Automatic cooling device for photovoltaic power station assembly

Abstract

The application discloses an automatic cooling device for photovoltaic power station components, which can realize automatic cooling and automatic cleaning of photovoltaic components, does not pollute the surface of the photovoltaic components, guarantees the service performance of the photovoltaic components, improves the safety performance of the photovoltaic components, and prolongs the service life of the photovoltaic components. The automatic cooling device comprises a fixing table, an unfolding groove is formed in the top of the fixing table and penetrates through one side wall surface of the fixing table, the unfolding groove comprises a bottom surface, an inclined surface and two side inner wall surfaces, two limiting baffle plates connected with the inclined surface of the unfolding groove are symmetrically installed on the two sides of the bottom surface of the unfolding groove, a rotatable photovoltaic component is arranged between the two limiting baffle plates, a bidirectional rotating motor for driving the photovoltaic component to rotate is arranged on the outer wall surface of one limiting baffle plate, a water tank is formed in the bottom surface of the unfolding groove, a water circulating device is arranged in the water tank and on the inclined surface of the unfolding groove, and the water circulating device is used for recycling the water collected in the water tank and then conveying the water to the photovoltaic component through the inclined surface of the unfolding groove for washing and cooling.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic power generation equipment technology, specifically to an automatic cooling device for photovoltaic power station modules. Background Technology

[0002] Photovoltaic power generation is a technology that directly converts solar energy into electrical energy using the photovoltaic effect of semiconductor materials. It generally consists of three main parts: photovoltaic modules, combiner boxes, and inverters. Solar cells are connected in series and encapsulated to form photovoltaic modules with a certain light-collecting area. These, along with power controllers and grid-connected equipment, form a photovoltaic power generation system. Current research indicates that when silicon-based photovoltaic modules operate at high temperatures, their open-circuit voltage drops significantly as the backsheet temperature increases. This causes a severe shift in the operating point of the power generation unit, resulting in a decrease in system output power and preventing the photovoltaic modules from achieving their maximum performance.

[0003] A photovoltaic module cooling device (CN209201013U) is currently disclosed in the prior art, including a water source, a water pump, a water supply network, a water spray branch pipe, and water spray devices. The top surface of the photovoltaic support is an inclined plane, and multiple photovoltaic modules are laid on the inclined plane. A water spray branch pipe is installed on one side of the top surface of the photovoltaic support at a high position, and several water spray devices are installed on the water spray branch pipe facing the photovoltaic modules. The water inlet end of the water spray branch pipe is connected to one end of the water supply network, and the other end of the water supply network is connected to the water pump. The water inlet of the water pump is connected to the water source. By spraying water onto the surface of the photovoltaic modules, the surface temperature of the photovoltaic modules is effectively reduced, thereby improving the power generation efficiency and power output of the photovoltaic modules.

[0004] However, existing photovoltaic module cooling devices still have the following drawbacks: These devices have specific terrain limitations, requiring the use of wells or ponds. However, photovoltaic power plants are typically located in Gobi Desert, arid regions, and mountainous areas, where wells are often impossible to drill, some are within ecological red lines, and others have complex geological structures. Drilling wells or ponds could cause soil erosion and damage land resources. Furthermore, the location and orientation of these devices are subject to specific restrictions, making it impossible to adjust the photovoltaic modules and resulting in poor sunlight utilization. They also lack protection for the outer surface of the photovoltaic modules. In severe weather (such as hail or sandstorms), impacts from hail or gravel can damage the modules, affecting the power plant's power generation efficiency and compromising safety. Summary of the Invention

[0005] To address the problems existing in the prior art, this invention provides an automatic cooling device for photovoltaic power station modules, which can automatically cool and clean the photovoltaic modules without contaminating the surface of the photovoltaic modules, thus ensuring the performance of the photovoltaic modules, improving their safety performance, and extending their service life.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An automatic cooling device for photovoltaic power station modules includes a fixed platform. The top of the fixed platform has an expansion slot extending through one side wall. The expansion slot includes a bottom surface, an inclined surface, and two inner walls on both sides. Two limiting baffles connected to the inclined surface of the expansion slot are symmetrically installed on both sides of the bottom surface of the expansion slot. A rotatable photovoltaic module is positioned between the two limiting baffles. A bidirectional rotary motor for driving the photovoltaic module to rotate is installed on the outer wall of one of the limiting baffles. A water tank is formed on the bottom surface of the expansion slot. A water circulation device is installed inside the water tank and on the inclined surface of the expansion slot. The water circulation device is used to collect water from inside the water tank and then transport it through the inclined surface of the expansion slot to the photovoltaic module for rinsing and cooling.

[0008] Preferably, the water circulation device includes a shower plate disposed on the inclined surface of the expansion tank, a row of high-pressure nozzles facing the photovoltaic module is disposed on the front side of the shower plate, and a recycling pipe connected to the inside of the water tank is connected to one or both ends of the shower plate, and a high-pressure pump connected to the recycling pipe is disposed inside the water tank.

[0009] Preferably, the angle between the bottom surface of the unfolding groove and the inclined surface is 100° to 160°.

[0010] Preferably, a filter screen adapted to the opening of the water tank is provided at the top opening of the water tank.

[0011] Preferably, the photovoltaic module includes a photovoltaic module box and a photovoltaic panel body embedded in the top of the photovoltaic module box. Connecting columns are connected to both sides of the photovoltaic module box. One connecting column is movably connected to a circular groove opened on the wall of the corresponding limiting baffle, and the other connecting column passes through the wall of the limiting baffle and is connected to the output shaft of the bidirectional rotary motor.

[0012] Preferably, the top of the photovoltaic module is provided with a buffer protection device, which includes a limiting frame. The bottom corner of the limiting frame is connected to the top wall of the corresponding photovoltaic module box through a spring column. The top surface of the limiting frame is provided with a frame-shaped groove, and a light-transmitting plate is snapped into the frame-shaped groove.

[0013] Preferably, the light-transmitting plate is made of stainless steel glass with a smooth surface.

[0014] Preferably, the bottom of the photovoltaic module is provided with a heat dissipation device, which includes a heat dissipation groove opened at the bottom of the photovoltaic module box and a heat dissipation motor installed on the bottom surface inside the heat dissipation groove. A fan is connected to the output shaft of the heat dissipation motor, and a frustum-shaped protective cover is provided at one end of the fan. The protective cover is fixedly connected to the bottom surface inside the heat dissipation groove by a round rod.

[0015] Preferably, a fan device is provided on the side of the fixed platform opposite to the unfolding groove. The fan device includes a fan plate fixedly connected to one side of the fixed platform, a fan groove on the other side of the fan plate, two support plates at the bottom ends of the fan plate, the two support plates being fixedly connected to the wall of the fixed platform, and a row of inclined fan pipes being provided inside the fan groove. The end of the fan pipe away from the fan plate extends and penetrates to the outside of the inclined surface of the unfolding groove.

[0016] Preferably, a guide arc plate is provided on the side of the two limiting baffles that is not connected to the inclined surface of the unfolding groove.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This invention provides an automatic cooling device for photovoltaic power station modules. It incorporates rotatable photovoltaic modules and a water circulation system. During rainy weather, rainwater flows directly down the inclined surface of the expansion groove into the water tank for collection. Simultaneously, a bidirectional rotating motor can be activated daily at different times to rotate the photovoltaic modules along the included angle inside the expansion groove. By adjusting the tilt angle of the photovoltaic modules, the bidirectional rotating motor not only improves the light utilization efficiency of the photovoltaic modules but also reduces the impact of hail on the modules during severe weather, such as hailstorms. Furthermore, the electricity generated by the photovoltaic modules can power the entire device. The water circulation device inside the tank is activated regularly every day to extract the collected aqueous solution from the tank and then use the water circulation device set on the inclined surface of the expansion tank to rinse and cool the photovoltaic modules in a timely and quantitative manner. This prevents the photovoltaic devices from accumulating heat for a long time during photovoltaic operation, which could lead to excessively high equipment temperatures and cause overheating and burnout of the internal electronic components of the photovoltaic modules. In addition, the automatic timed and quantitative rinsing and cleaning of the exterior of the photovoltaic modules helps to extend their service life and ensure stable operation of the equipment. Moreover, the water circulation device in this invention can also realize the recycling of water resources. The water sprayed on the photovoltaic modules drips back into the tank, thereby realizing the recycling of natural water resources. This not only saves water resources but also eliminates the need for manual rinsing and tilting maintenance of the photovoltaic modules. At the same time, the recycling of water resources can improve the effective utilization rate of water resources.

[0019] Furthermore, the filter screen installed at the top opening of the water tank can prevent leaves and large particles of impurities from falling into the tank, ensuring the purity of the water during rinsing and cooling, and preventing impurities from being introduced and damaging devices such as photovoltaic modules.

[0020] Furthermore, by incorporating a buffer protection device, when severe weather such as heavy rain or hail occurs, the buffer protection device located on the upper side of the photovoltaic module intercepts hail and rainwater that impact the photovoltaic panel body through a light-transmitting plate. When the hail and rainwater impact the light-transmitting plate, the light-transmitting plate and the limiting frame reduce the external impact through the elasticity of the bottom spring column, thus protecting the photovoltaic panel body. At the same time, sunlight can directly pass through the light-transmitting plate to provide stable photovoltaic operation for the photovoltaic panel body.

[0021] Furthermore, by incorporating a heat dissipation device, the present invention automatically activates a fan after the photovoltaic module has been converting sunlight into electrical energy for a period of time. The rotating fan dissipates heat from the bottom of the photovoltaic module, thereby reducing the heat dissipation effect at the bottom of the photovoltaic module.

[0022] Furthermore, by incorporating an air-guiding device, when wind blows towards the rear of the fixed platform, the wind blowing towards the air-guiding plate is forced into the interior of the air-guiding groove. Then, through the air-guiding pipe connected to the interior of the air-guiding groove, the wind is guided to the inclined surface inside the unfolding groove and discharged, thus ventilating the lower end of the photovoltaic module, improving the heat dissipation effect inside the unfolding groove, and making reasonable use of natural wind resources to improve the ventilation effect of the heat dissipation components inside the unfolding groove. Attached Figure Description

[0023] Figure 1 This is a front structural schematic diagram of the automatic cooling device for photovoltaic power station modules of the present invention;

[0024] Figure 2 This is a schematic diagram of the water circulation device of the present invention;

[0025] Figure 3 This is a front view of the photovoltaic module of the present invention;

[0026] Figure 4 This is a schematic diagram of the bottom surface of the photovoltaic module of the present invention;

[0027] Figure 5 This is a schematic diagram of the air-guiding device on the back side of the fixed platform of the present invention.

[0028] In the diagram, 1. Fixed platform; 2. Expansion slot; 3. Limiting baffle; 4. Water tank; 5. High-pressure pump; 6. Filter screen; 7. Recovery pipe; 8. Shower head; 9. High-pressure nozzle; 10. Support plate; 11. Air intake plate; 12. Air intake pipe; 13. Air intake trough; 14. Photovoltaic module box; 15. Photovoltaic panel body; 16. Connecting column; 17. Bidirectional rotary motor; 18. Spring column; 19. Limiting frame; 20. Light-transmitting plate; 21. Heat dissipation trough; 22. Heat dissipation motor; 23. Fan; 24. Protective cover; 25. Guide arc plate. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to specific embodiments. These descriptions are for explanation purposes only and are not intended to limit the scope of the invention.

[0030] Example

[0031] This invention discloses an automatic cooling device for photovoltaic power station modules, such as... Figure 1 As shown, it includes a fixed platform 1, which is a rectangular platform. The top of the fixed platform 1 has an expansion groove 2 that penetrates the front wall of the fixed platform 1. The expansion groove 2 is an inverted right-angled trapezoidal groove. The angle between the inner bottom surface and the inclined surface of the expansion groove 2 is between 100 and 160 degrees. Two limiting baffles 3 are symmetrically installed on the inner bottom surface of the expansion groove 2 and are connected to the inclined surface of the expansion groove 2. The tops of the two limiting baffles 3 are parallel to the top of the fixed platform 1. The short bottom edge of the inverted right-angled trapezoidal plate of the two limiting baffles 3 is connected to the bottom surface of the expansion groove 2, and the inclined side is connected to the inclined surface of the expansion groove 2. A rotatable photovoltaic module is arranged between two limiting baffles 3. A bidirectional rotary motor 17 for driving the photovoltaic module to rotate is arranged on the outer wall of one of the limiting baffles 3. A buffer protection device is arranged on the top of the photovoltaic module, and a heat dissipation component is arranged on the bottom of the photovoltaic module. An air-guiding device is arranged on the fixed platform 1. A water tank 4 is opened on the bottom surface of the unfolding groove 2. A water circulation device for heat dissipation of the photovoltaic module is arranged between the water tank 4 and the interior of the unfolding groove 2. A guide arc plate 25 is arranged on the front side of the two limiting baffles 3 to further limit and fix the limiting baffles 3.

[0032] Among them, such as Figure 3 and 4 As shown, the photovoltaic module includes a photovoltaic module box 14 and a photovoltaic panel body 15 embedded in the top wall of the photovoltaic module box 14. Both outer walls of the photovoltaic module box 14 are connected to connecting posts 16. One connecting post 16 is movably connected to a circular groove opened on the wall of the corresponding limiting baffle 3, and the other connecting post 16 is connected to the output shaft of the bidirectional rotary motor 17. The photovoltaic module is rotated and adjusted by the bidirectional rotary motor 17, which can adjust the tilt angle of the photovoltaic module. This not only improves the light utilization efficiency of the photovoltaic module, but also reduces the impact of external hail on the photovoltaic panel body 15 by controlling the tilt angle difference of the photovoltaic module in severe weather, such as when hail occurs.

[0033] Among them, such as Figure 2As shown, the water circulation device includes a shower plate 8 located on the inclined surface inside the expansion tank 2. A row of high-pressure nozzles 9 facing the photovoltaic modules are provided on the front wall of the shower plate 8. A recycling pipe 7 connecting to the inside of the water tank 4 is connected to the outer wall of the shower plate 8. A high-pressure pump 5 connected to the recycling pipe 7 is provided inside the water tank 4. By setting up the water circulation device, the rainwater stored inside the water tank 4 is continuously sprayed out from the high-pressure nozzles 9, and the water sprayed onto the photovoltaic modules drips back into the water tank 4, thus recycling the natural water resources. This not only saves water resources and eliminates the need for manual rinsing and tilting maintenance of the photovoltaic modules, but also improves the effective utilization rate of water resources.

[0034] The top opening of the water tank 4 is equipped with a filter screen 6 that is compatible with the interior of the water tank 4. The filter screen 6 isolates fallen leaves and large particles of impurities from the outside.

[0035] Among them, such as Figure 3 As shown, the buffer protection device includes a limiting frame 19 corresponding to the top of the photovoltaic module box 14. The four corners of the bottom surface of the limiting frame 19 are fixedly connected to the corresponding top wall of the photovoltaic module box 14 through spring columns 18. The limiting frame 19 is an elastic frame-shaped plate with a frame-shaped groove on the inner wall of the limiting frame 19. A light-transmitting plate 20 is snapped onto the frame-shaped groove of the limiting frame 19. The light-transmitting plate 20 is a smooth stainless steel glass plate. By setting up the buffer protection device, when there is severe weather such as rainstorm or hail, the buffer protection device located on the upper side of the photovoltaic module intercepts the hail and rainwater that hit the photovoltaic panel body 15 through the light-transmitting plate 20. When the light-transmitting plate 20 is hit, the light-transmitting plate 20 and the limiting frame 19 reduce the external impact through the elasticity of the bottom spring column 18, which protects the photovoltaic panel body 15. At the same time, the sunlight can directly pass through the light-transmitting plate 20 to perform photovoltaic operation on the photovoltaic panel body 15.

[0036] Among them, such as Figure 4 As shown, the bottom of the photovoltaic module box 14 has an inwardly recessed heat dissipation groove 21. The heat dissipation device includes a heat dissipation motor 22 installed on the bottom surface inside the heat dissipation groove 21. A fan 23 is fixedly connected to the output shaft of the heat dissipation motor 22. An inverted frustum-shaped protective cover 24 is installed at the lower end of the fan 23. The protective cover 24 is connected to the bottom surface inside the heat dissipation groove 21 by three round rods. The protective cover 24 is made of rubber. By installing the heat dissipation device, after the photovoltaic module has been converting sunlight into electrical energy for a period of time, the fan 23 is automatically started. The rotating fan 23 dissipates heat from the bottom of the photovoltaic module, reducing the heat dissipation effect at the bottom of the photovoltaic module.

[0037] Among them, such as Figure 5As shown, the air-guiding device includes an air-guiding plate 11 located on the rear side of the fixed platform 1. An air-guiding groove 13 with a trapezoidal cross-section is opened on the rear side of the air-guiding plate 11. Two triangular support plates 10 are connected to the bottom of the support plate 10. The two support plates 10 are fixedly connected to the outer wall adjacent to the fixed platform 1. A row of inclined air-guiding pipes 12 are inserted into the bottom surface of the air-guiding groove 13. The end of the air-guiding pipe 12 away from the air-guiding plate 11 extends to the inclined surface inside the expansion groove 2. With the air-guiding device, when wind blows towards the rear side of the fixed platform 1, the wind blowing towards the air-guiding plate 11 is forced into the interior of the air-guiding groove 13. Then, the wind is guided to the inclined surface inside the expansion groove 2 through the air-guiding pipe 12, which is connected to the interior of the air-guiding groove 13, and discharged. This ventilates the lower end of the photovoltaic module, improves the heat dissipation effect inside the expansion groove 2, and makes reasonable use of natural wind resources to improve the ventilation effect of the heat dissipation components inside the expansion groove 2.

[0038] The working principle of the automatic cooling device for photovoltaic power station modules described in this invention is as follows:

[0039] During use, a rotating photovoltaic module and water circulation device are installed. Rainwater falls down the inclined surface inside the expansion groove 2 and is collected inside the water tank 4. The filter screen 6 at the top opening of the water tank 4 prevents leaves and large particles from falling into the water tank 4. Depending on the time of day, the bidirectional rotating motor 17 is started to drive the photovoltaic module box 14 and the photovoltaic panel body 15 to rotate along the included angle inside the expansion groove 2, improving the utilization rate of sunlight by the photovoltaic panel body 15. At the same time, the electricity generated by the photovoltaic module supplies power to the entire equipment. The high-pressure pump 5 inside the water tank 4 starts on a timed basis every day to extract the water solution inside the water tank 4 and then transport it to the inside of the shower plate 8 through the recovery pipe 7. Then, the photovoltaic module is rinsed and cooled by a row of high-pressure nozzles 9 on the shower plate 8. This avoids the photovoltaic device from accumulating heat for a long time during photovoltaic operation, which can cause the equipment temperature to be too high and cause the internal electronic components of the photovoltaic module to burn out due to heat overload. At the same time, it can also automatically and quantitatively clean the outside of the photovoltaic module, improve the service life of the photovoltaic module, and ensure stable operation of the equipment.

[0040] To achieve the above objectives, the main technical means adopted in this invention are described clearly, completely, and accurately, and the substantive content of the invention is explained. The degree of disclosure is such that it is sufficient for a person skilled in the art to understand and implement the invention.

Claims

1. An automatic cooling device for photovoltaic power station modules, characterized in that, The device includes a fixed platform (1), and the top of the fixed platform (1) is provided with an expansion groove (2) that penetrates one side wall of the fixed platform (1). The expansion groove (2) includes a bottom surface, an inclined surface and two inner walls on both sides. Two limiting baffles (3) connected to the inclined surface of the expansion groove (2) are symmetrically installed on both sides of the bottom surface of the expansion groove (2). A rotatable photovoltaic module is provided between the two limiting baffles (3). A bidirectional rotary motor (17) for driving the photovoltaic module to rotate is provided on the outer wall of one of the limiting baffles (3). A water tank (4) is provided on the bottom surface of the expansion groove (2). A water circulation device is provided inside the water tank (4) and on the inclined surface of the expansion groove (2). The water circulation device is used to recycle the water collected inside the water tank (4) and transport it to the photovoltaic module through the inclined surface of the expansion groove (2) for rinsing and cooling. The water circulation device includes a shower plate (8) set on the inclined surface of the expansion tank (2), a row of high-pressure nozzles (9) facing the photovoltaic module is provided on the front side of the shower plate (8), and a recycling pipe (7) connecting the shower plate (8) to the inside of the water tank (4) is connected to one or both ends of the shower plate (8), and a high-pressure pump (5) connected to the recycling pipe (7) is provided inside the water tank (4). The photovoltaic module includes a photovoltaic module box (14) and a photovoltaic panel body (15) embedded in the top of the photovoltaic module box (14). The photovoltaic module box (14) is connected to two sides by connecting posts (16). One side of the connecting post (16) is movably connected to a circular groove opened on the wall of the corresponding limiting baffle (3), and the other side of the connecting post (16) passes through the wall of the limiting baffle (3) and is connected to the output shaft of the bidirectional rotary motor (17). The bottom of the photovoltaic module is provided with a heat dissipation device, which includes a heat dissipation groove (21) opened at the bottom of the photovoltaic module box (14) and a heat dissipation motor (22) provided on the bottom surface inside the heat dissipation groove (21). A fan (23) is connected to the output shaft of the heat dissipation motor (22), and a frustum-shaped protective cover (24) is provided at one end of the fan (23). The protective cover (24) is fixedly connected to the bottom surface inside the heat dissipation groove (21) by a round rod. The angle between the bottom surface and the inclined surface of the unfolding groove (2) is 100°~160°; The top of the photovoltaic module is provided with a buffer protection device, which includes a limiting frame (19). The bottom corner of the limiting frame (19) is connected to the top wall of the corresponding photovoltaic module box (14) through a spring column (18). The top surface of the limiting frame (19) is provided with a frame-shaped groove, and a light-transmitting plate (20) is snapped into the frame-shaped groove. A drafting device is provided on the side opposite to the unfolding groove (2) of the fixed platform (1). The drafting device includes a drafting plate (11) fixedly connected to one side of the fixed platform (1). A drafting groove (13) is opened on the other side of the drafting plate (11). Two support plates (10) are provided at both ends of the bottom of the drafting plate (11). The two support plates (10) are fixedly connected to the wall of the fixed platform (1). A row of inclined drafting pipes (12) is provided inside the drafting groove (13). The end of the drafting pipe (12) away from the drafting plate (11) extends and penetrates to the outside of the inclined surface of the unfolding groove (2).

2. The automatic cooling device for photovoltaic power station modules according to claim 1, characterized in that, The top opening of the water tank (4) is provided with a filter screen (6) that is compatible with the opening of the water tank (4).

3. The automatic cooling device for photovoltaic power station modules according to claim 1, characterized in that, The light-transmitting plate (20) is made of a smooth stainless steel glass plate.

4. The automatic cooling device for photovoltaic power station modules according to claim 1, characterized in that, The two limiting baffles (3) are provided with a guide arc plate (25) on the side that is not connected to the inclined surface of the unfolding groove (2).

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