Photovoltaic pavement unit with cooling function, photovoltaic pavement and pavement cooling method

Abstract

The invention relates to a photovoltaic pavement unit with a cooling function, a photovoltaic pavement and a pavement cooling method. According to the technical scheme, the photovoltaic pavement unit with the cooling function comprises a road surface layer and a power generation layer, a gap with a certain height exists between the road surface layer and the power generation layer, an atomization nozzle and a fan are arranged on the upper surface of the power generation layer, a base layer is arranged below the power generation layer, a water tank is arranged in the base layer, and a water pump is arranged at the bottom of the water tank. An upper-layer temperature sensor is further arranged on the upper surface of the power generation layer, a control module is further arranged in the base layer, the upper-layer temperature sensor is electrically connected with the control module, and the water pump and the fan are controlled by signals of the control module. The cooling device has the beneficial effects that when the temperature above the power generation layer rises, the atomization nozzles can input water mist between the road surface layer and the power generation layer, fan airflow enables the water mist to be evaporated and cooled, the upper portion of the power generation layer is cooled, the cooling effect of the photovoltaic road surface is better, and the upper temperature and the lower temperature are more balanced.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic power generation, and in particular to a photovoltaic pavement unit with a cooling function, a photovoltaic pavement, and a pavement cooling method. Background Art

[0002] Today, solar photovoltaic power generation technology has become relatively mature. Photovoltaic pavement is to lay solar panels on the road and then cover it with transparent materials as the road surface. Paving photovoltaic pavement can utilize the vast road system as a source of electricity and increase photovoltaic power generation in the city.

[0003] However, photovoltaic pavement is exposed to sunlight for a long time, which generates a lot of heat. In addition, the pavement material covers it, which leads to untimely heat dissipation, shortening the service life of photovoltaic pavement, and the power generation components are easily ignited by heat. Patent document CN108755327B discloses a photovoltaic pavement system. Although a circulating water pipe is provided to dissipate heat, there are also obvious problems: the circulating water pipe is set under the solar panel, and the temperature can only be reduced from the bottom. The soil layer under the photovoltaic pavement has a low temperature. The heating part of the solar panel is the upper surface that receives light, and the temperature of the upper layer is higher than that of the lower layer. If only the lower layer can be cooled, the temperature difference between the upper and lower layers will be too large, shortening the service life of the solar panel and making it easy to damage. Summary of the invention

[0004] Aiming at the problem that uneven cooling up and down of existing photovoltaic pavements leads to excessive temperature difference of solar panels, the present invention provides a photovoltaic pavement unit with a cooling function, which can evenly cool down the solar panels up and down.

[0005] In order to solve the above problems, the technical solution adopted by the present invention is a photovoltaic pavement unit with cooling function, including a road surface layer and a power generation layer, a gap of a certain height between the road surface layer and the power generation layer, a certain number of atomizing nozzles and fans are arranged on the upper surface of the power generation layer, a base layer is arranged below the power generation layer, a water tank is arranged in the base layer, a water pump is arranged at the bottom of the water tank, the atomizing nozzle is connected to the water pump through the nozzle water inlet channel, an upper temperature sensor is also arranged on the upper surface of the power generation layer, a control module is also arranged in the base layer, the upper temperature sensor is electrically connected to the control module, and the water pump and the fan are controlled by the control module signal. When the temperature above the power generation layer rises, the atomizing nozzle can input water mist between the road surface layer and the power generation layer, and the fan generates airflow to evaporate the water mist to dissipate heat, so that the upper part of the power generation layer also has cooling ability, so that the heat dissipation and cooling effect of the photovoltaic pavement is better, and the upper and lower temperatures are more balanced.

[0006] Preferably, the power generation layer and the road surface are supported by a support frame, which is a "well"-shaped frame with air holes. The grid support in the gap is evenly stressed, and the air holes are provided to ensure air flow without affecting the cooling effect.

[0007] Preferably, the power generation layer includes a mounting plate, and the support frame divides the mounting plate into a plurality of square power generation layer areas, wherein the solar panels are mounted in the square power generation layer areas, and the atomizing nozzle is arranged at a corner of the square power generation layer areas. The solar panels are arranged in the "well" type grid of the support frame, and the solar panels are not subjected to pressure and are not easily damaged.

[0008] Preferably, a circulating water pipe is provided below the power generation layer, and the water pump is provided with a first water outlet and a second water outlet which are independent of each other, the first water outlet is connected to the nozzle water inlet, the second water outlet is connected to one end of the circulating water pipe through the water pipe water inlet, and the other end of the circulating water pipe is connected to the water tank through the water pipe water outlet, and a lower layer temperature sensor is provided below the power generation layer, and the lower layer temperature sensor is electrically connected to the control module. The circulating water pipe is provided below the power generation layer, which can also effectively cool the lower part, so that the cooling effect of the photovoltaic pavement is better.

[0009] Preferably, a square area of ​​the power generation layer at the center of the mounting plate is provided with a water injection port, which is connected to the water tank. Water can be added to the water tank through the water injection port.

[0010] Preferably, the support frame divides the road surface into a plurality of surface square areas, and the surface square area directly above the water injection port is a window.

[0011] Preferably, the four walls of the support frame corresponding to the water injection port are closed plates, and a filter is provided at the window opening on the road surface. A water trough is formed above the water injection port, and rainwater and road cleaning water sprayed by a sprinkler truck can be collected through the water trough to replenish the water tank.

[0012] Preferably, the upper surface of the base layer is provided with strip-shaped protrusions, and grooves are formed between adjacent strip-shaped protrusions. The circulating water pipe is arranged in the groove, and the top of the strip-shaped protrusion is fixedly connected to the mounting plate, and the groove is filled with foam. The water pipe is not subjected to pressure and is not easily damaged, and the use of foam to fix it does not affect the cooling effect.

[0013] The present invention also includes a photovoltaic pavement, which is composed of a certain number of the above-mentioned photovoltaic pavement units with cooling function.

[0014] The present invention also includes a road surface cooling method applied to the photovoltaic road surface as described above, the steps are as follows: Setting the upper layer preset temperature and the lower layer preset temperature in the control module; When the temperature measured by the upper temperature sensor is greater than the upper preset temperature, the control module controls the first water outlet of the water pump to open, and the atomizing nozzle sprays water mist between the power generation layer and the road surface. At the same time, the control module controls the fan to turn on, and the water mist evaporates and dissipates heat by blowing air; When the temperature measured by the lower layer temperature sensor is greater than the preset temperature of the lower layer, the control module controls the second water outlet of the water pump to open, and water flows through the circulating water pipe to dissipate heat to the bottom of the power generation layer.

[0015] It can be seen from the above technical solutions that the photovoltaic pavement unit and photovoltaic pavement with cooling function provided by the present invention can effectively dissipate heat and cool the area above the power generation layer. In conjunction with the circulating water pipe below the power generation layer, the cooling effect on the upper and lower layers of the power generation layer can be unified, effectively solving the problem that the existing photovoltaic pavement cannot cool down or can only cool down the lower layer of the solar panel, resulting in excessive temperature difference between the upper and lower layers, and avoiding the reduction in the life of the solar panel or damage due to excessive temperature difference between the upper and lower layers. The pavement cooling method for the photovoltaic pavement provided by the present invention utilizes sensors and control modules for electronic control, and the cooling temperature can be set separately between the upper and lower layers. The control is flexible and precise, and the cooling effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of a specific implementation mode of the present invention.

[0018] Figure 2 It is a top view schematic diagram of a specific embodiment of the present invention.

[0019] Figure 3 It is a schematic diagram of the structure of the support frame in a specific implementation manner of the present invention.

[0020] Description of main reference numerals 1. Road surface, 2. Mounting plate, 3. Solar panel, 4. Support frame, 5. Air hole, 6. Atomizing nozzle, 7. Fan, 8. Base layer, 9. Circulating water pipe, 10. Water pipe inlet, 11. Nozzle inlet, 12. Water pump, 13. Water tank, 14. Water inlet, 15. Water pipe outlet, 16. Upper temperature sensor, 17. Lower temperature sensor, 18. Control module, 19. Filter. DETAILED DESCRIPTION

[0021] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0022] like Figure 1-3 As shown, a photovoltaic pavement unit with a cooling function includes a road surface layer 1 and a power generation layer. There is a gap of a certain height between the road surface layer 1 and the power generation layer. A certain number of atomizing nozzles 6 and fans 7 are arranged on the upper surface of the power generation layer. A base layer 8 is arranged below the power generation layer. A water tank 13 is arranged in the base layer 8. A water pump 12 is arranged at the bottom of the water tank 13. The atomizing nozzle 6 is connected to the water pump 12 through a nozzle water inlet 11. An upper temperature sensor 16 is also arranged on the upper surface of the power generation layer. A control module 18 is also arranged in the base layer 8. The upper temperature sensor 16 is electrically connected to the control module 18. The water pump 12 and the fan 7 are controlled by signals from the control module 18.

[0023] A circulating water pipe 9 is provided below the power generation layer. The water pump 12 includes two independent first and second water outlets. The first water outlet is connected to the nozzle water inlet 11, and the second water outlet is connected to one end of the circulating water pipe 9 through the water pipe water inlet 10. The other end of the circulating water pipe 9 is connected to the water tank 13 through the water pipe outlet 15. A lower layer temperature sensor 17 is provided below the power generation layer, and the lower layer temperature sensor 17 is electrically connected to the control module 18.

[0024] The power generation layer and the road surface layer 1 are supported by a support frame 4, such as Figure 3 As shown, the support frame 4 is a "well" type frame, and a vent 5 is provided on the support frame 4.

[0025] The power generation layer includes a mounting plate 2, and a support frame 4 divides the mounting plate 2 into a plurality of square power generation layer areas. Solar panels 3 are installed in the square power generation layer areas, and an atomizing nozzle 6 is arranged at a corner of the square power generation layer area.

[0026] A square area of ​​the power generation layer at the center position of the mounting plate 2 is provided with a water inlet 14, and the water inlet 14 is connected to the water tank 13. The support frame 4 divides the road surface 1 into a plurality of surface square areas. The surface square area directly above the water inlet 14 is a window, and the four walls of the support frame corresponding to the water inlet 14 are closed plates. A filter 19 is provided at the window of the road surface 1.

[0027] The upper surface of the base layer 8 is provided with strip-shaped protrusions, and grooves are formed between adjacent strip-shaped protrusions. The circulating water pipe 9 is arranged in the groove. The top of the strip-shaped protrusion is fixedly connected to the mounting plate 2, and the groove is filled with foam glue.

[0028] The present invention also provides a photovoltaic pavement, which is composed of a certain number of the above-mentioned photovoltaic pavement units.

[0029] The present invention also provides a method for cooling the pavement of the photovoltaic pavement, the steps of which are as follows: The upper layer preset temperature and the lower layer preset temperature are set in the control module 18; When the temperature measured by the upper temperature sensor 16 is greater than the upper preset temperature, the control module 18 controls the first water outlet of the water pump 12 to open, and the atomizing nozzle 6 sprays water mist between the power generation layer and the road surface layer 1. At the same time, the control module 18 controls the fan 7 to turn on, and the water mist evaporates and dissipates heat by blowing air; When the temperature measured by the lower layer temperature sensor 17 is greater than the lower layer preset temperature, the control module 18 controls the second water outlet of the water pump 12 to open, and water flows through the circulating water pipe 9 to dissipate heat to the bottom of the power generation layer.

[0030] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A photovoltaic pavement unit with a cooling function, comprising a road surface layer (1) and a power generation layer, characterized in that: There is a gap of a certain height between the road surface layer (1) and the power generation layer; a certain number of atomizing nozzles (6) and fans (7) are provided on the upper surface of the power generation layer; a base layer (8) is provided below the power generation layer; a water tank (13) is provided in the base layer (8); a water pump (12) is provided at the bottom of the water tank (13); the atomizing nozzle (6) is connected to the water pump (12) through a nozzle water inlet channel (11); an upper temperature sensor (16) is provided on the upper surface of the power generation layer; a control module (18) is provided in the base layer (8); the upper temperature sensor (16) is electrically connected to the control module (18); and the water pump (12) and the fan (7) are controlled by signals from the control module (18).

2. The photovoltaic pavement unit with cooling function according to claim 1 is characterized in that: The power generation layer and the road surface layer (1) are supported by a support frame (4), the support frame (4) is a "well" type frame, and air holes (5) are provided on the support frame (4).

3. The photovoltaic pavement unit with cooling function according to claim 2 is characterized in that: The power generation layer comprises a mounting plate (2), the support frame (4) divides the mounting plate (2) into a plurality of square power generation layer areas, the square power generation layer areas are equipped with solar panels (3), and the atomizing nozzle (6) is arranged at a corner of the square power generation layer area.

4. The photovoltaic pavement unit with cooling function according to claim 3 is characterized in that: A circulating water pipe (9) is provided below the power generation layer, and the water pump (12) is provided with a first water outlet and a second water outlet which are independent of each other, the first water outlet is connected to the nozzle water inlet (11), the second water outlet is connected to one end of the circulating water pipe (9) through the water pipe water inlet (10), and the other end of the circulating water pipe (9) is connected to the water tank (13) through the water pipe water outlet (15), and a lower layer temperature sensor (17) is provided below the power generation layer, and the lower layer temperature sensor (17) is electrically connected to the control module (18).

5. The photovoltaic pavement unit with cooling function according to claim 3 is characterized in that: A water injection port (14) is provided in a square area of ​​the power generation layer at a central position on the mounting plate (2), and the water injection port (14) is connected to the water tank (13).

6. The photovoltaic pavement unit with cooling function according to claim 5 is characterized in that: The support frame (4) divides the road surface (1) into a plurality of surface square areas, and the surface square area directly above the water injection port is a window.

7. The photovoltaic pavement unit with cooling function according to claim 6 is characterized in that: The four walls of the support frame corresponding to the water injection port (14) above are closed plates, and a filter screen (19) is provided at the window opening of the road surface layer (1).

8. The photovoltaic pavement unit with cooling function according to claim 4 is characterized in that: The upper surface of the base layer (8) is provided with strip-shaped protrusions, and grooves are formed between adjacent strip-shaped protrusions. The circulating water pipe (9) is arranged in the groove. The top of the strip-shaped protrusion is fixedly connected to the mounting plate (2), and the groove is filled with foam glue.

9. A photovoltaic pavement, characterized in that: It is composed of a certain number of photovoltaic pavement units with cooling function as described in any one of claims 3-8.

10. A road surface cooling method, characterized in that: Applied to the photovoltaic pavement as claimed in claim 9, the steps are as follows: Setting the upper layer preset temperature and the lower layer preset temperature in the control module (18); When the temperature measured by the upper layer temperature sensor (16) is greater than the upper layer preset temperature, the control module (18) controls the first water outlet of the water pump (12) to open, and the atomizing nozzle (6) sprays water mist between the power generation layer and the road surface layer (1). At the same time, the control module (18) controls the fan (7) to turn on, and the water mist evaporates and dissipates heat by blowing air; When the temperature measured by the lower layer temperature sensor (17) is greater than the lower layer preset temperature, the control module (18) controls the second water outlet of the water pump (12) to open, and water flows through the circulating water pipe (9) to dissipate heat at the bottom of the power generation layer.

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