Photovoltaic power generation device

Abstract

The utility model discloses a photovoltaic power generation device, relates to the technical field of solar photovoltaic power generation, and solves the problems that the surface of photovoltaic glass is usually coated with an anti-reflection film, the surface of the anti-reflection film is of a rough structure, accumulated dust falling on the surface of the photovoltaic glass is easy to combine with condensation, and the condensation is delayed on the surface of the anti-reflection film and is difficult to flow down. The device specifically comprises a frame, photovoltaic glass, a battery piece and a back plate, a tray is arranged on the side, close to the back plate, of the lower end of the frame, and a through hole is formed in the bottom face of the tray and communicated with a connecting port downwards; a group of fishbone-shaped water guide grooves are formed in one surface, far away from the photovoltaic glass, of the back plate, each water guide groove comprises a vertical main groove and a plurality of inclined branch grooves, and a water tank is arranged below the frame and is communicated with the connecting port; the frame is provided with a support, the support is driven by a motor to enable the frame to rotate so as to change the orientation of the frame, and the condensation collecting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of solar photovoltaic power generation, in particular to a photovoltaic power generation device. Background Art

[0002] On nights with high humidity and large temperature differences between day and night, a large amount of dew will condense on the surface of photovoltaic glass. Existing technologies have been used to collect and utilize the condensation on the surface of photovoltaic glass, but the collection effect is not good. The reason is that in recent years, in order to improve the transmittance of sunlight, the surface of photovoltaic glass is usually coated with an anti-reflection film. The surface of the anti-reflection film has a rough structure. The dust accumulated on the surface of the photovoltaic glass is easily combined with the condensation, causing the condensation to stagnate on the surface of the anti-reflection film and difficult to flow down, resulting in low collection efficiency. Utility Model Content

[0003] The purpose of the utility model is to provide a photovoltaic power generation device to solve the following technical problems: the surface of photovoltaic glass is usually coated with an antireflection film, and the surface of the antireflection film has a rough structure. The dust and condensation that fall on the surface of the photovoltaic glass are easily combined, causing the condensation to stagnate on the surface of the antireflection film and difficult to flow down, resulting in low collection efficiency.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] A photovoltaic power generation device includes a frame and photovoltaic glass, solar cells and a backboard installed in the frame. A tray is provided on the side of the lower end of the frame close to the backboard, and a through hole is provided on the bottom surface of the tray, which is downwardly connected to a connection port; a group of water guide grooves are provided on the side of the backboard away from the photovoltaic glass, and the water guide grooves are fishbone-shaped, including a vertical main groove and several inclined branch grooves, and the branch grooves are symmetrically distributed with the main groove as the axis; a water tank is provided below the frame and is connected to the connection port; a bracket is provided on the frame, and the bracket is driven by a motor to rotate the frame to change the orientation of the frame.

[0006] As a further solution of the present invention: there are at least two groups of water guide grooves, and the branch grooves of adjacent water guide grooves are staggered in the vertical direction. The cross-sections of the main groove and the branch groove are both small semicircular, and the main groove has a larger radius than the branch groove.

[0007] As a further solution of the present invention: the back panel is glass, the main groove and the branch groove are formed on the surface of the glass, and the surfaces of the main groove and the branch groove are coated with a hydrophobic coating.

[0008] As a further solution of the present invention: the water tank is connected to the connecting port through a retractable hose.

[0009] As a further solution of the present invention: the angle α between the bottom surface of the tray and the back plate surface is 120° to 150°.

[0010] Beneficial effects of the utility model:

[0011] This utility model improves the existing technology of collecting condensation from the photovoltaic glass surface to the backsheet surface by providing water guide grooves on the glass backsheet surface and coating the main grooves and branch grooves with a hydrophobic coating. This not only improves the collection efficiency but also recycles natural water resources. The device has a simple structure, is easy to maintain, and is low-cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below with reference to the accompanying drawings.

[0013] Figure 1 This is a schematic structural diagram of a photovoltaic power generation device of the present utility model;

[0014] Figure 2 yes Figure 1 AA view;

[0015] Figure 3 yes Figure 2 BB view;

[0016] Figure 4 This is a schematic diagram of a photovoltaic power generation device of the present invention in a condensation collection state.

[0017] In the figure: 1. frame; 2. photovoltaic glass; 3. battery cell; 4. back plate; 5. tray; 6. water guide groove; 7. water tank; 50. through hole; 51. connection port; 61. main groove; 62. branch groove; 71. retractable hose. DETAILED DESCRIPTION

[0018] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] like Figure 1 、 Figure 2 、 Figure 3As shown, a photovoltaic power generation device includes a frame 1 and photovoltaic glass 2, solar cells 3, and a back sheet 4 installed within the frame 1. A tray 5 is provided at the lower end of the frame 1 near the back sheet 4. A through hole 50 is provided on the bottom surface of the tray 5, and the through hole 50 is downwardly connected to a connection port 51. A group of water guide grooves 6 are provided on the side of the back sheet 4 away from the photovoltaic glass 2. The water guide grooves 6 are fishbone-shaped and include a vertical main groove 61 and several inclined branch grooves 62. The branch grooves 62 are symmetrically distributed about the main groove 61. A water tank 7 is provided below the frame 1 and is connected to the connection port 51 via a retractable hose 71.

[0020] like Figure 2 、 Figure 3 As shown, there are at least two groups of water guide grooves 6. In this embodiment, there are two groups of water guide grooves, and the branch grooves of adjacent water guide grooves are staggered in the vertical direction. The cross-sections of the main grooves 61 and the branch grooves 62 are both small semicircular, and the main grooves have a larger radius than the branch grooves.

[0021] In this embodiment, the backplane is made of glass, and the main grooves and the branch grooves formed on the glass surface are coated with a hydrophobic coating. The hydrophobic coating is a prior art coating material, and is typically a fluorosilane compound.

[0022] The frame 1 is provided with a bracket, which is driven by a motor to rotate the frame to change the orientation of the frame 1. The bracket, motor (not shown) and control technology thereof can all be obtained from existing technologies.

[0023] The above-mentioned method for using a photovoltaic power generation device preferably comprises the following steps:

[0024] S1. Power generation. From sunrise to sunset, the photovoltaic glass 2 faces the sky and tracks the sun.

[0025] S2. Collect condensation. After sunset, the frame rotates so that the backboard 4 faces the sky. Dew condenses on the backboard surface and is guided by the water channel 6 into the tray 5. Then, it enters the water tank 7 through the through hole 50, the connection port 51, and the retractable hose 71.

[0026] S3: Power generation. Before sunrise, the frame rotates so that the photovoltaic glass 2 faces the sky, and the process repeats from step S1.

[0027] In the above steps, the back plate 4 made of glass material has high hydrophilicity, and dew is easy to condense on the surface. Then, under the action of gravity, it first flows to the branch groove 62 and then gathers into the main groove 61. The surface of the main groove 61 and the branch groove 62 is coated with a hydrophobic coating, which allows the condensation to flow from the branch groove into the main groove without delay and quickly flow to the tray. Preferably, Figure 4As shown, the angle α between the bottom surface of the tray 5 and the surface of the back sheet 4 is 120° to 150°. When the bottom surface of the tray 5 is horizontal, it is conducive to fully collecting water in the tray. Of course, during the above steps, rainwater that falls on the back sheet surface at night can also be collected in the water tank. During the above cycle, the surface of the photovoltaic glass can also be cleaned by pumping water from the water tank using the collected condensation and rainwater, depending on the cleanliness of the photovoltaic glass surface. The cleaning device can be obtained from existing technologies.

[0028] The above describes an embodiment of the present invention in detail. However, the above content is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent application of the present invention.

Claims

1. A photovoltaic power generation device, comprising a frame (1) and photovoltaic glass (2), a cell (3) and a back plate (4) installed in the frame (1), characterized in that: A tray (5) is provided on the side of the lower end of the frame (1) close to the back plate (4), and a through hole (50) is provided on the bottom surface of the tray (5), and the through hole (50) is downwardly connected to a connection port (51); a group of water guide grooves (6) are provided on the side of the back plate (4) away from the photovoltaic glass (2), and the water guide grooves (6) are fishbone-shaped, including a vertical main groove (61) and a plurality of inclined branch grooves (62), and the branch grooves (62) are symmetrically distributed with the main groove (61) as the axis; a water tank (7) is provided below the frame (1) and is connected to the connection port (51); a bracket is provided on the frame (1), and the bracket is driven by a motor to rotate the frame (1) to change the direction of the frame (1).

2. A photovoltaic power generation device according to claim 1, characterized in that: There are at least two groups of water guide grooves (6), and the branch grooves (62) of adjacent water guide grooves (6) are staggered in the vertical direction. The cross-sections of the main groove (61) and the branch groove (62) are both small semicircular, and the main groove (61) has a larger radius than the branch groove (62).

3. A photovoltaic power generation device according to claim 1 or 2, characterized in that: The back plate (4) is made of glass, and the main groove (61) and the branch groove (62) are formed on the surface of the glass, and the surfaces of the main groove (61) and the branch groove (62) are both coated with a hydrophobic coating.

4. A photovoltaic power generation device according to claim 1, characterized in that: The water tank (7) is connected to the connecting port (51) via a telescopic hose (71).

5. A photovoltaic power generation device according to claim 1, characterized in that: The included angle α between the bottom surface of the tray (5) and the surface of the back plate (4) is 120° to 150°.

Images