JP5966855B2 - Installation structure of solar cell module - Google Patents

Description

  The present invention relates to an installation structure for a solar cell module, and more particularly to an installation structure for a solar cell module that can reduce material costs and further reduce construction costs.

  A solar cell module is a rectangular panel having a large number of solar cells (hereinafter abbreviated as “cells”) that convert light into electric power by the photovoltaic effect on a sheet-like substrate. However, for example, in the case of a rectangular solar cell module of about 900 mm × 1600 mm, the weight is about 10 to 30 kg. Therefore, when installing a solar cell module, a structure that can withstand its own weight and wind pressure is required.

  As the installation structure of the solar cell module, for example, a concrete base block reinforced with reinforcing bars is placed on the ground, a metal base is anchored to the upper surface of the base block, and the weight of the base block is designed to be sufficiently large By doing so, the structure which made the installation area of a basic block smaller than the projection area of a solar cell module, and did not increase the occupation area of one solar cell module is disclosed (refer patent document 1).

Japanese Patent Application Laid-Open No. 2012-160764

  By the way, in the above installation structure, since it is necessary to manufacture beforehand the foundation block in which the anchor bolt for anchoring a base is embedded, there exists a problem that it is difficult to reduce the manufacturing cost of a foundation part. In addition, since a metal frame having an integral frame structure is used, there is a problem that the manufacturing cost of the frame cannot be reduced.

  The present invention has been made in view of the above circumstances, and an object of the present invention is an installation structure for installing a solar cell module 1 having a rectangular planar shape in plan view, which can reduce the material cost and perform the construction. The object is to provide a solar cell module installation structure that can further reduce the cost.

  In order to solve the above-mentioned problems, in the present invention, a base portion is formed of a long concrete molded body having a flat bottom surface and two parallel side surfaces, and a metal frame for supporting the solar cell module is used as a metal frame portion. While using a pair of frames of the same structure with different thicknesses, these frames are mounted on the upper end of the foundation part with the two side surfaces of the foundation part sandwiched between the lower ends of the pair of pillars arranged in each frame. Each frame was fixed by tightening a bolt screwed to the part.

  That is, the gist of the present invention is an installation structure for installing a panel-shaped solar cell module having a rectangular planar shape, and is attached to a concrete base portion arranged on the ground and an upper portion of the base portion. The base part is composed of an elongated molded body having a flat bottom surface and two parallel side surfaces, and the frame part is one of the base parts in the longitudinal direction. A frame on the near side that is attached to the end and supports one short side of the back side of the solar cell module, and the other short side of the back of the solar cell module that is attached to the other end in the longitudinal direction of the base part Each frame includes a beam spanning the upper ends of a pair of struts arranged at a separation distance corresponding to the width of the base portion, and predetermined from the lower ends of these struts. height The frame on the rear side has a structure in which the supporting column is higher than the frame on the near side, and each frame has two parts of the base portion by the lower end side of the pair of supporting columns. The solar cell module installation structure is characterized in that the solar cell module is mounted on the upper end of the base portion with the side surface sandwiched, and is fixed to the base portion with a bolt screwed to the lower end portion of the support column.

  According to the installation structure of the solar cell module according to the present invention, the base portion is composed of an elongated concrete molded body, the frame portion is composed of a pair of frames having an equivalent structure, and each frame is on the upper end of the base portion. Since it has a mounted structure and can be installed more easily, material costs can be reduced and construction costs can be further reduced. Therefore, the present invention is suitable for a so-called mega solar that generates power of 1 MW or more.

It is an expansion | deployment perspective view which shows the component in the installation structure of the solar cell module which concerns on this invention. It is a perspective view which shows the engagement relationship of the foundation part and frame part in the installation structure of the solar cell module which concerns on this invention.

  An embodiment of a solar cell module installation structure (hereinafter abbreviated as “installation structure”) according to the present invention will be described with reference to the drawings. As shown in FIG. 1, the installation structure of the present invention is an installation structure for installing a panel-shaped solar cell module (hereinafter abbreviated as “module”) 1 having a rectangular planar shape, and is disposed on the ground. The base portion 2 is made of concrete, and a metal frame portion that is attached to the upper portion of the base portion and supports the module 1.

The module 1 is configured by arranging a large number of solar cells on the surface of a rectangular sheet-like substrate, and reinforcing the outer peripheral portion of the substrate with a metal frame. As the photovoltaic cell, various known cells such as various crystalline silicon type and amorphous silicon type silicon cells, InGaAs, GaAs type, CIS type, Cu ₂ ZnSnS ₄ (CZTS), CdTe-CdS type, etc. Examples include various compound cells and organic cells using organic compounds in the photoelectric conversion layer.

  Usually, one cell is configured by laminating a first electrode, a photoelectric conversion layer, a second electrode, and a transparent protective layer on the surface of a substrate. In one module 1, about 10 to 100 cells as described above are arranged on the substrate surface, and a first electrode of one cell and a second electrode of a cell adjacent thereto are sequentially connected in series. ing. The module 1 is configured by insulating and sealing cells by laminating a resin on the surface. The laminated structure in the module 1 is configured, for example, by sequentially laminating insulating material / sealing material / cell / sealing material / protective film on the surface of the substrate.

  As the insulating material, insulating materials made of thermoplastic olefins such as polyester, polyvinyl fluoride, and various plastic films are used. As the sealing material, for example, ethylene vinyl acetate copolymer (EVA), ethylene / acrylic acid ester copolymer, silicone resin, tetrafluoroethylene / hexafluoropropylene / vinylidene fluoride copolymer, ionomer, etc. are used. . As the protective film, a thermoplastic fluororesin (ETFE) such as a copolymer of tetrafluoroethylene and ethylene is used.

  The module 1 is usually formed in a rectangular panel shape from the viewpoint of workability. The external dimensions of the module 1 are, for example, about 600 to 1200 mm in width, about 1000 to 2000 mm in length, and about 15 to 50 mm in thickness at the outer peripheral frame portion. Although not shown, a terminal box (junction box) is attached to the back surface of the module 1 and houses terminals connected to each cell and attached with a pair of cables on the anode side and cathode side.

  In the installation structure of the present invention, a gantry is constituted by a concrete base portion 2 and a metal frame portion that supports the module 1. The base part 2 is comprised by the elongate molded object, and is comprised by the molded object provided with the flat bottom face and two parallel side surfaces along the longitudinal direction of the said base part. Such a molded body may be formed as a rectangular parallelepiped block by placing concrete on a mold, but it is preferable to use an existing concrete molded product from the viewpoint of reducing material costs.

  Specifically, for example, the base portion 2 is configured by a U-shaped side groove having a U-shaped cross section orthogonal to the longitudinal method. The U-shaped side groove is a concrete molded product for the side groove defined in JIS A 5372. Depending on the arrangement of the lid when used as a normal side groove, the “top lid type U-shaped side groove” and “falling lid type U-shaped side groove” However, any type of side groove can be used in the present invention. Preferably, as shown in FIG. 1, a falling lid type U-shaped side groove is preferable from the fixing structure of the frames 3A and 3B described later. The falling lid type U-shaped side groove has a structure in which the upper end portion of the U-shaped section bulges outward, and the bulging outer edge portion 21 is a latching portion of the bolt 42 of the column 31 of the frames 3A and 3B described later. Can be used as

  As said U-shaped side groove which comprises the base part 2, a width | variety (distance between two side surfaces) is about 200-400 mm, height is about 300-600 mm, and length is about 1000-2000 mm.

  On the other hand, as shown in FIG. 1, the frame part is attached to one end part in the longitudinal direction of the base part 2 (the end part on the lower side in the figure) and supports one short side part side of the back surface of the module 1. The frame 3A on the near side to be mounted and the frame on the rear side that is attached to the other end in the longitudinal direction of the base portion 2 (the end on the upper side in the figure) and supports the other short side of the back of the module 1 3B.

  The frames 3A and 3B can be formed of various rod-shaped members such as metal square pipes. However, from the viewpoint of reducing material costs, the frames 3A and 3B are usually configured by combining L-shaped steel except for the brace 34 described later. The Each of these frames 3 </ b> A and 3 </ b> B has a structure in which a beam 32 is bridged between the upper ends of a pair of columns 31, and a hanging bar 33 is bridged at a predetermined height from the lower ends of these columns 31. Further, in order to reinforce the frame structure of the column 31, the beam 32, and the hanging bar 33, in the frames 3 </ b> A and 3 </ b> B, a strip-shaped steel material extends from each end of the hanging bar 33 to the vicinity of each end of the beam 32. A brace 34 is attached.

  In the frames 3 </ b> A and 3 </ b> B, the beam 32 is a horizontal member for receiving and fastening the module 1, and the hanging bar 33 is a horizontal member for hooking the frame to the base portion 2. In addition, the connection part of the support | pillar 31, the beam 32, the latching bar 33, and the bracing 34 is fixed by a volt | bolt or spot welding.

  In the frames 3 </ b> A and 3 </ b> B, the spacing between the support columns 31 and 31 is set to about 250 to 500 mm according to the width of the base portion 2, and the length of the beam 32 is set to about 650 to 1250 mm according to the width of the module 1. The height from the lower end of the column 31 to the hanging bar 33 is about 50 to 100 mm. Moreover, in order to screw the bolt 42 mentioned later into the lower end part of each support | pillar 31, the hole for bolt insertion is opened and the nut 41 is attached to the said hole by welding.

  In the installation structure of the present invention, from the viewpoint of increasing the amount of received light, as shown in FIG. 2, the module 1 is supported in an inclined state. Is configured high. For example, the height of the column 31 of the front frame 3A is set to about 200 to 300 mm, and the height of the column 31 of the rear frame 3B is set to about 300 to 600 mm. Thereby, the module 1 can be attached in a state of being inclined at a predetermined inclination angle.

  The inclination angle of the module 1 is set so that the angle formed between the back surface of the module 1 and the ground surface is 5 to 30 °. Usually, it is set to 5 to 20 °, preferably about 10 ° in the case of a non-snowy region, and 20 to 30 ° in the case of a snowy region. In order to correspond to the inclination angle of the module 1, the beam 32 of the front side frame 3 </ b> A is usually processed in advance so that the inner angle is an acute angle, and the beam 32 of the rear side frame 3 </ b> B is preliminarily set to an obtuse angle. It is processed to become.

  As described above, in the installation structure of the present invention, each of the frames 3A and 3B has the pair of support columns 31 arranged at a separation distance corresponding to the width of the base portion 2, and is positioned at a predetermined height from the lower ends of these support columns 31. A hanging bar 33 is provided, and a bolt 42 is mounted on the upper end of the foundation portion with the two side surfaces of the foundation portion sandwiched by the lower end sides of the pair of support columns 31 and screwed to the lower end portion of the support column 31. Fixed to the base 2.

  In the installation structure of the present invention, the module 1 can be installed very simply by the configuration of the base part 2 and the frame part. The installation of module 1 is as follows. That is, first, the base portion 2 is arranged at the place where the module 1 is installed. The base portion 2 is constructed by digging the ground about 100 mm, laying an empty kneaded mortar with a thickness of 20 to 30 mm, and dropping a U-shaped side groove as a molded body, for example.

  On the other hand, the frame part can be constructed by first attaching the frame structures 3A and 3B to the base part 2, but from the viewpoint of workability such as positioning with respect to the module 1, the frame parts 3A and 3B are attached to the module 1 in advance. Is preferred. Specifically, the module 1 is turned upside down, and the frames 3A and 3B are mounted on the back of the module 1 in a state of being overturned. That is, by inserting a plurality of screws 5 into the beam 32 of the frame 3A on the near side that has been turned over and screwed to the back side of the outer peripheral frame of the module 1, the frame 3A is attached to one end of the module 1. Fix it. Similarly, the frame 3 </ b> B is fixed to the other end of the module 1.

  Next, the module 1 is repeated, the surface of the module is turned up, and the frame part is placed on the upper end of the foundation part so as to cover the foundation part 2 in this state. At that time, the frame 3A, 3B is mounted on the upper end of the base portion with the two side surfaces of the base portion 2 sandwiched between the lower ends of the pair of support columns 31 provided in the respective frames 3A, 3B. , 3B is received by the hanging bar 33. Then, the bolts 42 are screwed onto the nuts 41 attached to the lower ends of the respective columns 31 and tightened. In that case, when the U-shaped side groove having a structure in which the upper end of the U-shaped section bulges outward is used as the base portion 2, the bulged outer edge portion 21 can be used as a retaining bolt 42. The frames 3A and 3B can be securely attached.

  As described above, in the installation structure of the present invention, the molded body is arranged as the base part 2, the frame parts 3A and 3B are mounted on the base part 2 as the frame part, and the pedestal is simply tightened by the bolts 42 of the frame parts 3A and 3B. Since the part can be constructed, the construction is extremely simple compared to a conventional structure in which a concrete foundation is placed and steel materials are combined vertically and horizontally. And by using a pair of frame 3A, 3B of an equivalent structure, since a member structure can be reduced and workability can be improved, material cost and construction cost can be reduced more.

  In addition, in the installation structure of the present invention, by using a general-purpose U-shaped side groove as the base portion 2, a part of the gantry constituted only by the conventional frame can also be used as the U-shaped side groove. The amount of the steel material in 3A, 3B) can be reduced, and the material cost and the construction cost can be further reduced. Furthermore, in the installation structure of the present invention, since the module 1 can be removed simply by loosening the bolts 42 of the frames 3A and 3B, maintenance management is extremely easy. As described above, since the installation structure of the present invention can be constructed at low cost and is easy to maintain, the so-called mega solar (large-scale power generation system) for generating power of 1 MW or more by arranging a large number of modules 1 is used. Is preferred.

DESCRIPTION OF SYMBOLS 1: Solar cell module 2: Base part 21: Outer edge part 3A: Frame 3B: Frame 31: Post 32: Beam 33: Hanging bar 34: Brace 41: Nut 42: Bolt 5: Screw

Claims (2)

  An installation structure for installing a panel-shaped solar cell module having a rectangular planar shape, and a concrete base portion arranged on the ground and a metal attached to the upper portion of the base portion to support the solar cell module The base portion is formed of an elongated molded body having a flat bottom surface and two parallel side surfaces, and the frame portion is attached to one end of the base portion in the longitudinal direction and is a solar cell. A frame on the near side that supports one short side of the back side of the module, and a rear side that is attached to the other end in the longitudinal direction of the base and supports the other short side of the back side of the solar cell module Each frame includes a beam spanning the upper ends of a pair of support columns arranged at a distance corresponding to the width of the foundation portion, and a suspension bar at a predetermined height from the lower ends of these support columns. Crossed The frame on the rear side has a structure in which the support is higher than the frame on the near side, and each frame has a structure in which the two side surfaces of the foundation are sandwiched between the lower ends of the pair of supports. An installation structure for a solar cell module, wherein the solar cell module installation structure is mounted on the upper end and fixed to the base portion with a bolt screwed to the lower end portion of the support column.   The installation structure according to claim 1, wherein the base part is configured by a U-shaped side groove having a U-shaped cross section orthogonal to the longitudinal method.

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