JP2007243166A - Electric power generating system for roof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric power generating system for a roof which is strong-wind resistant, quake resistant and low installation-cost. <P>SOLUTION: A roof is constructed with roof tiles 90 being overlapped, each having a film solar battery 2 pasted in an area excluding an overlap section 91, 92, 93, wherein the film solar batteries 2 on the roof tiles 90 are electrically connected with a power conditioner. The electrical power generating system is strong-wind resistant, quake resistant, and low installation-cost and also allows effective utilization of roof tile surfaces, thereby providing contributions from the aspects of energy saving and countermeasures against global warming as well. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a roof power generation system that can be applied to a residential roof or the like.

  When considering photovoltaic power generation for homes, the installation location is optimal for the roof, but when installing solar cells on the roof for residential purposes, strong installation on a strong roofing material is required for strong winds and earthquake resistance measures. It has been necessary to install a pedestal and a panel type solar cell. For this reason, the labor and the cost of the facilities have become obstacles to the installation.

In order to reduce labor and equipment costs, a roof tile type solar cell is also disclosed (see Patent Document 1). On the other hand, there is a disclosure of a flexible solar cell module installed on a roof surface in order to reduce labor (see Patent Document 2).
Japanese Patent Laid-Open No. 10-061117 (FIG. 1, abstract) JP 2001-308364 A (summary, paragraph 0045, FIG. 3)

  However, in the technique of the above-mentioned Patent Document 1, it is necessary to prepare a roof tile for that purpose, which also causes an increase in cost. The technique disclosed in the latter patent document 2 requires a special solar cell module for providing the solar cell module with a roof tile function such as fire resistance, flame resistance and heat insulation.

  Accordingly, an object of the present invention is to obtain a roof power generation system having roof tile functions such as fire resistance, flame resistance, and heat insulation, which is strong against strong winds, has earthquake resistance, and has low installation cost.

  In order to solve the above-mentioned problems, in the present invention, a roof is formed by superimposing a roof tile on which a film-type solar cell is adhered, leaving an overlapping portion, and the film-type solar cell on the roof tile is used as a power conditioner. An electrically connected roof power generation system. This makes it possible to use a roof power generation system that utilizes the functions of roof tiles such as fire resistance, flame resistance, and heat insulation, and that is resistant to strong winds, is earthquake resistant, and has low installation costs. In addition, the roof tile surface can be used effectively, contributing to energy saving and global warming countermeasures.

  Further, if the power conditioner to which the film solar cell is electrically connected is a roof power generation system connected to a commercial interconnection point between a commercial power source and a load, energy saving can be achieved in conjunction with commercial power. .

  Moreover, the roof tile which stuck the film-type solar cell leaving the overlapping part is overlapped, the roof part is configured, and the film-type solar cell on the roof tile is connected to the storage battery via a power controller. If it is a power generation system, it can contribute to further energy saving and global warming countermeasures by using a storage battery.

  In addition, the heat insulating material part is wrapped with the metal plate part leaving the overlapping part, and the roof material laminated with the film type solar cell is superimposed on the metal plate part, and arranged on the roof base material to constitute the roof part. And the power generation system for roofs in which the film type solar cell is electrically connected to a power conditioner. As a result, it is possible to provide a power generation system for roofs that is strong against strong winds, has earthquake resistance, has excellent fire resistance, flame resistance, heat insulation, and the like, and has a much lower installation cost than ordinary roof tiles. In addition, the roof tile surface can be used effectively, contributing to energy saving and global warming countermeasures.

  In addition, the heat insulating material part is wrapped with the metal plate part leaving the overlapping part, and the roof material laminated with the film type solar cell is superimposed on the metal plate part, and arranged on the roof base material to constitute the roof part. And it is set as the electric power generation system for roofs which connected the said film-type solar cell to the storage battery via the power controller. As a result, it is strong against strong winds, has earthquake resistance, has excellent fire resistance, flame resistance, heat insulation, etc., and installation costs are almost the same as that of ordinary roof tiles. A roof power generation system that can contribute to global warming countermeasures.

  Further, a power generation system for a roof in which a positive electrode and a negative electrode take-out portion of the film-type solar cell are provided on the back surface of the metal plate portion, and a connection cable of the film-type solar cell is provided with a wiring groove portion provided in the heat insulating material portion. Then, wiring can be facilitated using the inside of the roof.

  Moreover, if the connection cable of the film type solar cell is a roof power generation system attached to the roof base material, the connection cable can be stably arranged.

  Moreover, if it is set as the electric power generation system for roofs where the horizontal direction for every said roof material is connected with the waterproof adjuster which has packing, the rainwater penetration | invasion prevention effect of the horizontal direction of a roof material will be acquired.

  According to the power generation system for a roof of the present invention described in claims 1 to 3 described above, a roof is formed by superimposing a roof tile to which a film-type solar cell is adhered, leaving an overlapping portion, and the roof tile is formed on the roof tile. By making the film-type solar cells electrically connected to the roof, the roof tile functions such as fire resistance, flame resistance, heat insulation, etc. can be used, and it is strong against strong winds and is earthquake-resistant. It can be a roof power generation system with little. In addition, the roof tile surface can be used effectively, contributing to energy saving and global warming countermeasures.

  Further, according to the roof power generation system of the present invention described in claims 4 to 8, the heat insulating material portion is wrapped with the metal plate portion leaving the overlapping portion, and the film type solar cell is laminated on the metal plate portion. By overlapping the roofing material and arranging it on the roof base material to form the roof part, and making the film-type solar cell electrically connected, it is strong against strong winds, has earthquake resistance, and fireproof It is possible to obtain a roof power generation system that has excellent properties, flame resistance, heat insulation, and the like, and that installation costs are not much different from ordinary roof tile roofing. In addition, the roof tile surface can be used effectively, contributing to energy saving and global warming countermeasures.

  The above-described roof power generation system according to the present invention can greatly reduce the labor and cost of installation compared to the case where a solar cell is specially installed as in the prior art, and greatly contributes to the future popularization of a solar power generation system using a solar cell. To fulfill.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a configuration diagram of a power generation system for a roof using a film-type solar cell as an embodiment according to the present invention. The power generation system 1 using a solar cell includes film-type solar cells 2, 2, and 2 and these films. The junction box 3 that electrically connects the solar cells 2, 2, and 2 together, and the junction box 3 are connected to a commercial power source 5 and a load 7 through a commercial interconnection point 6 via a power conditioner 4. Although it is desirable to provide the connection box 3, it is possible to omit the installation by connecting to the power conditioner 4.

  The power conditioner 4 supplies power to the load 7 through the commercial connection point 6 when the power generation voltage of the film solar cell 2 is high, and does not supply power to the commercial connection point 6 when the power generation voltage is low. Make adjustments.

  In this way, the power of the commercial power supply is supplemented during the daytime when sunlight is present, and the load is driven by the power of the commercial power supply at night when there is no sunlight.

  The film-type solar cell 2 is a flexible solar cell formed on a plastic film 22 and is lighter than a rigid solar cell, as shown in FIG.

  In this embodiment, as shown in a plan view in FIG. 3 and a cross-sectional view in FIG. 4, it is integrated with a steel plate for convenience of handling. That is, as shown in FIG. 3, it is set as the unit module of the film-type solar cell 2 which consists of a solar cell of 4 sheets series and 2 sheets parallel. As shown in FIGS. 3 and 4, the unit module of the film solar cell 2 is attached to a thin steel plate 25 with an adhesive 26, and the surface is coated with a coating material 27 to form a steel plate integrated unit module 20. Here, the steel plate 25 is a Galvalume steel plate coated with a 0.8 mm-thick fluororesin, and the adhesive 26 is ethylene bisol acetate (EVA). The coating material 27 is ethylene tetrafluoroethylene (ETFE). A conductive terminal 28 from the film type solar cell 2 extends to the terminal box 24 and the connector 23 on the back side of the steel plate 25.

  By using such a steel plate integrated unit module 20, the solar cell can be handled easily and has excellent weather resistance. Since the film-type solar cell (sheet) 2 is used, the steel plate and the deformation after laying can be endured.

  FIG. 5 is a plan view of the roof tile showing a state in which the steel sheet integrated unit module 20 of the film solar cell is attached to the roof tile 90. The unit module 20 is adhered to the roof tile 90 with an adhesive or the like, leaving the overlapping portions 91, 92, 93 when the roof is configured as the roof tile. In this example, a 0.642 m 2 film type solar cell 2 (or 20) is attached to a roof tile having a width of 1200 mm and a length of 635 mm. Two integrated unit modules 20 are attached. Electrical connection terminals T are formed at both ends of the film type solar cell 2 (or 20).

  FIG. 6 shows a partial cross-sectional view of the roof tile 90 in which film-type solar cells are adhered and arranged. The roof tile 90 is formed with modified asphalt roofings 96 and 97 which are waterproof sheets using modified asphalt with a polyester nonwoven fabric 95 impregnated with modified asphalt interposed therebetween. An adhesive layer 98 is formed on the lower surface of the modified asphalt roofing 97, and a release paper 99 to be peeled off when the adhesive layer 98 is adhered adheres to the adhesive layer 98. On the modified asphalt roofing 96, the steel sheet integrated unit module 20 of the film-type solar cell or the film-type solar cell (unit module) 2 is stuck with an adhesive leaving an overlapping portion.

  FIG. 7 is a plan view showing a column arrangement state of the roof structure of the roof tile on which the film-type solar cells are adhered and arranged, and FIG. 8 is a side view of a part extracted and viewed from the side. The roof tiles 90 are stacked one after another on the overlapping portion 91 from the bottom to the top of the roof, and fixed on the roof plate 80 by a conventional method.

  Thereafter, the terminals from the unit modules 20 of the film type solar cells of each roof tile 90 are connected in a column as shown in FIG.

  FIG. 9 is a perspective view showing the configuration of the entire roof, in which three columns in the state of FIG. 7 are arranged in the horizontal direction here. The horizontal overlapping portions 92 and 93 are also overlapped from the left to the right in the drawing.

  In this embodiment, an example in which the steel sheet integrated unit module 20 of the film type solar cell is used because it is easy to handle has been shown. However, in another embodiment, the solar cell is not a steel plate integrated unit module. It may be desirable to use a film-type solar cell unit module in which the upper and lower surfaces of the cell are covered with ethylene tetrafluoroethylene (ETFE) and the lower surface is covered with an adhesive such as ethylene bisol acetate (EVA).

  In consideration of both unit modules, the expression “film solar cell” is used in the description of the present application except when necessary for the description of the above-described embodiment.

  Next, another embodiment of the present invention will be further described with reference to the drawings.

  FIG. 10: shows the block diagram of the self-supporting roof power generation system by the film type solar cell as other embodiment by this invention, and the self-supporting type roof power generation system 1 by a solar cell is a film type solar cell sheet. 2, 2, and 2, and the connection box 3 that electrically connects the film-type solar battery sheets 2, 2, and 2 together, and the connection box 3 includes an optical sensor 105 and a storage battery 106 via a charge / discharge controller 104. And connected to a load 7. Although it is desirable to provide the connection box 3, the connection box 3 can be omitted by connection with the charge / discharge controller 104.

  When the signal from the optical sensor 105 indicates that the optical sensor 105 is receiving light, the charge / discharge controller 104 stores the generated electricity of the solar cell from the connection box 3 in the storage battery 106. When the signal from the optical sensor 105 indicates that the optical sensor 105 is not receiving light, electricity from the storage battery 106 is supplied to the load 7.

  In this way, the battery 106 stores electricity during the daytime when sunlight is present, and supplies electricity from the storage battery 106 to the load at night when there is no sunlight. That is, a self-supporting roof power generation system using solar cells that charge the storage battery 106 with sunlight in the daytime and discharge from the storage battery 106 at night is configured.

  Incidentally, it is obvious that the circuit configuration shown in FIG. 10 can be used in place of the circuit configuration of FIG. 1 of the embodiment shown in FIGS. 1 can be used in place of the circuit configuration of FIG. 10 in the other embodiments shown in FIGS.

FIG. 11 is a perspective view showing a configuration of a roof portion as another embodiment according to the present invention.
12 is an enlarged longitudinal sectional view showing a structural unit of the roof portion shown in FIG. 13 is a cross-sectional view taken along line XX of the lateral joint of the roof portion shown in FIG.

  11 and 12 show a roof material (a structural unit of the roof portion) 111 that forms the roof portion 110 (particularly FIG. 11). The roof material (the structural unit of the roof portion) 111 is formed by wrapping the heat insulating material portion 114 with the metal plate portion 112 except for the overlapping portion 115, and the film solar cell 2 is laminated on the metal plate portion 112 with the laminate portion 113 of the laminate material. It is formed by laminating (see particularly FIG. 12).

  As shown in FIG. 13, the lateral joint portion 120 of the roof material 111 is different on the left and right sides of the roof material 111. The lateral joint portion 120 is basically connected here by a waterproof adjuster having connecting plates 119 and 119 provided with packings 118 and 118 and a rising portion 119a for connection.

  In order to describe the lateral joint portion 120 in more detail, the roof material (the structural unit of the roof portion) 111 is referred to as a left roof material 111A and a right roof material 111B, as shown in FIGS. In the left roof material 111 </ b> A, a joint groove 114 a is formed in the heat insulating material portion 114 along the side surface direction of the roof material (a structural unit of the roof portion) 111. In this joint groove portion 114a, here, a metal housing portion 116 is housed. A pair of opposing connection plates 119, 119 having rising portions 119a that rise obliquely toward the tip, and packings 118, 118 disposed near the bases of the connection plates 119, 119, are the storage portions 116. Is housed. The connection plate 119 is fixed to the inner wall of the storage portion 116 by means of welding or the like, and is extended and attached.

  FIG. 13 is a cross-sectional view taken along the line XX, and shows the roof material 111A on the left side as a center, but the groove portion 114a, the connecting plate 119 and the packing 118 are also provided on the right side portion of the roof material 111B on the right side. The accommodated storage portion 116 is provided as long as it is not the roof material 111 constituting the end portion of the roof portion 110.

  Next, the assembly of the roof member 111 will be described with reference to FIGS. FIG. 14 is a cross-sectional view taken along the line XX during the assembly of the left roofing material 111A. FIG. 15 is a cross-sectional view taken along the line XX in a state where the assembly of the left roof material 111A is completed. 16 is a cross-sectional view taken along line XX of the end portion of the right roofing material 111B combined with the left roofing material 111A of FIG.

  A joint groove 114a is formed in the left roof material 111A, and a storage portion 116 to which connection plates 119 and 119 are attached, and packings 118 and 118 are stored in the groove. This state is shown in FIG. When the metal plate portion 112 is assembled, the connection plate 119 and the packing 118 are accommodated on the lower side of the protruding portion. This state is shown in FIG. The packing is sandwiched between the metal plate portion 112 and the connection plate 119 and prevents inundation of rainwater under the roof portion 110. In this example, the roof material 111 (the structural unit of the roof portion) is transported to the construction site in the state of FIG. 15 and assembled with the other roof material 111 at the construction site.

  The end portion of the right roofing material 111B is as shown in FIG. 16, and the assembly at the construction site is performed by connecting the connection plate 119 and the packing 118 accommodated in the joint groove 114a of the left roofing material 111A. By the metal plate part 112 protruding so as to cover, the hook-shaped tip folding part 112a holds the tip of the connection plate 119, and the connection plate 119 and the packing 118 are accommodated below.

  The fitting for covering the connection plate 119 and the packing 118 of the right roofing material 111B is performed by sliding the right roofing material 111B to the left and then sliding further to the right to form the metal plate 112 of the right roofing material 111B. The hook-shaped tip folding portion 112a is performed by capturing the tip of the rising portion 119a of the connection plate 119 and storing the connection plate 119 and the packing 118. As with the left roof material 111A, the packing is sandwiched between the metal plate portion 112 and the connection plate 119 and prevents inundation of rainwater or the like below the roof portion 110.

  As described above, the roof material (the structural unit of the roof portion) 111 is overlapped and disposed on the roof base material 130 to form the roof portion 110 (see FIG. 11). As described above, in the embodiment shown in FIGS. 10 to 16, the overlapping portions 115 of the roofing material (the structural unit of the roof portion) 111 are stacked, the horizontal joint portions 120 are coupled by the slide operation, and the deployment and extension are successively performed. The roof part 110 is constructed. In addition, the roof material 111 is fastened to the roof base material 130 with the overlapping portion 115 of the heat insulating material portion 114 by a ridge 131.

  In this embodiment, the positive and negative lead-out portions of the film-type solar cell 2 are provided on the back surface of the metal plate portion 112, and the connection cable 122 of the film-type solar cell 2 is provided in the heat insulating material portion 114 with the wiring groove portion 114b. The wiring is made easy by using the inside of the roof portion 110. Furthermore, the connection cable 122 for the film-type solar cell 2 is attached to the roof base material 130 via the waterproof connector 121, and the connection cable 122 is stably arranged.

  As described above, the power generation system for roofs using the film-type solar cell according to the present invention can greatly reduce the labor and cost of installation compared to the case where a solar cell is specially provided as in the past, and contributes to measures against global warming. As such, the industrial applicability is great, and it will greatly contribute to the spread of solar power generation systems for roofs in the future.

It is a block diagram of the electric power generation system using the film type solar cell as one embodiment by this invention. It is an external view of an example of the film type solar cell sheet used by this invention. It is a top view which shows an example of the unit module of the film type solar cell made into the integral type structure with the steel plate used by this invention. Sectional drawing along the centerline of the film type solar cell of FIG. 3 is shown. It is a top view of the roof tile which shows the state which stuck and arranged the film type solar cell shown in FIG. 3 on the roof tile. It is a longitudinal cross-section fragmentary view of the roof tile which stuck and arranged the film type solar cell of FIG. It is a top view which shows the arrangement | positioning state of the column of the roof structure by the roof tile which stuck and arrange | positioned the film type solar cell of FIG. It is the side view which took out a part of Drawing 7, and was seen from the side. It is a perspective view which shows the structure of the whole roof as an example by this invention. It is a block diagram of the electric power generation system using the film type solar cell as other embodiment by this invention. It is a perspective view which shows the structure of the roof part as other embodiment by this invention. FIG. 12 is an enlarged longitudinal sectional view showing the roofing material (the structural unit of the roof portion) shown in FIG. 11. It is a XX line cross section of the horizontal joint part of the roof part shown in FIG. It is XX sectional drawing during the assembly of the left roof material shown in FIG. FIG. 15 is a cross-sectional view taken along the line XX of FIG. 11 in a state where the assembly of the left roof material shown in FIG. 14 is completed. It is the XX sectional view taken on the line of FIG. 11 of the edge part of the right roof material combined with the left roof material of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Power generation system, 2 Film type solar cell, 3 Connection box, 4 Power conditioner, 5 Commercial power supply, 6 Commercial connection point, 7 Load, 20 Steel plate integrated unit module, 22 Plastic film, 23 Connector, 24 Terminal box, 25 Steel plate, 26 Adhesive, 27 Coat material, 28 Conductive terminal, 80 Roof plate, 90 Roof tile, 91, 92, 93 Overlay, 95 Polyester non-woven fabric, 96, 97 Modified asphalt roofing, 98 Adhesive layer, 99 Release paper, 104 Charge / Discharge Controller, 105 Photosensor, 106 Storage Battery, 110 Roof Part, 111 Roof Material (Structural Unit of Roof Part), 111A Left Roof Material, 111B Right Roof Material, 112 Metal Plate Part, 112a Tip Folding Part, 113 Laminate part, 114 Insulation part, 114a Groove part for joint Groove portion 114b wiring 115 overlap section 116 housing section, 118 packing, 119 connection plate, 119a rising portion, 120 horizontal joint, 121 waterproof connector, 122 connection cable, 130 roof bed material, 131 tack.

Claims (8)

  For roofing, characterized in that a roof tile is formed by superimposing a roof tile on which film-type solar cells are adhered, leaving an overlapped portion, and the film-type solar cell on the roof tile is electrically connected to a power conditioner. Power generation system.   2. The roof power generation system according to claim 1, wherein the power conditioner to which the film solar cell is electrically connected is connected to a commercial interconnection point between a commercial power source and a load.   The roof tile on which the film-type solar cells are pasted while leaving the overlapping portion is overlapped to form a roof portion, and the film-type solar cell on the roof tile is connected to a storage battery via a power controller. Power generation system for roof.   Wrapping the heat insulating material part with the metal plate part leaving the overlapping part, superimposing the roof material laminated with the film type solar cell on the metal plate part, and arranging on the roof base material to constitute the roof part, A power generation system for a roof, wherein the film type solar cell is electrically connected to a power conditioner.   Wrapping the heat insulating material part with the metal plate part leaving the overlapping part, superimposing the roof material laminated with the film type solar cell on the metal plate part, and arranging on the roof base material to constitute the roof part, A power generation system for a roof, wherein the film-type solar cell is connected to a storage battery via a power controller.   The film-type solar cell has a positive electrode and a negative electrode take-out portion provided on the back surface of the metal plate portion, and the connection cable for the film-type solar cell is provided with a wiring groove in the heat insulating material portion. The roof power generation system according to Item 4 or 5.   The roof power generation system according to claim 6, wherein a connection cable of the film solar cell is attached to the roof base material.   The roof power generation system according to claim 4 or 5, wherein a lateral direction of each roof material is connected by a waterproof adjuster having a packing.

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