Fixture, solar power generation device fixing structure, crimping tool, solar power generation device fixing method, fixture removal method

Abstract

To provide a fixture to be used for fixing, to a fixing target, a solar power generation device bent along the fixing target and enables the solar power generation device to be easily removed from the state in which the solar power generation device is fixed with the fixture.SOLUTION: A fixture 3 in the present invention features a two-leg shape and comprises: a pair of pinch parts 60A, 60B that fixes a solar power generation device 2 to a fixing target 51 by pinching bent parts 52 of the solar power generation device 2 bent along the fixing target 51; and a connection part 61 that connects the pair of pinch parts 60A, 60B. The connection part 61 is formed with an easily-deformable part 68. The fixture 3 can cause the connection part 61 to deform along the easily-deformable part 68 upon receiving an external force that compresses or expands the connection part 61 in a direction where the pinch parts 60A, 60B in the pair face each other.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a fastener for fastening a photovoltaic power generation device, a fastening structure for a photovoltaic power generation device, a crimping tool used in the work of fastening a photovoltaic power generation device to a fastening object with a fastener and in the work of removing the fastener from a photovoltaic power generation device, a fastening method for fastening the photovoltaic power generation device to a fastening object with a fastener using a crimping tool, and a method for removing the fastener from a photovoltaic power generation device using a crimping tool. [Background technology]

[0002] Conventionally, photovoltaic power generation devices that generate electricity from incident sunlight have been used, but a technology for fixing a photovoltaic power generation device to a fixed object in a state where the photovoltaic power generation device is folded along the fixed object has not yet been established. Patent Document 1 discloses a technology for fixing a shading sheet to a convex portion called a seam of a folded-plate roof. In Patent Document 1, the shading sheet is fixed to the convex portion by clamping the folded portion of the shading sheet that is folded along the convex portion with fixing metal fittings. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-40150 A Summary of the Invention [Problem to be solved by the invention]

[0004] The shading sheet fixed in Patent Document 1 does not normally need to be removed for maintenance, etc. In contrast, a solar power generation device needs to be removed from its fixed object at appropriate times for electrical maintenance, replacement, etc. Therefore, a particular issue of solar power generation devices is that a technology for fixing a solar power generation device that makes it easy to remove the solar power generation device from its fixed object is required.

[0005] The present invention has been made in consideration of the above matters, and its object is to provide a fixing device for fixing a solar power generation device to a fixing object in a state in which the solar power generation device is bent along the fixing object, and which can be easily removed from the solar power generation device when the solar power generation device has been fixed with the fixing device, and a fixing structure for a solar power generation device that includes the fixing device and the solar power generation device.

[0006] Another object of the present invention is to provide a crimping tool that can be used both to fix a solar power generation device to a fixing object using the fixing tool, and to remove the fixing tool from the solar power generation device after the solar power generation device has been fixed to the fixing object using the fixing tool, thereby reducing the number of tools required to perform both of the above tasks.

[0007] Another object of the present invention is to provide a method for fixing a photovoltaic power generation device, which uses the above-mentioned crimping tool to reliably fix the photovoltaic power generation device to a fixing object with the above-mentioned fixing tool.

[0008] Another object of the present invention is to provide a method for removing a fastener from a solar power generation device using the above-mentioned crimping tool when the solar power generation device has been fixed to a fixing object by the fastener, which method allows the fastener to be removed from the solar power generation device without damaging the solar power generation device. [Means for solving the problem]

[0009] To achieve the above object, the present invention includes the following subject matter.

[0010] Item 1. A fixture for fixing a solar power generation device to a fixing object in a state in which the solar power generation device is bent along the fixing object, wherein the fixing portion is bifurcated and has a pair of clamping portions that clamp the bent portion of the solar power generation device bent along the fixing object to fix the solar power generation device to the fixing object, and a connecting portion that connects the pair of clamping portions; The connecting portion has an easily deformable portion formed therein, A fixing device that can cause deformation of the connecting portion along the easily deformable portion by applying an external force to the fixing device that compresses or stretches the connecting portion in the direction in which the pair of clamping portions face each other.

[0011] Item 2. The fixture according to Item 1, wherein the easily deformable portion is formed at the boundary between the two branches of the fixture.

[0012] Item 3. A fixing device for fixing a solar power generation device to a fixing object in a state in which the solar power generation device is bent along the fixing object, wherein the fixing portion is bifurcated and has a pair of clamping portions that clamp the bent portion of the solar power generation device bent along the fixing object to fix the solar power generation device to the fixing object, and a connecting portion that connects the pair of clamping portions; The fastener, wherein the connecting portion has a thin portion that is thinner than the average thickness of the fastener, or a through hole that penetrates the connecting portion in the thickness direction.

[0013] Item 4. The fixture according to Item 3, wherein the thin-walled portion or the through-hole is formed at the boundary between the two branches of the fixture.

[0014] Item 5. A solar power generation device and a fixture according to any one of Items 1 to 4, A fixing structure for a solar power generation device in which the solar power generation device is fixed to the fixing object by clamping the bent portion of the solar power generation device bent along the fixing object between the pair of clamping portions.

[0015] Item 6. The fixing structure for a photovoltaic power generation device according to Item 5, wherein the photovoltaic power generation device is fixed to the fixing object with a gap between the bent portion and the connecting portion.

[0016] Item 7. The fixing structure for a photovoltaic power generating device according to Item 5 or 6, further comprising a packing formed from an elastic material and covering the bent portion, wherein the bent portion and the packing are sandwiched between the pair of clamping portions, thereby fixing the photovoltaic power generating device to the fixing target.

[0017] Item 8. A crimping tool used in the work of fixing a photovoltaic power generation device to a fixing object using the fixing device according to item 3 or 4, and in the work of removing the fixing device from the photovoltaic power generation device in a state in which the photovoltaic power generation device has been fixed to the fixing object using the fixing device, a pair of rod-shaped or plate-shaped tilting members; a rod-shaped or plate-shaped connecting member; One end of the connecting member is connected to an intermediate position of one of the tilting members via a first hinge, and the other end of the connecting member is connected to an intermediate position of the other tilting member via a second hinge, so that the one tilting member can tilt around the first hinge as an axis, and the other tilting member can tilt around the second hinge as an axis, A crimping tool that can align the connecting member with the connecting portion and create a gap between the connecting portion and the connecting member when the fixing device is positioned between one side area of ​​the first hinge on one tilting member and one side area of ​​the second hinge on the other tilting member.

[0018] Item 9. A fixing method for fixing the solar power generation device to the fixing object using the fixing tool according to item 8, a covering step of covering the bent portion of the solar power generation device bent along the fixing target with the fixing tool so that the bent portion is inserted into the space between the pair of clamping parts; an arrangement step of arranging the crimping tool so that the fixing tool is located between the one side area of ​​the one tilting member and the one side area of ​​the other tilting member and the connecting member is along the connecting portion; a fixing step of tilting the pair of tilting members so that one side ranges of the pair of tilting members approach each other, and pressing the pair of clamping portions with the pair of tilting members to crimp the fixing device, thereby clamping the bent portion between the pair of clamping portions and fixing the solar power generation device to the fixing object.

[0019] Item 10. A method for removing the fixing tool from the photovoltaic power generation device in a state in which the photovoltaic power generation device is fixed to the fixing object by the fixing tool, using the caulking tool according to item 8, The solar power generation device fixed to the fixing object by the fixing tool is in a state where a bent portion of the solar power generation device bent along the fixing object is sandwiched between the pair of clamping portions of the fixing tool, The method for removing the fixing device includes: an arrangement step of arranging the crimping tool so that the fixing tool is located between one side regions of the pair of tilting members and a gap is provided between the connecting portion and the connecting member; a deformation process in which the pair of tilting members are tilted so that one-side ranges of the pair of tilting members approach each other, and the pair of clamping portions are pressed by the pair of tilting members, thereby causing deformation along the thin-walled portion or the through hole in the connecting portion; and a removing step of removing the fastener from the bent portion while the deformation occurs in the connecting portion. [Effects of the Invention]

[0020] According to the fixture and fixing structure of the present invention, when the photovoltaic power generation device is fixed to a fixing object by the fixture, the fixture can be easily removed from the photovoltaic power generation device.

[0021] The crimping tool of the present invention can be used both to fix a solar power generation device to a fixing object using the fixing tool, and to remove the fixing tool from a state in which the solar power generation device has been fixed to the fixing object using the fixing tool, thereby reducing the number of tools required to perform both of the above tasks.

[0022] According to the method for fixing a photovoltaic power generation device of the present invention, the photovoltaic power generation device can be reliably fixed to a fixing object using the above-mentioned fixing tool.

[0023] According to the method for removing a fastener of the present invention, it is possible to remove the fastener from the solar power generation device without causing damage to the solar power generation device. [Brief explanation of the drawings]

[0024] [Figure 1] FIG. 1 is a cross-sectional view showing a fixing structure for a solar power generation device according to an embodiment of the present invention. [Figure 2] Fig. 2(A) is a cross-sectional view showing the solar power generation device in a cut state, Fig. 2(B) is an enlarged view of part a in Fig. 2(A), and Fig. 2(C) is a cross-sectional view showing the power generation unit cut along line AA in Fig. 2(A). [Figure 3] FIG. 3 is an enlarged view showing the area A in FIG. [Figure 4] Figure 4 is a schematic diagram showing the process of using a crimping tool to fix a solar power generation device to a fixing object with a fixing device. Figure 4(A) shows the state in which the crimping tool is positioned so that the connecting member of the crimping tool is aligned with the connecting portion of the fixing device, and Figure 4(B) shows the state in which the fixing device has been crimped with the crimping tool to fix the solar power generation device to the fixing object. [Figure 5] Figure 5 is a cross-sectional view showing the process of removing a fixture from sunlight using a crimping tool. Figure 5(A) shows the state in which the crimping tool is positioned so that there is a gap between the connecting member of the crimping tool and the connecting portion of the fixture, and Figure 5(B) shows the state in which the thin-walled portion of the fixture is deformed by pressing a pair of clamping portions of the fixture with a pair of tilting members of the crimping tool. [Figure 6] FIG. 6 is a cross-sectional view showing a fixing structure for a solar power generation device according to a modified example of the present invention. [Figure 7] FIG. 7 is an enlarged plan view of the area A in FIG. [Figure 8] FIG. 8 is a cross-sectional view showing a fixing structure for a solar power generation device according to a modified example of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0025] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Fig. 1 is a cross-sectional view showing a fixing structure 1 for a solar power generation device 2 according to an embodiment of the present invention.

[0026] A fixing structure 1 according to an embodiment of the present invention includes a solar power generation device 2, a fixing device 3, and a packing 4. In the fixing structure 1, a folded portion 52 of the solar power generation device 2 that is folded along the "convex portion 51 of the folded roof 50" and the packing 4 that covers the folded portion 52 are sandwiched between a pair of clamping portions 60A, 60B of the fixing device 3, whereby the solar power generation device 2 is fixed to the "convex portion 51 of the folded roof 50" that is the fixing target.

[0027] The folded roof 50 is made up of a plurality of metal plates 54 arranged side by side. In the folded roof 50, side edge portions 54a, 54b of two adjacent metal plates 54A, 54B are bent upward, and the side edge portion 54a of one metal plate 54A is wrapped around the outside of the side edge portion 54b of the other metal plate 54B, so that the side edges 54a, 54b form the above-mentioned protrusion 51, connecting the two adjacent metal plates 54A, 54B.

[0028] The packing 4 is a sheet material made of an elastic material and is arranged to cover the bent portion 52 of the solar power generation device 2. Examples of elastic materials that can be used to form the packing 4 include polyvinyl chloride (PVC), chlorinated polyvinyl chloride (CPVC), polyvinyl fluoride (PVF), ethylene propylene diene terpolymer (EPDM), natural rubber (NR), chloroprene rubber (CR), nitrile rubber (NBR), Creseed, butyl rubber (IIR), urethane rubber (U), silicone rubber, fluororubber (FKM), styrene butadiene rubber (SBR), glass fiber reinforced thermoplastic resin (FRTP), glass fiber reinforced plastic (GRP), glass fiber reinforced thermoplastic resin (GRTP), and thermoplastic elastomer (TPE).

[0029] (Solar power generation device 2) Fig. 2(A) is a cross-sectional view showing a state in which the solar power generation device 2 is cut. Fig. 2(B) is an enlarged view of part a in Fig. 2(A). Fig. 2(C) is a cross-sectional view showing a state in which the power generation unit 10 is cut along line AA in Fig. 2(A).

[0030] The solar power generation device 2 has a power generation section 10 and a sealant 11 disposed between a barrier sheet 5 and a back sheet 6, and the sealant 11 is filled around the power generation section 10. A sealing edge material 12 is provided on the outer periphery of the solar power generation device 2 to seal between the outer periphery of the barrier sheet 5 and the outer periphery of the back sheet 6. The solar power generation device 2 generates electricity in the power generation section 10 when light irradiated onto the outer surface 7 of the barrier sheet 5 is incident on the power generation section 10.

[0031] The solar power generation device 2 has a sheet shape. In this specification, "sheet shape" refers to a shape in which the thickness of the object is 10% or less of the maximum length between the outer edges in a planar view. For example, if the shape in a planar view is rectangular, the "maximum length between the outer edges in a planar view" refers to the length of the diagonal. Also, for example, if the shape in a planar view is circular, the "maximum length between the outer edges in a planar view" refers to the length of the diameter. In this specification, "sheet shape" also includes membrane, foil, film, etc.

[0032] The solar power generation device 2 is formed in a generally rectangular shape when viewed from above. However, the present invention does not particularly limit the shape of the solar power generation device 2, and the solar power generation device 2 may be, for example, a generally circular shape when viewed from above, an elliptical shape when viewed from above, a polygonal shape when viewed from above, or the like.

[0033] The solar power generation device 2 has flexibility (the property of allowing an object to bend). In the present invention, the solar power generation device 2 having flexibility means that the solar power generation device 2 has a bending strength of 10 MPa or more, or a bending modulus of elasticity of 100 MPa or more. The bending strength of the solar power generation device 2 is more preferably 20 MPa or more, and more preferably 50 MPa or more. The bending strength of the solar power generation device 2 is preferably 200 MPa or less, more preferably 150 MPa or less, and more preferably 50 MPa or less. The bending modulus of elasticity of the solar power generation device 2 is more preferably 500 MPa or more. The bending modulus of elasticity of the solar power generation device 2 is preferably 10,000 MPa or less, and more preferably 5,000 MPa or less. When evaluating the flexibility of the solar power generation device 2 by bending strength, the bending modulus does not have to be within the above range. When evaluating the flexibility of the solar power generation device 2 by bending modulus of elasticity, the bending strength does not have to be within the above range. The bending strength and bending modulus of the solar power generation device 2 are measured in accordance with JIS K 7171. The bending radius of the solar power generation device 2 is preferably 10 cm or less. The bending radius of the solar power generation device 2 is measured using an R caliper (radius measuring device) or the like.

[0034] (Back seat 6) The backsheet 6 has a barrier property against water vapor and a protective property against external forces. The backsheet 6 may be translucent, but is not necessarily translucent. As used herein, "translucent" means that the light transmittance is greater than 15% with respect to the peak wavelength of light before incidence. Examples of materials for the backsheet 6 include synthetic resins such as thermoplastic resins, thermosetting resins, general-purpose plastics, engineering plastics, and vinyl resins (e.g., polyvinyl chloride), natural resins, rubber, metals, carbon, and pulp.

[0035] The modulus of longitudinal elasticity of the back sheet 6 is preferably 2400 MPa or more, more preferably 3000 MPa or more. The modulus of longitudinal elasticity of the back sheet 6 is preferably 4200 MPa or less, more preferably 3100 MPa or less. Examples of materials for the back sheet 6 include synthetic resins such as thermoplastic resins, thermosetting resins, general-purpose plastics, engineering plastics, and vinyl resins (e.g., polyvinyl chloride). In addition to synthetic resins, materials for the back sheet 6 may also include natural resins, rubber, metals, carbon, and pulp.

[0036] The thickness of the back sheet 6 is preferably 50 μm or more, more preferably 100 μm or more, and is preferably 2000 μm or less, more preferably 1000 μm or less.

[0037] (Power Generation Unit 10) The power generation section 10 includes a power generation cell 20, which is a photoelectric conversion element that utilizes the photovoltaic effect. In this embodiment, the power generation section 10 is configured as a photoelectric conversion unit in which a plurality of power generation cells 20 are arranged in the surface direction of the solar power generation device 2 (for example, in the longitudinal direction or width direction of the solar power generation device 2). Note that the power generation section 10 may be configured with a single power generation cell 20.

[0038] (Power generating cell 20) The power generating cell 20 includes a light-transmitting substrate 21, a light-transmitting conductive layer 22, a power generating layer 23, and an electrode 24. The light-transmitting substrate 21, the light-transmitting conductive layer 22, the power generating layer 23, and the electrode 24 are laminated in this order along the direction from the barrier sheet 5 toward the back sheet 6. In other words, the light-transmitting substrate 21 is disposed opposite the barrier sheet 5, and the electrode 24 is disposed opposite the back sheet 6.

[0039] (Translucent base material 21) The translucent substrate 21 supports the translucent conductive layer 22, the power generation layer 23, and the electrode 24. The translucent substrate 21 is translucent. The translucency of the translucent substrate 21 is sufficient if the light transmittance is greater than 15% with respect to the peak wavelength of the light before incidence, but is preferably 50% or more, and more preferably 80% or more. In this specification, a light transmittance of 80% or more with respect to the peak wavelength of the light before incidence is defined as "transparent."

[0040] Examples of materials for the light-transmitting substrate 21 include inorganic materials, organic materials, and metal materials. Examples of inorganic materials include quartz glass and alkali-free glass. Examples of organic materials include plastics and polymer films such as polyethylene terephthalate (PET), polyethylene naphthalene (PEN), polyethylene, polyimide, polyamide, polyamideimide, liquid crystal polymer, and cycloolefin polymer. Examples of metal materials include stainless steel, aluminum, titanium, and silicon.

[0041] The thickness of the translucent substrate 21 is not particularly limited as long as it can support the translucent conductive layer 22, the power generation layer 23, and the electrodes 24, and may be, for example, 10 μm or more and 300 μm or less.

[0042] The light-transmitting base material 21 is a base material that is needed in the manufacturing process of the power generating cell 20, but is not an essential component. The light-transmitting base material 21 may be used, for example, only during the manufacturing process of the solar power generation device 2, or may be removed after or during manufacturing. When the light-transmitting base material 21 is removed, a base material that does not have light-transmitting properties may be used instead.

[0043] (Transparent conductive layer 22) The light-transmitting conductive layer 22 is a layer having electrical conductivity and functions as a cathode. The light-transmitting conductive layer 22 is light-transmitting. The light-transmitting conductive layer 22 is preferably transparent.

[0044] Examples of the transparent conductive layer 22 include transparent materials such as indium tin oxide (ITO), fluorine-doped tin oxide (FTO), NESA film, etc. The transparent conductive layer 22 is formed on the surface of the transparent substrate by, for example, sputtering, ion plating, plating, coating, etc.

[0045] Alternatively, the translucent conductive layer 22 may be configured to be translucent by forming a light-transmitting pattern using an opaque material. Examples of opaque materials include platinum, gold, silver, copper, aluminum, rhodium, indium, titanium, nickel, tin, zinc, and alloys containing these. Examples of light-transmitting patterns include a lattice pattern, a line pattern, a wavy line pattern, a honeycomb pattern, and a round hole pattern.

[0046] The thickness of the transparent conductive layer 22 is preferably, for example, 30 nm or more and 300 nm or less. When the transparent conductive layer 22 is 30 nm or more and 300 nm or less, good conductivity can be obtained while maintaining high flexibility.

[0047] (Power Generation Layer 23) The power generation layer 23 is a layer that causes photoelectric conversion when irradiated with light, and generates electrons and holes from excitons that are generated by absorbing light. As shown in Fig. 2(B), the power generation layer 23 includes a hole transport layer 30, a photoelectric conversion layer 31, and an electron transport layer 32. The hole transport layer 30, the photoelectric conversion layer 31, and the electron transport layer 32 are stacked in this order along the direction from the translucent conductive layer 22 toward the electrode 24.

[0048] (Hole transport layer 30) The hole transport layer 30 extracts holes generated in the photoelectric conversion layer 31 to the translucent conductive layer 22 and prevents electrons generated in the photoelectric conversion layer 31 from migrating to the translucent conductive layer 22. Examples of materials that can be used for the hole transport layer 30 include metal oxides. Examples of metal oxides include titanium oxide, molybdenum oxide, vanadium oxide, zinc oxide, nickel oxide, lithium oxide, calcium oxide, cesium oxide, and aluminum oxide. Other examples that can be used for the hole transport layer 30 include delafossite-type compound semiconductors (CuGaO), copper oxide, copper thiocyanate (CuSCN), vanadium pentoxide (VO), and graphene oxide. Alternatively, a p-type organic semiconductor or a p-type inorganic semiconductor can be used for the hole transport layer 30.

[0049] The thickness of the hole transport layer 30 is, for example, preferably 1 nm to 1000 nm, more preferably 10 nm to 500 nm, and even more preferably 10 nm to 50 nm. When the thickness of the hole transport layer 30 is 1 nm to 1000 nm, the transport of holes can be achieved.

[0050] (Photoelectric conversion layer 31) The photoelectric conversion layer 31 (photoactive layer) is a layer that photoelectrically converts absorbed light. The material of the photoelectric conversion layer 31 is not particularly limited as long as it can photoelectrically convert absorbed light, and examples thereof include amorphous silicon, perovskite, and non-silicon materials (semiconductor material CIGS). The photoelectric conversion layer 31 may also have a tandem stacked structure that combines these materials. The photoelectric conversion layer 31 that uses a non-silicon material uses the semiconductor material CIGS, which contains copper (Cu), indium (In), gallium (Ga), and selenium (Se), making it easy to reduce the thickness of the photoelectric conversion layer.

[0051] Below, as an example of a case where the power generation unit 10 contains an organic component, a case where a perovskite compound containing an organic component is contained in the photoelectric conversion layer 31 of the power generation unit 10 will be described. The photoelectric conversion layer 31 containing a perovskite compound has the advantage that the dependency of power generation efficiency on the angle of incident light (hereinafter sometimes referred to as incident angle dependency) is relatively low. This allows for higher power generation efficiency to be obtained in this embodiment.

[0052] A perovskite compound is a structure having a perovskite crystal structure or a crystal similar thereto. The perovskite crystal structure is expressed by the composition formula ABX3. In this composition formula, for example, A represents an organic cation, B represents a metal cation, and X represents a halogen anion. However, the A site, B site, and X site are not limited to these.

[0053] The organic group of the organic cation constituting the A site is not particularly limited, and examples thereof include alkylammonium derivatives, formamidinium derivatives, etc. The organic cation constituting the A site may be of one type or of two or more types.

[0054] The metal of the metal cation constituting the B site is not particularly limited, and examples thereof include Cu, Ni, Mn, Fe, Co, Pd, Ge, Sn, Pb, Eu, etc. The metal cation constituting the B site may be of one type or of two or more types.

[0055] The halogen of the halogen anion constituting the X site is not particularly limited, and examples thereof include F, Cl, Br, and I. The halogen anion constituting the X site may be of one type or of two or more types.

[0056] The thickness of the photoelectric conversion layer 31 is, for example, preferably 1 nm or more and 1,000,000 nm or less, more preferably 100 nm or more and 50,000 nm or less, and even more preferably 300 nm or more and 1,000 nm or less. When the thickness of the photoelectric conversion layer 31 is 1 nm or more and 1,000,000 nm or less, the photoelectric conversion efficiency is improved.

[0057] (Electron transport layer 32) The electron transport layer 32 extracts electrons generated in the photoelectric conversion layer 31 to the electrode 24, and prevents holes generated in the photoelectric conversion layer 31 from moving to the electrode 24. The electron transport layer 32 preferably contains, for example, either a halogen compound or a metal oxide.

[0058] Examples of halogen compounds include lithium halides (LiF, LiCl, LiBr, LiI) and sodium halides (NaF, NaCl, NaBr, NaI). Elements constituting metal oxides include titanium, molybdenum, vanadium, zinc, nickel, lithium, potassium, cesium, aluminum, niobium, tin, and barium. Furthermore, n-type organic semiconductors or n-type inorganic semiconductors can also be used as the material for the electron transport layer 32.

[0059] The thickness of the electron transport layer 32 is, for example, preferably 1 nm or more and 1000 nm or less, more preferably 10 nm or more and 500 nm or less, and even more preferably 10 nm or more and 50 nm or less. When the thickness of the electron transport layer 32 is 1 nm or more and 1000 nm or less, electron transport can be achieved.

[0060] (electrode 24) The electrode 24 is conductive and functions as an anode. The electrode 24 can extract electrons from the photoelectric conversion layer 31 in response to photoelectric conversion caused by the photoelectric conversion layer 31. The electrode 24 may be formed of a light-transmitting material or a light-opaque material. However, forming the electrode 24 from a light-opaque material can further improve the light-blocking properties of the solar power generation device 2 (i.e., can further prevent light from the side opposite the surface 7 from entering the power generation unit 10). Examples of materials for the electrode 24 include platinum, gold, silver, copper, aluminum, rhodium, indium, titanium, nickel, tin, zinc, and alloys containing any of these.

[0061] (Barrier Sheet 5) The barrier sheet 5 is translucent and, as described above, constitutes the surface 7 of the solar power generation device 2. The barrier sheet 5 is preferably transparent. The barrier sheet 5 has a barrier property against water vapor and a protective property against external forces.

[0062] The barrier sheet 5 is flexible. The material used for the barrier sheet 5 preferably has a modulus of longitudinal elasticity of 100 Pa or more and 10,000 MPa or less, and more preferably 1,000 MPa or more and 5,000 MPa or less. Specific examples of materials for the barrier sheet 5 include plastic films, vinyl films, etc.

[0063] The thickness of the barrier sheet 5 is preferably 50 μm or more, and more preferably 100 μm or more. The thickness of the barrier sheet 5 is preferably 2000 μm or less, and more preferably 1000 μm or less. When the thickness of the barrier sheet 5 is 50 μm or more and 2000 μm or less, the bending strength of the solar power generation device 2 can be easily set to 50 MPa or more and 150 MPa or less.

[0064] (Sealant 11) The sealant 11 prevents water from seeping into the power generation layer 23 from around the power generation layer 23. The sealant 11 is translucent and is preferably transparent. Note that the sealant 11 does not necessarily have to cover the entire power generation section 10. For example, if a portion of the power generation section 10 is exposed from the sealant 11, the exposed portion may be covered with a sealing edge material 12 or the like.

[0065] Examples of materials for the sealant 11 include ethylene vinyl acetate (EVA), polyolefin, butyl rubber, silicone resin, polyvinyl butyral, acrylic resin, polyisobutylene resin, SBS resin, SIBS resin, and epoxy resin.

[0066] The transverse elastic modulus of the sealant 11 is preferably 0.01 to 500 MPa, more preferably 0.05 to 250 MPa, and even more preferably 0.1 to 100 MPa. This allows the sealant 11 to deform in the planar direction in response to thermal expansion and contraction caused by the temperature difference between the back sheet 6 and the barrier sheet 5. This makes it possible to prevent the back sheet 6 and the barrier sheet 5 from peeling off from the sealant 11 due to shear stress caused by thermal expansion and contraction. The "transverse elastic modulus" referred to in this application is a value calculated from, for example, the longitudinal elastic modulus and Poisson's ratio obtained by a tensile test method.

[0067] From another perspective, the viscosity of sealant 11 can also be specified. The viscosity of sealant 11 is preferably 11,000 mPa·S or more and 700,000 mPa·S or less, more preferably 26,000 mPa·S or more and 450,000 mPa·S or less, and even more preferably 40,000 mPa·S or more and 110,000 mPa·S or less.

[0068] In this case, examples of the material for the sealant 11 include polyolefin, butyl rubber, silicone resin, polyvinyl butyral, acrylic resin, polyisobutylene resin, etc. The "viscosity" referred to in this specification is a value measured at an ambient temperature of 23°C in accordance with the rotational viscometer method of JIS Z8803.

[0069] The back sheet 6 and the barrier sheet 5 are bonded via the sealant 11, and the adhesive strength is preferably 0.1 N / 10 mm or more and 10 N / 10 mm or less in a peel test. In particular, when the solar power generation device 2 is installed in a bent state, the shear stress generated in the solar power generation device 2 becomes larger, so by adopting an adhesive strength in the above range in the peel test, peeling can be effectively suppressed for a long period of time. The peel test is performed in accordance with JIS Z 0237.

[0070] From the viewpoint of enhancing the effect of preventing peeling, the thickness of the sealant 11 is preferably 10 μm or more, more preferably 30 μm or more, and even more preferably 50 μm or more. On the other hand, the thickness of the sealant 11 is preferably 300 μm or less, more preferably 200 μm or less, and even more preferably 100 μm or less. By making the thickness of the sealant 11 10 μm or more, it is possible to ensure a sufficient escape margin for shear stress during thermal expansion and contraction. By making the thickness of the sealant 11 300 μm or less, it is possible to reduce the weight of the solar power generation device 2, thereby improving installation and workability.

[0071] The sealant 11 is not necessarily required and may not be provided. When the sealant 11 is not provided, the solar power generation device 2 may be configured such that, for example, only the power generation unit 10 is disposed between the barrier sheet 5 and the back sheet 6, and the barrier sheet 5 and the back sheet 6 are each adhered to the power generation unit 10.

[0072] (Sealing edge material 12) The sealing edge material 12 has a structure in which a first adhesive portion 40 adhered to the outer surface 7 of the barrier sheet 5, a sealing portion 41 that seals the space between the outer edge of the barrier sheet 5 and the outer edge of the back sheet 6, and a second adhesive portion 42 adhered to the outer surface 8 of the back sheet 6 are connected in sequence.

[0073] Examples of the material for the sealing edge material 12 include tape materials made of butyl rubber, silicone rubber, and the like.

[0074] The sealing edge material 12 is not necessarily required. For example, the edge of the barrier sheet 5 may be folded toward the back sheet 6, and the folded tip may be joined to the back sheet 6. Alternatively, the edge of the back sheet 6 may be folded toward the barrier sheet 5, and the folded tip may be joined to the barrier sheet 5. If this is done, the sealing edge material 12 will not be necessary.

[0075] (Action of solar power generation device 2) In the solar power generation device 2 described above, when light irradiating the outer surface 7 of the barrier sheet 5 enters the power generation section 10, the photoelectric conversion layer 31 of the power generation layer 23 absorbs the light and performs photoelectric conversion, generating electrons and holes in the photoelectric conversion layer 31. The electrons are extracted to the electrode 24 (anode) via the electron transport layer 32, and the holes are extracted to the translucent conductive layer 22 (cathode) via the hole transport layer 30, causing a current to flow from the translucent conductive layer 22 to the electrode 24 (i.e., power generation is performed).

[0076] In the photovoltaic conversion unit constituting the power generation section 10, an extension 24a is provided on the electrode 24 (anode) of each power generation cell 20 (FIG. 2(C)). The extension 24a of the electrode 24 extends toward the translucent conductive layer 22 (cathode). In two adjacent power generation cells 20, 20, the extension 24a of the electrode 24 of one cell 20 is joined to the translucent conductive layer 22 of the other cell 20. Due to this joining, while the solar power generation device 2 is irradiated with light, a current flows from the translucent conductive layer 22A at one end of the power generation section 10 (photovoltaic conversion unit) to the electrode 24A at the other end of the power generation section 10 (the current flow is indicated by an arrow in FIG. 2(C)). The current is extracted via a power distribution line (not shown).

[0077] By configuring the power generation section 10 from the above-described photoelectric conversion unit, the amount of electricity extracted from the power generation section 10 can be stabilized even if a malfunction occurs in some of the power generation cells 20.

[0078] Instead of providing the extension 24a on the electrode 24 (anode) of each power generating cell 20, an extension extending toward the electrode 24 (anode) may be provided on the translucent conductive layer 22 (cathode) of each power generating cell 20. In this case, between two adjacent power generating cells 20, 20, the extension of the translucent conductive layer 22 of one cell 20 is joined to the electrode 24 of the other cell 20. In this way, the same effect as above can be obtained.

[0079] Furthermore, when the power generation unit 10 is provided with a translucent base material 21, from the viewpoint of facilitating the manufacture of the power generation unit 10, it is preferable to support the translucent conductive layer 22, the power generation layer 23, and the electrode 24 of each power generation cell 20 on a common translucent base material 21, as shown in FIG. 2(C).

[0080] Furthermore, when the power generating section 10 is configured by one power generating cell 20, the current flowing from the electrode 24 to the translucent conductive layer 22 is extracted via a power distribution line.

[0081] The solar power generation device 2 may include a plurality of power generation units 10. In this case, the plurality of power generation units 10 are arranged in the surface direction of the solar power generation device 2 and are electrically connected in series or in parallel.

[0082] When the power generation units 10 are composed of photoelectric conversion units, in order to connect multiple power generation units 10 in series, the translucent conductive layer 22A at an end of one of two adjacent power generation units 10 is connected via a power distribution line to the electrode 24A at the end of the other power generation unit 10. When connecting multiple power generation units 10 in parallel, the translucent conductive layers 22A at the ends of two adjacent power generation units 10 are connected to each other via a power distribution line, and the electrodes 24A at the ends of the two adjacent power generation units 10 are connected to each other via a power distribution line.

[0083] Furthermore, when the power generation unit 10 is composed of one power generation cell 20, in order to connect a plurality of power generation units 10 in series, the translucent conductive layer 22 of one of two adjacent power generation units 10 is connected to the electrode 24 of the other power generation unit 10 via a power distribution line. When connecting a plurality of power generation units 10 in parallel, the translucent conductive layers 22 of two adjacent power generation units 10 are connected to each other and the electrodes 24 of the two adjacent power generation units 10 are connected to each other via a power distribution line.

[0084] Whether the power generation section 10 is composed of the above-mentioned photoelectric conversion unit or a single power generation cell 20, the distance between adjacent power generation sections 10, 10 may be greater than 0 mm, and is preferably 2 mm or more, more preferably 5 mm or more, more preferably 10 mm or more, and even more preferably 15 mm or more. The distance between adjacent power generation sections 10, 10 is preferably 100 mm or less, more preferably 50 mm or less, and even more preferably 20 mm or less.

[0085] In order to avoid damage to the power generation section 10, it is preferable that the power generation section 10 be provided in an area of ​​the solar power generation device 2 other than the bent section 52.

[0086] (fixture 3) 1, the fixing device 3 is bifurcated and has a pair of clamping portions 60A, 60B that sandwich the bent portion 52 and packing 4 of the solar power generation device 2, and a connecting portion 61 that connects the pair of clamping portions 60A, 60B. The fixing device 3 can fix the solar power generation device 2 to the protruding portion 51 (fixing target) of the folded roof 50 by sandwiching the bent portion 52 between the pair of clamping portions 60A, 60B. In the fixing structure 1 according to this embodiment, the bent portion 52 of the solar power generation device 2 is covered with the packing 4, so that the solar power generation device 2 is fixed to the protruding portion 51 (fixing target) with a gap equal to or greater than the thickness of the packing 4 between the bent portion 52 and the connecting portion 61 of the fixing device 3.

[0087] Linking portion 61 is a portion of fastener 3 that includes a bifurcated boundary 63 of fastener 3, and positions 64A, 64B of fastener 3 that form an angle when bent portion 52 and packing 4 are sandwiched between a pair of clamping portions 60A, 60B are defined as both ends of linking portion 61. In this embodiment, in the state before bent portion 52 and packing 4 are sandwiched between clamping portions 60A, 60B (the state shown by the two-dot chain line in FIG. 1 ), linking portion 61 has a shape that is bent at an obtuse angle at bifurcated boundary 63, and because fastener 3 has a shape that is bifurcated with line symmetry, the bifurcated boundary 63 of fastener 3 (hereinafter simply referred to as bifurcated boundary 63) is located on a plane that divides fastener 3 with line symmetry. In this embodiment, the above-mentioned corners forming the ends 64A, 64B of the connecting portion 61 are formed in advance in the fixing device 3, but the corners forming the ends 64A, 64B of the connecting portion 61 may also be created by clamping the bent portion 52 and the packing 4 with a pair of clamping portions 60A, 60B (in this case, the range of the connecting portion 61 can be identified by clamping the bent portion 52 and the packing 4 with a pair of clamping portions 60A, 60B to create the corners forming the ends 64A, 64B).

[0088] One clamping portion 60A extends from one end 64A of connecting portion 61 and is a portion that forms part of one leg of fixing device 3 (i.e., a portion of one leg of fixing device 3 that is further than end 64A). The other clamping portion 60B extends from the other end 64B of connecting portion 61 and is a portion that forms part of the other leg of fixing device 3 (i.e., a portion of the other leg of fixing device 3 that is further than end 64B).

[0089] In this embodiment, each of the clamping portions 60A and 60B has a side plate portion 66 extending from an end 64 of the connecting portion 61 and a claw portion 67 protruding from a tip of the side plate portion 66, with the claw portion 67 of the clamping portion 60A protruding toward the clamping portion 60B side (the right side in FIG. 1) and the claw portion 67 of the clamping portion 60B protruding toward the clamping portion 60A side (the left side in FIG. 1). In this embodiment, in a state before the clamping portions 60A and 60B clamp the bent portion 52 and the packing 4 (the state of the fixing device 3 shown by the two-dot chain line in FIG. 1), the side plate portions 66 of the clamping portions 60A and 60B are parallel to each other.

[0090] The shape of the fastener 3 is not limited to the above-described shape and may be bifurcated into various shapes depending on the shape of the bent portion 52, etc. For example, before the clamping portions 60A, 60B sandwich the bent portion 52 and the packing 4, the connecting portion 61 may be linear, arc-shaped, or bent at an acute angle at the bifurcated boundary 63. Furthermore, before the clamping portions 60A, 60B sandwich the bent portion 52 and the packing 4, the side plate portions 66, 66 of the clamping portions 60A, 60B do not have to be parallel. For example, the side plate portions 66, 66 may be inclined so as to move apart or approach each other toward the tip ends of the side plate portions 66, 66. Furthermore, in this embodiment, the clamping portions 60A, 60B each have a claw portion 67 as a portion of the fastener 3 that bites into the packing 4. However, the claw portions 67, 67 of the clamping portions 60A, 60B are not necessarily required and may be omitted.

[0091] Figure 3 is an enlarged view showing range A in Figure 1. Linking portion 61 is formed with easily deformable portion 68, and fixing device 3 can cause linking portion 61 to deform along easily deformable portion 68 by applying an external force that compresses or expands linking portion 61 in the direction in which the pair of clamping portions 60A, 60B face each other (corresponding to the left-right direction in Figures 1 and 3). The above-mentioned "deformation along easily deformable portion 68" includes compressive deformation, expansion deformation, and fracture of linking portion 61.

[0092] In this embodiment, the easily deformable portion 68 is formed in the connecting portion 61 as a thin portion having a thickness T thinner than the average thickness of the fastener 3 (hereinafter, the symbol "68" of the easily deformable portion 68 is used as the symbol for the thin portion). The average thickness of the fastener 3 is calculated by dividing the cross-sectional area of ​​the fastener 3 by the sum of the lengths of the line segments extending through the thickness center of the fastener 3. The sum of the lengths of the line segments extending through the thickness center of the fastener 3 is calculated by adding the lengths of the line segments extending through the thickness center of the connecting portion 61, the line segments extending through the thickness center of the clamping portion 60A, and the line segments extending through the thickness center of the clamping portion 60B. In this embodiment, the lengths of the line segments extending through the thickness centers of the clamping portions 60A and 60B are calculated by adding the lengths of the line segments extending through the thickness centers of the side plate portions 66 and the claw portions 67.

[0093] In this embodiment, as shown in Fig. 3, a recess 69 recessed in the thickness direction of the connecting portion 61 is formed in the connecting portion 61, thereby forming a thin-walled portion 68 (easily deformable portion) on the opposite side of the recess 69 in the thickness direction. The cross-sectional shape of the recess 69 is not particularly limited, and may be triangular as in the illustrated example, rectangular, or may have a shape with a rounded outline (such as a semicircular shape). From the viewpoint of preventing the recess 69 from expanding when the solar power generation device 2 is fixed by the fixing device 3, it is preferable that the recess 69 be provided on the side of the clamping portions 60A and 60B of the connecting portion 61 (the lower side in Figs. 1 and 3). Furthermore, from the viewpoint of ensuring that deformation along the thin-walled portion 68 (easily deformable portion) occurs in the connecting portion 61 when the fixing device 3 is removed from the solar power generation device 2, the thickness T (Figure 3) of the thin-walled portion 68 (easily deformable portion) is preferably 75% or less of the total thickness of the fixing device 3, more preferably 50% or less of the total thickness of the fixing device 3, and even more preferably 40% or less of the total thickness of the fixing device 3.

[0094] Furthermore, in order to ensure that deformation occurs along the thin-walled portion 68 (easily deformable portion) when the fixing device 3 is removed from the solar power generation device 2, it is preferable that the thin-walled portion 68 (easily deformable portion) be formed at the bifurcated boundary 63 of the fixing device 3, as in the illustrated example.

[0095] The number of thin-walled portions 68 (easily deformable portions) formed in the connecting portion 61 is arbitrary, and one or more thin-walled portions may be formed in the connecting portion 61. When one thin-walled portion 68 (easily deformable portion) is formed in the connecting portion 61, it is preferable that the one thin-walled portion 68 (easily deformable portion) extends over the entire length of the connecting portion 61 in the depth direction of the fixing device 3. When multiple thin-walled portions 68 (easily deformable portions) are formed in the connecting portion 61, it is preferable that the multiple thin-walled portions 68 (easily deformable portions) are arranged at intervals in the depth direction of the fixing device 3. The depth direction of the fixing device 3 mentioned above refers to the direction perpendicular to the cross section of the fixing device 3 (the front-rear direction in FIGS. 1 and 3 ).

[0096] The above-mentioned fastener 3 is made of metal or resin. Examples of metals that can be used to form the fastener 3 include stainless steel (Steel Use Stainless: SUS), steel, aluminum, brass, zinc alloy, iron-aluminum, stainless steel, and cast iron. Examples of resins that can be used to form the fastener 3 include synthetic resins such as acrylic, polycarbonate, thermoplastic resin, thermosetting resin, general-purpose plastic, engineering plastic, and vinyl resin (e.g., polyvinyl chloride), natural resin, and rubber. These materials may be used in combination. Note that, when using metal, a protective layer such as paint may be provided on the outside to improve corrosion resistance.

[0097] In this embodiment, the crimping tool 100 shown in Fig. 4 and Fig. 5 is used to fix the solar power generation device 2 to the protrusion 51 (fixing target) with the fixing tool 3, and to remove the fixing tool 3 from the solar power generation device 2 (i.e., to release the fixing of the solar power generation device 2 by the fixing tool 3) after the solar power generation device 2 has been fixed to the protrusion 51 (fixing target) with the fixing tool 3. The above-mentioned work of removing the fixing tool 3 is performed for electrical maintenance, replacement, etc. of the solar power generation device 2.

[0098] The crimping tool 100 includes a pair of rod- or plate-shaped tilting members 101A and 101B and a rod- or plate-shaped connecting member 102. One end of the connecting member 102 is connected to one tilting member 101A at an intermediate position via a first hinge 103, and the other end of the connecting member 102 is connected to the other tilting member 101B at an intermediate position via a second hinge 104, so that the one tilting member 101A can tilt about the first hinge 103 as an axis, and the other tilting member 101B can tilt about the second hinge 104 as an axis. Reference numeral 101a in FIGS. 4 and 5 indicates a region on one side of the first hinge 103 on one tilting member 101A, and reference numeral 101b in FIGS. 4 and 5 indicates a region on one side of the second hinge 104 on the other tilting member 101B. When the fastener 100 is positioned between one side area 101a of one tilting member 101A and one side area 101b of the other tilting member 101A, the fastener 100 can align the connecting member 102 with the connecting portion 61 or create a gap between the connecting portion 61 and the connecting member 102 (Figures 4(A), 4(A), 5(A), and 5(B) all show a state in which the fastener 3 is positioned between one side area 101a of the tilting member 101A and one side area 101b of the tilting member 101A, and Figures 4(A) and 4(B) show a state in which the connecting member 102 is aligned with the connecting portion 61, and Figures 5(A) and 5(B) show a state in which a gap is created between the connecting portion 61 and the connecting member 102).

[0099] The materials of the members constituting the crimping tool 100 (tilting members 101A and 101B, connecting member 102, first hinge 103, second hinge 104) are not particularly limited, but may be metals such as stainless steel (Steel Use Stainless: SUS), steel, aluminum, brass, zinc alloy, or iron, or synthetic resins such as acrylic, polycarbonate, thermoplastic resin, thermosetting resin, general-purpose plastic, engineering plastic, or vinyl resin (e.g., polyvinyl chloride), natural resin, or resin such as rubber. Here, the crimping tool 100 only needs to be equally hard or harder than the fixing tool 3, and the modulus of elasticity of the crimping tool is preferably 1.0 times or more, more preferably 1.1 times or more, and even more preferably 1.5 times or more, that of the fixing tool 3.

[0100] When fixing the solar power generation device 2 to the convex portion 51 (fixing target) of the folded roof 50 with the fixing device 3, first, a covering step is performed in which the bent portion 52 of the solar power generation device 2 bent along the bent portion 51 (fixing target) is covered with the packing 4, and the fixing device 3 is placed over the bent portion 52 covered with the packing 4 so that the bent portion 52 covered with the packing 4 is inserted into the space between the pair of clamping portions 60A, 60B. Note that from the viewpoint of being able to remove the fixing device 3 without damaging the solar power generation device 2, it is preferable that in the covering step, the fixing device 3 is placed over the bent portion 52 so that a gap is created between the bent portion 52 of the solar power generation device 2 and the connecting portion 61 of the fixing device 3. In this embodiment, covering the bent portion 52 with the packing 4 necessarily creates a gap that is equal to or greater than the thickness of the packing 4 between the bent portion 52 and the connecting portion 61 of the fixing device 3.

[0101] Next, as shown in Figure 4(A), an arrangement process is carried out in which the fixing device 3 is positioned between one side area 101a of one tilting member 101A and one side area 101b of the other tilting member 101B, and the crimping device 100 is arranged so that the connecting member 102 is along the connecting portion 61.

[0102] Next, as shown in Figure 4(B), an operation is performed to tilt the pair of tilting members 101A, 101B so that one side ranges 101a, 101b of the pair of tilting members 101A, 101B approach each other, and the pair of tilting members 101A, 101B presses the pair of clamping portions 60A, 60B to crimp the fixing device 3, whereby the gasket 4 and the folded portion 52 are clamped between the pair of clamping portions 60A, 60B, and the solar power generation device 2 is fixed to the convex portion 51 (fixing object) of the folded roof 50, thereby performing a fixing process.

[0103] When removing the fixing device 3 from the solar power generation device 2 after the solar power generation device 2 has been fixed to the convex portion 51 (fixing object) by the fixing device 3 (i.e., the bent portion 52 of the solar power generation device 2 is clamped between the pair of clamping portions 60A, 60B), first, as shown in Figure 5(A), an arrangement process is carried out in which the crimping device 100 is arranged so that the fixing device 3 is positioned between one side range 101a, 101b of the pair of tilting members 101A, 101B and there is a gap between the connecting portion 61 and the connecting member 102.

[0104] 5(B), an operation is performed to tilt the pair of tilting members 101A, 101B so that one-side regions 101a, 101b of the pair of tilting members 101A, 101B approach each other, and the pair of tilting members 101A, 101B presses the pair of clamping portions 60A, 60B of the fixing device 3, thereby applying an external force to the fixing device 3 in the direction in which the pair of clamping portions 60A, 60B face each other (the left-right direction in FIGS. 1 and 4), compressing the connecting portion 61, thereby performing a deformation step in which deformation (compressive deformation or fracture) occurs in the connecting portion 61 along the thin-walled portion 68 (easily deformable portion). According to this deformation step, the above-mentioned deformation (compressive deformation or fracture) occurs in the connecting portion 61, making the fixing device 3 easy to remove.

[0105] Next, in a state where the above-described deformation has occurred in the connecting portion 61, a removal step is carried out in which the fixing device 3 is removed from the bent portion 52 of the solar power generation device 2 covered with the packing 4.

[0106] It should be noted that the present invention does not require the use of the crimping tool 100 to perform the work of fixing the photovoltaic power generation device 2 to the protrusion 51 (fixing target) with the fixing tool 3 and the work of removing the fixing tool 3 from the photovoltaic power generation device 2, and the above work may be performed using a tool other than the crimping tool 100. Furthermore, when removing the fixing tool 3 from the photovoltaic power generation device 2, an external force that stretches the connecting portion 61 in the direction in which the pair of clamping portions 60A, 60B face each other (the left-right direction in FIGS. 1 and 3) may be applied to the fixing tool 3 to cause an elongation deformation in the connecting portion 61 along the thin-walled portion 68 (easily deformable portion), and then the fixing tool 3 may be removed from the bent portion 52 of the photovoltaic power generation device 2 covered with the packing 4.

[0107] According to the fixing device 3 and fixing structure 1 of this embodiment, an external force that compresses or stretches the connecting portion 61 is applied to the fixing device 3, causing the connecting portion 61 to deform along the thin-walled portion 68 (easily deformable portion), thereby making it possible to easily remove the fixing device 3 from the solar power generation device 2.

[0108] Furthermore, according to the fixing structure 1 of this embodiment, the solar power generation device 2 is fixed to the protrusion 51 (fixing target) with a gap between the bent portion 52 and the connecting portion 61, which prevents the connecting portion 61, which has been deformed such as broken, from coming into contact with the bent portion 52 of the solar power generation device 2. Therefore, it is possible to remove the fixing device 3 without damaging the bent portion 52 of the solar power generation device 2. Furthermore, according to the fixing structure 1 of this embodiment, the bent portion 52 is covered with the packing 4, which also prevents damage to the bent portion 52.

[0109] Furthermore, the crimping tool 100 of this embodiment can be used for both the task of fixing the solar power generation device 2 to the convex portion 51 (fixing target) using the fixing tool 3, and the task of removing the fixing tool 3 from the solar power generation device 2 that has been fixed to the convex portion 51 (fixing target) using the fixing tool 3, so the number of tools required to perform both of the above tasks can be kept to a minimum.

[0110] 4, the fixing method for the solar power generation device 2 according to the present embodiment involves placing the crimping tool 100 so that the connecting member 102 is aligned with the connecting portion 61, and then using the pair of tilting members 101A, 101B to press the pair of clamping portions 60A, 60B to crimp the fixing device 3, thereby preventing the connecting portion 61 from being deformed by the force applied to the clamping portions 60A, 60B by the tilting members 101A, 101B. This allows the solar power generation device 2 to be fixed to the protrusion 51 (fixed object) without causing deformation of the connecting portion 61 along the thin-walled portion 68 (easily deformable portion), thereby ensuring that the solar power generation device 2 is reliably fixed to the protrusion 51 (fixed object).

[0111] 5, when the crimping tool 100 is positioned so that there is a gap between the connecting portion 61 and the connecting member 102, the pair of tilting members 101A, 101B presses the pair of clamping portions 60A, 60B, causing deformation along the thin-walled portion 68 (easily deformable portion) (because there is a gap between the connecting portion 61 and the connecting member 102, the deformation of the connecting portion 61 is not suppressed by the connecting member 102). This makes it easy to remove the fixing tool 3.

[0112] The present invention is not limited to the above-described embodiment and may be modified in various ways. Modifications of the present invention will be described below. In the following, components corresponding to those shown in the above-described embodiment will be assigned the same reference numerals as those in the above-described embodiment, and detailed descriptions thereof will be omitted.

[0113] For example, the fixing structure of the present invention can be modified as shown in FIG.

[0114] The fixing structure 70 shown in Figure 6 comprises a solar power generation device 2, a fixing device 71, and a gasket 4, and the folding portion 52 of the solar power generation device 2, which is folded along the convex portion 51 (fixing object) of the half-height roof 50, and the gasket 4 covering the folding portion 52 are clamped between a pair of clamping portions 60A, 60B of the fixing device 71, thereby fixing the solar power generation device 2 to the convex portion 51 (fixing object).

[0115] The fixing device 71 is bifurcated, similar to the fixing device 3 shown in Figure 1, and has a pair of clamping portions 60A, 60B that clamp the bent portion 52 and gasket 4 of the solar power generation device 2, and a connecting portion 61 that connects the pair of clamping portions 60A, 60B.By clamping the bent portion 52 and gasket 4 with the pair of clamping portions 60A, 60B, the solar power generation device 2 can be fixed to the convex portion 51 (fixing object) of the folded roof 50.

[0116] 7 is an enlarged plan view of a portion of connecting portion 61 within range A in FIG. 6 (FIG. 7 shows the portion of connecting portion 61 within range A in FIG. 6 as viewed from above in FIG. 6, and the front-to-back direction in FIG. 7 corresponds to the up-and-down direction in FIG. 6). A through-hole 72 forming an easily deformable portion is formed in connecting portion 61. Through-hole 72 (easily deformable portion) causes deformation (compressive deformation, elongation deformation, or breakage) in connecting portion 61 along through-hole 72 (easily deformable portion) when an external force that compresses or elongates connecting portion 61 is applied to fixing device 3 in the direction in which the pair of clamping portions 60A, 60B face each other (corresponding to the left-to-right direction in FIGS. 6 and 7). From the viewpoint of ensuring the above-mentioned deformation when fixing device 71 is removed from solar power generation device 2 fixed to protrusion 51 (fixing target) by fixing device 71, it is preferable that through-hole 72 (easily deformable portion) be formed at boundary 63 of the fork of fixing device 71.

[0117] The number of through holes 72 formed in the connecting portion 61 is arbitrary, and one or more through holes 72 may be formed in the connecting portion 61. When one through hole 72 is formed in the connecting portion 61, it is preferable that the length of one through hole 72 in the depth direction of the fixing device 71 is 5% or more of the total length of the connecting portion 61 in the depth direction. When multiple through holes 72 are formed in the connecting portion 61, it is preferable that the multiple through holes 72 are arranged at intervals in the depth direction. The depth direction of the fixing device 71 refers to the direction perpendicular to the cross section of the fixing device 71 (the front-rear direction in FIG. 6, the up-down direction in FIG. 7).

[0118] 6, the crimping tool 100 shown in Fig. 4 and Fig. 5 can also be used to fix the solar power generation device 2 to the protrusion 51 (fixing target) with the fixture 71, and to remove the fixture 71 from the solar power generation device 2 after the solar power generation device 2 has been fixed to the protrusion 51 (fixing target) with the fixture 71 (i.e., to release the fixation of the solar power generation device 2 by the fixture 71). Both of these operations can be performed in the same manner as in the above embodiment. In a step corresponding to the deformation step (FIG. 5(B)) shown in the above embodiment, the pair of tilting members 101A, 101B are tilted so that one side regions 101a, 101b of the pair of tilting members 101A, 101B approach each other, and the pair of tilting members 101A, 101B press the pair of clamping portions 60A, 60B of the fixing device 71, thereby applying an external force to the fixing device 3 that compresses the connecting portion 61, causing deformation (compressive deformation or fracture) in the connecting portion 61 along the through-hole 72 (easy-to-deform portion), thereby making the fixing device 3 easy to remove. In addition, an external force to extend the connecting portion 61 may be applied to the fixing device 3 to cause extension deformation in the connecting portion 61 along the through-hole 72 (easy-to-deform portion), and then the fixing device 3 may be removed from the bent portion 52 of the solar power generation device 2 covered with the packing 4.

[0119] The fixing structure of the present invention may also be a structure obtained by omitting the packing 4 from the fixing structures 1, 70 (FIGS. 1 and 6) described above (fixing structure 80 shown in FIG. 8 is obtained by omitting the packing 4 from the fixing structure 1 shown in FIG. 1). In this case, the fixing structure of the present invention includes the solar power generation device 2 and a fixing device 3 or 71 (FIGS. 1 and 6), and the bent portion 52 of the solar power generation device 2 bent along the convex portion 51 (fixing target) of the folded roof 50 is clamped between a pair of clamping portions 60A, 60B of the fixing device 3 or 71, thereby fixing the solar power generation device 2 to the convex portion 51 (fixing target).

[0120] Even when the packing 4 is omitted as described above, the crimping tool 100 shown in Fig. 4 and Fig. 5 can be used to fix the solar power generation device 2 to the protrusion 51 (fixing target) with the fixing tool 3 or 71 (Fig. 1, Fig. 6) and to remove the fixing tool 3 or 71 from the solar power generation device 2 after the solar power generation device 2 has been fixed to the protrusion 51 (fixing target) with the fixing tool 3 or 71 (i.e., to release the fixing of the solar power generation device 2 by the fixing tool 3 or 71). Moreover, both of the above-mentioned operations can be performed in the same manner as in the above-described embodiment.

[0121] In addition, when the gasket 4 is omitted as described above, in the step corresponding to the covering step shown in the embodiment, the fixing device 3 or 71 is placed over the folded portion 52 of the solar power generation device 2 bent along the convex portion 51 (fixing object) so that the folded portion 52 is inserted into the space between the pair of clamping portions 60A, 60B, and the steps after the covering step (the positioning step and fixing step when fixing the solar power generation device 2, and the positioning step, deformation step, and removal step when removing the fixing device 3 from the solar power generation device 2) are performed in a state where the folded portion 52 is not covered with the gasket 4.

[0122] Furthermore, when the packing 4 is omitted as described above, it is preferable to cover the bent portion 52 with the fixing device 3 so that a gap is created between the bent portion 52 of the photovoltaic power generation device 2 and the connecting portion 61 of the fixing device 3 in a step corresponding to the covering step described above. In this way, the fixing structure fixes the bent portion 52 to the protruding portion 51 (fixing target) with a gap created between the bent portion 52 and the connecting portion 61. Therefore, when the connecting portion 61 is deformed along the thin-walled portion 68 or the through-hole 72 (easily deformable portion) in a step corresponding to the deformation step described in the above embodiment, the deformed connecting portion 61 can be prevented from coming into contact with the photovoltaic power generation device 2. Therefore, the fixing device 3 or 71 can be removed from the photovoltaic power generation device 2 without damaging the photovoltaic power generation device 2.

[0123] When packing 4 is omitted as described above, positions 64A, 64B of fastener 3 that form a corner when bent portion 52 is sandwiched between pair of clamping portions 60A, 60B are defined as both ends of connecting portion 61. In the example shown in Fig. 8, before bent portion 52 is sandwiched between clamping portions 60A, 60B, fastener 3 has a bifurcated shape that is line-symmetrical, and thus bifurcated boundary 63 of fastener 3 is located on a plane that divides fastener 3 line-symmetrically. In the example shown in FIG. 8, the above-mentioned corners forming ends 64A, 64B of connecting portion 61 are formed in advance in fastener 3, but the corners forming ends 64A, 64B of connecting portion 61 may also be created by clamping bent portion 52 with a pair of clamping portions 60A, 60B (in this case, the extent of connecting portion 61 can be identified by clamping bent portion 52 with a pair of clamping portions 60A, 60B to create the corners forming ends 64A, 64B).

[0124] Furthermore, when the packing 4 is omitted as described above, before the clamping portions 60A, 60B sandwich the bent portion 52, the connecting portion 61 may be linear, arc-shaped, or have a shape that is bent at an acute angle at the bifurcated boundary 63. Furthermore, before the clamping portions 60A, 60B sandwich the bent portion 52, the side plate portions 66, 66 of the clamping portions 60A, 60B do not need to be parallel. For example, the side plate portions 66, 66 may be inclined so that they move farther apart or closer together toward the tip ends (opposite the connecting portion 61) of the side plate portions 66, 66. Furthermore, in the example shown in FIG. 8 , each of the clamping portions 60A, 60B has a claw portion 67 as a portion of the fixing device 3 that bites into the solar power generation device 2. However, the claw portions 67, 67 of the clamping portions 60A, 60B are not necessarily required and may be omitted.

[0125] Furthermore, in the present invention, the object to which the solar power generation device 2 is fixed is not limited to the protruding portion 51 of the folded roof 50. The object to which the solar power generation device 2 is fixed can be various objects along which the folded portion 52 of the solar power generation device 2 (the folded portion of the solar power generation device 2) is aligned. For example, the object to which the solar power generation device 2 is fixed is formed by a portion of a building material along which the folded portion 52 of the solar power generation device 2 is aligned. Examples of building materials include roofing materials other than folded roofs, wall materials (metal siding materials, ceramic siding materials, sandwich panels, etc.), partitions, door materials, fence materials, flooring materials, etc. Examples of the roofing materials include roofing materials used for slate roofs, roof decks, tile roofing, and vertical flat roofing. The roof may be vertically or horizontally roofed. Furthermore, in the present invention, the member having the portion that constitutes the object to be fixed may be a pavement forming a road, or may be a structure such as an automobile, train, or ship. In the illustrated example, the material of the "member having a portion to be fixed" is not particularly limited, and may be, for example, metal, resin, asphalt, or concrete. [Explanation of symbols]

[0126] 1,70 Fixed structure 2. Solar power generation equipment 3,71 Fixtures 4. Gasket 52 Bend part 60A,60B clamping part 61 Joint 63 Fixture fork boundary 68 Thin-walled section (easily deformable section) 72 Through hole (easily deformable part) 100 Crimping tool 101A, 101B tilting member 101a One side range of one tilting member 101b One side range of the other tilting member 102 Connecting member 103 First hinge 104 Second hinge

Claims

1. A fixture for fixing a solar power generation device to a fixing object in a state in which the solar power generation device is bent along the fixing object, the fixing portion is bifurcated and includes a pair of clamping portions that clamp a bent portion of the solar power generation device bent along the fixing object to fix the solar power generation device to the fixing object, and a connecting portion that connects the pair of clamping portions, The connecting portion has an easily deformable portion formed therein, A fixing device that can cause deformation of the connecting portion along the easily deformable portion by applying an external force to the fixing device that compresses or stretches the connecting portion in the direction in which the pair of clamping portions face each other.

2. The fixture according to claim 1 , wherein the easily deformable portion is formed at a boundary between two branches of the fixture.

3. A fixture for fixing a solar power generation device to a fixing object in a state in which the solar power generation device is bent along the fixing object, the fixing portion is bifurcated and includes a pair of clamping portions that clamp a bent portion of the solar power generation device bent along the fixing object to fix the solar power generation device to the fixing object, and a connecting portion that connects the pair of clamping portions, The fastener, wherein the connecting portion has a thin portion that is thinner than the average thickness of the fastener, or a through hole that penetrates the connecting portion in the thickness direction.

4. The fixture according to claim 3 , wherein the thin-walled portion or the through-hole is formed at a boundary between two branches of the fixture.

5. A solar power generation device; The fixture according to claim 3, A fixing structure for a solar power generation device in which the solar power generation device is fixed to the fixing object by clamping the bent portion of the solar power generation device bent along the fixing object between the pair of clamping portions.

6. The fixing structure for a solar power generation device according to claim 5 , wherein the solar power generation device is fixed to the fixing object with a gap between the bent portion and the connecting portion.

7. Further, a packing made of an elastic material and covering the bent portion is provided. The fixing structure for a solar power generator according to claim 5 , wherein the bent portion and the packing are sandwiched between the pair of clamping portions, thereby fixing the solar power generator to the fixing object.

8. A crimping tool used in an operation of fixing a photovoltaic power generation device to a fixing target using the fixing device according to claim 3, and in an operation of removing the fixing device from the photovoltaic power generation device in a state in which the photovoltaic power generation device has been fixed to the fixing target using the fixing device, a pair of rod-shaped or plate-shaped tilting members; a rod-shaped or plate-shaped connecting member; One end of the connecting member is connected to an intermediate position of one of the tilting members via a first hinge, and the other end of the connecting member is connected to an intermediate position of the other tilting member via a second hinge, so that the one tilting member can tilt around the first hinge as an axis, and the other tilting member can tilt around the second hinge as an axis, A crimping tool that can align the connecting member with the connecting portion and create a gap between the connecting portion and the connecting member when the fixing device is positioned between one side area of ​​the first hinge on one tilting member and one side area of ​​the second hinge on the other tilting member.

9. A fixing method for fixing the solar power generation device to the fixing target with the fixing tool using the caulking tool according to claim 8, a covering step of covering the bent portion of the solar power generation device bent along the fixing target with the fixing tool so that the bent portion is inserted into the space between the pair of clamping parts; an arrangement step of arranging the crimping tool so that the fixing tool is located between the one side area of ​​the one tilting member and the one side area of ​​the other tilting member and the connecting member is along the connecting portion; a fixing step of tilting the pair of tilting members so that one side ranges of the pair of tilting members approach each other, and pressing the pair of clamping portions with the pair of tilting members to crimp the fixing device, thereby clamping the bent portion between the pair of clamping portions and fixing the solar power generation device to the fixing object.

10. A method for removing the fastener from the photovoltaic power generation device in a state in which the photovoltaic power generation device has been fixed to the fixing target by the fastener, using the caulking tool according to claim 8, comprising: The solar power generation device fixed to the fixing object by the fixing tool is in a state where a bent portion of the solar power generation device bent along the fixing object is sandwiched between the pair of clamping portions of the fixing tool, The method for removing the fixing device includes: an arrangement step of arranging the crimping tool so that the fixing tool is located between one side regions of the pair of tilting members and a gap is provided between the connecting portion and the connecting member; a deformation process in which the pair of tilting members are tilted so that one-side ranges of the pair of tilting members approach each other, and the pair of clamping portions are pressed by the pair of tilting members, thereby causing deformation along the thin-walled portion or the through hole in the connecting portion; and a removing step of removing the fastener from the bent portion while the deformation occurs in the connecting portion.

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