Structure for installing solar panels, solar panel power generation system, and solar panel power generation method

Abstract

To make it possible to install new solar panels without requiring a large installation space make it possible to generate power using not only the newly installed solar panels but also existing solar panels.SOLUTION: A solar panel installation structure 12 has a first solar panel 18 installed on an installation surface, a second solar panel 20 installed above the first solar panel 18 and allowing light to pass through, and a holding member that holds the second solar panel 20 above the first solar panel 18.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The technology disclosed in this application relates to a solar panel installation structure. [Background technology]

[0002] Patent Document 1 describes a solar cell system 1 that includes a solar cell panel, horizontal and vertical bars on which the solar cell panel is placed, and first and second arms that support the vertical bars via locking members. Patent Document 1 further describes a base that includes an attachment part for attaching the first arm at an angle greater than 0° with respect to the disclosed vertical direction, and for attaching the second arm that is inclined on the opposite side to the first arm at an angle greater than 0° with respect to the vertical direction.

[0003] Patent Document 2 describes a solar power generation system that includes a first solar panel that generates electricity using light in the short wavelength region of sunlight, a concentrator made of a material with infrared absorbing function, and a second solar panel that generates electricity mainly using light in a wavelength region not used for power generation by the first solar panel. In this solar power generation system, light that has passed through the first solar panel is concentrated by the concentrator and irradiated onto the second solar panel to generate electricity. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2015-21332 A [Patent Document 2] JP 2000-156518 A Summary of the Invention [Problem to be solved by the invention]

[0005] For example, when the power generation capacity of solar panels decreases due to aging, it is possible to add and install new solar panels. Even if the power generation capacity of the solar panels has not decreased, it is possible to increase the overall amount of power generation by adding and installing new solar panels. However, if the new solar panels are installed next to the existing solar panels in a planar manner, a large installation space is required in the plan view of the solar panels.

[0006] The techniques described in Patent Documents 1 and 2 do not provide any perspective on increasing the amount of power generated by a solar panel without increasing the installation space for the solar panel.

[0007] In consideration of the above, the present application aims to enable the installation of new solar panels without requiring a large installation space, and to enable power generation using not only newly installed solar panels but also existing solar panels. [Means for solving the problem]

[0008] The solar panel installation structure of a first embodiment has a first solar panel installed on an installation surface, a second solar panel installed above the first solar panel and transmitting light, and a holding member that holds the second solar panel above the first solar panel.

[0009] In this solar panel installation structure, a second solar panel is installed above a first solar panel installed on the installation surface and held by a holding member. The second solar panel transmits light. The light that transmits through the second solar panel reaches the first solar panel, where electricity is also generated. Electricity can be generated by both the first solar panel and the second solar panel. Furthermore, because the second solar panel is installed above the first solar panel, no large installation space is required in plan view for the installation of the second solar panel.

[0010] In a second aspect, in the first aspect, the second solar panel is disposed over the first solar panel.

[0011] By arranging the second solar panel overlapping the first solar panel, it is not necessary to process the installation surface when installing the second solar panel on the installation surface. Since there is no gap between the first solar panel and the second solar panel, the overall height can be lowered and the second solar panel can be prevented from floating up due to wind, etc.

[0012] In a third aspect, in the first or second aspect, the holding member includes an adhesive that bonds the first solar panel and the second solar panel.

[0013] The adhesive allows the second solar panel to be firmly fixed to the first solar panel.

[0014] For example, the adhesive can be disposed in a shape that surrounds the periphery of the first solar panel, thereby fixing the second solar panel all around the periphery of the first solar panel.

[0015] Furthermore, for example, in the case of a rectangular first solar panel, the adhesive can be disposed along two opposing sides of the first solar panel, which makes it possible to absorb any discrepancy in size between the first solar panel and the second solar panel caused by thermal expansion of the first solar panel and the second solar panel.

[0016] In a fourth aspect, in the third aspect, the adhesive is positioned to avoid a light receiving area of ​​the first solar panel.

[0017] The adhesive prevents the substantial light receiving range of the first solar panel from being narrowed, and allows the light receiving range of the first solar panel to be used effectively.

[0018] In a fifth aspect, in the first or second aspect, the holding member includes a clamping tool that clamps the first solar panel and the second solar panel in a thickness direction.

[0019] The clamping tool allows the second solar panel to be easily fixed to the first solar panel.

[0020] In a sixth aspect, in any one of the first to fifth aspects, the first solar panel has a bending rigidity higher than that of the second solar panel.

[0021] Compared to a configuration in which the bending rigidity of the first solar panel is low, bending of the first solar panel is suppressed in a state in which the first solar panel supports the second solar panel.

[0022] In a seventh aspect, in any one of the first to sixth aspects, the second solar panel has a smaller mass per unit area than the first solar panel.

[0023] Compared to a configuration in which the second solar panel is not lightweight, the impact on the first solar panel and the installation surface can be reduced.

[0024] In an eighth aspect, in any one of the first to seventh aspects, the solar panel further includes a support member that supports the first solar panel on the installation surface.

[0025] The support member can support the first solar panel. A configuration can be realized in which it is not necessary to remove and discard the first solar panel including the support member.

[0026] A ninth aspect of the solar panel power generation system includes a first solar panel installed on an installation surface, a second solar panel installed above the first solar panel and transmitting light, a holding member that holds the second solar panel above the first solar panel, and a recovery member that recovers the power generated by the first solar panel and the second solar panel.

[0027] In this solar panel power generation system, a second solar panel is installed above a first solar panel installed on an installation surface and held by a holding member. The second solar panel transmits light. The light that transmits through the second solar panel reaches the first solar panel, which also generates electricity. Electricity can be generated by both the first solar panel and the second solar panel. The electricity generated by the first solar panel and the second solar panel can be recovered by a recovery member. Furthermore, because the second solar panel is installed above the first solar panel, no installation space is required for the installation of the second solar panel.

[0028] In the solar panel power generation method of the tenth aspect, the generated power of a first solar panel installed on an installation surface and the generated power of a second solar panel installed above the first solar panel and transmitting light in the thickness direction are recovered by a recovery member.

[0029] In this solar panel power generation method, the second solar panel transmits light. The light that transmits through the second solar panel reaches the first solar panel, where it also generates electricity. Power can be generated by both the first and second solar panels. The power generated by the first and second solar panels is recovered by a recovery member. Because the second solar panel is installed above the first solar panel, no installation space is required for the installation of the second solar panel. Effect of the Invention

[0030] The technology disclosed herein makes it possible to install new solar panels without requiring a large installation space, and makes it possible to generate power using not only newly installed solar panels but also existing solar panels. [Brief description of the drawings]

[0031] [Figure 1] FIG. 1 is a perspective view showing a solar panel installation structure and a solar panel power generation system according to a first embodiment. [Diagram 2] FIG. 2 is an exploded perspective view showing the solar panel installation structure and the solar panel power generation system according to the first embodiment. [Diagram 3] FIG. 3 is a perspective view showing the solar panel installation structure of the first embodiment in a state during manufacturing. [Figure 4] FIG. 4 is a perspective view showing the solar panel installation structure of the first embodiment in a state during manufacturing. [Diagram 5] FIG. 5 is a side view showing the solar panel installation structure of the first embodiment. [Figure 6] FIG. 6 is a cross-sectional view showing a partially enlarged view of the solar panel installation structure of the first embodiment. [Figure 7] FIG. 7 is a cross-sectional view showing a partially enlarged solar panel installation structure according to the second embodiment. [Figure 8] FIG. 8 is a cross-sectional view showing a partially enlarged solar panel installation structure according to the third embodiment. [Figure 9] FIG. 9 is an exploded perspective view showing a solar panel installation structure and a solar panel power generation system according to the fourth embodiment. [Figure 10] FIG. 10 is a perspective view showing a modified solar panel installation structure and a solar panel power generation system. [Figure 11] FIG. 11 is a perspective view showing a solar panel installation structure and a solar panel power generation system according to the fifth embodiment. [Figure 12] FIG. 12 is an exploded perspective view showing a solar panel installation structure and a solar panel power generation system according to the fifth embodiment. [Figure 13] FIG. 13 is a perspective view showing a solar panel installation structure and a solar panel power generation system according to the sixth embodiment. [Figure 14] FIG. 14 is an exploded perspective view showing a solar panel installation structure and a solar panel power generation system according to the sixth embodiment. [Figure 15] FIG. 15 is a perspective view showing a solar panel installation structure and a solar panel power generation system according to the seventh embodiment. [Figure 16] FIG. 16 is an exploded perspective view showing a solar panel installation structure and a solar panel power generation system according to the seventh embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0032] Hereinafter, an example of an embodiment of the present application will be described in detail with reference to the drawings.

[0033] 1 and 2 show perspective views of a solar panel power generation system 14 to which a solar panel installation structure 12 of a first embodiment is applied.

[0034] The solar panel installation structure 12 of the first embodiment has a mounting base 16, a first solar panel 18, a second solar panel 20, and an adhesive 22. The mounting base 16 is a stand that supports the first solar panel 18. The mounting base 16 is an example of a support member. The mounting base 16 is installed on an installation surface 24. That is, the first solar panel 18 is installed on the installation surface 24 via the mounting base 16. The installation surface 24 may be, for example, the ground or the top surface of a roof of a building. The first solar panel 18 may be installed directly on the installation surface 24 without using the mounting base 16. For example, a concrete foundation may be poured into the ground, and the first solar panel 18 may be installed on this foundation.

[0035] In the example shown in FIG. 2, the mounting base 16 has a lower frame 16A, an upper frame 16B, and four pillars 16C. The lower frame 16A is a rectangular frame-like portion fixed to the installation surface 24. A plurality of pillars 16C (one from each of the four corners in the example of FIG. 2, a total of four) are erected upward from the lower frame 16A. The upper frame 16B is a rectangular frame-like portion on which the first solar panel 18 is placed. The length of the pillars 16C is set so that the upper frame 16B is inclined at a predetermined inclination angle θ (see FIG. 5) with respect to the lower frame 16A. The first solar panel 18 is fixed to the mounting base 16 by a fastener such as a bolt.

[0036] The first solar panel 18 is formed in a rectangular plate shape. In the illustrated example, the first solar panel 18 has one surface (one side) as a light receiving surface. The first solar panel 18 is not limited to a panel having one light receiving surface, and may have both light receiving surfaces, for example. The light receiving surface of the first solar panel 18 has a light receiving range 18B in a rectangular range inside the four sides. The first solar panel 18 generates power by receiving light in the light receiving range 18B. The first solar panel 18 is fixed to the stand 16 with the light receiving surface facing upward.

[0037] In this embodiment, the first solar panel 18 has a predetermined thickness T1 (see FIG. 6). The first solar panel 18 has a predetermined bending rigidity so that the first solar panel 18, when supported by the frame 16, does not bend inadvertently due to gravity or the like.

[0038] The first solar panel 18 is provided with a power supply cable 28. Electricity generated by the first solar panel 18 is collected by the power supply cable 28 and supplied to an external device. The external device includes, for example, a storage battery and an electric device that consumes electric power. The power supply cable 28 is an example of a collection member of the technology of the present disclosure.

[0039] In the illustrated example, the second solar panel 20 is formed in a rectangular plate shape similar to the first solar panel 18. The second solar panel 20 is not limited to a plate shape, and may be a sheet or film shape. One surface of the second solar panel 20 is a light receiving surface. The light receiving surface of the second solar panel 20 is provided with a light receiving range 20B in a rectangular range inside the four sides. The second solar panel 20 generates power by receiving light in the light receiving range 20B. The second solar panel 20 is installed above the first solar panel 18 with the light receiving surface facing upward.

[0040] In this embodiment, the thickness T2 (see FIG. 6) of the second solar panel 20 is thinner than the thickness T1 of the first solar panel 18. Therefore, the first solar panel 18 has a relatively higher bending rigidity than the second solar panel 20. In addition, the mass per unit area of ​​the second solar panel 20 is smaller than the mass per unit area of ​​the first solar panel 18. That is, the second solar panel 20 is lighter than the first solar panel 18.

[0041] The second solar panel 20 is also provided with a power feed cable 30, similar to the first solar panel 18. Electricity generated by the second solar panel 20 is collected by the power feed cable 30 and supplied to external equipment. In the technology disclosed herein, a configuration is achieved in which electric power is collected by both the power feed cable 28 of the first solar panel 18 and the power feed cable 30 of the second solar panel 20, and can be supplied to external equipment.

[0042] The second solar panel 20 is disposed so as to overlap the first solar panel 18. The second solar panel 20 is adhered to the first solar panel 18 by an adhesive 22. The adhesive 22 is an example of a holding member of the disclosed technology.

[0043] 3 and 4, the adhesive 22 is applied in the shape of a rectangular frame along the four sides of the first solar panel 18. That is, the adhesive 22 has a closed rectangular shape when viewed in the normal direction of the light-receiving surface of the first solar panel 18. Note that although the thickness of the adhesive 22 is illustrated in Figs. 5 and 6, the thickness of the adhesive 22 is actually thin, and the second solar panel 20 is in contact with the first solar panel 18.

[0044] In the technique of the present disclosure, the adhesive 22 is applied while avoiding the light receiving area 18B of the first solar panel 18. In other words, the adhesive 22 is disposed so as not to cover the light receiving area 18B of the first solar panel 18.

[0045] In the example shown in FIG. 2 to FIG. 4, the adhesive 22 application portion has a rectangular closed shape as a whole when viewed in the normal direction of the first solar panel 18. When the adhesive 22 application portion has a closed shape like this, an air vent hole may be provided at least in one place. If the air vent hole is provided at the bottom in the vertical direction, it is possible to prevent rainwater from entering through this hole. In addition, a filter may be attached to this hole to prevent foreign matter from entering. Furthermore, the adhesive 22 may be applied along two opposing sides of the four sides of the first solar panel 18. By applying the adhesive 22 along the two opposing sides of the first solar panel 18 in this way, when the first solar panel 18 and the second solar panel 20 thermally expand and cause a size discrepancy between the first solar panel 18 and the second solar panel 20, this discrepancy can be absorbed. For example, in the solar panel installation structure 112 and the solar panel power generation system 114 of the modified example shown in FIG. 10, the adhesive 22 is applied horizontally along the two opposing sides, the upper side and the lower side, of the four sides of the first solar panel 18. Although not shown, the adhesive 22 may be applied vertically along the left and right sides of the first solar panel 18.

[0046] The second solar panel 20 transmits light in the thickness direction. Specifically, the second solar panel 20 transmits light so that the light (sunlight SL) that has passed through the second solar panel 20 reaches the light receiving range 18B of the first solar panel 18 and can generate power in the first solar panel 18. If this condition is satisfied, the wavelength range of the transmitted light may be a part of the wavelength range of visible light. For example, when the peak wavelengths that contribute to power generation are different between the first solar panel 18 and the second solar panel 20, efficient power generation is possible in both the first solar panel 18 and the second solar panel 20 if the second solar panel 20 transmits light in a wavelength range that contributes greatly to power generation in the first solar panel 18. In addition, the "transmission" referred to here does not only refer to the case where light is completely transmitted, but also refers to a light transmittance of 30% or more, preferably 50% or more.

[0047] Next, the operation of this embodiment, a method for manufacturing the solar panel installation structure, and a method for generating power through the solar panel will be described.

[0048] In the solar panel installation method of the present embodiment, as shown in Fig. 3, the first solar panel 18 is already installed on the mounting base 16. That is, the first solar panel 18 is installed on the installation surface 24 via the mounting base 16.

[0049] A second solar panel 20 is installed on the upper side of this first solar panel 18. Specifically, as shown in Fig. 4, an adhesive 22 is applied along the four sides of the first solar panel 18, and the first solar panel 18 and the second solar panel 20 are bonded together by this adhesive 22. Note that the adhesive 22 is applied while avoiding the light receiving area 18B of the first solar panel 18.

[0050] As a result, the second solar panel 20 is disposed overlapping the first solar panel 18. Since sunlight is incident on the light receiving range 20B of the second solar panel 20, power generation is possible in the second solar panel 20. Furthermore, since the second solar panel 20 transmits sunlight SL, the transmitted sunlight SL also reaches the light receiving range 18B of the first solar panel 18. As the sunlight SL is incident on the light receiving range 18B of the first solar panel 18, power generation is also performed in the first solar panel 18. In other words, by installing the second solar panel 20, a configuration in which power is generated by both the second solar panel 20 and the first solar panel 18 is realized as the solar panel power generation system 14.

[0051] Then, the cables supplying power to the external device are set to be both the power supply cable 28 of the first solar panel 18 and the power supply cable 30 of the second solar panel 20. This makes it possible to supply the generated power of both the second solar panel 20 and the first solar panel 18 to the external device.

[0052] The second solar panel 20 is disposed on top of the first solar panel 18. When installing the second solar panel 20 on the installation surface 24, processing of the installation surface 24 may be required, but with the technology disclosed herein, such processing is not necessary. In addition, since there is no gap between the first solar panel 18 and the second solar panel 20, the overall height of the solar panel installation structure 12 can be reduced. In addition, the second solar panel 20 can be prevented from floating up due to wind flowing into the gap between the first solar panel 18 and the second solar panel 20.

[0053] In the first embodiment, the first solar panel 18 and the second solar panel 20 are bonded together by an adhesive 22. The adhesive 22 enables the second solar panel 20 to be firmly bonded to the first solar panel 18.

[0054] Moreover, the adhesive 22 is provided over the entire periphery of the first solar panel 18. That is, the second solar panel 20 can be fixed over the entire periphery of the first solar panel 18.

[0055] The adhesive 22 is applied while avoiding the light-receiving area 18B of the first solar panel 18. That is, sunlight SL heading toward the light-receiving area 18B of the first solar panel 18 is incident on the light-receiving area 18B without being blocked by the adhesive 22. This allows the first solar panel 18 to generate power by effectively using the light-receiving area 18B.

[0056] The bending rigidity of the first solar panel 18 is higher than the bending rigidity of the second solar panel 20. Therefore, compared to a case where the bending rigidity of the first solar panel 18 is lower than the bending rigidity of the second solar panel 20, deflection of the first solar panel 18 in a state where it supports the second solar panel 20 is suppressed.

[0057] The mass per unit area of ​​the second solar panel 20 is smaller than the mass per unit area of ​​the first solar panel 18. That is, the second solar panel 20 is lighter than the first solar panel 18 with a similar area. Therefore, compared to a configuration in which the second solar panel 20 is not lighter, the effect of the load of the second solar panel 20 acting on the first solar panel 18 and the installation surface 24 can be reduced.

[0058] Next, a second embodiment will be described. In the second embodiment, the same elements, members, etc. as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and detailed description thereof will be omitted.

[0059] 7, in a solar panel installation structure 42 of the second embodiment, a bracket 44 is used as a holding member of the technology of the present disclosure instead of the adhesive 22 of the first embodiment. The bracket 44 is an example of a holding member of the technology of the present disclosure, and is also an example of a clamping tool.

[0060] The bracket 44 is a member that has a generally flat U-shape and is formed in an elongated shape as a whole when viewed in the cross section shown in Fig. 7. The bracket 44 is disposed above and below the first solar panel 18 with its longitudinal direction aligned with the width direction of the first solar panel 18.

[0061] The distance between the lower piece 44A and the upper piece 44B of the bracket 44 is slightly narrower than the combined thickness of the upper frame 16B of the mounting base 16, the first solar panel 18, and the second solar panel 20. However, by elastically pushing the upper piece 44B and the lower piece 44A apart, it is possible to sandwich the upper frame 16B, the first solar panel 18, and the second solar panel 20 in the thickness direction.

[0062] The upper piece 44B of the bracket 44 is shaped so as not to cover the light receiving area 18B of the second solar panel 20.

[0063] In the second embodiment configured as described above, it is possible to use the bracket 44 to hold the second solar panel 20 above the first solar panel 18. The bracket 44 can hold the second solar panel 20 above the first solar panel 18 simply by clamping the upper frame 16B, the first solar panel 18, and the second solar panel 20 in the thickness direction, making it easy to install the second solar panel 20.

[0064] Next, a third embodiment will be described. In the third embodiment, the same elements, members, etc. as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and detailed description thereof will be omitted.

[0065] 8, in a solar panel installation structure 52 of the third embodiment, a string member 54 is used as a retaining member of the technology of the present disclosure, instead of the adhesive 22 of the first embodiment and the bracket 44 of the second embodiment. The string member 54 is an example of the retaining member of the technology of the present disclosure.

[0066] The string member 54 is a string-like or tape-like member having a length that allows it to be wound around the upper frame 16B of the frame 16, the first solar panel 18, and the second solar panel 20 when viewed in the cross section shown in Fig. 8. The string member 54 is provided with a fastening member so that it can maintain the annular state wound around the upper frame 16B, the first solar panel 18, and the second solar panel 20 in this manner. Examples of the fastening member include a buckle, a hook-and-loop fastener, an adhesive tape, a stapler, a pin, and the like. Also, the end of the string member 54 may be tied without using these fastening members.

[0067] In the third embodiment configured as described above, it is possible to hold the second solar panel 20 above the first solar panel 18 by using the string member 54. Since the length of the string member 54 wrapped around the upper frame 16B, the first solar panel 18, and the second solar panel 20 can be adjusted, the second solar panel 20 can be held above the first solar panel 18 in accordance with various thicknesses of the first solar panel 18 and the second solar panel 20.

[0068] Next, a fourth embodiment will be described. In the fourth embodiment, the same elements, members, etc. as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and detailed description thereof will be omitted.

[0069] 9, in a solar panel installation structure 62 and a solar panel power generation system 64 of the fourth embodiment, a second frame 66 is used as a retaining member in the technology of the present disclosure instead of the adhesive 22 of the first embodiment, the bracket 44 of the second embodiment, and the string member 54 of the third embodiment. The second frame 66 is also an example of a support member.

[0070] The second mount 66 is formed larger than the mount 16 so as to surround the outside of the mount 16 when viewed in the normal direction of the installation surface 24. Specifically, the lower frame 66A and the upper frame 66B of the second mount 66 are formed into a rectangle larger than the lower frame 16A and the upper frame 16B of the mount 16. In addition, the length of the support 66C of the second mount 66 is set so that the upper frame 66B of the second mount 66 can support the second solar panel 20 above the first solar panel 18. The second solar panel 20 is supported by the second mount 66 above the first solar panel 18 with a small gap between the second solar panel 18 and the first solar panel 18. In practice, there is no gap between the first solar panel 18 and the second solar panel 20, and the second solar panel 20 is arranged overlapping the first solar panel 18.

[0071] In the fourth embodiment configured as described above, it is possible to hold the second solar panel 20 above the first solar panel 18 using the second frame 66. Because the second frame 66 supports the second solar panel 20, it is possible to realize a structure in which the weight of the second solar panel 20 is not applied to the first solar panel 18. Also, in the fourth embodiment, the second solar panel 20 can be installed without removing or discarding the first solar panel 18 and the frame 16, and without requiring a large installation space.

[0072] In the above, an example was given in which the size of the first solar panel 18 when viewed in the normal direction and the size of the second solar panel 20 when viewed in the normal direction are roughly the same. In contrast, as in each of the embodiments shown below, the size of the first solar panel 18 when viewed in the normal direction and the size of the second solar panel 20 when viewed in the normal direction may be different. In each of the embodiments below, the same members, elements, etc. as in the first embodiment are denoted by the same reference numerals as in the first embodiment, and detailed description thereof will be omitted.

[0073] In a solar panel installation structure 72 and a solar panel power generation system 74 of a fifth embodiment shown in Fig. 11, two second solar panels 20 correspond to one first solar panel 18. In the example shown in Fig. 11, the first solar panel 18 and the second solar panel 20 are approximately equal in length (length in a direction perpendicular to the width direction), but the second solar panel 20 is approximately half the width (length in the width direction) of the first solar panel 18. Then, two second solar panels 20 are arranged side by side in the horizontal direction on one first solar panel 18.

[0074] 12, the shape in which the adhesive 22 is applied in the fifth embodiment is a rectangular frame shape along the four sides of the first solar panel 18. Alternatively, as in the modified example shown in FIG. 11, for example, the adhesive 22 may be applied horizontally along two opposing sides, that is, an upper side and a lower side, of the four sides of the first solar panel 18. Furthermore, focusing on the second solar panel 20 instead of the first solar panel 18, the adhesive 22 may be applied vertically at the positions of the left and right sides of the second solar panel 20.

[0075] In a solar panel installation structure 82 and a solar panel power generation system 84 of a sixth embodiment shown in Fig. 13, one second solar panel 20 corresponds to two first solar panels 18. In the example shown in Fig. 13, the first solar panel 18 and the second solar panel 20 are approximately equal in length (length in a direction perpendicular to the width direction), but the second solar panel 20 is approximately twice as long as the first solar panel 18 in width (length in the width direction). Then, one second solar panel 20 is arranged on top of the two first solar panels 18 that are arranged side by side in the horizontal direction.

[0076] In the sixth embodiment, in the example shown in Fig. 14, the adhesive 22 is applied in a rectangular frame shape along the four sides of each of the two first solar panels 18. Alternatively, as in the modified example shown in Fig. 11, the adhesive 22 may be applied laterally along two opposing sides, that is, the upper side and the lower side, of the four sides of the first solar panel 18. Furthermore, by focusing on the second solar panel 20 instead of the first solar panel 18, the adhesive 22 may be applied in a rectangular frame shape along the four sides of the second solar panel 20.

[0077] In a solar panel installation structure 92 and a solar panel power generation system 94 of a seventh embodiment shown in Fig. 15, two second solar panels 20 correspond to three first solar panels 18. In the example shown in Fig. 15, the first solar panel 18 and the second solar panel 20 are approximately equal in length (length in the direction perpendicular to the width direction), but the second solar panel 20 is approximately 1.5 times the width (length in the width direction) of the first solar panel 18. Two second solar panels 20 are arranged on top of the three first solar panels 18 that are arranged side by side in the horizontal direction.

[0078] 16, the adhesive 22 is applied in a rectangular frame shape along the four sides of each of the two second solar panels 20. Alternatively, by focusing on the first solar panel 18 rather than the second solar panel 20, the adhesive 22 may be applied in a rectangular frame shape along the four sides of the first solar panel 10. Furthermore, similar to the modified example shown in FIG. 11, the adhesive 22 may be applied laterally along two opposing sides, that is, the upper side and the lower side, of the four sides of the first solar panel 18.

[0079] When the adhesive 22 is applied as shown in FIG. 16, a part of the adhesive 22 is applied on the light receiving surface (light receiving range 18B) of the first solar panel 18 at the center. That is, a part of the light receiving range 18B of the first solar panel 18 at the center is shaded by the adhesive 22. In this case, the first solar panel 18 at the center may not be used for power generation, and the first solar panels 18 on both sides in the width direction may be used for power generation. When the first solar panel 18 at the center is not used for power generation, for example, the power supply cable 28 of the first solar panel 18 at the center is not connected to an external device, and the power supply cable 28 of the first solar panels 18 on both sides in the width direction may be connected to an external device so that the generated power can be taken out. Of course, even if a shadow is cast on the first solar panel 18 at the center by the adhesive 22, this does not prevent the first solar panel 18 at the center from being used for power generation.

[0080] In addition, in the seventh embodiment, in a configuration in which the adhesive 22 is applied laterally along the upper and lower edges of the first solar panel 18, as in the modified example shown in Figure 11, no part of the adhesive 22 covers the light receiving range 18B of the first solar panel 18.

[0081] In the technology disclosed herein, a second solar panel 20 may be installed on top of the second solar panel 20 installed on the first solar panel 18. In this configuration, two second solar panels 20 are arranged one on top of the other, and the first solar panel 18 can generate power by using sunlight that passes through these two second solar panels 20. Furthermore, if the second solar panel 20 installed on the first solar panel 18 deteriorates, the deteriorated second solar panel 20 may be removed and a new second solar panel 20 may be installed on the first solar panel 18.

[0082] In the technology of the present disclosure, the installation surface 24 to which the solar panel installation structure is applied is not limited to the ground and the roof of a building. For example, the solar panel installation structure may be a fixed structure other than the ground and the roof of a building. Also, the solar panel installation structure may be such that the first solar panel 18 is installed on the installation surface 24 without using the mounting stand 16.

[0083] In the solar panel installation structure according to the technology of the present disclosure, power is generated by solar panels installed using this solar panel installation structure, thereby replacing power generation by burning fossil fuels and reducing CO 2 This has the effect of reducing emissions. [Explanation of symbols]

[0084] 12 Solar panel installation structure 14. Solar panel power generation system 16 Frame (an example of a support member) 18 First Solar Panel 18B First solar panel light receiving range 20 Second solar panel 20B Second solar panel receiving range 22 Adhesive (an example of a holding member) 24 Installation surface 28, 30 Power supply cable 42 Solar panel installation structure 44 Bracket (an example of a clamping tool, an example of a holding member) 52 Solar panel installation structure 54 String member (an example of a retaining member) 62 Solar panel installation structure 64 Solar Panel Power Generation System 66 Second stand (an example of a support member, an example of a holding member) 72 Solar panel installation structure 74 Solar Panel Power Generation System 82 Solar panel installation structure 84 Solar Panel Power Generation System 92 Solar panel installation structure 94 Solar Panel Power Generation System

Claims

1. A first solar panel installed on an installation surface; A second solar panel that is installed above the first solar panel and transmits light; A holding member that holds the second solar panel on an upper side of the first solar panel; A solar panel installation structure having the same.

2. The solar panel installation structure according to claim 1 , wherein the second solar panel is disposed on top of the first solar panel.

3. The solar panel installation structure according to claim 1 or 2, wherein the holding member includes an adhesive that bonds the first solar panel and the second solar panel together.

4. The solar panel installation structure according to claim 3 , wherein the adhesive is disposed so as to avoid a light receiving area of ​​the first solar panel.

5. The solar panel installation structure according to claim 1 or 2, wherein the holding member includes a clamping tool that clamps the first solar panel and the second solar panel in a thickness direction.

6. The solar panel installation structure according to any one of claims 1 to 5, wherein the first solar panel has a higher bending rigidity than the second solar panel.

7. The solar panel installation structure according to any one of claims 1 to 6, wherein the second solar panel has a smaller mass per unit area than the first solar panel.

8. The solar panel installation structure according to any one of claims 1 to 7, further comprising a support member for supporting the first solar panel on the installation surface.

9. A first solar panel installed on an installation surface; A second solar panel that is installed above the first solar panel and transmits light; A holding member that holds the second solar panel on an upper side of the first solar panel; A recovery member that recovers power generated by the first solar panel and the second solar panel; A solar panel power generation system having the above structure.

10. A solar panel power generation method in which the generated power of a first solar panel installed on an installation surface and the generated power of a second solar panel installed above the first solar panel and transmitting light in a thickness direction are recovered by a recovery member.

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