A kind of auxiliary snow-prevention equipment for the outer connection of photovoltaic module aluminum frame

Abstract

This invention discloses an auxiliary snow-proofing device for the outer surface of a photovoltaic module's aluminum frame, relating to the field of photovoltaic technology. Specifically, it includes a storage box connected to the high end of the photovoltaic module's aluminum frame and movable components disposed on both sides of the frame. The storage box contains a first conveying roller, a guide roller, a tensioning roller, and a second conveying roller. The first and second conveying rollers are connected via a snow-blocking belt, and the guide roller contacts the bottom of the straight section of the snow-blocking belt. This application provides full coverage of the photovoltaic module with the snow-blocking belt, effectively intercepting snowfall and preventing snow from directly accumulating on the module surface, thus preventing pressure on the module and reduced power generation efficiency. The snow-blocking belt employs a circulating conveying structure, allowing snow to detach and fall to the outer area of ​​the photovoltaic module under gravity and the operation of the conveyor belt, preventing secondary shading or frame deformation caused by snow falling back onto the module surface during snow removal.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic technology, specifically to an auxiliary snow-proof device for the outer aluminum frame of photovoltaic modules. Background Technology

[0002] A photovoltaic (PV) panel is a power generation device that produces direct current (DC) when exposed to sunlight. It consists of thin, solid-state photovoltaic cells made almost entirely of semiconductor materials. Snow accumulation can have a significant impact on PV panels and power plants installed in high-latitude, cold regions. PV panels covered in snow not only experience reduced power generation efficiency but may also suffer from hot spot effects, causing damage.

[0003] To address the adverse effects of snow accumulation on photovoltaic (PV) modules, the industry has developed various snow prevention and removal devices. Among them, roller shutter-type snow barriers, which are directly applied to the PV panel surface as an auxiliary snow protection device, have been proposed and are widely used. However, the snow barrier itself is a flexible structure and lacks load-bearing capacity. When thick snow (especially high-density wet snow) accumulates on the curtain, its entire weight is indirectly applied to the glass surface of the PV module below. Under long-term or extreme snow loads, this indirect pressure may induce micro-cracks in the PV glass, damaging the structural integrity of the module, causing permanent damage, and posing potential safety hazards. During the process of retracting the roller shutter to remove snow, some of the snow attached to the curtain falls off and directly onto the bottom edge of the PV module. This fallen snow forms a new accumulation zone under the module, causing secondary shading and covering the PV panel area that should be protected again, severely impacting power generation efficiency. Meanwhile, excessively thick snow accumulation in certain areas can cause uneven pressure on the component frame, posing a risk of frame deformation; furthermore, during the retraction process, the roller shutter can easily roll in any remaining snow that has not been completely removed. The snow is compacted between the roller and the fabric layer, forming "snow cakes," which causes wrinkles and deformation of the fabric and significantly increases the retraction resistance.

[0004] Based on this, this application proposes an auxiliary snow-proof device for the external connection of aluminum frames of photovoltaic modules. Summary of the Invention

[0005] This invention provides an auxiliary snow protection device for the external connection of aluminum frames of photovoltaic modules, which solves the problems mentioned in the background art, such as the easy jamming of existing roller shutter-type snow barriers when retracted under wet snow conditions, the easy falling of snow causing secondary shading, and the easy pressure of the flexible fabric surface on the module causing microcracks.

[0006] This invention provides the following technical solution: an auxiliary snow-proof device for the outer connection of an aluminum frame of a photovoltaic module, comprising a storage box connected to the high end of the aluminum frame of the photovoltaic module and a movable component disposed on both sides of the aluminum frame of the photovoltaic module. The storage box is provided with a first conveying roller, a guide roller, a tensioning roller and a second conveying roller. The first conveying roller and the second conveying roller are connected by a snow-blocking belt, and the guide roller contacts the bottom of the lower straight section of the snow-blocking belt. The tensioning roller contacts the top of the lower straight section of the snow-blocking belt, and the tensioning roller is connected to the storage box through a linear moving structure. The second conveying roller is connected to the movable component through a connecting block. The movable component drives the second conveying roller to move along the direction of the aluminum frame of the photovoltaic module, so as to realize the flat laying or storage of the snow-blocking belt above the photovoltaic module. When unfolded, the lower end of the snow-blocking belt is located on the outside of the photovoltaic module. Both the first and second conveying rollers are hollow structures with through holes evenly distributed on their bodies. A hollow support roller is movably fitted inside the cavity of the first conveying roller. The hollow support roller is connected to the storage box, and an exhaust groove is provided at the top of the hollow support roller. The snow barrier is provided with heating channels evenly distributed along its length. When the snow barrier is in the unfolded state, the air inlet end of the heating channel is aligned with the exhaust groove. The air outlet end of the heating channel is located at the top of the lower straight section. The main body of the heating channel is located in the middle of the straight section of the snow barrier.

[0007] Preferably, the storage box has a sealing door movably connected to its open end, and a first driving structure is provided on one side of the storage box, through which the sealing door is driven to rotate.

[0008] Preferably, the movable component includes a fixed box connected to the side of the aluminum frame of the photovoltaic module. The inner cavity of the fixed box is provided with a conveyor belt. The inner side of the fixed box is provided with a slot. A connecting block is movably connected to the inner cavity of the slot. One end of the connecting block is connected to the conveyor belt, and the other end of the connecting block is movably connected to a second conveying roller. The connecting block has a hollow structure. The inner cavity of the second conveying roller communicates with the inner cavity of the fixed box through the inner cavity of the connecting block. The end of the fixed box away from the storage box is located on the outer side of the aluminum frame of the photovoltaic module, and an exhaust one-way valve is provided at the bottom of the end of the fixed box away from the storage box.

[0009] Preferably, sealing plates are provided at the top and bottom of the slot, and the connecting block is located between the two sealing plates.

[0010] Preferably, a scraper and a blower are provided on the inner side of the lower end of the fixing box. The scraper is located on the side of the blower away from the photovoltaic module. When the snow barrier is deployed, the scraper is located below the snow barrier and fits against the bottom surface of the snow barrier to scrape and remove snow from the snow barrier. A sealing cover is provided on the inner side of the fixing box. The sealing cover is connected to the fixing box through a lifting structure. A first groove adapted to the scraper and a second groove adapted to the blower are provided at the corresponding positions on the bottom of the sealing cover.

[0011] Preferably, a distance sensor is provided at the bottom of the sealing cover.

[0012] Preferably, the surface of the snow barrier is provided with a hydrophobic coating.

[0013] Preferably, the storage box is equipped with a blower and an air filter. The air inlet of the blower is connected to the air outlet of the air filter. The air outlet of the blower is connected to an air heater. The air outlet of the air heater is connected to a first air outlet pipe and a second air outlet pipe. The air outlet of the first air outlet pipe is connected to the air inlet of the hollow support roller, and the air outlet of the second air outlet pipe is connected to the air inlet of the blower plate.

[0014] Preferably, an electric ball valve is provided at one end of both the first air outlet pipe and the second air outlet pipe.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This auxiliary snow-proofing device, used for the outer aluminum frame of photovoltaic modules, provides full coverage of the photovoltaic modules through snow-blocking belts. It effectively intercepts snowfall, preventing snow from accumulating directly on the photovoltaic module surface and avoiding problems such as pressure on the modules and reduced power generation efficiency. The snow-blocking belts employ a circulating conveyor structure, allowing snow to detach and fall to the outer area of ​​the photovoltaic modules under the influence of gravity and the conveyor belt's operation. This prevents snow from falling back onto the module surface during snow removal, thus avoiding secondary shading or frame deformation due to pressure.

[0016] 2. This auxiliary snow-proofing device for the outer aluminum frame of photovoltaic modules, in conjunction with a heating channel and airflow purging structure, can heat and de-ice the snow-blocking belt, preventing snow from freezing and adhering, significantly improving the snow-clearing effect and equipment reliability. The controller drives the snow-blocking belt to rotate forward and backward and reset through a preset cycle, which can destroy the static pressure ice formation conditions of snow before the snow reaches the clearing threshold, avoiding ice formation and further improving the snow-proofing and ice-proofing effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram illustrating the use of an auxiliary snow-proof device for the external connection of an aluminum frame of a photovoltaic module, as proposed in this invention. Figure 2 The structure of this invention Figure 1 The diagram on the right; Figure 3 This is a schematic diagram of the storage box structure of the present invention; Figure 4 This is a schematic diagram of the interior of the storage box of the present invention; Figure 5 This is a schematic diagram of the first conveying roller of the present invention; Figure 6 The structure of this invention Figure 5 Cross-sectional diagram; Figure 7 This is a schematic diagram of the structural moving component and its connection structure of the present invention; Figure 8 The structure of this invention Figure 7 Enlarged diagram of A in the middle; Figure 9 The structure of this invention Figure 7 Explosion diagram; Figure 10 This is a schematic diagram of the snow barrier strip of the present invention in the laying state.

[0018] In the diagram: 1. Storage box; 2. Sealed door; 3. Fixing box; 4. Sealed cover; 5. Connecting rod; 6. Blower; 7. Air filter; 8. Snow shield; 9. Connecting block; 10. First drive structure; 11. Second conveying roller; 12. First conveying roller; 13. Guide roller; 14. Ball screw; 15. Tensioning roller; 16. Connecting block; 17. Third drive structure; 18. Second drive structure; 19. First air outlet pipe; 20. Exhaust trough; 21. Hollow support roller; 22. Sealing plate; 23. Scraper; 24. Blower plate; 25. Electric telescopic rod; 26. Transmission roller; 27. Conveyor belt; 28. Second drive structure; 29. ​​Air inlet; 30. Air outlet; 31. Second air outlet pipe; 32. Distance sensor. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] This invention provides one embodiment: Please refer to Figures 1-10An auxiliary snow-proof device for the external connection of an aluminum frame of a photovoltaic module includes a storage box 1 connected to the high end of the aluminum frame of the photovoltaic module and movable components disposed on both sides of the aluminum frame of the photovoltaic module. The movable components include a fixed box 3 detachably connected to the side of the aluminum frame of the photovoltaic module. Both ends of the inner cavity of the fixed box 3 are provided with drive rollers 26, which are connected by a conveyor belt 27. The conveyor belt 27 is movably connected to the inner cavity of the fixed box 3. A second drive structure 28 is provided at one end of the inner cavity of the fixed box 3. The output shaft of the second drive structure 28 is connected to one of the drive rollers 26. Under the action of the second drive structure 28, the second drive structure 28 drives the drive roller 26 to rotate, and the drive roller 26 can drive the conveyor belt 27 to rotate. In embodiment 1, the second drive structure 28 is a servo motor. The servo motor is connected to the drive roller 26 through a reducer and a coupling. The model and specifications of the servo motor can be set according to requirements and are not limited here.

[0021] The inner side of the fixing box 3 has a slot, and a connecting block 9 is movably connected to the inner cavity of the slot. One end of the connecting block 9 is connected to the conveyor belt 27, and the connecting block 9 has a hollow structure. Outside air can enter the inner cavity of the fixing box 3 through the inner cavity of the connecting block 9 and the mesh of the conveyor belt 27 aligned with the inner cavity of the connecting block 9. The lower end of the fixing box 3 is located on the outer side of the aluminum frame of the photovoltaic module. An exhaust one-way valve is provided at the bottom of the bottom end of the fixing box 3. The exhaust one-way valve can be used to discharge the gas that has entered the fixing box 3.

[0022] The storage box 1 is equipped with a first conveying roller 12, a guide roller 13, a tensioning roller 15, and a second conveying roller 11. The first conveying roller 12 and the second conveying roller 11 are connected by a snow shield 8. The second conveying roller 11 is connected to the moving component by a connecting block 9. The other end of the connecting block 9 is movably connected to the second conveying roller 11. A second drive structure 18 is provided on one side of the storage box 1. The first conveying roller 12 is connected by the second drive structure 18. In the second embodiment, the second drive structure 18 is a servo motor 2. The output shaft end of the servo motor 2 is connected to the first conveying roller 12 through a reducer and a coupling. The model and specifications of the servo motor 2 can be set according to requirements and are not limited here. When this application is in use, when the second drive structure 18 drives the first conveyor roller 12 connected to it to rotate, the snow barrier 8 can rotate. Under the action of the moving component, the distance between the first conveyor roller 12 and the second conveyor roller 11 can change. Thus, when it is necessary to intercept snow, the moving component drives the second conveyor roller 11 to move along the direction of the aluminum frame of the photovoltaic module, so that the snow barrier 8 is laid flat above the photovoltaic module. When unfolded, the lower end of the snow barrier 8 is located outside the photovoltaic module, and there is a certain gap between the snow barrier 8 and the photovoltaic module. The gap size can be set according to the requirements and is not limited here. When it is necessary to store, the moving component drives the second conveyor roller 11 to move in the opposite direction, and the second conveyor roller 11 can be reset.

[0023] The guide roller 13 contacts the bottom of the lower straight section of the snow barrier 8, and the tension roller 15 contacts the top of the lower straight section of the snow barrier 8. A tension roller 15 is provided between two adjacent guide rollers 13, and the tension roller 15 is connected to the storage box through a linear movement structure. In embodiment 2, the linear movement structure includes a ball screw 14 movably connected to the inner cavity of the storage box 1, a ball nut adapted to the ball screw 14, and a third drive structure 17 that drives the ball screw 14 to rotate. The ball screw and the ball nut form a high-precision ball screw pair. A connecting block 16 is connected to the outer ring of the ball nut. The tension roller 15 is movably connected to the connecting block 16. When the third drive structure 17 drives the ball screw 14 to rotate, The ball nut can drive the connecting block 16 to move in the direction of the ball screw 14. When the connecting block 16 moves, it can change the position of the tension roller 15 and adjust the tension of the snow barrier 8. In use, when the distance between the first conveying roller 12 and the second conveying roller 11 decreases, the tension roller 15 moves away from the first conveying roller 12, so that the tension of the snow barrier 8 remains unchanged. When the distance between the first conveying roller 12 and the second conveying roller 11 increases, the tension roller 15 moves closer to the first conveying roller 12, so that the tension of the snow barrier 8 remains unchanged. The controller of this application adaptively adjusts the displacement of the tension roller 15 according to the change in the distance between the first conveying roller 12 and the second conveying roller 11. In Example 2, the third drive structure 17 is a servo motor 3. The model and specifications can be set according to requirements and are not limited here. The output shaft end of the servo motor 3 is connected to a gear through a reducer and a coupling. Another gear is provided on the outer ring of the ball screw 14. The two gears are in a meshing state. When the servo motor 3 drives the gear connected to it to rotate, the other gear can drive the ball screw 14 to rotate.

[0024] In use, this application utilizes a flat snow-blocking strip 8 to shield the photovoltaic modules, actively intercepting natural snowfall and effectively preventing snow accumulation on the photovoltaic module surface, thus reducing the potential impact of snow cover on module power generation efficiency and structural safety. When snow removal is required, a second drive structure drives the first conveyor roller to rotate, thereby driving the snow-blocking strip to move around its transmission path. During this process, the snow attached to the snow-blocking strip moves to a set position and then separates from the snow-blocking strip under gravity. The snow falls onto the outer area of ​​the photovoltaic module under gravity, ensuring that snow does not fall back onto the photovoltaic module surface during snow removal, achieving targeted snow removal. During storage, under the action of the moving module, the second conveyor roller 11 moves in the opposite direction and gradually resets. During the reset process of the second conveyor roller 11, the controller controls the linear movement structure to move the tension roller 15 away from the first conveyor roller 12, keeping the snow-blocking strip 8 in a preset tension state, facilitating the recycling of the snow-blocking strip 8.

[0025] A sealing door 2 is movably connected to the open end of the storage box 1. A first drive structure 10 is provided on one side of the storage box 1. The sealing door 2 is driven to rotate by the first drive structure 10. Under the action of the first drive structure 10, the sealing door 2 can be opened and closed. When the sealing door 2 is in the open state, the second conveying roller 11 can be moved out through the open end of the storage box 1. When the sealing door 2 is in the closed state, the sealing door 2 seals the open end of the storage box 1, and the storage box 1 is in a sealed state, which facilitates the storage of various structures inside the storage box 1. In embodiment 1, the first drive structure 10 is a servo motor four. The output shaft of the servo motor four is connected to the top of the sealing door 2 through a reducer and a coupling. When the servo motor four is working, it can drive the sealing door 2 to rotate.

[0026] Sealing plates 22 are provided at both the top and bottom of the slot, and the connecting block 9 is located between the two sealing plates 22. The sealing plates 22 can effectively seal the slot without affecting the normal movement of the connecting block 9 within it, thus reducing the impact of the external environment on the internal structure of the fixed box 3.

[0027] The surface of the snow barrier 8 is provided with a hydrophobic coating. The hydrophobic coating can reduce the adhesion of rain and snow, making it easier to clear snow. The material of the hydrophobic coating can be set according to needs and is not limited here.

[0028] Both the first conveying roller 12 and the second conveying roller 11 are hollow structures, and their roller bodies are evenly provided with through holes. The inner cavity of the second conveying roller 11 is in communication with the inner cavity of the connecting block 9. The inner cavity of the second conveying roller 11 is in communication with the inner cavity of the fixed box 3 through the inner cavity of the connecting block 9. The bottom of the fixed box 3 away from the storage box 1 is provided with an exhaust one-way valve. The inner cavity of the first conveying roller 12 is movably fitted with a hollow support roller 21, which is connected to the storage box 1. The top of the hollow support roller 21 is provided with an exhaust groove 20. The snow baffle 8 is provided with heating channels evenly distributed along its length. When the snow baffle 8 is in the unfolded state, the air inlet end 29 of the heating channel is aligned with the exhaust groove 20. The air outlet end 30 of the heating channel is located at the top of the lower end of its straight section. The main body of the heating channel is located in the middle of the straight section of the snow baffle 8.

[0029] The storage box 1 is equipped with a blower 6 and an air filter 7. The air inlet of the blower 6 is connected to the air outlet of the air filter 7, which filters impurities from the air. The air outlet of the blower 6 is connected to an air heater, which heats the air to a preset temperature. The air outlet of the air heater is connected to a first air outlet pipe 19 and a second air outlet pipe 31. The air outlet of the first air outlet pipe 19 is connected to the air inlet of the hollow support roller 21. Both the first air outlet pipe 19 and the second air outlet pipe 31 are equipped with an electric ball valve at one end. The models and specifications of the blower 6, air filter 7, and air heater can be set according to requirements and are not limited here.

[0030] As described above, when this application is in use, the blower 6 blows air heated to a preset temperature into the inner cavity of the hollow support roller 21. When the snow barrier 8 is in the unfolded state, the hot air in the hollow support roller 21 enters the heating channel through the exhaust groove 20, the through hole on the first conveyor roller 12, and the air inlet 29. The air flowing in the heating channel heats the upper straight section of the snow barrier 8, preventing snow from freezing and adhering to the surface of the snow barrier 8, facilitating the smooth removal and cleaning of snow. The air in the heating channel is discharged through the air outlet 30 to the space between the two straight sections of the snow barrier 8. The air between the two straight sections enters the second conveyor roller 11 through the through hole, and finally enters the fixing box 3 through the inner cavity of the connecting block 9, and is discharged through the exhaust one-way valve. Furthermore, when the snow barrier 8 is laid and in a static state, the exhaust groove 20 and the air inlet 29 are aligned.

[0031] In addition, a scraper 23 and a blower 24 are provided on the inner side of the lower end of the fixing box 3. The scraper 23 is located on the side of the blower 24 away from the photovoltaic module. When the snow barrier 8 is unfolded, the scraper 23 is located below the snow barrier 8 and is in contact with the bottom surface of the snow barrier 8. When the snow barrier 8 rotates, the scraper 23 can be used to scrape and remove snow from the snow barrier 8. The air outlet end of the second air outlet pipe 31 is connected to the air inlet end of the blower 24. When the blower 6 is working, air can enter the blower 24. The airflow sprayed from the top of the blower 24 blows onto the snow barrier 8, which can sweep away the ice and snow remaining on the surface of the snow barrier 8 and dry the surface of the snow barrier 8, making it easy to recycle the snow barrier 8.

[0032] A sealing cover 4 is provided on the inner side of the fixed box 3. The sealing cover 4 is connected to the fixed box 3 through a lifting structure. The bottom of the sealing cover 4 is provided with a first groove adapted to the scraper 23 and a second groove adapted to the blower 24. In embodiment 3, the lifting structure includes an electric telescopic rod 25 connected to the fixed box 3. The output shaft end of the electric telescopic rod 25 is connected to a connecting rod 5. The connecting rod 5 is connected to the top of the sealing cover 4. When the electric telescopic rod 25 is working, the sealing cover 4 can be moved through the connecting rod 5. In this application, before the snow barrier 8 is laid, the sealing cover 4 moves to above the laying position of the snow barrier 8 to avoid the sealing cover 4 restricting the laying of the snow barrier 8. When the snow barrier 8 is in the storage state, the sealing cover 4 is reset. The sealing cover 4 is used to protect the scraper 23 and the blower 24, reduce the impact of the external environment on the scraper 23 and the blower 24, and extend the service life of the scraper 23 and the blower 24.

[0033] A distance sensor 32 is installed at the bottom of the sealing cover 4. After the snow barrier 8 is laid, the distance sensor 32 can detect the distance between itself and the snow barrier 8. When snow falls, the distance sensor 32 detects the distance between itself and the snow surface. Based on the data collected by the distance sensor 32, the controller of this application can determine the snow thickness. When the snow thickness reaches a preset value, the controller of this application can control the second drive structure 18 to work, thereby clearing the snow. When the snow thickness does not reach the preset value, every preset cycle, the controller of this application controls the snow barrier 8 to perform forward and reverse rotation actions. The stroke is a preset length, which eventually makes the snow barrier 8 return to the initial position and keep the position unchanged, preventing the snow from forming an ice layer due to long-term static pressure.

[0034] As described above, this application, in conjunction with a heating channel, scraper, and airflow purging structure, can heat and de-ice the snow barrier, preventing snow from freezing and adhering, significantly improving snow removal efficiency and equipment reliability. The overall structure is externally connected to the aluminum frame of the photovoltaic module, requiring no modification to the photovoltaic module itself. It is easy to install, highly adaptable, and effectively solves the technical defects of traditional roller-type snow barriers, such as snow trapping, secondary snow accumulation, and pressure on the photovoltaic panel.

[0035] All electrical components involved in this application are existing technologies. Those skilled in the art can select appropriate models of electrical components according to their needs. No restrictions or elaborations are made here. Those skilled in the art understand their connection methods. With the help of those skilled in the art, all electrical components in this application and their compatible power supplies are connected by wires. According to the actual situation, appropriate controllers are selected to meet control requirements. For specific connections and control sequences, please refer to the description below. The electrical connections between each electrical component are completed in the order of their operation. The detailed connection methods are well-known technologies in the art. The following mainly introduces the working principle and process, and will not describe the electrical control.

[0036] In summary: When this auxiliary snow-proofing device for the external connection of aluminum frames of photovoltaic modules needs to intercept falling snow, the controller of this application controls the first drive structure 10 and the lifting structure to work. The lifting structure drives the sealing cover 4 to move upward until the sealing cover 4 moves above the position where the snow-blocking belt 8 is laid. The first drive structure 10 drives the sealing door 2 to rotate until the sealing door 2 is in the open state. The controller controls the second drive structure 28 to rotate. Under the action of the second drive structure 28, the conveyor belt 27 rotates. When the conveyor belt 27 rotates, it drives the second conveyor roller 11 to move through the connecting block 9. The distance between the first conveyor roller 12 and the second conveyor roller 11 increases. During the movement of the second conveyor roller 11, the controller uses the linear movement structure to change the position of the tension roller 15 so that the snow-blocking belt 8 is kept at the preset tension until the second conveyor roller 11 moves to the preset position. The snow-blocking belt 8 is laid. At this time, the snow-blocking belt 8 covers the top of the photovoltaic module, and the falling snow is intercepted by the snow-blocking belt 8, achieving the purpose of snow prevention. The air inlet 29 and the exhaust chute 20 are aligned.

[0037] During use, the controller collects data from the ranging sensor 32 to determine the snow thickness. When the snow thickness reaches a preset value, the controller activates the second drive structure 18, driving the snow-blocking belt 8 to move along its transmission path. The snow adhering to the snow-blocking belt moves to a set position and then separates from the belt under gravity. The snow falls onto the outer area of ​​the photovoltaic module under gravity, ensuring that the snow does not fall back onto the photovoltaic module surface during snow removal, thus achieving targeted snow removal. Furthermore, the scraper 23 can scrape off the snow adhering to the snow-blocking belt 8, and the airflow from the top of the blower 24 can blow away any remaining ice and snow on the surface of the snow-blocking belt 8.

[0038] When the snow barrier 8 needs to be stored, the snow barrier 8 rotates for a preset cycle. During this process, the airflow sprayed by the blower plate 24 can dry the snow barrier 8. After the snow barrier 8 is dried, the conveyor belt 27 drives the second conveyor roller 11 to move in the opposite direction through the connecting block 9 until the second conveyor roller 11 is reset. During the reverse movement of the second conveyor roller 11, the position of the tension roller 15 is changed so that the snow barrier 8 is kept at the preset tension. After the second conveyor roller 11 is reset, the sealing door 2 is closed.

[0039] All standard parts used in this invention can be purchased from the market, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods of each structure adopt conventional techniques such as bolt connection, which are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The materials and specifications of each component can be selected according to requirements and are not limited here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An auxiliary snow-proof device for the outer connection of an aluminum frame of a photovoltaic module, comprising a storage box (1) connected to the high end of the aluminum frame of the photovoltaic module and movable components disposed on both sides of the aluminum frame of the photovoltaic module, characterized in that: The storage box (1) is provided with a first conveying roller (12), a guide roller (13), a tensioning roller (15), and a second conveying roller (11). The first conveying roller (12) and the second conveying roller (11) are connected by a snow barrier (8). The guide roller (13) contacts the bottom of the lower straight section of the snow barrier (8), and the tensioning roller (15) contacts the top of the lower straight section of the snow barrier (8). The tensioning roller (15) is connected to the storage box through a linear movement structure. The second conveying roller (11) is connected to a moving component through a connecting block (9). The moving component drives the second conveying roller (11) to move along the direction of the aluminum frame of the photovoltaic module, so as to realize the flat laying or storage of the snow barrier (8) above the photovoltaic module. When unfolded, the lower end of the snow barrier (8) is located on the outside of the photovoltaic module. Both the first conveying roller (12) and the second conveying roller (11) are hollow structures, and through holes are evenly arranged on their roller bodies. The hollow support roller (21) is movably sleeved in the inner cavity of the first conveying roller (12). The hollow support roller (21) is connected to the storage box (1). The top of the hollow support roller (21) is provided with an exhaust groove (20). The snow shield (8) is provided with heating channels evenly distributed along its length direction. When the snow shield (8) is in the unfolded state, the air inlet (29) of the heating channel is aligned with the exhaust groove (20). The air outlet (30) of the heating channel is located at the top of the lower straight section. The main body of the heating channel is located in the middle of the straight section of the snow shield (8).

2. The auxiliary snow-proofing device for the outer aluminum frame of a photovoltaic module according to claim 1, characterized in that: The storage box (1) has a sealing door (2) movably connected to its open end. A first driving structure (10) is provided on one side of the storage box (1), and the sealing door (2) is driven to rotate by the first driving structure (10).

3. The auxiliary snow-proofing device for the outer aluminum frame of a photovoltaic module according to claim 1, characterized in that: The movable component includes a fixed box (3) connected to the side of the aluminum frame of the photovoltaic module. The inner cavity of the fixed box (3) is provided with a conveyor belt (27). The inner side of the fixed box (3) is provided with a slot. The inner cavity of the slot is movably connected with a connecting block (9). One end of the connecting block (9) is connected to the conveyor belt (27), and the other end of the connecting block (9) is movably connected to a second conveyor roller (11). The connecting block (9) is a hollow structure. The inner cavity of the second conveyor roller (11) is connected to the inner cavity of the fixed box (3) through the inner cavity of the connecting block (9). The end of the fixed box (3) away from the storage box (1) is located on the outer side of the aluminum frame of the photovoltaic module. The bottom of the fixed box (3) away from the storage box (1) is provided with an exhaust one-way valve.

4. The auxiliary snow-proofing device for the outer aluminum frame of a photovoltaic module according to claim 3, characterized in that: The top and bottom of the slot are provided with sealing plates (22), and the connecting block (9) is located between the two sealing plates (22).

5. An auxiliary snow-proofing device for the outer surface of an aluminum frame of a photovoltaic module according to claim 3, characterized in that: The inner side of the lower end of the fixed box (3) is provided with a scraper (23) and a blower (24). The scraper (23) is located on the side of the blower (24) away from the photovoltaic module. When the snow barrier (8) is unfolded, the scraper (23) is located below the snow barrier (8) and is in contact with the bottom surface of the snow barrier (8) to achieve snow removal of the snow barrier (8). The inner side of the fixed box (3) is provided with a sealing cover (4). The sealing cover (4) is connected to the fixed box (3) through a lifting structure. The bottom of the sealing cover (4) is provided with a first groove that matches the scraper (23) and a second groove that matches the blower (24).

6. The auxiliary snow-proofing device for the outer aluminum frame of a photovoltaic module according to claim 5, characterized in that: A distance sensor (32) is provided at the bottom of the sealing cover (4).

7. The auxiliary snow-proofing device for the outer aluminum frame of a photovoltaic module according to claim 1, characterized in that: The surface of the snow barrier (8) is provided with a hydrophobic coating.

8. An auxiliary snow-proofing device for the outer aluminum frame of a photovoltaic module according to claim 5, characterized in that: The storage box (1) is equipped with a blower (6) and an air filter (7). The air inlet of the blower (6) is connected to the air outlet of the air filter (7). The air outlet of the blower (6) is connected to an air heater. The air outlet of the air heater is connected to a first air outlet pipe (19) and a second air outlet pipe (31). The air outlet of the first air outlet pipe (19) is connected to the air inlet of the hollow support roller (21). The air outlet of the second air outlet pipe (31) is connected to the air inlet of the blower plate (24).

9. An auxiliary snow-proofing device for the outer surface of an aluminum frame of a photovoltaic module according to claim 8, characterized in that: Both the first air outlet pipe (19) and the second air outlet pipe (31) are equipped with an electric ball valve at one end.

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