Intelligent foldable photovoltaic support

Abstract

The invention belongs to the technical field of photovoltaic supports, and particularly relates to an intelligent foldable photovoltaic support which comprises a hollow base, a supporting cylinder is fixedly embedded in the top end of the hollow base, a connecting ring is fixedly embedded in the top end of the supporting cylinder, the inner wall of the connecting ring is slidably sleeved with a supporting pipe, and the bottom end of the supporting pipe is fixedly sleeved with a sealing ring. The outer wall of the sealing ring is in sealing sliding connection with the inner wall of the supporting cylinder, and two symmetrically-distributed screw holes are formed in the outer wall of the connecting ring. The photovoltaic support has the functions of folding, tracking the direction of the sun, repelling birds, cooling and preventing dust, the light receiving posture of the photovoltaic power generation panel can be dynamically adjusted, the use intelligence of the photovoltaic support is improved, the protection capacity of the photovoltaic support can be improved, the power generation efficiency of the photovoltaic power generation panel is effectively improved, and the photovoltaic support is suitable for popularization and application. And meanwhile, the use flexibility and the power generation stability of the photovoltaic bracket in a field environment without a power grid are further enhanced, and the cleaning and maintenance frequency of the surface of the photovoltaic power generation panel is also reduced.

Description

Technical Field

[0001] This invention belongs to the field of photovoltaic support technology, and in particular relates to an intelligent foldable photovoltaic support. Background Technology

[0002] Photovoltaic power generation refers to a clean power generation method that directly converts solar energy into electrical energy using the photovoltaic effect of photovoltaic panels. It has core advantages such as zero carbon emissions, no fuel required, and suitability for off-grid scenarios. It is an ideal power supply solution for environments without a power grid in the wild. In activities such as field surveys, wilderness exploration, and outdoor camping, electrical equipment such as communication terminals, lighting equipment, portable energy storage power supplies, and small testing instruments all require stable power support. However, traditional grid power coverage is insufficient, and fuel generators are noisy, inconvenient to carry, and pose pollution risks. Therefore, photovoltaic power generation has become the first choice. To meet the mobility and portability requirements of outdoor scenarios, existing photovoltaic panels are generally used with foldable photovoltaic brackets. These brackets can be quickly folded and stored through a hinged structure, greatly reducing their size and weight, making them easy to transport by vehicle or on a backpack. When unfolded, they can be quickly locked in shape to ensure that the photovoltaic panels are at the optimal angle of sunlight. For example, patent CN207475451U discloses a foldable photovoltaic bracket.

[0003] Currently, foldable photovoltaic support structures are relatively simple, and the following problems exist during use:

[0004] First, foldable photovoltaic brackets are less resistant to outdoor environments. Outdoor environments contain high levels of dust and other impurities. As the usage time increases, these impurities will continue to adhere to the surface of the photovoltaic panels. This will not only block the irradiation and absorption of sunlight, significantly reducing the photoelectric conversion efficiency, but also increase the frequency of cleaning and maintenance of the photovoltaic panel surface due to dust accumulation, thus affecting the power generation efficiency of the photovoltaic panels and the reliability of the foldable photovoltaic brackets.

[0005] Secondly, when using traditional foldable photovoltaic brackets, the angle at which the photovoltaic panels receive sunlight is mostly fixed, making it impossible to track the dynamic changes in the sun's position and maintain the optimal posture for receiving sunlight. This results in a significant loss in the power generation efficiency of the photovoltaic panels and further restricts the flexibility and power generation stability of foldable photovoltaic brackets in scenarios such as field surveys and explorations.

[0006] To address these issues, we propose an intelligent foldable photovoltaic bracket. Summary of the Invention

[0007] The purpose of this invention is to address the above-mentioned problems by providing an intelligent foldable photovoltaic bracket.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: an intelligent foldable photovoltaic bracket, comprising a hollow base, a support cylinder fixedly embedded at the top of the hollow base, a connecting ring fixedly embedded at the top of the support cylinder, a support tube slidably sleeved on the inner wall of the connecting ring, a sealing ring fixedly sleeved at the bottom end of the support tube, the outer wall of the sealing ring being slidably and sealingly connected to the inner wall of the support cylinder, and two symmetrically distributed screw holes being opened on the outer wall of the connecting ring, with positioning bolts fixedly threaded to the hole walls of the screw holes;

[0009] A hollow block is fixedly connected to the top of the support tube. A sealed bearing is fixedly embedded in the top of the hollow block. A support rod is fixedly connected to the inner wall of the sealed bearing. A connecting mesh plate is fixedly connected to the inner wall of the hollow block. A servo motor is fixedly connected to the lower surface of the connecting mesh plate. The output end of the servo motor passes through the upper surface of the connecting mesh plate and is fixedly connected to the bottom end of the support rod. A connecting thread is opened at the top of the support rod. A photovoltaic panel fixing mechanism is threaded onto the top of the support rod.

[0010] A protective mechanism is fixedly connected to the side end of the photovoltaic panel fixing mechanism;

[0011] A filter metal plate is fixedly connected to the inner wall of the hollow base. A PLC controller and a fan are fixedly connected to the upper surface of the filter metal plate. The air outlet of the fan passes through the bottom end of the support cylinder and communicates with the internal cavity of the support cylinder.

[0012] The hollow base has air intake and positioning mechanisms fixedly connected to both outer walls.

[0013] In the aforementioned intelligent foldable photovoltaic bracket, the photovoltaic panel fixing mechanism includes a threaded cylinder threadedly connected to the top of a support rod. A top plate is obliquely fixedly connected to the top of the threaded cylinder. Circular holes are opened at the four corners of the top plate, and screws are movably connected to the walls of the circular holes. Washers are movably fitted onto the walls of the screws. A pressure plate is fixedly connected to the top of the screws. A limit nut is threadedly fitted onto the bottom wall of the screws. A through hole is opened on the outer surface of the top plate, and a temperature sensor is fixedly connected to the wall of the through hole. A protective cover is fixedly fitted onto the outer wall of the temperature sensor.

[0014] In the aforementioned intelligent foldable photovoltaic bracket, the protective mechanism includes a hollow box fixedly connected to the side wall of the top plate. The outer wall of the hollow box is inclinedly and fixedly connected to a first exhaust nozzle and a second exhaust nozzle. A fixing hole is opened at the center of the upper surface of the hollow box, and a connecting bearing is fixedly connected to the wall of the fixing hole. An L-shaped rotating rod is fixedly connected to the inner wall of the connecting bearing. Two bird-repelling ribbons are fixedly connected to the top side of the L-shaped rotating rod. A fan blade is fixedly sleeved at the bottom end of the L-shaped rotating rod. An air pipe is fixedly embedded on the lower surface of the hollow box at the fan blade. The air inlet end of the air pipe is fixedly connected to the top outer wall of the hollow block. An installation hole is opened at the top of the hollow box, and a dust concentration sensor is fixedly connected to the wall of the installation hole.

[0015] In the aforementioned intelligent foldable photovoltaic bracket, the air intake and positioning mechanism includes a U-shaped plate fixedly connected to the side wall of the hollow base. Support bearings are fixedly embedded in the outer walls of the two vertical sections of the U-shaped plate. Rotating blocks are fixedly connected to the inner walls of the support bearings. An air intake metal cylinder is fixedly connected to the outer walls of the two rotating blocks. A corrugated pipe is fixedly connected to the outer wall of one end of the air intake metal cylinder. The outlet end of the corrugated pipe is fixedly connected to the bottom outer wall of the hollow base. A pad is fixedly connected to the lower outer wall of the other end of the air intake metal cylinder. A rectangular air intake hole is opened on the upper outer wall of the side end of the air intake metal cylinder, and a filter screen is fixedly connected to the wall of the rectangular air intake hole. A filter frame is fixedly connected to the upper outer wall of the side end of the air intake metal cylinder, and an arc-shaped cover plate is fixedly connected to the outer wall of the filter frame.

[0016] In the aforementioned intelligent foldable photovoltaic bracket, two arc-shaped limiting plates are movably connected to the outer wall of the air intake metal cylinder, and pointed insert rods are fixedly connected to the lower surfaces of both sides of the arc-shaped limiting plates.

[0017] In the aforementioned intelligent foldable photovoltaic bracket, hanging rings are fixedly connected to the upper surfaces of the two arc-shaped cover plates, and two elastic rubber blocks are fixedly connected to the outer wall of the support cylinder. Hooks that cooperate with the hanging rings are fixedly connected to the outer walls of the elastic rubber blocks.

[0018] In the aforementioned intelligent foldable photovoltaic bracket, the upper surface of the filter metal plate is provided with multiple through holes, and rubber protrusions are movably embedded in the hole walls. The outer walls of the multiple rubber protrusions are jointly fixedly connected to a filter sponge pad, and the side wall of the filter sponge pad is in close contact with the inner wall of the hollow base.

[0019] In the aforementioned intelligent foldable photovoltaic bracket, the lower surface of the hollow base is provided with a threaded countersunk hole, and the hole wall of the threaded countersunk hole is sealed with a bottom cover.

[0020] Compared with existing technologies, the advantages of a smart, foldable photovoltaic mounting system are:

[0021] 1. Using a set of support cylinders, support pipes, photovoltaic panel fixing mechanisms, and servo motors, when photovoltaic panels need to provide power to electrical equipment in an off-grid environment, workers first move the folded photovoltaic support frame to a sunny location. Then, the unfolded photovoltaic support frame is securely placed, and the photovoltaic panels are fixed using the photovoltaic panel fixing mechanism. Workers then check the current time or sun position and adjust the angle of the top panel so that the photovoltaic panels are directly facing the sun, ensuring optimal sunlight exposure for photovoltaic power generation. Simultaneously, the PLC controller is connected to the photovoltaic power generation system, which then supplies power to the electrical components within the photovoltaic support frame. After power supply is complete, the PLC controller controls the servo motor every hour. The drive end of the servo motor rotates 15°, and the drive end of the servo motor drives the photovoltaic panel to rotate synchronously by 15°, thereby realizing the intelligent light-tracking function of the photovoltaic panel. If the staff spends the night in an environment without power grid in the field, the PLC controller keeps the setting of rotating the drive end of the servo motor by 15° every hour unchanged. In this way, the photovoltaic panel on the top plate will be accurately aligned with the east to greet the rising sun the next morning. The above structural design not only makes the photovoltaic bracket foldable and easy to transport, but also has the core advantage of intelligently tracking the sun's position. It can dynamically adjust the light-receiving posture of the photovoltaic panel, effectively improving the power generation efficiency of the photovoltaic panel. At the same time, it further enhances the flexibility of the photovoltaic bracket in the field without power grid and the stability of power generation.

[0022] 2. Through the protective mechanism and fan, the PLC controller also controls the fan to operate normally at the lowest power level. The fan draws air from inside the hollow base, creating a negative pressure environment inside the hollow base. Then, the hollow base under negative pressure draws in outside air through the air intake and positioning mechanism to maintain air pressure balance. Afterward, the air delivered by the fan is injected into the hollow box and blows the fan blades to rotate. The fan blades drive the bird-repelling ribbon to rotate synchronously through the L-shaped rotating rod. The bird-repelling ribbon generates a continuous dynamic visual impact during rotation. Combined with the local airflow disturbance caused by the rotation of the L-shaped rotating rod, the bird-repelling purpose is achieved under the dual stimulation, effectively preventing bird droppings from obstructing the power generation efficiency of the photovoltaic panel. This structure enables the photovoltaic bracket to have a reliable bird-repelling function, which not only ensures the power generation efficiency of the photovoltaic panel, but also reduces the frequency of cleaning and maintenance of the photovoltaic panel surface.

[0023] 3. Through the installation of temperature sensors, air intake and positioning mechanisms, and fans, the photovoltaic support system monitors the surface temperature of the photovoltaic panels in real time during operation. The temperature sensor converts the temperature value into an electrical signal and sends it to the PLC controller. If the temperature value detected by the temperature sensor exceeds the preset temperature warning threshold of the PLC controller, the PLC controller controls the fan to increase its operating power. The more the temperature at the photovoltaic panel exceeds the preset warning threshold, the greater the suction power of the fan controlled by the PLC controller. The two are directly proportional until the fan reaches its maximum suction power. The air blown by the fan is sprayed above and below the photovoltaic panels through the first and second exhaust nozzles, significantly increasing the airflow speed around the photovoltaic panels. Since the air drawn in by the fan comes from the intake metal cylinder (which has a temperature difference of 8℃-12℃ with the photovoltaic panels), it can quickly reduce the surface temperature of the photovoltaic panels. This structural design enables the photovoltaic support system to have a highly efficient cooling function, which not only improves the power generation effect of the photovoltaic panels but also enhances the reliability of the photovoltaic support system.

[0024] 4. Through the installation of a fan, dust concentration sensor, and filter sponge pad, the dust concentration sensor continuously monitors the dust levels around the photovoltaic panels during operation. It converts the dust concentration value into an electrical signal and sends it to the PLC controller. If the dust concentration detected by the sensor exceeds the preset dust concentration warning threshold of the PLC controller, the PLC controller will control the fan to increase its operating power. The higher the dust concentration around the photovoltaic panels exceeds the preset warning threshold, the greater the suction power of the fan controlled by the PLC controller; the two are directly proportional, until the fan reaches its maximum operating power. With maximum suction power, the outside air is purified multiple times by the filter frame, filter plate, and filter sponge pad. The clean air is then sprayed onto the top and bottom of the photovoltaic panel through the first and second exhaust nozzles. The high-speed clean airflow forms a barrier air film layer on the surface of the photovoltaic panel, preventing dust from accumulating on the panel surface and achieving contactless self-cleaning. This ensures the transmittance of sunlight. This structural design gives the photovoltaic support a highly efficient dustproof function, reducing the frequency of cleaning and maintenance of the photovoltaic panel surface and improving the power generation effect of the photovoltaic panel and the reliability of the photovoltaic support. Attached Figure Description

[0025] Figure 1 This is a structural schematic diagram of an intelligent foldable photovoltaic bracket provided by the present invention;

[0026] Figure 2 This is a partial cross-sectional structural schematic diagram of an intelligent foldable photovoltaic bracket provided by the present invention;

[0027] Figure 3 This is an enlarged structural schematic diagram of the protective mechanism in an intelligent foldable photovoltaic support provided by the present invention;

[0028] Figure 4 This is a cross-sectional structural schematic diagram of the hollow block portion in an intelligent foldable photovoltaic support provided by the present invention;

[0029] Figure 5 This is a schematic diagram of the connecting ring portion in an intelligent foldable photovoltaic bracket provided by the present invention;

[0030] Figure 6 This is a cross-sectional structural schematic diagram of the hollow base in an intelligent foldable photovoltaic bracket provided by the present invention;

[0031] Figure 7 This is a partially enlarged structural diagram of the air intake and positioning mechanism in an intelligent foldable photovoltaic bracket provided by the present invention.

[0032] In the diagram: 1 Hollow base, 2 Support cylinder, 3 Connecting ring, 4 Support pipe, 5 Sealing ring, 6 Positioning bolt, 7 Photovoltaic panel fixing mechanism, 71 Threaded cylinder, 72 Top plate, 73 Screw, 74 Washer ring, 75 Pressure plate, 76 Limit nut, 77 Temperature sensor, 78 Protective cover, 8 Protective mechanism, 81 Hollow box, 82 First exhaust nozzle, 83 Second exhaust nozzle, 84 Connecting bearing, 85 L-shaped rotating rod, 86 Bird deterrent ribbon, 87 Fan blade, 88 Air pipe, 89 Dust concentration sensor, 9 Air intake and positioning machine. Components: 91 U-shaped plate, 92 support bearing, 93 rotating block, 94 air intake metal cylinder, 95 bellows, 96 pad block, 97 filter screen plate, 98 filter screen frame, 99 arc-shaped cover plate, 10 hollow block, 11 sealed bearing, 12 support rod, 13 connecting mesh plate, 14 servo motor, 15 filter metal plate, 16 PLC controller, 17 fan, 18 arc-shaped limit plate, 19 pointed insertion rod, 20 hanging ring, 21 elastic rubber block, 22 hook, 23 rubber protrusion, 24 filter sponge pad, 25 bottom cover. Detailed Implementation

[0033] 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.

[0034] like Figures 1-7As shown, an intelligent foldable photovoltaic bracket includes a hollow base 1. A support cylinder 2 is fixedly embedded at the top of the hollow base 1. A connecting ring 3 is fixedly embedded at the top of the support cylinder 2. A support tube 4 is slidably sleeved on the inner wall of the connecting ring 3. A sealing ring 5 is fixedly sleeved at the bottom end of the support tube 4. The outer wall of the sealing ring 5 is slidably sealed to the inner wall of the support cylinder 2. Two symmetrically distributed screw holes are opened on the outer wall of the connecting ring 3, and positioning bolts 6 are fixedly threaded to the hole walls. A hollow block 10 is fixedly connected to the top of the support tube 4. A sealing bearing 11 is fixedly embedded at the top of the hollow block 10. A support rod 12 is fixedly connected to the inner wall of the sealing bearing 11. A connecting mesh plate 13 is fixedly connected to the inner wall of the hollow block 10. A servo motor 14 is fixedly connected to the lower surface of the connecting mesh plate 13. The output end of 4 passes through the upper surface of the connecting mesh plate 13 and is fixedly connected to the bottom end of the support rod 12. The top end of the support rod 12 is provided with a connecting thread, and the top end of the support rod 12 is threadedly fitted with a photovoltaic panel fixing mechanism 7. The photovoltaic panel fixing mechanism 7 includes a threaded cylinder 71 that is threadedly fitted to the top end of the support rod 12. The top end of the threaded cylinder 71 is inclinedly fixedly connected to a top plate 72. The top plate 72 has round holes at each of its four corners, and the hole walls of the round holes are movably connected to screws 73. The rod walls of the screws 73 are movably fitted with washers 74. The top end of the screws 73 is fixedly connected to a pressure plate 75. The bottom end of the screws 73 is threadedly fitted with a limit nut 76. The outer surface of the top plate 72 has a through hole, and the hole walls of the through hole are fixedly connected to a temperature sensor 77. The outer wall of the temperature sensor 77 is fixedly fitted with a protective cover 78.

[0035] A protective mechanism 8 is fixedly connected to the side end of the photovoltaic panel fixing mechanism 7. The protective mechanism 8 includes a hollow box 81 fixedly connected to the side wall of the top plate 72. The outer wall of the hollow box 81 is inclined and fixedly connected to a first exhaust nozzle 82 and a second exhaust nozzle 83. A fixing hole is opened at the center of the upper surface of the hollow box 81, and a connecting bearing 84 is fixedly connected to the wall of the fixing hole. An L-shaped rotating rod 85 is fixedly connected to the inner wall of the connecting bearing 84. Two bird-repelling ribbons 86 are fixedly connected to the top side end of the L-shaped rotating rod 85. A fan blade 87 is fixedly sleeved at the bottom end of the L-shaped rotating rod 85. An air pipe 88 is fixedly embedded on the lower surface of the hollow box 81 at the fan blade 87. The air inlet end of the air pipe 88 is fixedly connected to the top outer wall of the hollow block 10. An installation hole is opened at the top of the hollow box 81, and a dust concentration sensor 89 is fixedly connected to the wall of the installation hole.

[0036] A filter metal plate 15 is fixedly connected to the inner wall of the hollow base 1. A PLC controller 16 and a fan 17 are fixedly connected to the upper surface of the filter metal plate 15. The air outlet of the fan 17 passes through the bottom end of the support cylinder 2 and communicates with the internal cavity of the support cylinder 2. An air inlet and positioning mechanism 9 is fixedly connected to both outer walls of the hollow base 1. The air inlet and positioning mechanism 9 includes a U-shaped plate 91 fixedly connected to the side wall of the hollow base 1. Support bearings 92 are fixedly embedded in the outer walls of the two vertical parts of the U-shaped plate 91. A rotating block 93 is fixedly connected to the inner wall of the support bearing 92. An air inlet metal cylinder 94 is fixedly connected to the outer wall of the rotating block 93. A bellows 95 is fixedly connected to the outer wall of one end of the air inlet metal cylinder 94. The air outlet of the bellows 95 is fixedly connected to the bottom outer wall of the hollow base 1. A pad block 96 is fixedly connected to the lower outer wall of the other end of the air inlet metal cylinder 94. A rectangular air inlet hole is opened on the upper outer wall of the side end of the air inlet metal cylinder 94. A filter screen plate 97 is fixedly connected to the wall of the rectangular air inlet hole. A filter screen frame 98 is fixedly connected to the upper outer wall of the side end of the air inlet metal cylinder 94. An arc-shaped cover plate 99 is fixedly connected to the outer wall of the filter screen frame 98.

[0037] Two arc-shaped limiting plates 18 are movably connected to the outer wall of the air intake metal cylinder 94. Pointed rods 19 are fixedly connected to the lower surface of both sides of the arc-shaped limiting plates 18. Hanging rings 20 are fixedly connected to the upper surface of the two arc-shaped cover plates 99. Two elastic rubber blocks 21 are fixedly connected to the outer wall of the support cylinder 2. Hooks 22 that cooperate with hanging rings 20 are fixedly connected to the outer wall of the elastic rubber blocks 21.

[0038] The upper surface of the filter metal plate 15 has multiple through holes, and the walls of the through holes are movably fitted with rubber protrusions 23. The outer walls of the multiple rubber protrusions 23 are fixedly connected to the filter sponge pad 24, and the side wall of the filter sponge pad 24 is in close contact with the inner wall of the hollow base 1. The lower surface of the hollow base 1 has a threaded countersunk hole, and the wall of the threaded countersunk hole is sealed with a bottom cover 25.

[0039] Temperature sensor 77 and dust concentration sensor 89 are electrically connected to the input terminal of PLC controller 16 via wires, and servo motor 14 and fan 17 are electrically connected to the output terminal of PLC controller 16 via wires. The above-mentioned power supply equipment and electrical connections are all existing technologies and will not be described in detail here.

[0040] The operating principle of this invention is described as follows: When the photovoltaic power generation panel needs to provide power to electrical equipment in an off-grid environment, the staff first moves the folded photovoltaic bracket to a sunny power generation location, then places the hollow base 1 horizontally on the ground, and separates the hook 22 from the hanging ring 20, unwinding the air intake and positioning mechanism 9 in the folded state. At this time, the air intake metal cylinder 94 deflects on the U-shaped plate 91 through the rotating block 93 and the support bearing 92, making the air intake metal cylinder 94 horizontal. Then, the arc-shaped limiting plate 18 is clamped on the outside of the air intake metal cylinder 94, and the pointed end... Insert rod 19 is inserted deep into the ground in the wild. The air intake metal cylinder 94 is fixed by the limiting action of arc-shaped limiting plate 18, thereby stabilizing the hollow base 1. At the same time, pad block 96 contacts the ground in the wild. The pad block 96 raises the air intake metal cylinder 94 to prevent the filter screen plate 97 from being submerged by the surface water in the wild and affecting the air intake efficiency. Since the ground in the wild is covered with dense herbaceous vegetation, the air intake metal cylinder 94 placed on the ground is not exposed to direct sunlight. Its own temperature and the temperature of the surrounding environment will not be too high. A large temperature difference (such as 8℃-12℃) is formed with the surface of the photovoltaic power generation panel that is exposed to direct sunlight, which provides favorable conditions for the subsequent cooling function.

[0041] Next, the workers threaded the screw cylinder 71 to the top of the support rod 12, making the top plate 72 tilted at an optimal angle for receiving sunlight. Then, the photovoltaic panel was placed on the top plate 72, ensuring it was flush against the upper surfaces of the four washers 74. Next, the limiting nut 76 was rotated, and the limiting nut 76, through the screw 73, caused the pressure plate 75 to press against the photovoltaic panel, thus fixing it in place. At this point, the photovoltaic panel was positioned precisely between the first exhaust nozzle 82 and the second exhaust nozzle 83. The next step was to pull the support tube 4 out of the support cylinder 2. The sealing ring 5 at the bottom of the support tube 4 slid to the top of the support cylinder 2, thereby raising the height of the top plate 72 and preventing unevenness on the ground. The vegetation shades the photovoltaic panels to ensure their power generation efficiency. Next, the staff checks the current time or the sun's position (e.g., at noon when the sun is due south). Then, they rotate the support pipe 4 and adjust the angle of the top plate 72 through the support pipe 4, hollow block 10, support rod 12, and threaded cylinder 71, so that the photovoltaic panels at the top plate 72 are directly facing the sun (e.g., due south), ensuring that the photovoltaic panels generate electricity at the optimal angle of sunlight. Finally, they rotate the positioning bolt 6, which presses the support pipe 4 to stabilize its state. At the same time, the PLC controller 16 is connected to the photovoltaic power generation system, which supplies power to the electrical components inside the photovoltaic bracket.

[0042] After power is supplied, the PLC controller 16 controls the drive end of the servo motor 14 to rotate 15° every hour (the rotation angle can be preset according to the specific season). The drive end of the servo motor 14 drives the photovoltaic panel to rotate synchronously by 15° through the support rod 12, the threaded cylinder 71 and the top plate 72, thereby realizing the intelligent light-tracking function of the photovoltaic panel. If the staff spends the night in an environment without power grid in the wild, the setting of the PLC controller 16 controlling the drive end of the servo motor 14 to rotate 15° every hour remains unchanged. In this way, the photovoltaic panel at the top plate 72 will be accurately aligned with the east to greet the rising sun the next morning, thus ensuring that the photovoltaic panel is always in a state of high-efficiency solar energy conversion. The above structural design not only makes the photovoltaic bracket have a folding and storage function, which is convenient for transportation and carrying, but also has the core advantage of intelligently tracking the sun's position. It can dynamically adjust the light-receiving posture of the photovoltaic panel, effectively improve the power generation efficiency of the photovoltaic panel, and further enhance the flexibility and power generation stability of the photovoltaic bracket in an environment without power grid in the wild.

[0043] Meanwhile, the PLC controller 16 also controls the fan 17 to operate normally at the lowest power level. The fan 17 draws air from inside the hollow base 1, creating a negative pressure environment inside the hollow base 1. Then, the hollow base 1 under negative pressure draws in outside air through the air intake and positioning mechanism 9 to maintain air pressure balance. Afterward, the air delivered by the fan 17 is injected into the hollow box 81 through the support cylinder 2, support pipe 4, and air pipe 88, and blows the fan blade 87 to rotate. The fan blade 87 drives the L-shaped rotating rod 85 to rotate around the connecting bearing 84. The L-shaped rotating rod 85 then drives the bird-repelling ribbon 86 to rotate synchronously. The bird-repelling ribbon 86 generates a continuous dynamic visual impact during rotation, combined with the local airflow generated by the rotation of the L-shaped rotating rod 85. Under the dual stimulation of disturbance, common wild birds such as sparrows and pigeons will stay away from the photovoltaic support area due to their instinctive wariness of moving objects, thus preventing birds from staying and defecating on the surface of the photovoltaic panels. The acidic substances contained in bird droppings not only block sunlight transmission but may also corrode the surface coating of the photovoltaic panels. Long-term accumulation will cause irreversible decline in photoelectric conversion efficiency. This bird-repelling structure uses physical methods to drive away birds without the need for chemical agents, adapts to the wild ecological environment, reduces the risk of bird droppings pollution from the source, and effectively prevents bird droppings from obstructing the power generation efficiency of the photovoltaic panels. This structure gives the photovoltaic support a reliable bird-repelling function, which not only ensures the power generation efficiency of the photovoltaic panels but also reduces the frequency of cleaning and maintenance of the photovoltaic panel surface.

[0044] During the operation of the photovoltaic support system, temperature sensor 77 monitors the surface temperature of the photovoltaic panel in real time and converts the temperature value into an electrical signal, which is then sent to PLC controller 16. If the temperature value detected by temperature sensor 77 exceeds the preset temperature warning threshold of PLC controller 16, PLC controller 16 controls fan 17 to increase its operating power. The higher the temperature at the photovoltaic panel exceeds the preset warning threshold, the greater the suction power of fan 17 controlled by PLC controller 16, and the two are directly proportional until fan 17 reaches its maximum suction power. The air blown by fan 17 is transported to hollow box 81 through support cylinder 2, support pipe 4, hollow block 10, and air pipe 88, and finally sprayed onto the photovoltaic panel through first exhaust nozzle 82 and second exhaust nozzle 83. The design significantly improves airflow speed around the photovoltaic panel above and below, and because the air drawn in by the fan 17 comes from the intake metal cylinder 94 (which has a temperature difference of 8℃-12℃ with the photovoltaic panel), it can quickly reduce the surface temperature of the photovoltaic panel, preventing thermal degradation caused by high temperature. It also reduces problems such as aging of internal semiconductor materials and failure of encapsulation film caused by high temperature, extending the service life of the photovoltaic panel and ensuring its power generation stability under long-term high-intensity sunlight in the field. It also prevents power outages caused by high temperature triggering the component protection mechanism. This structural design gives the photovoltaic support a highly efficient cooling function, which not only improves the power generation effect of the photovoltaic panel, but also enhances the reliability of the photovoltaic support.

[0045] During the operation of the photovoltaic support system, the dust concentration sensor 89 monitors the dust levels around the photovoltaic panels in real time and converts the dust concentration value into an electrical signal, which is then sent to the PLC controller 16. If the dust concentration value detected by the dust concentration sensor 89 exceeds the preset dust concentration warning threshold of the PLC controller 16, the PLC controller 16 controls the fan 17 to increase its operating power. The higher the dust concentration around the photovoltaic panels exceeds the preset warning threshold, the greater the suction power of the fan 17 controlled by the PLC controller 16, and the two are directly proportional until the fan 17 reaches its maximum suction power. At this point, the outside air first passes through the filter frame 98 for preliminary filtration, and then through the filter plate 97 for secondary filtration. Subsequently, the filtered air enters the hollow base 1 through the intake metal cylinder 94 and the corrugated pipe 95, and the air passes through the filter sponge pad 24 for final filtration, ensuring that the air entering the fan 17 is clean and free of impurities. The clean air blown by the fan 17 passes through the support cylinder 2, support pipe 4, and hollow block 1. The air is delivered to the hollow box 81 via the air pipe 88, and finally sprayed onto the top and bottom of the photovoltaic panel through the first exhaust nozzle 82 and the second exhaust nozzle 83. The high-speed clean airflow forms a barrier air film layer on the surface of the photovoltaic panel. This dynamic air film layer increases the contact resistance between dust particles and the surface of the photovoltaic panel, making it difficult for dry impurities such as sand and dust in the outdoor air to adhere. At the same time, the high-speed airflow generates a lateral shear force on the fine dust already attached to the surface of the photovoltaic panel, peeling it off the surface and expelling it with the airflow, achieving contactless self-cleaning. This cleaning method does not require an additional water source, is perfectly adapted to the water-scarce environment in the field, and avoids the scratch damage to the surface of the photovoltaic panel that may be caused by traditional manual cleaning. It effectively maintains the cleanliness of the photovoltaic panel surface, ensures the transmittance of sunlight, and further ensures the stability of the photoelectric conversion efficiency. This structural design gives the photovoltaic support a highly efficient dustproof function, which not only reduces the frequency of cleaning and maintenance of the photovoltaic panel surface, but also improves the power generation effect of the photovoltaic panel and the reliability of the photovoltaic support.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A smart foldable photovoltaic bracket, comprising a hollow base (1), characterized in that, The hollow base (1) has a support cylinder (2) fixedly embedded at the top end, and a connecting ring (3) fixedly embedded at the top end of the support cylinder (2). The inner wall of the connecting ring (3) is slidably sleeved with a support tube (4), and the bottom end of the support tube (4) is fixedly sleeved with a sealing ring (5). The outer wall of the sealing ring (5) is slidably connected to the inner wall of the support cylinder (2). The outer wall of the connecting ring (3) has two symmetrically distributed screw holes, and the hole walls of the screw holes are fixedly threaded with positioning bolts (6). The top end of the support tube (4) is fixedly connected to a hollow block (10), and a sealed bearing (11) is fixedly embedded in the top end of the hollow block (10). A support rod (12) is fixedly connected to the inner wall of the sealed bearing (11), and a connecting mesh plate (13) is fixedly connected to the inner wall of the hollow block (10). A servo motor (14) is fixedly connected to the lower surface of the connecting mesh plate (13). The output end of the servo motor (14) passes through the upper surface of the connecting mesh plate (13) and is fixedly connected to the bottom end of the support rod (12). A connecting thread is opened at the top end of the support rod (12), and a photovoltaic panel fixing mechanism (7) is threaded onto the top end of the support rod (12). The photovoltaic panel fixing mechanism (7) is fixedly connected to a protective mechanism (8) on its side. A filter metal plate (15) is fixedly connected to the inner wall of the hollow base (1). A PLC controller (16) and a fan (17) are fixedly connected to the upper surface of the filter metal plate (15). The air outlet of the fan (17) passes through the bottom end of the support cylinder (2) and communicates with the internal cavity of the support cylinder (2). The hollow base (1) has air intake and positioning mechanisms (9) fixedly connected to both outer walls.

2. The intelligent foldable photovoltaic bracket according to claim 1, characterized in that, The photovoltaic panel fixing mechanism (7) includes a threaded cylinder (71) threadedly connected to the top of the support rod (12). The top of the threaded cylinder (71) is fixedly connected to a top plate (72) at an incline. The top plate (72) has round holes at its four corners, and a screw (73) is movably connected to the wall of the round hole. A washer (74) is movably sleeved on the wall of the screw (73). A pressure plate (75) is fixedly connected to the top of the screw (73). A limit nut (76) is threadedly sleeved on the bottom wall of the screw (73). A through hole is opened on the outer surface of the top plate (72), and a temperature sensor (77) is fixedly connected to the wall of the through hole. A protective cover (78) is fixedly sleeved on the outer wall of the temperature sensor (77).

3. The intelligent foldable photovoltaic bracket according to claim 2, characterized in that, The protective mechanism (8) includes a hollow box (81) fixedly connected to the side wall of the top plate (72). The outer wall of the hollow box (81) is inclined and fixedly connected to a first exhaust nozzle (82) and a second exhaust nozzle (83). A fixing hole is opened at the center of the upper surface of the hollow box (81), and a connecting bearing (84) is fixedly connected to the hole wall. An L-shaped rotating rod (85) is fixedly connected to the inner wall of the connecting bearing (84). Two bird-repelling ribbons (86) are fixedly connected to the top side of the L-shaped rotating rod (85). A fan blade (87) is fixedly sleeved at the bottom end of the L-shaped rotating rod (85). An air pipe (88) is fixedly embedded on the lower surface of the hollow box (81) at the fan blade (87). The air inlet end of the air pipe (88) is fixedly connected to the top outer wall of the hollow block (10). An installation hole is opened at the top of the hollow box (81), and a dust concentration sensor (89) is fixedly connected to the hole wall of the installation hole.

4. The intelligent foldable photovoltaic bracket according to claim 1, characterized in that, The air intake and positioning mechanism (9) includes a U-shaped plate (91) fixedly connected to the side wall of the hollow base (1). Support bearings (92) are fixedly embedded in the outer walls of the two vertical sections of the U-shaped plate (91). Rotating blocks (93) are fixedly connected to the inner walls of the support bearings (92). An air intake metal cylinder (94) is fixedly connected to the outer walls of the two rotating blocks (93). A bellows pipe (95) is fixedly connected to the outer wall of one end of the air intake metal cylinder (94). The air outlet of the air inlet cylinder (94) is fixedly connected to the bottom outer wall of the hollow base (1). A pad (96) is fixedly connected to the lower outer wall of the other end of the air inlet cylinder (94). A rectangular air inlet hole is opened on the upper outer wall of the side end of the air inlet cylinder (94), and a filter screen plate (97) is fixedly connected to the wall of the rectangular air inlet hole. A filter screen frame (98) is fixedly connected to the upper outer wall of the side end of the air inlet cylinder (94), and an arc-shaped cover plate (99) is fixedly connected to the outer wall of the filter screen frame (98).

5. The intelligent foldable photovoltaic bracket according to claim 4, characterized in that, The outer wall of the air intake metal cylinder (94) is movably connected to two arc-shaped limiting plates (18), and pointed inserts (19) are fixedly connected to the lower surfaces of the two sides of the arc-shaped limiting plates (18).

6. The intelligent foldable photovoltaic bracket according to claim 4, characterized in that, The upper surfaces of the two arc-shaped cover plates (99) are fixedly connected with hanging rings (20), and the outer wall of the support cylinder (2) is fixedly connected with two elastic rubber blocks (21). The outer wall of the elastic rubber blocks (21) is fixedly connected with hooks (22) that cooperate with the hanging rings (20).

7. The intelligent foldable photovoltaic bracket according to claim 1, characterized in that, The upper surface of the filter metal plate (15) is provided with multiple through holes, and the walls of the through holes are movably embedded with rubber protrusions (23). The outer walls of the multiple rubber protrusions (23) are fixedly connected to the filter sponge pad (24), and the side wall of the filter sponge pad (24) is in close contact with the inner wall of the hollow base (1).

8. The intelligent foldable photovoltaic bracket according to claim 1, characterized in that, The lower surface of the hollow base (1) is provided with a threaded countersunk hole, and the hole wall of the threaded countersunk hole is sealed with a bottom cover (25).

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