Photovoltaic module hot spot test equipment and test method thereof

Abstract

The invention discloses photovoltaic module hot spot testing equipment and a testing method thereof, and belongs to the field of photovoltaic testing equipment. The hot spot testing equipment for the photovoltaic module comprises a supporting frame and further comprises a dustproof shell which is fixed over the supporting frame, the top of the dustproof shell is fixedly connected with a tester through a driving part, the two sides of the dustproof shell are fixedly connected with clamping plates through driving parts, and the dustproof shell is fixedly connected with the tester through driving parts. The inner surface of the dustproof shell is fixedly connected with a guide rail; according to the invention, dust, greasy dirt and the like on the surface of the photovoltaic module can be treated, the problems that the dust, greasy dirt and the like adhere to the photovoltaic module to influence an infrared imaging effect and interfere hot spot recognition are prevented, and meanwhile, the dust and greasy dirt of the photovoltaic module are softened in advance, so that the problem that relatively stubborn dust and greasy dirt are difficult to clean is solved; the processing work efficiency is further improved, and the accuracy of the hot spot testing equipment is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic testing equipment, and in particular to a photovoltaic component hot spot testing equipment. Background Art

[0002] In photovoltaic power generation systems, due to the influence of natural conditions, environmental pollution and other factors, some power generation components, namely the surfaces of photovoltaic components, are blocked. The blocked components are transformed from power sources to loads in the series circuit, absorbing the electric energy generated by the other normally working photovoltaic components. The absorbed electric energy is dissipated in the form of heat energy on the blocked components, thereby forming a local heat source in the photovoltaic power generation system. This phenomenon is usually called a hot spot, and it is also the main reason for the hot spot phenomenon. The hot spot phenomenon will reduce the output power of photovoltaic components and accelerate the aging and decline of components, thereby causing the power generated by the photovoltaic power generation system to gradually decay. In order to prevent the energy generated by normally working photovoltaic components from being consumed by the blocked components, it is necessary to test the hot spots.

[0003] During the testing process of existing photovoltaic modules, dust and oil will adhere to the surface of the photovoltaic modules. Since the dust and oil adhered to the photovoltaic modules cannot be processed before testing, it will affect the infrared imaging effect during the test, interfere with hot spot identification, and further reduce the accuracy of the hot spot testing equipment. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the existing technology cannot handle dust and oil stains adhering to photovoltaic modules, which will affect the infrared imaging effect during testing and interfere with hot spot identification, and thus propose a photovoltaic module hot spot testing device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A photovoltaic module hot spot testing device includes a support frame, and also includes: a dustproof shell fixed on the top of the support frame, the top of the dustproof shell is fixedly connected to a tester through a driving part, the two sides of the dustproof shell are fixedly connected to clamping plates through the driving part, the dustproof shell, the inner surface of the dustproof shell is fixedly connected to a guide rail; a processing mechanism, sliding on the surface of the guide rail, the processing mechanism includes a concave seat sliding on the surface of the guide rail, limiting grooves are provided on both sides of the concave seat, the interior of the limiting groove is slidably connected to a guide block, the surface of the guide block is rotatably connected to a cleaning roller through a bearing, and the cleaning roller is used to process the photovoltaic module.

[0007] Preferably, both ends of the cleaning roller respectively penetrate the cleaning roller and extend outside to be fixedly connected with crown gears, the surface of the crown gear is meshingly connected with a gear shaft, the gear shaft is rotatably connected to the side wall of the concave seat through a bracket, the top of the gear shaft is fixedly connected with a cam, the top of the concave seat is respectively fixedly connected with a piston assembly, a container and a spray pipe, the cam is used to drive the piston assembly, and the piston assembly is respectively connected to the container and the spray pipe through pipes.

[0008] Preferably, the piston assembly includes a piston cylinder fixed on the top of the concave seat, the inner wall of the piston cylinder is slidably connected to a piston rod, the end of the piston rod is in contact with a cam, and the surface of the piston cylinder is respectively fixedly connected to a water inlet and a water outlet, the water inlet is connected to the container through a pipe, and the water outlet is connected to the spray pipe through a pipe.

[0009] Preferably, the surface of the piston cylinder also includes an air outlet pipe and an air inlet pipe fixedly connected thereto respectively, and the top of the concave seat is fixedly connected with an air jet pipe, and the air jet pipe is connected to the air outlet pipe through a pipeline.

[0010] Preferably, a return spring is sleeved on the surface of the piston rod, and the end of the return spring fits in the piston cylinder.

[0011] Preferably, a protective door is slidably connected inside the dustproof shell, a guide groove is provided on the front of the protective door, a plug-in mechanism is slidably connected to the surface of the guide groove, and the plug-in mechanism is fixedly connected to the back of the protective door.

[0012] Preferably, the plug-in mechanism includes a fixed block fixed to the back of the protective door, the inner wall of the fixed block is slidably connected with a rhombus column, the two ends of the rhombus column are respectively fixedly connected with a sliding block and a trapezoidal plug-in block, the sliding block is slidably connected to the guide groove, and the end of the trapezoidal plug-in block is clamped in the concave seat.

[0013] Preferably, a return spring is sleeved on the surface of the rhombus column, and two ends of the return spring are respectively fixedly connected to a fixed block and a sliding block.

[0014] Preferably, a tension spring is sleeved on the surface of the guide rail, and two ends of the tension spring are respectively fixedly connected to the dustproof housing and the concave seat.

[0015] A testing method for a photovoltaic module hot spot testing device mainly comprises the following steps:

[0016] S1. Placement: First, place the photovoltaic module with detection in the dustproof housing, and then move the clamping plate through the driving unit to limit and fix the photovoltaic module, so as to adjust the position of the photovoltaic module;

[0017] S2, processing, the protective doors on both sides of the dustproof housing are moved closer to the middle, and when the protective doors are displaced, the plug-in mechanism is driven to move inside the guide groove. Since the plug-in mechanism is plugged into the processing mechanism, the processing mechanism can be driven to move synchronously, and when the processing mechanism moves, the dust and oil on the surface of the photovoltaic module will be processed;

[0018] S3. Detection: After the top of the photovoltaic module is processed, the tester is height-adjusted through the top drive of the dustproof shell to perform a hot spot test on the photovoltaic module.

[0019] Compared with the prior art, the present invention provides a photovoltaic module hot spot testing device, which has the following beneficial effects:

[0020] 1. The photovoltaic module hot spot test equipment can be located on the photovoltaic module for processing through the cooperation between the concave seat, the limit groove, the guide block and the cleaning roller. Through this setting, it is possible to process the dust and oil on the surface of the photovoltaic module, prevent dust and oil from adhering to the photovoltaic module to affect the infrared imaging effect and interfere with the hot spot identification, thereby further improving the accuracy of the hot spot test equipment.

[0021] 2. The photovoltaic module hot spot test equipment can extract the cleaning liquid in the container and then transport it to the spray pipe for spraying through the cooperation between the crown gear, gear shaft, cam and piston assembly. Through this setting, it is possible to soften the dust and oil stains on the photovoltaic module in advance, avoid the problem of difficult cleaning of stubborn dust and oil stains, and further improve the processing efficiency.

[0022] 3. The photovoltaic module hot spot test equipment can form a sealed space through the cooperation between the protective door, the guide groove and the plug-in mechanism. This arrangement can provide a constant working environment for the photovoltaic module test, prevent the test accuracy from being easily affected by the environment during the test, and further improve the operability of the test equipment.

[0023] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The present invention can process dust and oil on the surface of photovoltaic modules to prevent dust and oil from adhering to the photovoltaic modules and affecting the infrared imaging effect and interfering with hot spot identification. At the same time, the dust and oil on the photovoltaic modules are softened in advance to avoid the problem that stubborn dust and oil are difficult to clean, further improving the processing efficiency and the accuracy of the hot spot testing equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the structure of a photovoltaic module hot spot testing device proposed by the present invention;

[0025] Figure 2 A schematic diagram of the processing mechanism structure of a photovoltaic module hot spot test device proposed by the present invention Figure 1 ;

[0026] Figure 3 A schematic diagram of the processing mechanism structure of a photovoltaic module hot spot test device proposed by the present invention Figure 2 ;

[0027] Figure 4 A schematic diagram of the processing mechanism structure of a photovoltaic module hot spot test device proposed by the present invention Figure 3 ;

[0028] Figure 5 A schematic diagram of the processing mechanism structure of a photovoltaic module hot spot test device proposed by the present invention Figure 4 ;

[0029] Figure 6 A photovoltaic module hot spot testing device proposed by the present invention Figure 5 The enlarged structural diagram at A in the middle;

[0030] Figure 7 This is a schematic diagram of the front structure of a photovoltaic module hot spot testing device proposed by the present invention;

[0031] Figure 8 This is a schematic diagram of the AA cross-section structure of a photovoltaic module hot spot testing device proposed by the present invention.

[0032] In the figure: 1. support frame; 2. dustproof shell; 21. protective door; 22. guide groove; 23. plug-in mechanism; 231. fixed block; 232. sliding block; 233. diamond column; 234. trapezoidal plug-in block; 235. reset spring; 3. tester; 4. clamping plate; 5. guide rail; 51. tension spring; 6. processing mechanism; 61. concave seat; 62. limit groove; 63. guide block; 64. cleaning roller; 65. crown gear; 66. gear shaft; 67. cam; 68. piston assembly; 69. container; 610. spray pipe; 681. piston cylinder; 682. piston rod; 683. water inlet; 684. water outlet; 685. air outlet pipe; 686. air inlet pipe; 687. jet pipe; 688. return spring. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position 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 a limitation on the present invention.

[0035] In one embodiment, reference Figure 1-Figure 8 A photovoltaic module hot spot testing device includes a support frame 1, and also includes: a dustproof shell 2, fixed on the top of the support frame 1, the top of the dustproof shell 2 is fixedly connected to a tester 3 through a driving part, the two sides of the dustproof shell 2 are fixedly connected to clamping plates 4 through the driving part, the dustproof shell 2, the inner surface of the dustproof shell 2 is fixedly connected to a guide rail 5; a processing mechanism 6, sliding on the surface of the guide rail 5, the processing mechanism 6 includes a concave seat 61 sliding on the surface of the guide rail 5, and the concave seat 61 is provided with limiting grooves 62 on both sides, and the inner part of the limiting groove 62 is slidably connected to a guide block 63, and the surface of the guide block 63 is rotatably connected to a cleaning roller 64 through a bearing, and the cleaning roller 64 is used to process the photovoltaic module.

[0036] By adopting such a solution, under the drive of the processing mechanism 6, the dust and oil stains on the surface of the photovoltaic module can be processed in advance to prevent the dust and oil stains from adhering to the photovoltaic module and affecting the infrared imaging effect and interfering with the hot spot identification, thereby further improving the accuracy of the hot spot testing equipment.

[0037] During the specific operation, the photovoltaic component to be tested is first placed in the dustproof shell 2, and then the clamping plate 4 is displaced by the driving part to clamp and limit the two sides of the photovoltaic component. After the photovoltaic component is installed, the processing mechanism 6 is displaced through the guide rail 5. When the concave seat 61 and the surface of the guide rail 5 are displaced, the cleaning roller 64 in the concave seat 61 can be driven to move synchronously. When the concave seat 61 contacts the top of the photovoltaic component, due to the different heights of the photovoltaic components, the cleaning roller 64 will drive the guide block 63 to adjust the height up and down in the limiting groove 62, so that the cleaning roller 64 can better contact the photovoltaic component to deal with dust and oil. After the dust and oil on the surface of the photovoltaic panel are dealt with, the tester 3 is moved downward by the driving part on the top of the dustproof shell 2 to perform light testing on the photovoltaic component.

[0038] In addition, the driving part is a cylinder or oil cylinder component, and the surface of the cleaning roller 64 is adhered with non-woven fabric through Velcro covering. The non-woven fabric is used to treat dust and oil on the photovoltaic module. Later, you only need to remove the non-woven fabric and replace it with a new one, so as to avoid the problem of poor treatment effect of the non-woven fabric for a long time.

[0039] In one embodiment, reference Figure 2 , Figure 3 and Figure 4 , a photovoltaic module hot spot testing equipment, including a support frame 1, also includes: a dustproof shell 2, fixed on the top of the support frame 1, the top of the dustproof shell 2 is fixedly connected to the tester 3 through a driving part, the two sides of the dustproof shell 2 are fixedly connected to the clamping plate 4 through the driving part, the dustproof shell 2, the inner surface of the dustproof shell 2 is fixedly connected to the guide rail 5; a processing mechanism 6, sliding on the surface of the guide rail 5, the processing mechanism 6 includes a concave seat 61 sliding on the surface of the guide rail 5, the two sides of the concave seat 61 are provided with a limiting groove 62, the inner surface of the limiting groove 62 is slidably connected to a guide block 63, the surface of the guide block 63 is rotatably connected to a cleaning roller 64 through a bearing, the cleaning roller 64 is used to process the photovoltaic module, the two ends of the cleaning roller 64 respectively penetrate the cleaning roller 64 and extend outside to be fixedly connected, the surface of the crown gear 65 is meshedly connected to a gear shaft 66, the gear shaft 66 is rotatably connected to the side wall of the concave seat 61 through a bracket, the top of the gear shaft 66 is fixedly connected to a cam 67, the concave seat The top of the concave seat 61 is respectively fixedly connected with a piston assembly 68, a container 69 and a spray pipe 610, and the cam 67 is used to drive the piston assembly 68. The piston assembly 68 is connected to the container 69 and the spray pipe 610 through a pipeline. The piston assembly 68 includes a piston cylinder 681 fixed on the top of the concave seat 61. The inner wall of the piston cylinder 681 is slidably connected with a piston rod 682. The end of the piston rod 682 is in contact with the cam 67. The surface of the piston cylinder 681 is respectively fixedly connected with a water inlet 683. And water outlet 684, the water inlet 683 is connected to the container 69 through a pipeline, the water outlet 684 is connected to the spray pipe 610 through a pipeline, the surface of the piston cylinder 681 also includes an air outlet pipe 685 and an air inlet pipe 686 fixedly connected respectively, the top of the concave seat 61 is fixedly connected with an injection pipe 687, the injection pipe 687 is connected to the air outlet pipe 685 through a pipeline, the surface of the piston rod 682 is sleeved with a return spring 688, and the end of the return spring 688 fits in the piston cylinder 681.

[0040] By adopting such a scheme, when the cleaning roller 64 rotates, the piston assembly 68 can be driven synchronously. Therefore, during the driving process of the piston assembly 68, the surface of the photovoltaic module can be sprayed with cleaning liquid and air-dried in advance, thereby cooperating with the cleaning roller 64 to treat the surface of the photovoltaic module, avoiding the problem of inadequate treatment of stubborn oil stains and further improving the treatment work efficiency.

[0041] During specific operation, during the rotation of the cleaning roller 64, the crown gear 65 can be synchronously driven to rotate, and during the rotation of the crown gear 65, the cam 67 fixed to the gear shaft 66 can be driven, and during the driving process of the cam 67, the piston assembly 68 can be reciprocated. Under the drive of the piston assembly 68, the cleaning liquid in the container 69 can be extracted, and then transported to the spray pipe 610 through the pipeline for spraying, so that the dust and oil on the photovoltaic module can be softened in advance, so that the cleaning roller 64 can handle the dust and oil more quickly;

[0042] The piston rod 682 in the piston cylinder 681 fits with the cam 67, and when the cam 67 rotates, the piston rod 682 can be synchronously reciprocated. When the piston rod 682 reciprocates in the piston cylinder 681, when the piston rod 682 is away from the container 69, the one-way valve on the surface of the water inlet 683 on the surface of the piston cylinder 681 is opened, so that the cleaning liquid in the container 69 is drawn into the piston cylinder 681 through the pipeline, and the one-way valve on the surface of the water outlet 684 is closed. When the piston rod 682 approaches the container 69, the one-way valve on the surface of the water inlet 683 is closed, and the one-way valve on the surface of the water outlet 684 is opened, so that the cleaning liquid in the piston cylinder 681 is transported to the spray pipe 610 through the pipeline for spraying, so as to soften the dust and oil on the surface of the photovoltaic module, so that the cleaning roller 64 can better process the photovoltaic module;

[0043] When the piston rod 682 is away from the container 69, the one-way valve on the surface of the air inlet pipe 686 is opened at the same time, so that the air in the dustproof shell 2 can be drawn into the piston cylinder 681, and the one-way valve on the surface of the air outlet pipe 685 is closed. When the piston rod 682 is close to the container 69, the one-way valve on the surface of the air inlet pipe 686 is closed, and the one-way valve on the surface of the air outlet pipe 685 is opened, so that the compressed gas in the piston cylinder 681 is transported to the injection pipe 687 through the pipeline for spraying, so as to air-dry the surface of the photovoltaic module and avoid water stains of the cleaning liquid. Under the spring action of the return spring 688, when the cam 67 protrudes away from the piston rod 682, the piston rod 682 can be automatically moved outward by the return spring 688, so that the piston rod 682 is tightly fitted to the surface of the cam 67.

[0044] In addition, a spring is provided in the limit groove 62, and both ends of the spring are respectively fixed on the limit groove 62 and the guide block 63, so that the downward force of the guide block 63 can be increased. Since the cleaning roller 64 rotates on the surface of the guide block 63, it moves downward synchronously, so that the guide block 63 is closely attached to the surface of the photovoltaic module for processing, so that it is suitable for processing most photovoltaic modules of different heights.

[0045] In one embodiment, reference Figure 5 , Figure 6 and Figure 7 A protective door 21 is slidably connected to the inside of the dustproof shell 2, a guide groove 22 is provided on the front of the protective door 21, a plug-in mechanism 23 is slidably connected to the surface of the guide groove 22, and the plug-in mechanism 23 is fixedly connected to the back of the protective door 21. The plug-in mechanism 23 includes a fixed block 231 fixed to the back of the protective door 21, a diamond column 233 is slidably connected to the inner wall of the fixed block 231, and a sliding block 232 and a trapezoidal plug-in block 234 are respectively fixedly connected at both ends of the diamond column 233, the sliding block 232 is slidably connected to the guide groove 22, and the end of the trapezoidal plug-in block 234 is clamped in the concave seat 61, and a return spring 235 is sleeved on the surface of the diamond column 233, and the two ends of the return spring 235 are respectively fixedly connected to the fixed block 231 and the sliding block 232.

[0046] By adopting such a solution, the protective door 21 is moved closer to the middle, so that separate spaces can be formed in the dustproof shell 2, thereby reducing dust from entering the dustproof shell 2 and affecting the hot spot test effect of the photovoltaic module.

[0047] When the protective door 21 in the dustproof shell 2 moves toward the middle, the protective door 21 will drive the plug-in mechanism 23 to slide along the guide groove 22, and the plug-in mechanism 23 will be plugged into the concave seat 61, so that the concave seat 61 can be driven synchronously, and the fixed block 231 is fixed to the surface of the protective door 21, and the diamond column 233 slides in the fixed block 231. Since the sliding block 232 connected to the end of the diamond column 233 slides in the guide groove 22, when the protective door 21 moves, the diamond column 233 will slide along the guide groove 22, and the trapezoidal plug-in block 234 connected to the end of the diamond column 233 is plugged into the concave seat 61, so that when the protective door 21 moves, the concave seat 61 will be synchronously driven to move toward the middle, and when the sliding block 232 is close to the middle position along the guide groove 22, it will drop to a certain height, and at this time, the trapezoidal plug-in block 234 will separate from the concave seat 61, so as to release the constraint on the concave seat 61;

[0048] When the protective door 21 moves to both sides, due to the inclined surfaces of the trapezoidal plug 234 on both sides, when the trapezoidal plug 234 contacts the concave seat 61 again, the trapezoidal plug 234 will continue to move to both sides, and the concave seat 61 will squeeze the inclined surface of the trapezoidal plug 234 downward, and then move the trapezoidal plug 234 upward under the elastic force of the reset spring 235 and insert the trapezoidal plug 234 into the processing mechanism 6 again, so as to facilitate the subsequent processing of the next group of photovoltaic components.

[0049] In one embodiment, reference Figure 8 A tension spring 51 is sleeved on the surface of the guide rail 5 , and two ends of the tension spring 51 are fixedly connected to the dustproof housing 2 and the concave seat 61 respectively.

[0050] By adopting such a solution, the tension spring 51 is used to automatically reset the processing mechanism 6 to prevent the processing mechanism 6 from being in the center position and affecting the test effect of the tester 3.

[0051] During specific operation, after the trapezoidal plug 234 is separated from the concave seat 61, since there is no restraining force on the surface of the concave seat 61, the concave seat 61 will be automatically reset under the rebound force of the tension spring 51, so as to facilitate the next operation and avoid the concave seat 61 being in the center position to affect the test effect of the tester 3.

[0052] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A photovoltaic module hot spot testing device, comprising a support frame (1), characterized in that: Also includes: A dustproof housing (2) is fixed directly above the support frame (1); the top of the dustproof housing (2) is fixedly connected to a tester (3) via a driving unit; both sides of the dustproof housing (2) are fixedly connected to clamping plates (4) via a driving unit; and the inner surface of the dustproof housing (2) is fixedly connected to a guide rail (5); A processing mechanism (6) slides on the surface of the guide rail (5), the processing mechanism (6) comprising a concave seat (61) sliding on the surface of the guide rail (5), limiting grooves (62) being provided on both sides of the concave seat (61), a guide block (63) being slidably connected inside the limiting groove (62), a cleaning roller (64) being rotatably connected to the surface of the guide block (63) via a bearing, and the cleaning roller (64) being used for processing the photovoltaic module.

2. A photovoltaic module hot spot testing device according to claim 1, characterized in that: Both ends of the cleaning roller (64) respectively penetrate the cleaning roller (64) and extend outside thereof to be fixedly connected with a crown gear (65); the surface of the crown gear (65) is meshingly connected with a gear shaft (66); the gear shaft (66) is rotatably connected to the side wall of the concave seat (61) through a bracket; the top of the gear shaft (66) is fixedly connected with a cam (67); the top of the concave seat (61) is respectively fixedly connected with a piston assembly (68), a container (69) and a spray pipe (610); the cam (67) is used to drive the piston assembly (68); the piston assembly (68) is respectively connected to the container (69) and the spray pipe (610) through a pipeline.

3. A photovoltaic module hot spot testing device according to claim 2, characterized in that: The piston assembly (68) comprises a piston cylinder (681) fixed on the top of the concave seat (61); the inner wall of the piston cylinder (681) is slidably connected to a piston rod (682); the end of the piston rod (682) is in contact with the cam (67); the surface of the piston cylinder (681) is respectively fixedly connected to a water inlet (683) and a water outlet (684); the water inlet (683) is connected to the container (69) through a pipeline; the water outlet (684) is connected to the spray pipe (610) through a pipeline.

4. A photovoltaic module hot spot testing device according to claim 3, characterized in that: The surface of the piston cylinder (681) also includes an air outlet pipe (685) and an air inlet pipe (686) fixedly connected thereto, and the top of the concave seat (61) is fixedly connected to an air jet pipe (687), and the air jet pipe (687) is connected to the air outlet pipe (685) through a pipeline.

5. A photovoltaic module hot spot testing device according to claim 3, characterized in that: A return spring (688) is sleeved on the surface of the piston rod (682), and the end of the return spring (688) fits in the piston cylinder (681).

6. A photovoltaic module hot spot testing device according to claim 1, characterized in that: A protective door (21) is slidably connected inside the dustproof housing (2), a guide groove (22) is provided on the front of the protective door (21), a plug-in mechanism (23) is slidably connected to the surface of the guide groove (22), and the plug-in mechanism (23) is fixedly connected to the back of the protective door (21).

7. A photovoltaic module hot spot testing device according to claim 6, characterized in that: The plug-in mechanism (23) comprises a fixed block (231) fixed on the back of the protective door (21); the inner wall of the fixed block (231) is slidably connected to a rhombus column (233); the two ends of the rhombus column (233) are respectively fixedly connected to a sliding block (232) and a trapezoidal plug-in block (234); the sliding block (232) is slidably connected to the inside of the guide groove (22); and the end of the trapezoidal plug-in block (234) is snap-fitted into the inside of the concave seat (61).

8. A photovoltaic module hot spot testing device according to claim 7, characterized in that: A return spring (235) is sleeved on the surface of the rhombus column (233), and two ends of the return spring (235) are respectively fixedly connected to the fixed block (231) and the sliding block (232).

9. A photovoltaic module hot spot testing device according to claim 1, characterized in that: A tension spring (51) is sleeved on the surface of the guide rail (5), and two ends of the tension spring (51) are respectively fixedly connected to the dustproof housing (2) and the concave seat (61).

10. A method for testing a photovoltaic module hot spot test device, comprising the photovoltaic module hot spot test device according to claim 7, characterized in that: The main steps include: S1, placing, first placing the photovoltaic module with detection in the dustproof housing (2), and then moving the clamping plate (4) through the driving unit to limit and fix the photovoltaic module, thereby adjusting the position of the photovoltaic module; S2, processing, by moving the protective doors (21) on both sides of the dustproof housing (2) toward the middle, when the protective doors (21) are displaced, the plug-in mechanism (23) is driven to move inside the guide groove (22), and because the plug-in mechanism (23) is plugged into the processing mechanism (6), the processing mechanism (6) can be driven to move synchronously, and when the processing mechanism (6) is displaced, dust and oil on the surface of the photovoltaic module are processed; S3, detection, when the top of the photovoltaic module is processed, the tester (3) is adjusted in height through the top driving part of the dustproof shell (2), so as to perform a hot spot test on the photovoltaic module.

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