Photovoltaic power generation system and control method thereof

Abstract

The invention discloses a photovoltaic power generation system and a control method thereof. The photovoltaic power generation system comprises an equipment base, a rectangular frame module and a control module. The rectangular frame module comprises a fixed seat, a main frame, a photovoltaic panel, a first filter plate, a second filter plate and a water spraying pipe network, the main frame is of a quadrangular prism structure and comprises four side face frames, and the photovoltaic panel, the first filter plate, the second filter plate and the water spraying pipe network are sequentially carried on the four side face frames. Wherein the two side frames carrying the water spraying pipe network and the second filter plate are hinged to the fixed seat; a hinge shaft is arranged between the two side frames carrying the photovoltaic panel and the first filter plate; and a hydraulic driving assembly is arranged between the two side frames carrying the first filter plate and the second filter plate. According to the photovoltaic power generation system and the control method thereof, the working temperature and the illuminated angle of the photovoltaic panel can be adjusted, so that the power generation efficiency of the photovoltaic panel is improved; and meanwhile, an indoor ventilation and cooling function is added on the basis of a photovoltaic power generation function.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic technology, and in particular to a photovoltaic power generation system and a control method thereof. Background Art

[0002] With the growth of global energy demand and the improvement of environmental awareness, photovoltaic power generation, as a clean and renewable energy form, has received more and more attention. The efficiency of photovoltaic power generation is affected by many factors, including solar radiation intensity, photovoltaic panel temperature, and light irradiation angle. For example, under ideal conditions, the photovoltaic panel has the highest power generation efficiency when the surface temperature is 25°C. This is because at this temperature, all parameters of the photovoltaic panel are in the optimal state; when the temperature exceeds 25°C, the peak power of a single photovoltaic panel will lose about 0.35% to 0.45% for every 1°C increase, and the voltage will decrease by about 210-212mV. This is because high temperature will reduce the light absorption efficiency and photoelectric conversion efficiency of the photovoltaic panel.

[0003] However, the traditional photovoltaic system cannot adjust the working temperature of the photovoltaic panel, nor can it adjust the angle of light exposure as the sun moves. At the same time, the traditional photovoltaic system only has the function of power generation, and its function is relatively simple.

[0004] To this end, the present invention provides a photovoltaic power generation system and a control method thereof, which can adjust the working temperature and light angle of the photovoltaic panel during operation to improve the power generation efficiency of the photovoltaic panel; at the same time, the function of indoor ventilation and cooling is added on the basis of the photovoltaic power generation function, which is a technical problem that technical personnel in this field need to solve. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a photovoltaic power generation system and a control method thereof, so that the working temperature and the angle of illumination of the photovoltaic panels can be adjusted during operation to improve the power generation efficiency of the photovoltaic panels; at the same time, the function of indoor ventilation and cooling is added on the basis of the photovoltaic power generation function.

[0006] The objective of the present invention is achieved through the following technical solutions:

[0007] A photovoltaic power generation system, comprising: an equipment base, a rectangular frame module and a control module, wherein the rectangular frame module and the control module are both installed in the equipment base;

[0008] The rectangular frame module comprises: a fixing seat, a main frame, a photovoltaic panel, a first filter plate, a second filter plate and a water spray pipe network. The main frame is a quadrangular column structure, which comprises four side frames, and two adjacent side frames are hinged to each other; the photovoltaic panel, the first filter plate, the second filter plate and the water spray pipe network are sequentially mounted on the four side frames of the main frame;

[0009] Among them, the two side frames carrying the water spray network and the second filter plate are hinged on the fixed seat; there is a hinge shaft between the two side frames carrying the photovoltaic panel and the first filter plate, and both ends of the hinge shaft are slidably arranged on the equipment base; a hydraulic drive component is provided between the two side frames carrying the first filter plate and the second filter plate, and the hydraulic drive component is used to drive the main frame to open and close and deform.

[0010] In one embodiment, the water spray pipe network includes: a main pipe, a branch pipe connected to the main pipe, and a plurality of nozzles arranged on the branch pipes. The main pipe is fixedly mounted on the side frame. The branch pipe can be deflected relative to the main pipe to change the direction of the nozzle. The nozzle has two water spraying modes: water column spray and water mist spray.

[0011] In one of the embodiments, a driving motor is provided on the branch pipe, and the driving motor causes the branch pipe to deflect to change the direction of the nozzle.

[0012] In one of the embodiments, each of the nozzles is provided with a solenoid valve, and the solenoid valve is used to change the water spraying mode of the nozzle.

[0013] In one embodiment, a working space is formed inside the main frame, and an air inlet space and an air outlet space are formed inside the equipment base. The air inlet space and the air outlet space are independent of each other, and both are ventilated through the working space.

[0014] The second filter plate is located between the air inlet space and the working space, and the first filter plate is located between the air outlet space and the working space.

[0015] In one of the embodiments, a fan is disposed on the second filter plate, and the fan is used to force air flow from the air inlet space toward the working space.

[0016] In one embodiment, the second filter plate is provided with a metal mesh for filtering large particles, and the first filter plate is provided with filter cotton for filtering dust.

[0017] In one embodiment, the control module includes: a built-in power supply, an integrated controller and a water pump assembly. The photovoltaic panel charges the built-in power supply through the integrated controller, and the built-in power supply supplies power to the hydraulic drive assembly and the water pump assembly through the integrated controller. The water pump assembly is connected to the water spray network.

[0018] In one embodiment, the equipment base is provided with: a water reservoir, a water collection component and a water filtering component, the water pump component is connected to the water reservoir, the water collection component is connected to the water reservoir through the water filtering component, the water collection component is used to collect water dripping from the rectangular frame module, and the water filtering component is used to filter the water collected by the water collection component.

[0019] A control method is used to control the above photovoltaic power generation system, which mainly includes the following steps:

[0020] The water spray pipe network sprays water mist into the interior of the main frame;

[0021] The outdoor air passes through the second filter plate and blows toward the photovoltaic panel. The water mist flows with the air and adheres to the back of the photovoltaic panel. The water droplets evaporate and absorb heat to reduce the temperature of the photovoltaic panel. The outdoor air passes through the second filter plate and then the first filter plate, and finally enters the room.

[0022] As time changes, the hydraulic drive assembly gradually changes the angle between the two side frames carrying the first filter plate and the second filter plate so that the inclination of the photovoltaic panel adapts to the change of the light angle;

[0023] The hydraulic drive assembly drives the main frame to deform, and the water spray network flushes the first filter plate and the second filter plate.

[0024] In summary, the photovoltaic power generation system and control method thereof of the present invention can adjust the working temperature and light angle of the photovoltaic panel during operation to improve the power generation efficiency of the photovoltaic panel; at the same time, the indoor ventilation and cooling function is added on the basis of the photovoltaic power generation function. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 It is a structural schematic diagram of the photovoltaic power generation system of the present invention;

[0027] Figure 2 It is a schematic diagram of the internal structure of the photovoltaic power generation system of the present invention;

[0028] Figure 3 for Figure 2 The structural schematic diagram of the rectangular frame module shown;

[0029] Figure 4for Figure 3 A schematic diagram of a partial structure of a rectangular frame module shown;

[0030] Figure 5 for Figure 3 A schematic diagram of the local structure of the water spray pipe network shown;

[0031] Figure 6 It is a schematic diagram of the changing state of the main frame when the hinge axis is away from the fixed seat;

[0032] Figure 7 This is a schematic diagram of the changing state of the main frame when the hinge axis approaches the fixed seat. DETAILED DESCRIPTION

[0033] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0034] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0036] The present invention provides a photovoltaic power generation system 10, such as Figure 1 and Figure 2 As shown, it includes: an equipment base 100 , a rectangular frame module 200 and a control module 300 , and the rectangular frame module 200 and the control module 300 are both installed in the equipment base 100 .

[0037] like Figure 3 and Figure 4As shown, the rectangular frame module 200 includes: a fixing seat 210, a main frame 220, a photovoltaic panel 230, a first filter plate 240, a second filter plate 250 and a water spray pipe network 260. The main frame 220 is a quadrangular column structure, which includes four side frames 221, and two adjacent side frames 221 are hinged to each other. The photovoltaic panel 230, the first filter plate 240, the second filter plate 250 and the water spray pipe network 260 are sequentially mounted on the four side frames 221 of the main frame 220.

[0038] Among them, Figure 3 As shown, the specific distribution is as follows: the two side frames 221 carrying the water spray pipe network 260 and the second filter plate 250 are hingedly arranged on the fixed seat 210; there is a hinge shaft 222 between the two side frames 221 carrying the photovoltaic panel 230 and the first filter plate 240, and the two ends of the hinge shaft 222 are slidably arranged on the equipment base 100; a hydraulic drive component (not shown) is arranged between the two side frames 221 carrying the first filter plate 240 and the second filter plate 250, and the hydraulic drive component is used to drive the main frame 220 to open and close and deform. The deformation of the main frame 220 can change the inclination angle of the four side frames 221, thereby changing the relative position relationship of the photovoltaic panel 230, the first filter plate 240, the second filter plate 250 and the water spray pipe network 260 to adapt to different working states. The specific working principle will be described below.

[0039] In this embodiment, if Figure 5 As shown, the water spraying pipe network 260 includes: a main pipe 261, a branch pipe 262 connected to the main pipe 261, and a plurality of nozzles 263 arranged on the branch pipe 262. The main pipe 261 is fixedly mounted on the side frame 221. The branch pipe 262 can deflect relative to the main pipe 261 to change the direction of the nozzle 263, and the nozzle 263 has two water spraying modes of water spraying column and water spraying mist. The water spraying mode cooperates with the deformation of the main frame 220 to realize different working states of the photovoltaic power generation system 10. The specific working principle will be described below.

[0040] Preferably, a drive motor (not shown) is provided on the branch pipe 262, and the drive motor causes the branch pipe 262 to deflect to change the direction of the nozzle 263. Of course, the branch pipe 262 can also be deflected by other linkage structures, such as belts, chains or gear racks. Preferably, each nozzle 263 is provided with a solenoid valve (not shown), which is used to change the water spraying mode of the nozzle 263.

[0041] In the present invention, if Figure 2As shown, a working space 201 is formed in the main frame 220, and an air inlet space 101 and an air outlet space 102 are formed inside the equipment base 100. The air inlet space 101 is connected to the outside of the building, and the air outlet space 102 is connected to the room. The air inlet space 101 and the air outlet space 102 are independent of each other, and the two are ventilated to each other through the working space 201. The second filter plate 250 is located between the air inlet space 101 and the working space 201, and the first filter plate 240 is located between the air outlet space 102 and the working space 201. Preferably, a fan 251 (such as Figure 3 and Figure 4 As shown), the fan 251 is used to promote the airflow from the air inlet space 101 to the working space 201.

[0042] When working, the photovoltaic power generation system 10 of the present invention has the function of indoor ventilation and cooling (fresh air system function) in addition to the function of solar power generation. When the outside air is to enter the building, it will pass through the air inlet space 101, the working space 201 and the air outlet space 102 in sequence, and finally be discharged into the building. Preferably, the second filter plate 250 is provided with a metal mesh (not shown) for filtering large particles, such as leaves, paper towels and gravel, etc.; and the first filter plate 240 is provided with filter cotton (not shown) for filtering fine dust. In this way, the air passing through the second filter plate 250 and the first filter plate 240 can be filtered clean, thereby reducing the amount of debris and dust entering the room.

[0043] The control module 300 includes: a built-in power supply, an integrated controller and a water pump assembly (not shown). The photovoltaic panel 230 charges the built-in power supply through the integrated controller. The built-in power supply supplies power to the hydraulic drive assembly and the water pump assembly through the integrated controller, and the water pump assembly is connected to the water spray network 260.

[0044] In combination with the above structure, the working principle of the photovoltaic power generation system 10 of the present invention is explained below:

[0045] First, the photovoltaic power generation system 10 is installed on the roof of the building. When working, the photovoltaic panel 230 faces the sun, converts sunlight into electrical energy and stores it in the built-in power supply. Since the photovoltaic panel 230 has the highest power generation efficiency when the surface temperature is 25°C, when the surface temperature exceeds 25°C, the high temperature will cause the light absorption efficiency and photoelectric conversion efficiency of the photovoltaic panel 230 to decrease. Therefore, during operation, when the surface temperature of the photovoltaic panel 230 is too high, the water spray network 260 will dissipate heat. Specifically, the nozzle 263 of the water spray network 260 sprays water mist to the working space 201, and the fan 251 of the second filter plate 250 causes the air to flow from the air inlet space 101 to the working space 201. At this time, the water mist is blown to the back of the photovoltaic panel 230 by the gas, and under the action of the airflow, the water mist on the back of the photovoltaic panel 230 evaporates faster, thereby absorbing the heat of the photovoltaic panel 230 and achieving heat dissipation of the photovoltaic panel 230;

[0046] Secondly, the power generation efficiency of the photovoltaic panel 230 is also affected by the angle of light exposure. When the photovoltaic panel 230 is facing the sun, that is, the angle of light is close to vertical, the photoelectric conversion efficiency is optimal. Therefore, the main frame 220 of the present invention can be deformed during operation, and then the inclination angle of the photovoltaic panel 230 can be adjusted to adapt to the changes in the angle of sunlight during the day. Specifically, the hydraulic drive component can change the angle between the two side frames 221 carrying the first filter plate 240 and the second filter plate 250. As the angle changes, the main frame 220 as a whole will deform according to the parallelogram law. For example, in the morning, the above angle becomes an obtuse angle under the drive of the hydraulic drive component, and the distance between the hinge shaft 222 and the fixed seat 210 is far (such as Figure 6 As shown in FIG. 2 ), the photovoltaic panel 230 tilts toward the sun; as the sun gradually rises, the above angle gradually decreases under the drive of the hydraulic drive assembly, and the hinge shaft 222 gradually approaches the fixing seat 210, so that the photovoltaic panel 230 gradually "tilts" (as shown in FIG. 2 ). Figure 7 As shown), to adapt to the change of light angle, so that the photovoltaic panel 230 maintains good power generation efficiency;

[0047] Furthermore, the photovoltaic power generation system 10 of the present invention also has the function of indoor ventilation and cooling. During the heat dissipation process of the photovoltaic panel 230, the fan 251 causes the outdoor air to flow from the air inlet space 101 to the working space 201, and then from the working space 201 to the air outlet space 102, and finally enters the room. During this period, the outdoor air will first pass through the second filter plate 250 for preliminary filtration to remove large particles such as leaves, paper towels and gravel. After entering the working space 201, since the water spray pipe network 260 sprays water mist when the photovoltaic panel 230 dissipates heat, the water mist will combine with the dust in the air, that is, it will filter the air in the working space 201; at the same time, the water mist absorbs heat and evaporates, which can reduce the temperature of the air in the working space 201. Subsequently, the air in the working space 201 passes through the first filter plate 240 to filter the residual dust. In this way, the outdoor air can be discharged into the room after being filtered and cooled, thereby achieving the purpose of indoor ventilation and cooling;

[0048] It should be noted that the indoor ventilation and cooling function does not conflict with the original photovoltaic power generation function. The structural design of the main frame 220 ensures that even if it is deformed during the process of adjusting the tilt angle of the photovoltaic panel 230, sufficient working space 201 can still be retained for air flow.

[0049] Compared with the prior art, the photovoltaic power generation system 10 of the present invention can adjust the working temperature and the angle of illumination of the photovoltaic panel 230 during operation, so that the power generation efficiency of the photovoltaic panel 230 is maintained at a high level. Moreover, in addition to the function of solar power generation, the photovoltaic power generation system 10 of the present invention also has the function of indoor ventilation and cooling, which can filter and cool the air discharged into the room. It is worth noting that the two functions of "adjusting the working temperature of the photovoltaic panel 230" and "ventilating and cooling the room" are carried out at the same time, and both use the water mist sprayed by the water spray pipe network 260; that is, the water spray pipe network 260 and the fan 251 cooperate to have two functions, which are to dissipate heat and cool the photovoltaic panel 230, and to filter and cool the air in the working space 201. Such a design improves the diversity and practicality of the system functions, making the photovoltaic power generation system 10 of the present invention particularly suitable for Gobi areas with sufficient sunshine and strong wind and sand.

[0050] It should be emphasized that the distribution positions of the photovoltaic panel 230, the first filter plate 240, the second filter plate 250 and the water spray pipe network 260 of the present invention are not randomly installed. Specifically, the second filter plate 250 is located below the first filter plate 240, so that the air flows from bottom to top; and the water spray pipe network 260 is arranged near the second filter plate 250 and below the photovoltaic panel 230. When the water spray pipe network 260 sprays water mist, the second filter plate 250 will blow the water mist to the opposite photovoltaic panel 230 to achieve the purpose of heat dissipation. At the same time, the air flowing from bottom to top will give the water mist an upward support force, thereby extending the time that the water mist stays in the air, so that it can fully absorb the dust in the air.

[0051] Furthermore, in the present invention, the deformation of the main frame 220 cooperates with the water spray network 260, so that the photovoltaic power generation system 10 has the function of self-cleaning, that is, the water spray network 260 can clean the first filter plate 240 and the second filter plate 250. Specifically, the deformation of the main frame 220 makes the hinge shaft 222 away from the fixing seat 210, such as Figure 6 As shown, at this time, the second filter plate 250 and the water spray pipe network 260 are close to each other. After the nozzle 263 adjusts the angle and changes the water spray mode, it can spray water to the second filter plate 250, thereby washing the second filter plate 250; and the main frame 220 is deformed again so that the hinge shaft 222 is close to the fixing seat 210, as shown in FIG. Figure 7 As shown, at this time, the first filter plate 240 is close to the water spray network 260 , and after the nozzle 263 adjusts its angle again, it can spray water to the first filter plate 240 to wash the first filter plate 240 .

[0052] Preferably, the equipment base 100 is provided with: a water reservoir, a water collection component and a water filter component (not shown), the water pump component is connected to the water reservoir, the water collection component is connected to the water reservoir through the water filter component, the water collection component is used to collect water dripping from the rectangular frame module 200, and the water filter component is used to filter the water collected by the water collection component. In this way, water circulation can be achieved in the equipment base 100, thereby greatly reducing water consumption.

[0053] The present invention also provides a control method for controlling the photovoltaic power generation system 10, which mainly includes the following steps:

[0054] Step 1: The water spray pipe network 260 sprays water mist into the interior of the main frame 220;

[0055] Step 2: After passing through the second filter plate 250, the outdoor air is blown to the back of the photovoltaic panel 230. The water mist flows with the air and adheres to the back of the photovoltaic panel 230. The water droplets evaporate and absorb heat to reduce the temperature of the photovoltaic panel 230. After passing through the second filter plate 250, the outdoor air passes through the first filter plate 240 and finally enters the room. In other words, the outdoor air flows from the air inlet space 101 to the working space 201, and then from the working space 201 to the air outlet space 102. During this period, it is filtered and cooled before being discharged into the room.

[0056] Step 3: As time changes, the hydraulic drive assembly gradually changes the angle between the two side frames 221 carrying the first filter plate 240 and the second filter plate 250, so that the inclination of the photovoltaic panel 230 adapts to the change of the light angle;

[0057] In step 4, the hydraulic drive assembly drives the main frame 220 to deform, and the water spray network 260 flushes the first filter plate 240 and the second filter plate 250 .

[0058] It can be seen that through the above control method, the present invention can adjust the working temperature and the angle of illumination of the photovoltaic panel 230 during operation, so that the photovoltaic panel 230 is maintained in a suitable working temperature range and a good angle of illumination, thereby improving the power generation efficiency. At the same time, in addition to the function of solar power generation, the photovoltaic power generation system 10 also has the function of indoor ventilation and cooling, which can filter and cool the air discharged into the room; it also has the function of self-cleaning, which can automatically and conveniently wash the first filter plate 240 and the second filter plate 250, reducing the difficulty of manual operation.

[0059] In summary, the photovoltaic power generation system 10 and its control method of the present invention can adjust the working temperature and the angle of illumination of the photovoltaic panel 230 during operation to improve the power generation efficiency of the photovoltaic panel 230; at the same time, the function of indoor ventilation and cooling is added on the basis of the photovoltaic power generation function, thereby improving the diversity and practicality of the system functions.

[0060] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A photovoltaic power generation system, characterized in that: include: An equipment base, a rectangular frame module and a control module, wherein the rectangular frame module and the control module are both installed in the equipment base; The rectangular frame module comprises: a fixing seat, a main frame, a photovoltaic panel, a first filter plate, a second filter plate and a water spray pipe network. The main frame is a quadrangular column structure, which comprises four side frames, and two adjacent side frames are hinged to each other; the photovoltaic panel, the first filter plate, the second filter plate and the water spray pipe network are sequentially mounted on the four side frames of the main frame; Among them, the two side frames carrying the water spray network and the second filter plate are hinged on the fixed seat; there is a hinge shaft between the two side frames carrying the photovoltaic panel and the first filter plate, and both ends of the hinge shaft are slidably arranged on the equipment base; a hydraulic drive component is provided between the two side frames carrying the first filter plate and the second filter plate, and the hydraulic drive component is used to drive the main frame to open and close and deform.

2. The photovoltaic power generation system according to claim 1, characterized in that: The water spray pipe network includes: a main pipe, a branch pipe connected to the main pipe, and a plurality of nozzles arranged on the branch pipes. The main pipe is fixedly installed on the side frame; the branch pipe can be deflected relative to the main pipe to change the direction of the nozzle, and the nozzle has two water spraying modes: water column spraying and water mist spraying.

3. The photovoltaic power generation system according to claim 2, characterized in that: The branch pipe is provided with a driving motor, and the driving motor causes the branch pipe to deflect to change the direction of the spray head.

4. The photovoltaic power generation system according to claim 2, characterized in that: Each of the nozzles is provided with a solenoid valve, and the solenoid valve is used to change the water spraying mode of the nozzle.

5. The photovoltaic power generation system according to claim 1, characterized in that: A working space is formed inside the main frame, and an air inlet space and an air outlet space are formed inside the equipment base. The air inlet space and the air outlet space are independent of each other, and both are ventilated through the working space; The second filter plate is located between the air inlet space and the working space, and the first filter plate is located between the air outlet space and the working space.

6. The photovoltaic power generation system according to claim 5, characterized in that: A fan is disposed on the second filter plate, and the fan is used to force airflow to flow from the air inlet space toward the working space.

7. The photovoltaic power generation system according to claim 1, characterized in that: The second filter plate is provided with a metal mesh for filtering large particles, and the first filter plate is provided with filter cotton for filtering dust.

8. The photovoltaic power generation system according to claim 1, characterized in that: The control module includes: a built-in power supply, an integrated controller and a water pump assembly. The photovoltaic panel charges the built-in power supply through the integrated controller. The built-in power supply supplies power to the hydraulic drive assembly and the water pump assembly through the integrated controller. The water pump assembly is connected to the water spray network.

9. The photovoltaic power generation system according to claim 8, characterized in that: The equipment base is provided with: a water reservoir, a water collection component and a water filtering component. The water pump component is connected to the water reservoir, and the water collection component is connected to the water reservoir through the water filtering component. The water collection component is used to collect water dripping from the rectangular frame module, and the water filtering component is used to filter the water collected by the water collection component.

10. A control method for controlling the photovoltaic power generation system according to any one of claims 1 to 9, which mainly comprises the following steps: The water spray pipe network sprays water mist into the interior of the main frame; The outdoor air passes through the second filter plate and blows toward the photovoltaic panel. The water mist flows with the air and adheres to the back of the photovoltaic panel. The water droplets evaporate and absorb heat to reduce the temperature of the photovoltaic panel. The outdoor air passes through the second filter plate and then the first filter plate, and finally enters the room. As time changes, the hydraulic drive assembly gradually changes the angle between the two side frames carrying the first filter plate and the second filter plate so that the inclination of the photovoltaic panel adapts to the change of the light angle; The hydraulic drive assembly drives the main frame to deform, and the water spray network flushes the first filter plate and the second filter plate.

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