JP2012195470A - Fixing apparatus of solar cell module - Google Patents

Abstract

【Task】
A solar cell module fixing device is provided.
[Solution]
The solar cell module having flexibility has a fixing member composed of a front surface fixing member that sandwiches at least a part of at least two opposite sides from the light receiving surface side and a back surface fixing member that sandwiches the non-light receiving surface side. In the solar cell module fixing device in which the fixing member is fixed to the support member, the fixing member has a wave shape (wave shape).
[Selection] Figure 2

Description

The present invention relates to a structure of a solar cell module and a fixing device thereof.

In order to use a solar cell, it is necessary to attach the solar cell module which has a photovoltaic cell to a fixing member.
FIG. 4 shows a conventional structure of a solar cell module 1 in which a thin-film solar cell is laminated with a sealing material or a sealing material with a protective film and a frame for fixing is attached. The thin film solar cell is obtained by laminating an electrode and a photoelectric conversion layer on a flexible substrate, and the solar cell module 1 is also flexible.
The adhesive 9 was pasted on the non-light-receiving surface side of the end of the solar cell module 1 and adhered to the lower frame 70. The upper frame 60 was installed at the end of the solar cell module from the light receiving surface side, and the solar cell module 1 and the lower frame 70 were fixed from above the upper frame 60 with the fixing screw 10. The end of the solar cell module 1 is fixed by a fixing screw 10. Further, the lower frame 70 is fixed to a support material such as a roof or a wall (not shown) with a fixing screw 10 at the center.
For example, Patent Document 1 discloses a structure in which a through hole is provided in a solar cell module and a frame, and is fixed with a fixing screw and an adhesive having elasticity such as butyl rubber.
Patent Document 2 discloses a frame in which a pressing member of a waterproof elastic body is pasted in order to fix a solar cell module with a reinforcing plate, which is fixed to a reinforcing plate with a double-sided tape, to a reinforcing plate. Describes a structure to be inserted and fixed.
Further, Patent Document 3 discloses a structure in which irregularities are provided in a holding portion for fixing a solar cell module.

JP 2001-7375 A JP 2004-297104 A JP 2006-1000063 A

  When the solar cell module and the frame are fixed with a fixing screw and an adhesive as in the conventional structure described in Patent Document 1, a process of attaching or applying the adhesive to the solar cell module is necessary.

Further, in the structure described in Patent Document 2, the force to sandwich the flexible solar cell module is weak, and when exposed to strong wind pressure for a long time, the module may come off the frame and come off. .
Further, in the structure described in Patent Document 3, the end portions of the sandwiching portion that sandwiches the solar cell module from both sides are overlapped, and in the case of a flexible solar cell module, this end portion can be a starting point of breakage. There was sex.

An object of this invention is to provide the fixing device of the solar cell module for preventing the damage from the fixing part of a solar cell module, and fixing firmly.

In order to solve the above-described problems of the related art, the present invention provides a surface for sandwiching at least a part of a solar cell module having flexibility and at least two sides of the solar cell module facing each other from the light receiving surface side. In a fixing device having a fixing member and a fixing member composed of a back surface fixing member sandwiched from the non-light-receiving surface side, and the fixing member is fixed to the support material, the front surface fixing member and the back surface fixing member have a wave shape (wave Shape).

Moreover, the edge part of a fixing member has R shape.
Of the fixing members, the back surface fixing member is bent.
Moreover, the edge part of a surface fixing member and a back surface fixing member does not overlap.
Further, the end portions of the front surface fixing member and the rear surface fixing member are separated by a distance two to three times the thickness of the solar cell module.

ADVANTAGE OF THE INVENTION According to this invention, the fixing device of the solar cell module for preventing the damage from the fixing | fixed part of a solar cell module and fixing firmly can be obtained.

The top view of the fixing device of the solar cell module of embodiment of this invention Sectional drawing of the fixing device of the solar cell module of embodiment of this invention (A-A 'sectional drawing of FIG. 1) Structure diagram of solar cell module Sectional drawing of the fixing device of the solar cell module of conventional embodiment

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all the drawings, the same reference numerals are given to the same components, and the description will be omitted as appropriate.
1 and 2 are configuration diagrams of a solar cell module fixing device according to an embodiment of the present invention. 1 is a plan view, and FIG. 2 is a cross-sectional view taken along line AA ′ of FIG.

FIG. 3 shows a structural diagram of the solar cell module 1. This solar cell module 1 includes a solar cell 2 in which an electrode and a photoelectric conversion layer are formed on a flexible insulating substrate, a surface protection member 3 disposed on the light receiving surface side, and a back surface disposed on the non-light receiving surface side. The front surface protection member 3 and the back surface protection member 4 have a configuration in which the solar cells 2 are entirely sealed with a sealing material 5 and laminated. And the solar cell module 1 also has flexibility.
Furthermore, the solar cell module 1 has a through-hole 8, and a plurality of the through-holes 8 are provided along each of two opposing sides of the front surface protection member 3 and the back surface protection member 4. It is preferable that In FIG. 1, the through-holes 8 are provided on both sides in the length direction of the solar cell module 1 (direction perpendicular to the AA ′ cross section), but the width direction of the solar cell module 1 a (A -A 'cross-sectional direction) may be provided.

  Since the solar cell module 1 in this embodiment is formed using a flexible substrate, it has flexibility. And the surface protection material 3 and the back surface protection material 4 are attached by the sealing material 5 which consists of sealing resin, and has sealed the photovoltaic cell 2. FIG. As a method for sealing the solar battery cell 2, for example, a vacuum laminating method or a roll laminating method is used.

  The surface protective material 3 is, for example, a tetrafluoroethylene-ethylene copolymer, a vinylidene fluoride resin, a trifluorinated ethylene resin, ETFE (Ethylene tetrafluoroethylene), an acrylic resin, a trifluoroethylene chloride coated acrylic resin, or It is a film made of a polyester resin.

  The sealing resin as the sealing material 5 is a laminate film, such as an ethylene vinyl acetate copolymer (hereinafter referred to as EVA), an epoxy resin, a urethane resin, a silicon resin, an acrylic resin, a fluororesin, or polyisobutylene. It is a film made of a resin material.

The back surface protective material 4 is, for example, aluminum foil laminate 1 fluorinated vinyl resin, aluminum foil laminated polyester resin, tetrafluoroethylene-ethylene copolymer, vinylidene fluoride resin, trifluoroethylene resin, PET (Polyethylene terephthalate), It is a film made of PEN (Polyethylene naphthalate), acrylic resin, trifluoroethylene chloride coated acrylic resin, or polyester resin.

  In the example shown in FIG. 1, four solar cells 2 are provided. In the sealing resin of the front surface protective material 3 and the back surface protective material 4, wiring (not shown) for electrically connecting the solar cells 2 to each other is sealed together with the solar cells 2. The number and arrangement of the solar cells 2 can be changed according to required specifications.

In FIG. 1 which is an embodiment of the present invention, a surface fixing member 6 is provided on the surface of the surface protection member 3 along each of two opposing sides in the length direction of the solar cell module 1.
And the through-hole 8 provided in the solar cell module 1 exists in the position in which the surface fixing member 6 and the back surface fixing member 7 were provided, and the fixing screw 10 is the surface fixing member 6, the solar cell module 1, and the back surface. The fixing member 7 is fixed at the position of the through hole 8. A fixing screw 10 at the center of the back surface fixing member 7 fixes the back surface fixing member 7 to a support material such as a wall or a roof (not shown).

2 is a cross-sectional view taken along line AA ′ of FIG. The fixing member of the present invention has a front surface fixing member 6 installed on the light receiving surface side and a back surface fixing member 7 installed on the non-light receiving surface side.
Both the front surface fixing member 6 and the back surface fixing member 7 have a wave shape (wave shape), and have a structure in which the solar cell module 1 is sandwiched. Because it has a wave shape (wave shape), the portion where the solar cell module 1 and the fixing member are in contact with each other is larger than the conventional structure in which the surface of the fixing member is provided with fine irregularities to prevent slipping. Since the area to do increases, it can prevent that the solar cell module 1 comes off from a fixing member.
In addition, it is desirable that the wave-shaped peaks and valleys of the front surface fixing member 6 and the back surface fixing member 7 face each other because the solar cell module 1 is difficult to come off.

  Moreover, as shown in FIG. 2, the edge parts 6a and 6b of the surface fixing member 6 and the edge parts 7a and 7b of the back surface fixing member 7 are R-shaped. In the case of chamfering, since there is always an acute angle part, it bites into the surface protection material or back surface protection material of the solar cell module. For this reason, the end portion must be R. The size is preferably R1 or more. By making the end portion of the fixing member inside the solar cell module 1 into an R shape, the surface of the solar cell module 1 is not worn, and there is an effect of preventing breakage.

In addition, the back surface fixing member 7 is formed by bending a portion of the back surface fixing member 7c shown in FIG. 2, and by forming a bent structure, constants (section modulus, second moment of section, etc.) contributing to bending rigidity are improved. In addition, the rigidity of the fixing member is higher than that of the flat plate.
Further, the end portion 6a of the front surface fixing member 6 and the end portion 7a of the back surface fixing member 7 and the end portion 6b of the front surface fixing member 6 and the end portion 7b of the back surface fixing member 7 sandwiching the solar cell module 1 do not overlap. is set up. Thereby, stress concentration on the end of the fixing member can be prevented, and damage to the solar cell module can be prevented.
Further, the end portion 6a of the front surface fixing member 6 and the end portion 7a of the back surface fixing member 7, and the end portion 6b of the front surface fixing member 6 and the end portion 7b of the back surface fixing member 7 are each 2 of the thickness of the solar cell module 1. It is desirable that the distance is three to three times. That is, the lengths of Ta and Tb shown in FIG. 2 are two to three times the thickness of the solar cell module 1. If the distance is less than twice the thickness of the solar cell module 1, it is difficult to avoid stress concentration at the end of the fixed member. Moreover, it is because the fixing member of the separated part will not contribute with respect to fixation of the solar cell module 1 if it leaves | separates 3 times or more of the thickness of the solar cell module 1. FIG.
In the embodiment of the present invention, the solar cell module 1 is fixed to a support material such as a roof, a wall, and a gantry (not shown) by a fixing member. The back surface fixing member 7 and the solar cell module 1 are arranged on the support material, and the surface fixing member 6 is further arranged from the top of the solar cell module 1, and the through-hole 8 part is fixed by screwing with the fixing screw 10. Configure as follows. In addition to the fixing screw, there is also a method of fixing the support member and the fixing member by fastening them with a vise.

  According to the configuration of the present invention, a force is received on the surface in contact with the fixing member, so that local stress concentration is prevented from occurring in the solar cell module main body, and reliable fixing can be performed.

As mentioned above, although embodiment of this invention was described with reference to drawings, these are the illustrations of this invention, Various structures other than the above are also employable.

DESCRIPTION OF SYMBOLS 1 Solar cell module 2 Solar cell 3 Surface protection member 4 Back surface protection member 5 Sealing material 6 Surface fixing member 7 Back surface fixing member 8 Through-hole 9 Adhesive material 10 Fixing screw

Claims (5)

A flexible solar cell module;
A fixing member composed of a surface fixing member that sandwiches at least a part of at least two sides of the solar cell module facing from the light receiving surface side, and a back surface fixing member sandwiched from the non-light receiving surface side;
In the fixing device in which the fixing member is fixed to a support material,
The solar cell module fixing device, wherein the front surface fixing member and the back surface fixing member have a wave shape (wave shape). The solar cell module fixing device according to claim 1, wherein an end portion of the fixing member has an R shape. The solar cell module fixing device according to claim 1, wherein the back surface fixing member is bent. 4. The solar cell module fixing device according to claim 1, wherein ends of the front surface fixing member and the rear surface fixing member sandwiching the solar cell module do not overlap each other. 5. 5. The sun according to claim 1, wherein the end portions of the front surface fixing member and the back surface fixing member are separated by a distance of 2 to 3 times the thickness of the solar cell module. Battery module fixing device.