JPH1046767A - Solar battery panel and roof structural body with solar battery panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solar battery panel of simple structure allowing an easy erection work by superposing the first substrate and the second substrate on top of each other in such a state as dislocated from each other. SOLUTION: This solar battery panel 20 is formed out of the first substrate 21 and the second substrate 22 formed to be translucent and superposed on top of each other in such a state as dislocated from each other, a thin film solar battery layer formed on the first substrate 21, a translucent synthetic resin filler provided between the first substrate 21 and the second substrate 22, and an elastic cushion material laid between the side of the second substrate 22 faced to the first substrate 21 as well as on the opposite side of the second substrate 22. Then, each of the solar battery panel 20 so formed is arranged so that the first superposing allowance 21A and the second superposing allowance 22A are overlapped on each other between the adjacent panels 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a solar cell panel and a roof structure with a solar cell panel.

[0002]

2. Description of the Related Art Conventionally, a solar cell is sometimes provided on a roof of a building or the like in order to effectively utilize solar energy as electricity. As a roof equipped with such solar cells, the present applicant uses a solar panel in which a vertical frame and a horizontal frame are attached to the periphery of a waterproof case containing a predetermined number of solar cells, and fixed along the slope of the roof. A structure in which a vertical frame of a solar cell panel is supported on the rail-shaped support member provided (JP-A-7-180310).

Further, the present applicant has applied a roofing provided with a solar cell on the surface thereof to a base material of a roof, and arranged a glass plate so as to partially overlap a rail-like support provided side by side on the roofing. Proposed a structure in which the glass plate is fixed to the support with bolts and caps at the overlapped portion (Japanese Patent Application No. Hei 7-78764).

[0004]

However, in the structure using the solar cell panel, the structure of the solar cell panel itself is complicated, so that the manufacturing cost is increased and the support members are arranged on the roof surface at predetermined intervals. However, there is a problem that it takes time and labor to arrange the solar cell panels. Further, even in the structure using a glass plate, a supporter must be provided on the roofing, and the glass plate must be positioned and arranged so as to partially overlap, which is troublesome in construction.

An object of the present invention is to provide a solar cell panel having a simple structure which can be easily constructed, and a roof structure with a solar cell panel.

[0006]

Referring to the drawings, a solar cell panel according to the present invention will be described with reference to the drawings. At least one of the solar cell panel has a first substrate 21 and a second substrate 21 which are superimposed and shifted from each other. It is characterized by having two substrates 22 and a thin-film solar cell layer 23 provided on one of the opposing surfaces of the first substrate 21 and the second substrate 22.

According to the present invention, the first substrate 21 and the second substrate 22 are overlapped to form the solar cell panel 20.
The strength of the solar cell panel 20 can be improved, and the conventional case, vertical frame, and horizontal frame are not required, so that the structure of the solar cell panel 20 can be simplified and the manufacturing cost can be reduced. Further, since the thin-film solar cell layer 23 is formed directly on the first substrate 21 or the second substrate 22, the solar cell panel 20 can be formed easily and at low cost.

Since the first substrate 21 and the second substrate 22 are shifted from each other and overlapped, the solar cell panel 20
Are arranged, a portion of the first substrate 21 protruding from the second substrate 22 (first overlapping margin 21A) and a portion of the second substrate 22 protruding from the first substrate 21 (second overlapping margin 22A).
A) can be overlapped between adjacent solar cell panels 20. Therefore, the solar cell panel 20 is placed such that the first overlap allowance 21A and the second overlap allowance 22A overlap.
Are arranged, the waterproofness and strength between the solar cell panels 20 can be secured. Further, the solar cell panels 20 can be easily positioned, and can be easily installed without using a conventional support member or support. With these, the above object is achieved.

The first substrate 21 and the second substrate 22
It is desirable that a synthetic resin filler 24 having a light-transmitting property is interposed therebetween.

By interposing such a synthetic resin filler 24 having a light-transmitting property, the first substrate 21 and the second substrate 22 can be easily formed without hindering light from entering the thin-film solar cell layer 23. Can be glued. Further, even if the substrates 21 and 22 are cracked, they are not scattered, so that it is possible to prevent the spread of fire to an adjacent house, and fire prevention performance can be obtained only by arranging the solar cell panels 20.

The first substrate 21 and the second substrate 22 have a rectangular shape and a plane shape of substantially the same size, and the second substrate 22 extends along one side of the first substrate 21. Alternatively, they may be staggered in one direction.

When the substrates 21 and 22 are shifted in one direction and overlapped, the first overlap margin 21A and the second overlap margin 22A are formed along two sides orthogonal to the shifted directions. Become. Therefore, if electrodes are provided on the overlapping margins 21A and 22A, electrical connection between adjacent solar cell panels 20 can be easily performed only by arranging the solar cell panels 20. Further, since both sides of the first substrate 21 and the second substrate 22 along the shifted direction are aligned, the solar cell panels 2 adjacent in the direction orthogonal to the shifted direction are aligned.
During the time interval 0, a waterproof treatment can be easily performed by the dry seal 45.

The first substrate 21 and the second substrate 22 have a rectangular shape and a planar shape of substantially the same size,
The second substrate 22 may be staggered in two directions along two orthogonal sides of the first substrate 21.

When the substrates 21 and 22 are displaced in two directions in this manner, overlapping margins 21A and 22A are formed on two orthogonal sides of the substrates 21 and 22, respectively. Solar cell panel 2 whose entire periphery is adjacent
Since it is superimposed on 0, more excellent waterproofness can be obtained. Also, if the electrodes 32 are provided on the overlapping margins 21A and 22A,
Just by arranging the solar cell panels 20 with the overlapping margins 21A and 22A overlapping each other, electrical connection can be freely made between all adjacent solar cell panels 20. Further, the solar cell panels 20 can be arranged in the same manner as a conventional roof tile, and can be easily constructed.

The portion of the first substrate 21 protruding from the second substrate 22 and the portion of the second substrate 22 protruding from the first substrate 21 can be fitted and fitted to each other. It may be configured to include fitting members 41 and 42 that can be electrically connected in some cases.

The first overlap allowance 21A (the portion of the first substrate 21 protruding from the second substrate 22) and the second overlap allowance 22A (the second substrate allowance) including such fitting members 41 and 42. 22 protruding from the first substrate 21), the solar cell panels 20 can be reliably connected and fixed to each other by simply fitting the fitting members 41 and 42, and electrical connection can be easily performed. Can be. In addition, the first overlap allowance 21A
And the second overlap margin 22A are in contact with each other via the fitting members 41 and 42, so that the first and second substrates 21 and 22 are in direct contact with each other. Cracks can be prevented.

Further, a portion of the first substrate 21 protruding from the second substrate 22 and a portion of the second substrate 22 protruding from the first substrate 21 are provided with mounting holes 3.
It is desirable that 3A and 33B be formed.

In this way, the mounting holes 33A, 33
The solar cell panel 20 can be fixed to an installation surface such as a roof surface via B, and the solar cell panel 20 can be installed using existing fasteners such as screws 34 and 35 and nails.

It is preferable that an elastic cushioning material 25 is provided on one of the surfaces of the first substrate 21 and the second substrate 22 opposite to the facing surface.

Thus, when the solar cell panel 20 is fixed with the surface on the cushioning material 25 side facing the installation surface such as a roof surface, the solar cell panel 20 is fixed to the installation surface via the cushioning material 25. Thus, the impact applied to the substrates 21 and 22 can be reduced. Therefore, even if an operator gets on the solar cell panel 20 during maintenance or the like, the substrates 21 and 22 are not broken.

On the other hand, the roof structure 10 with a solar cell panel according to the present invention is characterized in that the aforementioned solar cell panels 20 are arranged along the roof surface.

In the present invention, since the solar cell panels 20 in which the first substrate 21 and the second substrate 22 are shifted from each other are arranged, the first overlap margin 21A and the second overlap margin 22A are adjacent to each other. By arranging the solar cell panels 20 so that the solar cell panels 20 overlap each other, waterproofness between the solar cell panels 20 is ensured, and the strength of the entire roof structure 10 can be increased. In addition, the solar cell panel 20 can be easily positioned, and can be easily installed without using a conventional support member or support. With these, the above object is achieved.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a roof structure 10 with solar cell panels according to the present embodiment. The roof structure 10 is, for example, a roof panel, a roof base material 11 provided at an angle, a roofing 12 stretched over the roof base material 11, and a roofing 12 serving as a roof surface.
And a solar cell panel 20 arranged above.

As shown in FIGS. 2 and 3, the solar cell panel 20 includes a first substrate 21 and a second substrate 22 which are translucent and are staggered with respect to each other; 21 and a thin-film solar cell layer 23 provided on a surface facing the second substrate 22.

The first substrate 21 and the second substrate 22
The second substrate 2 has a rectangular shape and a planar shape of substantially the same size.
2 are shifted from each other in two directions along two orthogonal sides of the first substrate 21. The first substrate 21 and the second substrate 22 are formed of a light-transmitting material such as glass or acrylic resin. The thin-film solar cell layer 23 provided on the first substrate 21 is, for example, an amorphous Si layer formed directly on the first substrate 21 by vapor phase growth.
And electrodes.

A synthetic resin filler 24 having a light transmitting property is interposed between the first substrate 21 and the second substrate 22. The synthetic resin filler 24 is made of EVA (Ethylene
It is made of a transparent synthetic resin such as Vinylacetate) or PVB (Poly Vinylbutylol). First substrate 21 and second substrate 2
2 are bonded to each other using the synthetic resin filler 24 as an adhesive layer. The substrates 21 and 22 are bonded to each other by applying heat and pressure while sandwiching the synthetic resin filler 24.

The surface of the second substrate 22 opposite to the surface facing the first substrate 21 is provided with a planar cushioning material 25 having elasticity.
Is provided. The cushioning material 25 is made of an elastomer,
For example, it is composed of EPDM (ethylene-propylene-diene terpolymer blend), butyl rubber, rubber used as a building material, elastomer containing silicon, and the like.

As shown in FIG. 3, a first overlapping margin 21A which is a portion of the first substrate 21 protruding from the second substrate 22 is provided.
And a second overlapping margin 22A, which is a portion of the second substrate 22 protruding from the first substrate 21, has a solar cell panel 20
Mounting holes 33 for fixing the
A, 33B are formed. These first piles 2
The packing material 31 is attached to each of the 1A and the second overlap allowance 22A along the periphery thereof. Also,
An electrode 32 made of a metal foil such as a copper foil is provided on the first overlap allowance 21A and the second overlap allowance 22A.

As shown in FIG. 4, such a solar cell panel 20 has a first overlap allowance 21A and a second overlap allowance 22A.
A are arranged so that adjacent solar cell panels 20 overlap each other. Thereby, each electrode 32 of the overlapped first overlap allowance 21A and second overlap allowance 22A
Are overlapped so that electrical connection can be made between adjacent solar cell panels 20.

The mounting hole 33A (see FIG. 3) formed in the first overlapping margin 21A is communicated with the mounting hole 33B of the second overlapping margin 22A of the adjacent solar cell panel 20. As shown in FIG. 5, the first substrate 21 and the second substrate 22 pass through the communicating mounting holes 33 </ b> A, 33 </ b> B and are screwed into the roofing 12 and the roof base material 11. It is fixed on the roofing 12 by a fastener. As shown in FIG. 4 and FIG.
Mounting hole 33 of second overlap allowance 22A not communicated with 3A
A fixing tool such as a screw 35 is inserted into B and screwed into the roofing 12 and the roof base material 11.

As shown in FIGS. 5 and 6, the portion where the first overlap allowance 21A and the second overlap allowance 22A overlap is
It is surrounded by the packing material 31 provided on each of the overlap allowances 21A and 22A so that water entering between the solar cell panels 20 can be blocked.

In the present embodiment configured as described above, the solar cell panels 20 manufactured in advance are arranged and fixed on the roofing 12. That is, the first solar cell panel 20 is positioned and arranged on the roofing 12, and the second overlap margin 22 </ b> A is fixed on the roofing 12 with the screw 35. Subsequently, the next solar cell panel 20 is arranged so that the first overlap allowance 21A overlaps the second overlap allowance 22A of the fixed solar cell panel 20, and is fixed with a screw 34 at the overlapped portion. The second overlap margin 22 </ b> A of the panel 20 is fixed to the roofing 12 with the screw 35. Alternatively, the next solar cell panel 20 is arranged such that the second overlap margin 22A overlaps the first overlap margin 21A of the fixed solar cell panel 20, and is fixed with the screw. In this manner, the solar cell panel 20 is constructed by arranging and fixing the next solar cell panel 20 to the fixed solar cell panel 20 so that the overlapping margins 21A and 22A overlap each other. The solar cell panel 20
May be performed at a factory or at a construction site.

According to this embodiment, the following effects can be obtained. That is, since the solar cell panel 20 is configured by stacking the first substrate 21 and the second substrate 22, the strength of the solar cell panel 20 can be improved, and the conventional case, vertical frame, and horizontal frame are not required. In addition, the structure of the solar cell panel 20 can be simplified, and the manufacturing cost can be reduced. In addition, the thin-film solar cell layer 2
Since 3 is formed directly on the first substrate 21, the solar cell panel 20 can be formed easily and at low cost.

Then, the first substrate 21 and the second substrate 22 are shifted from each other and overlapped with each other, and the solar panel 20 is overlapped with the adjacent solar cell panels 20 so that the first overlap margin 21A and the second overlap margin 22A overlap each other. Since the battery panels 20 are arranged, waterproofness and strength between the solar battery panels 20 can be secured. Further, the solar cell panels 20 can be easily positioned, and can be easily installed without using a conventional support member or support.

Further, since the synthetic resin filler 24 having a light-transmitting property is interposed between the first substrate 21 and the second substrate 22, light is prevented from being incident on the thin-film solar cell layer 23. The first substrate 21 and the second substrate 22 can be easily bonded without the need. Moreover, even if the substrates 21 and 22 are broken, they do not scatter, so that it is possible to prevent the spread of fire to the adjacent house, and fire prevention performance can be obtained only by arranging the solar cell panels 20.

Then, the first substrate 21 and the second substrate 22 are formed in a planar shape having a rectangular shape and substantially the same size, and the second substrate 22 is formed along two orthogonal sides of the first substrate 21. Since the layers are shifted in the direction, overlapping margins 21A and 22A are formed on two orthogonal sides of the substrates 21 and 22, respectively, and the entire periphery of the solar cell panel 20 is overlapped with the adjacent solar cell panel 20. , And excellent waterproofness can be obtained. Further, since the electrodes 32 are provided on the overlapping margins 21A and 22A, the solar cell panel 20 is overlapped with the overlapping margins 21A and 21A.
The electric connection can be freely and easily made between all the adjacent solar cell panels 20 only by arranging the superposed 22A. Furthermore, since the solar cell panels 20 can be arranged in the same manner as a conventional roof tile, it can be easily constructed.

Further, since mounting holes 33A and 33B are formed in the first overlap margin 21A and the second overlap margin 22A, the solar cell panel 20 can be connected through these mounting holes 33A and 33B. The screws 34, 35 can be fixed.
The solar cell panel 20 can be installed using existing fasteners such as nails and nails.

Then, the first substrate 21 of the second substrate 22
On the surface opposite to the surface opposite to
Is provided, the second substrate 22 is fixed on the roofing 12 via the cushioning material 25, and the impact on the substrates 21 and 22 is reduced. Therefore, even if an operator gets on the solar cell panel 20 during maintenance or the like, the substrates 21 and 22 are not broken.

It should be noted that the present invention is not limited to the above-described embodiment, but includes other configurations that can achieve the object of the present invention, and also includes the following modifications.
That is, in the embodiment, the adjacent solar cell panels 20 are connected by the screws 34 penetrating the first overlap allowance 21A and the second overlap allowance 22A, but as shown in FIG. And the second overlapping margin 22A can be fitted to each other and can be electrically connected by fitting.
The solar cell panels 20 may be connected to each other by being configured to include the components 1 and 42 and fitting them together. These fitting members 41 and 42 are connected to the thin-film solar battery layers 23 of the respective solar battery panels 20 so that the solar battery panels 20 can be connected to each other simply by fitting them.

In this manner, the solar battery panels 20 can be reliably and easily connected and fixed by simply fitting the fitting members 41 and 42, and electrical connection can be easily performed. Further, since the screw 34 that penetrates the first overlap allowance 21A and the second overlap allowance 22A is not required, the first overlap allowance 21A does not need to be provided with the mounting hole 33A, and higher waterproof performance can be achieved. can get. Further, the first overlap margin 21A and the second overlap margin 22A are connected to the fitting members 41 and 42.
, The first and second substrates 21 and 22 are brought into direct contact with each other,
2 can be prevented.

In the above embodiment, the second substrate 2
2 are shifted in two directions along two orthogonal sides of the first substrate 21, but the second substrate 22 is moved in one direction along one side of the first substrate 21 as shown in FIG. It may be shifted and overlapped. In such a solar cell panel 20, a first overlap margin 21A is formed along two sides orthogonal to the shifted direction.
And a second overlap margin 22A is formed, and the first substrate 21
The two sides of the second substrate 22 along the shifted direction are aligned. Electrodes (not shown) are provided on the overlap allowances 21A and 22A, whereby electric connection between the solar cell panels 20 can be easily performed only by arranging the solar cell panels 20. Further, by interposing a band-shaped packing material 45, which is a dry seal, between the solar cell panels 20 adjacent to each other in a direction orthogonal to the shifted direction, it is possible to easily perform the waterproofing treatment.

Although the thin-film solar cell layer 23 of the solar cell panel 20 of the above embodiment is provided on the first substrate 21,
Since it may be provided on either one of the opposing surfaces of the first substrate 21 and the second substrate 22, it may be provided on the opposing surface of the second substrate 22 with the first substrate 21. In addition, the first substrate 21 and the second substrate 22 of the embodiment are formed of a material having a light transmitting property.
The material of the second substrate 22 disposed on the second side may not be a material having translucency, and may be formed of, for example, a synthetic resin or the like, or formed of a high-strength material such as a metal. According to this, the solar cell panel 20
Can be improved in strength. In short, as long as the substrate on the light receiving side has translucency, the material of the substrate on the side not directly receiving light is arbitrary. However, the solar cell panel 20
Is installed on a wall surface of a building and the like, and light from inside and outside is received from both sides, both substrates 21 and 22 are formed of a material having translucency.

Further, the size and thickness of the substrates 21 and 22 are not particularly limited. For example, the first substrate 21 and the second substrate 22 may have different thicknesses. However, if the same substrate is used for the first substrate 21 and the second substrate 22, the manufacturing cost can be reduced.

In the above-described embodiment, the solar cell panel 20 is installed on the roofing 12 stretched on the roof base material 11, but may be directly attached to the roof base material 11.

The roof structure 10 is not limited to a roof panel, but may be a roof unit or a roof part of a conventional method fixed to rafters. Any structure can be applied as long as it is a constituent structure. The installation place of the solar cell panel 20 is not limited to the roof, for example, may be installed on a curtain wall,
Alternatively, it may be arranged on a gantry installed on the ground or on the roof.

[0046]

As described above, according to the present invention,
Since the first substrate and the second substrate are stacked to form a solar cell panel, the strength of the solar cell panel can be improved, and the conventional case, vertical frame, and horizontal frame are not required, and the structure of the solar cell panel is reduced. Can be simplified and the manufacturing cost can be reduced. Further, since the thin-film solar cell layer is formed directly on the first substrate or the second substrate, a solar cell panel can be formed easily and at low cost.

Since the first substrate and the second substrate are shifted from each other and overlapped with each other, when the solar cell panels are arranged, a portion of the first substrate protruding from the second substrate (first overlap margin) and the first substrate are overlapped. The portion of the two substrates protruding from the first substrate (second overlapping margin) is overlapped between adjacent solar cell panels. Therefore, by arranging the solar cell panels so that the first overlap allowance and the second overlap allowance overlap, the waterproofness and strength between the solar cell panels can be ensured, and the solar cell panels can be easily separated from each other. Positioning can be performed, and it can be easily installed without using a conventional support member or support tool.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a sectional view showing the solar cell panel of the embodiment.

FIG. 3 is a perspective view showing the solar cell panel of the embodiment.

FIG. 4 is a schematic plan view showing an arrangement of the solar cell panel of the embodiment.

FIG. 5 is a sectional view showing a fixing structure of the solar cell panel of the embodiment.

FIG. 6 is a sectional view showing a fixing structure of the solar cell panel of the embodiment.

FIG. 7 is a sectional view showing a modification of the present invention.

FIG. 8 is a perspective view showing another modification of the present invention.

[Explanation of symbols]

 Reference Signs List 10 roof structure with solar cell panel 20 solar cell panel 21 first substrate 21A first overlap margin 22 second substrate 22A second overlap margin 23 thin-film solar cell layer 24 synthetic resin filler 25 buffer 33A, 33B Mounting holes 41, 42 Fitting member

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Hirofumi Ida 2-4-5 Takaido Higashi, Suginami-ku, Tokyo Inside Misawa Homes Co., Ltd. (72) Inventor Norikazu Sakai 2-4.5 Takaido Higashi, Suginami-ku, Tokyo No. Within Mi Sawa Home Co., Ltd. (72) Inventor Hiromichi Kuroda 2-4-5 Takaido East, Suginami-ku, Tokyo Mi Sawa Home Co., Ltd. (72) Naoko Oya 2-4-5 Takaido East, Suginami-ku, Tokyo Mi Inside Sawa Home Co., Ltd. (72) Inventor Tadao Kasahara 2-6-1 Nishi Shinjuku, Shinjuku-ku, Tokyo Shinjuku Sumitomo Building 19F MSK Co., Ltd. (72) Inventor Akio Kasahara 2 Nishi-Shinjuku, Shinjuku-ku, Tokyo 6-1-1 Shinjuku Sumitomo Building 19F MSK Co., Ltd. (72) Inventor Masao Shimozato 2 Nishishinjuku, Shinjuku-ku, Tokyo 6-1 Shinjuku Sumitomo Building 19F MSK Co., Ltd. (72) Inventor Fumiki Yamaguchi 2-6-1 Nishishinjuku, Shinjuku-ku, Tokyo Shinjuku Sumitomo Building 19F MSK Co., Ltd. (72) Inventor Kengo Wakabayashi 19F Shinjuku Sumitomo Bldg. 2F, 2-6-1 Nishi Shinjuku, Shinjuku-ku, Tokyo

Claims (8)

[Claims] At least one of a first substrate and a second substrate having a light-transmitting property and being staggered from each other, and an opposing surface of the first substrate and the second substrate A solar cell panel comprising: a thin-film solar cell layer provided on any one of the solar cell panels. 2. The solar cell panel according to claim 1, wherein a translucent synthetic resin filler is interposed between the first substrate and the second substrate. Solar panel. 3. The solar cell panel according to claim 1, wherein the first substrate and the second substrate have a rectangular shape and a planar shape of substantially the same size, and the second substrate has a rectangular shape. Are shifted from each other in one direction along one side of the first substrate. 4. The solar cell panel according to claim 1, wherein the first substrate and the second substrate have a rectangular shape and a planar shape of substantially the same size, and the second substrate Are shifted from each other in two directions along two orthogonal sides of the first substrate. 5. The solar cell panel according to claim 1, wherein a portion of the first substrate protruding from the second substrate and the first substrate of the second substrate. The solar cell panel is characterized in that the portion protruding from the substrate includes a fitting member that can be fitted to each other and that can be electrically connected by fitting. 6. The solar cell panel according to claim 1, wherein a portion of the first substrate protruding from the second substrate and a portion of the second substrate that protrudes from the second substrate. A solar cell panel, wherein a mounting hole is formed in a portion protruding from the substrate. 7. The solar cell panel according to claim 1, wherein at least one of a surface of the solar cell panel opposite to a facing surface of the first substrate and the second substrate has A solar cell panel, comprising a cushioning material having elasticity. 8. A roof structure with solar cell panels, wherein the solar cell panels according to any one of claims 1 to 7 are arranged along a roof surface.