JP2002118278A - Photovoltaic power generation unit array, its manufacturing method, photovoltaic power generator, and installing member on roof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a photovoltaic power generation unit array having a water proofing property. SOLUTION: This photovoltaic power generation unit 11 array is provided with a plurality of photovoltaic power generation units 15 each having a plurality of light-transmissive substrates 21 carrying solar batteries on their rear surfaces. Each unit 15 is provided with waterproofing rear-surface covers 23 which respectively seal the solar batteries from the rear surface sides of the substrates 21. Each cover 23 has a larger size than the substrate 21 has and protruding sections 23a which are protruded from the periphery of the substrate 21. The protruding sections 23a of adjacent units 15 are joined to each other so that one waterproofing sheet 23A may be formed of the rear-surface covers 23 of the continuous units 15. The sheet 23a waterproofs the array 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photovoltaic power generation unit array used for photovoltaic power generation, a method of manufacturing the same, a photovoltaic power generation device provided with the array, a power generation device and a non-power generation roof material. And a roof device comprising:

[0002]

2. Description of the Related Art A solar cell module used for photovoltaic power generation is based on a structure in which a solar cell provided on a back surface of a light-transmitting substrate is sealed with a sealing material from the back surface side.
Generally, a solar cell module with a frame around which a frame is mounted is frequently used, but a frameless solar cell module is also provided.

[0003] In each case, the sealing material is formed to be substantially the same size as the substrate. Therefore, when the said solar cell module is laid on a field board as a roof material, the module itself cannot waterproof between adjacent solar cell modules. Therefore, when some waterproofing measures are taken between the adjacent solar cell modules, the workability on the roof is reduced. Also, if the waterproofing measures are not taken,
Since the waterproofing of the roof relies solely on the roofing on the baseboard, a faulty installation of the roofing will cause the roof to leak.

[0004]

An object of the present invention is to provide a solar power generation unit array having waterproofness, a method of manufacturing the same, a solar power generation apparatus having the array,
Another object of the present invention is to obtain a roof device including the power generation device.

[0005]

According to a first aspect of the present invention, there is provided a photovoltaic power generation unit array comprising at least one light-transmitting substrate provided with a solar cell on a rear surface thereof. A plurality of photovoltaic units sealed with a waterproof back cover are provided, and the back cover of each of these photovoltaic units is formed in such a size that the peripheral portion protrudes from the substrate, and each back cover is The protruding portions are connected to each other to form one sheet.

In the present invention and each of the following inventions, a solar cell of a solar power generation unit includes a photovoltaic element (cell) for performing photoelectric conversion of a single crystal type, a polycrystalline type, a microcrystalline type, and an amorphous type. It is possible to use a material made of a quality (amorphous) system, a material made of a compound semiconductor, or a material made of an organic semiconductor. Further, a hybrid type or a tandem type may be used. Can be. In the present invention and each of the following inventions, the light-transmitting substrate can be made of glass or plastic, and the back cover can seal a solar cell and has any waterproofness. Any of these can be used, and it is desirable to have a multilayer structure in order to obtain these functions and functions added as necessary. The invention also includes that the light-transmitting substrates arranged on the sheet are in a plurality of rows.

The photovoltaic power generation unit array according to the first aspect of the present invention is formed by connecting a plurality of photovoltaic power generation units, and the connection is formed larger than the light-transmitting substrate and provided in each of the units. This is realized by connecting the protruding portions of the waterproof back cover to each other and forming these covers as one sheet. Therefore, between the substrates can be waterproofed by the sheet portion located between the adjacent substrates.

[0010] In a photovoltaic power generation unit array according to a second aspect of the present invention, the substrates are arranged in a row on the sheet according to the first aspect of the present invention, and both side edges of the sheet are arranged in a line. Protruding side edges protruding from the respective substrates are formed in a direction orthogonal to the direction in which the rows extend, and the protruding side edges are used as fixing portions to the portion to be laid.

In the present invention, since the protruding side edges on both sides of the sheet are used as fixing portions to the portion where the photovoltaic power generation unit array is to be laid, the distance between these side edges is set as follows.
It can be as short as the length of the substrate in a direction perpendicular to the direction in which the rows extend. Therefore, the solar power generation unit array can be fixed to the laid portion so as to be hard to move due to wind or the like. Moreover, since it is not necessary to fix the sheet portion located between the adjacent substrates to the laid portion by another fixing means, the sheet portion does not have a hole, and the waterproofness of the sheet may be impaired. Absent.

A solar power generation unit array according to a third aspect of the invention is characterized in that the sheet according to the first or second aspect has weather resistance and moisture proofness. In the present invention, the weather resistance and moisture resistance of the sheet are
It may be obtained by two layers of a weather-resistant layer and a moisture-proof layer, or may be obtained by a single layer. In the former case, it is preferable to provide a weather-resistant layer for providing weather resistance so as to be exposed to the weather on the substrate side of the moisture-proof layer.

According to the present invention, the durability of the sheet exposed to high temperature, rainfall, sunlight and the like from the light receiving surface side of the photovoltaic power generation unit array can be ensured by the weather resistance, and the sheet acts from the back side of the array. It is possible to ensure that the moisture has an adverse effect on the solar cell by the moisture-proof property of the sheet.

A solar power generation unit array according to a fourth aspect of the invention is characterized in that the sheet according to any one of the first to third aspects has a conductor layer.
In the present invention, the conductor layer may be provided on the surface exposed to the outside or inside the sheet as long as it is within the thickness range of the sheet.
However, when the conductor layer is a metal, it is preferable to provide it inside the sheet in order to prevent rust of the conductor layer.

According to the present invention, the ground of the photovoltaic power generation unit array can be easily taken.

According to a fifth aspect of the present invention, there is provided a photovoltaic power generation unit array, wherein the sheet according to any one of the first to fourth aspects has a reinforcing layer. In the present invention, if the reinforcing layer is in the thickness range of the sheet,
It may be provided on the surface exposed to the outside or inside. However, when the reinforcing layer is made of metal, it is preferable to provide it inside the sheet in order to prevent rust of the reinforcing layer.

[0015] The photovoltaic power generation unit array is laid with the protruding side edge of the sheet fixed to the laid portion. In the invention of claim 5, the strength required for the fixing is applied to the sheet by the reinforcing layer. Can be given.

A solar power generation unit array according to a sixth aspect of the present invention is characterized in that the sheet according to any one of the first to fifth aspects has a non-combustible layer. In the present invention, if the non-combustible layer is in the thickness range of the sheet,
It may be provided on the surface exposed to the outside or inside. However, when the non-combustible layer is a metal, it is preferable to provide it inside the sheet from the viewpoint of rust prevention of the non-combustible layer.

In the present invention, the non-combustible layer over the entire sheet can provide the solar power generation unit array with fire resistance.

A solar power generation unit array according to a seventh aspect of the present invention is characterized in that the back cover according to any one of the first to sixth aspects has a thermoplastic resin layer. . In the present invention, the thermoplastic resin layer may be provided on the surface exposed to the outside or inside the thermoplastic resin layer as long as the thickness is within the thickness range of the back cover. When the thermoplastic resin layer is provided on the surface exposed to the outside, the size of the resin layer is preferably equal to or larger than the other layers of the back cover,
When the thermoplastic resin layer is provided inside the inside, it is preferable that the size of the resin layer in the direction in which the photovoltaic power generation units continue is larger than the other layers of the back cover.

In the present invention, when the back covers of adjacent photovoltaic power generation units are connected to each other, the sheets can be easily formed by thermally fusing the thermoplastic resin layers to each other.

According to an eighth aspect of the present invention, there is provided a photovoltaic unit array according to the sixth or seventh aspect, wherein the conductive layer, the reinforcing layer,
And the non-combustible layer is shared by the same layer and is made of a metal material.

In the present invention, since the conductor layer, the reinforcing layer, and the non-combustible layer are also used as a single layer made of a metal material, the number of sheets can be reduced, and the cost can be reduced.

According to a ninth aspect of the present invention, in the method for manufacturing a photovoltaic power generation unit array, one or more light-transmitting substrates provided with solar cells on the back surface are formed larger than the one or more substrates from the back surface side. The plurality of photovoltaic power generation units sealed with the waterproof back cover are overlapped with the protruding portions of the back cover protruding from the periphery of the substrate, and the overlapping portions are joined to join each solar power unit. The back cover of the power generation unit is characterized by being continuous with each other so as to form one sheet.

The definition of a joint in the present invention indicates that the joints are fixed to each other, not merely overlapping and touching each other. Further, according to the present invention, as in the invention according to claim 10, the joining is performed by bonding using an adhesive, heat fusion,
This includes performing by a kind of joining method selected from solvent welding.

In the ninth and tenth aspects of the present invention, the protruding portions of the back covers of a plurality of adjacent photovoltaic power generation units are overlapped and joined to form a single sheet of the back cover of each unit. And so on,
A solar power unit array can be made. Thereby, since the back cover becomes a single sheet, the portions between the substrates can be waterproofed by the sheet portion located between the adjacent substrates.

[0025] According to a method for manufacturing a photovoltaic power generation unit array of the invention according to claim 11, the bonding according to claim 9 or 10 is performed by:
The method is characterized in that a tape-shaped sealing material is interposed between the overlapping portions to be overlapped. Similarly, claim 1
In the method for manufacturing a photovoltaic power generation unit array according to the second aspect, in the joining according to any one of claims 9 to 11, a sealing material is applied so as to cover an upper joining edge of the protruding portion. It is characterized by.

According to the eleventh and twelfth aspects of the present invention, the tape-shaped sealing material interposed between the protruding portions to be joined, or the sealing material attached to the upper joining edge of the joined protruding portions, It is possible to ensure the sealing performance of the joint.

According to a thirteenth aspect of the present invention, there is provided a photovoltaic power generation device, comprising: the photovoltaic power generation unit array according to any one of the first to eighth aspects;
And is formed with a sandwiching portion on the opening side, is fixed to the laid portion along the side edge of the photovoltaic power generation unit array, and protrudes from the sheet protruding on the side edge. A plurality of crosspieces each including a beam main body whose edge portion is accommodated so as to cover the clip portion, and a beam cover that clamps the protruding side edge portion with the clip portion, closes the opening, and is attached to the beam body. And a laying bar. This invention includes that the rail cover has a clip portion which is hooked on the clip portion, and the protruding side edge is clamped by these clip portions as in the invention according to claim 14.

In these inventions and each of the following inventions,
The beam main body and the beam cover forming the laying beam can be made of a weather-resistant material, for example, a metal, a synthetic resin, and the like. Particularly, a light metal, for example, made of an aluminum alloy can reduce the weight of the solar power generation device. preferable. In these inventions and each of the following inventions, when the solar power generation device is laid on the sloped roof, the laying bar may be installed so as to extend in the inclination direction of the sloped roof (vertical direction or eaves building direction). Alternatively, it can be installed so as to extend in the direction in which the girder of the sloped roof extends (lateral direction).

According to the thirteenth and fourteenth aspects of the present invention, the protruding side edge of the sheet of the photovoltaic power generation unit array according to any one of the first to eighth aspects is fixed to the part to be laid and is adjacent to the part to be laid. After being put in the crosspiece main body, by attaching a crosspiece cover for closing the opening to the crosspiece main body and assembling the laying crossbar, the side edge portion is sandwiched between the crosspiece of the crosspiece main body and the crosspiece cover, The photovoltaic power generation unit array can be laid on the laid portion. Since the photovoltaic power generation device laid in this manner includes the photovoltaic power generation unit array according to any one of claims 1 to 8, between the substrates adjacent to each other in the array as described above. The waterproofing between the substrates can be achieved by the sheet portion located at the bottom. Further, since the protruding side edge portion of the array is sandwiched inside the laying bar for fixing the array, waterproofing can be performed even at the sandwiched portion.

According to a fifteenth aspect of the present invention, there is provided a photovoltaic power generator, wherein a convex portion forming a groove is provided on an inner bottom portion of the crosspiece body according to the thirteenth or fourteenth aspect, and the convex portion penetrates the convex portion from above. The crosspiece body is fixed to the laid portion by a fixing component inserted into the laid portion. In the present invention, the convex portion can be provided at the center in the width direction of the inner bottom portion of the beam main body so as to form grooves on both sides thereof,
Further, the groove may be formed on one side in the width direction inside the beam main body, and may be provided on the inner bottom portion of the beam main body close to one side wall.

According to the present invention, the groove can be used as a water supply when rainwater infiltrates into the laying pier. Since the fixed component is passed through the convex portion at a position higher than the groove, the rainwater passing through the groove can be used. The fixed parts can be prevented from being exposed.

A solar power generation apparatus according to a sixteenth aspect of the present invention is characterized in that a waterproof sheet is laid between the crosspiece main body and the laid part according to the fifteenth aspect. When the power generator is laid on a roof, a part of the roofing can be used as a waterproof sheet.

According to the present invention, even if rainwater flows down along the fixed part that fixes the beam body to the laid portion, the waterproof sheet can prevent the water from entering the laid portion.

According to a seventeenth aspect of the present invention, there is provided a photovoltaic power generation device, wherein the side edges of the plurality of substrates provided in the photovoltaic power generation unit array are provided on the beam cover according to any one of the thirteenth to sixteenth aspects. It is characterized in that a substrate cover portion for stopping movement from above is provided. In the present invention, the substrate cover portion may be provided in contact with the upper surface of the side edge of the substrate, or may be close to the upper surface of the side edge of the substrate.

In the present invention, since each substrate is supported via the base cover, the solar power generation unit array can be prevented from swinging upward due to wind pressure, earthquake, or the like.

[0036] A photovoltaic power generator according to an eighteenth aspect of the present invention is characterized in that a cushioning material is provided between the substrate cover part according to the seventeenth aspect and the upper surface of the side edge of the substrate.
In the present invention, a material softer than the substrate and the substrate cover portion can be used for the cushioning material. In particular, a soft material having a sealing property is preferably used. In the present invention, the cushioning material can be fixed to the upper surface of the edge of the substrate or the substrate cover.

In the present invention, the hard substrate and the substrate cover can be prevented from hitting each other and being damaged by the cushioning material. When the cushioning material is sandwiched between the substrate and the substrate cover portion, the upward movement of the photovoltaic power generation unit array can be further suppressed. Further, when the sealing cushioning material is sandwiched between the substrate and the substrate cover, in addition to the above-described suppression of the oscillation, the waterproofing can be performed between the substrate and the substrate cover, so that rainwater is laid along the protruding side edge. The risk of intrusion into the pier can be reduced.

According to a nineteenth aspect of the present invention, a pedestal portion for supporting a side edge of the substrate from a back surface is provided on the crosspiece body according to any one of the thirteenth to eighteenth aspects. It is characterized by that.

According to the present invention, both sides of each substrate of the photovoltaic power generation unit array are placed on the pedestal portions provided on the main body of the pair of laying bars, and the array can be supported at both ends. A load applied to the array from above can be supported from the back side.

According to a twentieth aspect of the present invention, there is provided a photovoltaic power generation device, wherein the reinforcing member having both ends mounted on the pedestal portion is provided on the back side of the photovoltaic power generation unit array. I have. In the present invention, the reinforcing member may be provided between adjacent substrates, or may be provided corresponding to individual substrates.

According to the present invention, the load applied to the photovoltaic power generation unit array from above can be supported by the pedestal via the reinforcing member, and the deformation of the substrate during the load operation can be suppressed.

According to a twenty-first aspect of the present invention, there is provided a photovoltaic power generation apparatus characterized in that a non-combustible material is provided on the back side of the photovoltaic power generation unit array according to any one of the thirteenth to twentieth aspects.

According to the present invention, the array can be provided with fire resistance by the non-combustible material covering the back surface of the solar power generation unit array.

According to a twenty-second aspect of the present invention, a photovoltaic power generator is characterized in that the reinforcing body according to the twenty-first aspect and the non-combustible material are also used.

In the present invention, since the reinforcing member and the non-combustible material are also used, the number of parts can be reduced and the cost can be reduced.

According to a twenty-third aspect of the present invention, in the photovoltaic power generation apparatus according to any one of the thirteenth to twenty-second aspects, the protruding side edge of the sheet is formed by connecting an opening edge of the crosspiece main body to the crosspiece cover. It is characterized by being sandwiched between the inner surface.

In the present invention, the protruding side edge is pinched between the opening edge of the bar main body and the inner surface of the bar cover at a position closer to the board than the position where the clip portion of the bar main body and the bar cover sandwich the protruding side edge. As a result, it is possible to double waterproof the laying pier.

According to a twenty-fourth aspect of the present invention, in the solar power generation device according to any one of the thirteenth to twenty-third aspects, the crosspiece main body and the crosspiece cover sandwich the protruding side edge of the sheet. A protrusion is provided above the back surface of the substrate, and the protruding side edge from the substrate to the inside of the crosspiece body is directed upward.

In the present invention, the upwardly protruding side edge is opposed to the side surface in the peripheral surface of the substrate. Therefore, when the protruding side edge of the sheet is fixed to the laying bar, there is no possibility that the sheet is peeled off from the back surface of the substrate despite the side edge being pulled.

According to a twenty-fifth aspect of the present invention, there is provided a roof device, wherein the non-power generation roof material and the solar power generation device according to any one of claims 13 to 24 are used as the roof material. And the roof device respectively laid adjacent to the power generation roof material installation area where the non-power generation roof material is not laid,
It is characterized in that the solar power generation device is waterproofed by a sheet and a laying bar. This invention includes that the waterproof area of the sheet and the laying bar of the photovoltaic power generation device is equal to or larger than the area of the power generation roofing material installation region.

In these inventions, the solar power generation device according to any one of claims 13 to 24, which has waterproofness, is used as a part of the roofing material. It is possible to provide a roof device capable of waterproofing a power generation roof material installation area to be waterproof by itself.

[0052]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

FIG. 1A is a plan view showing a roof material arrangement area for a roof apparatus, for example, a sloped roof 1, and FIG.
Indicates a rectangular power generation roofing material installation area, and 3 indicates a non-power generation roofing material installation area around the area 2.

As shown in FIG. 1 (B), a photovoltaic power generation device (hereinafter abbreviated as a power generation device) 4 is laid as a roof material for generating power in the power generation roof material installation area 2, and adjacent to the photovoltaic power generation device, there is no power generation. A non-power generation roofing material 5 is laid in the roofing material installation area 3. Non-power generation roofing materials 5 include various tiles, for example, pottery tiles,
Thick slate tiles, thin slate tiles, Japanese tiles, Western tiles, etc. can be used. The power generation device 4 and the non-power generation roof material 5
Is mounted on a base plate 6 (see FIG. 3) as a laid portion provided by using fixing parts such as screws and nails. A roofing 7 is spread over the entire surface of the base plate 6 as a preferable example.

As shown in FIG. 2 and FIG.
For example, one or more, for example, a plurality of photovoltaic power generation unit arrays (hereinafter abbreviated as arrays) 11 and a plurality of laying bars 12 used for fixing the
Are formed.

As shown in FIGS. 4A and 4B, the array 11 includes a plurality of photovoltaic power generation units (this may be referred to as a solar cell module, but is abbreviated as a unit in each embodiment). These units 15 have a frameless structure, and include one or more, for example, three light-transmitting substrates 21 and a solar cell 22 (see FIG. 6) on the rear surface of the substrate 15. And a waterproof back cover 23 sealed from the side.

More specifically, the thin-film solar cell 22 provided on the back surface of the square, for example, rectangular, transparent glass substrate 21 is provided with a transparent electrode layer on the back surface of the substrate 21, and after separating the transparent electrode layer into a plurality of regions, A photovoltaic semiconductor layer such as amorphous silicon is provided on the substrate, and photovoltaic elements (cells) obtained by dividing the semiconductor layer into a plurality of regions are connected in series by a back electrode layer formed on these elements. , A pair of bus areas for collecting power is provided as an end of this connection. Further, on the back surface of the substrate 21, electrodes individually soldered to the two bus areas are mounted, and output lead wires having one end soldered to these electrodes are mounted. The other end of the output lead wire is connected to a terminal box 24 attached to the back side of the substrate 21 (see FIG. 3).
It is connected to the. Output cables (not shown) are connected to the terminal box 24, and power is guided indoors via these cables.

When unfolded as shown in FIG. 4A, the rectangular back cover 23 having a size capable of arranging the three substrates 21 at predetermined intervals is in the form of a freely deformable film. The periphery of the back cover 23 is
It protrudes from the surrounding area. 4 to 6, reference numeral 23a denotes a protruding portion of the back cover 23.

As described above, the back cover 23 is larger than the substrate 21 provided thereon.
Is not limited to the periphery of the substrate 21. On the other hand, in a configuration in which the sealing material as the back cover is substantially the same size as the substrate as in the related art, the peripheral portion of the sealing material formed larger than the substrate in advance is used.
Since there is a restriction that the cutting operation for removing the substrate to the same size as the substrate must be performed along the periphery of the substrate, it is easy to take time and effort. Moreover, the peripheral portions of the back cover 23 are overlapped and joined to each other as described later, or are stored in the laying bar 12, or are used to fit in a ridge, an eaves, a kerb, etc. Since it is enough to have a certain size or more, the size of the back cover 23 obtained by the cutting is not required to be so precise. On the other hand, in the conventional configuration, it is required to have an accuracy of removing the peripheral portion of the sealing material to substantially the same size as the substrate.

Thus, in the unit 15, it is easy to perform a cutting operation to make the back cover a predetermined size, and the cost for the cutting can be reduced. Therefore, it is excellent in that the cost of the array 11 including the plurality of units 15 and the power generation device 4 formed with the one or more arrays 11 can be reduced.

As shown in FIG. 6, the back cover 23
It is formed of three layers, for example, a weather-resistant layer 25, a moisture-proof layer 26, and an adhesive layer 27. The weather-resistant layer 25 includes a fluorine resin film, a PET resin film, a silicon resin film,
A weather-resistant material such as a polyisobutylene resin film is used. The moisture-proof layer 26 having the same size as the weather-resistant layer 25 includes
A metal foil such as an aluminum foil, a metal thin plate such as an aluminum thin plate, and a moisture-proof material such as a vinylidene chloride resin film are used. The adhesive layer 27 includes a weather-resistant layer 25 and a moisture-proof layer 26.
And an adhesive such as a silicone-based or epoxy-based adhesive is used.

The weather-resistant layer 25 of the back cover 23 having a three-layer structure is bonded to the back surface of the substrate 21 (the surface opposite to the light-receiving surface) by an adhesive layer 28. Seals the solar cell 22. Adhesive layer 2
An adhesive such as epoxy is used for 8. for that reason,
The weather-resistant layer 25 is disposed closer to the substrate 21 than the moisture-proof layer 26, and is provided so that the protruding portion 23a is exposed to the weather.

The back cover 2 of each unit 15 having the above configuration
Reference numeral 3 denotes a continuous sheet 23A formed by joining protruding portions 23a protruding in the direction in which the plurality of substrates 21 arranged thereon are arranged. An arrow P in FIG. 4B indicates a joint between the protruding portions 23a. A plurality of substrates 2 are placed on the sheet 23A by a predetermined number of the respective units 15 which are continuous by this bonding.
An array 11 in which 1s are arranged in a line is formed. The protruding portions 23a that protrude in the width direction of the array 11 and are continuous with each other form protruding side edges 23AE protruding from the respective substrates 21. The pair of protruding side edges 23AE extend in the longitudinal direction of the array 11.

The sheet 23 of the adjacent unit 15
The connection between the protruding portions 23a of A is performed as illustrated in FIG. The protruding portions 23a to be joined are overlapped with each other, and the overlapping portion 23ab is joined by a joining method such as adhesion using an adhesive, heat fusion, or solvent welding.

The bonding with the adhesive is performed when one of the protruding portions 23a to be joined is made of metal and the other is made of synthetic resin, or when the protruding portions 23a to be joined are made of metal or resin. Adopted to. As the adhesive, a silicone-based or epoxy-based adhesive is used. This bonding is performed by applying at least one adhesive of the overlapping portion 23ab of the protruding portion 23a, and then performing superposition.
It is carried out by applying a roller rolling pressure from above and bonding them together.

The heat fusion is employed when both the protruding portions 23a to be joined are made of a heat-meltable resin. This heat fusion is performed by blowing hot air onto the overlapping portion 23ab of the overlapped protruding portion 23a and heating it to fuse the overlapping portions 23ab with each other and performing roller rolling from above. Will be implemented.

In the solvent welding, the protruding portion 23a to be joined is used.
Are used when both are made of a synthetic resin that can be dissolved by a solvent. This solvent welding is performed at the protruding portion 23.
After the welding agent is attached to at least one of the overlapping portions 23ab of a, the overlapping portions 23ab are overlapped and welded, and roller rolling is performed from above.

In these joinings, as shown in FIGS. 4C and 5, a tape-shaped sealing material 29 can be sandwiched between the overlapping portions 23ab. In addition, the sealing material 30 can be applied to cover the upper joining edge 23au, that is, the joining edge of the protruding portion 23 disposed on the front side of the overlapped protruding portion 23a. Although the use of these sealing materials 29 and 30 is optional, the use thereof is preferable in that the waterproof property at the joint portion can be further improved. As the tape-shaped sealing material 29, a butyl tape, an EPDM tape, or the like can be used. Seal material 30
, A silicone-based sealing material, a modified silicone-based sealing material, a polyisobutylene-based sealing material, or the like can be used.

[0069] As shown in FIG.
Each has a beam main body 41 made of an extruded aluminum alloy material and a beam cover 42 attached to the beam main body 41.

Each of the bar-shaped beam main bodies 41 has an upwardly open opening 4 extending over the entire length of the main body 41 in the longitudinal direction.
1a, a pair of sandwiching portions 43, a convex portion 44, and a pair of pedestals 45.

The pair of sandwiching portions 43 are provided to project obliquely downward from the opening edge 41b of the opening portion 41a into the crosspiece body 41. The protruding portion 44 is provided so as to protrude upward at the center in the width direction of the flat bottom wall of the beam main body 41 and forms grooves 46 on both sides thereof. The protrusions 44 are provided with fixing holes 44 at appropriate intervals.
a is open. The groove 46 is used as water supply. The pair of pedestals 45 project laterally from the bottom outer surfaces of both side walls of the beam main body 41, and the bottom walls are continuous with the bottom wall of the beam main body 41. The height of these pedestals 45 is greater than the thickness of the terminal box 24.

A beam cover 42 having substantially the same length as the beam body 41
Is formed by providing a pair of sandwiching portions 47 on the back surface thereof and providing substrate cover portions 48 on both sides.
The clip portion 47 inserted into the beam main body 41 through the opening portion 41 a has a hook-like cross section, and is projected downward so as to be hooked on the clip portion 43. The board cover 48 is provided downward corresponding to the pedestal 45.

A cushioning material 49 is fixed to the lower surface of the board cover 48 over the entire length in the longitudinal direction. As the cushioning material 49, a cushioning material having a sealing property such as a silicone-based cushioning material, a modified silicone-based cushioning material, a polyisobutylene-based cushioning material, and the like, and which is softer than the substrate 21 and the rail cover 42 is used.

The beam main body 41 of each laying beam 12 is placed on the base plate 6 with the roofing 7 interposed therebetween, and
4 and fixed to the base plate 6 by fixing parts 50 such as screws and nails which are inserted into the base plate 6 through the respective fixing holes 44a from above. With this fixation, a waterproof sheet, that is, a roofing 7 is laid between the bottom wall of the beam main body 41 and the field board 6 so that waterproofing against rainwater that tends to enter through the fixed component 50 can be performed. The beam cover 42 to which the cushioning material 49 is attached is pushed over the beam body 41 from above, and the clip 47 is hooked on the clip 43 of the beam body 41, and the opening 41 a of the beam body 41 is closed. It is covered and attached to the beam main body 41.

Further, as shown in FIG.
A reinforcing member disposed on the back side of the array 11, for example, a plate-like reinforcing member, that is, a reinforcing plate 51 is provided. The reinforcing plate 51
The two end portions are connected to the corresponding pedestal portions 4 of the adjacent laying bar 12.
5 and provided over these pedestals 45,
The array 11 is supported from behind. In the reinforcing plate 51,
Wood or an aluminum alloy as a non-combustible material, metal such as steel or stainless steel, calcium silicate or the like can be used, and those obtained by coating or weathering a film thereon can also be used. In particular, the use of non-combustible materials is preferred. The arrangement of the reinforcing plate 51 is illustrated in FIGS.

FIG. 7A shows the array 11 and the reinforcing plate 51.
When viewed from the back side, the arrangement mode in which the reinforcing plate 51 is provided so as to straddle over the adjacent substrate 21 is illustrated. With this arrangement, the terminal boxes 24 of the array 11 can be located between the reinforcing plates 51 that are arranged at intervals like the substrate 21 without interfering with the reinforcing plates 51. No processing is required to escape the terminal box 24.

FIG. 7 (B) shows that when the array 11 and the reinforcing plate 51 are viewed from the back side,
2 illustrates an arrangement mode provided individually. In this case, the reinforcing plate 51 has an escape hole 51a for allowing the terminal box 24 to escape.

In any of the above arrangements, the reinforcing plate 51 is positioned so that both ends thereof are restrained to the pedestal 45 by an adhesive or the like so that the reinforcing plate 51 does not inadvertently move with respect to the beam main body 41. . In the case of FIG. 7B, the reinforcing plate 51 may be bonded to the back surface of the array 11 in advance.

Further, a non-combustible material having an escape portion for escaping the terminal box 24 and having a length substantially equal to the length of each unit 15 in the eaves direction and having both ends supported by the pedestal portion 45 as described above. A plurality of reinforcing plates (not shown) made of steel may be used and arranged so as to be laid between adjacent laying bars 12. In this case, the plurality of continuous reinforcing plates can support each unit 15 disposed on the reinforcing plates from the back side, and the non-combustibility of each reinforcing plate can provide fire protection to the entire array 11. Moreover, since each reinforcing plate also serves as a non-combustible material, the cost can be reduced as compared with a case where these are individually provided.

Next, a procedure for laying the power generation device 4 on the roof 1 will be described.

First, the beam main body 41 of each laying bar 12 is fixed on the base plate 6 on which the roofing 7 is spread so as to extend in the direction of the ridge. By this fixing, each crosspiece main body 41 is moved in the power generation roof material installation area 2 of the roof 1.
The roof 1 is arranged parallel to each other at predetermined intervals in the girder direction. After this, the corresponding pedestal portion 45 of the adjacent crosspiece body 41
, A plurality of reinforcing plates 51 are respectively erected.

Next, the array 11 is loaded on the roof 1 and
It is arranged over the corresponding pedestal part 45 of the adjacent crosspiece main body 41. As a result, the array 11 is temporarily placed on the reinforcing plate 51 so as to extend in the building eaves direction. In this case, array 1
The protruding side edges 23AE extending in the longitudinal direction of the sheet 24 provided in 1 are bent upward along the side wall outer surfaces of the corresponding bar bodies 41, and then cover the sandwiching portions 43 of the bar body 41. The opening 41a is provided in the main body 41.
Housed through. This accommodation state is shown in the right part of FIG. In the temporary placement of the array 11 described above,
It is preferable to arrange the upper joint edge 23au of the joint portion so as to face the eaves side, because the joint edge 23au can prevent the rainwater from flowing down.

The array 11 may be loaded on the roof 1 in a state in which the array 11 has already been assembled. However, a plurality of units 15 constituting the array 11 are individually loaded on the roof 1, and these units 15 are loaded. While assembling the array 11 by bonding the 15 back covers 23 on the roof 1, the array 11 can be temporarily placed as described above.

This case is preferable in the following points. That is, the assembled array 11 has a large total weight because it has a large number of substrates 21, and it may be necessary to use a crane or the like to carry it into the roof 1 and handle it on the roof 1. However, the units 15, which are much smaller in weight and size than the array 11 and are therefore easier to handle, are individually loaded onto the roof 1, and are joined on the roof 1 by the above-described joining.
In the case of 1, it is not necessary to handle the heavy array 11. Therefore, the array 11 can be easily placed temporarily without using a special device such as a crane.

Thereafter, the array 11 which is temporarily placed adjacently is
The laying bar 12 is assembled by pressing the bar cover 42 from above the bar body 41 in which the protruding side edge portions 23AE are accommodated from both sides as described above. With this assembly, the sandwiching portion 47 of the crosspiece cover 42 is moved to the protruding side edge 23.
While dragging the AE, the AE rides over the holding portion 43 of the beam main body 41 downward and is caught by the holding portion 43. For this reason, both the sandwiching portions 43 and 47 sandwich the projecting side edge 23AE, and the projecting side edge 23AE located outside the beam main body 41 is stretched. Moreover, in this case, the inner surface of the crosspiece cover 42 comes into contact with the protruding side edge portion 23AE covering the opening edge 41b of the crosspiece body 41, and the protruding side edge portion 23AE is sandwiched therebetween. At the same time as the mounting of the beam cover 42, the board cover 4
8 sandwiches the side edge of each substrate 21 of the array 11 with the pedestal 45 while elastically deforming the cushioning material 49.

In the laying work of the array 11 described above,
Since the portion of the sheet 23A sandwiching the protruding side edge 23AE of the sheet 23A between the beam main body 41 and the beam cover 42 is located above the back surface of the substrate 21, the protruding side edge extending from the substrate 21 to the inside of the beam main body 41 is provided. 23AE can be turned upward. This state is shown in the left part of FIG. As a result, the upwardly protruding side edge 23AE faces the inner surface 21a of the peripheral surface of the substrate 21. Therefore, although the protruding side edge 23A is pulled as described above as it is fixed to the laying bar 12, the substrate 2
The sheet 23A is peeled off from the back of
There is no danger that the sealing performance of the device will decrease.

By repeating the above operations one after another in the direction in which the girder of the roof 1 extends, the power generation roof material installation area 2
The entire power generator 4 is laid. In this laying work, a power generation group is formed by connecting output cables drawn from each terminal box 24 in series, and the work of drawing the output of this group indoors is performed. When the power generation group is formed, the output cable can be routed in the longitudinal direction of the array 11 by carrying out the power generation group with one array 11.
It is excellent in that it can be easily carried out without being disturbed by 2.

After the laying of the power generation device 4 described above, the non-power generation roof material 5 is laid on the non-power generation roof material installation area 3 around the power generation device 4. Fig. 1 (B)
Schematically shown in FIG.

As shown in FIG. 2, the sheet 23A of the power generation device 4 has a ridge-side protruding side edge 23AU and an eave-side protruding side edge 23AD, which can be freely deformed. Therefore, these side edges 23AU,
Fitting in the ridge, eaves, kerb, etc. of the 23AD can be handled and carried out in the same manner as the roofing 7.

In FIG. 2, a two-dot chain line indicates a waterproof dummy sheet 55. The sheet 55 is freely deformable with the same thickness as the sheet 23A, and is attached to the laying bar 12 in the same manner as the protruding side edge 23AE of the sheet 23A with the laying bar 12 being assembled. It is laid around the power generation roofing material installation area 2 and is used to double waterproof around the power generation roofing material installation area 2. The dummy sheet 55 may be omitted.

The array 11 of the power generators 4 constituting the roof material of the roof 1 configured as described above is formed by connecting a plurality of units 15 as described above.
By making the waterproof back covers 23 of the larger units 15 continuous with each other, one sheet 23A is formed by these covers 23. Therefore, by the sheet portion located between the substrates 21 adjacent in the eaves ridge direction in the array 11,
The space between the substrates 21 is waterproofed. Further, the protruding side edge 23AE of the sheet 23A of each array 11 is sandwiched between the sandwiching portion 43 of the beam main body 41 and the sandwiching portion 47 of the beam cover 42 by assembling the laying bar 12 for laying the array 11. Therefore, the space between the bar 12 and the protruding side edge portion 23AE is waterproofed inside the laid bar 12. In addition, since the protruding side edge 23AE is sandwiched between the opening edge 41b of the beam main body 41 and the inner surface of the beam cover 42 on the substrate 21 side of both the clipping portions 43 and 47, the laying down of the 12 can be waterproofed.

As described above, the power generation roof material installation area 2 of the roof 1
The power generation device 4 laid as a roofing material can waterproof the power generation roofing material installation area 2 by the waterproof sheet 23A and the laying bar 12 provided therein. In addition, by having the protruding side edges 23AU and 23AD and the dummy sheet 55, the waterproof area by the power generation device 4 is larger than the area of the region 2.

Therefore, since the area 2 is waterproofed by the primary waterproofing by the power generation device 4 and the secondary waterproofing by the roofing 7, the waterproofing performance can be improved. Further, since the power generator 4 performs primary waterproofing as described above, the roofing in the area 2 may be omitted in some cases, and the roofing 7 is spread over the non-power generation roof material installation area 3 where the power generator 4 is not laid. It is also possible to set it to 1. In this case, the roofing work becomes easier, and the amount of the roofing 7 used can be reduced, so that the roof 1 can be roofed at low cost.

In the above-described laying, the fixing part 5 is provided on the protrusion 45 provided on the inner bottom of the beam main body 41 from above.
Since the crosspiece body 41 is fixed to the base plate 6 through 0, there is no need to perform the work of passing the fixed component 50 in the recessed portion of the crosspiece body 41. Therefore, the work of fixing the beam main body 41 to the base plate 6 can be facilitated. In addition, since the groove 46 extending in the ridge direction is formed in the crosspiece main body 41 by the convex portion 45, the groove 46 is used as water supply in case rainwater infiltrates the laying bar 12 by any chance. it can. Therefore, it is possible to prevent the fixed component 50 passing through the convex portion 45 at a position higher than the groove 46 from being exposed to rainwater passing through the groove 46. Therefore, it is possible to prevent rainwater from being guided to the base plate 6 along the fixed component 50. In particular, since the grooves 46 are provided on both sides of the convex portion 45, the water flowing down on the inner surfaces of both side walls of the laying bar 12 does not travel to the convex portion 45, so that the flooding of the field board 6 is more reliably performed. Can be prevented.

The array 11 includes a plurality of substrates 21 arranged in a line on a sheet 23A.
A protruding side edge 23A protruding on both sides in the width direction of A
E is used as a fixing portion to the laying bar 12. Therefore, the interval between the side edges 23AE is as short as the length of the substrate 21 in the width direction. Along with it, the adjacent laying bar 1
Since the distance between the two is reduced, the array 11 can be laid in the power generation roofing material installation area 2 so that the array 11 is hard to move due to wind or the like. Therefore, the sheet portion located between the adjacent substrates 21 does not need to be fixed to the base plate 6 by another fixing means, so that a hole is not formed in the sheet portion. Therefore, the waterproof performance of the sheet 23A is not impaired.

In this embodiment, the array 11 is
The rainwater flowing down on the array 11 is not blocked by the laying bar 12 because the laying extends in the direction of the eaves. Therefore, rainwater flows smoothly toward the eaves.

Since both side edges 21b (see FIG. 3) of each substrate 21 provided in the array 11 of the power generator 4 are pressed from above by the substrate cover portion 48 of the beam cover 42 via the cushioning material 49, the wind pressure is reduced. Upswing of the array 11 due to an earthquake, an earthquake, or the like can be suppressed. Moreover, the side edge 2 of the substrate 21
Since the soft cushioning material 49 sandwiched between 1b and the substrate cover portion 48 is elastically deformed, the vibration of the array 11 can be further suppressed. In addition, the cushioning material 49 can prevent the rigid substrate 21 and the substrate cover portion 48 from hitting each other and being damaged. Further, as described above, the waterproofness between the substrate 21 and the substrate cover portion 48 can be achieved by the sealing property of the cushioning material 49 sandwiched by the elastic deformation. Therefore, it is possible to further reduce the risk that the rainwater will enter the laying bar 12 along the protruding side edge 23AE.

Each substrate 2 included in the array 11 of the power generator 4
1 is supported at both ends from the back side by the reinforcing plates 51 supported at both ends of the pedestal portion 45 of the beam main body 41, so that the load applied to the array 11 from above by wind pressure or the like can be supported from below. Therefore, the load on the protruding side edge 23AE during the load operation is reduced, and the durability thereof can be improved. In addition, the deformation of the substrate 21 due to the operation of the load can be suppressed, and the durability of the substrate 21 can be improved. Moreover,
By such reinforcement, the board 21 can be designed not to have enough strength to withstand a large wind pressure by itself, so that the degree of freedom in board design is improved, and the board 21 is thinned and the power generation device 4 is lightweight. It is also possible to achieve cost reduction and cost reduction.

As described above, the sheet 23A provided in the power generation device 4 has the weather-resistant layer 25 on the front side and the moisture-proof layer 26 on the back side. The roof surface reaches a high temperature of 85 ° C. due to solar radiation, and is also exposed to rain, sunlight, and the like. Nevertheless, the weather-resistant layer 25, which is responsible for the weather resistance, is provided on the substrate 21 side of the moisture-proof layer 26 so as to be exposed to the weather, so that the durability of the sheet 23A can be ensured by the weather-resistant layer 25. Further, since moisture spreads from the back side of the array 11 to the solar cell 22 on the back side of the substrate 21, there is a possibility that the array 11 may have an adverse effect. However, since the moisture can be blocked by the moisture-proof property of the moisture-proof layer 26, the solar cell 22 can be protected from moisture and the life of the array 11 can be prevented from being shortened.

FIGS. 8 and 9 show a second embodiment of the present invention. This embodiment is basically the same as the first embodiment.
The same reference numerals as in the first embodiment denote the same components, and a description thereof will be omitted. Hereinafter, different configurations will be described. This embodiment differs from the first embodiment in the configuration of the back cover forming the sheet and the method of joining the back covers together.

As shown in FIG. 8, the back cover 23 of each unit 15 includes a weather-resistant layer 25, a moisture-proof layer 26, and an adhesive layer 2.
7, an adhesive layer 31, and a thermoplastic resin layer 32. The same adhesive as the adhesive layer 27 is used for the adhesive layer 31, and the thermoplastic resin layer 32 is adhered to the back surface of the moisture-proof layer 26 by the adhesive layer 31. Thermoplastic resin layer 32
For example, a vinyl chloride resin can be suitably used.

The back covers 23 of the adjacent units 15 are joined as shown in FIG. 9 (A) or FIG. 9 (B). In FIG. 9A, the tip side of the protruding portion 23a of one back cover 23 is folded upward to form a double, and the protruding portion 23a of the other back cover 23 is superimposed on the double side. An example is shown in which the two parts are joined by heating the jointed portion with hot air. FIG. 9 (B)
Shows an example in which the protruding portion 23a of the other back cover 23 is superimposed on the upper surface of the protruding portion 23a of one back cover 23, and the bonded portion is heated by hot air to join the two. The sheet 23 </ b> A can be formed by simply heat-sealing the back covers 23 to each other and continuing them.

The configuration other than the points described above is the same as that of the first embodiment. Therefore, the second embodiment can obtain the same operation as that of the first embodiment, and can solve the problem of the present invention.

FIGS. 10 to 12 show a third embodiment of the present invention. Since this embodiment is basically the same as the first embodiment, the same components as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and the description thereof is omitted. A different configuration will be described. This embodiment is different from the first embodiment in the configuration of the back cover forming a sheet.

As shown in FIG. 11, the back cover 23 of each unit 15 has a weather-resistant layer 25, a moisture-proof layer 26, and an adhesive layer 2.
7, adhesive layer 31, and conductor layer 33 as a function adding layer
And is formed from Adhesive layer 27 on back of weatherproof layer 25
The conductor layer 33 is adhered via the. The width of the conductor layer 33 is larger than the width of the weather-resistant layer 25 and the moisture-proof layer 26, and therefore, both side edges 33a (only one is shown) of the conductor layer 33 protrude. For the conductor layer 33, any metal can be used, and aluminum foil or an ultrathin plate can be suitably used. Since the metal conductive layer 33 has non-combustibility, it can also function as a non-combustible layer, and since it has strength compared to other layers, it can also function as a reinforcing layer. The same adhesive as the adhesive layer 27 is used for the adhesive layer 31, and the moisture-proof layer 26 is adhered to the back surface of the conductor layer 33 via the adhesive layer 31.

The configuration other than the points described above is the same as that of the first embodiment. Therefore, the third embodiment can obtain the same operation as the first embodiment, and can solve the problems of the present invention. Excellent in terms of.

The adjacent back covers 23 are joined as shown in FIG. In other words, the protruding portion 23a of one back cover 23 is folded back at the tip end side to form a double portion, and this double portion is overlapped on the protruding portion 23a of the other back cover 23 and joined. At this time, the side edge 3 protruding from the protruding edge 23a of the conductor layer 33
3a are electrically connected to each other by being overlapped with each other and bonded via a conductive adhesive containing metal powder. Thus, an array 11 in which adjacent units 15 are electrically connected to each other can be formed.
Can be easily grounded directly or via the laying bar 41 or the like.

Further, since the metal conductive layer 33 over the entire sheet 23A can also function as a reinforcing layer, FIG.
As shown at 0, the sheet 23A can be given the strength necessary for the array 11 to fix the protruding side edge 23AE of the sheet 23A via the laying bar 12.
In addition, the metal conductive layer 3 over the entire sheet 23A
Since 3 can also function as a non-combustible layer, the sheet 23A can be provided with fire resistance.

Furthermore, since the single-layer conductor layer 33 also serves as the reinforcing layer and the non-combustible layer as described above, the number of layers of the sheet 23A is reduced as compared with the case where these layers are separately provided. The structure is simple and the cost can be reduced. In the present embodiment, most of the above-described conductor layer 33 is provided inside the sheet 23A, and the sheet 23A
Since it is not exposed to the outside, it is preferable in terms of rust prevention of the metal conductive layer 33, and rust prevention treatment can be omitted or hardly required.

In the present invention, when the function-adding layer does not require the function as a conductor, and when the function-adding layer provides a reinforcing property, the function-adding layer is made of calcium silicate or wood instead of the metal material. A layer may be formed. Similarly,
When the function addition layer does not require the function as a conductor,
In the case where the function-adding layer is made nonflammable, the function-adding layer may be formed of calcium silicate or the like instead of the metal material.

FIG. 13 shows a fourth embodiment of the present invention. Since this embodiment is basically the same as the first embodiment, the same components as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and the description thereof is omitted. A different configuration will be described. This embodiment differs from the first embodiment in the relationship between the protruding side edge of the sheet and the inner surface of the crosspiece cover, and the configuration of the crosspiece of the crosspiece body.

As shown in FIG. 13, the sandwiching portion 47 of the beam main body 41 is formed to project substantially horizontally from a position slightly lower than the opening edge 41b of the beam main body 41. The height of the board cover portion 48 of the crosspiece cover 42 or the thickness of the cushioning material 49 is larger than that of the first embodiment. Accordingly, a gap G is provided between the opening edge 41a of the crosspiece main body 41 and the inner surface of the crosspiece cover 42, and the protruding side edge 23AE of the sheet 23A is passed through the gap G.

The configuration other than the points described above is the same as that of the first embodiment. Therefore, the fourth embodiment can achieve the same operation as that of the first embodiment, and can solve the problem of the present invention.

FIG. 14 shows a fifth embodiment of the present invention. Since this embodiment is basically the same as the first embodiment, the same components as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and the description thereof is omitted. A different configuration will be described. This embodiment is different from the first embodiment in the configuration such as attachment of the beam main body and the beam cover to the beam main body.

As shown in FIG. 14, the holding portion 47 of the beam main body 41 projects substantially horizontally so as to form an opening edge of the beam main body 41, and a plurality of screw holes (not shown) are formed at appropriate portions thereof. ing. The crosspiece main body 41 does not have a pedestal portion.
Instead, in this embodiment, an auxiliary beam 37 forming a pedestal portion is disposed on at least one side of the beam main body 41, and the beam 37 is fixed to the base plate 6 via the fixing component 36. A groove 37 for accommodating the head of the fixed component 36 so that the head does not protrude from the (array mounting surface).
a is provided. Moreover, the crosspiece main body 41 does not have a convex portion on its inner bottom portion, and the crosspiece main body 41 is fixed to the base plate 6 by a fixing component 50 penetrating the bottom wall.

The crosspiece 47 employed in the first embodiment is not used for the crosspiece cover 42. Instead, the crosspiece 42 is arranged with the inner surface thereof placed on the crosspiece 43 and the screw The opening 41a is closed to the beam main body 41 via a screw 38 screwed into the hole and fixed. With the attachment of the crosspiece cover 42, the protruding side edge 23AE of the sheet 23A is sandwiched between the sandwiching portion 43 and the inner surface of the crosspiece cover 42. The board cover 48 of the rail cover 42 is bent toward the board 21.

The configuration other than the points described above is the same as that of the first embodiment. Therefore, the fifth embodiment can obtain the same operation as that of the first embodiment, and can solve the problem of the present invention.

[0118]

The present invention is embodied in the form described above and has the following effects.

According to the first aspect of the present invention, since one sheet is formed by connecting the waterproof back cover for sealing provided in the adjacent solar power generation unit to each other, this sheet is provided. This allows waterproofing between adjacent substrates. Therefore, a solar power generation unit array having waterproofness can be provided.

According to the photovoltaic power generation unit array according to the second aspect of the present invention, the sheet portion located between the adjacent substrates is fixed to the laid portion without impairing the waterproofness.
Further, the solar power generation unit array can be fixed to the laid portion so as not to be shaken by wind or the like.

According to the photovoltaic power generation unit array of the invention according to claim 3, durability can be ensured by the weather resistance and moisture proofness of the sheet.

According to the photovoltaic power generation unit array of the invention according to claim 4, grounding can be easily achieved by the conductive layer of the sheet.

According to the photovoltaic power generation unit array of the invention according to claim 5, the sheet strength necessary for fixing the array can be ensured by the reinforcing layer of the sheet.

According to the solar power generation unit array of the invention according to claim 6, fire resistance can be ensured by the non-combustible layer of the sheet.

According to the photovoltaic power generation unit array of the invention according to claim 7, the thermoplastic resin layers on the back cover of the adjacent photovoltaic power generation unit are continuously joined by heat fusion.
A sheet can be easily formed.

According to the photovoltaic power generation unit array of the eighth aspect of the present invention, since the conductive layer, the reinforcing layer and the non-combustible layer of the sheet are also used as a single layer, the structure of the sheet is simple and the cost can be reduced.

According to the ninth and tenth aspects of the present invention, the protrusions of the sealing back cover of adjacent photovoltaic power generation units are overlapped with each other and joined to each other, so that waterproofing between adjacent substrates is prevented. Since the photovoltaic power generation unit array provided with one sheet is formed, a method of manufacturing a waterproof solar power generation unit array can be provided.

According to the eleventh and twelfth aspects of the present invention, a tape-shaped sealing material interposed between the protruding portions to be joined,
Alternatively, it is possible to provide a method of manufacturing a solar power generation unit array capable of improving waterproofness by using a sealing material attached to an upper joint edge of the joined protruding portion.

According to the photovoltaic power generators of the inventions according to the thirteenth and fourteenth aspects, the sheets between the substrates of the photovoltaic power generation unit array having the back cover joined to form one sheet are waterproofed by the sheets. In addition to this, the protruding side edge of the sheet is sandwiched inside the laying bar for fixing the array, and the sandwiched portion can be waterproofed. Therefore, a solar power generation device having waterproofness can be provided.

[0130] According to the photovoltaic power generator of the fifteenth aspect, the fixing component for fixing the beam main body to the laid portion can be prevented from entering the inside of the laid beam and being exposed to the water flowing through the groove. In addition, it is possible to prevent water from being guided to the laid portion along the fixed component.

According to the photovoltaic power generator of the invention, water can be prevented from entering the laid portion by the waterproof sheet provided between the laid portion and the main body.

According to the photovoltaic power generation device of the invention, the board cover of the crosspiece can suppress the fluctuation of the photovoltaic power generation unit array accompanying the load on the protruding side edge.

According to the photovoltaic power generation device of the eighteenth aspect, the cushioning material provided between the substrate and the substrate cover can prevent the substrate and the substrate cover from being damaged by hitting each other.

According to the photovoltaic power generation device of the nineteenth aspect, since the load applied from above to the photovoltaic power generation unit array is supported by the pedestal portion provided on the crosspiece main body, the array of the photovoltaic power generation unit when the load acts is supported. The load on the protruding side edge can be reduced.

According to the photovoltaic power generator of the twentieth aspect, the deformation of the substrate when a load is applied to the photovoltaic power generation unit array from above can be suppressed, and the durability can be improved.

According to the solar power generation device of the twenty-first aspect, fire resistance can be provided by the non-combustible material covering the back surface of the solar power generation unit array.

According to the photovoltaic power generator of the present invention, since the reinforcing body and the non-combustible material are used, the number of parts can be reduced, and the cost can be reduced.

According to the photovoltaic power generator of the twenty-third aspect of the present invention, since the waterproofing at the laying bar is double, the waterproofness of the entire power generator can be further improved.

According to the photovoltaic power generator of the invention according to claim 24, with the protruding side edge fixed to the laying bar,
There is no possibility that the sheet is peeled off from the back surface of the substrate and the sealing property is deteriorated.

According to the roof device of the invention according to claims 25 and 26, the solar power generation device according to any one of claims 13 to 24 having waterproofness is used as a part of the roof material. In addition, it is possible to provide a roof device capable of waterproofing the installation area of the solar power generation device by itself.

[Brief description of the drawings]

FIG. 1A is a plan view showing a mutual relationship between an arrangement area of a photovoltaic power generation device and a non-power generation roof material according to a first embodiment of the present invention with respect to a sloped roof. (B) is the first for sloped roof
The top view which shows the example of arrangement | positioning of the solar power generation device and non-power generation roof material which concern on embodiment.

FIG. 2 is an enlarged plan view showing a part of the photovoltaic power generator of FIG. 1 (B).

FIG. 3 is a cross-sectional view taken along the line ZZ in FIG. 1B and partially exploded.

FIG. 4A is a plan view showing a photovoltaic power generation unit array provided in the photovoltaic power generation device according to the first embodiment. (B)
FIG. 5 is a schematic side view showing the photovoltaic power generation unit array of FIG. FIG. 5C is an enlarged view of a Y part in FIG.

FIG. 5 is a perspective view showing an example of joining solar power generation units that form the solar power generation unit array according to the first embodiment.

FIG. 6 is a sectional view taken along the line XX of FIG.

FIGS. 7A and 7B are diagrams illustrating different correspondences between a substrate and a reinforcing plate of the photovoltaic power generation unit array according to the first embodiment.

FIG. 8 is a cross-sectional view corresponding to FIG. 6, showing a photovoltaic power generation unit array provided in a photovoltaic power generation device according to a second embodiment of the present invention.

FIGS. 9A and 9B are schematic side views showing different examples of bonding between solar power generation units included in the solar power generation device according to the second embodiment.

FIG. 10 is a sectional view corresponding to FIG. 3, showing a photovoltaic power generator according to a third embodiment of the present invention.

FIG. 11 is a cross-sectional view corresponding to FIG. 6, showing a photovoltaic power generation unit array included in the photovoltaic power generation device according to the third embodiment.

FIG. 12 is a sectional view showing an example of joining solar power generation units included in the solar power generation device according to the third embodiment.

FIG. 13 is a sectional view showing a photovoltaic power generator according to a fourth embodiment of the present invention.

FIG. 14 is a sectional view showing a solar power generation device according to a fifth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Roof (roof apparatus) 2: Power generation roof material installation area 3: Non-power generation roof material installation area 4: Photovoltaic power generation apparatus 5 ... Non-power generation roof material 6 ... Field board (laying part) 7: Roofing (waterproof sheet) DESCRIPTION OF SYMBOLS 11 ... Photovoltaic power generation unit array 12 ... Laying bar 15 ... Photovoltaic power generation unit 21 ... Substrate 21a ... Side surface of the substrate facing the protruding side edge 21b ... Side edge of the substrate 22 ... Solar cell 23 ... Back cover 23a ... Back cover Extruded portion 23ab ... Overlap portion of the extruded portion 23au ... Upper joining edge of the extruded portion 23A ... Sheet 23AE ... Extruded side edge of the sheet 24 ... Terminal box 25 ... Weatherproof layer 26 ... Moistureproof layer 27, 28, 31 ... Adhesive layer 29: Tape-shaped sealing material 30: Sealing material 32: Thermoplastic resin layer 33: Conductive layer serving also as reinforcing layer and non-combustible layer 41: Beam body 41a: Opening of beam body 1b: Opening edge of beam main body 42 ... Beam cover 43 ... Pinching portion of beam main body 44 ... Convex portion 45 ... Pedestal portion 46 ... Groove 47 ... Pinching portion of beam cover 48 ... Board cover portion 49 ... Buffer material 50 ... Fixed parts 51: Reinforcement plate (reinforcement) also serving as non-combustible layer

Claims (26)

[Claims] 1. A solar power generation system comprising: a plurality of solar power generation units each having at least one light-transmitting substrate provided with a solar cell on a back surface sealed with a waterproof back cover from the back surface side; A photovoltaic power generation system, wherein the back cover has a peripheral portion formed to have a size protruding from the substrate, and each back cover forms a sheet by connecting the protruding portions to each other. Unit array. 2. Each of the substrates is arranged in a row on the sheet, and both side edges of the sheet form protruding side edges protruding from the substrate in a direction orthogonal to a direction in which the rows extend. 2. The photovoltaic power generation unit array according to claim 1, wherein the protruding side edges are used as fixing portions to the laid portion. 3. 3. The solar power generation unit array according to claim 1, wherein the sheet has weather resistance and moisture resistance. 4. The solar power generation unit array according to claim 1, wherein the sheet has a conductor layer. 5. The solar power generation unit array according to claim 1, wherein the sheet has a reinforcing layer. 6. The photovoltaic power generation unit array according to claim 1, wherein the sheet has a non-combustible layer. 7. The solar power generation unit array according to claim 1, wherein the sheet has a thermoplastic resin layer. 8. The sunlight according to claim 6, wherein the conductor layer, the reinforcing layer, and the non-combustible layer are also used as the same layer, and are made of a metal material. Power generation unit array. 9. A plurality of one or more light-transmitting substrates each having a solar cell provided on the back surface, sealed from the back surface side with a waterproof back cover formed to be larger than the one or more substrates. The photovoltaic power generation unit, the protruding portions of the back cover that protrude from the periphery of the substrate are overlapped with each other, and the overlapping portions are joined so that the back cover of each photovoltaic power generation unit becomes a single sheet. A method for producing a photovoltaic power generation unit array, wherein the photovoltaic power generation unit arrays are connected to each other. 10. The method for manufacturing a photovoltaic power generation unit array according to claim 9, wherein the joining is performed by a kind of joining method selected from the group consisting of adhesion using an adhesive, heat fusion, and solvent welding. . 11. The method for manufacturing a photovoltaic power generation unit array according to claim 9, wherein the joining is performed with a tape-shaped sealing material interposed between the overlapped protruding portions. 12. The photovoltaic power generation unit according to claim 9, wherein in the joining, a sealing material is applied so as to cover an upper joining edge of the protruding portion. Array manufacturing method. 13. A photovoltaic power generation unit array according to any one of claims 1 to 8, wherein the photovoltaic power generation unit array has an opening opening upward, and a sandwiching portion on the opening side. A beam body fixed to an laid portion along a side edge of the photovoltaic power generation unit array, and a protruding side edge portion of the sheet protruding from the side edge being housed covering the sandwich portion; And a plurality of laying bars provided with a beam cover that is attached to the beam body while sandwiching the protruding side edge portion between the clip portion and the clip portion and closing the opening. Photovoltaic device. 14. The photovoltaic power generation device according to claim 13, wherein the crosspiece cover has a clip portion that is hooked on the clip portion, and the protruding side edge is clamped by the clip portions. 15. A ridge for forming a groove on an inner bottom portion of the crosspiece body, and the crosspiece body is laid by a fixed component that penetrates the protrusion from above and is inserted into the laying portion. The solar power generation device according to claim 13, wherein the solar power generation device is fixed to a part. 16. The photovoltaic power generator according to claim 15, wherein a waterproof sheet is laid between the beam body and the laid portion. 17. A board cover portion provided on the crosspiece cover for stopping side edges of a plurality of boards provided in the photovoltaic power generation unit array from above.
The photovoltaic power generator according to any one of to 16. 18. The photovoltaic power generator according to claim 17, wherein a cushioning material is provided between the substrate cover and a side edge of the substrate. 19. The pedestal body is provided with a pedestal portion for supporting a side edge of the substrate from a back surface side.
The solar power generation device according to any one of 3 to 18. 20. The photovoltaic power generation device according to claim 19, wherein a reinforcing member having both ends mounted on the pedestal portion is provided on the back side of the photovoltaic power generation unit array. 21. The photovoltaic power generator according to claim 13, wherein a non-combustible material is provided on the back side of the photovoltaic power generation unit array. 22. The photovoltaic power generator according to claim 21, wherein the reinforcing body and the non-combustible material are used in combination. 23. The apparatus according to claim 13, wherein the protruding side edge of the sheet is sandwiched between an opening edge of the beam main body and an inner surface of the beam cover. Solar power generator. 24. The protruding side edge extending from the substrate to the inside of the bar body by providing a portion where the bar main body and the bar cover sandwich the protruding side edge of the sheet above the back surface of the substrate. The photovoltaic power generator according to any one of claims 13 to 23, wherein the portion is directed upward. 25. A non-power generation roofing material and the above-mentioned items 13 to
24. A roof device in which the solar power generation device according to any one of 24 is laid as a roof material adjacent to the non-power generation roof material, wherein the non-power generation roof material is not laid. A roof device wherein an installation area is waterproofed by a sheet and a laying bar of the solar power generation device. 26. The roof device according to claim 25, wherein a waterproof area of the solar power generation device by a sheet and a laying bar is equal to or larger than an area of the power generation roof material installation region.