Installation structure of solar cell modules and housing

Abstract

This invention provides a solar battery module installation structure and a dwelling that can reduce manufacturing costs compared to the prior art and have excellent workability.　This invention is configured such that: a support member has a rail section that extends substantially in a vertical direction and is longer than a length of the solar battery module; the solar battery module has a solar battery panel and a frame member; the solar battery panel has a body panel, a terminal box provided on a back surface of the body panel, and a wiring part extending from the terminal box; the frame member has a holding recessed part and a mounting section; the holding recessed part clamps a portion of the body panel and contacts a light receiving surface and the back surface of the body panel; the mounting section is provided on the back surface side of the body panel and attached to the rail section of the support member; the mounting section has a through passage that passes through from inside to outside with respect to the terminal box when the light receiving surface is viewed from the front; and the wiring part passes through the through passage.

Description

Technical Field

[0001] The present invention relates to an installation structure of a solar cell module provided on a wall surface of a building and a house.

Background Art

[0002] In recent years, due to the promotion of renewable energy, houses are being converted into zero-energy houses (hereinafter also referred to as ZEHs). As a representative example of renewable energy, there is a solar power generation system using solar cell modules. As a conventional solar power generation system, for example, there is one in which solar cell modules are installed on the roof surface of a house.

[0003] However, in the case of installing solar cell modules only on the roof surface of a conventional house, a sufficient light-receiving area cannot be secured, and the conversion of the house into a ZEH may not be achieved. Therefore, in recent years, efforts have been made to install solar cell modules not only on the roof surface of conventional houses but also on the wall surfaces of houses to secure the overall power generation capacity (for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, when installing a solar cell module on the wall surface of a building, it is considered that by reducing the height from the wall surface of the building to the light-receiving surface of the solar cell module, a sense of unity with the building can be achieved and the design quality can be improved. On the other hand, if the height from the building wall to the light-receiving surface of the solar cell module is reduced, the space between the back of the solar cell module and the building wall becomes narrower, resulting in extremely limited wiring space.

[0006] Here, some solar cell modules have frames provided on all four sides of the solar cell panel, and these frames have mounting portions that extend along the edges of the solar cell panel on the back side of the solar cell panel (for example, Patent Document 2). When installing solar cell modules, such as those described in Patent Document 2, on the wall of a building, the wiring of the solar cell modules must be routed around the outside of the longitudinal end of the mounting section to avoid the mounting section and connect to other solar cell modules. In other words, in such cases, the wiring between solar cell modules becomes complicated. Furthermore, in such cases, the wiring needs to be longer to bypass the mounting section, which increases manufacturing costs.

[0007] Therefore, the present invention aims to provide a solar cell module installation structure and housing that can reduce manufacturing costs and improve workability compared to conventional methods. [Means for solving the problem]

[0008] One aspect of the present invention for solving the above-mentioned problems is a solar cell module installation structure for installing a solar cell module on the wall surface of a building using a support member, wherein the support member has a rail portion that extends substantially vertically, the length of the rail portion in the vertical direction is greater than or equal to the length of the solar cell module in the vertical direction, the solar cell module has a solar cell panel and a frame member, the solar cell panel has a main panel, a terminal box provided on the back surface of the main panel, and a wiring portion extending from the terminal box, the frame member has a retaining recess and a mounting portion, the retaining recess clamps a part of the main panel and is in contact with the light-receiving surface and the back surface of the main panel, the mounting portion is provided on the back side of the main panel and is attached to the rail portion, the mounting portion has a through portion that penetrates from the inside to the outside with respect to the terminal box when the light-receiving surface is viewed from the front, and the wiring portion passes through the through portion, thus forming a solar cell module installation structure.

[0009] In this context, "building" refers to structures such as houses, offices, warehouses, shops, factories, school buildings, lodgings, and garages. In this context, "effectively vertical" includes not only cases where the direction is perfectly vertical (at a 90-degree angle to the horizontal plane), but also cases where the direction is negligibly inclined relative to the vertical. Specifically, "effectively vertical" allows for inclinations within ±5 degrees of the vertical.

[0010] According to this design, since the wiring passes through the mounting section's penetration point, the wiring can be directly connected to an external power source or another solar cell module without bypassing the mounting section. Therefore, compared to cases where the wiring bypasses the mounting section, the routing of the wiring can be simplified, the length of the wiring can be shortened, and installation time can be reduced. As a result, manufacturing costs can be reduced and workability during manufacturing can be improved compared to cases where the mounting section is bypassed.

[0011] A preferred configuration is that the through portion is formed by a notch or a through hole.

[0012] According to this design, it is easy to form penetrations and position wiring.

[0013] A preferred configuration is that the frame member includes a retaining frame having the retaining recess and a mounting frame having the mounting portion.

[0014] According to this design, since the retaining recess and the mounting portion are provided on separate components, for example, the retaining frame and the mounting frame can be replaced individually. Therefore, maintenance costs can be reduced.

[0015] A more preferred configuration is that the support member has a locking portion, the mounting frame has a panel side wall portion and a support side wall portion that are spaced apart and facing each other on the back side of the main panel, and a connecting wall portion that connects the panel side wall portion and the support side wall portion, the support side wall portion engages with the locking portion, and the through portion is formed in the connecting wall portion.

[0016] According to this design, a penetration point for the wiring is formed in the connecting wall. Therefore, the wiring can pass through almost the shortest distance, further reducing manufacturing costs.

[0017] A preferred configuration is that the frame member is composed of a single component comprising the retaining recess and the mounting portion.

[0018] According to this design, the number of parts can be reduced, improving work efficiency compared to conventional methods.

[0019] One aspect of the present invention is a solar cell module installation structure in which two adjacent solar cell modules are installed on the wall surface of a building by a support member, wherein each of the two solar cell modules has a solar cell panel and a frame member, the solar cell panel has a main panel, a terminal box provided on the back surface of the main panel, and a wiring section extending from the terminal box, the frame member has a retaining recess and a mounting portion, the retaining recess clamps a part of the main panel and is in contact with the light-receiving surface and the back surface of the main panel, and the mounting portion is provided on the back side of the main panel and is attached to the support member The solar cell modules are mounted in a manner in which, when the light-receiving surface is viewed from the front, the mounting portion has a through portion that penetrates from the inside to the outside with respect to the terminal box, the two solar cell modules consist of a first solar cell module and a second solar cell module, the wiring portion of the first solar cell module passes through the through portion of the first solar cell module and further passes through the through portion of the second solar cell module, and the wiring portion of the first solar cell module is connected to the wiring portion of the second solar cell module on the back side of the main panel of the second solar cell module, thus forming a solar cell module installation structure.

[0020] In this configuration, the wiring extending from the terminal box of the first solar cell module passes through its own penetration point, then through the penetration point of the second solar cell module, and connects to the wiring extending from the terminal box of the second solar cell module on the back side of the second solar cell module. Therefore, compared to cases where the wiring bypasses the mounting point, manufacturing costs can be reduced and workability during manufacturing can be improved. In addition, since the wiring is not sandwiched between the first and second solar cell modules, the distance between the first and second solar cell modules can be narrowed, and the number of solar cell modules that can be installed per unit area can be increased.

[0021] A preferred aspect is that the terminal box of the first solar cell module is unevenly distributed on the side of the second solar cell module in the juxtaposition direction of the two solar cell modules, and the terminal box of the second solar cell module is unevenly distributed on the side of the first solar cell module in the juxtaposition direction of the two solar cell modules.

[0022] According to this aspect, the length of the wiring part connecting between the terminal box of the first solar cell module and the terminal box of the second solar cell module can be shortened, and the manufacturing cost can be reduced.

[0023] One aspect of the present invention is a house having a wall surface and the above-described installation structure of the solar cell module, and the installation structure is provided on the wall surface.

[0024] According to this aspect, the manufacturing cost can be reduced and the workability is improved.

Effect of the Invention

[0025] According to the installation structure of the solar cell module and the house of the present invention, the manufacturing cost can be reduced and the workability is improved.

Brief Description of the Drawings

[0026] [Figure 1] It is a perspective view schematically showing the installation structure of the solar cell module of the first embodiment of the present invention. [Figure 2] It is an exploded perspective view of the installation structure of FIG. 1. [Figure 3] It is an exploded perspective view of the solar cell module of FIG. 2. [Figure 4] It is an explanatory view of the solar cell panel of FIG. 3, (a) is a front view of the solar cell panel, and (b) is a rear view of the solar cell panel. [Figure 5] It is an exploded perspective view of the frame member of FIG. 3. [Figure 6] It is a longitudinal sectional perspective view of the solar cell module of FIG. 2 as viewed from the upper side of the front. [Figure 7]Figure 2 is a cross-sectional perspective view of the solar cell module as seen from the lower front side. [Figure 8] Figure 2 is a side view of the solar cell module. [Figure 9] Figure 2 is a perspective view of the solar cell module from the upper rear side. [Figure 10] Figure 2 is a perspective view of the support member. [Figure 11] Figure 1 is an explanatory diagram of the installation procedure for the solar cell module installation structure, and is a perspective view showing the attachment of support members to the wall surface. [Figure 12] Figure 1 is an explanatory diagram of the installation procedure for the solar cell module installation structure, and is a perspective view showing the alignment of the solar cell modules in the lateral direction. [Figure 13] Figure 1 is an explanatory diagram of the installation procedure for the solar cell module installation structure, where (a) is a side view showing the solar cell module tilted relative to the wall, and (b) is a side view showing the solar cell module parallel to the wall. [Figure 14] Figure 1 is a partially broken perspective view of two horizontally adjacent solar cell modules in the installation structure, viewed from the lower front side. [Figure 15] Figure 1 is a perspective view of two horizontally adjacent solar cell modules in the installation structure, seen from the upper rear side. [Figure 16] This is a perspective view of a solar cell module according to a second embodiment of the present invention, viewed from the lower side of the back surface. [Figure 17] Figure 16 is a vertical cross-sectional perspective view of the solar cell module as seen from the lower back side. [Figure 18] Figure 16 is a cross-sectional perspective view of the solar cell module as seen from the upper side of the back surface. [Figure 19] This is a side view of a key part of a solar cell module according to another embodiment of the present invention. [Figure 20] This is a cross-sectional perspective view of a key part of the installation structure for a solar cell module according to another embodiment of the present invention. [Modes for carrying out the invention]

[0027] Embodiments of the present invention will be described in detail below. In the following description, unless otherwise specified, the installation posture shown in Figure 1 will be used as the reference.

[0028] The solar cell module installation structure 1 of the first embodiment of the present invention (hereinafter also simply referred to as installation structure 1) is used to install a plurality of solar cell modules 2 (2a to 2d) on a building wall surface 200 using support members 3, as shown in Figures 1 and 2. That is, the installation structure 1 consists of a plurality of solar cell modules 2a to 2d and support members 3, and when viewed from the front, the solar cell modules 2a to 2d are arranged in a grid pattern vertically and horizontally. The installation structure 1 of this embodiment is mainly used in houses, and is installed on the wall surface 200 of the house, forming part of the exterior appearance of the house.

[0029] As shown in Figure 3, the solar cell module 2 has a solar cell panel 10 and a frame member 11 as its main components.

[0030] The solar panel 10 is a photoelectric conversion panel equipped with solar cells inside, and is capable of converting light energy received in the power generation area 25 into electrical energy. As shown in Figure 4, the solar cell panel 10 mainly consists of a main panel 20, terminal boxes 21a and 21b, and wiring sections 22a and 22b.

[0031] The main panel 20 has solar cells formed on a glass substrate, and the solar cells are sealed with sealing glass or sealing film. As shown in Figure 4, the main panel 20 has a light-receiving surface 23 (first main surface) and a back surface 24 (second main surface), and is a rectangular plate-shaped panel when the light-receiving surface 23 is viewed from the front. As shown in Figure 4(a), the light-receiving surface 23, when viewed from the front, has horizontal sides 26 and 27 extending in the horizontal direction X, and vertical sides 28 and 29 extending in the vertical direction Y, with a power generation region 25 in the center.

[0032] As shown in Figure 4(b), terminal boxes 21a and 21b are located in the central part of the back surface 24 of the main panel 20 and connect the wiring extending from the solar cell inside the main panel 20 to the wiring sections 22a and 22b. The terminal boxes 21a and 21b are located in the central part of the back surface 24 of the main panel 20 and are arranged side by side with a gap between them in the lateral direction X.

[0033] The wiring sections 22a and 22b extend from the terminal boxes 21a and 21b and are wires that connect the solar cells in the main panel 20 to which they are connected, to the solar cells in the main panel 20 of other solar cell modules 2 or to an external power supply. The wiring sections 22a and 22b are wires connected to different electrodes of the solar cell in the main panel 20, respectively, within the terminal boxes 21a and 21b. Specifically, wiring section 22a is a positive electrode wire whose base end is connected to the positive electrode of the solar cell in the main panel 20, and wiring section 22b is a negative electrode wire whose base end is connected to the negative electrode of the solar cell in the main panel 20. The wiring sections 22a and 22b are provided with connector sections 30a and 30b at their tips (the ends opposite to the terminal boxes 21a and 21b), which can be connected to other wiring sections 22b and 22a.

[0034] As shown in Figure 5, the frame member 11 includes a retaining frame 40 and mounting frames 41 and 42 (mounting parts). The retaining frame 40 is a frame that holds the main body panel 20 and is a reinforcing frame that has greater bending rigidity than the main body panel 20. Specifically, the retaining frame 40 is a metal frame made of aluminum. As shown in Figure 3, the retaining frame 40 is a "square" shaped frame when viewed from the front, and extends along each side 26-29 of the main panel 20 so as to surround the power generation area 25. The retaining frame 40 includes horizontal frames 45, 46 and vertical frames 47, 48, as shown in Figure 5.

[0035] As shown in Figures 5 and 6, the horizontal frames 45 and 46 are elongated frames that extend in the lateral direction X along the horizontal sides 26 and 27, and have retaining recesses 50 and spacing maintenance pieces 51.

[0036] As shown in Figure 6, the retaining recess 50 is a recess that holds the vicinity of the vertical Y end of the solar cell panel 10 and protects the end face of the solar cell panel 10, including the horizontal sides 26 and 27. The retaining recess 50 has a "U" shape in cross-section and extends along the horizontal sides 26 and 27, and is composed of a surface-side covering portion 52, a back-side covering portion 53, and an end-face-side covering portion 54.

[0037] The surface-side covering portion 52 is the part that covers the light-receiving surface 23 side of the solar cell panel 10, as shown in Figure 6. The rear-side cover portion 53 is the part that covers the rear side 24 of the solar cell panel 10, and is opposite the front-side cover portion 52 with the solar cell panel 10 in between. The end face cover portion 54 is the part that covers the vertical Y end face of the solar cell panel 10, and connects the ends of the front face cover portion 52 and the back face cover portion 53. That is, the front face cover portion 52 and the back face cover portion 53 are erected in the same direction from the end of the end face cover portion 54 and extend inward (towards the center of the main panel 20).

[0038] As shown in Figure 6, the spacing maintenance piece 51 is a part that secures the installation space for the terminal boxes 21a and 21b of the solar cell panel 10, and is composed of an opposing wall portion 55 and a connecting wall portion 56. The opposing wall portion 55 is a wall portion that faces the back side of the back side covering portion 53, with a gap between them. The connecting wall portion 56 is a wall portion that connects the rear side cover portion 53 and the opposing wall portion 55, and is erected from both the rear side cover portion 53 and the opposing wall portion 55. In other words, the opposing wall portion 55 is erected in the same direction as the rear side covering portion 53 and extends inward (towards the center of the main body panel 20).

[0039] As shown in Figures 5 and 7, the vertical frames 47 and 48 are elongated frames that extend in the vertical direction Y along the vertical sides 28 and 29, and have a retaining recess 70, a spacing maintenance piece 71, and connecting parts 77 and 78.

[0040] As shown in Figure 7, the retaining recess 70 is a recess that holds the vicinity of the lateral X edge of the solar cell panel 10 and protects the end face of the solar cell panel 10, including the vertical sides 28 and 29. The retaining recess 70 has a "U" shape in cross-section and extends along the vertical sides 28 and 29, and is composed of a surface-side covering portion 72, a back-side covering portion 73, and an end-face-side covering portion 74.

[0041] The surface-side covering portion 72 is the part that covers the light-receiving surface 23 side of the solar cell panel 10. The rear-side cover portion 73 is the part that covers the rear side 24 of the solar cell panel 10, and is opposite the front-side cover portion 72 with the solar cell panel 10 in between. The end face cover portion 74 is the part that covers the end face of the solar cell panel 10 in the lateral direction X, and connects the ends of the front face cover portion 72 and the back face cover portion 73. That is, the front face cover portion 72 and the back face cover portion 73 are erected in the same direction from the end of the end face cover portion 74 and extend inward (towards the center of the main panel 20).

[0042] The spacing maintenance piece 71 is a part that secures the installation space for the terminal boxes 21a and 21b of the solar cell panel 10, and is composed of an opposing wall portion 75 (locking wall portion) and a first connecting wall portion 76, as shown in Figure 7. The opposing wall portion 75 is a wall portion that faces the rear side cover portion 73 on the back side of the rear side cover portion 73 with a gap between them, and is also a locking wall portion that engages with the mounting frames 41 and 42. The first connecting wall portion 76 is a wall portion that connects the rear side covering portion 73 and the opposing wall portion 75, and is erected from both the rear side covering portion 73 and the opposing wall portion 75. In other words, the opposing wall portion 75 is erected in the same direction as the rear side covering portion 73 and extends inward (towards the center of the main body panel 20).

[0043] The connecting parts 77 and 78 are provided at the longitudinal ends of the vertical frames 47 and 48, as shown in Figure 5, and are the parts that connect to the ends of the horizontal frames 45 and 46.

[0044] The mounting frames 41 and 42 are mounting parts that are attached to the support member 3, and also serve as reinforcing frames that reinforce the rigidity of the solar panel 10. As shown in Figure 5, the mounting frames 41 and 42 extend along the vertical frames 47 and 48, and it is preferable that their length in the longitudinal direction is at least half the length of the vertical sides 28 and 29 of the main panel 20, and more preferably at least three-quarters of the length. It is preferable that the length of the mounting frames 41 and 42 in the longitudinal direction is shorter than the length of the vertical frames 47 and 48 in the longitudinal direction.

[0045] The mounting frames 41 and 42 have greater bending rigidity than the main panel 20, and specifically, they are metal frames made of metal. As shown in Figure 5, the mounting frames 41 and 42 are elongated frames with a "U" shaped cross-section, and include a panel side wall portion 90, a support side wall portion 91, and a second connecting wall portion 92.

[0046] As shown in Figure 7, the panel side wall portion 90 is an engaging wall portion that is attached by engaging with the opposing wall portion 75 of the vertical frame 47 (or the opposing wall portion 75 of the vertical frame 48). The support side wall portion 91 is a wall portion that faces the panel side wall portion 90 on the back side of the panel side wall portion 90, with a gap between them. The support side wall portion 91 is also an engaging wall portion that engages with the locking piece 101 (see Figure 2) and engaging portion 102 (see Figure 2) of the support member 3. In other words, the support side wall portion 91 functions as a mounting portion for the support member 3. The second connecting wall 92 is a wall that connects the panel side wall 90 and the support side wall 91. That is, the panel side wall 90 and the support side wall 91 are erected in the same direction from both ends of the second connecting wall 92 and extend outward.

[0047] As shown in Figures 5 and 8, the second connecting wall portion 92 is provided with wiring holes 93 (93a, 93b) (through-holes) and notches 94 (94a, 94b) (mounting-side engaging portions). As shown in Figure 8, the wiring holes 93a and 93b are provided in the middle of the longitudinal direction of the mounting frames 41 and 42, and are through-holes that penetrate the second connecting wall portions 92 and 92 in the thickness direction. In other words, when the light-receiving surface 23 is viewed from the front, the wiring holes 93a and 93b are through-holes that penetrate the second connecting wall portions 92 and 92 from the inside to the outside, with the terminal boxes 21a and 21b as the reference. The term "intermediate portion" as used herein refers to the portion in one direction other than the two ends, specifically the portion between those two ends. The same applies hereafter. In this embodiment, the wiring holes 93a and 93b are positioned in the vertical direction Y to correspond to the terminal boxes 21a and 21b, and specifically, they are provided in the central portion of the second connecting wall 92 in the vertical direction Y. As shown in Figure 9, the wiring holes 93a and 93b allow the connector sections 30a and 30b of the wiring sections 22a and 22b, which extend from the terminal boxes 21a and 21b, to pass through. The opening shape of the wiring holes 93a and 93b is not particularly limited. It may be circular as shown in Figure 5, or it may be a polygon such as a triangle, square, or pentagon, or it may be an ellipse or oval.

[0048] The notches 94a and 94b are notches provided at the lower vertical ends of the second connecting wall portions 92, 92 of the mounting frames 41, 42, as shown in Figure 8, and are engaging portions that can engage with the locking portion 132 of the support member 3 (see Figure 10). The notches 94a and 94b have width in the thickness direction of the solar cell panel 10, length in the extension direction of the mounting frames 41 and 42, and depth in the vertical upward direction. The notched portion 94 (94a, 94b), as shown in the enlarged view of Figure 8, is trapezoidal when viewed from the side and comprises a bottom wall portion 95, a first inner wall portion 96 (parallel surface), and a second inner wall portion 97 (inclined surface).

[0049] The bottom wall portion 95 constitutes the bottom of the notch portion 94 and is the wall portion that the end face of the locking portion 132 abuts against when attached to the support member 3. In the installed state, the bottom wall portion 95 constitutes the upper end of the notch portion 94. The first inner wall portion 96 is a vertical wall portion that hangs vertically downward from the front end of the bottom wall portion 95, and is a parallel surface that is parallel to the support surface 129 when the installation structure 1 is completed. The second inner wall portion 97 is a wall portion that extends from the rear end of the bottom wall portion 95 at a predetermined inclination angle θ with respect to the vertical direction. That is, as shown in Figure 8, when viewed from the side, the second inner wall portion 97 has an inclined surface that is inclined at a predetermined inclination angle θ1 with respect to the vertical axis L extending in the vertical direction. The tilt angle θ1 shown in Figure 8 can be appropriately changed by the tilt angle θ2 of the tilted position (see Figure 13), which will be described later, but it is preferably 10 degrees or more, and more preferably 30 degrees or more. The tilt angle θ1 is less than 90 degrees, and more preferably 60 degrees or less. Within this range, when the solar cell module 2 is tilted, the locking portion 132 is less likely to come off the notch portion 94. In the notch 94, the distance between the first inner wall portion 96 and the second inner wall portion 97 gradually widens in the depth direction (from the lower end to the upper end of the mounting frames 41, 42).

[0050] Here, we will explain the positional relationships of each component of the solar cell module 2.

[0051] As shown in Figure 6, the solar cell module 2 has its upper end inserted into a retaining recess 50a of the upper frame 45 in the vertical direction (vertical direction Y), and its lower end attached to a retaining recess 50b of the lower frame 46 (first frame portion). In other words, the upper end surface of the main panel 20 is protected by the upper frame 45, and the lower end surface is protected by the lower frame 46. As shown in Figure 7, in the solar cell module 2, the left lateral end of the main panel 20 is inserted into the retaining recess 70a of the left frame 47 (second frame section) in the left-right direction (lateral direction X), and the right lateral end is inserted into the retaining recess 70b of the right frame 48 (second frame section). In other words, when viewed from the front, the left lateral end surface of the main panel 20 is protected by the left frame 47, and the right lateral end surface is protected by the right frame 48. As can be seen in Figure 5, the connecting parts 77a and 77b provided at the upper ends of the vertical frames 47 and 48 are connected to both ends of the horizontal frame 45, and the connecting parts 78a and 78b provided at the lower ends of the vertical frames 47 and 48 are connected to both ends of the horizontal frame 46. The power generation area 25 of the solar cell panel 10 is exposed from the frame member 11, as shown in Figure 2.

[0052] As shown in Figure 7, the mounting frames 41 and 42 are located on the back surface 24 side of the main panel 20, and the panel side walls 90 and 90 engage with the opposing wall portions 75 and 75 of the vertical frames 47 and 48. The mounting frames 41 and 42 are fixed in this state by fastening elements (not shown) with the surfaces of the panel side walls 90 and 90 that are opposite to the main panel 20 being in surface contact with the surfaces of the opposing wall portions 75 and 75 that are on the main panel 20 side. The notch 94a of the mounting frame 41 overlaps with the notch 94b of the mounting frame 42 when viewed from the side. That is, the notch 94a of the mounting frame 41 is located on the projection plane of the notch 94b of the mounting frame 42 in the lateral direction X.

[0053] As shown in Figures 1 and 2, the support member 3 extends in the vertical direction (vertical direction Y) and is a member that supports the solar cell module 2 against the wall surface 200, and as shown in Figure 10, it comprises rail portions 100a to 100c, a locking piece 101, and an engaging portion 102. Rail sections 100a to 100c are rails that are attached across multiple structural sections 202 (see Figure 11) of the wall surface 200, and are rails that extend in the vertical direction (vertical direction Y). As shown in Figure 10, the rail sections 100a to 100c are provided with a base section 110 and a raised section 111 that is raised relative to the base section 110. The base portion 110 is a part that is attached to the structural body portion 202, and includes front end cover portions 120, 121 that cover the front end surface in the protruding direction of the structural body portion 202, and side cover portions 122, 123 that cover the sides of the structural body portion 202. The raised portion 111 is a part that rises from the base portion 110 and includes a support portion 125 and vertical wall portions 126 and 127. The support portion 125 is the part that constitutes the end face of the raised portion 111 in the direction of elevation. As shown in the enlarged view of Figure 10, the support portion 125 has a support surface 129 that extends substantially vertically at the end in the direction of elevation. As shown in Figure 10, the vertical wall sections 126 and 127 are wall sections erected from the base section 110 and connected to both ends in the width direction of the support section 125. In other words, the support section 125 forms a step with the front end covering sections 120 and 121 of the base section 110, and is continuous in a stepped manner via the vertical wall sections 126 and 127.

[0054] As shown in the enlarged view of Figure 10, the locking piece 101 is attached to the support surface 129 of the support part 125 and is a part that engages with the frame member 11 of the solar cell module 2, and is a receiving fitting that receives the load of the solar cell module 2. The locking piece 101 comprises a fixing portion 130 (connecting portion), a vertical wall portion 131 (connecting portion), and a locking portion 132. The fixing portion 130 is the part that is fixed to the support surface 129 of the support portion 125. The vertical wall portion 131 is a wall portion that rises from the fixing portion 130 in a direction intersecting the fixing portion 130 (in this embodiment, a direction perpendicular to the fixing portion 130). The locking portion 132 is a part that bends upward from the end of the vertical wall portion 131 in the rising direction, forming a step with the fixing portion 130, and is continuous in a stepped manner through the vertical wall portion 131. That is, the locking portion 132 faces the support surface 129 with a gap between them and is parallel to each other.

[0055] The engaging portion 102 is rotatably fixed to the support portion 125 by a fastening element, and the claw portions 140 and 141 engage with the support side wall portion 91 of the mounting frame 41 to lock the solar cell module 2.

[0056] The wall surface 200 constitutes the exterior wall of the building and is a vertical wall that rises substantially vertically (in this embodiment, perpendicular to the horizontal plane) with respect to the floor surface (horizontal plane). As shown in Figure 11, when viewed from the front, the wall surface 200 has multiple structural groups 201a to 201c arranged in the horizontal direction X (left-right direction). The structural groups 201a to 201c are composed of multiple structural sections 202 arranged in a straight line in the vertical direction Y. The structural section 202 is a rectangular prism-shaped projection that protrudes forward from the wall surface 200.

[0057] Next, we will explain a typical construction method for installation structure 1, along with the positional relationships of each component.

[0058] First, as shown in Figure 11, the rail sections 100a to 100c of the support member 3 are placed over and fixed to the structural sections 202 of each structural group 201a to 201c of the wall surface 200. That is, when the wall surface 200 is viewed from the front, the rail sections 100a to 100c are arranged and fixed side by side in the left-right direction (horizontal direction X) so that their extension direction is in the vertical direction (vertical direction Y).

[0059] In this case, as shown in Figure 10, the locking piece 101 is fixed with the fixing portion 130 in surface contact with the support surface 129 of the support portion 125, the vertical wall portion 131 forms the bottom surface, and the locking portion 132 extends vertically upward.

[0060] Next, the locking portion 132 of the locking piece 101 is inserted into the notch 94 of the solar cell module 2 and aligned in the lateral direction X (left-right direction) as shown in Figure 12. Then, if necessary, the solar cell module 2 is tilted relative to the support surface 129 (tilted position) as shown in Figure 13(a), and the wiring portions 22a and 22b extending from the terminal boxes 21a and 21b of the solar cell module 2 are inserted into the corresponding wiring holes 93a and 93b, respectively.

[0061] At this time, the solar cell module 2 is tilted with respect to the wall surface 200, and the locking portion 132 of the locking piece 101 contacts the inclined surface of the second inner wall portion 97 of the notches 94a and 94b, as shown in the enlarged view of Figure 13(a). Furthermore, the support member 3 has a locking portion 132 inserted into a notch 94 to support the solar cell module 2 at a predetermined inclination angle θ2 with respect to the support surface 129. The inclination angle θ2 shown in the enlarged view of Figure 13(a) is 10 degrees or more, and preferably 30 degrees or more. Furthermore, the inclination angle θ2 is less than 90 degrees, and more preferably 60 degrees or less. Within this range, the locking portion 132 is less likely to come off the notch portion 94.

[0062] Next, as shown in Figure 13(b), the solar cell module 2 is rotated toward the wall surface 200 so that it is parallel to the wall surface 200 (support surface 129) (parallel position). The engaging portion 102 of the support member 3, which is in a position along the extension direction of the support member 3, is rotated so that the claw portion 140 engages with the support side wall portions 91, 91 of the mounting frames 41, 42 of the solar cell module 2, and the solar cell module 2 is installed relative to the wall surface 200.

[0063] At this time, the light-receiving surface 23 of the solar cell module 2 is parallel to the wall surface 200, and the first inner wall portion 96 faces the locking portion 132 with a gap between them, as shown in the enlarged view of Figure 13(b).

[0064] Next, we will explain the positional relationships of each component of the installation structure 1.

[0065] The first solar cell module 2a and the second solar cell module 2b, which are adjacent to each other in the lateral direction X, are electrically connected in series or parallel. Specifically, as shown in Figure 15, the wiring section 22b extending from the terminal box 21b of the first solar cell module 2a passes through the wiring hole 93b, and further passes through the wiring hole 93a of the second solar cell module 2b, connecting to the wiring section 22a extending from the terminal box 21a of the second solar cell module 2b on the back surface 24 side of the second solar cell module 2b. As shown in Figure 14, the locking piece 101 of the support member 3 is inserted and engaged across the notch 94b of the mounting frame 42 of the first solar cell module 2a and the notch 94a of the mounting frame 41 of the second solar cell module 2b.

[0066] In the installation structure 1 of this embodiment, as shown in Figure 1, adjacent solar cell modules 2a, 2b (2c, 2d) in the horizontal direction X are modules with the same length in the vertical direction Y, while adjacent solar cell modules 2a, 2c (2b, 2d) in the vertical direction Y are modules with different lengths in the vertical direction Y. Specifically, the length in the vertical direction Y of the lower solar cell modules 2c, 2d is longer than the length in the vertical direction Y of the upper solar cell modules 2a, 2b.

[0067] According to the installation structure 1 of this embodiment, the locking portion 132 of the locking piece 101 of the support member 3 is inserted into the notch 94 of the solar cell module 2 to support the solar cell module 2. Therefore, the vertical load of the solar cell module 2 can be received by the locking piece 101, making it less likely for the solar cell module 2 to fall during assembly and allowing for safe assembly. Furthermore, according to the installation structure 1 of this embodiment, the position of the solar cell module 2 in the height direction relative to the wall surface 200 is determined by the locking piece 101 of the support member 3, making it easy to position the solar cell module 2.

[0068] According to the installation structure 1 of this embodiment, during installation, the solar cell module 2 is tilted relative to the support member 3 along the inclined surface provided on the second inner wall portion 97 of the notch portion 94. This allows a space to be formed between the support surface 129 and the solar cell module 2 while the solar cell module 2 is supported by the support member 3, making it easy to perform maintenance on the terminal boxes 21a and 21b.

[0069] According to the installation structure 1 of this embodiment, the mounting frames 41 and 42 have higher rigidity than the main panel 20 and also serve to reinforce the main panel 20. Therefore, even when subjected to loads such as wind, the main panel 20 is less likely to bend in the direction of extension of the mounting frames 41 and 42, making it less susceptible to damage.

[0070] According to the installation structure 1 of this embodiment, the retaining frame 40 having retaining recesses 50a, 50b, 70a, 70b for holding the main body panel 20, and the mounting frames 41, 42 having support side wall portions 91 that are attached to the support member 3 are separate components. Therefore, the retaining frame 40 and the mounting frames 41, 42 can be replaced independently, reducing maintenance costs.

[0071] According to the installation structure 1 of this embodiment, the panel side walls 90 of the mounting frames 41 and 42 and the opposing wall 75 of the retaining frame 40 are in surface contact and fixed together. Therefore, even if subjected to loads such as wind, the mounting frames 41 and 42 are less likely to detach from the retaining frame 40.

[0072] According to the installation structure 1 of this embodiment, the locking piece 101 of the support member 3 is inserted and engaged across the notch 94b of the mounting frame 42 of the first solar cell module 2a and the notch 94a of the mounting frame 41 of the second solar cell module 2b. Therefore, the number of parts can be reduced.

[0073] According to the installation structure 1 of this embodiment, the solar cell module 2 is supported by a plurality of rail sections 100a, 100b (100b, 100c) that extend substantially vertically to a single wall surface 200. Therefore, the solar cell module 2 is less likely to fall.

[0074] According to the installation structure 1 of this embodiment, each rail section 100a to 100c is connected to a plurality of structural sections 202 arranged vertically on the wall surface 200. Therefore, the support member 3 is less likely to fall from the wall surface 200.

[0075] According to the installation structure 1 of this embodiment, the vertical length of the rail sections 100a to 100c is greater than or equal to the length of the solar cell module 2, the mounting frames 41 and 42 extend along the extension direction of the rail sections 100a to 100c, and the wiring sections 22a and 22b are spatially shielded by the rail sections 100a to 100c or the mounting frames 41 and 42. According to the installation structure 1 of this embodiment, even with this structure, the wiring sections 22a and 22b extending from the terminal boxes 21a and 21b pass through the wiring holes 93a and 93b of the mounting frames 41 and 42 and extend to the outside of the mounting frames 41 and 42. Therefore, the wiring sections 22a and 22b can be directly connected to an external power source or another solar cell module 2 without bypassing the mounting frames 41 and 42. As a result, compared to the case where the wiring sections 22a and 22b are bypassed, the length of the wiring sections 22a and 22b can be shortened, and the installation time can be reduced. Therefore, compared to the case where the wiring sections 41 and 42 are bypassed, manufacturing costs can be reduced and workability during manufacturing can be improved.

[0076] According to the installation structure 1 of this embodiment, the wiring sections 22a and 22b are passed through the wiring holes 93a and 93b, so the approximate positions of the wiring sections 22a and 22b are determined by the wiring holes 93a and 93b, making it easy to position the wiring sections 22a and 22b.

[0077] According to the installation structure 1 of this embodiment, since wiring holes 93a and 93b for passing the wiring sections 22a and 22b are formed in the second connecting wall section 92, the wiring sections 22a and 22b can pass through in almost the shortest distance, thereby reducing manufacturing costs.

[0078] According to the installation structure 1 of this embodiment, as shown in Figure 15, the terminal box 21b of the first solar cell module 2a is biased toward the adjacent second solar cell module 2b in the lateral direction X (parallel installation direction), and the terminal box 21a of the second solar cell module 2b is biased toward the first solar cell module 2a. Therefore, the length of the wiring section 22b extending from the terminal box 21b of the first solar cell module 2a and / or the length of the wiring section 22a extending from the terminal box 21a of the second solar cell module 2b can be shortened, thereby reducing manufacturing costs. According to the installation structure 1 of this embodiment, the wiring sections 22a and 22b are not sandwiched between the first solar cell module 2a and the second solar cell module 2b, the distance between the first solar cell module 2a and the second solar cell module 2b can be narrowed, and the number of solar cell modules 2 that can be installed per unit area can be increased. Furthermore, safety is also enhanced.

[0079] Next, the installation structure 300 of the second embodiment of the present invention will be described. Note that components similar to those in the installation structure 1 of the first embodiment are denoted by the same reference numerals and their descriptions are omitted.

[0080] In the second embodiment of the present invention, the installation structure 300 has a single component comprising the retaining recesses 50a, 50b, 70a, 70b of the retaining frame 40 and the support side wall portions 91, 91 of the mounting frames 41, 42. That is, as shown in Figure 16, the installation structure 300 has a frame member 311, and the frame member 311 has both a function of holding the solar cell panel 10 and a function of attaching it to the support member 3. The installation structure 300 comprises multiple solar cell modules 302 and support members 3. As shown in Figure 16, the solar cell module 302 has a solar cell panel 10 and a frame member 311 as its main components.

[0081] The frame member 311 is a frame that holds the main body panel 20, and is specifically an aluminum metal frame. As shown in Figure 16, the frame member 311 includes horizontal frames 45, 346 (mounting parts) and vertical frames 347, 348 (mounting parts).

[0082] As shown in Figure 17, the horizontal frame 346 is a reinforcing frame that extends horizontally in the X direction along the lower edge 27, and also serves as a mounting part for attaching to the support member 3. The horizontal frame 346 has a retaining recess 50 and a spacing maintenance piece 351.

[0083] The spacing maintenance piece 351 is composed of an opposing wall portion 55 and a connecting wall portion 356. The connecting wall portion 356 is a wall portion that connects the rear side cover portion 53 and the opposing wall portion 55, and is equipped with a notch portion 394 (mounting side engaging portion).

[0084] The notch 394, as shown in Figure 17, is a notch provided at the lower vertical end of the connecting wall 356 and is an engaging portion that can engage with the locking portion 132 of the support member 3. The notch 394 is a notched groove provided along the entire longitudinal direction of the connecting wall 356. The notch 394 has width in the thickness direction of the solar cell panel 10, length in the thickness direction of the connecting wall 356, and depth in the vertical upward direction.

[0085] The notch 394, like the notch 94 in the first embodiment, has a trapezoidal cross-sectional shape and includes a bottom wall portion 95, a first inner wall portion 96, and a second inner wall portion 97.

[0086] As shown in Figure 18, the vertical frames 347 and 348 are reinforcing frames that extend in the vertical direction Y along the vertical sides 28 and 29, and also serve as attachment points for mounting to the support member 3. As shown in Figures 17 and 18, the vertical frames 347 and 348 have a retaining recess 70, a spacing maintenance piece 371, and connecting parts 77 and 78.

[0087] The spacing maintenance piece 371 is composed of an opposing wall portion 75 and a connecting wall portion 376. The connecting wall portion 376 is a wall portion that connects the rear side cover portion 73 and the opposing wall portion 75, and is equipped with wiring holes 493a, 493b and notches 494a, 494b (mounting side engaging portions).

[0088] As shown in Figure 18, the wiring holes 493a and 493b are through-holes located in the middle of the longitudinal direction of the vertical frames 347 and 348, and penetrate the connecting walls 376 and 376 in the thickness direction. The wiring holes 493a and 493b allow the connector sections 30a and 30b of the wiring sections 22a and 22b, which extend from the terminal boxes 21a and 21b, to pass through.

[0089] The notches 494a and 494b are notches provided at the lower vertical end of the connecting wall 376 and are engaging portions that can engage with the locking portion 132 of the support member 3. The notches 494a and 494b have width in the thickness direction of the solar cell panel 10, length in the thickness direction of the connecting wall 376, and depth in the vertical upward direction.

[0090] The notches 494a and 494b, like the notch 94 in the first embodiment, have a trapezoidal cross-sectional shape and include a bottom wall portion 95, a first inner wall portion 96, and a second inner wall portion 97.

[0091] Next, we will explain the positional relationships of each component of the solar cell module 302.

[0092] As shown in Figure 16, the connecting wall portion 356 of the horizontal frame 346 and the connecting wall portions 376, 376 of the vertical frames 347, 348 form the same plane and form the bottom surface of the solar cell module 302. The notches 394 of the horizontal frame 346 and 494a and 494b of the vertical frames 347 and 348 have continuous internal spaces and form a single engagement groove 399 (mounting side engagement portion). That is, when viewed from the side, the horizontal frame 346 and the vertical frames 347 and 348 have overlapping portions at the notches 394 and 494a and 494b, and the engagement groove 399 extends across the connecting wall portion 356 of the horizontal frame 346 and the connecting wall portions 376 and 376 of the vertical frames 347 and 348. Furthermore, the engagement groove 399 has a continuous internal space in the direction of extension and is open to the outside.

[0093] According to the installation structure 300 of the second embodiment, the retaining recesses 50a, 50b, 70a, 70b of the retaining frame 40 of the first embodiment and the support side wall portions 91, 91 of the mounting frames 41, 42 are composed of a single component (frame member 311), thus reducing the number of parts and improving workability compared to the conventional method.

[0094] According to the installation structure 300 of the second embodiment, an engagement groove 399, which is a notched groove, is provided spanning the horizontal frame 346 and the vertical frames 347, 348. Therefore, during construction, the solar cell module 2 can be moved in the direction extending of the engagement groove 399 by temporarily placing the support member 3 with the locking portion 132 of the locking piece 101 inserted into the engagement groove 399. As a result, alignment in the horizontal direction X is easy.

[0095] In the embodiment described above, an inclined surface was provided on the second inner wall portion 97, but the present invention is not limited thereto. As shown in Figure 19, an inclined surface may be provided on the first inner wall portion 96. Furthermore, in the embodiment described above, an inclined surface was provided on the entire surface of the second inner wall portion 97, but the present invention is not limited thereto. An inclined surface may be formed only on a part of the second inner wall portion 97 or the first inner wall portion 96.

[0096] In the embodiment described above, wiring holes 93a and 93b were provided that penetrated the second connecting wall portions 92, 92 in the thickness direction, but the present invention is not limited thereto. A notch 593 (penetration portion) may be provided that extends from the back side to the second connecting wall portions 92, 92, as shown in Figure 20, and penetrates from the inside to the outside with respect to the terminal box 21 when the light receiving surface 23 is viewed from the front.

[0097] In the embodiment described above, two terminal boxes 21a and 21b were provided on the back surface 24 of the solar cell panel 10, but the present invention is not limited thereto. One terminal box 21 may be provided on the back surface 24 of the solar cell panel 10, or three or more terminal boxes 21 may be provided.

[0098] In the embodiment described above, the claws 140 and 141 of the engaging portion 102, together with the support surface 129, clamped the support side wall portion 91 to fix the solar cell module 2. However, the present invention is not limited to this. The support side wall portion 91 may also be fixed to the solar cell module 2 by fastening elements.

[0099] In the embodiment described above, the length in the vertical direction Y of the lower solar cell modules 2c and 2d was longer than the length in the vertical direction Y of the upper solar cell modules 2a and 2b, but the present invention is not limited thereto. The length in the vertical direction Y of the lower solar cell modules 2c and 2d may be the same as or shorter than the length in the vertical direction Y of the upper solar cell modules 2a and 2b.

[0100] In the embodiment described above, the wiring holes 93a, 93b (493a, 493b) were provided in the central part of the second connecting wall portion 92 in the vertical direction Y. However, the present invention is not limited thereto, and the arrangement of the wiring holes 93a, 93b (493a, 493b) may be changed to match the positions of the terminal boxes 21a, 21b. For example, if the terminal boxes 21a, 21b are biased towards the ends in the vertical direction Y, the positions of the wiring holes 93a, 93b (493a, 493b) may also be biased towards the ends to match the positions of the terminal boxes 21a, 21b. Furthermore, in the above-described embodiment, the wiring holes 93a, 93b (493a, 493b) were positioned in the vertical direction Y corresponding to the terminal boxes 21a, 21b, but the present invention is not limited thereto. The wiring holes 93a, 93b (493a, 493b) may be positioned in the vertical direction Y at a location separate from the terminal boxes 21a, 21b.

[0101] In the second embodiment described above, wiring holes 493a and 493b were provided in the connecting walls 376 and 376 of the vertical frames 347 and 348, but the present invention is not limited thereto. For example, when electrically connecting adjacent solar cell modules 2 and 2 in the vertical direction Y, wiring holes 493a and 493b may be provided in the horizontal frames 45 and 346.

[0102] In the embodiments described above, the components can be freely substituted or added between each embodiment, as long as they fall within the technical scope of the present invention. [Explanation of Symbols]

[0103] 1,300 installation structure 2,302 solar modules 2a First solar cell module 2b Second solar cell module 3. Support member 10 Solar Panels 11,311 Frame components 20 Main Panel 21a, 21b Terminal box 22a, 22b wiring section 24 Back side 40 retaining frames 41,42 Mounting frame (mounting part) 70, 70a, 70b retaining recess 90 Panel side wall section 91 Support side wall part 92 Second connecting wall 93,93a,93b,493a,493b Wiring hole (penetration part) 100a~100c Rail section 132 Locking part 200 wall surfaces 346 Horizontal frame (mounting part) 347,348 Vertical frame (mounting part) 593 Notch (through section)

Claims

1. A solar panel installation structure in which solar panels are installed on the wall surface of a building using support members, The support member has a rail portion that extends substantially vertically, The rail portion has a vertical length equal to or greater than the vertical length of the solar cell module. The aforementioned solar cell module includes a solar cell panel and a frame member. The solar cell panel comprises a main panel, a terminal box provided on the back surface of the main panel, and a wiring section extending from the terminal box. The frame member comprises a retaining frame having a retaining recess and a mounting frame having a mounting portion. The retaining recess holds a portion of the main body panel and is in contact with the light-receiving surface and the back surface of the main body panel. The aforementioned mounting portion is provided on the back side of the main body panel and is attached to the rail portion. The mounting portion has a through portion that penetrates from the inside to the outside with respect to the terminal box when the light-receiving surface is viewed from the front, The aforementioned wiring section passes through the through-section and extends between the retaining frame and the rail section, in the installation structure for a solar cell module.

2. The installation structure for a solar cell module according to claim 1, wherein the through portion is formed by a notch or a through hole.

3. The support member has a locking portion, The mounting frame has a panel side wall portion and a support side wall portion that are spaced apart and facing each other on the back side of the main panel, and a connecting wall portion that connects the panel side wall portion and the support side wall portion. The support side wall portion engages with the locking portion, The installation structure for a solar cell module according to claim 1, wherein the through-hole is formed in the connecting wall.

4. A solar panel installation structure in which solar panels are installed on the wall surface of a building using support members, The support member has a rail portion that extends substantially vertically, The rail portion has a vertical length equal to or greater than the vertical length of the solar cell module. The aforementioned solar cell module includes a solar cell panel and a frame member. The solar cell panel comprises a main panel, a terminal box provided on the back surface of the main panel, and a wiring section extending from the terminal box. The frame member has a retaining recess and a mounting portion, and the retaining recess and the mounting portion are made of a single member. The retaining recess holds a portion of the main body panel and is in contact with the light-receiving surface and the back surface of the main body panel. The aforementioned mounting portion is provided on the back side of the main body panel and is attached to the rail portion. The mounting portion has a through portion that penetrates from the inside to the outside with respect to the terminal box when the light-receiving surface is viewed from the front, The aforementioned wiring section passes through the aforementioned penetration section, and this is an installation structure for a solar cell module.

5. A solar panel installation structure in which two adjacent solar panel modules are installed on the wall surface of a building by a support member having a rail section, The two solar cell modules each have a solar cell panel and a frame member, The solar cell panel comprises a main panel, a terminal box provided on the back surface of the main panel, and a wiring section extending from the terminal box. The frame member comprises a retaining frame having a retaining recess and a mounting frame having a mounting portion. The retaining recess holds a portion of the main body panel and is in contact with the light-receiving surface and the back surface of the main body panel. The aforementioned mounting portion is provided on the back side of the main panel and is attached to the support member. The mounting portion has a through portion that penetrates from the inside to the outside with respect to the terminal box when the light-receiving surface is viewed from the front, The two solar cell modules mentioned above consist of a first solar cell module and a second solar cell module. The wiring portion of the first solar cell module passes through the penetration portion of the first solar cell module, through the space between the retaining frame and the rail portion of the first solar cell module, and further passes through the penetration portion of the second solar cell module. A solar cell module installation structure in which the wiring section of the first solar cell module is connected to the wiring section of the second solar cell module on the back side of the main panel of the second solar cell module.

6. The terminal box of the first solar cell module is biased toward the second solar cell module side in the direction in which the two solar cell modules are installed side by side. The solar cell module installation structure according to claim 5, wherein the terminal box of the second solar cell module is biased toward the first solar cell module side in the direction in which the two solar cell modules are installed side by side.

7. The wall surface and the solar cell module installation structure described in any one of claims 1 to 6, A house in which the aforementioned mounting structure is provided on the aforementioned wall surface.

Images