JP2003213865A - Installation structure for solar battery module - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide installation structure that can easily earth a plurality of solar battery modules in the case of installing the plurality of solar battery modules at a structure without using a frame. <P>SOLUTION: A flashing board 7 made of a steel sheet is arranged between the back face plates 3, 3 made of steel sheet of the solar battery modules 1, 1 and backing materials 6, 6, across both opposed end parts of the heat insulating backing materials 6, 6 on a sheathing roof board 5 of a roof. Machine screws 8 fitted into holes 7b, 7b of projecting parts 7a, 7a provided at the side faces of the upper side part (the ridge side part) of the flashing board 7 fix the back face plates 3, the projecting parts 7a and the backing materials 6 integrally to the sheathing roof board 5 in the form of interposing the projecting parts 7a between the back face plates 3 and backing materials 6 in the respective solar battery modules 1. All the solar battery modules 1 in a lateral direction (a girder direction) are made electrically conductive by the flashing boards 7 to have the same electric potential, and all these solar battery modules 1 can be earthed by one solar battery module 1. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an installation structure in which a plurality of solar cell modules are installed on a structure such as a roof plate of a house for solar power generation.

[0002]

2. Description of the Related Art Photovoltaic power generation, which converts light energy into electric energy by utilizing a photoelectric conversion effect, is widely used as a means for obtaining clean energy. And with the improvement of photoelectric conversion efficiency of solar cells,
Solar power generation systems are being installed.

A solar power generation system is composed of a plurality of solar cell modules installed on the roof of a house, an inverter for converting DC power generated by light irradiation into AC power, a storage battery for storing the collected power, and the like. There is. Each solar cell module has a configuration in which a solar cell is attached to a back plate made of, for example, a steel plate with an adhesive, and the plurality of solar cell modules are installed on the roof via a heat insulating lining material. In addition, in order to prevent water from entering between the solar cell modules that are adjacent to each other in the left-right direction (column direction), a draining plate that spans both solar cell modules is used.
It is provided between the back plate and the backing material.

As a method of installing a plurality of solar cell modules on a roof of a house, a method of installing a plurality of solar cell modules on a metal frame and mounting the frame on the roof of the house, or a method of directly mounting the plurality of solar cell modules There is a method of installing on the roof structure (field board). In the latter method of installing a solar cell module integrated with a structure, a stepped structure is often used to improve the design.

In a residential solar power generation system,
All solar cell modules installed must be grounded. In the former installation method described above, since all the solar cell modules are electrically connected via the pedestal, it is possible to ground relatively easily.

[0006]

On the other hand, in the latter installation method described above, it is difficult to ground, and conventionally, a ground wire is drawn out from each solar cell module and connected to each other to connect all solar cells. The module is grounded. Therefore, it takes a lot of time and effort to install a plurality of solar cell modules on the roof of a house, which causes a rise in installation cost of the photovoltaic power generation system.

The present invention has been made in view of the above circumstances, and when a plurality of solar cell modules are integrally installed in a structure without using a pedestal, a plurality of solar cell modules are utilized by using a draining member. It is an object of the present invention to provide a solar cell module installation structure capable of easily grounding.

[0008]

According to a first aspect of the present invention, there is provided a solar cell module installation structure in which a plurality of solar cell modules each having a solar cell attached to a conductive plate material are installed together with a backing material in a structure. A conductive water draining member is provided in contact with each of the plate members of two solar cell modules that are fitted together, and electrical conduction between the two solar cell modules is obtained by the water draining member. And

According to a second aspect of the present invention, there is provided a solar cell module installation structure according to the first aspect, wherein the two solar cell modules, the draining member, and the backing material corresponding to the two solar cell modules, respectively. And are fixed to the structure by a common conductive fixing member.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be specifically described below with reference to the drawings showing the embodiments thereof. FIG. 1 is a perspective view showing an example of an installed state of a plurality of solar cell modules according to the present invention, FIG. 2 is a cross-sectional view of one solar cell module 1, and FIG. It is sectional drawing of the overlapping part of the solar cell module 1.

The solar cell module 1 comprises, for example, a solar cell 2 constructed by electrically connecting a large number of solar cell elements formed by laminating a back surface electrode, a photoactive layer, and a surface electrode, for example, a back plate made of a steel plate. 3 has a configuration in which it is attached with an adhesive 4 such as EVA (ethylene vinyl acetate). The solar cell module 1 is manufactured by integrating the solar cell 2 and the back plate 3 with the adhesive 4 interposed therebetween by a vacuum heating and pressure bonding method.

The upper part (ridge side part) and the lower part (eave side part) of the back plate 3 are meshing parts 3a and 3b having different shapes.
When a plurality of solar cell modules 1 are installed, the interlocking portion 3a on the upper side (ridge side) of the lower (eave side) solar cell module 1 and the upper (ridge side) solar cell module 1 Interlocking part 3b on the lower side (eave side)
Are designed to mesh with each other.

A lining material 6 having substantially the same area as that of each solar cell module 1 is attached on the roof base plate 5.
This backing material 6 is, for example, a foamed plastic heat insulating material (bead polystyrene, extruded polystyrene, hard urethane,
It is made of polyethylene, phenol), rock wool board, etc. and has heat insulation properties.

A draining plate 7 made of, for example, a steel plate is provided across the opposite ends of the backing materials 6, 6 corresponding to the solar cell modules 1, 1 adjacent to each other in the left-right direction (column direction). It is installed between the face plates 3 and 3 and the backing materials 6 and 6. The draining plate 7 prevents water from entering the inside of the solar cell module 1 from the gap between the solar cell modules 1 and 1 adjacent in the left-right direction (column direction).

On the side surface of the upper portion (ridge side portion) of the draining plate 7, there are provided protrusions 7a, 7a extending in the left-right direction. Holes 7b, 7b for screw fitting are formed in each of these protrusions 7a, 7a. In each solar cell module 1, the projecting portion 7a is interposed between the interlocking portion 3a on the upper side (ridge side portion) of the solar cell module 1 and the backing material 6 by the screw 8 fitted in the hole 7b. The engaging portion 3a, the protruding portion 7a, and the backing material 6 are fixed to the base plate 5.

As a result, two adjacent two in the left-right direction (column direction)
The two solar cell modules 1 and 1 are electrically connected to each other via a draining plate 7. The installation of the draining plate 7 is performed between all adjacent solar cell modules 1 and 1. Therefore, all the solar cell modules 1 arranged in the left-right direction (column direction) are electrically conducted through the draining plate 7, so that all the solar cell modules 1 in the left-right direction (column direction) are electrically connected. On the other hand, a common ground can be taken.

The installation operation of the solar cell module 1 will be described below. First, 2 adjacent to each other in the left-right direction (column direction)
A draining plate 7 is arranged so as to straddle both ends of the two backing materials 6 and 6 that face each other. Next, two solar cell modules 1, 1 adjacent to each other in the left-right direction (column direction) are lined with the backing material 6,
Place on top of 6. At this time, the gap between the backing materials 6, 6 is covered with the draining board 7, and the draining board 7 is provided between the interlocking portion 3a of each solar cell module 1 and the upper (ridge side) end of each backing material 6. Each of the protrusions 7a is located.

Then, a screw 8 is fitted into the hole 7b of the protrusion 7a, and the engaging portion 3a, the draining plate 7 and the backing material 6 are integrally screwed and fixed to the field plate 5 by the screw 8. As a result, the two left and right solar cell modules 1, 1 are electrically connected via the draining plate 7.

By sequentially performing such processing in the left-right direction (column direction), all the solar cell modules 1 in the left-right direction (column direction) are electrically conducted to have the same potential, In this configuration, all the solar cell modules 1 can be grounded by one solar cell module 1.

When the predetermined position of the engaging portion 3a is marked in advance so that the screw fastening position does not shift, the size of the protrusion 7a of the draining plate 7 can be reduced. On the other hand, in consideration of the positional deviation when installing the solar cell module, if the protrusion 7a is made large so as to cover all the portions that may be screwed, it is necessary to ensure that a common ground is provided. it can.

The shape of the draining plate 7 is not limited to that shown in FIG. 1 as long as the protruding portion to be screwed with the engaging portion 3a is provided so as to protrude outward. May be

By the way, even at the end portions of the solar cell modules 1 and 1 located at the left and right ends of each row that are not adjacent to the solar cell module 1, in order to prevent water from entering the solar cell module 1, the draining It is common to provide a plate. Therefore, when the configuration is such that a plurality of draining plates provided at the left end (or right end) of each row are connected, all the solar cell modules 1 arranged in a matrix are electrically connected. Therefore, it is also possible to take the ground of all of these solar cell modules 1 with one solar cell module 1.

[0023]

As described above, according to the present invention, both solar cells are provided by the conductive draining member provided between the plate materials of the adjacent solar cell modules and the lining material corresponding to both solar cell modules. Since the battery modules are electrically conducted, even when a plurality of solar cell modules are integrally installed in the structure without using a gantry, the plurality of solar cell modules can be easily grounded,
It is possible to reduce the installation time and cost of the solar cell module.

Further, according to the present invention, since the plate member, the draining member and the lining material of the solar cell module are integrally fixed to the structure by the common conductive fixing member, the solar cell module and the draining member are It is possible to ensure electrical continuity with the member, to reliably obtain electrical connection between the plurality of solar cell modules, and to improve the reliability of grounding.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of an installed state of a plurality of solar cell modules according to the present invention.

FIG. 2 is a cross-sectional view of one solar cell module.

FIG. 3 is a cross-sectional view of an overlapping portion of both solar cell modules in a vertical direction (a direction of the eaves).

[Explanation of symbols]

1 solar cell module 2 solar cells 3 Back plate 3a, 3b engagement part 4 adhesive 5 Base plate 6 Lining material 7 Drainer 7a protrusion 8 screws

Claims (2)

[Claims] 1. In a structure in which a plurality of solar cell modules each having a solar cell attached to a conductive plate material are installed in a structure together with a backing material thereof, the plate materials of two adjacent solar cell modules are brought into contact with each other so as to be conductive. An installation structure of a solar cell module, wherein a draining member is provided, and electrical connection between the two solar cell modules is obtained by the draining member. 2. Each of the two solar cell modules,
The solar cell according to claim 1, wherein the draining member and each of the backing materials corresponding to each of the two solar cell modules are fixed to the structure by a common conductive fixing member. Module installation structure.