JP2859825B2 - Solar power system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photovoltaic power generation system in which sheet solar cell modules are laid on a roof of a house.

[0002]

2. Description of the Related Art There is great expectation for solar cells as a source of clean energy. Since the amount of electric power obtained by the solar cell is proportional to the area of the solar cell, a large solar cell installation place is required to obtain a large amount of electric power. The use of such an installation location on the upper surface of a building, particularly on a roof of a sloping house or the like, which is less likely to be used, is also suitable in terms of proximity to a power consumption location.

[0003] The simplest method for installing a solar cell on a roof of a house or the like is to install the base on a roof tile by fixing it to a roof structural member with a metal fitting or the like, and to mount a plurality of solar cell elements on the base. This is a method of installing a module consisting of However, in this case, the gantry and the module become structures independent of the roof, and not only are large strengths required, but also the gantry and the solar cell module impair the aesthetics of the house. there were.

Therefore, solar cell tiles have been developed as an alternative method. The solar cell tile is formed by directly forming a solar cell element on a tile base material, or by attaching or embedding a solar cell element to a tile base material. Furthermore, as a more versatile solar power roofing material, solar roofing is disclosed in
No. 185,665. In this solar roofing, a waterproof sheet called a roofing, which is a base material usually laid below a roof finishing material such as a tile in a residential roof, is formed by a solar cell module. A roofing material having a light-transmitting property is installed on the sheet-shaped solar roofing material to form a roof for a house, and wiring is drawn from the solar roofing material indoors to form a solar power generation system. FIG.
Is a cross-sectional view of the configuration of such a solar power generation system,
The solar roofing material 1 is obtained by sealing a plurality of solar cell submodules 11 having a photoelectric conversion layer made of amorphous silicon with a waterproof and transparent protective material 12 using an insulating film as a substrate. The material 1 is laid on the base plate 2 and the light incident surface is covered with a tempered glass plate 3 of a roof finishing material. When the wiring is drawn indoors, the lead wire 14 connected to the terminal 13 on the lower surface of the solar roofing material 1 is closed with a filler 24 through a through hole 23 opened in the base plate 2, and the indoor wiring material 4 and the lead wire 14 are connected. Connect at point 15.

[0005]

As shown in FIG. 5, when the lead-in wire 14 is passed through the through-hole 21 provided in the field board 2 to lead the wiring from the sheet-shaped solar roofing material 1 to the indoor as shown in FIG. Terminal 1 of roofing material 1 in
A connection work between the lead wire 3 and the lead wire 14 and a connection work between the same lead wire 14 and the indoor wiring material 4 in the attic are required, and the work takes time and the reliability of the connection tends to be low. In addition, there is a complication that work cannot be performed independently on the roof and in the attic. And in order to make a hole in the base plate 2,
The reliability of weathering, such as water leaks, was reduced. For the connection work on the roof, a method in which a lead wire is attached to the sheet-shaped solar cell in advance has also been proposed. The problem remains that independent connection work between the roof and the attic is not possible.

An object of the present invention is to solve the above-mentioned problems and to provide a photovoltaic power generation system that can be easily installed.

[0007]

In order to achieve the above-mentioned object, the present invention provides a solar roofing material in which both sides of a solar cell module are covered with a waterproof protective material, and which is installed on a roof base plate. In the photovoltaic power generation system in which the terminals of the module are connected to the indoor wiring, the connection between the terminals of the module and the indoor wiring is performed via through ports having connection means at both ends provided on the field board. .
It is preferable that the through-port is formed of a conductor penetrating the base plate and an insulating sealing material filling between the conductor and the base plate. It is preferable that the terminal of the solar cell module is a connector that is exposed from the protective material on the lower surface of the solar roofing material. It is effective that the connection means at both ends of the through port is a connector directly attached to the upper or lower part of the through port. The connector exposed on the lower surface of the solar roofing and the connector above the through port connected to the connector may be below the upper surface of the base plate.
At least one of the connection means at both ends of the through port is preferably a connector connected to the upper or lower part of the through port via a lead wire. A solar cell module is formed by connecting a plurality of sub-modules with a hollow common wiring, and a terminal of the module is a through hole that penetrates a protective material of a solar roofing material and communicates with the cavity of the common wiring. It is also effective that the connecting means is a lead wire inserted into the cavity of the common wiring through this through hole. At this time, the through hole into which the lead wire is inserted may be selected from a plurality of through holes previously formed. Preferably, the connector attached to the lower part of the through port is connected to the connector at the end of the indoor wiring. Preferably, the two connectors to be connected to each other are buttons, hook-and-loop fasteners or slide fasteners whose coupling portions are made of a conductive material.

[0008]

[Function] By providing a through port on the base plate, connection work between the solar cell terminal of solar roofing material and the through port can be performed by connecting the connectors to each other or by inserting lead wires on the roof. The connection between the solar roofing and the indoor wiring can be made only by the connection work between the connectors. The through port has a simple structure made of a conductor penetrating the base plate and a sealing material around the conductor, and has no water leakage or the like. By submerging the connector, which is the terminal of the solar cell module to be connected, and the connector at the upper end of the through port below the top surface of the base plate, the solar roofing comes into close contact with the base plate. The use of a button, a hook-and-loop fastener, or a slide fastener whose coupling portion is made of a conductive material for the connector simplifies the connection operation.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a photovoltaic power generation system according to an embodiment of the present invention will be described with reference to the drawings in which the same parts as those in FIG. In an embodiment of the present invention shown in FIG. 1, a through port 5 is provided in the base plate 2. The through port 5 includes an insulating and water-resistant sealing material 52 that fills a gap between the through conductor 51 and the base plate. An upper connector 61 is mounted on the upper side of the through port 5, and a lower connector 62 is mounted on the lower side. The upper connector 61 is connected to the connector 16 provided on the lower surface of the solar roofing material 1, and the lower connector 62 is connected to the connector 41 attached to the end of the indoor wiring member 4. Through port upper connector 61
For the roofing material connector 16, a connector that can be easily connected, such as a button, a hook-and-loop fastener, and a slide fastener, at least of which the connection portion is made of a conductive material, is used. As the through-port lower connector 62 and the indoor wiring connector 41, any type of connector can be used as long as it is a connector used for electric wiring, such as a plug-in type, a screw-in type, and the like.
Use a screw-type connector. The use of the tempered glass sheet 3 as the roof finishing material on the solar roofing material 1 is the same as the conventional one.

In the embodiment shown in FIG. 3, the lead wire 63 connects between the through port 5, the conductor 51 and the upper connector 61 connected to the roofing material connector 16. Thereby, connection is possible without aligning the position of the connector 16 of the solar roofing material 1 directly above the through port 5 of the base plate 2. Similarly, the connection between the lower connector 62 and the conductor 51 of the through port by a lead wire facilitates the connection work with the indoor wiring.

In the embodiment shown in FIG. 4, the through port 5 is provided in a recess 21 dug from the upper surface of the base plate 2, and the upper connector 61 of the through port 5 and the roofing material connector 1 are provided.
6 enters the interior of the concave portion 21 and the base plate 2
So that it does not protrude from the upper surface of the. This allows
The roofing material 16 can be laid closely on the base plate 2. The insulating material 2 is provided in the space formed in the recess 21.
Fill 2

FIGS. 5 (a) and 5 (b) show a top perspective view and a bottom perspective view, and FIGS. 6 (a) and 6 (b) show AA of FIG. 5 (b).
Line, shows the solar roofing material in the BB line sectional view,
The photovoltaic power generation system shown in a sectional view in FIG. 7 is still another embodiment of the present invention. In the solar roofing material 1 used in this embodiment, as shown in FIG.
1 are connected by a common wiring 18 having a cavity 17 therein. The common wiring 18 is formed of copper or aluminum foil. The cavity 17 is opened at the lower surface of the roofing material by a through hole 19. As shown in FIG. 7, the connection between the roofing material 1 and the through port 5 is made through the through hole 19 through the lead wire 63 connected to the conductor 51 of the through port.
It is done by plugging in. By using a foil material for the lead wire 63, the gap between the roofing material 1 and the base plate 2 can be narrowed. The through hole 19 can be opened at a good position of the connection portion when installing the roofing. However, in order to save the trouble, the common wiring 18 may be previously provided at an arbitrary interval. In this case, a protective seal is stuck on the through hole 19 until connection with the indoor wiring 4, and only the protective seal of the through hole 19 to be used is peeled off.

[0013]

According to the present invention, by providing a through port in the base plate, the work on the roof and the work in the attic for drawing in the wiring from the output terminal of the solar cell module on the roof to the interior can be performed. Work can be performed independently, and work on the roof and the attic, which are difficult to work, has been significantly reduced, and the work time and reliability for the construction of the photovoltaic power generation system have been reduced. .

[Brief description of the drawings]

FIG. 1 is a sectional view of a photovoltaic power generation system according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a conventional solar power generation system.

FIG. 3 is a sectional view of a solar power generation system according to another embodiment of the present invention.

FIG. 4 is a sectional view of a solar power generation system according to still another embodiment of the present invention.

FIG. 5 shows a solar roofing material used in a solar power generation system according to still another embodiment of the present invention, wherein (a) is a top perspective view and (b) is a bottom perspective view.

FIG. 6 shows the same solar roofing material as FIG. 5,
5A is a sectional view taken along the line AA of FIG. 5B, and FIG.
(b) BB sectional view

FIG. 7 is a partial cross-sectional view of a solar power generation system using the solar roofing material of FIGS. 5 and 6;

[Description of Signs] 1 Solar roofing material 2 Field board 3 Tempered glass plate 4 Indoor wiring 41 Indoor wiring connector 5 Through port 51 Through conductor 52 Sealing material 61 Through port upper connector 62 Through port lower connector 63 Lead wire

Claims (12)

(57) [Claims] 1. A solar cell comprising a sheet-like solar roofing material having both sides of a solar cell module covered with a waterproof protective material, placed on a roof base plate, and terminals of the module connected to indoor wiring. A photovoltaic power generation system, wherein a connection between a terminal of a module and an indoor wiring is made through through ports having connection means at both ends provided on a field board. 2. The photovoltaic power generation system according to claim 1, wherein the through port comprises a conductor penetrating the field plate, and an insulating sealing material filling between the conductor and the field plate. 3. The photovoltaic power generation system according to claim 1, wherein the terminal of the solar cell module is a connector exposed from a protective material on a lower surface of the solar roofing material. 4. The photovoltaic power generation system according to claim 1, wherein at least one of the connection means at both ends of the through port is a connector directly attached to an upper portion or a lower portion of the through port. 5. The photovoltaic power generation system according to claim 4, wherein the connector exposed on the lower surface of the solar roofing material and the connector above the through port connected thereto are below the upper surface of the field board. 6. The photovoltaic power generation system according to claim 1, wherein at least one of the connection means at both ends of the through port is a connector connected to an upper portion or a lower portion of the through port via a lead wire. . 7. A solar cell module comprising a plurality of sub-modules connected by a hollow common wiring, and a terminal of the module penetrating through a protective material of a solar roofing material and communicating with a cavity of the common wiring. 3. The photovoltaic power generation system according to claim 1, wherein the connection means at the upper end of the through port is a lead wire inserted into the cavity of the common wiring through the through hole. 8. A through hole into which a lead wire is inserted is selected from a plurality of through holes formed in advance.
The solar power generation system as described. 9. The photovoltaic power generation system according to claim 1, wherein a connector attached to a lower portion of the through port is connected to a connector at an end of an indoor wiring. 10. The photovoltaic power generation system according to claim 1, wherein the two connectors connected to each other are buttons whose coupling portions are made of a conductive material. 11. The photovoltaic power generation system according to claim 1, wherein the two connectors to be connected to each other are hook-and-loop fasteners whose coupling portions are made of a conductive material. 12. The photovoltaic power generation system according to claim 1, wherein the two connectors to be connected to each other are slide fasteners whose coupling portions are made of a conductive material.