Photovoltaic power generation system

Abstract

This invention discloses a photovoltaic power generation system, including a composite base; photovoltaic modules rotatably mounted on the composite base at the bottom along the height direction; a cleaning mechanism located at the top of the photovoltaic modules along the height direction for cleaning and cooling the photovoltaic modules; a drive rod for rotating the photovoltaic modules, rotatably mounted on the top of the photovoltaic modules and used to drive the drive rod to slide and rotate the photovoltaic modules; and a second drive mechanism for driving the drive rod to move up and down. This photovoltaic power generation system improves power generation efficiency in five aspects: bifacial photovoltaic power generation, angle adjustment for solar tracking, reflective film for diffuse light utilization, photovoltaic cleaning, and photovoltaic cooling. Through the rotation of the two-way electric drive mechanism, the drive rod moves, thereby driving the rotation of multiple sets of photovoltaic modules, thus achieving tilt angle adjustment of the photovoltaic panels, realizing solar tracking, improving power generation efficiency, and possessing high promotional value.

Description

Technical Field

[0001] This invention relates to the field of solar photovoltaic technology, and more particularly to a photovoltaic power generation system. Background Technology

[0002] With the growth of global energy demand and the increasing awareness of environmental protection, photovoltaic power generation, as a clean and renewable energy source, has received increasing attention. However, the efficiency of photovoltaic power generation is still affected by a variety of factors, including solar radiation intensity, photovoltaic panel temperature, and the cleanliness of the photovoltaic panels.

[0003] In the existing process of collecting solar energy using photovoltaic panels, the panels are easily contaminated by dust due to the unpredictable outdoor environment. This dust buildup on the surface of the panels undoubtedly affects their ability to collect and utilize sunlight, thus reducing the efficiency of solar energy utilization. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this invention provides a photovoltaic power generation system that achieves cleaning and cooling of photovoltaic modules through a cleaning mechanism, thereby extending the service life of photovoltaic modules and reducing maintenance costs. At the same time, by rotating the photovoltaic modules to adjust the angle, solar tracking is achieved, thereby improving power generation efficiency.

[0005] To achieve the above objectives, the present invention provides a photovoltaic power generation system, comprising:

[0006] Composite base;

[0007] A photovoltaic module, which is rotatably mounted on the composite base along the bottom in the opposite direction of its height;

[0008] The cleaning mechanism includes a liquid-cooled through-type long rod located at the top of each group of photovoltaic modules along the height direction and fixedly connected to each group of photovoltaic modules, and a spray head located on the liquid-cooled through-type long rod. The end of the liquid-cooled through-type long rod along the length direction is connected to a water tank.

[0009] A drive rod for rotating the photovoltaic module, the drive rod being perpendicular to the liquid-cooled through-type long rod and being rotatably mounted on the side of the liquid-cooled through-type long rod close to the photovoltaic module along the height direction of the photovoltaic module;

[0010] The first driving mechanism includes a vertical slide rail disposed on one side of the photovoltaic module for the driving rod to slide along the height direction of the photovoltaic module;

[0011] The second drive mechanism includes a horizontal slide rail located on one side of the photovoltaic module for the drive rod to slide along a direction perpendicular to the height of the photovoltaic module.

[0012] Preferably, a first rotating shaft is rotatably mounted on the composite base, and the photovoltaic module is fixedly connected to the first rotating shaft.

[0013] Preferably, the photovoltaic modules are arranged in multiple groups along the length of the drive rod, and the multiple groups of photovoltaic modules are interconnected by the drive rod, and a telescopic reflective film is telescopically installed between two adjacent groups of photovoltaic modules.

[0014] Preferably, a second rotating shaft is rotatably mounted on the composite base parallel to the first rotating shaft, and a sleeve for winding the telescopic reflective film is coaxially fixedly mounted on the outer side of the second rotating shaft, and one end of the telescopic reflective film relative to the sleeve is fixedly connected to the bottom of the adjacent photovoltaic module along the height direction.

[0015] Preferably, the spray head is provided on both the side of the liquid-cooled through-type long rod near the photovoltaic module and the side away from the photovoltaic module, and the end of the liquid-cooled through-type long rod along its length is connected to the water tank through a water pipe.

[0016] Preferably, a base is provided on one side of the photovoltaic module, and a horizontal slider is fixedly installed at the bottom of the vertical slide rail along the height direction. The horizontal slide rail is opened on the base in a direction perpendicular to the photovoltaic module, and the horizontal slider slides on the horizontal slide rail.

[0017] Preferably, a vertical slider is slidably mounted on the vertical slide rail along the height direction, and one end of the drive rod relative to the photovoltaic module along the length direction is fixedly connected to the vertical slider.

[0018] Preferably, a first pin is fixedly installed on the side of the liquid-cooled through-type long rod near the photovoltaic module via a connector, a rotating component is rotatably installed on the first pin, a second pin is rotatably installed on the rotating component relative to one end of the first pin, and the end of the drive rod relative to the vertical slide rail is inserted into the second pin.

[0019] By adopting the above technical solution, the present invention has the following beneficial effects:

[0020] 1) Vertical installation of photovoltaic modules eliminates the need for complex support systems and reduces maintenance costs.

[0021] 2) Photovoltaic modules use double-sided photovoltaic panels and stretchable reflective films to reflect diffuse light onto the photovoltaic panels to generate electricity, thereby improving power generation efficiency.

[0022] 3) The top of the photovoltaic module is driven by a drive rod to achieve solar tracking, enabling all-weather utilization of sunlight and improving power generation efficiency. At the same time, the drive rod also allows the photovoltaic panel to lie flat, preventing cracks or microcracks from appearing on the photovoltaic panel, thus extending its service life and reducing power generation efficiency loss.

[0023] 4) Spray heads are installed on the top of the photovoltaic modules, and spray heads are also installed on both the top and bottom sides. This can achieve the cooling and cleaning of the photovoltaic panels, which is cost-effective and improves power generation efficiency. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a three-dimensional structural diagram of the photovoltaic power generation system of the present invention.

[0026] Figure 2 This is a front view structural diagram of the photovoltaic power generation system of the present invention.

[0027] Figure 3 This is a first side view structural schematic diagram of the photovoltaic power generation system of the present invention.

[0028] Figure 4 This is a second side view of the photovoltaic power generation system of the present invention.

[0029] Figure 5 This is a top view schematic diagram of the photovoltaic power generation system of the present invention.

[0030] Figure 6 yes Figure 1 Enlarged view of the structure at point A in the middle.

[0031] Figure 7 yes Figure 1 Enlarged view of the structure at point B in the middle.

[0032] Figure 8 This is a three-dimensional structural diagram of the composite base in this invention.

[0033] Figure 9 This is a front view schematic diagram of the composite base in this invention.

[0034] Figure 10 This is a three-dimensional structural diagram of the adaptive steering mechanism in this invention.

[0035] Figure 11 This is a front view schematic diagram of the adaptive steering mechanism in this invention.

[0036] Figure 12 This is a schematic diagram of the side structure of the adaptive steering mechanism in this invention.

[0037] Figure 13This is a three-dimensional structural diagram of the two-way electric drive mechanism in this invention.

[0038] Figure 14 This is a front view structural schematic diagram of the two-way electric drive mechanism in this invention.

[0039] Figure 15 yes Figure 13 Enlarged view of the structure at point C.

[0040] The correspondence between the numbers in the attached diagram is as follows:

[0041] 1-Photovoltaic module; 2-Supporting mechanism; 21-Composite base; 22-First rotating shaft; 23-Second rotating shaft; 24-Sleeve; 25-First through hole; 26-Second through hole; 3-Extendable reflective film; 4-Water tank; 5-Water pipe; 6-Two-way electric drive mechanism; 61-Base; 62-Horizontal slide rail; 63-Horizontal slider; 64-Vertical slide rail; 65-Vertical slider; 7-Liquid-cooled through-type long rod; 8-Drive adaptive steering mechanism; 81-Connector; 82-Rotating component; 83-First pin; 84-Second pin; 85-Third through hole; 9-Drive rod. Detailed Implementation

[0042] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding the present invention, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0043] The technical problem this invention aims to solve is that in the existing process of collecting solar energy using photovoltaic panels, the panels are easily contaminated by dust due to the unpredictable outdoor environment, leading to dirt buildup on the panel surface. This undoubtedly affects the collection and utilization of sunlight, thus reducing the efficiency of solar energy utilization. This invention provides a new, highly efficient photovoltaic power generation system that improves the efficiency, reliability, and stability of photovoltaic power generation in five aspects: double-sided photovoltaic power generation, angle adjustment for solar tracking, stretchable reflective film for diffuse light utilization, photovoltaic panel cleaning, and photovoltaic panel cooling. In windy weather, the photovoltaic panels can be laid down using a drive rod to reduce the wind-exposed area. Furthermore, because they are close to the ground or object surface, the wind speed is lower, preventing cracks or microcracks in the photovoltaic panels, extending their service life, reducing power generation efficiency loss, lowering maintenance costs, and minimizing environmental impact.

[0044] Please see Figures 1 to 15As shown, the present invention provides a photovoltaic power generation system, including a support mechanism 2, a photovoltaic module 1, a cleaning mechanism, a drive rod 9 for rotating the photovoltaic module, a two-way electric drive mechanism 6, and a drive adaptive steering mechanism 8. The support mechanism 2 includes a composite base 21 disposed at the bottom of the photovoltaic module 1 along the height direction. The photovoltaic module 1 is rotatably mounted on the composite base 21 with adjustable angle. Figure 6 , Figure 8 and Figure 9 As shown, a first rotating shaft 22 is rotatably mounted on the composite base 21, and the photovoltaic module 1 is fixedly connected to the first rotating shaft 22. It should be noted that the driving rod 9, the two-way driving mechanism 6 and the adaptive steering mechanism 8 cooperate with each other to drive the photovoltaic module 1 to rotate so as to adjust the angle according to the direction of solar irradiation.

[0045] Furthermore, in this embodiment, the photovoltaic module 1 is provided in multiple groups, and the multiple groups of photovoltaic modules 1 are interconnected by drive rods 9. A telescopic reflective film 3 is telescopically installed between adjacent groups of photovoltaic modules 1, such as... Figure 1 , Figure 6 , Figure 8 and Figure 9 As shown, a second rotating shaft 23 is rotatably mounted on the composite base 21 parallel to the first rotating shaft 22. A sleeve 24 for winding a telescopic reflective film 3 is coaxially fixedly mounted on the outer side of the second rotating shaft 23. One end of the telescopic reflective film 3 relative to the sleeve 24 is fixedly connected to the bottom of the adjacent photovoltaic module along the height direction. Preferably, the composite base 21 has a first through hole 25 and a second through hole 26 corresponding to the first rotating shaft 22 and the second rotating shaft 23, respectively, for the first rotating shaft 22 and the second rotating shaft 23 to be inserted and rotated. It should be noted that in this embodiment, the two ends of the second rotating shaft 23 are rotatably mounted on the composite base 21. By setting the sleeve 24, which is equipped with a spiral spring, the telescopic reflective film 3 can automatically expand and contract to adapt to the length change as the angle of the photovoltaic panel changes, and reflect diffuse light onto the photovoltaic panel to generate electricity, which can improve the photovoltaic panel's power generation efficiency by about 20%.

[0046] Please see Figures 1 to 5As shown, the cleaning mechanism includes a liquid-cooled through-type long rod 7 fixedly connected to the top of each group of photovoltaic modules 1 along the height direction, and spray heads provided on the liquid-cooled through-type long rod 7. Preferably, the liquid-cooled through-type long rod 7 is provided with spray heads on both the side close to the photovoltaic module 1 and the side away from the photovoltaic module 1. The end of the liquid-cooled through-type long rod 7 along the length direction is connected to a water tank 4 through a water pipe 5. Water can be supplied to the liquid-cooled through-type long rod 7 through the water tank 4. The spray heads on the upper surface of the liquid-cooled through-type long rod 7 atomize the water and spray it out, intermittently creating a local microenvironment. The water mist combined with natural wind plays a role in cooling the photovoltaic panels. The spray heads on the lower surface spray water at the photovoltaic panels. Generally, the operation is carried out at night. Since the photovoltaic panels are vertical at this time, the dust and dirt on the photovoltaic panels can be easily washed away.

[0047] Furthermore, such as Figure 1 , Figures 13 to 15 As shown, the drive rod 9 is perpendicular to the liquid-cooled through-type long rod 7 and is rotatably mounted on the side of the liquid-cooled through-type long rod 7 near the photovoltaic module 1 along the height direction of the photovoltaic module 1.

[0048] Furthermore, in this embodiment, the bidirectional electric drive mechanism 6 includes a first drive mechanism and a second drive mechanism. The first drive mechanism includes a vertical slide rail 64 disposed on one side of the photovoltaic module for the drive rod 9 to slide along the height direction of the photovoltaic module 1. The second drive mechanism includes a horizontal slide rail 62 disposed on one side of the photovoltaic module 1 for the drive rod 9 to slide along a direction perpendicular to the height direction of the photovoltaic module 1. Figure 1 As shown, a base 61 is provided on one side of the photovoltaic module 1, and a horizontal slider 63 is fixedly installed at the bottom of the vertical slide rail 64 along the height direction. The horizontal slide rail 62 is opened on the base 61 in a direction perpendicular to the photovoltaic module 1, and the horizontal slider 63 is slidably mounted on the horizontal slide rail 62. Preferably, a vertical slider 65 is slidably installed on the vertical slide rail 64 along the height direction, and the drive rod 9 is fixedly connected to the vertical slider 65 at one end relative to the photovoltaic module 1 along the length direction.

[0049] Please see Figure 1 , Figure 7 , Figures 10 to 12 As shown, the drive adaptive mechanism 8 includes a rotating component 82 rotatably mounted on the side of the liquid-cooled through-type long rod 7 near the photovoltaic module 1, and a connecting component 81 fixedly mounted on the side of the liquid-cooled through-type long rod 7 near the photovoltaic module 1. A first pin 83 parallel to the liquid-cooled through-type long rod 7 is inserted on the side of the connecting component 81 near the photovoltaic module 1, and the rotating component 82 is rotatably connected to the first pin 83.

[0050] Furthermore, two rotating parts 82 are rotatably mounted on both sides of the connector 81 at both ends of the first pin 83 along the length direction. The two rotating parts 82 are inserted into and rotatably mounted with a second pin 84 relative to one end of the first pin 83. The drive rod 9 is inserted into the second pin 84 at one end relative to the vertical slide rail 64. A third through hole 85 is opened on the second pin 84 corresponding to the drive rod 9 for the drive rod 9 to be inserted.

[0051] By setting up a two-way electric drive mechanism 6, the sliding of the horizontal slider 63 and the vertical slider 65 of the two-way electric drive mechanism 6 drives the drive rod 9 to move, thereby driving the rotation of multiple sets of photovoltaic modules 1, thereby realizing the tilt angle adjustment of the photovoltaic panel, realizing solar tracking, and utilizing sunlight all day long. It can make full use of sunlight to generate electricity. The adjustment angle range is 180°. The solar tracking angle adjustment algorithm can be built into the two-way electric drive mechanism 6 to realize automatic solar tracking.

[0052] Preferably, in this embodiment, the photovoltaic module array uses bifacial photovoltaic panels installed in a north-south orientation. When the photovoltaic panel is vertical, its two sides face east and west respectively (in the Northern Hemisphere, it can be slightly angled south, depending on the location of the photovoltaic power station). When the sun rises in the east in the morning, the photovoltaic panel is at a vertical angle. As the sun rises higher, the photovoltaic panel continuously adjusts its angle to ensure that sunlight shines vertically on it until it is horizontal. At this point, the angle of the photovoltaic panel needs to be adjusted 180°. As the sun sets, the photovoltaic panel continuously adjusts its angle until it returns to a vertical state when the sun sets.

[0053] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and these variations still fall within the protection scope of the present invention.

Claims

1. A photovoltaic power generation system, characterized in that, include: Composite base; A photovoltaic module, wherein the photovoltaic module is rotatably mounted on the composite base along its bottom in the height direction; The cleaning mechanism includes a liquid-cooled through-type long rod located at the top of each group of photovoltaic modules along the height direction and fixedly connected to each group of photovoltaic modules, and a spray head located on the liquid-cooled through-type long rod. A water tank is connected to the end of the liquid-cooled through-type long rod along its length direction. A drive rod for rotating the photovoltaic module is provided. The drive rod is perpendicular to the liquid-cooled through-type long rod and is rotatably mounted on the side of the liquid-cooled through-type long rod close to the photovoltaic module along the height direction of the photovoltaic module. Multiple sets of photovoltaic modules are provided along the length direction of the drive rod. The multiple sets of photovoltaic modules are interconnected through the drive rod, and a telescopic reflective film is telescopically installed between two adjacent sets of photovoltaic modules. The first driving mechanism includes a vertical slide rail disposed on one side of the photovoltaic module for the driving rod to slide along the height direction of the photovoltaic module; The second drive mechanism includes a horizontal slide rail located on one side of the photovoltaic module for the drive rod to slide along a direction perpendicular to the height of the photovoltaic module.

2. The photovoltaic power generation system as described in claim 1, characterized in that: A first rotating shaft is rotatably mounted on the composite base, and the photovoltaic module is fixedly connected to the first rotating shaft.

3. The photovoltaic power generation system as described in claim 2, characterized in that: A second rotating shaft is rotatably mounted on the composite base parallel to the first rotating shaft. A sleeve for winding the telescopic reflective film is coaxially fixedly mounted on the outer side of the second rotating shaft, and one end of the telescopic reflective film relative to the sleeve is fixedly connected to the bottom of the adjacent photovoltaic module along the height direction.

4. The photovoltaic power generation system as described in claim 1, characterized in that: The liquid-cooled through-type long rod is equipped with spray heads on both the side near the photovoltaic module and the side away from the photovoltaic module, and the end of the liquid-cooled through-type long rod along its length is connected to the water tank through a water pipe.

5. The photovoltaic power generation system as described in claim 1, characterized in that: A base is provided on one side of the photovoltaic module, and a horizontal slider is fixedly installed at the bottom of the vertical slide rail along the height direction. The horizontal slide rail is opened on the base in a direction perpendicular to the photovoltaic module, and the horizontal slider slides on the horizontal slide rail.

6. The photovoltaic power generation system as described in claim 1, characterized in that: A vertical slider is slidably mounted on the vertical slide rail along the height direction, and the end of the drive rod relative to the photovoltaic module along the length direction is fixedly connected to the vertical slider.

7. The photovoltaic power generation system as described in claim 1, characterized in that: The liquid-cooled through-type long rod is fixedly installed with a first pin on the side near the photovoltaic module via a connector. A rotating component is rotatably installed on the first pin. A second pin is rotatably installed on one end of the rotating component relative to the first pin. The end of the drive rod relative to the vertical slide rail is inserted into the second pin.

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