JPH1136540A - Installation construction of solar cell module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively cool a solar cell module to reduce voltage resistance. SOLUTION: A solar cell module 3 is borne on the shoulder section of a vertical batten, the solar cell module 3 is so installed that a vent layer 10 is provided on the roof surface, ventilating holes 11 for distributing air are bored in the vertical section of the vertical batten to improve ventilation efficiency, and radiation fins 12 for radiating heat are provided to the lower surface of the solar cell module 3 to radiate heat to be generated. A projection 13 is provided to a polyvinyl chloride steel plate to make a turbulent flow generate in air flowing in the vent layer 10, and heat is effectively cooled off.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suitable solar cell module installation structure for installing a solar cell module on a surface such as a roof of a building.

[0002]

2. Description of the Related Art In recent years, the spread of a solar power generation system for a house, in which a panel-shaped solar cell module is installed on a roof of a house or the like, and power is directly extracted from solar energy and supplied to the house, is being promoted. I have. Today, solar energy is attracting attention because unlike fossil fuels, there is no fear of exhaustion,
In addition, electricity can be extracted without going through the fuel process,
This is because there is no problem of destruction of the global environment. by the way,
Conventionally, as shown in FIGS. 10 and 11, a solar cell module includes a roof panel 1 on a roof 1 of a building T such as a house.
A, 1B are provided, and a solar cell module 3 for extracting electric power from sunlight is provided on the roof panel 1A on the south side (for example, see Japanese Patent Application Laid-Open No. 5-243598). The installation structure of the solar cell module 3 on the roof 1 is such that the solar cell module 3 is supported by a horizontal rail, a vertical rail, or the like.
A ventilation layer 31 through which air for dissipating heat flows is provided between the roof panel 1A and the solar cell module 3 (the same publication).

[0003]

However, according to the above-mentioned structure, the air existing in the ventilation layer 31 hardly flows because the periphery of the ventilation layer 31 is closed by a horizontal rail, a vertical rail, or the like. The battery module 3 cannot be cooled effectively. Therefore, if the cooling effect of the solar cell module 3 is small, a voltage resistance occurs, particularly when a plurality of solar cell modules 3 are connected in series.

[0004] The present invention has been made in view of the above circumstances, and effectively cools a solar cell module.
It is an object of the present invention to provide a solar cell module installation structure capable of reducing voltage resistance.

[0005]

In order to solve the above-mentioned problems, the invention according to claim 1 is to provide a solar cell module by mounting the solar cell module on a mounting surface of the solar cell module via a support member. A solar cell module installation structure in which a ventilation layer through which air flows is provided between the module and the installation surface, wherein a radiation fin that dissipates heat is provided on a lower surface of the solar cell module. It is characterized by:

According to a second aspect of the present invention, in the solar cell module installation structure of the first aspect, the installation surface of the solar cell module is constituted by a roof surface of a building,
The support member is constituted by a bar provided on the roof, and the solar cell module is supported via the bar, whereby the solar cell module is installed such that a ventilation layer is provided on the roof surface. doing.

Further, according to the invention described in claim 3, according to claim 2,
In the installation structure for a solar cell module according to the aspect, the crosspiece is configured by a vertical crosspiece having a trough-shaped cross section, and the solar cell module is supported by a shoulder of the vertical crosspiece, and air flows through a vertical portion of the vertical crosspiece. It is characterized by vent holes.

Further, according to the invention described in claim 4, according to claim 1,
Or in the installation structure of the solar cell module according to 2,
It is characterized in that a projection for generating a turbulent air flow is provided on the installation surface of the solar cell module.

[0009]

According to the structure of the present invention, the solar cell module is installed such that a ventilation layer through which air flows is provided on the installation surface on which the solar cell module is installed. Since the fins are provided, the generated heat is dissipated to the air layer through the radiation fins, and the solar cell module is effectively cooled. Therefore, especially when the solar cell modules are connected in series, the voltage resistance can be reduced. Further, if the solar cell module is supported by the rail provided on the roof, it becomes suitable for cooling the solar cell module installed on the roof.

[0010] A beam supporting the solar cell module is
If it is constituted by a vertical cross section having a trough-shaped cross section and a ventilation hole through which air flows is formed in a vertical portion of the vertical cross section, the ventilation layer between the roof surface and the solar cell module communicates with the outside, and the ventilation is performed. The air permeability of the layer is improved, and the solar cell module can be cooled smoothly. Also, if a projection is provided on a surface such as a roof surface on which the solar cell module is installed by providing an air layer, the air flowing through the ventilation layer is disturbed, and the solar cell module installed by the turbulent flow is effectively used. While being cooled, the air temperature of the air flowing in the ventilation layer can be averaged to cool each solar cell module uniformly.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. The description will be specifically made using an embodiment. 1 to 5 show a roof with a solar cell module to which an installation structure according to an embodiment of the present invention is applied, FIG. 1 is a perspective view showing the structure of the roof with the solar cell, and FIG. FIG. 3 is an enlarged sectional view taken along line AA of FIG.
Is an enlarged cross-sectional view taken along the line BB of FIG. 1, FIGS. 4A and 4B are enlarged cross-sectional views and a bottom view of a part of the solar cell module,
FIG. 5 is an enlarged sectional view of a main part of FIG.

The roof 1 of a building T, such as a house, is provided with roof panels 1A and 1B. Roof panel 1A
Is a roof panel on the south side, for example, and the roof panel 1B is a roof panel on the north side. The roof panels 1A and 1B are each framed by a combined purlin, a ridge beam, an eave beam, and a rafter (not shown) provided between the beams, and the roof panel 2 is formed on the frame. Have been. Roof surface material 2
The base plate 2a, an asphalt roofing material 2b provided thereon for waterproofing provided thereon, and a non-combustible surface material PVC steel plate (polyvinyl chloride coated steel plate) 2c provided on the asphalt roofing material 2b. . On the roof panel 1A on the south side, a plurality of solar cell modules 3 are installed in a plurality of rows along the flow direction of the roof 1.

On the upper ridge side of the plurality of installed solar cell modules 3, a horizontal (ridge side) fixing member 4a for supporting and fixing the solar cell module modules 3 from the ridge side is provided.
A horizontal (eave side) fixing member 4b for supporting and fixing the solar cell module 3 from the eave side is provided on the lower eave side, and a vertical (kerava side) fixing member 4c, 4c is provided to support and fix the solar cell module 3 from up, down, left, and right. In addition, between rows of adjacent solar cell modules 3 installed in the flow direction of the roof 1,
Each vertical rail 5 is provided, and each adjacent solar cell module 3
Each of the horizontal rails 6 is provided between the upper and lower sides to support and fix the solar cell module 3 respectively.

As shown in FIG. 3, each of the vertical rails 5 is a rail having a trough-shaped concave cross-sectional shape provided in the direction in which the roof panel 1A flows (vertical direction along the inclined surface). The U-shaped shoulder 5a (shoulder) of the crosspiece 5 holds and supports the solar cell module 3. Each of the horizontal rails 6
As shown in FIG. 2, the crosspiece 6 has a U-shaped cross-section provided in a direction perpendicular to the direction in which the roof panel 1A flows (a horizontal direction perpendicular to the inclined surface). The solar cell module 3 is sandwiched and supported by the shoulder 6a (shoulder). Each of the vertical rails 5 and each of the horizontal rails 6 supports each of the solar cell modules 3 in the left, right, up, and down directions. ) A ventilation layer 10 through which air flows is provided and installed on the roof panel (roof surface) 1A apart. As shown in FIGS. 2 and 3, each of the vertical rails 5 has left and right vertical portions 5b, 5b perpendicular to a roof panel (roof surface) 1A of the vertical rail 5, and the shaft center of the rail. The air holes 10 formed on the lower surface of each of the solar cell modules 3 are communicated with the outside through the air holes 11 so that the air layers 10 can communicate with the outside air. It has become.

Each of the solar cell modules 3 is shown in FIG.
As shown in (a), a plurality of crystalline silicon solar cells 3a electrically connected to each other via internal lead wires are
The filling adhesive 3 is arranged vertically and horizontally on the back surface of the transparent glass substrate 3b.
c, and is covered with a back cover 3e whose surface (upper surface) is covered with an insulating film 3d. The back cover (lower surface) 3e of each solar cell module 3 has a structure shown in FIG.
As shown in FIGS. 5A and 5B and FIG. 5, the roof panel 1 hangs perpendicularly to the lower surface of the solar cell module 3.
The radiating fins 12 made of plate-like pieces extending linearly in a direction perpendicular to (or in the flowing direction of) the direction of flow of A are integrally or integrally formed by an adhesive or the like having good thermal conductivity and electrical insulation. It is provided in.

Here, the transparent glass substrate 3a is made of platinum-reinforced glass having excellent light transmittance and impact resistance.
As the filling adhesive 3c, an EVA (ethylene vinyl acetate) film having excellent moisture resistance is used. As the cover material 3e with the heat radiation fins 12, for example, the surface (upper surface) of an aluminum sheet is made of PVF (fluorinated) having excellent insulating properties. Resin-coated metal sheets coated with vinyl resin) are suitable.

Further, the PVC sheet (polyvinyl chloride coated steel sheet) 2c of the roof panel (roof surface) 1A on which the respective solar cell modules 3 are installed has, for example, beads (arc-shaped bulges) formed simultaneously with molding. The protrusions 13 are provided at arbitrary intervals along a direction (or a flowing direction) perpendicular to the flowing direction of the roof panel 1A. In addition,
On the other roof panel 1B of the roof 1, tiles are laid. On the ridge between the roof panel 1A on which the solar cell modules 3 are installed and the roof panel 1B on which tiles are laid, a ridge cover 7 also serving as a waterproof cover is laid, and both panels 1A and 1B are provided. Of the building. In the roof panel 1A, on the vertical (keraba side) fixing members 4c on the left and right keraba sides, keraba waterproof covers 8a, 8a are provided to cover the keraba side of the roof 1. Further, a rain gutter 9 is provided on the eaves side of the roof panel 1A, and the rainwater that has fallen on the roof 1 is formed on the sloped roof panel 1 on which the solar cell module 3 is installed and the gutter-shaped concave vertical rail. 5
The water flows along the gutter 9 to reach the gutter 9 and can be discharged to the outside of the building T through the gutter 9.

According to such a configuration, the vertical rail 5 and the horizontal rail 6
, Each solar cell module 3 is supported and installed at a predetermined distance on the roof panel 1A, and the roof panel 1A
A ventilation layer 10 is provided between the solar cell module 3 and the solar cell module 3.
Vertical rail 5 supporting a solar cell module 3 and having a gutter-shaped cross section
The vertical portion 5b is provided with a ventilation hole 11 formed of a long hole. Therefore, the ventilation layer 10 provided on the lower surface of each solar cell module 3 is easily communicated with the outside and circulates, and the air in the heated ventilation layer 10 passes through the ventilation holes 11 as shown in FIG. Is discharged to the outside. On the lower surface of each solar cell module 3, a radiation fin 12 made of a plate-like piece for dissipating generated heat is provided entirely. Therefore, the chance of contact between the lower surface of the solar cell module 3 and the air in the ventilation layer 10 increases, and the heat generated from each solar cell module 3 can be satisfactorily dissipated to the air layer 10 through the radiation fins 12. . Therefore, the solar cell module 3 can be effectively cooled, and in particular, when the solar cell modules 3 are connected in series, the voltage resistance can be reduced.

A bead (arc-shaped bulge) or the like provided at the time of molding is formed on a PVC steel plate (polyvinyl chloride coated steel plate) 2c of a roof panel (roof surface) 1A on which each solar cell module 3 is installed. A projection 13 is provided. Therefore, turbulence can be generated in the air flowing through the ventilation layer 10, and the lower surface of the solar cell module 3 installed by the turbulence of the air can come into good contact with the air, thereby effectively cooling the solar cell module 3, The air temperature of the air in the layer 10 can be averaged, and each solar cell module 3 can be cooled uniformly.

Although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment. Therefore, even if there is a change in the design or the like without departing from the gist of the present invention, it is of course included in the present invention. The solar cell module of the present invention is not limited to the case where the solar cell module is installed on the roof of a building, and may be provided on another appropriate support plate. For example, the solar cell module may be installed on the roof of a reinforced concrete building. May be. Further, the solar cell module is not limited to the one provided on the roof panel on the south side of the building, and may be provided on the roof panel on the north side, and when the roof panel of the building is provided on the east-west side. , The solar cell module may be provided only on the east side or on the east and west sides. The width (thickness) and the like of the ventilation layer provided below the solar cell module are not limited to those in the above embodiment. In addition, the ventilation hole provided in the vertical beam,
The shape is not limited to the above-mentioned long hole, but may be a simple round hole, a rectangular hole, or a polygonal hole. Moreover, you may make it provide a flow hole not only in a vertical beam but in a horizontal beam.

The heat dissipating fins provided on the lower surface of the solar cell module for dissipating heat are not limited to the above-described embodiment. 6 to 9 are rear views showing modified examples of the radiation fins provided on the lower surface of the solar cell module 3. FIG. FIG.
Shows an example in which a radiation fin 12 </ b> A shaped like a “<” is provided on the lower surface of the solar cell module 3. FIG. 7 shows an example in which a radiation fin 12 </ b> B bent in a meandering manner is provided on the lower surface of the solar cell module 3.
FIG. 8 shows an example in which a triangular wavy radiating fin 12 </ b> C is provided on the lower surface of the solar cell module 3. FIG.
Shows an example in which a radiating fin 12 </ b> D having a sine wave shape is provided on the lower surface of the solar cell module 3. When the illustrated radiation fins 12A to 12D are provided on the lower surface of the solar cell module 3, a radiation effect substantially similar to that of the above-described embodiment can be obtained. The radiation fins provided on the lower surface of the solar cell module may have other various structures according to the purpose of use or the like.

Further, the projections for generating the turbulent air flow provided on the surface such as the roof surface on which the solar cell module is installed are not limited to those shown in the above-described embodiment. It may be provided in a staggered manner, and its shape is not limited. By providing such a projection on the installation surface, the mechanical strength can also be increased.

[0023]

As described above, according to the first aspect of the present invention, on the installation surface on which the solar cell module is installed,
The solar cell module is installed such that a ventilation layer through which air flows is provided, and heat radiation fins for dissipating heat are provided on the lower surface of the solar cell module. And the solar cell module can be cooled effectively. Therefore, even when solar cell modules are connected in series,
Voltage resistance can be reduced.

According to the second aspect of the present invention, the solar cell module is supported by the rails provided on the roof and is installed so as to provide an air layer on the roof surface, thereby cooling the solar cell module installed on the roof. It becomes suitable.

According to the third aspect of the present invention, a ventilation hole through which air flows is formed in the vertical portion of the vertical rail supporting the solar cell module, so that the outside and the ventilation layer communicate with each other and flow inside the ventilation layer. The air permeability is improved, and the solar cell module can be cooled smoothly.

According to the fourth aspect of the present invention, by providing projections on the installation surface such as a roof surface on which the solar cell module is installed, the air flowing in the air layer is disturbed, and the turbulent air flow is generated. Thus, the installed solar cell modules can be effectively cooled, and the air temperature of the air in the air layer can be averaged to uniformly cool each solar cell module.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a roof portion to which a solar cell module installation structure according to an embodiment of the present invention is applied.

FIG. 2 is an enlarged sectional view taken along line AA of FIG.

FIG. 3 is an enlarged sectional view taken along line BB of FIG. 1;

FIG. 4 is an enlarged sectional view and a bottom view of a part of the solar cell module.

FIG. 5 is an enlarged sectional view of a main part of FIG. 2;

FIG. 6 is a partial rear view partially showing a rear surface of a solar cell module which is a modification of the embodiment.

FIG. 7 is a partial rear view partially showing a rear surface of a solar cell module which is another modified example of the embodiment.

FIG. 8 is a partial rear view partially showing a rear surface of a solar cell module which is still another modification of the embodiment.

FIG. 9 is a partial rear view partially showing a rear surface of a solar cell module which is still another modification of the embodiment.

FIG. 10 is a perspective view for explaining a conventional technique.

11 is an enlarged sectional view of a main part of FIG.

[Explanation of symbols]

Reference Signs List 3 solar cell module 5 vertical rail 5a, 6a shoulder 5b vertical part 6 horizontal rail 10 ventilation layer 11 ventilation hole 12, 12A, 12B, 12C, 12D radiation fin 13 projection

Claims (4)

[Claims] An airflow layer through which air flows is provided between the solar cell module and the installation surface by installing the solar cell module on the installation surface of the solar cell module via a support member. An installation structure for a solar cell module, comprising: a radiation fin that dissipates heat provided on a lower surface of the solar cell module. 2. The installation surface of the solar cell module is constituted by a roof surface of a building, and the support member is constituted by a bar provided on the roof, and the solar cell module is supported via the bar. The installation structure for a solar cell module according to claim 1, wherein the solar cell module is installed such that a ventilation layer is provided on a roof surface. 3. The crosspiece is formed of a vertical crosspiece having a trough-shaped cross section, and a solar cell module is supported by a shoulder of the vertical crosspiece.
The installation structure for a solar cell module according to claim 2, wherein a ventilation hole through which air flows is formed in a vertical portion of the vertical rail. 4. The installation structure for a solar cell module according to claim 1, wherein a projection for generating turbulent air flow is provided on the installation surface of the solar cell module.