setting up the welding repair module, automatic detection, positioning and welding can be performed on the weld strips with cold welds. However, the structure of this technology is too complex, the manufacturing cost is high, and it is not flexible enough for the inspection of photovoltaic modules. Utility Model Content

[0005] The purpose of this invention is to solve the problem that existing detection devices cannot adapt to the detection of photovoltaic modules of different lengths and widths, and to provide a photovoltaic module hot spot detection device with wide applicability.

[0006] Another objective of this invention is to address the problems of complex structure and high manufacturing cost of existing testing devices. This invention uses a base and several support columns on top to connect and hold components, thereby enabling the testing of photovoltaic modules and providing a low-cost and structurally stable photovoltaic module hot spot detection device.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a photovoltaic module hot spot detection device, comprising a base, a fixed connecting frame on the base, an adjustment component on the connecting frame, an infrared thermal imager on the adjustment component, a plurality of support columns connected to one end of the base, a rotating shaft drive clamping component on the support columns, and one of the support columns being movable within a groove in the base.

[0008] Preferably, the adjustment assembly includes a first motor, a screw, a limiting rod, and an adjustment block. The first motor is disposed on one side of the connecting frame, and the first motor drives the screw to rotate.

[0009] Preferably, one side of the screw is the limiting rod, and the limiting rod is fixed on the connecting frame.

[0010] Preferably, the adjusting block is located below the screw, the adjusting block is slidable on the limiting rod, and the infrared thermal imager is located below the adjusting block.

[0011] Preferably, a second motor is fixed to one side of the support column, and the second motor drives the rotating shaft to rotate the clamping assembly.

[0012] Preferably, the clamping assembly includes a clamping frame connected to one end of the rotating shaft.

[0013] Preferably, the clamping frame is provided with a bidirectional lead screw, and the bidirectional lead screw is provided with a central connecting sleeve, and the moving block can slide on the bidirectional lead screw.

[0014] Preferably, a clamping plate is provided on one side of the movable block, and the rocker arm is connected to a bidirectional lead screw to drive the movable block to slide.

[0015] Preferably, the slide groove is provided with a slide rod, a slider is fixed on the slide rod, and a support column is connected above the slider.

[0016] Preferably, the slider has connecting plates on both sides, and the connecting plates are fixed to the base with bolts.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: The cooperation of the bidirectional lead screw, moving block and clamping plate in the clamping assembly of this utility model can effectively clamp photovoltaic modules of different widths, ensuring the stability of the modules during the testing process. In addition, the sliding adjustment of the slider on the sliding rod and the fixed structure can adapt to photovoltaic modules of different lengths, enhancing the versatility of the device for photovoltaic modules of different specifications. In this utility model, the rotating shaft is driven by the second motor to rotate the photovoltaic module. Combined with the adjustable position of the infrared thermal imager, hot spot detection of photovoltaic modules at various angles can be achieved, avoiding blind spots and ensuring the comprehensiveness and accuracy of the detection. The overall structure of this utility model is more stable and easier to manufacture. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the photovoltaic module hot spot detection device of this utility model.

[0019] Figure 2 This utility model Figure 1 Axis view.

[0020] Figure 3 This is a schematic diagram of the clamping component of this utility model.

[0021] In the diagram: 1. Base; 2. Connecting frame; 3. Adjustment assembly; 301. First motor; 302. Screw; 303. Limiting rod; 304. Adjusting block; 4. Infrared thermal imager; 5. Support column; 6. Second motor; 7. Rotating shaft; 8. Clamping assembly; 801. Clamping frame; 802. Bidirectional lead screw; 803. Central connecting sleeve; 804. Moving block; 805. Clamping plate; 806. Rocker arm; 9. Slide groove; 10. Slide rod; 11. Slider; 12. Connecting plate; 13. Bolt; 14. Threaded hole. Detailed Implementation

[0022] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. The described embodiments are only some embodiments of this utility model, and not all embodiments.

[0023] A photovoltaic module hot spot detection device includes a base 1, which serves as the basic support for the entire device and is made of durable materials to ensure the stability and reliability of the device during use. A connecting frame 2 is fixedly mounted above the base 1, and the connecting frame 2 is securely connected to the base 1 by bolts or other fasteners, serving to support and fix an adjustment component 3. The adjustment component 3 is mounted on the connecting frame 2, and its core components include a first motor 301, a screw 302, a limiting rod 303, and an adjusting block 304. The first motor 301 is fixedly connected to the connecting frame 2, providing power to the adjustment component. The screw 302 is rotatably connected to the connecting frame 2, and one end of the screw 302 is fixedly connected to the output end of the first motor 301. When the first motor 301 starts, it drives the screw 302 to rotate. The limiting rod 303 is also fixedly connected to the connecting frame 2, and its function is to form a sliding engagement with the adjusting block 304, ensuring that the adjusting block 304 remains stable during vertical movement and does not shift, thereby ensuring the accuracy of the adjustment. The adjusting block 304 is threadedly connected to the screw 302 and slidably connected to the limiting rod 303. When the screw 302 rotates, the adjusting block 304 moves up and down along the axial direction of the screw 302, thereby adjusting the position of the infrared thermal imager 4. The infrared thermal imager 4 is fixedly installed below the adjusting block 304 and changes position as the adjusting block 304 moves, so as to enable hot spot detection of photovoltaic modules at different locations.

[0024] Multiple support columns 5 are provided at one end of the base 1, which are used to support and fix the clamping assembly 8. Each support column 5 is equipped with a rotating shaft 7, which is rotatably connected to the support column 5 through bearings or other means, allowing the clamping assembly 8 to rotate under the drive of the rotating shaft 7, thereby adjusting the detection angle of the photovoltaic module. The clamping assembly 8 is mounted on the rotating shaft 7 to fix the photovoltaic module to be tested, ensuring its stability during the testing process. In addition, a sliding groove 9 is provided on the base 1, and a sliding rod 10 is provided in the sliding groove 9. A slider 11 is provided on the sliding rod 10, and the slider 11 and the sliding rod 10 achieve relative movement through sliding engagement. A connecting plate 12 is provided on the slider 11, and a bolt 13 is provided on the connecting plate 12. The connecting plate 12 is firmly fixed to the base 1 by the bolt 13, thereby realizing the stable movement of the slider 11 within the sliding groove 9. This design allows one of the support columns 5 to move within the sliding groove 9 via the slider 11, thereby adjusting the position of the clamping assembly 8 to accommodate photovoltaic modules of different sizes.

[0025] In this embodiment, the support column 5 serves to support the clamping component 8, and in cooperation with the second motor 6, it realizes the rotation function of the clamping component, thereby enabling the adjustment of the detection angle of the photovoltaic module.

[0026] Specifically, the support column 5 is fixedly connected to the base 1 by bolts, welding, or other reliable connection methods to ensure stable support of the clamping assembly 8 and the photovoltaic module's weight during the inspection process. A second motor 6 is fixedly installed on one side of the support column 5. The second motor 6 is securely mounted to the side of the support column 5 using bolts or other fasteners to ensure a precise connection between the motor's output shaft and the rotating shaft 7. The rotating shaft 7 and the support column 5 are connected by a rotatable mechanism, typically achieved through bearings or other components, to reduce friction and ensure smooth rotation of the rotating shaft 7. One end of the rotating shaft 7 is fixedly connected to the output end of the second motor 6 via a coupling or other connecting device. When the second motor 6 starts, the rotational power at its output end is transmitted to the clamping assembly 8 through the rotating shaft 7, thereby driving the clamping assembly 8 and the photovoltaic module to rotate. This design allows the photovoltaic module to adjust its angle as needed during inspection, enabling the infrared thermal imager 4 to perform omnidirectional hotspot detection of the photovoltaic module from different directions. Precise control of the second motor 6 allows for accurate rotation of the clamping assembly 8, thereby improving the accuracy and efficiency of the inspection.

[0027] Clamping component 8 is responsible for fixing the photovoltaic module and flexibly adjusting its position according to testing requirements. Its ingenious structural design and simple and convenient operation ensure that the photovoltaic module is stably clamped during testing, while also allowing for flexible position adjustment to meet the requirements of different testing angles and positions.

[0028] The clamping assembly 8 consists of multiple components, including a clamping frame 801, a bidirectional lead screw 802, a central connecting sleeve 803, a moving block 804, a clamping plate 805, and a rocker arm 806. The clamping frame 801, serving as the basic frame of the clamping assembly 8, is made of high-strength material, possessing excellent stability and support capabilities, and can withstand the weight of the photovoltaic module and various external forces that may occur during the testing process. One end of the clamping frame 801 is tightly connected to the other end of the rotating shaft 7 via bolts or other reliable fasteners. This connection method ensures that the clamping assembly 8 can rotate synchronously with the rotating shaft 7, thereby meeting the testing requirements of the photovoltaic module at different angles.

[0029] The bidirectional lead screw 802 is rotatably connected to the clamping frames 801 at both ends, enabling smooth and stable rotation. A central connecting sleeve 803 is located at the center of the bidirectional lead screw 802, providing additional support to ensure its stability during rotation and preventing deformation or damage due to external forces or long-term use. This extends the service life of the clamping assembly 8 and improves its reliability.

[0030] The movable block 804 is rectangular in shape, and its dimensions match the inner cavity of the clamping frame 801, allowing it to fit tightly against the inner wall of the clamping frame 801 and ensuring no shaking or loosening occurs during movement. The movable block 804 is threadedly connected to the bidirectional lead screw 802. This connection allows the movable block 804 to slide smoothly along the axial direction of the bidirectional lead screw 802 within the clamping frame 801 when the bidirectional lead screw 802 rotates. Furthermore, the movable block 804 is also slidably connected to the inner wall of the clamping frame 801. This sliding fit further ensures the stability and accuracy of the movable block 804 during movement, enabling precise position adjustment to meet the clamping requirements of photovoltaic modules of different sizes.

[0031] The clamping plate 805 is tightly connected to the moving block 804 by bolts or other fixing methods, and moves synchronously with the moving block 804. The shape and size of the clamping plate 805 are carefully designed according to the shape of the photovoltaic module, so as to fit closely to the surface of the photovoltaic module and achieve effective clamping of the photovoltaic module. In order to prevent the photovoltaic module from slipping during the testing process, the surface of the clamping plate 805 is also provided with anti-slip textures or pads to ensure that the photovoltaic module remains stable during the testing process and will not loosen due to external forces or vibrations.

[0032] The rocker arm 806 is the operating component of the clamping assembly 8, with one end tightly connected to one end of the bidirectional lead screw 802 via threads or other fixing methods. The operator can easily transmit torque to the bidirectional lead screw 802 by rotating the rocker arm 806, thereby opening and closing the clamping plate 805. This manual operation method is simple and intuitive, allowing the operator to quickly adjust the position of the clamping plate 805 according to actual needs, achieving clamping and releasing of the photovoltaic module. The design of the rocker arm 806 not only improves the convenience of operation but also makes the entire clamping process of the assembly 8 more user-friendly, reducing operational difficulty and improving the efficiency of testing.

[0033] In the photovoltaic module hot spot detection device, the slide rod 10 is tightly connected to the base 1 by high-strength bolts, welding, or other reliable fixing methods, ensuring that the slide rod 10 is fixed and secure on the base 1, providing a solid foundation for the stability of the entire device. The slider 11 is slidably connected to the slide rod 10. This design allows the slider 11 to slide smoothly on the slide rod 10, thereby adjusting the position of the support column 5. The slider 11 and the support column 5 are fixedly connected by bolts or other fasteners, ensuring that the support column 5 is fixed in position on the slider 11 and can move synchronously with the slider 11.

[0034] The slider 11 is also tightly connected to the connecting plate 12 by bolts or other fixing methods. The connecting plate 12 serves as a connection and support, further enhancing the connection strength between the slider 11 and the base 1. The bolt 13 is threadedly connected to the connecting plate 12, which facilitates installation and disassembly while providing sufficient tightening force. The base 1 has multiple threaded holes 14, the position and number of which are carefully designed to ensure precise threaded connection between the bolt 13 and the base 1. The bolt 13 passes through the holes in the connecting plate 12 and tightly engages with the threaded holes 14 in the base 1, thus firmly fixing the connecting plate 12 to the base 1. This structural design not only ensures the stability and reliability of the slider 11, support column 5, and the entire clamping assembly on the base 1, but also enables the entire device to withstand significant external forces and vibrations during use, ensuring smooth operation of the testing process.

[0035] The operation procedure of this utility model device is as follows:

[0036] First, based on the specific length of the photovoltaic module, the operator manually pushes the slider 11, allowing it to slide smoothly along the slide bar 10. The slide bar 10, serving as the sliding track for the slider 11, has a precision-machined surface to ensure smooth and unobstructed movement of the slider 11. Once the slider 11 is adjusted to the appropriate length for the photovoltaic module, the operator tightens the bolts 13 on the connecting plate 12, precisely screwing them into the corresponding threaded holes 14 on the base 1. The distribution of the threaded holes 14 is carefully designed to perfectly match the threads of the bolts 13, ensuring that the bolts 13 securely fix the slider 11 to the slide bar 10. In this way, the entire support column 5 and its related components, including the clamping assembly 8 and the photovoltaic module, are stably fixed in the required position.

[0037] Next, the photovoltaic module to be tested is placed stably within the clamping frame 801. The clamping frame 801 is rationally designed to accommodate photovoltaic modules of different specifications and ensure their stability during testing. The operator rotates the rocker arm 806, which, through its fixed connection to one end of the bidirectional lead screw 802, transmits the rotational force applied by the operator to the bidirectional lead screw 802. The special design of the bidirectional lead screw 802 ensures that the threads at its two ends are in opposite directions. When it rotates, the two moving blocks 804 move in opposite directions along the axial direction of the bidirectional lead screw 802 within the clamping frame 801. Since the moving blocks 804 are tightly connected to the clamping plate 805 by bolts or other fixing methods, the clamping plate 805 moves synchronously with the moving blocks 804, ultimately firmly clamping the photovoltaic module between the two clamping plates 805, ensuring that the photovoltaic module will not loosen or shift during testing.

[0038] After the photovoltaic modules are clamped, the first motor 301 is activated. The first motor 301 drives the screw 302 to rotate via a fixed connection between its output end and the screw 302. The screw 302 is threadedly connected to the adjusting block 304. When the screw 302 rotates, the adjusting block 304 moves horizontally along the axis of the screw 302. Since the infrared thermal imager 4 is fixedly installed below the adjusting block 304, the movement of the adjusting block 304 causes the infrared thermal imager 4 to move synchronously, thereby enabling the detection of different positions of the photovoltaic modules. This design allows operators to flexibly adjust the position of the infrared thermal imager 4 as needed, ensuring comprehensive inspection of the photovoltaic modules.

[0039] When the detection angle of the photovoltaic module needs to be adjusted, the second motor 6 is activated. The second motor 6 drives the rotating shaft 7 to rotate through a fixed connection between its output end and one end of the rotating shaft 7. The rotating shaft 7 and the support column 5 are connected smoothly via bearings or other rotating connections. When the rotating shaft 7 rotates, the entire clamping assembly 8 and the clamped photovoltaic module will rotate horizontally by a certain angle around the axis of the rotating shaft 7. In this way, the operator can flexibly adjust the angle of the photovoltaic module according to the detection requirements, and detect it from different directions, ensuring the accuracy and comprehensiveness of the detection results.

[0040] For those skilled in the art, the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention.

Claims

1. A photovoltaic module hot spot detection apparatus, characterized by, Including base, fixedly connected with connecting frame on the base, adjusting assembly is arranged on the connecting frame, infrared thermal imager is arranged on the adjusting assembly, a plurality of support columns are connected with one end of the base, pivot drive clamping assembly is arranged on the support column, one of the support columns is movable in the sliding groove of the base.

2. A hot spot detection device for a photovoltaic module according to claim 1, wherein The adjusting assembly comprises a first motor, a screw rod, a limiting rod and an adjusting block, the first motor is arranged on one side of the connecting frame, and the first motor drives the screw rod to rotate.

3. A hot spot detection device for a photovoltaic module according to claim 2, wherein One side of the screw rod is the limiting rod, and the limiting rod is fixed on the connecting frame.

4. A hot spot detection device for a photovoltaic module according to claim 2 or 3, characterized in that The adjusting block is arranged below the screw rod, the adjusting block is slidable on the limiting rod, and the infrared thermal imager is arranged below the adjusting block.

5. A hot spot detection device for a photovoltaic module according to claim 1 or 2, wherein A second motor is fixed on one side of the support column, and the second motor drives the pivot to rotate the clamping assembly.

6. A hot spot detection device for a photovoltaic module according to claim 5, wherein, The clamping assembly comprises a clamping frame, a moving block and a rocker, and one end of the clamping frame is connected with the pivot.

7. A photovoltaic module hot spot detection device according to claim 6, wherein, A bidirectional screw rod is arranged in the clamping frame, a center connecting sleeve is arranged in the bidirectional screw rod, and the moving block is slidable on the bidirectional screw rod.

8. A photovoltaic module hot spot detection device according to claim 7, wherein, A clamping plate is arranged on one side of the moving block, and the rocker is connected with the bidirectional screw rod to drive the moving block to slide.

9. The photovoltaic module hot spot detection device of claim 1, wherein, A sliding rod is arranged in the sliding groove, the sliding rod is fixed with a sliding block, and the sliding block is connected with the support column.

10. A photovoltaic module hot spot detection device according to claim 9, wherein, Connecting plates are arranged on both sides of the sliding block, and the connecting plates are fixed on the base by bolts.

Images