Photovoltaic panel cleaning and cooling device, photovoltaic power generation equipment and photovoltaic air conditioning system

Abstract

The utility model provides a photovoltaic panel cleaning and cooling device, photovoltaic power generation equipment and a photovoltaic air conditioning system, the photovoltaic panel cleaning and cooling device comprises a water supply rod, a first mobile control mechanism, an infrared thermal imager, a dust sensor, a sprinkler head and a second mobile control mechanism, the first movement control mechanism can control the water supply rod to move in the length direction of the photovoltaic panel, the thermal infrared imager and the dust sensor are arranged above the photovoltaic panel, the spraying head can be movably supported on the water supply rod in the width direction of the photovoltaic panel, a water inlet of the spraying head communicates with a water supply cavity of the water supply rod, and a water outlet of the spraying head communicates with a water outlet of the water supply rod. The spraying head is provided with water spraying holes for spraying cleaning water towards the front face of the photovoltaic panel, and the second movement control mechanism can control the spraying head to move relative to the water supply rod in the width direction of the photovoltaic panel. The photovoltaic panel cleaning and cooling device can accurately clean and cool the area, needing to be cleaned and cooled, of the photovoltaic panel, so that the cleaning and cooling effect and efficiency are improved, and then the power generation efficiency of the photovoltaic panel is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic power generation technical field especially is related to a photovoltaic panel cleaning and cooling device, photovoltaic power generation equipment with the photovoltaic panel cleaning and cooling device and photovoltaic air conditioning system with the photovoltaic power generation equipment. BACKGROUND

[0002] Photovoltaic power generation is a kind of technology using the photovoltaic effect of semiconductor interface to convert light energy into electric energy, with relatively high conversion efficiency, safety, flexibility and other characteristics, and is the mainstream technology of solar power generation.

[0003] In order to improve the photovoltaic power generation efficiency, the photovoltaic panel of the photovoltaic power generation equipment is directly installed outdoors for use, so that in the long-term use process, dust deposition in the atmosphere, some bird droppings, plant leaves and some other dirt will adhere to the photovoltaic panel and shield the photovoltaic panel, thereby affecting the cleanliness of the entire surface or partial surface of the photovoltaic panel, and further affecting the absorption and conversion efficiency of the photovoltaic panel to sunlight. And in the long-term use process, the photovoltaic panel will heat up under sunlight, and high temperature will affect the power generation efficiency of the photovoltaic panel, which is specifically manifested as that the power generation capacity decreases at high temperature, and high temperature may also cause the photovoltaic panel to have hot spot effect, that is, due to shielding or dirt, the local current is lower than that of other parts, causing overheating in this area, and even damaging the photovoltaic panel.

[0004] In order to cool and clean the photovoltaic panel to ensure the power generation efficiency, the existing cleaning and cooling device is provided with a water spraying pipe, and a water spraying hole for spraying cleaning water towards the photovoltaic panel is formed in the water spraying pipe, and the water spraying hole sprays cleaning water towards the surface of the photovoltaic panel to wash the surface of the photovoltaic panel clean and cool the photovoltaic panel. However, the water spraying hole of the existing cleaning and cooling device is fixedly arranged on the water spraying pipe, and it is difficult to accurately wash the dirty area of the photovoltaic panel, thereby affecting the cleaning and cooling effect and efficiency, and further affecting the power generation efficiency of the photovoltaic panel. SUMMARY

[0005] The first object of the utility model is to provide a photovoltaic panel cleaning and cooling device, which can accurately clean and cool the area of the photovoltaic panel that needs to be cleaned and cooled, thereby improving the cleaning and cooling effect and efficiency, and further improving the power generation efficiency of the photovoltaic panel.

[0006] The second object of the utility model is to provide a photovoltaic power generation equipment with the above photovoltaic panel cleaning and cooling device.

[0007] The third object of the utility model is to provide a photovoltaic air conditioning system with the above photovoltaic power generation equipment.

[0008] In order to realize the first purpose of the utility model, the utility model provides a photovoltaic panel cleaning and cooling device, including water supply rod, first mobile control mechanism, infrared thermal imager, dust sensor, spray head and second mobile control mechanism, water supply rod is used for setting in the top of photovoltaic panel, and water supply rod extends across photovoltaic panel in the width direction of photovoltaic panel, first mobile control mechanism can control water supply rod and move in the length direction of photovoltaic panel, infrared thermal imager and dust sensor are used for setting in the top of photovoltaic panel respectively, and infrared thermal imager is used for detecting the temperature distribution of photovoltaic panel, and dust sensor is used for detecting the dirt distribution of photovoltaic panel, the water inlet of spray head is communicated with the water supply cavity of water supply rod, the water supply cavity of water supply rod is communicated with the water inlet of spray head, and spray head is provided with water injection hole for spraying cleaning water to the front surface of photovoltaic panel, and second mobile control mechanism can control spray head and move in the width direction of photovoltaic panel relative to water supply rod.

[0009] From the above scheme, the infrared thermal imager of the photovoltaic panel cleaning and cooling device of the utility model detects the temperature distribution of the photovoltaic panel, so that the hot spot area or the overheating area on the front surface of the photovoltaic panel can be quickly located, and the dust sensor of the photovoltaic panel cleaning and cooling device detects the dirt distribution of the photovoltaic panel, so that the dirt area on the front surface of the photovoltaic panel and the shielding degree of the dirt on the front surface of the photovoltaic panel can be quickly located. When the infrared thermal imager detects that the hot spot area or the overheating area appears on the front surface of the photovoltaic panel, and / or when the dust sensor detects that the dirt area on the front surface of the photovoltaic panel and the shielding degree of the dirt on the front surface of the photovoltaic panel reach the set cleaning value, the first mobile control mechanism of the photovoltaic panel cleaning and cooling device of the utility model controls the water supply rod to drive the spray head to move in the length direction of the photovoltaic panel, and simultaneously the second mobile control mechanism controls the spray head to move in the width direction of the photovoltaic panel relative to the water supply rod, so that the spray head is quickly and accurately controlled to move to the cleaning and cooling area required on the front surface of the photovoltaic panel, and the water injection hole of the spray head is accurately sprayed to the cleaning and cooling area required on the front surface of the photovoltaic panel, so that the cleaning and cooling area required on the front surface of the photovoltaic panel is washed clean and cooled.

[0010] Therefore, the spray head of the photovoltaic panel cleaning and cooling device of the utility model can move in the length direction of the photovoltaic panel and in the width direction of the photovoltaic panel, so that the spray head is quickly and accurately moved to the cleaning and cooling area required on the front surface of the photovoltaic panel, and the cleaning and cooling area required on the photovoltaic panel can be accurately cleaned and cooled, so that the cleaning and cooling effect and efficiency are improved, and the power generation efficiency of the photovoltaic panel is further improved.

[0011] A preferred scheme is that the photovoltaic panel cleaning and cooling device further comprises a heat dissipation mechanism, the heat dissipation mechanism is arranged on the back surface of the photovoltaic panel, and the heat dissipation mechanism comprises a heat dissipation pipe, the heat dissipation pipe extends in a serpentine shape, and a heat dissipation medium flows in the heat dissipation pipe.

[0012] Further, the heat dissipation mechanism further comprises heat dissipation fins arranged on the heat dissipation pipe.

[0013] Further, the water spraying end surface of the water spraying head is parallel to the front surface of the photovoltaic panel, and the water spraying end surface of the water spraying head is provided with a plurality of water spraying holes.

[0014] Further, the number of the infrared thermal imagers is four, and the four infrared thermal imagers are respectively arranged at four corners of the photovoltaic panel.

[0015] Further, the photovoltaic panel cleaning and cooling device further comprises a water collecting tank, and the length direction of the photovoltaic panel is arranged to be inclined relative to the vertical direction, and the water collecting tank is arranged at the lower end of the photovoltaic panel inclined downward.

[0016] Further, the photovoltaic panel cleaning and cooling device further comprises a third movement control mechanism, a movement seat and a roller brush, the roller brush extends across above the photovoltaic panel in the width direction of the photovoltaic panel, the third movement control mechanism is capable of controlling the movement seat to move in the length direction of the photovoltaic panel, the roller brush is rotatably supported on the movement seat, and the brush head of the roller brush is capable of contacting the front surface of the photovoltaic panel.

[0017] Further, the photovoltaic panel cleaning and cooling device further comprises a lifting control mechanism and a lifting seat, the lifting control mechanism is arranged on the movement seat and is capable of controlling the lifting seat to move in the normal direction of the photovoltaic panel, and the roller brush is rotatably supported on the lifting seat, so that the brush head of the roller brush moves towards or away from the front surface of the photovoltaic panel.

[0018] In order to achieve the second purpose of the present application, the present application provides a photovoltaic power generation equipment, comprising a photovoltaic panel and a photovoltaic panel cleaning and cooling device, and the photovoltaic panel cleaning and cooling device is the above-mentioned photovoltaic panel cleaning and cooling device.

[0019] In order to achieve the third purpose of the present application, the present application provides a photovoltaic air conditioning system, comprising a photovoltaic power generation equipment and an air conditioner, the photovoltaic power generation equipment is the above-mentioned photovoltaic power generation equipment, the photovoltaic power generation equipment supplies power to the air conditioner, and / or the condensed water generated by the air conditioner is supplied into the water supply rod of the photovoltaic power generation equipment. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural diagram of an embodiment of the photovoltaic power generation equipment of the present application.

[0021] Figure 2is an exploded view of the photovoltaic power generation equipment embodiment of the utility model.

[0022] Figure 3 is a partial structure exploded view of the photovoltaic power generation equipment embodiment of the utility model.

[0023] Figure 4 is the first visual angle structure diagram of water supply rod of photovoltaic panel cleaning and cooling device in the photovoltaic power generation equipment embodiment of the utility model.

[0024] Figure 5 is the second visual angle structure diagram of water supply rod of photovoltaic panel cleaning and cooling device in the photovoltaic power generation equipment embodiment of the utility model.

[0025] Figure 6 is the first visual angle structure diagram of spray head of photovoltaic panel cleaning and cooling device in the photovoltaic power generation equipment embodiment of the utility model.

[0026] Figure 7 is the second visual angle structure diagram of spray head of photovoltaic panel cleaning and cooling device in the photovoltaic power generation equipment embodiment of the utility model.

[0027] Figure 8 is the first visual angle structure diagram of heat dissipation mechanism of photovoltaic panel cleaning and cooling device in the photovoltaic power generation equipment embodiment of the utility model.

[0028] Figure 9 is the second visual angle structure diagram of heat dissipation mechanism of photovoltaic panel cleaning and cooling device in the photovoltaic power generation equipment embodiment of the utility model.

[0029] The utility model is further described below in combination with the drawings and embodiments. Specific implementation

[0030] Referring to Figures 1 to 9The embodiment discloses a photovoltaic power generation equipment 10, which comprises a photovoltaic panel 11 and a photovoltaic panel cleaning and cooling device. The photovoltaic panel cleaning and cooling device comprises a water supply rod 15, a first movement control mechanism, an infrared thermal imager 12, a dust sensor 13, a spray head 16 and a second movement control mechanism. The water supply rod 15 is arranged above the photovoltaic panel 11 and extends across the photovoltaic panel 11 in the width direction 111 of the photovoltaic panel 11. The first movement control mechanism controls the movement of the water supply rod 15 in the length direction 112 of the photovoltaic panel 11. Meanwhile, the infrared thermal imager 12 and the dust sensor 13 of the photovoltaic panel cleaning and cooling device are arranged above the photovoltaic panel 11. The infrared thermal imager 12 detects the temperature distribution of the photovoltaic panel 11, and the dust sensor 13 detects the dirt distribution of the photovoltaic panel 11. The spray head 16 of the photovoltaic panel cleaning and cooling device is movably supported on the water supply rod 15 in the width direction 111 of the photovoltaic panel 11. The water inlet 163 of the spray head 16 is connected with the water supply cavity of the water supply rod 15. The spray head 16 is provided with water injection holes 161 which spray cleaning water towards the front surface of the photovoltaic panel 11. The second movement control mechanism controls the movement of the spray head 16 relative to the water supply rod 15 in the width direction 111 of the photovoltaic panel 11.

[0031] The infrared thermal imager 12 of the photovoltaic panel cleaning and cooling device detects the temperature distribution of the photovoltaic panel 11, so as to quickly locate the hot spot area or the overheating area on the front surface of the photovoltaic panel 11. The dust sensor 13 of the photovoltaic panel cleaning and cooling device detects the dirt distribution of the photovoltaic panel 11, so as to quickly locate the dirt area on the front surface of the photovoltaic panel 11 and the shielding degree of the dirt on the front surface of the photovoltaic panel 11. When the infrared thermal imager 12 detects the hot spot area or the overheating area on the front surface of the photovoltaic panel 11, and / or when the dust sensor 13 detects the dirt area on the front surface of the photovoltaic panel 11 and the shielding degree of the dirt on the front surface of the photovoltaic panel 11 reaches the set cleaning value, the first movement control mechanism of the photovoltaic panel cleaning and cooling device controls the water supply rod 15 to drive the spray head 16 to move in the length direction 112 of the photovoltaic panel 11, and the second movement control mechanism controls the spray head 16 to move relative to the water supply rod 15 in the width direction 111 of the photovoltaic panel 11, so as to quickly and accurately control the spray head 16 to move to the cleaning and cooling area on the front surface of the photovoltaic panel 11. The water injection holes 161 of the spray head 16 accurately spray cleaning water towards the cleaning and cooling area on the front surface of the photovoltaic panel 11, so as to wash and cool the cleaning and cooling area on the front surface of the photovoltaic panel 11.

[0032] Therefore, the spray head 16 of the photovoltaic panel cleaning and cooling device can move in the length direction 112 of the photovoltaic panel 11 and the width direction 111 of the photovoltaic panel 11, so that the spray head 16 can quickly and accurately move to the front of the photovoltaic panel 11 that needs to be cleaned and cooled, and the photovoltaic panel 11 can be accurately cleaned and cooled, thereby improving the cleaning and cooling effect and efficiency, and further improving the power generation efficiency of the photovoltaic panel 11.

[0033] In order to further improve the cooling effect and efficiency of the photovoltaic panel 11, the photovoltaic panel cleaning and cooling device further comprises a heat dissipation mechanism 19 arranged on the back of the photovoltaic panel 11, and the heat dissipation mechanism 19 comprises a heat dissipation pipe 191 extending in a serpentine shape, and a heat dissipation medium flows in the heat dissipation pipe 191, which can effectively take away the heat on the back of the photovoltaic panel 11, thereby avoiding the influence of the high temperature on the back of the photovoltaic panel 11 on the power generation efficiency. Specifically, the heat dissipation pipe 191 is connected to a flowing water source. Further, the heat dissipation mechanism 19 further comprises a heat dissipation fin 192 arranged on the heat dissipation pipe 191, thereby further improving the cooling effect and efficiency of the photovoltaic panel 11.

[0034] In order to further improve the cleaning effect and efficiency, the water spraying end surface 162 of the spray head 16 is arranged in parallel with the front of the photovoltaic panel 11, and a plurality of water spraying holes 161 are formed in the water spraying end surface 162 of the spray head 16, so that the cleaning water can be sprayed better to cool and clean the front of the photovoltaic panel 11. Specifically, the water supply rod 15 is provided with a guide groove 151 extending in the width direction 111 of the photovoltaic panel 11, the water inlet end of the spray head 16 is inserted into the inside of the water supply rod 15 through the guide groove 151, and the water inlet end of the spray head 16 is slidably moved relative to the water supply rod 15 in the width direction 111 of the photovoltaic panel 11 relative to the guide groove 151, and the guide groove 151 can limit and guide the movement of the spray head 16 in the width direction 111 of the photovoltaic panel 11, thereby improving the stability of the movement of the spray head 16.

[0035] In order to improve the stability of the movement of the water supply rod 15 and improve the cleaning and cooling effect, the photovoltaic panel cleaning and cooling device further comprises two slide rails 14, which are respectively arranged on both sides of the photovoltaic panel 11 in the width direction 111 of the photovoltaic panel 11, and the slide rails 14 extend in the length direction 112 of the photovoltaic panel 11, and the two ends of the water supply rod 15 are slidably supported on the two slide rails 14. Specifically, the first movement control mechanism can be composed of a motor, a lead screw, etc., or the first movement control mechanism can be composed of a motor, a gear, a rack, etc. Further, the second movement control mechanism can be composed of a motor, a lead screw, etc., or the second movement control mechanism can be composed of a motor, a gear, a rack, etc.

[0036] In order to further improve the cleaning and cooling effect and efficiency, the photovoltaic panel cleaning and cooling device further comprises a third movement control mechanism, a moving seat and a roller brush 17. The roller brush 17 extends across the upper side of the photovoltaic panel 11 in the width direction 111 of the photovoltaic panel 11. The third movement control mechanism can control the moving seat to move in the length direction 112 of the photovoltaic panel 11. The roller brush 17 is rotatably supported on the moving seat, and the brush head of the roller brush 17 can contact the front side of the photovoltaic panel 11. After the water spray holes 161 of the spray head 16 accurately spray cleaning water to the required cleaning and cooling area of the front side of the photovoltaic panel 11, the third movement control mechanism controls the moving seat to drive the roller brush 17 to move to the corresponding position in the length direction 112 of the photovoltaic panel 11, so that the brush head of the roller brush 17 contacts the front side of the photovoltaic panel 11, thereby brushing off stubborn dirt and brushing away the cleaning water, preventing the residual cleaning water from affecting the local temperature of the photovoltaic panel 11. Specifically, the third movement control mechanism of the present embodiment can be composed of a motor, a lead screw, etc., or the third movement control mechanism of the present embodiment can be composed of a motor, a gear, a rack, etc.

[0037] Specifically, the photovoltaic panel cleaning and cooling device further comprises a water collecting tank 18. The length direction 112 of the photovoltaic panel 11 is arranged obliquely relative to the vertical direction. The water collecting tank 18 is located at the lower end of the downwardly inclined photovoltaic panel 11, thereby receiving the cleaned sewage and dirt.

[0038] In order to further improve the cleaning and cooling effect, the photovoltaic panel cleaning and cooling device further comprises a lifting control mechanism and a lifting seat. The lifting control mechanism is arranged on the moving seat and can control the lifting seat to move in the normal direction of the photovoltaic panel 11. The roller brush 17 is rotatably supported on the lifting seat, so that the brush head of the roller brush 17 moves towards or away from the front side of the photovoltaic panel 11. Thus, when it is necessary to perform brushing cleaning operation on the front side of the photovoltaic panel 11, the lifting control mechanism controls the lifting seat to drive the roller brush 17 to move towards the front side of the photovoltaic panel 11 in the normal direction of the photovoltaic panel 11, so that the brush head of the roller brush 17 contacts the front side of the photovoltaic panel 11 to perform brushing cleaning operation. When the brushing cleaning operation is completed and it is necessary to reset to the upper end of the downwardly inclined photovoltaic panel 11, the lifting control mechanism controls the lifting seat to drive the roller brush 17 to move away from the front side of the photovoltaic panel 11 in the normal direction of the photovoltaic panel 11, so that the brush head of the roller brush 17 is separated from the front side of the photovoltaic panel 11, thereby avoiding the brush head of the roller brush 17 from causing secondary pollution to the cleaned front side of the photovoltaic panel 11. Specifically, the lifting control mechanism of the present embodiment can be composed of a motor, a lead screw, etc., or the lifting control mechanism of the present embodiment can be composed of a motor, a gear, a rack, etc.

[0039] In order to improve the accuracy of detection, the number of infrared thermal imagers 12 in the embodiment is four, and the four infrared thermal imagers 12 are respectively located at the four corners of the photovoltaic panel 11. In addition, the number of dust sensors 13 in the embodiment is two or more, and the plurality of dust sensors 13 are arranged around the photovoltaic panel 11.

[0040] Specifically, the photovoltaic power generation device 10 in the embodiment supplies power to an air conditioner, so that the air conditioner and the photovoltaic power generation device 10 in the embodiment constitute a photovoltaic air conditioning system. The air conditioner generates condensate water when it operates in a cooling mode. The water supply rod 15 of the photovoltaic panel cleaning and cooling device in the photovoltaic power generation device 10 can be connected to the drain pipe of the air conditioner through a water connecting pipe, so that the condensate water generated by the air conditioner is supplied to the water supply rod 15 of the photovoltaic power generation device 10 for cleaning and cooling. Because the condensate water is generally generated slowly, the condensate water is stored in the water supply cavity of the water supply rod 15 through the water connecting pipe after being generated, and can be directly used when needed. In order to ensure the sufficiency of water, the water connecting pipe can be connected to other water sources in addition to the drain pipe of the air conditioner. At the same time, the condensate water has low temperature and can play a good cooling effect. When the condensate water is insufficient, cleaning or cooling is needed, and another water source will be used. In order to improve the water pressure of the water jet hole 161 of the spray head 16, a pressurizing device can be arranged on the water connecting pipe or the water supply cavity of the water supply rod 15.

[0041] Further, the movable seat in the embodiment is slidably supported on the slide rail 14, so that the brush head of the roller brush 17 on the movable seat can stably and reliably brush off stubborn dirt on the front surface of the photovoltaic panel 11, such as bird droppings and other dirt.

[0042] The above embodiment is only a preferred example of the present application, and does not limit the scope of the present application. Therefore, equivalent changes or modifications made in accordance with the structure, features and principles of the present application patent application scope should be included in the scope of the present application patent application.

Claims

1. A photovoltaic panel cleaning and cooling device, comprising a water supply rod arranged above a photovoltaic panel and extending across the photovoltaic panel in a width direction of the photovoltaic panel, and a first movement control mechanism capable of controlling the water supply rod to move in a length direction of the photovoltaic panel, characterized in that: the photovoltaic panel cleaning and cooling device further comprises an infrared thermal imager and a dust sensor, the infrared thermal imager and the dust sensor are arranged above the photovoltaic panel respectively, the infrared thermal imager is used to detect temperature distribution of the photovoltaic panel, and the dust sensor is used to detect dirt distribution of the photovoltaic panel; a spray head is movably supported on the water supply rod in the width direction of the photovoltaic panel, a water inlet of the spray head is communicated with a water supply cavity of the water supply rod, the spray head is provided with water injection holes for injecting cleaning water towards a front surface of the photovoltaic panel, and a second movement control mechanism is capable of controlling the spray head to move relative to the water supply rod in the width direction of the photovoltaic panel.

2. The photovoltaic panel cleaning and cooling device according to claim 1, characterized in that: the photovoltaic panel cleaning and cooling device further comprises a heat dissipation mechanism arranged on a back surface of the photovoltaic panel, and the heat dissipation mechanism comprises a heat dissipation pipe extending in a serpentine shape, and a heat dissipation medium flows through the heat dissipation pipe.

3. The photovoltaic panel cleaning and cooling device according to claim 2, characterized in that: the heat dissipation mechanism further comprises heat dissipation fins arranged on the heat dissipation pipe.

4. The photovoltaic panel cleaning and cooling device according to claim 1, characterized in that: a water injection end surface of the spray head is arranged in parallel with the front surface of the photovoltaic panel, and the water injection end surface of the spray head is provided with a plurality of water injection holes; and / or the photovoltaic panel cleaning and cooling device further comprises two slide rails respectively located on two sides of the photovoltaic panel in the width direction of the photovoltaic panel, and the slide rails extend in the length direction of the photovoltaic panel, and two ends of the water supply rod are slidably supported on the two slide rails.

5. The photovoltaic panel cleaning and cooling device according to claim 1, characterized in that: the number of infrared thermal imagers is four, and the four infrared thermal imagers are respectively located at four corners of the photovoltaic panel; and / or the number of dust sensors is more than two, and a plurality of dust sensors are arranged around the photovoltaic panel.

6. The photovoltaic panel cleaning and cooling device according to claim 1, characterized in that: the photovoltaic panel cleaning and cooling device further comprises a water collecting tank, and the length direction of the photovoltaic panel is arranged in an inclined manner relative to a vertical direction, and the water collecting tank is located at a lower end of the photovoltaic panel inclined downward.

7. The photovoltaic panel cleaning and cooling device according to any one of claims 1 to 6, characterized in that: the photovoltaic panel cleaning and cooling device further comprises a third movement control mechanism, a moving seat and a roller brush, and the roller brush extends across above the photovoltaic panel in the width direction of the photovoltaic panel. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The third movement control mechanism can control the movement of the moving seat in the length direction of the photovoltaic panel. The roller brush is rotatably supported on the moving seat, and the brush head of the roller brush can contact the front surface of the photovoltaic panel. 8.The photovoltaic panel cleaning and cooling device according to claim 7, characterized in that: The photovoltaic panel cleaning and cooling device further comprises a lifting control mechanism and a lifting seat. The lifting control mechanism is arranged on the moving seat and can control the movement of the lifting seat in the normal direction of the photovoltaic panel. The roller brush is rotatably supported on the lifting seat, so that the brush head of the roller brush moves towards or away from the front surface of the photovoltaic panel. 9.A photovoltaic power generation device, comprising a photovoltaic panel and a photovoltaic panel cleaning and cooling device, characterized in that: The photovoltaic panel cleaning and cooling device is the photovoltaic panel cleaning and cooling device according to any one of claims 1 to 8. 10.A photovoltaic air conditioning system, comprising a photovoltaic power generation device and an air conditioner, characterized in that: The photovoltaic power generation device is the photovoltaic power generation device according to claim 9; The photovoltaic power generation device supplies power to the air conditioner; And / or, the condensed water generated by the air conditioner is supplied into the water supply rod of the photovoltaic power generation device.

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