JP2001094137A - Solar cell module integrated with roof material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solar cell module integrated with a roof material where execution is easy and a water-proofness is not impaired. SOLUTION: A solar cell panel 2 comprising a plurality of photoelectric conversion elements inside of it is provided on a rear-surface metal plate 3, which is provided with a falling part where an eaves-side end part extends downward and a rising part where a ridge-side end part extends upward, and the rising part is engaged with the falling part of another roof-material in combination with a solar cell module 1 which is adjacently provided in the upper part thereof. Here, the rear-surface metal plate is provided with an extension part 33 which extends toward a ridge side from the rising part, with a terminal box 7 provided on the extension part 33 at a position deviated from the center and end parts in cross-beam direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a roofing-integrated solar cell module that can be used as a roofing material.

[0002]

2. Description of the Related Art Conventionally, various apparatuses for arranging a solar cell panel on a roof and performing solar power generation have been proposed. As a method of installing these solar cell panels, a method of installing a gantry on a tile and fixing the solar cell panel on the gantry,
Alternatively, a metal plate is laid on the base plate, a gantry is installed on the base plate, and the solar cell panel is fixed on the gantry. There is a method of roofing a solar cell panel thereon, and the like.

[0003] The solar cell panel itself is used as a roof material,
A structure mounted on a field board is disclosed in JP-A-9-268715 (Int. CL E04D 3/362).

A roof material-integrated solar cell module 100 used as the above-mentioned roof material is, as shown in FIG.
A crystalline silicon, electrically connected in series or in parallel with connection leads such as solder or copper foil between a front substrate 101 made of glass and a back metal plate 102 made of a colored zinc-iron plate or a stainless steel plate, A solar cell 103 made of amorphous silicon or the like is arranged, and the front substrate 101 and the solar cell 1 are arranged.
3 and between the back metal plate 102 and the solar cell 103 with a sealing material 104 made of ethylene vinyl acetate resin (EVA) interposed therebetween.

[0005] A falling portion 106 is provided at the eave-side end of the back metal plate 102, and a rising portion 107 is provided at the ridge-side end, and the corresponding falling portion 106 and rising portion 107 of the other solar cell panel 1 are provided. Engage with.

Power is taken out of the solar cell 103 by providing a through hole or a notch in the back metal plate 102, attaching the terminal box 105 to the back metal plate 102, and connecting a lead wire through the through hole of the back metal plate. This is performed by inserting and connecting a lead wire to the terminal box 105.

The roof-integrated solar cell modules 100 configured as described above are installed on the roof as follows. First, the solar cell module 100 is placed on the
And fix the solar cell module 100 using a screw or the like. Then, the falling part 106 of the solar cell module 100 located on the upper side (ridge side) is engaged with the rising part 107 of the solar cell module 100 located on the lower side (eave side). The solar cell module 1 is attached to the base plate 110 using screws.
00 is fixed. Hereinafter, by sequentially performing this operation, the solar cell modules 100 are arranged in a zigzag manner on the base plate 110.

In the above-described solar cell module with integrated roofing material 100, since the power cable is led out of the terminal box 105 provided on the back side of the back metal plate 102, the solar cell module 100 has the following structure.
In order to make the connection between them, it was necessary to provide a hand between the solar cell module and the base plate and to perform wiring on the back side, and the workability was extremely poor.

Therefore, as shown in FIG. 10, an extending portion 102a is provided on the ridge side of the rising portion 107 of the back metal plate 102 so as to be covered with the solar cell module 100 installed adjacently above. Solar cell 1 in section 102a
There is a configuration in which a terminal box 105 for extracting the electric power from the power supply 03 to the outside is provided, and the power cable 120 is led out from the front side.

As shown in FIG. 10, the terminal box 105 is provided at the center of the solar cell module 100 in the beam direction (the direction A in the figure). In addition, the connectors 121 provided on the power cable 120 led out from the terminal box 105 are located at both side ends of the solar cell module 100, and are adjacent to the right and left solar cell modules 10 at the side ends of the solar cell module 100. Is electrically connected.

[0011]

By the way, when the solar cell modules 100 provided with the terminal box 105 at the center in the girder direction on the front surface side are staggered on a field board 110, Are located at the butting portions of the solar cell modules 100... Located at the upper side. Since a drain plate for preventing water leakage is arranged at the abutting portion, the solar cell module 100 located on the upper side and the solar cell module 1 located on the lower side
In the recent solar cell module 100 in which the gap between the solar cell module 00 and the battery box 00 has been reduced, the presence of the terminal box 105 has caused problems such as hindering the installation of the drain board. Further, even if the drain board can be installed, there is a problem that the drain box is deformed by the terminal box 105 to cause water leakage, and the terminal box 105 is damaged to cause a short circuit.

As shown in FIG. 10, a connector 1 of a power cable 120 led out of a terminal box 105 is provided.
21 is located at the end of the solar cell module 100, the connector 121
Are present at the abutting portions of..., And mechanical stress on the connector is easily generated by the draining plate, and there is a problem that the connector 105 is damaged.

The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a roof material-integrated solar cell module which is easy to construct and does not impair waterproofness as a roof material. Aim.

[0014]

According to the present invention, a solar cell panel having a plurality of photoelectric conversion elements is provided on a back metal member, and an eave-side end portion of the back metal member extends downward. A roof member is provided with a falling portion and a rising portion having a ridge-side end extending upward, and a falling portion of another roofing-integrated solar cell module disposed adjacent to the rising portion and adjacent above. A body solar cell module, wherein the back metal member is provided with an extending portion extending from the rising portion to the ridge side, and a terminal is provided on the extending material portion at a position displaced from the center and the end in the girder direction. A box is arranged.

As described above, by disposing the terminal box from the center and the end of the solar cell module in the girder direction, the terminal box can be attached to a drain board when the solar cell module is installed in a zigzag manner. It is possible to prevent deformation of the draining board or the like without being in the way.

The terminal box is provided with a power cable having a connector for connecting to another roofing-integrated solar cell module, and the connector located at least on one side is connected to the roofing-integrated solar cell module in the beam direction. It is good to constitute so that it may be located inside an end.

By arranging the connector inside from the end of the solar cell module in the beam direction, the connection between the solar cell modules can be made at a position other than the position of the butt portion of the solar cell module.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of a roofing material integrated solar cell module according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, and FIG. 3 is a front view.

As shown in the figure, a roof material-integrated solar cell module 1 according to the present invention has a plurality of photoelectric conversion elements inside and is integrated with a solar cell panel 2 integrated so as to obtain a predetermined DC voltage. And a back metal plate 3 made of a colored zinc-iron plate, a stainless steel plate or the like are integrated using an ethylene vinyl acetate (EVA) resin or the like. Note that a coating film for insulation treatment is provided on the surface of the back metal plate 3.

The solar cell panel 2 includes, for example, a transparent conductive film on a translucent glass substrate as a support, and a pin inside.
A photoelectric conversion layer made of an amorphous silicon semiconductor having a junction, and a back metal electrode film are formed by laminating in this order. The transparent conductive film, the photoelectric conversion layer, and the back metal are divided from each other by a dividing line, a plurality of photoelectric conversion elements are formed on a translucent glass substrate, and a predetermined DC voltage is generated by cascading these photoelectric conversion elements. Is output.

A resin coat is formed on the back metal electrode film of the solar cell panel 2 for the purpose of waterproofing and moisture proofing. This resin coat is formed, for example, by applying an epoxy resin paste on the back metal electrode film by a screen printing method, and then baking it. A part of this resin coat has been removed to take out the output terminals, and the exposed positive and negative output terminals have lead wires 6 made of copper foil or the like.
Are soldered to extract power.
It is also possible to use a lead wire 6 that has been plated with solder in advance. Further, for example, a copper foil tape insulated by sandwiching a solder-plated rectangular copper wire with an insulating film made of polyphenylene sulfide as a base material may be used.

The lead wire 6 for taking out, which is electrically connected to the output terminal of the solar cell panel 2, is formed by using an insulating tape.
After fixing on the resin coat, the EVA resin 4 is disposed between the resin coat side of the solar cell panel 2 and the back metal plate 3. Then, the two are adhered and integrated by a vacuum lamination method using an EVA resin. In addition to the above-described method, the two may be bonded using an adhesive such as a silicone resin or butyl rubber.

As described above, since the back surface side of the roof material-integrated solar cell module 1 is constituted by the back metal plate 3 made of a metal plate such as a colored zinc-iron plate or a stainless steel plate,
The back metal plate 3 functions as a non-combustible material, and is excellent in fire resistance.

The back metal plate 3 according to the present invention has a falling portion 31 having an eave side end bent downward, a rising portion 32 having a ridge side end bent upward, and an extending portion further extending to the ridge side. 33 are formed. An end portion of the falling portion 31 is provided with an engaging portion 31a bent to engage with the rising portion 32 of another roof material-integrated solar cell module 1 located below. In addition, the rising portion 32 is formed with a folded portion 32a that engages with the engaging portion 31a of the falling portion 31 of another roof material-integrated solar cell module 1 located above.

Further, at the end of the extending portion 33, a folded portion 34 bent upward is provided.

The falling part 31 and the rising part 3
The 2, the extended portion 33 and the folded portion 34 are formed by, for example, bending a metal plate by press working or the like.

The above-mentioned back metal plate 3 can of course be formed by other than press working. For example, a separately formed falling portion 31, rising portion 32, and folded portion 34 are attached to a flat metal plate by spot welding or the like. Back metal plate 3 can be formed.

The folded portion 3 of the rising portion 32 described above
1a is the engaging portion 31 of the falling portion 31 as described above.
a, but in order to reduce the level difference from the solar cell module disposed thereon,
It is formed so as to be located slightly above the glass surface.

In this embodiment, a terminal box 7 for taking out electric power is placed on the metal plate of the extending portion 33. The rising portion 32 is provided with a hole (not shown) through which a lead wire 6 for taking out an output from the solar cell panel 2 is inserted, and a positive / negative lead wire lead from the solar cell panel 2 is provided. 6 are connected to the terminals in the terminal box 7 through the holes.

The terminal box 7 is adhered to the metal plate of the extending portion 33 by using an adhesive such as silicone resin or butyl rubber or an adhesive layer 8 such as an adhesive tape. At this time, the terminal box 7 is positioned in the digit direction of the solar cell module 1 (A in FIG. 1).
Direction), and is bonded and fixed so as to avoid the position where the draining plate arranged when butted from the end portion is located at a position shifted from the center portion in the (direction).

Then, the lead wires 6 and the terminal portions of the terminal box 7 are connected by soldering, and the exposed portions of the electrodes are covered with a silicone resin, and then the terminal box 7 is covered.

Then, the power cable 9 is connected to the terminal box 7.
It is screwed or soldered to the terminal portion inside and is electrically connected and led out. When connecting the solar cell modules 1 in parallel in advance, the power cable 9 is provided with two connectors 10 and two power cables 9 each having positive and negative polarities so that one positive and one negative output can be taken out on the left and right. In addition, when the solar cell modules 1 are connected in series, the positive and negative power cables 9 and the connector 10 may be provided on the left and right of the terminal box 7.

A hole for inserting a lead wire 6 for taking out the output from the solar cell panel 2 is as follows:
Any position between the rising portion 32 and the tip from above the metal plate of the extending portion 33 may be used.

The length of the power cable 9 and the connector 10 are determined so that one connector 10 is always located on the extending portion 33 as shown in the figure.
Therefore, the other power cable 9 and the connector 10 are long enough to connect to the connector 10 of the adjacent solar cell module 1. Further, when the adjacent left and right solar cell modules 1 and 1 are connected using the connector 10, the length may be adjusted so that the position of the connector 10 does not touch the drain board.

With this configuration, the connector 10
Will not come to the abutment. Further, in this embodiment, the length of the power cable 9 is changed on the left and right, but even if the power cable 9 of the same length is used, the connector 10 at either end is inserted into the extension portion 33. The length of the power cable 9 may be the same on the left and right as long as it can be located

Next, an example of installation of the above-described solar cell module 1 with a roof material on a roof will be described with reference to FIGS. FIG. 4 is a perspective view showing an installation state of the roof material-integrated solar cell module 1 of the present invention, and FIG.
Is a schematic cross-sectional view of a roof material-integrated solar cell module portion installed adjacently in the left-right direction, and FIG. 6 is a plan view showing an installation state of the roof material-integrated solar cell module.
The present invention is not limited to the following installation modes.

First, a screw screw 20 is passed through a screw hole provided in the extension portion 33 of the back metal plate 3, and the screw screw 20 is screwed into the base plate 25, whereby the roof material-integrated solar cell module 1 at the lower portion is formed. Is fixed. In this case, when other roofing-integrated solar cell modules 1 are arranged in the horizontal direction, the draining plate 21 is placed below the back metal plate 3 as shown in FIG. After placing in
The roof material-integrated solar cell module 1 and the draining board 21 are fixed on the field board 25 with the screw 20. At this time, the adjacent connectors 10 and 10 are connected. Connectors 10, 10 between adjacent solar cell modules 1, 1
Are always located on one of the extending portions, as shown in FIG. 6, so that the butting portions of the solar cell modules 1 and 1 arranged above the solar cell module 1 It will be the position you avoided.

The draining plate 21 is formed of a sheet metal member, and the falling portion 2 is formed by bending the eaves-side end downward.
1a, a rising portion 21b formed by bending the ridge side end upward, and a side rising portion 21c formed by bending the left and right ends inward and upward. 1. Water leakage from the gap between the 1 is received and draining is performed reliably.

Next, after the power cable 9 and the connector 10 pulled out from the terminal box 7 are laid at predetermined positions, the other roof material-integrated solar cell module 1 located on the upper side (ridge side) stands. The descending portion 31 is engaged with the rising portion 32 of the solar cell panel 1 located below, and after joining the two, the screw 20 is passed through a screw hole provided in the extending portion 33 of the back metal plate 3. The roof material-integrated solar cell module 1 is fixed by screwing the screw 20 into the base plate 25.

The solar cell panels 1... Can be arranged in a zigzag manner on the base plate 20 by sequentially performing this operation.

The solar cell panel 1 thus arranged
In, the water leakage is prevented by the drain plate 21 between the solar cell panels 1 and 1 adjacent in the lateral direction. In addition, between the eaves side and the ridge side, drainage can be performed by the rising portion 32 and the falling portion 31, and further, the drainage can be more reliably performed by the folded portion 34 at the end of the extending portion 33, thereby preventing water leakage. it can. Also, even in the event that water soaks from between the surface substrate 2 and the rising portion 32 and water seeps out from the hole 35 to the extension portion 33, the metal plate of the extension portion 33 is provided under the hole 35. It is present and folded back portion 34
This prevents water from leaking to the base plate 20.

Further, as described above, since the connector 10 is located inside from the end in the beam direction of the solar cell module 1, the connection between the solar cell modules 1 and 1 is located on the upper side. This can be performed at a position other than the abutting portion.

Further, by disposing the terminal box 7 from the center and the end of the solar cell module 1 in the girder direction, when the solar cell modules 1... The box 7 and the connector 10 are not obstructed, and the deformation of the drain plate or the like can be prevented.

Next, another example of the engaging portion between the solar cell modules 1 and 1 according to the present invention will be described with reference to FIG. When the falling portion of the upper solar cell module and the engaging portion of the lower solar cell module are defective in shape of the back metal plate, for example, when deformation occurs during construction, insufficient engagement may occur. If the engagement portion is insufficiently engaged, the water leakage prevention performance may be reduced. Therefore, in the example shown in FIG. 7, the elastic member 11 made of, for example, rubber or a foamed plastic material is interposed between the falling portion 31 and the rising portion 32, so that they are engaged with each other.

The elastic member 11 includes, for example, the falling portion 3
What is necessary is just to attach to the back surface of the 2nd folded part 32a via an adhesive sheet etc. Of course, the elastic member 11 may be mounted on the solar cell panel 2 at a position where the falling portion 32 contacts.

As described above, when the falling portion 31 and the rising portion 32 are engaged with each other with the elastic member 11 interposed therebetween, the elastic member 11 is deformed by its own weight of the solar cell module 1, and the elastic member 11 is in contact with the back metal plate 3. The adhesion is improved. As a result, water leakage due to rain or the like from the engagement portion provided on the back metal plate 3 can be reduced. In addition, the elastic member 11 serves as a cushioning material against impacts caused by hailstones and stepping stones, so that the impacts on the solar cell panel 2 can be reduced, and the impact resistance can be improved.

A decorative cover 23 may be attached to the abutting surface between the solar cell modules 1 and 1 for aesthetic reasons. In order to attach the decorative cover 23, it is necessary to attach the insertion piece 22 for inserting the decorative cover 23 to the end of the solar cell module 1.

In the embodiment shown in FIG. 8, the insertion piece 22 is provided on the lateral side of the solar cell module 1, and the EVA resin 4 is provided between the insertion piece 22 and the back metal plate 3. In the step of integrating the metal plate 3 and the solar cell panel 2, the insertion piece 22 is integrated with the solar cell panel 2 and the back metal plate 3.

In this way, the insertion piece 22 is integrally attached to the side end of the solar cell module 1, and after installation, the decorative cover 23 is attached to the insertion piece 22.

In the above example, the solar cell panel 2
The space below the eaves and the space above the eaves are filled with EVA resin 4 between the back metal plate 3 and the ends in both lateral directions are filled with EVA resin 4 between the insertion pieces. As a result, the four sides of the solar cell panel 2 are covered with the EVA resin 4, and the moisture resistance can be improved.

[0051]

As described above, the present invention is applicable to the case where the solar cell module is installed in a zigzag manner by disposing the terminal box from the center and the end in the beam direction of the roofing-integrated solar cell module. If the terminal box or connector is in the way, such as when installing a drainer,
Workability is improved, and breakage and the like can be prevented.

[Brief description of the drawings]

FIG. 1 is a plan view of a roof material-integrated solar cell module according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a front view of the roofing material integrated solar cell module according to the embodiment of the present invention.

FIG. 4 is a perspective view showing an installed state of a roofing material integrated solar cell module of the present invention.

FIG. 5 is a schematic cross-sectional view showing an installation state of a roof material-integrated solar cell module of the present invention.

FIG. 6 is a plan view showing an installed state of a roofing material integrated solar cell module of the present invention.

FIG. 7 is a schematic cross-sectional view of an engagement portion of a roofing-integrated solar cell module showing another embodiment of the present invention.

FIG. 8 is a schematic cross-sectional view for explaining an installation state of a roofing-integrated solar cell module according to another embodiment of the present invention.

FIG. 9 is a schematic cross-sectional view showing an installation state of a conventional roof material-integrated solar cell module.

FIG. 10 is a plan view showing a conventional roof material-integrated solar cell module.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 roof material integrated solar cell module 2 solar cell panel 3 back metal plate 4 EVA resin 7 terminal box 9 power cable 10 connector 33 extension

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Saburo Nakajima 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Masafumi Morimi 2-chome, Keihanhondori, Moriguchi-shi, Osaka No. 5 Sanyo Electric Co., Ltd. (72) Inventor Katsutoshi Takeda 2-5-5 Keihanhondori, Moriguchi-shi, Osaka F-term in Sanyo Electric Co., Ltd. 2E108 AZ01 BB01 BN02 CV00 DD01 GG16 KK04 LL03 MM04 NN07 5F051 BA03 BA05 GA02 JA04 JA08 JA09

Claims (2)

[Claims] 1. A solar cell panel provided with a plurality of photoelectric conversion elements inside on a back metal member, wherein the back metal member has a falling portion having an eaves-side end extending downward, and a ridge-side end. And a rising portion extending upward is provided, wherein the falling portion of another roofing integrated solar cell module disposed adjacent to the rising portion above is engaged with the roofing integrated solar cell module, The back metal member is provided with an extending portion extending from the rising portion to the ridge side, and the terminal box is disposed on the extending material portion at a position shifted from the center and the end in the girder direction. Roof material-integrated solar cell module. 2. The terminal box is provided with a power cable having a connector connected to another roofing-integrated solar cell module, and the connector located on at least one side is connected to the roofing-unit-integrated solar cell module girder. The roofing-integrated solar cell module according to claim 1, wherein the solar cell module is located inside an end in the direction.