Installation structure and construction method of solar power generation modules

Abstract

To provide a solar power generation module installation structure and installation method that allows for easy removal from the mounting base. [Solution] The installation structure 1 includes a base sheet 11 on which a solar power generation module 2 is attached to the front surface and which is laid in contact with the mounting base WP on the back surface. The base sheet 11 includes a peripheral portion located outside the outer edge of the solar power generation module 2, and the peripheral portion is fixed to the mounting base WP.

Description

Technical Field

[0001] The present invention relates to an installation structure for installing a photovoltaic module on an attachment base, and a construction method for applying the installation structure to the attachment base.

Background Art

[0002] The solar cell sheet described in Patent Document 1 includes a planar solar cell module and flaps disposed around the solar cell module.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The solar cell module (corresponding to the photovoltaic module of the present application) and the flaps described in Patent Document 1 are entirely adhered to an adherend (corresponding to the attachment base of the present application) by an adhesive. On the other hand, when the solar cell module does not operate properly, the work of removing the solar cell module entirely adhered to the adherend becomes complicated.

[0005] An object of the present invention is to provide an installation structure for a photovoltaic module that is easily removable from an attachment base, and a construction method.

Means for Solving the Problems

[0006] The characteristic configuration of the installation structure for a photovoltaic module according to the present invention is an installation structure for installing a photovoltaic module on a mounting base, comprising a base sheet to which the photovoltaic module is attached on the front surface and which is laid in contact with the mounting base on the back surface, wherein the base sheet has a peripheral portion located outside the outer edge of the photovoltaic module, and the peripheral portion is fixed to the mounting base.

[0007] According to the above-described configuration, the peripheral portion of the base sheet located outside the outer edge of the solar power generation module is fixed to the mounting base. In other words, the portion of the base sheet located inside the peripheral portion is not fixed to the mounting base. As a result, if the solar power generation module does not function properly, the module can be removed from the mounting base by removing the portion of the base sheet that is not fixed to the mounting base. Therefore, maintenance work such as replacing the solar power generation module becomes easier.

[0008] Another characteristic feature of the solar power generation module installation structure according to the present invention is that it is provided with an indicator attached to the base sheet or the mounting base, which indicates the portion of the surrounding area that is fixed to the mounting base.

[0009] According to the above feature configuration, the indicators allow workers to recognize which parts of the surrounding area are fixed to the mounting substrate. For example, it becomes easier for workers to recognize which parts of the surrounding area are to be coated with adhesive or solvent, which are to be fixed with anchor members, and which are to be heat-sealed. In other words, parts located inside the surrounding area are less likely to be fixed to the mounting substrate. As a result, if the solar power generation module does not function properly, the solar power generation module can be removed from the mounting substrate by removing the parts of the substrate sheet that are not fixed to the mounting substrate.

[0010] Another characteristic feature of the installation structure for the solar power generation module according to the present invention is that the indicator is positioned between the base sheet and the mounting base, and adjacent to the coating area to which the adhesive or solvent is applied, and is a damming member that blocks the adhesive or solvent.

[0011] According to the above-described configuration, the damming member prevents adhesive or solvent from penetrating inward beyond the coated area. As a result, the adhesive or solvent is less likely to penetrate the area inside the damming member of the substrate sheet than in conventional designs. Therefore, if the solar power generation module does not function properly, it becomes easier to remove the solar power generation module from the mounting substrate.

[0012] Another characteristic feature of the installation structure for the solar power generation module according to the present invention is that the damming member is an adhesive tape that adheres to the back surface of the base sheet and the mounting base.

[0013] According to the above-described configuration, the back surface of the base sheet is adhered to the mounting substrate by the damming member. As a result, the adhesive or solvent is less likely to penetrate the area inside the coated area of ​​the base sheet than in conventional methods.

[0014] Another characteristic feature of the installation structure for the solar power generation module according to the present invention is that the mounting base is a waterproof layer formed by laying a waterproof sheet containing polyvinyl chloride, and the base sheet contains polyvinyl chloride.

[0015] According to the above-described configuration, since the mounting substrate and substrate sheet contain polyvinyl chloride, the substrate sheet is easily fixed to the mounting substrate by heat welding or solvent welding.

[0016] Another characteristic feature of the installation structure for the solar power generation module according to the present invention is that the entire mounting surface of the solar power generation module is fixed to the front surface of the base sheet by adhesive.

[0017] According to the above-described configuration, the solar power generation module is fully adhered to the base sheet, making it difficult for the solar power generation module to peel off the base sheet.

[0018] Another characteristic feature of the installation structure for the photovoltaic power generation module according to the present invention is that the photovoltaic power generation module is a sheet-shaped photovoltaic power generation sheet having a power generation section.

[0019] According to the above-described configuration, the thickness of the solar power generation module itself becomes thinner than conventional modules. As a result, the height from the mounting base to the solar power generation module is reduced, making it less susceptible to the forces of strong winds acting on the solar power generation module.

[0020] The characteristic configuration of the solar power generation module installation method according to the present invention is an installation method for applying the above-described installation structure to the mounting base, which includes a laying step of laying the base sheet with the back surface of the base sheet in contact with the mounting base, a fixing step of fixing the peripheral portion of the base sheet to the mounting base, and a mounting step of attaching the solar power generation module to the front surface of the base sheet.

[0021] According to the above-described configuration, the peripheral portion of the base sheet located outside the outer edge of the solar power generation module is fixed to the mounting base. In other words, the portion of the base sheet located inside the peripheral portion is not fixed to the mounting base. As a result, if the solar power generation module does not function properly, the solar power generation module can be removed from the mounting base by removing the portion of the base sheet that is not fixed to the mounting base. Therefore, maintenance work such as replacing the solar power generation module becomes easier.

[0022] Another characteristic feature of the solar power generation module installation method according to the present invention is that it includes a removal step in which the portion of the surrounding area that is inside the coating area to which the adhesive or solvent is applied is removed from the mounting base together with the solar power generation module.

[0023] According to the above-described characteristic configuration, the photovoltaic module is removed from the mounting base by removing a portion of the base sheet where the adhesive or solvent is not applied, together with the photovoltaic module. Therefore, maintenance work such as replacement of the photovoltaic module becomes easier.

Brief Description of the Drawings

[0024] [Figure 1] It is a partially cutaway perspective cross-sectional view showing the installation structure of a photovoltaic module. [Figure 2] It is a plan view showing the installation structure of a photovoltaic module. [Figure 3] It is a longitudinal cross-sectional view taken along the A - A' arrow in FIG. 2. [Figure 4] It is a view showing the laying process. [Figure 5] It is a view showing the fixing process. [Figure 6] It is a view showing the rolling pressure process. [Figure 7] It is a view showing the mounting process. [Figure 8] It is a flowchart showing an example of a method for installing a photovoltaic sheet on a mounting base. [Figure 9] It is a view showing the removal process. [Figure 10] It is a view showing the process of laying a modified base sheet on the base sheet. [Figure 11] It is a view showing the process of attaching a photovoltaic module to the front surface of the modified base sheet. [Figure 12] It is a flowchart showing an example of a method for replacing a photovoltaic sheet.​​​​​​​​​​​​​ [Modes for carrying out the invention]

[0025] The following describes, with reference to the drawings, an installation structure for installing a solar power generation module according to the present invention onto a mounting base, and a method for applying the installation structure to the mounting base. In the following description, the direction of arrow "F" in the drawings is referred to as the "front," and the direction of arrow "R" in the drawings is referred to as the "back."

[0026] As shown in Figure 1, the solar power generation sheet 2 is fixed to the waterproof layer WP (an example of a mounting base) by the installation structure 1. As shown in Figures 1, 2, and 3, the installation structure 1 comprises a base sheet 11 to which the solar power generation sheet 2 is attached on its front surface 11a, and double-sided tape 12 attached to the back surface 11b of the base sheet 11.

[0027] [Solar power generation sheet] As shown in Figures 1, 2, and 3, the photovoltaic sheet 2 (corresponding to a photovoltaic module) has a power generation section 21 that generates electricity when sunlight is incident on it, and a peripheral section 22 that is located outside the power generation section 21 in a plan view. In this embodiment, the photovoltaic sheet 2 is sheet-shaped and flexible. Although not shown in the figures, the photovoltaic sheet 2 has a flexible base member on which the power generation section 21 and a surface protection sheet are laminated in that order from the back side. The photovoltaic sheet 2 also has output terminals and wiring to a battery. In this embodiment, the photovoltaic sheet 2 is rectangular in a plan view. However, it is not limited to this, and the photovoltaic sheet 2 may have other shapes, such as a circular or polygonal shape in a plan view.

[0028] The power generation unit 21 is equipped with a power generation cell that generates electricity when sunlight is incident on it. The power generation unit 21 is made of materials such as amorphous silicon or perovskite.

[0029] As shown in Figures 2 and 3, the peripheral portion 22 surrounds the power generation unit 21 in a plan view. The peripheral portion 22 does not contain power generation cells that generate electricity from incident sunlight. The peripheral portion 22 prevents water and other substances from entering the power generation unit 21 from the surrounding area.

[0030] [Waterproof layer] As shown in Figure 3, the waterproof layer WP is formed by laying a sheet-like waterproof sheet containing a synthetic polymer on the waterproof substrate GR. The synthetic polymer is one of the following, or a combination of two or more of these: vinyl chloride, ethylene vinyl acetate resin, vulcanized rubber (e.g., ethylene propylene rubber, butyl rubber, chlorosulfonated polyethylene), non-vulcanized rubber (e.g., butyl rubber, ethylene propylene rubber, chlorosulfonated polyethylene), thermoplastic elastomer (e.g., polyolefin), or acrylic resin.

[0031] In this embodiment, the waterproof sheet laid on the waterproof layer WP is a sheet-like material containing polyvinyl chloride. The waterproof sheet mainly consists of polyvinyl chloride and also contains plasticizers and the like. However, it is not limited to this, and the waterproof sheet may also have fibrous material.

[0032] As shown in Figure 1, the waterproofing substrate GR is a concrete roof structure. However, it is not limited to this; the waterproofing substrate GR may also consist of a corrugated metal roof with alternating peaks and valleys in a vertical cross-section, and insulation laid on top of the metal roof. Furthermore, the waterproofing substrate GR may take other forms. For example, the waterproofing substrate GR may be made of wood, or a structure combining metal and concrete. In addition, the waterproofing substrate GR may be a vertical surface such as a vertical wall, an inclined surface, or a curved surface such as a cylinder.

[0033] [Underlay sheet] The base sheet 11 is a sheet-like material having a synthetic polymer. The synthetic polymer is, for example, one of the following or a combination of two or more of these: vinyl chloride, ethylene vinyl acetate resin, vulcanized rubber (e.g., ethylene propylene rubber, butyl rubber, chlorosulfonated polyethylene), non-vulcanized rubber (e.g., butyl rubber, ethylene propylene rubber, chlorosulfonated polyethylene), thermoplastic elastomer (e.g., polyolefin), or acrylic resin.

[0034] As shown in Figures 1, 2, and 3, in this embodiment, the base sheet 11 is a sheet-like member containing polyvinyl chloride. The base sheet 11 is mainly made of polyvinyl chloride and also contains plasticizers and the like. In other words, the base sheet 11 is a polyvinyl chloride resin-based waterproof sheet. The thickness of the base sheet 11 is not particularly limited, but for example, it is about 1.3 mm to about 2.5 mm.

[0035] It is preferable that the synthetic polymer of the base sheet 11 and the synthetic polymer of the waterproof layer WP are of the same type or identical. Specifically, it is preferable that the synthetic polymer of the base sheet 11 and the synthetic polymer of the waterproof layer WP are polyvinyl chloride. This makes it easier for the base sheet 11 to be fixed to the waterproof layer WP by welding or heat fusion with solvent SL2.

[0036] As shown in Figure 2, in this embodiment, the base sheet 11 is rectangular in plan view. However, it is not limited to this, and the base sheet 11 may have other shapes, such as a circular or polygonal shape in plan view. The surface area of ​​the base sheet 11 is larger than the surface area of ​​the photovoltaic sheet 2. As shown in Figures 2 and 3, the base sheet 11 comprises a central portion 11C that overlaps with the photovoltaic sheet 2 in plan view, and a peripheral portion 11E located outside the outer edge 22E of the photovoltaic sheet 2.

[0037] The entire mounting surface of the solar power generation sheet 2 is fixed to the front surface 11a of the base sheet 11 with adhesive SL1. In addition, the back surface 11b of the base sheet 11 is laid in contact with the waterproof layer WP.

[0038] 〔double-sided tape〕 As shown in Figures 2 and 3, the double-sided tape 12 (corresponding to adhesive tape) is attached to the back surface 11b of the base sheet 11 such that its outer end is located outside the outer edge 22E of the solar power generation sheet 2 and inside the outer edge of the base sheet 11. In this embodiment, the strip-shaped double-sided tape 12 is positioned outside the solar power generation sheet 2 and surrounds the solar power generation sheet 2. The double-sided tape 12 adheres to the back surface 11b of the base sheet 11 and the waterproof layer WP.

[0039] As shown in Figures 2 and 3, solvent SL2 is applied to the coating area E, which is the area on the back surface 11b of the peripheral portion 11E that is outside the double-sided tape 12, and the coating area E is fixed to the waterproof layer WP. In other words, only the peripheral portion 11E of the base sheet 11 is fixed to the waterproof layer WP. To put it another way, the central portion 11C of the base sheet 11 is not fixed to the waterproof layer WP. The thickness of the double-sided tape 12 is preferably about 0.5 mm to about 5.0 mm. This creates a step between the area where the base sheet 11 and the double-sided tape 12 are laminated and the area where they are not laminated, so the position of the double-sided tape 12 can be determined from the front side of the base sheet 11. In other words, the position of the coating area E outside the double-sided tape 12 can be determined. To put it another way, the double-sided tape 12 is attached to the base sheet 11 or the waterproof layer WP and functions as an indicator M that shows the area of ​​the peripheral portion 11E that is fixed to the waterproof layer WP. In this embodiment, the index M functions to indicate the coating area E on which the solvent SL2 is applied, within the peripheral area 11E.

[0040] As shown in Figure 3, the double-sided tape 12 is positioned between the base sheet 11 and the waterproof layer WP, and adjacent to the coating area E on the inside, thereby bonding the base sheet 11 and the waterproof layer WP together. This prevents the solvent SL2 from penetrating inward beyond the double-sided tape 12. In other words, the double-sided tape 12 functions as a damming member D that blocks the solvent SL2.

[0041] [Method for attaching solar power generation sheets to the waterproof layer] Next, an example of a method (construction method) for installing the solar power generation sheet 2 on the waterproof layer WP will be explained based on the flowcharts shown in Figures 4 to 7 and 8. Note that the steps described below may be performed in any order, and multiple steps may be performed simultaneously, as long as there are no inconsistencies. In Figures 4 to 6, the solar power generation sheet 2 is not attached to the base sheet 11, and the position where the solar power generation sheet 2 is attached is indicated by a dashed line.

[0042] [1-1] Laying process The double-sided tape 12 is placed on the back surface 11b of the base sheet 11 in a continuous square shape when viewed from above (step S01). Next, as shown in Figure 4, the base sheet 11 is laid so that the back surface 11b of the base sheet 11 is in contact with the waterproof layer WP (step S02). As a result, the double-sided tape 12 that is adhered to the back surface 11b of the base sheet 11 adheres to the surface of the waterproof layer WP, so that the base sheet 11 is temporarily fixed to the waterproof layer WP by the double-sided tape 12. The method is not limited to this, however, the base sheet 11 may be laid on top of the waterproof layer WP with the double-sided tape 12 already positioned on the surface of the waterproof layer WP.

[0043] [1-2] Fixing process As shown in Figure 5, the peripheral portion 11E of the base sheet 11 is fixed to the waterproof layer WP (step S03). In this embodiment, the peripheral portion 11E of the base sheet 11 is fixed to the waterproof layer WP with solvent SL2. Specifically, the outer edge of the peripheral portion 11E is lifted and solvent SL2 is applied to the application area E. Next, the application area E is brought into contact with the surface of the waterproof layer WP to fix the peripheral portion 11E to the waterproof layer WP. More specifically, the back surface 11b of the base sheet 11 itself is dissolved by solvent SL2, and the peripheral portion 11E is fixed to the surface of the waterproof layer WP. In other words, the portion of the back surface 11b of the base sheet 11 inside the double-sided tape 12 is not fixed to the waterproof layer WP by solvent SL2. However, the peripheral portion 11E may also be fixed to the surface of the waterproof layer WP with an adhesive. Although not shown in the figures, the peripheral portion 11E may also be fixed to the waterproof layer WP with an anchor member or the like. Furthermore, by heating the back surface 11b of the base sheet 11 while it is in contact with the surface of the waterproof layer WP, the back surface 11b of the base sheet 11 itself and the adhesive layer formed on the back surface 11b may be melted, thereby fixing the back surface 11b to the surface of the waterproof layer WP.

[0044] [1-3] Compaction process As shown in Figure 6, the base sheet 11 is compacted from above using a roller or the like (step S04). This causes the base sheet 11 to adhere strongly to the waterproof layer WP due to the pressure. At this time, as shown in Figure 6, the solvent SL2 attempts to penetrate inward beyond the double-sided tape 12 (towards the solar power generation sheet 2 in a plan view) due to the pressure, but is blocked by the double-sided tape 12.

[0045] [1-4] Installation process As shown in Figure 7, the solar power generation sheet 2 is attached to the front surface 11a of the base sheet 11 (step S05). Specifically, the entire mounting surface of the solar power generation sheet 2 is in contact with the front surface 11a of the base sheet 11 and fixed to the front surface 11a of the base sheet 11 with adhesive SL1. Adhesive SL1 can be, for example, epoxy resin adhesive, acrylic resin adhesive, silicone resin adhesive, or rubber adhesive. Two or more of these adhesives may also be mixed. The installation process may be carried out at the construction site or in advance at a factory or other facility. Furthermore, the installation process may be carried out at the site before the laying process (step S01).

[0046] Next, the solar power generation sheet 2 is compacted using a roller or the like. This causes the solar power generation sheet 2 to adhere tightly to the base sheet 11 due to the pressure. However, to prevent damage to the surface of the solar power generation sheet 2, a protective sheet may be laid on the surface of the solar power generation sheet 2, and compaction may be performed using a roller or the like from above this protective sheet.

[0047] Through the above process, the solar power generation sheet 2 is installed on the waterproof layer WP by the installation structure 1.

[0048] If a problem occurs with the solar power generation sheet 2, it will be removed from the waterproof layer WP and replaced. Furthermore, the waterproof layer WP will undergo repair work at regular intervals to maintain its waterproofing function. During this process, the solar power generation sheet 2 will be removed from the waterproof layer WP. The removed solar power generation sheet 2 can be reused.

[0049] [How to replace solar power sheets] Next, an example of a method for replacing the solar power generation sheet 2 (installation method) will be explained based on the flowcharts shown in Figures 9 to 11 and 12. Note that the steps described below may be performed in any order, and multiple steps may be performed simultaneously, as long as there are no inconsistencies.

[0050] [2-1] Removal process As shown in Figure 9, the portion of the peripheral area 11E that is inside the coated area E is removed from the waterproof layer WP together with the solar power generation sheet 2 (step S11). Specifically, the portion of the peripheral area 11E that is inside the coated area E (inside the outer edge of the double-sided tape 12) is cut with a cutter or the like. Here, since the penetration of solvent SL2 is suppressed inside the outer edge of the double-sided tape 12 by the double-sided tape 12, the portion of the peripheral area 11E that is inside the outer edge of the double-sided tape 12 is easy to cut with a cutter or the like. A portion of the base sheet 11 that is fixed by solvent SL2 is left in the waterproof layer WP.

[0051] [2-2] Steps to lay the renovation base sheet on top of the base sheet. As shown in Figure 10, the repair base sheet 13 is laid with its back surface 13b in contact with the front surface 11a of the base sheet 11 (step S12). The repair base sheet 13 is laid on top of the base sheet 11 and the waterproof layer WP.

[0052] [2-3] Steps to fix the renovation base sheet to the base sheet. Step S13 involves joining the back surface 13b of the repair base sheet 13 to the front surface 11a of the remaining base sheet 11. Specifically, the back surface 13b of the repair base sheet 13 is heated while it is in contact with the front surface 11a of the base sheet 11. This melts the back surface 13b of the repair base sheet 13, thereby joining the repair base sheet 13 to the front surface 11a of the base sheet 11. However, the back surface 13b of the repair base sheet 13 may also be joined to the front surface 11a of the base sheet 11 by heating the back surface 13b, which melts the adhesive layer on the back surface 13b. Alternatively, the back surface 13b of the repair base sheet 13 may be joined to the front surface 11a of the base sheet 11 by an adhesive or solvent.

[0053] [2-4] Process of attaching solar power generation sheets to the renovation base sheet As shown in Figure 11, a new solar power generation sheet 2 is attached to the front surface 13a of the repair base sheet 13 (step S14). Specifically, with the mounting surface of the new solar power generation sheet 2 in contact with the front surface 13a of the repair base sheet 13, the new solar power generation sheet 2 is fixed to the front surface 13a of the repair base sheet 13 with adhesive SL1. The above process of attaching the solar power generation sheet 2 to the repair base sheet 13 may be performed at the construction site, or it may be performed in advance at a factory or other location before the removal process. Alternatively, this process may be performed at the site before step S12. The repair base sheet 13 has the same configuration as the base sheet 11. Note that double-sided tape 12 is not attached to the back surface 13b of the repair base sheet 13.

[0054] Next, the solar power generation sheet 2 is compacted from above using a roller or similar tool. This causes the solar power generation sheet 2 to adhere tightly to the renovation base sheet 13 due to the pressure.

[0055] Through the above process, the solar power generation sheet 2 is replaced.

[0056] [Second Embodiment] An installation structure for installing a solar power generation module according to a second embodiment of the present invention on a mounting base, and a method for applying the installation structure to the mounting base, will be described with reference to Figures 13 and 14. Components similar to those in the above-described embodiments are denoted by the same reference numerals, and detailed descriptions are omitted.

[0057] As shown in Figures 13 and 14, the base sheet 11 may be strip-shaped and arranged in a continuous square shape in plan view on the waterproof layer WP. In this embodiment, the portion of the base sheet 11 in the short direction that is inside the inner and outer center overlaps with the solar power generation sheet 2 as the central portion 11C.

[0058] As shown in Figure 13, multiple double-sided tapes 12 extend along the longitudinal direction of the base sheet 11, spaced apart from each other. This reduces the amount of solvent or adhesive that penetrates inward beyond the outer edges of the double-sided tapes 12. In this embodiment, the outer edge 22E of the solar power generation sheet 2 overlaps with the double-sided tapes 12 in a plan view.

[0059] In this embodiment, during the removal process (step S11), the portion of the peripheral portion 11E that overlaps with the double-sided tape 12 is cut with a cutter or the like. This suppresses damage to the surface of the waterproof layer WP by the cutter or the like when the peripheral portion 11E is removed, compared to the case where only the portion of the peripheral portion 11E that does not overlap with the double-sided tape 12 is cut.

[0060] In other words, during the removal process, the portion of the peripheral area 11E that is cut by a cutter or the like is any position outside the outer edge 22E of the solar power generation sheet 2 and inside the coated area E.

[0061] [Another embodiment] The present invention is not limited to the embodiments described above. For example, it may be configured as in the following alternative embodiments. In the alternative embodiments described below, components identical to those in the embodiments are denoted by the same numbers and reference numerals as in the embodiments described above.

[0062] [1] In the above embodiment, instead of the double-sided tape 12, the installation structure 1 may include, as a damming member D, an elastic body (e.g., synthetic rubber or thermoplastic elastomer) that fills the gap between the base sheet 11 and the waterproof layer WP, a foamed material (e.g., polyurethane foam or polyethylene foam), a metal member, or a projection that protrudes from the back surface 11b of the base sheet 11 to the back side. Alternatively, instead of the double-sided tape 12, the installation structure 1 may include, as a damming member D, an adhesive tape that adheres to either the back surface 11b of the base sheet 11 or the waterproof layer WP.

[0063] [2] In the above embodiment, instead of the double-sided tape 12, as shown in Figures 15 and 16, a line L drawn with paint or pigment may be applied to the back surface 11b of the base sheet 11 as the indicator M. This allows the worker to recognize that the area of ​​the back surface 11b outside the line L is the coating area E when the worker lifts the outer edge of the surrounding area 11E during the fixing process (step S03). Therefore, by applying the solvent SL2 to the appropriate location, it becomes difficult for the solvent SL2 to penetrate inside the line L.

[0064] Alternatively, the base sheet 11 may be a sheet-like material molded in two colors. In this embodiment, among the peripheral portion 11E, the color of the coated area E is different from the other parts, serving as indicator M. This allows the worker to identify the coated area E by color when lifting the outer edge of the peripheral portion 11E during the fixing process (step S03).

[0065] [3] In the above embodiment, the base sheet 11 is fixed to the surface of the waterproof layer WP. However, the base sheet 11 may also be fixed to the waterproof base GR. In this case, the waterproof base GR corresponds to the "mounting base" in the claims.

[0066] [4] In the above-described embodiment, the photovoltaic sheet 2 is a sheet-shaped member. However, the photovoltaic sheet 2 may take any other form as long as it generates electricity through the incidence of sunlight.

[0067] [5] In the above-described embodiment, the waterproof layer WP is formed by laying a waterproof sheet on the waterproof base GR. However, the waterproof layer WP may also be formed by applying asphalt waterproofing or coating waterproofing to the waterproof base GR.

[0068] [6] In the above-described embodiment, the "photovoltaic power generation module" in the claims corresponds to the power generation unit 21 and the peripheral unit 22. However, it is not limited to this, and the "photovoltaic power generation module" in the claims may correspond to the power generation unit 21 only. In this embodiment, in the above-described removal step (step S11), the portion of the base sheet 11 that overlaps with the peripheral unit 22 in a plan view may be cut with a cutter or the like.

[0069] [7] The configurations disclosed in the above-described embodiments (including other embodiments, the same applies hereinafter) can be applied in combination with configurations disclosed in other embodiments, insofar as they do not cause a contradiction, and the embodiments disclosed herein are illustrative, and the embodiments of the present invention are not limited thereto and can be modified as appropriate without departing from the object of the present invention. [Industrial applicability]

[0070] The present invention applies to an installation structure for installing a solar power generation module on a mounting base, and to a construction method for applying the installation structure to the mounting base. [Explanation of symbols]

[0071] 1: Installation structure 2: Solar power generation sheet 21: Power Generation Department 22E: Outer edge 11: Base sheet 11E: Peripheral area 11a: Front side 11b: Back side 12: Double-sided tape (indicator, damming material) E: Application area GR: Waterproofing base (mounting base) SL1: Adhesive SL2: Solvent WP: Waterproofing layer (mounting substrate)

Claims

1. An installation structure for installing solar power generation modules on a mounting base, The solar power generation module is attached to the front surface, and the base sheet is laid so that the back surface is in contact with the mounting base, The aforementioned base sheet includes a peripheral portion located outside the outer edge of the solar power generation module, An installation structure in which the aforementioned peripheral portion is fixed to the mounting base.

2. The installation structure according to claim 1, comprising an indicator attached to the base sheet or the mounting base, which indicates a portion of the surrounding area that is fixed to the mounting base.

3. The installation structure according to claim 2, wherein the indicator is positioned between the base sheet and the mounting base, and adjacent to the application area to which the adhesive or solvent is applied, and is a damming member that blocks the adhesive or solvent.

4. The installation structure according to claim 3, wherein the damming member is an adhesive tape that adheres to the back surface of the base sheet and the mounting base.

5. The aforementioned mounting base is a waterproof layer formed by laying a waterproof sheet containing polyvinyl chloride. The installation structure according to claim 1, wherein the base sheet contains polyvinyl chloride.

6. The installation structure according to claim 1, wherein the entire mounting surface of the solar power generation module is fixed to the front surface of the base sheet with an adhesive.

7. The installation structure according to claim 1, wherein the solar power generation module is a sheet-shaped solar power generation sheet having a power generation section.

8. A method for applying the installation structure described in any one of claims 1 to 7 to the mounting base, A laying step of laying the base sheet so that the back surface of the base sheet is in contact with the mounting base, A fixing step of fixing the peripheral portion of the base sheet to the mounting base, A construction method comprising the step of attaching the solar power generation module to the front surface of the base sheet.

9. The installation method according to claim 8, further comprising a removal step of removing the portion of the surrounding area that is inside the application area to which the adhesive or solvent is applied, together with the solar power generation module, from the mounting base.

Images