JP2002276086A - Solar battery module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solar battery module simplified in the waterproof structure thereof and having excellent fire resistance in relation to a fire in neighborhood. SOLUTION: The solar battery 11 is mounted on a surface of a base material 15, and a terminal box 17 having an outputting cable 18 is provided in a back surface side of the base material 15. A lead wire 14 led out of the solar battery 11 is connected to the terminal box 17 through a small hole 16 provided in the base material 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a solar cell module mounted on a roofing material of a building.

[0002]

2. Description of the Related Art A technique in which a solar cell module is mounted on a roof material of a building to convert solar energy into electricity and use the electricity is known from, for example, JP-A-2000-244000 and JP-A-2000-54579. I have.

Japanese Patent Application Laid-Open No. 2000-244000 discloses a solar cell module having a back surface material on the back surface side of a solar cell. The lead wire thus led is inserted into the bush, led to the back side of the back material, and connected to the terminal box.

Japanese Patent Application Laid-Open No. 2000-54579 discloses a solar cell panel in which a solar cell is sealed between a front substrate and a back metal plate, wherein the back metal plate is provided with an extending portion extending toward the ridge. A terminal box is provided on the upper surface of the extending portion.

[0005]

SUMMARY OF THE INVENTION However, Japanese Patent Application Laid-Open
Japanese Patent Application Laid-Open No. 000-244000 has a structure in which a large through hole is provided in the back surface material, a bush as a closing means is attached to the through hole, and a lead wire is inserted through the bush. It is. In addition, JP
The structure of JP-A-00-54579 has a structure in which a terminal box is exposed on the surface of a solar cell module, which simplifies the work of wiring lead wires derived from the solar cell, but causes a loss of an effective area where sunlight enters. However, there is a problem that the photoelectric conversion efficiency for converting solar energy into electricity is poor for the size of the solar cell module.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and has as its object the purpose of forming a lead by merely forming a minimum necessary hole for inserting a lead wire of a solar cell into a base material such as a roof material. An object of the present invention is to provide a solar cell module that can connect a wire to a terminal box, has a simple waterproof structure, and is excellent in fire resistance against a nearby fire.

[0007]

In order to achieve the above object, according to the present invention, a solar cell is mounted on a surface of a substrate and an output cable is provided on a back surface side of the substrate. A solar cell module is provided, wherein a terminal box is provided, and a lead wire derived from the solar cell penetrates the base material and is connected to the terminal box.

[0008] A second aspect of the present invention is characterized in that the base material of the first aspect is a roofing material such as a metal tile or a slate tile, and the roofing material is provided with a small hole through which the lead wire is inserted.

According to the above configuration, the lead wire inserted into the small hole of the base is electrically connected to the terminal box on the back side of the base. Therefore, it is only necessary to provide a minimum necessary hole for inserting the lead wire in the base material, the waterproof structure is simplified, and the lead wire and the output takeout cable are not exposed on the surface side of the base material, so that the fire resistance is improved. Is also excellent.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 3 show a first embodiment, and FIG.
2 is an exploded perspective view of the solar cell module 10 viewed from the back side, FIG. 2 is a perspective view of the assembled solar cell module 10 from the front side, and FIG. 3 is a perspective view of the solar cell module 10 installed on a roof. FIG. The solar cell 11 constituting the solar cell module 10 is formed, for example, by forming a transparent electrode layer, an amorphous semiconductor layer, and a back electrode layer on the surface of a single rectangular glass substrate 12, and then watertight by a sealing material 13 such as Tedlar. This is a sealed thin panel structure.
Note that the semiconductor layer is not limited to an amorphous semiconductor layer, but may be a single crystal, polycrystal, microcrystal,
It may be i-type or compound-type. Back surface 1 of this solar cell 11
2a, two lead wires 14 of plus and minus, which are made of insulated conductors, are led out at a part of 1a.

The base material 15 attached to the back surface 11a of the solar cell 11 is made of, for example, a metal plate such as aluminum or a slate roof, and is formed in a rectangular shape substantially the same as the size of the solar cell 11. A small hole 16 through which the lead wires 14 are inserted one by one is formed in a part of the base material 15 at a position corresponding to the lead wire 14 led out from the solar cell 11. Also, a small hole 16 on the back surface of the base material 15
A terminal box 17 is fixed at a position corresponding to. Two output extraction cables 18 are connected to the terminal box 17. Output extraction cable 18
A connector 19 is provided at an end of the connector.

The lead wire 14 inserted through the small hole 16 of the base material 15 passes through the bottom of the terminal box 17 and is connected to a terminal block in the box. 18 is electrically connected. Therefore, although the small hole 16 of the base material 15 is closed by the terminal box 17, a resin potting agent may be applied to the small hole 16 to form a watertight structure.

When the solar cell module 10 constructed as described above is installed on a roof, as shown in FIG. 2, a gantry 21 is attached to a base material 15 located on the lower edge side of the solar cell module 10. The pedestal 21 is made of a metal or a synthetic resin material, is provided over the entire length of the base material 15 in the width direction, and has a U-shaped fitting groove 22 that opens downward. The upper edge of the solar cell module 10 below (eave side) the solar cell module 10 is fitted into the fitting groove 22.

FIG. 3 shows a case where the solar cell module 10 is installed on a roof material 24 of a roof 23.
For example, it is a flat metal roofing material, a color vest roof, and a roofing material having a relatively small step. The solar cell modules 10 are arranged in the width direction of the roofing material 24 from the ridge side 24a of the sloped roofing material 24 in the longitudinal direction thereof, and the solar cell module 10 is fixed to the roofing material 24 via the gantry 21.

One row of solar cell modules 1 on the ridge side 24a
After the fixing of the solar cell modules 1 is completed,
The connectors 19 of the zero output cable 18 are electrically connected to each other. Next, the solar cell module 10 is similarly placed horizontally on the eaves side 24b in the longitudinal direction of the eaves side 24b.
Are arranged in the width direction of the solar cell module 10 at this time.
Of the solar cell module 10 on the ridge side 24a. Further, the connectors 19 of the output cable 18 of the adjacent solar cell modules 10 are electrically connected to each other.

By repeating such a construction, after the plurality of solar cell modules 10 are fixed to the roof material 24, the output extraction cable 18 is finally connected so that all the solar cell modules 10 are electrically connected. Are electrically connected to each other.

FIGS. 4 to 6 show a second embodiment.
5 is an exploded perspective view of the solar cell module 10, FIG. 5 is a perspective view of the solar cell module, and FIG. 6 is a schematic cross-sectional view in a construction state. The same components as those in the first embodiment are denoted by the same reference numerals. Is omitted.

The main body 26 of the metal roof tile 25 as a base material has a rectangular shape, and a mounting surface 27 of the solar cell 11 is provided on the upper surface thereof. A front hanging portion 26a is provided at a front edge portion of the main body 26, and a cross section of the rear edge portion 26b has a downward U-shape.
A rear protruding ridge 26b protruding from the upper surface from above 7 is provided. Further, a gutter 26c having a U-shaped cross section is provided on the left side of the main body 26.

The mounting surface 27 of the main body 26 has two small holes 2 corresponding to the positions of the lead wires 14 derived from the solar cell 11.
8, a terminal box 17 is fixed to a part of the back surface of the main body 26, and an output extraction cable 18 is led out to the terminal box 17.

The solar cell 11 is fixed to the mounting surface 27 of the main body 26 of the metal roof tile 25 configured as described above with an adhesive or the like. Has been inserted. Further, the small holes 28 may be sealed watertight with a resin potting agent. The lead wire 14 passing through the main body 26 is electrically connected to the terminal box 17 on the back surface of the main body 26.

When the solar cell module 10 is constructed, it is constructed in the same manner as that of tile roofing.
As shown in (b), the roof material 30 is constructed from the eaves side 30a to the ridge side 30b, and the upper part of the rear ridge 26b of the lower metal tile 25a has the front hanging portion 2 of the upper metal tile 25b.
6a are placed in an overlapping state. The metal tiles 25 adjacent to each other on the left and right are placed with the right edge of the left metal tile 25 overlapping the gutter 26c of the right metal tile 25. Therefore, the rainwater is drained along the gutter 26c, and it is possible to prevent the rainwater from flowing to the back side of the metal tile 25, so that a reliable waterproof structure is obtained and the lead wire 14 is connected to the front side of the metal tile 25. Because it is not exposed to fire, it has excellent fire protection against neighboring fires and can improve reliability.

According to the above embodiments, the following configuration is obtained.

(Supplementary Note 1) A solar cell is mounted on the surface of the base material, and a terminal box having an output cable is provided on the back surface side of the base material, and a lead wire derived from the solar cell is connected to the base material. A solar cell module, wherein the solar cell module is penetrated and connected to the terminal box.

(Supplementary Note 2) The solar cell according to Supplementary Note 1, wherein the base material is a roof material such as a metal roof tile or a slate roof tile, and a small hole through which the lead wire is inserted is provided in the roof material. module.

(Supplementary Note 3) The solar cell module according to Supplementary Note 2, wherein the small hole is watertightly sealed with a potting agent after a lead wire is inserted.

(Supplementary Note 4) The solar cell module according to supplementary note 1, wherein the terminal box is fixed to a back surface of the base material.

[0028]

As described above, according to the present invention, the lead wire derived from the solar cell is connected to the terminal box by penetrating the base material and connecting the solar cell to the base material such as a roof material. The lead wire can be connected to the terminal box only by making a minimum necessary hole for inserting the lead wire, and a solar cell module having a simple waterproof structure and excellent fire resistance against a nearby fire can be provided.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a first embodiment of the present invention, in which a solar cell module is viewed from a back surface side.

FIG. 2 is a perspective view of the assembled solar cell module according to the embodiment as viewed from the front side.

FIG. 3 is an exemplary perspective view showing a state where the solar cell module of the embodiment is installed on a roof;

FIG. 4 is an exploded perspective view of a solar cell module according to the second embodiment of the present invention.

FIG. 5 is a perspective view of the solar cell module according to the embodiment.

FIGS. 6A and 6B show the same embodiment, and FIGS. 6A and 6B are schematic cross-sectional views showing a state where a solar cell module is installed on a roof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Solar cell module 11 ... Solar cell 14 ... Lead wire 15 ... Base material 16 ... Small hole 17 ... Terminal box 18 ... Output extraction cable

Claims (2)

[Claims] 1. A solar cell is mounted on a surface of a base material, and a terminal box having an output cable is provided on a back surface side of the base material, and a lead wire derived from the solar cell passes through the base material. A solar cell module, wherein the solar cell module is connected to the terminal box. 2. The solar cell module according to claim 1, wherein the base material is a roof material such as a metal roof tile or a slate roof tile, and the roof material is provided with a small hole through which the lead wire is inserted. .