JP2007208213A - Power-generating system utilizing solar cell and mounting method for solar cell - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power-generating system utilizing solar cells which obtains a wind resistance and an earthquake resistance, at a low installation cost, by leveraging an outer wall or a roof slab. <P>SOLUTION: A film solar cell 2 is bonded to an ALC plate for outer wall or an ALC plate 50A for roof slab by using adhesive agents 27 and 45 with at least a sheet waterproof layer 40 between, to make a power-generating system utilizing the solar cell which has the film solar cell 2 as a power source. By leveraging the ALC plate for outer wall or the ALC plate 50A for roof slab which are utilized extensively, the film solar cell 2 is bonded by using the adhesive agent 27, thereby the power-generating system utilizing the solar cell which acquires a wind resistance and an earthquake resistance is provided at a low installation cost. By putting the sheet waterproof layer 40 between, waterproofing performance of the ALC plate for outer wall or the ALC plate 50A for roof slab is reinforced, and flexible characteristic of the sheet waterproof layer 40 absorbs distortion due to difference between the film solar cell 2 and the ALC plate 50A for roof slab due to difference of coefficient of thermal expansion. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a power generation system using a solar cell in which a solar cell is installed on an outer wall or a roof slab, and a method for mounting the solar cell.

So far, when installing solar cells on the outer wall or roof slab, panel-like polycrystalline silicon or single crystal silicon solar cells have been installed on a strong mounting base for wind resistance and earthquake resistance. Moreover, the space is provided in the panel back surface for the heat exhaust from a solar cell. Moreover, in order to raise electric power generation efficiency, the panel is angled (refer patent document 1). In addition, a solar cell module having a flexible part or a foldable part at least in part and having a flame resistant layer bonded to the non-light-receiving surface side of the photovoltaic element with a filler is attached to the roof or It has been proposed to arrange at the end of the outer wall (see Patent Document 2). In addition, the solar cell module is installed on the face plate of the honeycomb panel that is made by fixing the face plate to the aluminum honeycomb core, and has sufficient strength and rigidity to construct the roof, outer wall, etc., and no reinforcing material is required for installation. By attaching directly to a building or foundation structure such as a building, it is possible to configure roofs, outer walls, etc., and it is possible to increase the size and reduce the number of construction man-hours with a lightweight solar power generation function Has also been proposed (see Patent Document 3).
JP 2004-204535 (FIG. 1, abstract) JP 2001-308364 (FIG. 11, abstract) JP2003-314011 (FIG. 1, abstract)

  However, the above-mentioned strong and inclined gantry leads to an increase in installation cost. Moreover, in the proposal of the solar cell module having flexibility and flame resistance, there is no disclosure of a sticking configuration according to the situation of the wall surface and the roof surface. Naturally, the proposal of building materials with a solar power generation function does not consider the use of wall surfaces and roof surfaces. On the other hand, lightweight aerated concrete panel (ALC panel) building materials cured by high-temperature and high-pressure steam do not contain any fire resistance, heat insulation performance, light weight, and volatile organic compounds (VOC). As has been widely used.

  Accordingly, an object of the present invention is to obtain a power generation system using a solar cell that can obtain wind resistance and earthquake resistance by using an outer wall or a roof slab and has low installation costs.

  In order to solve the above-mentioned problems, in the present invention, a film-type solar cell is adhered to an ALC plate for an outer wall or an ALC plate for a roof slab through at least a sheet waterproof layer, and the film-type solar cell is powered. A power generation system using solar cells. By using the widely used ALC plate for the outer wall or the ALC plate for the roof slab, the film-type solar cell is adhered to the ALC plate for the outer wall or the roof slab with an adhesive. It can be a solar power generation system with excellent earthquake resistance and low installation costs. Furthermore, the waterproof performance of the ALC plate for the outer wall or the ALC plate for the roof slab is reinforced through the sheet waterproof layer, and the flexible property of the sheet waterproof layer is different between the film-type solar cell and the ALC plate due to the difference in thermal expansion coefficient. Absorbs distortion caused by differences.

  Further, a film-type solar cell is attached to an ALC plate for an outer wall or an ALC plate for a roof slab with an adhesive through at least a heat insulating material layer and a sheet waterproof layer, and the film-type solar cell is used as a power source. If the power generation system to be used is used, the widely used ALC plate for outer walls or ALC plates for roof slabs is used, and film-type solar cells are attached to the ALC plates for outer walls or roof slabs with an adhesive. Therefore, it is possible to obtain a power generation system using a solar cell having excellent wind resistance and earthquake resistance and low installation cost. Furthermore, through the heat insulating material layer and the sheet waterproof layer, the heat insulation performance and waterproof performance of the ALC plate for outer wall or the ALC plate for roof slab are reinforced, and the flexible characteristic of the sheet waterproof layer is a film due to the difference in thermal expansion coefficient. Absorbs strain caused by the difference between the solar cell and the ALC plate.

  Moreover, if it is set as the power generation system which used the commercial power supply as a power supply with the said film-type solar cell, it can respond to a bigger electric power and the range of utilization of a power generation system will spread.

  Moreover, if it is set as the electric power generation system which connected the storage battery via the charge / discharge controller to the said film-type solar cell, it can be set as a self-supporting stable power supply.

  And a solar cell mounting method in which a sheet waterproof layer is adhered to the outer wall ALC plate or the roof slab ALC plate with an adhesive, and a film solar cell is adhered to the sheet waterproof layer with an adhesive. Then, the waterproof performance of the ALC plate for the outer wall or the ALC plate for the roof slab is reinforced through the sheet waterproof layer, and the flexible characteristic of the sheet waterproof layer is a film-type solar cell and the ALC plate due to the difference in thermal expansion coefficient. In order to absorb the distortion due to the difference between the two, a solar cell mounting method with excellent adhesion strength can be obtained.

  In addition, a heat insulating material layer and a sheet waterproof layer are sequentially adhered with an adhesive on the outer wall ALC plate or the roof slab ALC plate, and a film-type solar cell is adhered on the sheet waterproof layer with an adhesive. With the battery mounting method, the heat insulation performance and waterproof performance of the ALC plate for outer walls or the ALC plate for roof slabs are reinforced through the heat insulating material layer and the sheet waterproof layer. Since the distortion due to the difference between the film-type solar cell and the ALC plate due to the difference in expansion coefficient is absorbed, the solar cell can be attached with a superior adhesion strength.

  According to the present invention, a widely used ALC plate for an outer wall or an ALC plate for a roof slab is used, and a film-type solar cell is adhered to the ALC plate for an outer wall or an ALC plate for a roof slab with an adhesive. Therefore, it is possible to obtain a power generation system using a solar cell having excellent wind resistance and earthquake resistance and low installation cost. Furthermore, the waterproof performance of the ALC plate for the outer wall or the ALC plate for the roof slab is reinforced by the sheet waterproof layer. Absorbs distortion caused by differences. In addition, it can contribute to global warming countermeasures by realizing an energy saving system.

  In addition, the waterproof performance of the ALC plate for the outer wall or the ALC plate for the roof slab is reinforced by the sheet waterproof layer, and the flexible property of the sheet waterproof layer is different between the film-type solar cell and the ALC plate due to the difference in thermal expansion coefficient. Since the strain due to the difference is absorbed, the solar cell can be attached with excellent adhesion strength.

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

  FIG. 1 shows a configuration diagram of a power generation system using a solar cell as an embodiment of the present invention. The connection box 3 that electrically connects the batteries 2, 2, and 2 together, and the connection box 3 are connected to the commercial power source 5 and the load 7 through the commercial interconnection point 6 via the 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 5 is supplemented during the daytime when sunlight is present, and the load 7 is driven by the power of the commercial power supply 5 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. The film type solar cell 2 here is one in which the upper and lower surfaces of the solar battery cell are covered with ethylene tetrafluoroethylene (ETFE) and the lower surface is covered with an adhesive such as ethylene bisol acetate (EVA). In addition, it's a good idea to have a laminate finish for appearance and protection.

  FIG. 3 is a longitudinal sectional view of a portion showing a state in which the above-described film-type solar cell is adhered and arranged on the ALC plate for roof slab.

  Here, a heat insulating material layer 44 made of urethane board is stuck on an ALC plate 50A for roof slab with an adhesive 46 such as ethylene bisol acetate (EVA). Next, the waterproof sheet 40 is stuck on the same adhesive 45. Here, the waterproof sheet 40 has a surface material 41 made of an EPDM sheet (ethylene-propylene-diene rubber sheet) and a back material 42 made of a polyester non-woven fabric and bonded together with an adhesive or the like. On the sheet waterproof layer 40, the film type solar cell 2 is attached with an adhesive 27.

  Thus, the widely used ALC plate 50A for roof slabs is used, and the film-type solar cell 2 is adhered on the roof ALC plate 50A with the adhesive 27, so that it has excellent wind resistance and earthquake resistance, and installation cost is high. It can be a power generation system using less solar cells. Furthermore, the heat insulation performance and waterproof performance of the ALC plate 50A for roof slabs are reinforced through the heat insulating material layer 44 and the sheet waterproof layer 40, and the flexible characteristic of the sheet waterproof layer 40 is a film shape due to the difference in thermal expansion coefficient. Absorbs strain due to the difference between the solar cell 2 and the roof slab ALC plate 50A.

  FIG. 4 is an external perspective view of a building showing an example in which the film type solar cell shown in FIG. 2 is disposed on an ALC plate for an outer wall. FIG. 5 is a longitudinal sectional view showing an arrangement of sticking on the ALC plate for the outer wall of the film type solar cell of the building of FIG.

  On the ALC plate 50B for the outer wall of the building 15, the film-type solar cell 2 is disposed by sticking. Although details of the sticking arrangement on the ALC plate 50B for the outer wall of the film-type solar cell 2 are not shown in FIGS. 4 and 5, details of the sticking arrangement are shown in FIG. 3 for the ALC plate for roof slab 50A. Instead of this, a configuration in which the waterproof sheet 40 and the heat insulating material layer 44 are merely provided as the outer wall ALC plate 50B can be employed. Furthermore, the heat insulating material layer 44 of FIG. 3 can be removed, and the sheet waterproof layer 40 in which the lower part of the film-type solar cell 2 is attached to the outer wall ALC plate 50B with the adhesive 45 can be used.

  Further, FIG. 6 shows another embodiment of a solar cell-based power generation system that uses a film-type solar cell as a self-supporting power source. This is a film-type solar cell 2, 2, 2 connected to a storage box 9 via a connection box 3 for electrically connecting them together and a charge / discharge controller 8, thereby providing a self-supporting stable power source. . An optical sensor 10 and a load 7 are further connected to the charge / discharge controller 8. Although it is desirable to provide the connection box 3, the connection box 3 can be omitted by connection with the charge / discharge controller 8.

  As in the above-described embodiment, the widely used ALC plate for the outer wall or the ALC plate for the roof slab is utilized, and the film solar cell is used as an adhesive on the ALC plate for the outer wall or the ALC plate for the roof slab. Therefore, it can be a solar power generation system with excellent wind and earthquake resistance and low installation costs. In addition, the waterproof performance of the ALC plate for the outer wall or the ALC plate for the roof slab is reinforced by the sheet waterproof layer. Absorbs distortion caused by differences. Furthermore, the heat insulation performance of the ALC plate for outer walls or the ALC plate for roof slabs can be reinforced through the heat insulating material layer.

  As described above, the solar cell power generation system and the solar cell mounting method according to the present invention can save the labor and cost of installation, realize a solar cell mounting method with excellent adhesion strength, and prevent global warming. The industrial applicability is great as a contribution to

It is a block diagram of the power generation system using a solar cell as one embodiment according to the present invention. It is an external view of an example of the film type solar cell sheet used by this invention. It is a longitudinal cross-sectional view of the part which shows the state which stuck and arranged the film type solar cell of FIG. 2 on the ALC plate for roof slabs. It is an external appearance perspective view of the building which shows the example which stuck and arrange | positioned the film type solar cell shown in FIG. 2 on the ALC plate for outer walls. It is a longitudinal cross-sectional view which shows the sticking arrangement | positioning on the ALC plate for outer walls of the film type solar cell of the building of FIG. It is a block diagram of the electric power generation system using a solar cell which connected the storage battery as another embodiment by this invention, and was used as the self-supporting power source.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Power generation system, 2 Film type solar cell, 3 Junction box, 4 Power conditioner, 5 Commercial power supply, 6 Commercial connection point, 7 Load, 8 Charge / discharge controller, 9 Storage battery, 10 Optical sensor, 15 Building, 22 Plastic film , 40 sheet waterproof layer, 41 surface material, 42 back surface material, 44 heat insulating material layer, 27, 45, 46 adhesive, 50A ALC plate for roof slab, 50B ALC plate for outer wall.

Claims (6)

  A film-type solar cell is attached to an outer wall ALC plate or a roof slab ALC plate with an adhesive via at least a sheet waterproof layer, and the film-type solar cell is used as a power source. Power generation system.   A film-type solar cell is attached to an ALC plate for an outer wall or an ALC plate for a roof slab with an adhesive through at least a heat insulating material layer and a sheet waterproof layer in order, and the film-type solar cell is used as a power source. Power generation system using solar cells.   The solar cell-based power generation system according to claim 1 or 2, wherein a commercial power source is used as a power source together with the film type solar cell.   The solar cell-based power generation system according to claim 1, wherein a storage battery is connected to the film solar cell via a charge / discharge controller.   Use of a solar cell characterized in that a sheet waterproof layer is adhered to an ALC plate for an outer wall or an ALC plate for a roof slab with an adhesive, and a film solar cell is adhered to the sheet waterproof layer with an adhesive. Installation method for solar power generation system. A heat insulating material layer and a sheet waterproof layer are sequentially attached with an adhesive on an ALC plate for an outer wall or an ALC plate for a roof slab, and a film type solar cell is attached on the sheet waterproof layer with an adhesive. A method for installing solar cells in a power generation system using solar cells.

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