Solar power generation device, and support structure for solar power generation device

Abstract

To provide a solar power generation device that can be supported by a construction material while maintaining waterproofing performance.SOLUTION: A solar power generation device 2 includes: a main body 4 comprising a power generation unit 10 disposed between a barrier sheet 7 forming a front surface 6 and a back sheet 9 forming a rear surface 8; and a rigid member 5 connected to the main body 4 by clamping a clamped section 12, which includes a portion 7a of the barrier sheet 7 and a portion 9a of the back sheet 9. The solar power generation device 2 is supported by a construction material 100 through attachment of the rigid member 5 to a supported member 3 that is supported by the construction material 100.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a solar power generation device and a support structure for the solar power generation device. [Background technology]

[0002] Conventionally, a solar power generation device in which a power generation unit is disposed between two sheets has been used, as disclosed in Patent Document 1. This type of solar power generation device is hung from a construction material by a rod, and the hole through which the rod passes is a hole formed in the solar power generation device itself, or a hole in a grommet fitted into the hole in the solar power generation device. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-67924 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, when the solar power generation device is hung using a hole formed in the solar power generation device itself, the hole expands due to the weight of the solar power generation device, and moisture can easily enter the inside of the solar power generation device through the hole. Also, when a grommet is used, when the solar power generation device flaps in the wind, a large external force is applied to the grommet, and the hole of the solar power generation device with the grommet inserted expands, creating a gap between the hole of the solar power generation device and the grommet, and moisture can easily enter the inside of the solar power generation device through this gap. The above problem can occur significantly when the solar power generation device has a large area.

[0005] The present invention has been made in consideration of the above-mentioned matters, and its object is to provide a solar power generation device that can be supported on a construction material while maintaining water-stopping properties, and a support structure for the solar power generation device. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention includes the subject matter described in the following paragraphs.

[0007] Item 1. A main body having a power generating unit disposed between a barrier sheet constituting a front surface and a back sheet constituting a rear surface; a hard member that is connected to the main body by clamping a clamped portion including at least a part of the barrier sheet and a part of the back sheet, The solar power generation device is supported by a construction material by attaching the hard member to a supported member supported by the construction material.

[0008] Item 2. The main body portion includes a sealing edge material that seals between the outer peripheral edge of the barrier sheet and the outer peripheral edge of the back sheet, 2. The photovoltaic power generation device according to item 1, wherein the clamped portion includes a part of the sealing edge material.

[0009] Item 3. The backsheet includes a backsheet main body constituting the back surface, a backsheet sealing portion extending from a part of the outer peripheral edge of the backsheet main body and sealing a gap between a part of the outer peripheral edge of the backsheet main body and a part of the outer peripheral edge of the barrier sheet, and a backsheet overlapping portion extending from a tip of the backsheet sealing portion and overlapping the barrier sheet, The back sheet includes a part of the back sheet body, a part of the back sheet sealing portion, 2. The solar power generation device according to item 1, wherein the whole of the backsheet polymerized portion is included, or a part or the whole of the backsheet polymerized portion is included.

[0010] Item 4. The barrier sheet comprises a barrier sheet main body constituting the surface, a barrier sheet sealing portion extending from a part of the outer periphery of the barrier sheet main body and sealing between a part of the outer periphery of the barrier sheet main body and a part of the outer periphery of the back sheet, and a barrier sheet overlapping portion extending from a tip of the barrier sheet sealing portion and overlapping with the back sheet, 2. The photovoltaic power generating device according to item 1, wherein the part of the barrier sheet includes a part of the barrier sheet main body, the whole of the barrier sheet sealing portion, and a part or the whole of the barrier sheet overlapping portion.

[0011] Item 5. The photovoltaic power generation device according to any one of Items 1 to 4, wherein the clamped portion is in a compressed state by being clamped by the hard members.

[0012] Item 6. The photovoltaic power generation device according to item 5, wherein the thickness of the clamped portion is 80% or more of the thickness of the remaining portion of the main body that is not clamped by the hard members.

[0013] Item 7. The clamped portion includes a core material made of metal or hard resin, 5. The photovoltaic power generation device according to any one of items 1 to 4, wherein the sandwiched portion is in a state where the core material is disposed between a part of the barrier sheet and a part of the back sheet, and a part other than the core material is compressed.

[0014] Item 8. The end portions on one side and the other side in the longitudinal direction of the main body are each constituted by the clamped portion, and each of the clamped portions is clamped by the hard member, thereby connecting the hard member to the end portions on one side and the other side in the longitudinal direction of the main body, A solar power generation device described in any one of items 1 to 7, wherein the hard member connected to one end of the main body in the longitudinal direction is attached to a first supported member, and the hard member connected to the other end of the main body in the longitudinal direction is attached to a second supported member that is positioned lower than the first supported member.

[0015] Item 9. The main body portion is formed by alternating thick-walled portions and thin-walled portions having a thickness smaller than that of the thick-walled portions in the longitudinal direction, 9. The solar power generating device according to any one of items 1 to 8, wherein the power generating section is provided in the thick section.

[0016] Item 10. A solar power generation device according to item 9 when claim 8 is cited, the solar power generation device is configured such that the thin portion is formed between a first thick portion provided on one side in the longitudinal direction and a second thick portion provided on the other side in the longitudinal direction, and the power generation portion is provided in each of the first and second thick portions; A photovoltaic power generation device in which the first clamped portion is formed in the first thick portion, and the second clamped portion is formed in the second thick portion.

[0017] Item 11. The photovoltaic power generation device according to any one of Items 1 to 10, wherein the hard member is attached to the supported member by passing the supported member through a through hole of the hard member.

[0018] Item 12. The solar power generation device according to any one of Items 1 to 10, wherein the hard member is attached to the supported member by fitting the hard member into a slit of the supported member.

[0019] Item 13. The solar power generation device according to any one of items 1 to 12, A supported member supported by the construction material, A support structure for a solar power generation device in which the hard member is attached to the supported member, thereby supporting the solar power generation device on the construction material.

[0020] Item 14. A first supported member; a second supported member disposed below the first supported member, The solar power generation device is the solar power generation device according to item 8, the hard member connected to one end of the main body in the longitudinal direction is attached to the first supported member, The hard member connected to the other longitudinal end of the main body is attached to the second supported member. Item 14. The support structure for a photovoltaic power generation device according to item 13, wherein a distance between the first supported member and the second supported member in a vertical direction is changeable.

[0021] Item 15. The construction material has a plurality of holes formed at intervals in the vertical direction, One or both of the first and second supported members are rods that are supported by the construction material by being passed through a hole in the construction material, Item 15. A support structure for a solar power generation device as described in item 14, wherein the distance between the first supported member and the second supported member in the vertical direction is changed by changing the holes in the construction material through which one or both of the first and second supported members pass.

[0022] Item 16. One or both of the first and second supported members are bolts screwed into threaded holes formed in the construction material; A support structure for a solar power generation device as described in item 14, wherein the distance between the first supported member and the second supported member in the vertical direction is changed by changing the length to which one or both of the first and second supported members are screwed into the screw hole. Effect of the Invention

[0023] According to the present invention, it is possible to support a solar power generation system on a construction material while maintaining the waterproofing properties of the solar power generation system. [Brief description of the drawings]

[0024] [Figure 1] 1A is a front view showing a support structure for a solar power generation device according to a first embodiment of the present invention, and FIG. 1B is a cross-sectional view showing the support structure according to the first embodiment cut along line AA in FIG. [Diagram 2] 1A is a cross-sectional view showing the state where the main body of the solar power generation device is cut along the line BB in FIG. 1A. FIG. 1B is an enlarged view of part a in FIG. 1A. FIG. 1C is a cross-sectional view showing the state where the power generation unit is cut along the line CC in FIG. 1A. [Diagram 3] 1B. (A) and (B) are cross-sectional views corresponding to FIG. 1B, showing modified examples of the support structure for the solar power generation device according to the first embodiment. [Figure 4]1B. (A) and (B) are cross-sectional views corresponding to FIG. 1B, showing modified examples of the support structure for the solar power generation device according to the first embodiment. [Diagram 5] 1A is a front view showing a modified example of the support structure for a solar power generation device according to the first embodiment of the present invention, and FIG. 1B is a cross-sectional view showing the modified example of the support structure for the first embodiment cut along line DD in FIG. [Figure 6] 1A is a front view showing a support structure for a solar power generation device according to a second embodiment of the present invention, and FIG. 1B is a cross-sectional view showing the support structure according to the second embodiment cut along line EE of FIG. [Figure 7] 6(A) and 6(B) are cross-sectional views corresponding to FIG. 6(B) and showing a modified example of the support structure of the solar power generation device according to the second embodiment. [Figure 8] 6(A) and 6(B) are cross-sectional views corresponding to FIG. 6(B) and showing a modified example of the support structure of the solar power generation device according to the second embodiment. [Figure 9] 6(A) and 6(B) are cross-sectional views corresponding to FIG. 6(B) and showing a modified example of the support structure of the solar power generation device according to the second embodiment. [Figure 10] 1A is a front view showing a modified support structure for a solar power generation device according to the first embodiment, and FIG. 1B is a cross-sectional view showing the modified support structure for the first embodiment cut along line FF in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] First Embodiment Hereinafter, a first embodiment of the present invention will be described with reference to the accompanying drawings. Fig. 1(A) is a front view showing a support structure 1 according to a first embodiment of the present invention. Fig. 1(B) is a cross-sectional view showing the support structure 1 cut along line AA in Fig. 1(A).

[0026] The support structure 1 according to the first embodiment includes a solar power generation device 2 and a plurality of supported members 3 supported by a construction material 100. Examples of the construction material 100 include wall materials (metal siding materials, ceramic siding materials, sandwich panels, etc.), roofing materials, partitions, door materials, fence materials, flooring materials, etc. Examples of the roofing materials include roofing materials used for folded plate roofs, slate roofs, roof decks, tile roofing, vertical flat roofing, etc. The roof may be vertically roofed or horizontally roofed.

[0027] The solar power generation device 2 includes a main body 4 and a hard member 5 connected to the main body 4, and is supported by the construction material 100 by attaching the hard member 5 to the supported member 3 at multiple positions in the width direction (left-right direction in FIG. 1(A)). In the present invention, the "hard member" means a member having a Young's modulus of 25 MPa or more. The Young's modulus is measured by the method of JIS K 7161. The width of the hard member 5 is, for example, 60% or more of the width of the main body 4, preferably 70% or more, and more preferably 90% or more.

[0028] (Solar power generation device 2) Fig. 2(A) is a cross-sectional view showing the state where the main body 4 of the solar power generation device 2 is cut along the line BB in Fig. 1. Fig. 2(B) is an enlarged view of part a in Fig. 2(A). Fig. 2(C) is a cross-sectional view showing the state where the power generation unit is cut along the line CC in Fig. 2(A).

[0029] The main body 4 of the solar power generation device 2 has a power generation unit 10 and a sealant 11 disposed between a barrier sheet 7 constituting a front surface 6 and a back sheet 9 constituting a back surface 8, and the sealant 11 is filled around the power generation unit 10 between the sheets 7 and 9. The main body 4 generates electricity in the power generation unit 10 when light irradiated to the front surface 6 is incident on the power generation unit 10. The hard member 5 is connected to the main body 4 by clamping a clamped portion 12 that forms one end of the main body 4 in the longitudinal direction. In the range of the outer periphery of the main body 4 to which the hard member 5 is connected, the barrier sheet 7 and the back sheet 9 are sealed by the hard member 5. In the range of the outer periphery of the main body 4 to which the hard member 5 is not connected, a sealing edge material 13 is provided to seal the barrier sheet 7 and the back sheet 9.

[0030] The main body 4 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, when 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, when 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, and the like.

[0031] The main body 4 is formed in a generally rectangular shape when viewed from the front. However, the present invention does not particularly limit the shape of the main body 4, and the main body 4 may be, for example, generally circular, elliptical, or polygonal when viewed from the top.

[0032] The main body 4 has flexibility (the property that an object can bend). In the present invention, the main body 4 has flexibility means that the main body 4 has a bending strength of 10 MPa or more, or that the main body 4 has a bending modulus of 100 MPa or more. The bending strength of the main body 4 is more preferably 20 MPa or more, more preferably 50 MPa or more. The bending strength of the main body 4 is preferably 200 MPa or less, more preferably 150 MPa or less, and more preferably 50 MPa or less. The bending modulus of the main body 4 is more preferably 500 MPa or more. The bending modulus of the main body 4 is preferably 10000 MPa or less, more preferably 5000 MPa or less. When the flexibility of the main body 4 is evaluated by the bending strength, the bending modulus may not be included in the above range. When the flexibility of the main body 4 is evaluated by the bending modulus, the bending strength may not be included in the above range. The bending strength and bending modulus of the main body 4 are measured in accordance with JIS K 7171.

[0033] (Back seat 9) The back sheet 9 has a barrier property against water vapor and a protective property against external forces. The back sheet 9 may have light-transmitting properties, but does not necessarily have to have light-transmitting properties. In this specification, "light-transmitting properties" means that the light transmittance is greater than 15% with respect to the peak wavelength of light before incidence. Examples of materials for the back sheet 9 include synthetic resins such as thermoplastic resins, thermosetting resins, general-purpose plastics, engineering plastics, vinyl resins (e.g., polyvinyl chloride), natural resins, rubber, metals, carbon, and pulp.

[0034] The modulus of longitudinal elasticity of the back sheet 9 is preferably 2400 MPa or more, more preferably 3000 MPa or more. The modulus of longitudinal elasticity of the back sheet 9 is preferably 4200 MPa or less, more preferably 3100 MPa or less. Examples of the material of the back sheet 9 include synthetic resins such as thermoplastic resins, thermosetting resins, general-purpose plastics, engineering plastics, and vinyl resins (e.g., polyvinyl chloride). Examples of the material of the back sheet 9 that may be used include natural resins, rubber, metals, carbon, and pulp, in addition to synthetic resins.

[0035] The thickness of the back sheet 9 is preferably 50 μm or more, and more preferably 100 μm or more, and is preferably 2000 μm or less, and more preferably 1000 μm or less.

[0036] (Power Generation Section 10) The power generation section 10 includes a power generation cell 20 (FIG. 2(A)), 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.

[0037] (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 a direction from the barrier sheet 7 toward the back sheet 9. That is, they are disposed so that the light-transmitting substrate 21 faces the barrier sheet 7, and the electrode 24 faces the back sheet 9.

[0038] (Translucent base material 21) The light-transmitting substrate 21 supports the light-transmitting conductive layer 22, the power generation layer 23, and the electrode 24. The light-transmitting substrate 21 has light-transmitting properties. The light-transmitting properties of the light-transmitting substrate 21 may be such that the light transmittance is greater than 15% with respect to the peak wavelength of 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 light before incidence is defined as "transparent."

[0039] Examples of the material of the light-transmitting base material 21 include inorganic materials, organic materials, and metal materials. Examples of the inorganic materials include quartz glass and non-alkali glass. Examples of the organic materials include polyethylene terephthalate (PET). ), polyethylene naphthalene (PEN), polyethylene, Examples of the material include plastics such as polyimide, polyamide, polyamideimide, liquid crystal polymer, and cycloolefin polymer, and polymer films. Examples of the metal material include stainless steel, aluminum, titanium, and silicon.

[0040] There are no particular limitations on the thickness of the light-transmitting substrate 21 as long as it can support the light-transmitting conductive layer 22, the power generation layer 23, and the electrodes 24, and the thickness may be, for example, 10 μm or more and 300 μm or less.

[0041] The light-transmitting base material 21 is a base material that is required in the manufacturing process of the power generating cell 20, but is not necessarily a necessary 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 the manufacturing process. When removed, a base material that does not have light-transmitting properties may be used instead of the light-transmitting base material 21.

[0042] (Transparent conductive layer 22) The transparent conductive layer 22 is a layer having electrical conductivity and functions as a cathode. The transparent conductive layer 22 has light transmitting properties. The transparent conductive layer 22 is preferably transparent.

[0043] The transparent conductive layer 22 is, for example, made of indium tin oxide (ITO). Examples of the transparent material include transparent materials such as 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, a sputtering method, an ion plating method, a plating method, a coating method, etc.

[0044] The light-transmitting conductive layer 22 may be configured to have light-transmitting properties by forming a light-transmitting pattern using an opaque material. Examples of the opaque material include platinum, gold, silver, copper, aluminum, rhodium, indium, titanium, nickel, tin, zinc, and alloys containing these. Examples of the light-transmitting pattern include a lattice shape, a line shape, a wavy line shape, a honeycomb shape, and a round hole shape.

[0045] 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.

[0046] (Power Generation Layer 23) The power generation layer 23 is a layer that causes photoelectric conversion by irradiation with light, and generates electrons and holes from excitons 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 laminated in this order along the direction from the translucent conductive layer 22 toward the electrode 24.

[0047] (Hole transport layer 30) The hole transport layer 30 extracts holes generated in the photoelectric conversion layer 31 to the light-transmitting conductive layer 22, and prevents electrons generated in the photoelectric conversion layer 31 from moving to the light-transmitting conductive layer 22. For example, a metal oxide can be used as the material for the hole transport layer 30. Examples of the metal oxide include titanium oxide, molybdenum oxide, vanadium oxide, zinc oxide, nickel oxide, lithium oxide, calcium oxide, cesium oxide, and aluminum oxide. Other examples include delafossite-type compound semiconductor (CuGaO2), copper oxide, and copper thiocyanate (CuSCN). , vanadium pentoxide (VO), graphene oxide, etc. may also be used. The material of layer 30 may be a p-type organic semiconductor or a p-type inorganic semiconductor.

[0048] 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. If the thickness of the hole transport layer 30 is 1 nm to 1000 nm, the transport of holes can be realized.

[0049] (Photoelectric conversion layer 31) The photoelectric conversion layer 31 (photoactive layer) is a layer that converts absorbed light into electricity. There are no particular limitations on the material of the photoelectric conversion layer 31 as long as it can convert absorbed light into electricity, and for example, amorphous silicon, perovskite, non-silicon-based materials (semiconductor material CIGS), etc. are used. The photoelectric conversion layer 31 may also have a tandem-type laminated structure that combines these materials. The photoelectric conversion layer 31 using a non-silicon-based material uses the semiconductor material CIGS containing copper (Cu), indium (In), gallium (Ga), and selenium (Se), which makes it easy to reduce the thickness of the photoelectric conversion layer.

[0050] In the following, as an example of a case where the power generating 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 generating unit 10 will be described. The photoelectric conversion layer 31 containing a perovskite compound has the advantage that the dependency of the power generating efficiency on the angle of incident light (hereinafter, sometimes referred to as the incidence angle dependency) is relatively low. As a result, in this embodiment, a higher power generating efficiency can be obtained.

[0051] The perovskite compound is a structure having a perovskite crystal structure or a crystal similar thereto. The perovskite crystal structure is represented 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.

[0052] 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.

[0053] 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 one type or two or more types.

[0054] 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.

[0055] 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 further 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.

[0056] (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.

[0057] Examples of halogen compounds include lithium halides (LiF, LiCl, LiBr, LiI) and sodium halides (NaF, NaCl, NaBr, NaI). Examples of elements constituting metal oxides include titanium, molybdenum, vanadium, zinc, nickel, lithium, potassium, cesium, aluminum, niobium, tin, and barium. In addition, an n-type organic semiconductor or an n-type inorganic semiconductor can also be used as the material of the electron transport layer 32.

[0058] 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. If the thickness of the electron transport layer 32 is 1 nm or more and 1000 nm or less, electron transport can be realized.

[0059] (electrode 24) The electrode 24 has electrical conductivity and functions as an anode. The electrode 24 can extract electrons from the photoelectric conversion layer 31 in response to the 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, if the electrode 24 is formed of a light-opaque material, the light blocking property of the solar power generation device can be further improved (i.e., the light from the opposite side of the surface 6 can be further prevented 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 these metals.

[0060] (Barrier Sheet 7) The barrier sheet 7 has light-transmitting properties and constitutes the surface 6 of the main body 4 as described above. The barrier sheet 7 is preferably transparent. The barrier sheet 7 has a barrier property against water vapor and a protective property against external forces.

[0061] The barrier sheet 7 has flexibility. The material used for the barrier sheet 7 preferably has a modulus of longitudinal elasticity of 100 Pa or more and 10,000 MPa or less, more preferably 1,000 MPa or more and 5,000 MPa or less. Specific examples of the material for the barrier sheet 7 include a plastic film, a vinyl film, and the like.

[0062] The thickness of the barrier sheet 7 is preferably 50 μm or more, and more preferably 100 μm or more. The thickness of the barrier sheet 7 is preferably 2000 μm or less, and more preferably 1000 μm or less. When the thickness of the barrier sheet 7 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.

[0063] (Sealant 11) The sealant 11 prevents water from entering the power generation layer 23 from around the power generation layer 23. The sealant 11 has light-transmitting properties and is preferably transparent. The sealant 11 does not necessarily need to cover the entire power generation section 10. For example, when a part of the power generation section 10 is exposed from the sealant 11, the exposed part may be covered with a sealing edge material 13 or the like.

[0064] Examples of the material of 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.

[0065] 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. In this manner, the sealant 11 deforms in the planar direction in response to thermal expansion and contraction caused by the temperature difference between the back sheet 9 and the barrier sheet 7. This makes it possible to prevent the back sheet 9 and the barrier sheet 7 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 the Poisson's ratio obtained by a tensile test method.

[0066] From another viewpoint, the viscosity of the sealant 11 can also be specified. The viscosity of the sealant 11 is preferably 11000 mPa·S or more and 700000 mPa·S or less, more preferably 26000 mPa·S or more and 450000 mPa·S or less, and even more preferably 40000 mPa·S or more and 110000 mPa·S or less.

[0067] In this case, examples of the material of the sealant 11 include polyolefin, butyl rubber, silicone resin, polyvinyl butyral, acrylic resin, polyisobutylene resin, etc. In this specification, the "viscosity" is measured at an environmental temperature of 23°C according to the rotational viscometer method of JIS Z8803. This is the value determined.

[0068] The back sheet 9 and the barrier sheet 7 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.

[0069] 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 sufficiently ensure the escape of 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 the workability and ease of installation.

[0070] (Sealing edge material 13) The sealing edge material 13 has a structure in which a first adhesive portion 40 that is adhered to the "surface of the barrier sheet 7 that constitutes the front surface 6", a sealing portion 41 that seals between the barrier sheet 7 and the back sheet 9, and a second adhesive portion 42 that is adhered to the "surface of the back sheet 9 that constitutes the back surface 8" are sequentially connected.

[0071] Examples of the material for the sealing edge material 13 include tape materials made of butyl rubber, silicone rubber, and the like.

[0072] (Function of main body 4 of solar power generation device 2) According to the above-described main body 4, when light irradiated onto the surface 6 enters the power generation unit 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).

[0073] Furthermore, by forming the back sheet 9, the electrode 24, and the electron transport layer 32 from a light-transmitting material, light from the back surface 8 (such as reflected light from construction materials) can be incident on the power generation section 10 and absorbed by the photoelectric conversion layer 31, thereby further activating photoelectric conversion in the photoelectric conversion layer 31.

[0074] In the photoelectric 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 (photoelectric 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 taken out via a power distribution line (not shown).

[0075] By configuring the power generation section 10 from the above-mentioned photoelectric conversion unit, even if a malfunction occurs in some of the power generation cells 20, the amount of electricity extracted from the power generation section 10 can be stabilized.

[0076] 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 manner, the same effect as above can be obtained.

[0077] 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).

[0078] Furthermore, when the power generating section 10 is composed of one power generating cell 20, the current flowing from the electrode 24 to the translucent conductive layer 22 is taken out via a power distribution line.

[0079] 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 planar direction of the solar power generation device 2 and are electrically connected in series or in parallel.

[0080] When the power generation sections 10 are composed of photoelectric conversion units, in order to connect a plurality of power generation sections 10 in series, the translucent conductive layer 22A at an end of one of the power generation sections 10 and the electrode 24A at an end of the other power generation section 10 are connected via a power distribution line in two adjacent power generation sections 10, 10. When connecting a plurality of power generation sections 10 in parallel, the translucent conductive layers 22A at the ends of two adjacent power generation sections 10, 10 and the electrodes 24A at the ends of the two adjacent power generation sections 10, 10 are connected via power distribution lines, respectively.

[0081] 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 the power generation units 10 and the electrode 24 of the other power generation unit 10 are connected via a power distribution line in two adjacent power generation units 10, 10. When connecting a plurality of power generation units 10 in parallel, the translucent conductive layers 22, 22 of two adjacent power generation units 10, 10 and the electrodes 24, 24 of the two adjacent power generation units 10, 10 are connected via power distribution lines, respectively.

[0082] In addition, even when the power generation section 10 is composed of either the above-mentioned photoelectric conversion unit or one power generation cell 20, the distance between adjacent power generation sections 10, 10 is preferably 2 mm or more, more preferably 10 mm or more, and even more preferably 5 mm or more, as long as it is more than 0 mm. In addition, 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.

[0083] (Hard material 5) The hard member 5 is made of a hard resin or a metal. Examples of hard resins for forming the hard member 5 include polyvinyl chloride, PP, PE, PPS, PC, and PEEK. The hard member 5 can be made of NBR, which is a resin that can be used for the hard member 5, or ETFE, PVDF, PTFE, which is a fluororesin. For example, stainless steel, aluminum, etc. can be used as the metal for the plate.

[0084] Through holes 50 are formed at multiple positions in the width direction of the hard member 5 (left-right direction in Figure 1 (A)), and by passing a rod-shaped supported member 3 through each through hole 50, the hard member 5 is attached to the supported member 3 at multiple positions in the width direction (left-right direction in Figure 1 (A)), and the solar power generation device 2 is supported on the construction material 100 in a state extending in the vertical direction.

[0085] In the illustrated example, the supported member 3 extends horizontally from the construction material 100, but the supported member 3 may extend upward or downward from the construction material 100. When the supported member 3 extends downward, for example, the tip side of the supported member 3 can be curved upward to allow the supported member 3 to support the hard member 5. Furthermore, the present invention does not particularly limit the cross-sectional shape of the supported member 3, and the cross-sectional shape of the supported member 3 can be various shapes such as a circle or a polygon.

[0086] Furthermore, the supporting structure 1 according to the first embodiment may include one supported member 3 supported by the construction material 100. In this case, for example, the widthwise center position of the hard member 5 is attached to the supported member 3, whereby the solar power generation device 2 is supported by the construction material 100.

[0087] The hard member 5 has a slit 51 that opens downward when attached to the supported member 3, and the clamped portion 12 is fitted into the slit 51, whereby the clamped portion 12 is clamped by the hard member 5, and the hard member 5 is connected to the main body 4. The clamped portion 12 includes a part 7a of the barrier sheet, a part 11a of the sealant, and a part 9a of the back sheet.

[0088] From the viewpoint of improving the water-stopping property between the hard member 5 and the clamped portion 12, it is preferable that the clamped portion 12 is compressed by being clamped by the hard member 5.

[0089] The compressed state of the clamped portion 12 as described above can be achieved, for example, by manufacturing the solar power generation device 2 so that the thickness of the solar power generation device 2 is greater than the width of the slit 51, and then pushing the clamped portion 12 into the slit 51.

[0090] Furthermore, when the hard member 5 is made of metal, the above-described compressed state of the clamped portion 12 can also be achieved by, for example, inserting the clamped portion 12 into the slit 51 and compressing the hard member 5 so that the width of the slit 51 narrows.

[0091] Furthermore, when the hard member 5 is made of resin, the clamped portion 12 can be inserted into the slit 51 while the hard member 5 is heated, and then the hard member 5 can be cooled to solidify and shrink, thereby achieving the compressed state of the clamped portion 12 as described above.

[0092] When the clamped portion 12 is compressed by the above-mentioned method, as shown in FIG. 3(A), the thickness T1 of the clamped portion 12 clamped by the hard member 5 of the solar power generation device 2 is The clamped portion 12 has a feature that the thickness T1 is smaller than the thickness T2 of the remaining portion 14 of the main body portion 4 that is not compressed. From the viewpoint of preventing the hard member 5 from being destroyed by the reaction force against the compression of the clamped portion 12, it is preferable that the clamped portion 12 is compressed so that the thickness T1 of the clamped portion 12 is 80% or more of the thickness T2 of the remaining portion 14 of the main body portion 4 (corresponding to the thickness of the solar power generation device 2 at the time of manufacture).

[0093] 3(B), in the sandwiched portion 12, a core material 15 made of metal or hard resin may be disposed between a part 7a of the barrier sheet 7 and a part 9a of the back sheet 9, and the part of the sandwiched portion 12 other than the core material 15 may be compressed. In this way, the parts 7a, 9a of the sheets 7, 9 can be strongly pressed against the hard member 5 (the inner surface of the slit) by the pressure of the core material 15, so that the water stopping property of the sandwiched portion 12 can be improved.

[0094] It is not necessarily required to compress the clamped portion 12. For example, after manufacturing the solar power generation device 2 so that the thickness of the solar power generation device 2 is equal to the width of the slit 51, the clamped portion 12 may be pressed into the slit 51 and adhered to the hard member 5 (specifically, the inner surface of the slit 51) in a state in which the clamped portion 12 is not compressed, so that the clamped portion 12 may be clamped by the hard member 5.

[0095] Furthermore, when the hard member 5 is made of resin, it is preferable to provide the hard member 5 with a slip-out prevention means that allows the clamped portion 12 to be inserted into the slit 51 while preventing the clamped portion 12 from slipping out of the slit 51. The slip-out prevention means is, for example, a means having a tapered surface that inclines toward the center of the slit 51 as it approaches the back of the slit 51.

[0096] (Action and effect) According to this embodiment, by using the hard member 5 as the "member attached to the clamped portion 3", it is possible to minimize deformation and damage caused to the "member attached to the clamped portion 3 (hard member 5)" by the external force applied from the clamped portion 3. Therefore, it is possible to support the solar power generation device 2 on the construction material 100 while maintaining the waterproofing property of the solar power generation device 2.

[0097] The support structure 1 of the first embodiment can be modified as shown in FIG. 4 and FIG.

[0098] In the example shown in FIG. 4(A), the backsheet 9 includes a backsheet main body 17, a backsheet sealing portion 18, and a backsheet overlapping portion 19. The backsheet main body 17 constitutes the back surface 8 of the solar power generation device 2. The backsheet sealing portion 18 extends from a part of the outer periphery of the backsheet main body 17 and seals between a part of the outer periphery of the backsheet main body 17 and a part of the outer periphery of the barrier sheet 7. The backsheet overlapping portion 19 extends from the tip of the backsheet sealing portion 18 and is overlapped on the barrier sheet 7. In the example shown in FIG. 4(A), the sandwiched portion 12 includes a part 7a of the barrier sheet 7, a part 11a of the sealant 11, and a part 9a of the backsheet 9, and the part 9a of the backsheet 9 includes a part of the backsheet main body 17, the whole of the backsheet sealing portion 18, and a part or all of the backsheet overlapping portion 19.

[0099] In the example shown in FIG. 4(B), the barrier sheet 7 includes a barrier sheet main body 52, a barrier sheet sealing portion 53, and a barrier sheet overlapping portion 54. The barrier sheet main body 52 constitutes the surface 6 of the solar power generation device 2. The barrier sheet sealing portion 53 extends from a portion of the outer periphery of the barrier sheet main body 52 and seals the gap between a portion of the outer periphery of the barrier sheet main body 52 and a portion of the outer periphery of the back sheet 9. The barrier sheet overlapping portion 54 extends from the tip of the barrier sheet sealing portion 53 and is overlapped on the back sheet 9. In the example shown in FIG. 4(B), the sandwiched portion 12 includes a portion 7a of the barrier sheet 7, a portion 11a of the sealant 11, and a portion 9a of the back sheet 9, and the portion 7a of the barrier sheet 7 includes a portion of the barrier sheet main body 52. The barrier sheet sealing portion 53 and a part or the whole of the barrier sheet overlapping portion 54 are included.

[0100] In the example shown in Figure 5, the main body portion 4 has a sealing edge material 13 around its entire circumference that seals the space between the outer peripheral edge of the barrier sheet 7 and the outer peripheral edge of the back sheet 9, and the clamped portion 12 includes a portion 7a of the barrier sheet 7, a portion 11a of the sealant 11, a portion 9a of the back sheet 9, and a portion 13a of the sealing edge material 13.

[0101] Another embodiment of the present invention will be described below. In the following description, differences from the first embodiment will be described, and the same reference numerals will be used to denote the same parts as the first embodiment, and description thereof will be omitted.

[0102] Second Embodiment Fig. 6(A) is a front view showing a support structure 60 of a solar power generation device 2 according to a second embodiment of the present invention. Fig. 6(B) is a cross-sectional view showing a state in which the support structure 60 according to the second embodiment is cut along line EE in Fig. 6(A).

[0103] The supporting structure 60 according to the second embodiment includes a solar power generation device 2, a first supported member 3A, and a second supported member 3B arranged below the first supported member 3A. The first and second supported members 3A and 3B are rods having the same characteristics as the supported member 3 of the first embodiment (FIGS. 1 to 5).

[0104] The solar power generation device 2 includes a main body 4, a first hard member 5A, and a second hard member 5B, and one end of the main body 4 in the longitudinal direction (the vertical direction in Figs. 6(A) and 6(B)) is constituted by a first clamped part 12A, and the other end of the main body 4 in the longitudinal direction is constituted by a second clamped part 12B. The first and second hard members 5A, 5B have the same characteristics as the hard member 5 of the first embodiment (Figs. 1, 3 to 5). The first and second clamped portions 12A, 12B have the same characteristics as the clamped portion 12 of the first embodiment (FIGS. 1, 3 to 5). The first clamped portion 12A is clamped by the first hard member 5A, and the second clamped portion 12B is clamped by the second hard member 5B, so that the first hard member 5A is connected to one end of the main body portion 4 in the longitudinal direction, and the second hard member 5B is connected to the other end of the main body portion 4 in the longitudinal direction (FIG. 6). 1, and the first and second clamped portions 12A, 12B have similar characteristics to the clamped portion 12 shown in FIG. 1. However, the first and second hard members 5A, 5B may have similar characteristics to the hard member 5 shown in FIGS. 3 to 5, and the first and second clamped portions 12A, 12B may have similar characteristics to the clamped portion 12 shown in FIG. 1.

[0105] In the support structure 60 according to the second embodiment, the first hard member 5A is supported by the first supported member 3A. The second hard member 5B is attached to the second supported member 3B, so that the thick The solar power generation device 2 is supported by the construction material 100 in a state in which it extends in the vertical direction.

[0106] According to this embodiment, the solar power generation device 2 is attached to the two supported members 3A and 3B, so that the state in which the solar power generation device 2 is supported by the construction material 100 can be stably maintained.

[0107] In addition, by appropriately adjusting the installation positions of the first and second supported members 3A, 3B, it is possible to adjust the tension generated in the main body 4 of the solar power generation device 2. In other words, if the supported members 3A, 3B are installed so that the distance between the supported members 3A, 3B in the vertical direction is shortened, the tension generated in the main body 4 can be reduced, and if the supported members 3A, 3B are installed so that the distance between the supported members 3A, 3B in the vertical direction is increased, the tension generated in the main body 4 can be increased. From the viewpoint of preventing damage to the main body 4 and appropriately fixing the main body 4, the tension applied to the main body 4 is preferably set to 10 N / cm or more, more preferably 25 N / cm or more, and even more preferably 50 N / cm or more, and is preferably set to 100 N / cm or less, more preferably 250 N / cm or less, and even more preferably 500 N / cm or less. By setting the tension as described above, flapping due to wind, etc. can be appropriately prevented, and damage to the photovoltaic sheet due to excessive tension can also be prevented.

[0108] The support structure 60 of the second embodiment can be modified as shown in FIGS.

[0109] The modified support structure 60 shown in FIG. 7 comprises a solar power generation device 2, a first supported member 3C, and a second supported member 3D. The first and second supported members 3C, 3D are rods supported by a construction material 100, and the first supported member 3C is positioned above the second supported member 3D. A plurality of holes 101 are formed in the construction material 100 at intervals in the vertical direction, and both the first and second supported members 3C, 3D are supported by the construction material 100 by passing through the holes 101. A first hard member 5A is attached to the first supported member 3C, By attaching the second hard member 5B to the second supported member 3D, the solar power generation device 2 is supported by the construction material 100 in a state in which it extends in the vertical direction.

[0110] In the modified example shown in Figure 7, by changing the hole 101 through which the first and second supported members 3C, 3D pass, the distance between the first supported member 3C and the second supported member 3D in the vertical direction can be changed, and the tension generated in the main body portion 4 can be adjusted (Figure 7(A) shows a state in which the main body portion 4 is slack due to a short distance between the hard members 5A, B, and Figure 7(B) shows a state in which the main body portion 4 is taut due to a long distance between the hard members 5A, B).

[0111] 7, one of the first and second supported members 3C, 3D may be made a bar supported by the construction material 100 by passing it through a hole 101, and the other supported member may be made a bar fixed to a predetermined position of the construction material 100, similar to the supported member 3 shown in Figures 1 and 3 to 5. In this case, by changing the hole 101 through which the one supported member passes, the distance between the first supported member 3C and the second supported member 3D in the vertical direction can be changed, and therefore the tension generated in the main body 4 can be adjusted.

[0112] The modified support structure 60 shown in FIG. 8 includes a solar power generation device 2, and first and second supported members 3E and 3F supported by a construction material 100.

[0113] The first supported member 3E is a bolt screwed into a screw hole 102 formed in the construction material 100, and is disposed above the second supported member 3D. The second supported member 3D is a rod material fixed to the construction material 100, similar to the supported member 3 shown in Figs. 1, 3 to 5. In the modification shown in Fig. 8, a first hard member 5C that clamps the first clamped portion 12A is attached to the first supported member 3E, and a second hard member 5D that clamps the second clamped portion 12B is attached to the second supported member 3F, so that the solar power generation device 2 is supported by the construction material 100 in a state of extending in the vertical direction. The second hard member 5D has the same characteristics as the hard members 5A and 5B shown in Fig. 6.

[0114] As long as the first hard member 5C can be attached to the first supported member 3E, the structures of the first hard member 5C and the first supported member 3E are not particularly limited, but in the illustrated example, the first supported member 3E has a head 61 and a shaft portion 62 having a smaller diameter than the head 61, and a screw groove is formed on the outer surface of the shaft portion 62. The first hard member 5C has a slit 51 into which the first clamped portion 12A is fitted, a slit 63 formed on the opposite side of the slit 51, and a cavity 64 formed between the slit 51 and the slit 63, and the slit 63 communicates with the cavity 64. The first hard member 5C has the head 61 attached so that the shaft portion 62 extends from the slit 63. By housing the head 61 in the cavity 64 and bringing the surface of the head 61 into contact with the inner surface of the cavity 64, the head 61 is attached to the first supported member 3E.

[0115] In the modified example of Figure 8, the distance between the first supported member 3E and the second supported member 3F in the vertical direction can be changed by changing the length to which the first supported member 3E is screwed into the screw hole 102, thereby adjusting the tension generated in the main body portion 4 (Figure 8(A) shows a state in which the main body portion 4 is slack due to a short distance between the supported members 3E, 3F, and Figure 8(B) shows a state in which the main body portion 4 is taut due to a long distance between the supported members 3E, 3F).

[0116] Conversely to the illustrated example, the first supported member 3E may be a rod fixed to the construction material 100, similar to the supported member 3 shown in Figs. 1, 3 to 5, and the second supported member 3F may be a bolt screwed into a screw hole 102 formed in the construction material 100. In this case, the distance between the supported members 3E and 3F in the vertical direction can be changed by changing the length by which the second supported member 3F is screwed into the screw hole 102. Also, both the first and second supported members 3E and 3F may be bolts screwed into the screw hole 102 formed in the construction material 100. In this case, the distance between the supported members 3E and 3F in the vertical direction can be changed by changing the length by which one or both of the supported members 3E and 3F are screwed into the screw hole 102.

[0117] <Modifications of the first and second embodiments> Furthermore, the main body 4 (FIGS. 1 to 8) of the solar power generation device 2 according to the first and second embodiments may have thick portions 71 and thin portions 72 thinner than the thick portions 71 formed alternately in the longitudinal direction of the main body 4, and the power generation unit 10 provided in the thick portions 71, as shown in FIG. 9 (FIG. 9 shows an example in which the support structure 60 in FIG. 8 is modified, but the support structures 1 and 60 shown in FIGS. 1, 3 to 7 can also be modified to have the above-mentioned characteristics). In this way, the stress generated in the main body 4 is locally concentrated in the thin portions 72, and the stress in the thick portions 71 can be suppressed, so that the power generation unit 10 provided in the thick portions 71 can be prevented from being damaged by the stress.

[0118] The modified support structure 60 shown in Figure 9 has the following features 1 to 3, and thus has two thick portions 71, one thin portion 72, and two power generation sections 10, but the numbers of thick portions 71, thin portions 72, and power generation sections 10 can be set to any number.

[0119] Feature 1: The main body 4 of the solar power generation device 2 has a thin portion 72 formed between a first thick portion 71A provided on one side in the longitudinal direction and a second thick portion 71B provided on the other side in the longitudinal direction, and a power generation unit 10 is provided in each of the first and second thick portions 71A, 71B. Feature 2: The first clamped portion 12A formed in the first thick portion 71A is clamped by the first hard member 5C, and the second clamped portion 12B formed in the second thick portion 71B is clamped by the second hard member 5D, thereby connecting the first and second hard members 5C, 5D to the main body portion 4. Feature 3: The solar power generation device 2 is supported by the construction material 100 by attaching first and second hard members 5C, 5D to the first and second supported members 3E, 3F supported by the construction material 100, respectively.

[0120] Furthermore, the supported members 3, 3A, 3B, 3C, 3D, 3E, 3F (FIGS. 1, 3 to 9) of the support structures 1, 60 according to the first and second embodiments can be changed to a supported member 3G shown in FIG. 10 that is supported by a construction material 100 and has a slit member 81 formed with a slit 80 into which the hard members 5, 5A, 5B, 5C, 5D (FIGS. 1, 3 to 9) are fitted (FIG. 10 shows an example of a modification of the support structure 1 in FIG. 1, but the support structures 1, 60 shown in FIGS. 3 to 9 can also be modified to have the above-mentioned characteristics). In this case, by fitting the hard member into the slit 80, the hard member is attached to the supported member, and the solar power generation device 2 is supported by the construction material 100. Fitting the hard member into the slit 80 as described above can be performed, for example, For example, this can be achieved by inserting a hard member into the slit 80 from the opening of the slit 80 at the end of the slit member 81 in the width direction.

[0121] The main body 4 of the solar power generation device 2 according to the first and second embodiments may not include the sealant 11. In this case, the main body 4 may be, for example, a structure in which only the power generation unit 10 is disposed between the barrier sheet 7 and the back sheet 9, and the barrier sheet 7 and the back sheet 9 are bonded to the power generation unit 10, and the sandwiched parts 12, 12A, and In 12B, a portion 11a of the sealant 11 is omitted.

[0122] 1 to 10 show an example in which the solar power generation device 2 is supported on the vertical surface of the construction material 100, but the present invention does not limit the support object for supporting the solar power generation device 2 to the vertical surface of the construction material 100, and the solar power generation device 2 may be supported on a surface of a building inclined with respect to the vertical direction. Also, in FIGS. 1 to 10, an example is shown in which the solar power generation device 2 is supported on the construction material 100 in a state in which the solar power generation device 2 extends in the vertical direction, but the extension direction of the solar power generation device 2 supported on the building is not limited to the vertical direction, and can be appropriately adjusted according to the structure of the building. Even when the solar power generation device 2 is supported on a surface of a building inclined with respect to the vertical direction or when the extension direction of the solar power generation device 2 supported on the building is not vertical, the same action and effect as the above can be obtained by making the solar power generation device 2 and the support structure have the above-mentioned characteristics. [Explanation of symbols]

[0123] 1,60 Support structure 2. Solar power generation equipment 3,3A,3B,3C,3D,3E,3F,3G Supported member 4. Main body of the solar power generation device 5,5A,5B,5C,5D Hard parts 6 Surface of the main body 7. Barrier Sheet 7a Part of the barrier sheet 8 Back of the main unit 9 Backsheet 9a Part of the back sheet 10 Power Generation Section 11 Sealant, 12,12A,12B Clamped part 13 Sealing edge material 14 Remaining part of main body 15 Core material 16 Sealing edge material 17 Back seat body 18 Back sheet sealing part 19 Backsheet polymerization section 50 Through holes in hard materials 51 Slits in hard materials 52 Barrier sheet body 53 Barrier sheet sealing part 54 Barrier sheet polymerization section 71,71A,71B Thick wall part 72 Thin-walled section 80 Slit in supported member 100 Construction Materials 101 Holes in construction materials 102 Screw holes in construction materials

Claims

1. a main body having a power generating unit disposed between a barrier sheet constituting a front surface and a back sheet constituting a rear surface; a hard member that is connected to the main body by clamping a clamped portion including at least a part of the barrier sheet and a part of the back sheet, The solar power generation device is supported by a construction material by attaching the hard member to a supported member supported by the construction material.

2. The main body portion includes a sealing edge material that seals between an outer peripheral edge of the barrier sheet and an outer peripheral edge of the back sheet, The photovoltaic power generation device according to claim 1 , wherein the clamped portion includes a part of the sealing edge material.

3. the backsheet comprises a backsheet main body constituting the back surface, a backsheet sealing portion extending from a part of an outer peripheral edge of the backsheet main body to seal a gap between a part of an outer peripheral edge of the backsheet main body and a part of an outer peripheral edge of the barrier sheet, and a backsheet overlapping portion extending from a tip of the backsheet sealing portion to be overlapped with the barrier sheet, The solar power generation device according to claim 1 , wherein the portion of the backsheet includes a portion of the backsheet main body, the entire backsheet sealing portion, and a portion or the entire backsheet overlapping portion.

4. the barrier sheet comprises a barrier sheet main body constituting the surface, a barrier sheet sealing portion extending from a part of an outer periphery of the barrier sheet main body to seal between a part of the outer periphery of the barrier sheet main body and a part of the outer periphery of the back sheet, and a barrier sheet overlapping portion extending from a tip of the barrier sheet sealing portion to be overlapped with the back sheet, The photovoltaic power generation device according to claim 1 , wherein the portion of the barrier sheet includes a portion of the barrier sheet main body, the entirety of the barrier sheet sealing portion, and a portion or the entirety of the barrier sheet overlapping portion.

5. The photovoltaic power generation device according to claim 1 , wherein the clamped portion is in a compressed state by being clamped by the hard members.

6. The clamped portion includes a core material made of metal or hard resin, The solar power generation device according to claim 1 , wherein the sandwiched portion is compressed in a state in which the core material is disposed between a portion of the barrier sheet and a portion of the back sheet, and portions other than the core material are compressed.

7. The end portions on one side and the other side in the longitudinal direction of the main body are each constituted by the clamped portion, and the clamped portions are clamped by the hard member, thereby connecting the hard member to the end portions on one side and the other side in the longitudinal direction of the main body, The solar power generation device as described in claim 1, wherein the hard member connected to one end of the main body in the longitudinal direction is attached to a first supported member, and the hard member connected to the other end of the main body in the longitudinal direction is attached to a second supported member that is positioned lower than the first supported member.

8. The main body portion has thick portions and thin portions that are thinner than the thick portions alternately formed in the longitudinal direction, The solar power generating device according to claim 1 , wherein the power generating portion is provided in the thick portion.

9. A solar power generation device according to any one of claims 1 to 8, A supported member supported by the construction material, A support structure for a solar power generation device in which the hard member is attached to the supported member, thereby supporting the solar power generation device on the construction material.

10. A first supported member; a second supported member disposed below the first supported member, The solar power generation device is a solar power generation device according to claim 7, the hard member connected to one end of the main body in the longitudinal direction is attached to the first supported member, the hard member connected to the other end of the main body in the longitudinal direction is attached to the second supported member, The support structure for a solar power generation device according to claim 9 , wherein the distance between the first supported member and the second supported member in the up-down direction is changeable.

Images