A temperature collection device for the back plate of a building photovoltaic module

Abstract

The present invention provides a temperature acquisition device for the back panel of a building photovoltaic module, relating to the technical field of temperature acquisition technology for the back panel of a photovoltaic module. The device comprises: a positioning carrier plate, a connecting plate installed on the side of the positioning carrier plate, and a protective cover installed on the side of the positioning carrier plate via the connecting plate; a positioning plate installed on the outside of the rotating ring; an adjusting rod rotatably installed inside the positioning plate; a telescopic arm assembly installed at both ends of the adjusting rod; a guide rod rotatably installed on the output end of the telescopic arm assembly; a reflecting frame installed on the side of the guide rod, and reflectors installed on both sides of the reflecting frame. Sunlight can be accurately reflected onto water droplets present at the temperature detection element, improving the efficiency of water droplet evaporation. The light combined with the airflow can quickly and effectively remove the water droplets, thereby solving the problem of large errors in the detected temperature data caused by the slow evaporation of water droplets due to the lack of sunlight on the back of the photovoltaic module.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic module back plate temperature collection, and in particular to a temperature collection device for a building photovoltaic module back plate. Background Art

[0002] Building photovoltaic modules will generate a certain amount of heat during operation. If the heat cannot be dissipated in time, the temperature of the cells will rise, thereby reducing the power generation efficiency. The backplane of the photovoltaic module has a certain heat dissipation performance, which can conduct the heat generated by the cells and keep the operating temperature of the module within a reasonable range. A temperature acquisition device is needed to detect and collect the temperature of the backplane of the photovoltaic module, so as to optimize and adjust the operating parameters of the photovoltaic system.

[0003] In the prior art, when a temperature acquisition device detects the temperature of the back plate of a photovoltaic module, the temperature acquisition device is usually installed on the outside of the back plate of the photovoltaic module. However, in spring and autumn, due to the large temperature difference between day and night, water droplets are easily condensed on the back of the photovoltaic module. At the same time, due to the lack of sunlight on the back of the photovoltaic module, the evaporation rate of the water droplets is slow. The water droplets gather together to form a large area of ​​water film or water droplets, which interferes with the heat exchange process between the temperature acquisition device and the back plate, resulting in large errors in the temperature data detected by the temperature acquisition device. Summary of the Invention

[0004] The present invention relates to a temperature acquisition device for the back plate of a building photovoltaic module, so as to solve the problem that water droplets are easily condensed on the back of the photovoltaic module due to the large temperature difference between day and night in spring and autumn. At the same time, due to the lack of sunlight on the back of the photovoltaic module, the water droplets evaporate slowly. The water droplets gather together to form a large area of ​​water film or water droplets, which interferes with the heat exchange process between the temperature acquisition device and the back plate, resulting in large errors in the temperature data detected by the temperature acquisition device.

[0005] The present invention provides a temperature collection device for the back plate of a building photovoltaic module, which specifically includes: a positioning carrier plate, a connecting plate is installed on the side of the positioning carrier plate, and a protective cover is installed on the side of the positioning carrier plate through the connecting plate; positioning support plates are installed on the outer sides of both ends of the protective cover; a positioning ring is installed on the outer end of the positioning support plate; the positioning ring is an annular structure, and a rotating ring is slidably installed on the outer side of the positioning ring; a positioning plate is installed on the outer side of the rotating ring; an adjusting rod is rotatably installed inside the positioning plate; telescopic arm assemblies are installed at both ends of the adjusting rod; a guide rod is rotatably installed on the output end of the telescopic arm assembly; the guide rod is a cylindrical structure, and a reflection frame is installed on the side of the guide rod, wherein reflectors are installed on both sides of the reflection frame.

[0006] Furthermore, drive screws are rotatably installed inside both sides of the positioning carrier; drive wheels are installed on the drive screws, wherein the drive wheels are rotatably installed in the middle position of both sides of the positioning carrier; a guide slide rod is slidably installed inside the positioning carrier.

[0007] Furthermore, the guide slide rod is a cylindrical structure, and the side ends of the guide slide rod and the driving screw rod are rotatably mounted with fixed plates; the inner end of the fixed plate is mounted with a spring, and the inner end of the fixed plate is mounted with a force plate through the spring.

[0008] Furthermore, a spring is installed on the inner side of the fixed plate, a fixed clamping plate is installed on the inner side of the fixed plate through the spring, and a flip plate is rotatably installed on the inner side of the fixed plate.

[0009] Furthermore, a through guide groove is provided in the middle position and on both sides of the flip plate, and the side end of the flip plate is slidably installed on the inner side of the fixed splint; a traction plate is installed on the side end of the force-bearing plate; a guide protrusion is installed on the side end of the traction plate, and the guide protrusion at the side end of the traction plate is slidably installed inside the guide groove.

[0010] Furthermore, the protective cover is a rectangular frame structure, and three equidistantly distributed temperature detection elements are installed on the inner side of the protective cover, and fixed support plates are installed on both ends of the outer side of the protective cover; a deflector is installed in the middle position of the fixed support plate.

[0011] Furthermore, three guide grooves with different directions are opened at the inner end of the air guide cover, wherein the guide grooves are inclined toward the direction of the temperature detection element; a rotating rod is rotatably installed in the middle position inside the air guide cover; the rotating rod is a cylindrical structure, and fan blades are installed on the outside of the rotating rod, and the fan blades are inside the air guide cover.

[0012] Furthermore, a transmission rod is rotatably installed on the side of the fixed support plate; a fan blade is installed on the outer end of the transmission rod, and a pulley is installed on the outer side of the transmission rod, and the transmission rod is connected to the outer side of the rotating rod through the pulley.

[0013] Furthermore, a driving cylinder and a battery are installed on the outer side of the fixed support plate, and a limit plate is installed on the output end of the driving cylinder; the limit plate is an arc-shaped plate structure, and the limit plate is slidably installed on the outer side of the transmission rod.

[0014] Furthermore, the rotating ring is an annular structure, and a fixing bolt is rotatably installed on the side of the rotating ring, and the inner end of the fixing bolt is installed on the side of the positioning ring; a fixing bolt is rotatably installed on the side of the positioning plate, and the inner end of the fixing bolt is installed on the side of the adjusting rod.

[0015] The present invention provides a temperature collection device for a building photovoltaic module back plate, which has the following beneficial effects:

[0016] When the present invention is in use, the reflecting frame is driven to a suitable tilt angle by adjusting the rotating ring, the adjusting rod and the telescopic arm assembly, so that the reflector on the reflecting frame can accurately adjust the angle and position of the reflected light, ensuring that during a specific time period in the morning, the sunlight can be accurately reflected to the water droplets existing at the temperature detection element, thereby improving the efficiency of water droplet evaporation, and making the light cooperate with the airflow to quickly and effectively clean the water droplets. The timely cleaning of the water droplets avoids the change of the heat conduction characteristics of the back plate surface due to the aggregation of water droplets, reduces the influence of water droplets on the temperature detection of the temperature detection element, and improves the accuracy and reliability of the temperature collection of the back plate of the building photovoltaic module.

[0017] The light reflected by the reflective frame will not continuously shine on the temperature detection element, avoiding interference with the temperature detection element caused by long-term reflected light, ensuring that the temperature detection element can continuously and stably collect temperature data under normal working conditions, and ensuring the accuracy and continuity of the temperature data.

[0018] In addition, the distance between the two fixing plates can be flexibly adjusted according to the width of the building's photovoltaic modules, enabling snap-on installation on both sides of photovoltaic modules of different widths. This can accommodate photovoltaic modules of various specifications without the need for specialized customization of modules of different sizes, greatly improving the versatility of the device and reducing its use costs.

[0019] The structural design of the entire device is simple and clear. During the installation process, the adjustment and tightening of the fixed plate spacing can be completed by simply turning the drive wheel. No complicated tools and professional skills are required, which greatly reduces the installation difficulty and operation time. Even during the later maintenance process, the device can be easily removed from the photovoltaic module by simply following the reverse steps of the installation, which facilitates the inspection and replacement of parts or other maintenance work on the device, reducing maintenance time and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments are briefly introduced below.

[0021] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0022] In the attached figure:

[0023] Figure 1 A schematic diagram showing the overall structure of the present invention;

[0024] Figure 2 A schematic diagram of the three-dimensional structure of the guide slide bar of the present invention is shown;

[0025] Figure 3 A schematic cross-sectional view of the fixing plate of the present invention is shown;

[0026] Figure 4 A schematic diagram of the three-dimensional structure of the flip plate of the present invention is shown;

[0027] Figure 5 A schematic cross-sectional view of the protective cover of the present invention is shown;

[0028] Figure 6 A schematic cross-sectional view of the structure of the air guide cover of the present invention is shown;

[0029] Figure 7 It shows a schematic cross-sectional structure diagram of the rotating ring of the present invention;

[0030] Figure 8 A schematic cross-sectional view of the positioning plate of the present invention is shown;

[0031] Figure 9 A schematic diagram of the three-dimensional structure of the reflection frame of the present invention is shown.

[0032] Reference Signs List

[0033] 1. Positioning carrier plate; 101. Driving screw; 102. Driving wheel; 103. Guide slide; 104. Fixing plate; 105. Load-bearing plate; 106. Fixing splint; 107. Turning plate; 108. Guide groove; 109. Pulling plate;

[0034] 2. Protective cover; 201. Temperature detection element; 202. Fixed support plate; 203. Flow guide cover; 204. Flow guide groove; 205. Rotating rod; 206. Transmission rod; 207. Limit plate;

[0035] 3. Positioning support plate; 301. Positioning ring; 302. Rotating ring; 303. Positioning plate; 304. Adjusting rod; 305. Telescopic arm assembly; 306. Guide rod; 307. Reflection frame. DETAILED DESCRIPTION

[0036] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Please refer to Figures 1 to 9 :

[0038] Embodiment 1: The present invention proposes a temperature collection device for the back plate of a building photovoltaic module, comprising: a positioning carrier 1, wherein driving screws 101 are rotatably installed inside both sides of the positioning carrier 1; a driving wheel 102 is installed on the driving screw 101, wherein the driving wheel 102 is rotatably installed at the middle position of both sides of the positioning carrier 1; a guide slide 103 is slidably installed inside the positioning carrier 1; the guide slide 103 is a cylindrical structure, and a fixing plate 104 is rotatably installed on the side end of the guide slide 103 and the side end of the driving screw 101; a spring is installed on the inner side end of the fixing plate 104, and the fixing plate 104 is fixed with a spring. 4 is provided with a force-bearing plate 105 on the inner end thereof through a spring; a spring is provided on the inner side of the fixed plate 104, a fixed splint 106 is provided on the inner side of the fixed plate 104 through a spring, and a flip plate 107 is rotatably provided on the inner side of the fixed plate 104; a through-type guide groove 108 is provided at the middle position and both sides of the flip plate 107, and the side end of the flip plate 107 is slidably installed on the inner side of the fixed splint 106; a traction plate 109 is provided on the side end of the force-bearing plate 105; a guide protrusion is provided on the side end of the traction plate 109, and the guide protrusion at the side end of the traction plate 109 is slidably installed inside the guide groove 108.

[0039] In the embodiment of the present invention, when collecting the temperature of the back plate of the building photovoltaic module, the distance between the two fixing plates 104 is adjusted according to the width of the photovoltaic module, and the driving wheel 102 is rotated at the middle position on both sides of the positioning carrier 1 to drive the driving screw 101 to rotate, and the side end of the driving screw 101 drives the fixing plate 104 to move, and at the same time, the fixing plate 104 pulls the guide slide 103 to move, so that the two fixing plates 104 move horizontally relative to each other, so that the inner side of the fixing plate 104 is engaged and installed on both sides of the photovoltaic module, which is suitable for installation on photovoltaic modules of different specifications for use, and then the driving wheel 102 is rotated in the opposite direction to drive the driving screw 101 drives the fixing plate 104 to be fastened to the photovoltaic module. After the force-bearing plate 105 at the inner end of the fixing plate 104 receives pressure, the spring inside the force-bearing plate 105 contracts, and the side end of the force-bearing plate 105 drives the traction plate 109 to move. The guide protrusion at the side end of the traction plate 109 moves inside the guide groove 108 on the flip plate 107, and the traction plate 109 pulls the flip plate 107 to push the fixing clamping plate 106 to move outward, so that the fixing clamping plate 106 is fixed on one side of the installation position of the photovoltaic module, thereby improving the installation stability of the temperature collection device, having a simple structure, convenient operation, and convenient and quick disassembly during later maintenance.

[0040] Embodiment 2, on the basis of embodiment 1, a connecting plate is installed on the side of the positioning carrier 1, and a protective cover 2 is installed on the side of the positioning carrier 1 through the connecting plate; the protective cover 2 is a rectangular frame structure, and three equidistantly distributed temperature detection elements 201 are installed on the inner side of the protective cover 2, and fixed support plates 202 are installed on both ends of the outer side of the protective cover 2; a guide cover 203 is installed in the middle position of the fixed support plate 202; three guide grooves 204 with different directions are opened at the inner end of the guide cover 203, wherein the guide groove 204 is inclined toward the direction of the temperature detection element 201; a rotating rod 205 is rotatably installed in the middle position inside the guide cover 203; the rotating rod 205 is a cylindrical structure, and the rotating rod 203 is a cylindrical structure. 05 is equipped with fan blades on the outside, and the fan blades are inside the air guide cover 203; a transmission rod 206 is rotatably installed on the side of the fixed support plate 202; a fan blade is installed on the outer end of the transmission rod 206, and a pulley is installed on the outer side of the transmission rod 206, and the transmission rod 206 is connected to the outer side of the rotating rod 205 through the pulley; a driving cylinder and a battery are installed on the outer side of the fixed support plate 202, and a limiting plate 207 is installed on the output end of the driving cylinder; the limiting plate 207 is an arc-shaped plate structure, and the limiting plate 207 is slidably installed on the outer side of the transmission rod 206. When the temperature of the back plate of the building photovoltaic module is collected, the side of the positioning carrier plate 1 drives the protective cover 2 installed on the back plate of the photovoltaic module through the connecting plate. The outer side makes the temperature detection element 201 on the inner side of the protective cover 2 fit the back plate of the photovoltaic module, reducing the gap between the temperature detection element 201 and the back plate, reducing the back plate temperature detection error, and at the same time the height of the protective cover 2 is high, reducing the problem of the back plate temperature dropping caused by the airflow, ensuring that the temperature detection element 201 accurately detects the back plate temperature, and ensuring the accuracy of the temperature collection data. When there are water droplets gathered in the protective cover 2, the length of the transmission rod 206 is long, and the airflow passing through the photovoltaic module drives the fan blades at the outer end of the transmission rod 206 to rotate, and the transmission rod 206 drives the rotating rod 205 to rotate through the pulley. The pulley on the transmission rod 206 is larger than the pulley of the rotating rod 205, so that the rotating rod 205 can rotate. As the rotation speed of the rotating rod 205 increases, the airflow generated by the fan blades on the outside of the rotating rod 205 flows inside the air guide cover 203, and the three guide grooves 204 in different directions on the inner end of the air guide cover 203 blow the airflow toward the three temperature detection elements 201, quickly drying the water droplets on the temperature detection elements 201, ensuring the dryness inside the protective cover 2, and reducing the temperature detection error caused by water vapor. When the inside of the protective cover 2 is relatively dry, the output end of the drive cylinder on the outside of the fixed support plate 202 drives the limit plate 207 to squeeze the outside of the transmission rod 206, reducing the rotation of the transmission rod 206, reducing the problem of temperature drop caused by the blowing airflow, and preventing the temperature detection element 201 from being affected by the airflow.

[0041] Example 3, based on Example 1, positioning support plates 3 are installed on the outer sides of both ends of the protective cover 2; a positioning ring 301 is installed on the outer end of the positioning support plate 3; the positioning ring 301 is annular in structure, and a rotating ring 302 is slidably installed on the outer side of the positioning ring 301; a positioning plate 303 is installed on the outer side of the rotating ring 302; an adjusting rod 304 is rotatably installed inside the positioning plate 303; telescopic arm assemblies 305 are installed on both ends of the adjusting rod 304; a guide rod 306 is rotatably installed on the output end of the telescopic arm assembly 305; the guide rod 30 6 is a cylindrical structure, and a reflective frame 307 is installed on the side of the guide rod 306, wherein reflectors are installed on both sides of the reflective frame 307; the rotating ring 302 is an annular structure, and a fixing bolt is rotatably installed on the side of the rotating ring 302, and the inner end of the fixing bolt is installed on the side of the positioning ring 301; the side of the positioning plate 303 is rotatably installed with a fixing bolt, and the inner end of the fixing bolt is installed on the side of the adjusting rod 304. When collecting the temperature of the back plate of the building photovoltaic module, the rotating ring 30 is adjusted according to the inclination angle of the photovoltaic module. 2 drives the positioning ring 301 on the outer end of the positioning support plate 3 to rotate, and the rotating ring 302 drives the positioning plate 303 to rotate to a suitable position. The position of the rotating ring 302 is fixed by the fixing bolts, and the adjusting rod 304 is rotated on the inner side of the positioning plate 303. The two ends of the adjusting rod 304 drive the telescopic arm assembly 305 to a suitable tilt angle, and the position of the adjusting rod 304 is fixed by the fixing bolts. The telescopic arm assembly 305 is telescopically adjusted to drive the reflection frame 307 on the guide rod 306 to a suitable position. The guide rod 306 is rotated to drive the reflection frame 307 to a suitable tilt angle, so that the reflector on the reflection frame 307 reflects light at a certain time in the morning. The sunlight passes through the reflector on the reflection frame 307 to reflect the sunlight, so that the light illuminates the water droplets on the temperature detection element 201. The airflow quickly clears the water droplets, reducing the impact of the water droplets on the temperature detection element 201. As the sun moves, the light deviates and will not continuously illuminate, reducing interference with the time on the temperature detection element 201.

[0042] The working principle of this embodiment is as follows: rotating the driving wheel 102 drives the driving screw 101 to rotate, and the side end of the driving screw 101 drives the fixing plate 104 to move, so that the inner side of the fixing plate 104 is engaged and installed on both sides of the photovoltaic module. Then, rotating the driving wheel 102 in the opposite direction causes the driving screw 101 to drive the fixing plate 104 to be fastened to the photovoltaic module. After the force-bearing plate 105 receives the pressure, the side end of the force-bearing plate 105 drives the traction plate 109 to move, and the guide protrusion at the side end of the traction plate 109 moves in the guide groove 108. The traction plate 109 pulls the flip plate 107 to push the fixing splint 106 to move outward and be fixed to one side of the photovoltaic module, thereby improving the installation stability of the temperature collection device. The side surface of the positioning carrier plate 1 drives the protective cover 2 to be installed on the outer side of the back plate of the photovoltaic module through the connecting plate. The temperature detection element 201 inside the protective cover 2 is in contact with the back plate of the photovoltaic module to detect the back plate temperature. When there are water droplets in the protective cover 2, the rotating ring 302 rotates to the The appropriate position is fixed by fixing the rotating ring 302 by fixing bolts, and the adjusting rod 304 is rotated on the inner side of the positioning plate 303 to drive the telescopic arm assembly 305 to a suitable tilt angle. The telescopic arm assembly 305 is telescopically adjusted to drive the reflection frame 307 on the guide rod 306 to a suitable position, and the reflection frame 307 is at a suitable tilt angle. The reflector on the reflection frame 307 reflects light at a certain time in the morning. The sunlight is reflected by the reflector and illuminates the water droplets on the temperature detection element 201. At the same time, the airflow passing through the photovoltaic component drives the fan blades at the outer end of the transmission rod 206 to rotate. The transmission rod 206 drives the rotating rod 205 to rotate at high speed through the pulley. The airflow generated by the fan blades on the outside of the rotating rod 205 blows the airflow toward the three temperature detection elements 201 through three guide grooves 204 in different directions, and quickly cleans the water droplets on the temperature detection element 201 with the help of light, thereby reducing the problem of temperature detection error caused by water vapor.

[0043] In this article, there are several points to note:

[0044] 1. The drawings of the embodiments of the present invention only relate to the structures related to the embodiments of the present invention. Other structures may refer to conventional designs.

[0045] 2. In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to form new embodiments.

[0046] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A temperature collection device for a building photovoltaic module backplane, comprising: A positioning carrier plate, a connecting plate is installed on the side of the positioning carrier plate, and a protective cover is installed on the side of the positioning carrier plate through the connecting plate; it is characterized in that positioning support plates are installed on the outer sides of both ends of the protective cover; a positioning ring is installed on the outer end of the positioning support plate; a rotating ring is slidably installed on the outer side of the positioning ring; a positioning plate is installed on the outer side of the rotating ring; an adjusting rod is rotatably installed inside the positioning plate; telescopic arm assemblies are installed on both ends of the adjusting rod; a guide rod is rotatably installed on the output end of the telescopic arm assembly; a reflective frame is installed on the side of the guide rod, wherein reflective mirrors are installed on both sides of the reflective frame; Three equally spaced temperature detection elements are installed on the inner side of the protective cover, and fixed support plates are installed on both ends of the outer side of the protective cover; a guide cover is installed in the middle of the fixed support plates; When in use, the reflective frame is adjusted to a suitable tilt angle by rotating the ring, adjusting the rod and adjusting the telescopic arm assembly, so that the reflective mirror on the reflective frame can accurately adjust the angle and position of the reflected light, ensuring that the sunlight can be accurately reflected to the water droplets on the temperature detection element during a specific time period in the morning; The influence of water droplets on the temperature detection of the temperature detection element is reduced.

2. The temperature collection device for the back plate of a building photovoltaic module according to claim 1, characterized in that: Drive screws are rotatably installed inside both sides of the positioning carrier; drive wheels are installed on the drive screws, wherein the drive wheels are rotatably installed in the middle position of both sides of the positioning carrier; a guide slide bar is slidably installed inside the positioning carrier.

3. The temperature collection device for the back plate of a building photovoltaic module according to claim 2, characterized in that: The side ends of the guide slide rod and the driving screw rod are rotatably mounted with a fixing plate; the inner side end of the fixing plate is mounted with a spring, and the inner side end of the fixing plate is mounted with a force-bearing plate through the spring.

4. The temperature collection device for the back plate of a building photovoltaic module according to claim 3, characterized in that: A spring is installed on the inner side of the fixed plate, a fixed clamping plate is installed on the inner side of the fixed plate through the spring, and a flip plate is rotatably installed on the inner side of the fixed plate.

5. The temperature collection device for the back plate of a building photovoltaic module according to claim 4, characterized in that: A through guide groove is provided in the middle position and on both sides of the flip plate, and the side end of the flip plate is slidably installed on the inner side of the fixed splint; a traction plate is installed on the side end of the force-bearing plate; a guide protrusion is installed on the side end of the traction plate, and the guide protrusion at the side end of the traction plate is slidably installed inside the guide groove.

6. The temperature collection device for the back plate of a building photovoltaic module according to claim 1, characterized in that: The inner end of the air guide cover is provided with three guide grooves in different directions, wherein the guide grooves are inclined toward the direction of the temperature detection element; a rotating rod is rotatably installed in the middle position inside the air guide cover; fan blades are installed on the outside of the rotating rod, and the fan blades are inside the air guide cover.

7. The temperature collection device for the back plate of a building photovoltaic module according to claim 6, characterized in that: A transmission rod is rotatably mounted on the side of the fixed support plate; a fan blade is mounted on the outer end of the transmission rod, and a pulley is mounted on the outer side of the transmission rod, and the transmission rod is connected to the outer side of the rotating rod through the pulley.

8. The temperature collection device for the back plate of a building photovoltaic module according to claim 7, characterized in that: A driving cylinder and a storage battery are installed on the outer side of the fixed support plate, and a limiting plate is installed on the output end of the driving cylinder; the limiting plate is slidably installed on the outer side of the transmission rod.

9. The temperature collection device for the back plate of a building photovoltaic module according to claim 8, characterized in that: A fixing bolt is rotatably mounted on the side of the rotating ring, and the inner end of the fixing bolt is mounted on the side of the positioning ring; a fixing bolt is rotatably mounted on the side of the positioning plate, and the inner end of the fixing bolt is mounted on the side of the adjusting rod.

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