JP2002021277A - Solar cell module and solar energy power generating function attached roof making use thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a building material integration solar cell module and an energy generating function attached roof making use thereof capable of installing a verge substrate throating return section on a roof body without being crushed and maintaining a waterproofing function for the verge substrate throating to prevent the trouble of the solar cell module by leakage of water to the indoor side and staying humidity. SOLUTION: For the building material integration solar cell module including a solar cell 2 consisting of roofing and a supporting base 3 fixed to the roof body by supporting the solar cell, a plurality of shoe materials 5, 5, etc., are arranged to the bottom facing the rood body of the supporting base 3, and when the shoe materials 5 cover the solar cell module 1 on the upper side of the verge substrate throating of the roof body, the thickness of the bottom of the supporting base 3 floated with the shoe materials 5 is so set that the verge substrate throating return section can not be crushed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solar cell module suitable for a solar power generation system and a roof having a power generation function using the same.

[0002]

2. Description of the Related Art In recent years, a photovoltaic power generation system has been widely used, in which a roof having a power generation function is constituted by a plurality of solar cell modules arranged and arranged on a roof of a house or the like, and a predetermined number of solar cell modules are mounted on the back surface. A large number of one series connected in series with each other via the side output unit and connected to a lead-in cable extending indoors with each of the solar cell modules located at the beginning and end of the series connection, A system is generally connected to a commercial power system through an indoor inverter and supplied to indoor electric wiring.

[0003]

The solar cell module is laid in consideration of the rain. However, under the strong wind and rain conditions, rainwater may enter the back side of the module. A base sheet having a waterproof layer such as asphalt roofing is provided on the upper side, and each solar cell module is laid thereon.

As shown in FIG. 9, antiseptic adjusting material 11 and base sheet 1 are provided on both side edges (kerava) of the roof body.
A keraba ground drainer 12 extending from the ridge side to the eaves side is provided along the outer surface of the roof body 10 to the center side of the roof main body 10, and its extended end has a turned-up portion 1 whose edge is folded upward.
2a is formed. Rainwater that has entered through a gap between the antiseptic adjusting material 11 and a solar cell module (not shown) installed adjacent thereto is prevented from flowing toward the center of the roof at the return portion 12a. Water is smoothly drained toward the eaves side through the formed water passage 12b.

[0005] By the way, a roof 10 with a power generation function is formed by using a solar cell module 101 of a building material integrated type provided with a support base.
0, the solar cell module covered on the upper side of the keraba base drainer 12 at both ends of the roof body 10 is, as shown in FIG.
02a crushes the return portion 12a of the kerava groundwater drainer 12, thereby causing a problem that rainwater leaks from the crushed portion of the return portion 12a to the roof center side.

Rainwater leaking toward the center of the roof flows from the ridge side to the eaves side through the gap between the heat insulating support members provided on the back side of each solar cell module, but the heat insulation is perpendicular to the inclination direction of the roof. The rainwater easily accumulates on the side wall of the support and the contact surface with the base sheet, and the long-term accumulation of the rainwater causes a problem of water leaking indoors at the location, or the accumulated moisture may cause the solar cell module to lose its moisture. There was also a possibility of causing a failure.

The present invention has been made in view of the present situation, and can be installed on a roof main body without crushing a turn-back portion of a keraba groundwater drainage, while maintaining the waterproof function of the keraba groundwater drainage and allowing water to leak or stay indoors. It is an object of the present invention to provide a solar cell module integrated with a building material capable of avoiding the failure of the solar cell module due to moisture and a roof having a power generation function using the same.

[0008]

Means for Solving the Problems The inventor of the present invention has made intensive studies to solve the above-mentioned problems, and as a result, by providing a clogging material for floating the support table, the drainage of the keraba ground drainage without crushing the return portion. The present inventors have found that rainwater can be smoothly discharged to the eaves side through a water channel, and have completed the present invention.

That is, the present invention relates to a building material-integrated solar cell module including a solar cell constituting a roofing material and a support for supporting the solar cell and fixing the solar cell to the roof main body. A plurality of clogs are arranged on the bottom facing the clogging, and each clogging is, when the solar cell module is laid on the upper side of the keraba under drainage of the roof main body, the bottom of the support base floated by these clogging is said. Provided is a solar cell module characterized in that the thickness is set so as not to crush the turning part of the keraba base drainer.

[0010] In such a solar cell module, even if the solar cell module is covered above the keraba groundwater drain, the rainwater can be passed through the water passage of the kerava groundwater drain without crushing the return portion for stopping rainwater. Is discharged smoothly.

[0011] The thickness of the clogging material is preferably 4 to 5 in consideration of the height of the turn-back portion in a general drainage of keraba ground.
mm.

When the clogging material is provided at a position covering the opening of the screw hole formed in the bottom of the support base, when the clogging material fixes the support base to the roof main body with mounting screws or nails, It functions as a waterproof sealing material that adheres tightly to the bottom of the support, the screw holes, and the base sheet of the roof main body, and can omit the caulking process of the fixed portion that has been conventionally required at the time of construction.

[0013] In the case where the clogs are provided with thick portions via steps and the opening portions of the screw holes are located in the thick portions, when the support base is fixed to the roof main body, these thick portions are formed. By press-fitting to the roof main body and increasing the surface pressure at the site, the waterproof sealing property is further improved.

The clogs are preferably made of EPDM (ethylene propylene diene copolymer) or chloroprene, and preferably have a JISA hardness of 50 to 70.

[0015] Further, it is preferable that these clogs are molded extruded products.

The solar cell module is a building material integrated type solar cell module which is sequentially arranged and installed on the roof main body by fitting the end of the solar cell to another supporting base already fixed on the roof main body, wherein the bottom surface of the clogging material is provided. In the case where the front end portion in the fitting direction is smooth, each clogging material slides smoothly on the base sheet without coming off the support table, and the ridge side end of the solar cell module has the other support. It fits smoothly into the table, preventing a decrease in construction efficiency.

In particular, it is preferable that a single-sided pressure-sensitive adhesive tape whose surface is waxed is attached to the tip portion of the clogging material, and the remaining portion is attached to a support base.

In a roof having a power generation function in which the solar cell modules as described above are arranged and arranged on a roof body,
The waterproofing function of the keraba ground drainer is maintained, the failure of the solar cell module due to water leaking indoors or retained moisture is avoided beforehand, and long-term power generation capability and reliability are maintained.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 to 8 show a typical embodiment of the present invention, wherein reference numeral 1 denotes a solar cell module, 2
Denotes a solar cell, and 3 denotes a support.

As shown in FIG. 1, a solar cell module 1 according to the present invention comprises a solar cell 2 constituting a roof material, and a support 3 for supporting the solar cell and fixing it to a roof body 10. A plurality of clogs 5 on the bottom 3a of the support 3 facing the roof body 10;
Are arranged. In the present invention, by providing the clogging material 5 that floats the support base 3 from the roof main body 10 as described above, as shown in FIG. In addition, the rainwater is smoothly drained through the water passage 12b of the kerava groundwater drainer 12 without crushing the return portion 12a for stopping the rainwater.

As shown in FIG. 2, the solar cell module 1 covers a metal plate 7 such as a galvanium steel plate over substantially the entire surface of the back surface of the solar cell 2 except for a portion where the terminal box 42 is installed. 2 with different polarities
Terminal box 4 from which the output cables 41, 41 are extended
The output unit 4 is configured by providing the photovoltaic cell 2 substantially at the center on the back side of the solar cell 2. On the back surface of the metal plate plate 7, a horizontally long heat insulating support member 6 integrally molded over both sides sandwiching the terminal box 42 is fixed by an adhesive. A support 3 having a plurality of clogs 5,... Disposed on the bottom 3a is provided at the eave-side end on the back surface side of the metal plate 7 and directly on the roof body 10 independently. A building material-integrated solar cell module is configured as a roofable roof material. In addition, the heat insulating support member 6 is not limited to the one integrally molded in this way, and the terminal box 4
A plurality of separately formed heat-insulating supports, such as a pair of heat-insulating supports independently formed on both sides with the two interposed therebetween, can be used as appropriate.

As the solar cell 5, a wide variety of photoelectric conversion elements such as a single-crystal silicon solar cell, a polycrystalline silicon solar cell, an amorphous silicon solar cell, a compound semiconductor solar cell, and an organic semiconductor solar cell can be used. Any suitable shape can be adopted according to the shape of the roof main body or the overall design, such as a square or polygon, but in this example, the back side of a 450 mm x 900 mm horizontally long rectangular glass substrate positioned on the surface is oxidized. After forming a transparent electrode layer such as tin, an optical semiconductor layer, and a back electrode layer such as a metal in order, and patterning each of these layers by laser processing or the like, after forming a solar cell element in which a power generation unit and a wiring unit are formed. The element formation surface side is sealed and protected with a filler such as EVA (ethylene-vinyl acetate copolymer) or a Tedlar film to form a thin-film solar cell. To have. The optical semiconductor layer includes amorphous silicon a-Si and hydrogenated amorphous silicon a.
-Si: H, hydrogenated amorphous silicon carbide a-Si
C: In addition to H, amorphous silicon nitride, etc., an amorphous or microcrystal of an amorphous silicon-based semiconductor made of an alloy of silicon and another element such as carbon, germanium, tin, etc. Type, ni type, pn type, MIS
A semiconductor layer synthesized into a type, a heterojunction type, a homojunction type, a Schottky barrier type, or a combination thereof is used.

The terminal box 42 constituting the output unit 4 is
Inside a housing 43 for receiving an output extraction electrode material (not shown) protruding from the back surface side of the solar cell 2, two relay terminals for relaying between the electrode material and the output cables 41, 41 are provided. A bypass diode is connected between the relay terminals to prevent a reverse current from flowing into the module when a part of the solar cell 2 is shaded or at night. Forming a circuit. The output cables 41, 41 have a waterproof coating layer made of a synthetic resin on the outer cover part, and each of the output cables 41, 41 extends outside from the eave side wall part of the housing 43 fixed to the back side of the solar cell 2. Waterproof connectors 41a and 41b having plugs or sockets and having the same waterproof coating layer are provided at the tips.

The heat insulating support member 6 has a concave notch 63 at a position where the terminal box 42 is provided.
2 and a plurality of flat columnar legs 6 independent from each other and standing upright from the plate-shaped main body 60 on the roof main body side.
Are made of an elastic body integrally molded from a foamed synthetic resin or the like, and the indoor heat insulating effect and the amorphous silicon solar cell are provided by a plate-shaped main body 60 which is fixed to the rear surface of the solar cell 2 in a planar manner. The annealing effect when a battery is employed is sufficiently exhibited, and the plate-shaped main body 60 and the plurality of legs 61,... Also, the buffer effect as a spacer is sufficiently exhibited.

The leg 61 located at an appropriate position among the plurality of legs 61,... Is opened at the contact surface 6b with the roof main body, and the depth is larger than the cable diameter. A cable holding groove 61 a for holding the connected cable 41 (8) in a stored state without protruding from the opening is provided in communication with a side of the leg 61.

The heat insulating support material 6, preferably styrene,
Propylene, ethylene, a homopolymer such as urethane or a copolymer containing them as a main component, or integrally molded with a foamed synthetic resin comprising a mixture of the homopolymer or the copolymer, among which styrene, propylene, ethylene Homopolymers or foamed synthetic resins of copolymers containing them as the main component are more preferable, styrene, propylene,
Ethylene homopolymers are more preferred. Further, the heat insulating support member 6 is fixed on the rear surface side of the solar cell 2 with such strength that the heat insulating support member 6 can be easily detached by manpower, and since the heat insulating support member 6 is easily detached during maintenance, the solar cell module can be easily removed from the roof body. It is configured to be able to. For example, if a heat-insulating support having a bonding area of 0.3 m ² is fixed to the back surface of the solar cell, it should be joined using an adhesive so that it can be easily separated from the back surface of the solar cell with a peeling force of about 5 kg. Is preferred.

The support base 3 is made of aluminum. As shown in FIG. 3, an inward flange 32 abutting along the eave-side end of the back surface of the metal plate 7 is provided on the upper part of the support base 3 as shown in FIG. For mounting screws 72 formed in a bent portion 71 which is formed so as to protrude in the width direction, that is, in the longitudinal direction, and which is formed by bending the eave-side edge of the metal plate plate 7 downward. Corresponding to the through holes (not shown). In the middle of the upper stage, the ridge-side end of the solar cell module 1 which opens outward in the longitudinal direction and is arranged adjacent to the eaves side is fixed to the metal plate plate 7.
A mounting groove 34 that receives and engages with the gasket 34a for waterproofing is formed. In the bottom 3a of the support 3, an outward flange 33 having a plurality of screw holes 33a for fixing the support 3 to the roof main body 10 with mounting screws, nails, or the like is formed in the longitudinal direction. 4 is formed along the outwardly facing flange 33 in FIG.
As shown in (a) to (c), a plurality of clogs 5 according to the present invention are provided.

The clogs 5 are used to cover the solar cell module 1 above the drainage 12 of the base of the keraba at the edge of the roof main body.
Any shape and material can be used as long as the material has a function as a spacer whose thickness is set so as not to crush the turning portion 12a of the keraba base drainer, but is preferably made of a rubber material. Preferably, it is formed using EPDM or chloroprene which provides excellent durability (heat resistance, weather resistance, etc.), and has a JISA hardness of preferably 50 to 70.

Since the clogging material 5 is provided at a position covering the opening of the screw hole 33a formed in the outward flange, the clogging material 5 does not need to be prepared. When the outward flange 33 is fixed to the roof main body with mounting screws or nails, it functions as a waterproof sealing material that adheres tightly to the bottom 3a of the support base, the screw hole 33a, and the base sheet of the roof main body. The necessary caulking process for the fixed portion can be omitted.

The clogging material 5 is previously placed on the bottom 3 of the support 3.
a may be fixed with an adhesive or the like, or may be sandwiched between the bottom 3a and the roof main body 10 when the support base 3 is installed on the roof main body 10. As shown in FIGS. 4A to 4C, a holding portion 51 that fits and holds a projecting end edge of the outward flange 33 in a U-shape, and a base end of the outward flange 33. Projecting portion 52 projecting upward from the side and locked to the inner wall of the support base 3
And a shaped extruded product cut to a width of about 30 mm. The holding portion 51 and the protruding portion 52 are used to hold the bottom 3a of the support base back and forth, so that the support base 3 can be easily touched. Before the solar cell module is installed on the roof,
Is held in close contact.

In the clogging material 5, a thick portion 5 is provided via a step 53 at a position where the opening of the screw hole 33 a is located.
When the support base 3 is fixed to the roof main body 10, the thick portions 54 are pressed against the roof main body to increase the surface pressure of the corresponding portions, thereby improving the waterproof sealing property. Has been improved. As shown in FIGS. 2 and 3, a single-sided adhesive tape 36 whose surface is waxed is attached to a portion extending from the step 53 to the projecting portion 52 on the opposite side, and the remaining portion is attached to the inner wall of the support base. By that
The clogging material 5 is stably held on the support base 3.

The thickness of the clogging material 5 is determined so as not to crush the return portion 12a in consideration of the height of the return portion 12a of the general drainage for fluffy base 12, that is, whether or not the return portion 12a is pressed or pressed. Even so, it is set so that the water stopping effect by the return portion 12a can be maintained, and preferably 4 to
It is set to 5 mm.

FIG. 5 shows a roof R with a power generation function in which a plurality of these solar cell modules 1 are arranged along the outer surface of the base sheet 18 on the surface of the roof main body 10. Each solar cell module 1 is shown in FIG. As described above, the ridge side end is supported by the mounting groove 34 of the support table already fixed to the ridge side, and the eave side end is supported by the own support table 3 fixed to the back side. It is sequentially fixed on the roof body 10.

When the ridge-side end of each solar cell module 1 is fitted into the mounting groove 34, its own support 3
Need to be slid on the base sheet 18 of the roof body,
An adhesive tape 36 is attached to each clog 5 directly in contact with the base sheet 18 in the fitting direction, so that even though the entire clog 5 is rubbery, each clog 5 is clogged.
Can smoothly slide on the base sheet 18 without coming off the support table 3. Accordingly, the ridge-side end of the solar cell module 1 is smoothly fitted into the mounting groove 34, thereby preventing a decrease in construction efficiency. In this way, the clogging material 5 is placed on the base sheet 18 to obtain the clogging material 5.
As a means of sliding, besides attaching the adhesive tape 36 whose surface has been waxed as described above to the clogging material 5,
It is also effective to attach paraffin paper or attach a lubricating material to the surface. Further, the lower surface of the outward flange 33 to which the clogging material 5 is attached or the lower surface of the clogging material 5 is attached to the flange. It is also a preferred embodiment to incline upward about 2 ° with respect to the upper surface of the roof main body toward the protruding end side or the holding portion 51 side of the clogs 5.

As described above, the wiring of the roof R with a power generation function in which the respective solar cell modules 1 are arranged and arranged on the roof main body 10 is performed by connecting the output cable 41 led out to the side of each solar cell module 1 to the side. The solar cell modules connected to each other are connected in series by connecting to an output cable 41 extending from the solar cell module 1 fixed adjacent to the solar cell module 1. The solar cell module 1 located at the start or end of the series connection is shown in FIG. And is connected to a lead-in cable 8 extending from indoors through an insertion groove 31 provided in the support base 6. This drop cable 8 is
It is introduced indoors through an insertion hole provided at the top of the roof body on the ridge side as before, but preferably a wiring sleeve 13 as shown in FIG. 7 is mounted in the insertion hole 14 and guided inside the sleeve. Introduced indoors.

The roof R with a power generation function configured as described above
, The output cable 4 of each solar cell module 1
1 is a cable holding groove 61 provided in the heat insulating support member 6 on the back side.
a, when the solar cell module 1 is fixed, the output cable 41 is pinched by the heat insulating support member 6, that is, the contact surface 6 b of the leg 61.
Inconveniences such as the output cable 41 being pinched in the solar cell module can be avoided beforehand, and an unexpected situation in which the output cable 41 enters the backside again after fixing the solar cell module can be avoided, and excellent workability can be achieved. Since it is maintained in a state of being floated from the base sheet 18 inside the cable holding groove 61a,
Bleed of the output cable 41 is prevented, and long-term power generation capability and reliability are maintained.

As shown in FIG. 8, each of the solar cell modules 1 installed on the both sides of the roof main body and above the keraba ground drainer 12 is provided with clogs 5 arranged on the bottom 3a of the support base. The preservative adjuster 11 and the solar cell module 1 are installed without crushing the return portion 12a.
Rainwater that has entered from the gap is smoothly drained toward the eaves side through the water passage 12b of the keraba groundwater drainage.
In addition, the solar cell module 1 installed above the keraba base drainer 12 has an end of the support base 3 so that the screw hole is not positioned in the water passage 12b of the keraba base drainer 12 due to rain. 90 to 100 mm from part 37
A screw hole 33a is formed at a distant position, and in this example, the clogging material 5 is provided in accordance with the position. However, the clogging material of the present invention is not limited to being provided at a position covering the opening of the screw hole. However, the clogging material provided in this manner can be appropriately provided at a position where the screw hole of the support base bottom portion 3a is not opened. May contact the inside of the water passage groove 12b.

[0038]

As described above, according to the solar cell module of the present invention and the roof having a power generation function using the same, even when the solar cell module is laid over the drainage of the keraba ground, the rainwater is removed. Without crushing the back part that stops water,
Rainwater can be smoothly drained through the water passage of the keraba groundwater drainer, and the failure of the solar cell module due to water leaking into the room or retained moisture is avoided beforehand, and long-term power generation capability and reliability are maintained.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a main part of a solar cell module according to a typical embodiment of the present invention.

FIG. 2 is a perspective view of the solar cell module viewed from the back side.

FIG. 3 is a cross-sectional view showing a state where a support base of the solar cell module is fixed.

FIG. 4A is a front view showing a clog material arranged on a support base. (B) is a top view similarly showing a clog material. (C)
FIG.

FIG. 5 is an explanatory view showing a roof with a power generation function using a solar cell module.

FIG. 6 is a perspective view of the solar cell module connected to the lead-in cable as viewed from the back side.

FIG. 7 is an explanatory view showing a wiring sleeve used for a roof with a power generation function.

FIG. 8 is an explanatory view showing a state in which the solar cell module is covered on the upper side of the drainage of the keraba.

FIG. 9 is an explanatory view showing how a keraba groundwater drainer drains rainwater to the eaves side.

FIG. 10 is an explanatory view showing a state in which a conventional solar cell module is covered on the upper side of the drainage of the keraba base.

[Explanation of symbols]

 R Roof with power generation function 1 Solar cell module 2 Solar cell 3 Support base 3a Bottom 4 Output section 5 Geta material 6 Insulation support material 6b Contact surface 7 Metal plate 8 Pull-in cable 10 Roof body 11 Antiseptic adjustment material 12 Return portion 12b Water passage groove 13 Wiring sleeve 14 Insertion hole 18 Base sheet 31 Insertion groove 32 Inward flange 33 Outward flange 33a Screw hole 34 Mounting groove 34a Gasket 35 Mounting screw 36 Adhesive tape 37 End 41 Output cable 41a, 41b waterproof Connector 42 Terminal box 43 Housing 51 Holder 52 Projecting part 53 Step 54 Thick part 60 Plate-shaped main body 61 Leg 63 Depressed notch 61a Cable holding groove 71 Folding part 72 Mounting screw 101 Solar cell module 102 Support base 102a bottom

Claims (10)

[Claims] 1. A building material-integrated solar cell module comprising a solar cell constituting a roof material and a support for supporting the solar cell and fixing the solar cell to a roof body, wherein the solar cell module faces the roof body of the support. When a plurality of clogs are disposed on the bottom and each clog is covered with the solar cell module above the keraba basin drain of the roof main body, the bottom of the support base floated by these clogs is used as the keraba basin drain. A solar cell module characterized in that its thickness is set so as not to crush the return part of the solar cell module. 2. The solar cell module according to claim 1, wherein the thickness of the clog material is set to 4 to 5 mm. 3. The solar cell module according to claim 1, wherein the clogging material is provided at a position covering the opening of the screw hole formed in the bottom of the support base. 4. A clog material is provided with a thick portion via a step,
4. The solar cell module according to claim 3, wherein an opening of a screw hole is located in the thick portion. 5. The solar cell module according to claim 1, wherein the clogs are made of EPDM or chloroprene. 6. The solar cell module according to claim 1, wherein the clogging material has a JISA hardness of 50 to 70. 7. The solar cell module according to claim 1, wherein the clogging material is a profile extruded product. 8. A building material-integrated solar cell module in which the end portions of the solar cell are fitted into another supporting base already fixed on the roof main body and are sequentially arranged and installed on the roof main body,
The solar cell module according to any one of claims 1 to 7, wherein a tip portion of the bottom surface of the clogging material in the fitting direction is a smooth surface. 9. The solar cell module according to claim 8, wherein a single-sided adhesive tape whose surface has been waxed is attached to a tip portion of the clogging material, and the remaining portion is attached to a support base. 10. A roof with a power generation function, wherein the solar cell modules according to claim 1 are arranged and arranged on a roof main body.