JP2007067131A - Waterproof material integrated with solar cell and construction method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the degradation of power generation capability of a solar cell by reducing the influence of solvent welding, adhesion, or thermal fusion carried out upon the construction of the waterproof material when waterproof material is constructed as integrated with the solar cell. <P>SOLUTION: In the waterproof material integrated with the solar cell, a thin-film amorphous solar cell is sealed and embedded in an intermediate resin layer in the waterproof material formed by successively laminating a synthetic resin layer consisting of a synthetic resin, the intermediate resin layer, and a surface resin layer. A periphery consisting of the waterproof material is formed in a state of projecting externally from the embedded region of the solar cell. Further, the output leads of the solar cell are led out from the rear face side of a substrate sheet layer. In the construction method of the output leads, the necessary parts of the periphery and the sheet bonding member are bonded by solvent welding, adhesion, or thermal fusion, in a state wherein the output leads are received under the waterproof material integrated with the solar cell. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a solar cell-integrated waterproof sheet material in which solar cells are integrally attached to a waterproof sheet laid on a housing such as a roof of a building, and a construction method thereof.

  As a method of installing solar cells on waterproof construction surfaces such as roofs of buildings, it is common to fix a stand to the waterproof construction surface and attach a panel with solar cells embedded on this stand. is there. However, since this base is fixed by penetrating anchors such as anchor nails on the waterproof construction surface, waterproofing must be performed around the fixing through holes after fixing. In many cases, the work is performed in a narrow space, and it is likely to be a large-scale work, and the work itself is often difficult. Moreover, it is often difficult to perform maintenance.

  Therefore, a method using a solar cell integrated waterproof sheet material is known as a method for efficiently installing a solar cell on a waterproof construction surface without requiring a large-scale work. (Patent Document 1)

  As shown in FIG. 8, this method is a method of forming a thin film-like flexible amorphous solar cell 3 having a smaller outline on the upper surface of a flat rectangular waterproof base layer 10 and protecting with fluorine resin or the like on both sides. A solar cell-integrated waterproof sheet material 21 that is laminated and integrated in a state where the layers are coated is prepared, and the outer peripheral edge portion 14 composed of the underlayer 10 is mutually connected to the outer peripheral edge portion 14 of the adjacent solar cell-integrated waterproof sheet material. They are made by overlapping and joining their outer peripheral edge portions with an adhesive. This construction method is characterized by being performed in the same manner as a normal waterproof sheet construction method.

Moreover, this solar cell integrated waterproof sheet material 21 is one in which the output lead wire 5 of the solar cell is drawn from the end of the solar cell 3, and the wiring construction is performed between the solar cell integrated waterproof sheet materials 21. After the outer peripheral edge portions 14 are joined to each other, the output conducting wire 5 drawn out from the solar cell of the adjacent solar cell integrated waterproof sheet material 21, or a separately provided trunk and solar cell integrated waterproof sheet material 21. This is done by connecting on the upper surface of the wire.
JP 07-127192 A

  In the construction method of Patent Document 1, since a normal waterproof sheet construction method is applied, the side edges of the solar cell-integrated waterproof sheet material are joined by solvent welding, adhesion, or heat fusion. Is assumed.

  However, the solar cell-integrated waterproof sheet material of the above document has a configuration in which a thin-film flexible amorphous solar cell with a smaller contour is placed on the upper surface of a flat rectangular waterproof base layer. In the case where the outer peripheral edge portions made of the base layer are joined together by solvent welding, adhesion, or heat fusion, the location to be joined becomes a position adjacent to the end of the solar cell, and the solvent, adhesive or There is a problem that heat passes through the underlayer and impairs the power generation function of the solar cell. That is, in the case of solvent welding or adhesion, a part of the solvent or adhesive contacts the end of the solar cell or diffuses in the protective layer coating the solar cell, reaches the solar cell, and reaches its amorphous state. In the case of thermal fusion, heat generated from a heater, an induction heater or the like directly heats the amorphous silicon element and causes thermal degradation.

  On the other hand, since the solar cell-integrated waterproof sheet material has a configuration in which the output conducting wire is drawn from the end portion of the solar cell, the connection work is performed after joining the outer peripheral edge portions made of the base layer. Such a connection portion is exposed to the external environment, and requires a waterproofing process such as a new sealing process, which requires labor. Further, since the output lead wire is exposed on the upper surface of the roof, it is not preferable in terms of appearance.

  The present invention has been made in view of the above-mentioned problems of the prior art, and the first object is to be less susceptible to solvent welding, adhesion, or heat fusion performed at the time of waterproof sheet construction, and to reduce the power generation function of solar cells. A solar cell-integrated waterproof sheet material that can be prevented and a construction method thereof are provided. A second object is to provide a normal waterproofing treatment without newly applying a waterproof treatment to a connection portion drawn from the solar cell. It is providing the solar cell integrated waterproof sheet | seat material which can be constructed | assembled efficiently, and its construction method similarly to the waterproof sheet construction method.

  In order to achieve the above object, the present invention is summarized as follows.

  [1] A thin-film amorphous solar cell is hermetically embedded in an intermediate resin layer in a waterproof sheet formed by sequentially laminating a base material sheet layer made of a synthetic resin, an intermediate resin layer, and a surface resin layer. A solar cell-integrated waterproof sheet material, wherein an outer peripheral edge portion made of the waterproof sheet is formed in a manner of projecting to the outside of an embedded region of the solar cell. Wood.

  [2] The solar cell-integrated waterproof sheet material according to [1], wherein an overhang length of the outer peripheral edge portion is 40 mm or more.

  [3] The solar cell-integrated waterproof sheet material according to item 1 or 2, wherein the output lead wire from the solar cell is drawn from the back surface side of the base sheet layer.

  [4] The solar cell integrated waterproof according to any one of the preceding items 1 to 3, wherein the output lead wire from the solar cell is drawn from the back surface side of the outer peripheral edge portion of the base sheet layer. Sheet material.

  [5] A method for constructing a solar cell-integrated waterproof sheet material on a housing of a building, wherein a belt-like sheet joining member is fixed to a required location on the housing with a fixture, and any one of the preceding items 1 to 4 A plurality of parallel arrangements on the sheet joining member in a state in which the outer peripheral edge of the solar cell-integrated waterproof sheet material described in 1 is opposed to the outer peripheral edge of the adjacent solar cell-integrated waterproof sheet material without being wrapped. Then, in a state where the output lead wire from the solar cell is accommodated below the solar cell-integrated waterproof sheet material, the required portion between the outer peripheral edge portion and the sheet joining member is joined by solvent welding, adhesion, or thermal fusion. A construction method for a solar cell-integrated waterproof sheet material.

  [6] A method of constructing a solar cell-integrated waterproof sheet material on a housing of a building, and fixing a sheet joining member having a substantially concave and convex cross section in which concave portions are joined to each other at necessary locations on the housing. The state where the outer peripheral edge of the solar cell integrated waterproof sheet material according to any one of the preceding items 1 to 4 is opposed to the outer peripheral edge of the adjacent solar cell integrated waterproof sheet material without being wrapped. In the state where a plurality of parallel arrangements are made on the sheet joining member, and the output conducting wire from the solar cell is housed in the recess, the required portion between the outer peripheral edge portion and the sheet joining member is solvent-welded and bonded. Or the construction method of the solar cell integrated waterproof sheet | seat material characterized by joining by heat sealing | fusion.

  According to the invention of [1], a thin-film amorphous solar cell is embedded in the intermediate resin layer of the waterproof sheet in a sealed manner and protrudes to the outside of the embedded region. Because the peripheral edge is formed, the outer peripheral edge protects the solar cell from the solvent, adhesive, or heat when solvent welding, bonding, or heat fusion is applied to the front or back surface of the outer peripheral edge. Thus, the solar cell can be prevented from being deteriorated or thermally deteriorated, and waterproofing can be performed without causing a decrease in the power generation function of the solar cell.

  According to the invention of [2], since the overhang length of the outer peripheral edge in the preceding item 1 is 40 mm or more, it is possible to particularly prevent the solar cell from being altered or thermally deteriorated by a solvent, an adhesive, or heat. It is possible to more reliably prevent the power generation function of the solar cell from being lowered.

  According to the invention of [3] or [4], since the output conductor of the solar cell is drawn from the back surface side of the base sheet layer or the back surface side of the outer peripheral edge portion, The connection is made under the waterproof sheet material before the outer peripheral edge portions of the solar cell integrated waterproof sheet materials are joined. That is, even if the connection portion is not particularly waterproofed, the normal waterproof sheet is used. As with the construction method, construction can be performed efficiently.

  According to the invention of [5], the belt-shaped sheet joining member is fixed to a required location on the housing, and the outer peripheral edge of the solar cell integrated waterproof sheet is adjacent to the outer peripheral edge of the adjacent solar cell waterproof sheet. In a state of being opposed to each other without being wrapped, a plurality of parallel arrangements are made on the sheet joining member, and the output peripheral wire from the solar cell is accommodated under the solar cell-integrated waterproof sheet material, and the outer peripheral edge portion and the sheet Since the required part with the joining member is joined by solvent welding, adhesion, or heat fusion, waterproofing is not required at the connection part, and the construction can be carried out efficiently in the same manner as a normal waterproof sheet construction method. At the same time, since the output conductor from the solar cell is not exposed even after the construction, the appearance is excellent.

  According to the invention of [6], the belt-like sheet joining member in the preceding item 5 is replaced with a sheet joining member having a substantially uneven cross section in which the concave portions are joined at intervals, and an output from the solar cell is provided in the concave portion. Since the lead wire is accommodated, the output lead wire can be connected more easily, and particularly efficiently.

  FIG. 1 shows a perspective view of one embodiment of a solar cell-integrated waterproof sheet material 1 according to the present invention, and FIG. 2 shows a cross-sectional view thereof.

  A solar cell integrated waterproof sheet material 1 according to the present invention is a waterproof sheet in which a base sheet layer 2a made of a synthetic resin having a predetermined shape and area, an intermediate resin layer 2b, and a surface resin layer 2c are sequentially laminated. In the intermediate resin layer 2b of the sheet 2, a thin-film amorphous solar cell 3 having a shape with a smaller outline when viewed from the upper surface than the waterproof sheet 2 is embedded in a sealed manner at a position substantially at the center of the upper surface. In addition, an outer peripheral edge portion 4 made of the waterproof sheet 2 is formed so as to protrude outward from the embedding region C. Moreover, the output conducting wire 5 of the solar cell 3 is drawn from the opposite side of the solar cell 3 from the back surface side of the base sheet layer 2a through the intermediate resin layer 2b and the base sheet layer 2a.

  The synthetic resin constituting the base sheet layer 2a according to the present invention is not limited as long as it is a synthetic resin. For example, heat such as polyvinyl chloride resin, polypropylene resin, polyethylene resin, ethylene vinyl acetate copolymer, etc. Examples thereof include thermoplastic elastomers such as plastic resins, ethylene-propylene rubber, and chlorosulfonated polyethylene. This base sheet layer 2a is formed by molding a synthetic resin into a sheet shape by a conventional sheet forming method, and the thickness is not particularly limited. ~ 3 mm is preferred. In addition to the single-layer sheet shape, the base sheet layer 2 also includes a multi-layer sheet shape in which a plurality of synthetic resins are laminated and a layer in which a reinforcing layer such as a polyester resin net is interposed. Is possible.

  The intermediate resin layer 2b according to the present invention serves to seal and protect the solar cell 3, and also serves as an adhesive layer interposed between the base sheet layer 2 and the surface resin layer 2c. An ethylene vinyl acetate copolymer is particularly applied as a resin constituting the resin, but silicone, polyvinyl butyral (PVB), an epoxy resin, or a polyester resin is also applicable.

  The surface resin layer 2c according to the present invention plays a role of further protecting the solar cell 3, and from the viewpoint of preventing contamination from scratches and dust, and from the viewpoint of imparting weather resistance, a fluororesin is particularly applied. However, polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), polyimide, and the like are also applicable.

  In the waterproof sheet 2 of the present invention, the base sheet layer 2a, the intermediate resin layer 2b, and the surface resin layer 2c are sequentially stacked and integrated.

  The solar cell 3 according to the present invention is a thin-film amorphous solar cell in which metal electrodes are provided above and below a flexible amorphous silicon element.

  In order to obtain the solar cell integrated waterproof sheet material 1, the solar cell 3 is preferably embedded in advance in the resin constituting the intermediate resin layer 2b. As the embedding method, for example, a film made of a resin constituting the intermediate resin layer 2b having a larger outline than the solar cell 3 is sandwiched between the upper and lower sides of the solar cell 3, and the film is laminated or hot-pressed. A method of stacking and integrating is mentioned.

  The base sheet layer 2a made of a synthetic resin, the intermediate resin layer 2b in which the solar cell 3 is embedded, and the surface resin layer 2c are superimposed on each other and integrated to form a solar cell integrated waterproof according to the present invention. Sheet material 1 is obtained. In order to improve the laminating properties, an adhesive such as a hot melt adhesive can be interposed between these constituent materials, and other dissimilar materials can be interposed.

  As an example of the method of laminating the above components, a method in which the solar cell 3 is thermally fused at a temperature at which the solar cell 3 is not thermally deteriorated, for example, at 200 ° C. or less, and an autoclave method is used. For example, a method of pressure degassing and pressure bonding may be used. On the other hand, as a method of not heating, a method in which a room temperature curable adhesive such as an epoxy-based adhesive is applied to the front and back surfaces of each layer and the respective constituent materials are pressure-bonded to each other can be employed.

  As the shape of the solar cell-integrated waterproof sheet material 1 according to the present invention, a rectangular shape as shown in FIG. 1 can be mentioned as a typical one. However, the shape is not limited to this shape. A polygonal shape such as a square shape or a long shape handled as a scroll is applicable. Especially, a long thing is preferable from the surface of construction efficiency on waterproof construction.

  As described above, the present invention is characterized in that the outer peripheral edge 4 made of the waterproof sheet 2 is formed outside the buried region C of the solar cell 3. By forming the outer peripheral edge 4, the solar cell 3 is isolated from the solvent, adhesive, or heat when solvent welding, adhesion, or heat fusion is performed on the front or back surface of the outer peripheral edge 4. It is assumed that the solar cell 3 can be protected and prevented from being altered or thermally deteriorated, and can be waterproofed without causing a decrease in the power generation function of the solar cell.

  The overhanging length of the outer peripheral edge 4 indicates the distance from the boundary A of the solar cell embedding region C to the protruding end B of the waterproof sheet 2 shown in FIG. The overhang length is not particularly limited in the setting, but is preferably 40 mm or more, more preferably 70 mm or more. That is, if it is 40 mm or more, the influence of the solvent, adhesive, or heat which the solar cell 3 receives can be prevented more reliably. On the contrary, if the thickness is less than 40 mm, the influence may not be completely eliminated during solvent welding, adhesion, or heat fusion.

  In this invention, as shown in FIG. 2, it is preferable that the output conducting wire 5 of the solar cell 3 in the solar cell integrated waterproof sheet material 1 is drawn out from the back surface side of the base material sheet layer 2a. Further, as shown in FIG. 3, as in the solar cell integrated waterproof sheet material 11 according to another embodiment of the present invention, the base sheet layer 2 a is particularly drawn from the back surface side of the outer peripheral edge 4. Is preferred.

  By taking such a configuration, as shown in FIGS. 5 and 7, when the solar cell integrated waterproof sheet materials 1 and 11 are constructed, before the outer peripheral edge portions 4 and 4 are joined to the sheet joining member 6. In addition, the connection of the output lead wire 5 from the solar cell is made under the solar cell integrated waterproof sheet material 1 and 11, and without applying a waterproof treatment to this connection part, Similarly, construction can be performed efficiently.

  Next, an example of the construction method of the solar cell-integrated waterproof sheet material 1 according to the present invention will be specifically described with reference to FIGS.

  FIG. 4 shows a top view of a waterproof construction surface obtained by employing the construction method of the solar cell integrated waterproof sheet material 1 of the present invention. FIG. 5 shows an enlarged cross-sectional view taken along line AA shown in FIG.

  First, as shown in FIG. 4, it is planned to arrange a plurality of solar cell-integrated waterproof sheet materials 1 in parallel in the vertical and horizontal directions on a housing 9 constituting a roof or the like, and the outer peripheral edge portion is on each side. The belt-shaped sheet joining members 6a are arranged so as to intersect vertically and horizontally so as to be in contact with the edges, and are fixed by a fixing tool 7 such as a screw. Further, at that time, if necessary, a sheet joining member having an L-shaped cross section disposed at the corner and a disk-shaped sheet joining member disposed in a dotted manner on the flat portion may be used in combination. Good.

  The belt-shaped sheet joining member 6a in this case is preferably made of a synthetic resin-coated steel plate coated with a synthetic resin on the surface or front and back, but is not limited thereto, and is made of a synthetic resin sheet. For example, the solar cell integrated waterproof sheet material 1 can be used without limitation as long as it can be bonded to the housing 9 by solvent welding, adhesion, or heat fusion.

  Next, the solar cell-integrated waterproof sheet material 1 is opposed to the belt-shaped sheet joining member 6a without wrapping the outer peripheral edge portion 4 with the outer peripheral edge portion 4 of the adjacent solar cell-integrated waterproof sheet material 1. In this state, a plurality are arranged in parallel. At this time, the output conducting wire 5 drawn out from the solar cell 3 is accommodated in the gap between the housing 9 and the solar cell integrated waterproof sheet material 1. The output conducting wire 5 is connected to a trunk line 15 previously disposed in parallel with the belt-like sheet joining member 6a.

  And the required part of the outer periphery part 4 and the strip | belt-shaped sheet | seat joining member 6a is joined by solvent welding, adhesion | attachment, or heat fusion, and waterproof construction is completed.

  From this, according to this construction method, the waterproof process in the connection part of the output conducting wire 5 becomes unnecessary, and it can construct the solar cell integrated waterproof sheet material 1 efficiently like the usual waterproof sheet construction method. In addition, since the output lead from the solar cell is not exposed even after the construction, the appearance is excellent.

  Next, an example of another construction method of the solar cell-integrated waterproof sheet material 11 according to the present invention will be specifically described with reference to FIGS.

  FIG. 6 shows a top view of a waterproof construction surface obtained by employing the construction method of the solar cell integrated waterproof sheet material 11 according to the present invention. The solar cell integrated waterproof sheet material 11 here is one in which the output lead wire 5 of the solar cell 3 is drawn from the back surface side of the outer peripheral edge portion 4 in the base sheet layer 2a.

  FIG. 7 shows an enlarged cross-sectional view taken along the line BB shown in FIG.

  First, as shown in FIG. 6, it is planned to arrange a plurality of solar cell-integrated waterproof sheet materials 1 in parallel in the vertical and horizontal directions on a housing 9 that constitutes a roof or the like. A plurality of rectangular foam heat insulating block members 8 having a predetermined thickness and size are disposed at corresponding positions with a gap. And as shown in FIG. 7, the sheet | seat joining member 6b of the substantially uneven | corrugated cross section which arrange | positioned the recessed parts 61b and 61b at intervals in the clearance gap between the foam heat insulation block materials 8 and 8 is arrange | positioned. A fixing tool 7 such as a screw is screwed into the bottom surface of the recess 61b of the sheet joining member 6b to be fixed. In addition, at this time, the back surface side of the convex part side edge 63b is in a state of holding down the side edge of the foam heat insulating block material 8.

  Here, the sheet joining member 6b having a substantially concavo-convex cross section has a concavo-convex shape obtained by bending a belt-like sheet joining member and connecting the recesses 61b and 61b with a space therebetween. As in 6a, a synthetic resin-coated steel plate coated with a synthetic resin on the surface or front and back is adopted as a preferred material. The sheet material 1 can be used without limitation as long as the sheet material 1 can be bonded by solvent welding, adhesion, or heat fusion and fixed on the housing 9. The recess 61b needs to be large enough to accommodate the output conductor 5 of the solar cell 3 and the terminal box attached thereto.

  Next, the solar cell integrated waterproof sheet material 1 is wrapped on the outer peripheral edge portion 4 of the adjacent solar cell integrated waterproof sheet material 1 on the sheet joining member 6b having a substantially uneven cross section. A plurality of them are arranged in parallel with each other facing each other. That is, in a state where the front end portions of the outer peripheral edge portion 4 face each other, they are disposed so as to substantially face each other on the convex center portion 62b of the sheet joining member 6b. At this time, the output conducting wire 5 drawn out from the solar cell 3 is accommodated in the recess 61b of the sheet joining member 6b having a substantially uneven cross section. This output conducting wire 5 is connected to the trunk line 15 previously disposed in the recess 61b.

  And the required part of the outer peripheral edge part 4 of the solar cell integrated waterproof sheet material 1 and the sheet joining member 6b having a substantially uneven cross section, that is, the required part of the convex side edge 63b and the convex central part 62b. Are joined by solvent welding, adhesion or heat fusion to complete waterproofing.

  From this, according to this construction method, the waterproof process in the connection part of the output conducting wire 5 becomes unnecessary, and it can construct the solar cell integrated waterproof sheet material 1 efficiently like the usual waterproof sheet construction method. In addition, since the output conductor from the solar cell can be accommodated in the concave portion of the sheet joining member having a substantially uneven cross section, the connection workability of the output conductor is further improved, and particularly efficient It will be possible. Moreover, since the output conducting wire from the solar cell is not exposed even after the construction, the appearance is excellent.

It is a perspective view which shows the solar cell integrated waterproof sheet material concerning this invention. It is sectional drawing which shows the solar cell integrated waterproof sheet material concerning this invention. It is sectional drawing which shows the solar cell integrated waterproof sheet material concerning other embodiment of this invention. It is a top view which shows the waterproof construction surface made | formed by the construction method of the solar cell integrated waterproof sheet material concerning this invention. It is an expanded sectional view of the AA line of FIG. It is a top view which shows the waterproof construction surface made | formed by employ | adopting the construction method of the solar cell integrated waterproof sheet material concerning other embodiment of this invention. It is an expanded sectional view of the BB line of FIG. It is sectional drawing which shows the junction part of the conventional solar cell integrated waterproof sheet material.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,11 Solar cell integrated waterproof sheet material 2 Waterproof sheet 2a Base sheet layer 2b Intermediate resin layer 2c Surface resin layer 3 Solar cell 4 Outer peripheral edge 5 Output lead 6 Sheet bonding member 6a Strip sheet bonding member 6b Uneven sheet Joining member 7 Fixing tool 8 Foam heat insulation block material 9 Housing A Boundary part B Protrusion part C Buried area

Claims (6)

  A solar cell in which a thin film amorphous solar cell is embedded in a sealed state in an intermediate resin layer in a waterproof sheet in which a base material sheet layer made of a synthetic resin, an intermediate resin layer, and a surface resin layer are sequentially laminated A solar cell-integrated waterproof sheet material, wherein an outer peripheral edge portion made of the waterproof sheet is formed in an integrated waterproof sheet material, in an aspect of projecting to the outside of an embedded region of the solar cell.   The overhang length of the outer peripheral edge is 40 mm or more, and the solar cell integrated waterproof sheet material according to claim 1.   The solar cell-integrated waterproof sheet material according to claim 1 or 2, wherein an output lead wire from the solar cell is drawn out from a back surface side of the base sheet layer.   The solar cell-integrated waterproof sheet according to any one of claims 1 to 3, wherein the output lead wire from the solar cell is drawn out from the back surface side of the outer peripheral edge portion of the base sheet layer. Wood.   A method for constructing a solar cell-integrated waterproof sheet material on a housing of a building, wherein a belt-like sheet joining member is fixed to a required location on the housing by a fixing tool, A plurality of the solar cell-integrated waterproof sheet materials described above are arranged in parallel on the sheet joining member in a state where the outer peripheral edge portions of the adjacent solar cell-integrated waterproof sheet materials face each other without wrapping. In a state where the output lead wire from the solar cell is accommodated below the solar cell-integrated waterproof sheet material, the required portion between the outer peripheral edge portion and the sheet joining member is joined by solvent welding, adhesion or thermal fusion. The construction method of the solar cell integrated waterproof sheet material characterized by this.   A method for constructing a solar cell-integrated waterproof sheet material on a building frame, and fixing a sheet bonding member having a substantially concave and convex cross-section with a recessed portion connected to a required location on the frame with a fixture. And the outer peripheral edge part of the solar cell integrated waterproof sheet material according to any one of claims 1 to 4 is opposed to the outer peripheral edge part of the adjacent solar cell integrated waterproof sheet material without being wrapped. A plurality of the sheet bonding members arranged in parallel on the sheet bonding member, in a state where the output conductor from the solar cell is accommodated in the recess, the required portion of the outer peripheral edge portion and the sheet bonding member is solvent-welded, bonded, Or the construction method of the solar cell integrated waterproof sheet | seat material characterized by joining by heat sealing | fusion.

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