Solar panel installation structure

Abstract

To provide a solar panel installation structure that is simple in structure and can be built at a low cost. [Solution] The double-sided solar panels 2 are supported vertically to the ground surface via a support column 1. The arms 13 of the support column 1, which is made of hat-shaped steel and erected vertically to the ground surface, are directly attached to the double-sided solar panels 2 using bolts and nuts 3.

Description

Technical Field

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[0001] The present invention relates to an installation structure of a solar panel (PV module), and more particularly to an installation structure of a solar panel that vertically supports the solar panel with respect to the ground surface via a support column.

Background Art

[0002] Conventionally, a solar panel having a working surface on one side used for power generation is usually installed in a state where the working surface is inclined southward in the Northern Hemisphere. In this case, it has been pointed out that the peak of the power output by converting solar radiation energy into electrical energy occurs around noon, and an excess power supply is likely to occur, imposing a load on the power supply grid.

[0003] To address this problem, in recent years, a bifacial solar panel (referred to as a "dual-sided power generation solar panel" in this specification) having working surfaces on both sides has been proposed and put into practical use, for example, by setting the working surfaces in the east-west direction and installing them vertically with respect to the ground surface (horizontal plane) via support columns (see, for example, Patent Documents 1 and 2).

[0004] The solar power generation devices disclosed in Patent Documents 1 and 2 had the advantage of leveling the power output by converting solar radiation energy into electrical energy and reducing the load imposed on the power supply grid.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] Incidentally, the photovoltaic power generation devices disclosed in Patent Documents 1 and 2 use a robust structure for the support columns, in order to vertically support the solar panels with respect to the ground surface (horizontal plane) via support columns, and in particular to ensure high stability against wind loads. However, this has resulted in the problem of high construction costs.

[0007] The present invention aims to provide a solar panel installation structure that is simple in structure and has low construction costs, while enjoying the advantages of using bifacial solar panels for photovoltaic power generation devices disclosed in Patent Documents 1 and 2. [Means for solving the problem]

[0008] To achieve the above objective, the solar panel installation structure of the present invention is a solar panel installation structure that supports a bifacial solar panel vertically to the ground surface via a support column, characterized in that the bifacial solar panel is directly attached to the arm of a support column made of hat-shaped steel, which is erected vertically to the ground surface, using bolts and nuts.

[0009] In this case, the support column may be made of a hat-shaped steel formed such that the angle between the web and the flange and the angle between the flange and the arm is 90°.

[0010] Furthermore, the support column can be made of a hat-shaped steel with a lip, which is formed by bending the ends of the arms on both sides.

[0011] Furthermore, the support columns may be made of bent molten Zn-Al alloy plated steel sheets or molten galvanized steel sheets.

[0012] Furthermore, the support columns can be connected at the lower end of the solar panels by horizontal members made of C-shaped steel.

[0013] Furthermore, the intermediate position of the solar panel can be directly attached to the upper end of the support column. [Effects of the Invention]

[0014] According to the solar panel installation structure of the present invention, the advantages of using bifacial solar panels can be enjoyed while the structure is simple and construction costs can be kept low. [Brief explanation of the drawing]

[0015] [Figure 1] An embodiment of a photovoltaic power generation system to which the installation structure of the present invention is applied is shown, where (a) is a plan view, (b) is a front view, and (c) is a right side view. [Figure 2] This is a front view of the support column used in the installation structure of the solar panels (this column is continuous only in the vertical direction). [Figure 3] This is a rear view of the support column. [Figure 4] This is a right side view of the support column. [Figure 5] This is a plan view of the support column. [Modes for carrying out the invention]

[0016] Hereinafter, embodiments of the solar panel installation structure of the present invention will be described based on the drawings.

[0017] Figures 1 to 5 show one embodiment of the installation structure of the solar panel according to the present invention. This solar panel installation structure supports a bifacial solar panel 2 vertically to the ground surface (horizontal plane) via a support column 1. The bifacial solar panel 2 is directly attached to the arm 13 of the support column 1, which is made of hat-shaped steel and erected vertically to the ground surface, using bolts and nuts 3.

[0018] The hat-shaped steel used for the support column 1 can preferably be a hat-shaped steel formed such that the angle formed by the web 11, the flange 12, and the flange 12 and the arm 13 is 90°, and more preferably, a hat-shaped steel with a lip 14 provided by bending the tip sides of the arms 13 on both sides to 90° can be used. Thereby, the strength of the support column 1, particularly the rigidity against bending, can be increased.

[0019] The specifications of this hat-shaped steel with a lip can be, for example, as follows. · Material and processing method A galvanized (Zn)-aluminum (Al) alloy (further adding trace amounts of magnesium (Mg) and nickel (Ni)) steel sheet (product number "SZAH400") or a galvanized steel sheet (product number "SGMH400") bent using a bending machine The galvanized Zn-Al alloy steel sheet and the galvanized steel sheet have high corrosion resistance and high durability even after bending. · Dimensions Thickness: 3.2 mm Length of the above-ground part: 2364 mm Length of the underground part: 1000 mm Length of the web 11: 75 mm Length of the flange 12: 130 mm Length of the arm 13: 37.5 mm Length of the lip 14: 20 mm

[0020] In this embodiment, the underground part of the support column 1 is buried in the concrete foundation 6, but any conventionally widely used method for fixing the support column, such as a method of fixing with anchor bolts, can be adopted.

[0021] When directly attaching the bifacial power generation type solar panel 2 to the arm 13 of the support column 1 with bolts and nuts 3, holes conforming to the bolts and nuts 3 to be used (M8 in this embodiment) are formed at predetermined positions on the arm 13 of the support column 1.

[0022] In this embodiment, the double-sided solar panels 2 are directly attached to the upper and lower parts of the arm 13 of the support column 1 using bolts and nuts 3. Then, the middle section of the solar panel 2 is directly attached to the upper end of the support column 1 using bolts and nuts 3, so that the upper part of the solar panel 2 (in this embodiment, length: 414 mm (18.2% of the total height of the solar panel 2)) is left free from the presence of the support column 1. This prevents large bending moments caused by external forces (wind loads) from being applied to support column 1.

[0023] The support columns 1 are connected to adjacent support columns 1 at the lower end of the solar panels 2 by directly attaching them with bolts and nuts 5 via horizontal members 4 made of C-shaped steel (in this embodiment, 100 × 50 × 15 × 1.6; steel of the same material as the support columns 1 can be used). Holes suitable for the bolts and nuts 3 to be used (M10 in this embodiment) are formed at predetermined positions on the arms 13 of the support column 1 and the web of the horizontal member 4.

[0024] For the bifacial solar panel 2, commercially available products such as bifacial solar panels manufactured by CANADIAN SOLAR or LUXEN SOLAR ENERGY can be used.

[0025] The solar panel installation structure of the present invention has been described above based on its embodiments. However, the present invention is not limited to the configuration described in the above embodiments, and its configuration can be modified as appropriate without departing from the spirit of the invention. [Industrial applicability]

[0026] The solar panel installation structure of the present invention is simple in structure and can be constructed at a low cost, making it suitable for use in installing solar panels that utilize bifacial solar power generation. [Explanation of Symbols]

[0027] 1 post 11 Web 12 flanges 13 Arms 14 Lip 3 Bolts and nuts 4 Horizontal members 5 Bolts and nuts 6. Concrete foundation

Claims

1. A solar panel installation structure for supporting bifacial solar panels vertically to the ground surface via support columns, characterized in that the bifacial solar panels are directly attached to the arms of support columns made of hat-shaped steel, which are erected vertically to the ground surface, using bolts and nuts.

2. The solar panel installation structure according to claim 1, characterized in that the support column is made of hat-shaped steel formed such that the angle between the web and the flange and the flange and the arm is 90°.

3. The solar panel installation structure according to claim 1 or 2, characterized in that the support column is made of a lipped hat-shaped steel having lips formed by bending the tips of the arms on both sides.

4. The solar panel installation structure according to claim 1 or 2, characterized in that the support column is made of a hot-dip Zn-Al alloy plated steel sheet or a hot-dip galvanized steel sheet that has been bent.

5. The solar panel installation structure according to claim 1 or 2, characterized in that the support column is connected at the lower end of the solar panel by a horizontal member made of C-shaped steel.

6. The solar panel installation structure according to claim 1 or 2, characterized in that the intermediate position of the solar panel is directly attached to the upper end position of the support column.

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