WO2017010271A1 - Solar cell module and installation structure therefor - Google Patents

Abstract

Provided are: a solar cell module with which a solar cell panel is unlikely to break due to bending or the like and in which integration strength between a reinforcement crosspiece and the solar cell panel is high when compared to conventional products; and an installation structure for the solar cell module. The present invention is provided with a solar cell panel having at least two opposing sides, a pair of frame members that hold the two opposing sides of the solar cell panel, and a reinforcement crosspiece that connects the pair of frame members. Sides other than the two opposing sides of the solar cell panel are mostly or entirely directly visible when viewed from the light receiving surface side. The pair of frame members each have a holding part that holds an end of the solar cell panel, and a connection part that connects to the reinforcement crosspiece. The holding part covers at least an end surface of the solar cell panel. The reinforcement crosspiece extends so as to span over the two opposing sides when viewed from the reverse surface side. Furthermore, the reinforcement crosspiece is configured to be fastened to each of the connection parts of the pair of frame members by fastening elements.

Description

Solar cell module and installation structure thereof

The present invention relates to a solar cell module and its installation structure.

Conventionally, a so-called frameless solar cell module in which no frame is attached around the solar cell panel is known. Since this frameless solar cell module does not provide a frame around the solar cell panel, the frame is not visible from the light receiving surface side and has an excellent appearance.

However, since the frameless solar cell module does not have a frame on the solar cell panel, the shape is maintained by the rigidity of the solar cell panel itself. Therefore, there is a problem that it is difficult to ensure mechanical strength against wind load and snow load. Moreover, if this mechanical strength is insufficient, the solar cell panel may not be able to endure the rigidity and may be damaged.

Therefore, for example, there is Patent Document 1 as a measure for reinforcing the rigidity of such a frameless solar cell module. In the solar cell module described in Patent Document 1, two support members are attached to the back surface side of the solar cell panel with an adhesive to integrate the solar cell panel and the support member, and the rigidity of the solar cell panel is reinforced by the support member. is doing. Moreover, since the solar cell module of patent document 1 provides a supporting member in the back surface side of a solar cell panel, it is hard to see from the light-receiving surface side in the installed state, and aesthetics are not impaired by presence of a supporting member.

JP 2011-109072 A

However, the solar cell module described in Patent Document 1 is attached so that two support members extending in a straight line are parallel to each other, and the two support members are reinforced only in one direction. That is, although these support members can reinforce the solar cell panel with respect to the bending of the support member in the longitudinal direction, almost no reinforcing effect of the solar cell panel can be expected with respect to the bending of the support member in the juxtaposition direction. Therefore, there is a possibility that the solar cell panel may be damaged when the support member is bent in the parallel arrangement direction such as between the support members.
The solar cell module described in Patent Document 1 is a reinforcing portion of the solar cell panel when a load such as snow is applied to the solar cell panel, and stress is concentrated in the vicinity of the end of the support member. There is a case. Therefore, the vicinity of the portion where the solar cell panel support member is attached may be damaged.

Therefore, the present invention is a solar cell module that reinforces a solar cell panel with a reinforcing bar, and the solar cell module is less likely to be damaged by bending or the like, and the integrated strength of the reinforcing bar and the solar cell panel is high. It aims at providing the installation structure of the solar cell module using the solar cell module.

One aspect of the present invention for solving the above-described problem is a solar cell module having a light receiving surface on one side, and a solar cell panel having at least two opposite sides, and two opposite sides of the solar cell panel. A pair of frame members that hold a pair of frame members, and reinforcing bars that connect the pair of frame members, and when the side other than the two opposite sides of the solar cell panel is viewed from the light receiving surface side, All are directly visible, and each of the pair of frame members includes a holding portion that holds an end portion of the solar cell panel and a connection portion that connects to the reinforcing bar, and the holding portion includes at least the sun The reinforcement bar covers an end surface of the battery panel, and the reinforcement bar extends across the two opposite sides when viewed from the back side. A solar cell module which is fastened to the respective connection portions of the pair of frame members.

The “most part” here means a part of 80% or more relative to the whole standard. That is, the “most part of the side” means a part of 80% or more of the whole side.
The “fastening element” here is a superordinate concept such as a nail, a screw, and a hook. Includes temporary fastening elements such as screws.

According to this aspect, when viewed from the light receiving surface side, the frame member is attached to two opposite sides of the solar cell panel, and the remaining side is not covered with the frame member on the light receiving surface side, Most or all of them are directly visible. Therefore, the solar cell module is excellent in aesthetics when viewed from the light receiving surface side.
According to this aspect, the holding portions of the pair of frame members cover the end surfaces belonging to the two opposite sides of the solar cell panel to hold the solar cell panel, and the reinforcing bars are connected between the connection portions of the pair of frame members. . The pair of frame members and the reinforcing bar are physically fixed by fastening elements. Therefore, the integrated strength of the reinforcing bar and the solar cell panel can be increased as compared with the conventional case.
Moreover, according to this aspect, since the extending direction of the frame member and the extending direction of the reinforcing bar intersect each other, both the vertical and horizontal directions of the solar cell panel can be reinforced. Therefore, the stress generated in the solar cell panel can be suppressed and the solar cell panel can be prevented from being damaged. Furthermore, even if a load such as snow is applied to the solar cell panel and stress occurs in the glass near the longitudinal end of the reinforcing bar, it can be released by the frame member, and the end of the solar cell panel is damaged. Can be prevented.

A preferred aspect is that the holding portion has a holding recess extending in a groove shape, and an end portion of the solar cell panel is inserted into the holding recess to hold the solar cell panel.

According to this aspect, the solar cell panel can be firmly held by the frame member.

In the above-described aspect, it is preferable that the pair of frame members are long and cover the solar cell panel over most or all of the two opposing sides.

In a preferred aspect, the pair of frame members are long and cover the solar cell panel over the entire two opposite sides, and the longitudinal ends of the pair of frame members are It protrudes from the solar cell panel.

According to this aspect, the end portions of the pair of frame members protrude from the solar cell panel. That is, since the pair of frame members covers and protects the corners to which the two opposite sides of the solar cell panel belong, the corners of the solar cell panel can be prevented from being lost due to contact during construction, Easy to install.

In a preferred aspect, the connection portion and the reinforcing bar have an overlapping portion in the longitudinal direction of the reinforcing bar, and the connecting part and the reinforcing bar are integrated by inserting the fastening element in the longitudinal direction of the reinforcing bar. It has been done.

According to this aspect, the fastening member is inserted in the longitudinal direction of the reinforcing bar, and the frame member and the reinforcing bar are integrated. That is, since the fastening element is inserted in a direction intersecting with the bending direction of the solar cell panel, the fastening element is hardly detached due to the bending of the solar cell panel or the like.

In a preferred aspect, the holding portion has a back surface side covering portion that covers the back surface side of the solar cell panel, and the connection portion has a standing wall portion erected with respect to the back surface side covering portion, The standing wall portion has an insertion hole through which the fastening element can be inserted, the reinforcing bar has a fastening receiving portion that can be fastened to the fastening element, and the fastening element is inserted through the insertion hole and fastened. That is, it is fastened with the receiving part.

¡According to this aspect, it is easy to attach the reinforcing bar to the frame member.

A more preferable aspect is that the standing wall portions of the pair of frame members are opposed to each other with a predetermined interval, and a part of the reinforcing bar is fitted between the standing wall portions of the pair of frame members. is there.

According to this aspect, the reinforcing bar and the frame member are fitted together by fitting a part of the reinforcing bar between the standing wall portions. Therefore, it is possible to prevent the reinforcing bar from being detached from the solar cell panel. Further, it is possible to prevent the displacement of the reinforcing bar in the longitudinal direction.

In a preferred aspect, the reinforcing bar has a fastening receiving portion that can be fastened to the fastening element, and the frame member has a surface of a conductive core material coated with an insulating layer, and the frame member In the connecting portion, there is an exposed portion where the core material is exposed from the insulating layer, and the fastening element is a conductor and is fastened to the fastening receiving portion of the reinforcing bar in contact with the exposed portion. The reinforcing bar and the frame member are electrically connected by the fastening element.

According to this aspect, since the reinforcing bar and the frame member are electrically connected by the fastening element, and the reinforcing bar and the frame member have the same potential, it is not necessary to connect the ground to the reinforcing bar and the frame member. It can be grounded by connecting a ground to at least one of the frame members.

A preferred aspect is that a space is formed between the solar cell panel and the reinforcing bar, and an elastic adhesive member is disposed in the space.

According to this aspect, since the adhesive member having elasticity is arranged between the reinforcing bar and the solar cell panel, the adhesive member works as a buffer material, and when the solar cell panel receives an impact from the outside, It can prevent that a solar cell panel breaks more.

In the above aspect, a gap may be formed between the solar cell panel and the frame member, and an elastic second adhesive member may be disposed in the gap.

According to this aspect, since the second adhesive member having elasticity is disposed between the frame member and the solar cell panel, the second adhesive member functions as a buffer material, and the solar cell panel receives an impact or the like from the outside. Can prevent the solar cell panel from being damaged.

A preferred aspect is that a plurality of reinforcing bars for connecting the pair of frame members are provided, and at least two reinforcing bars are distributed in a planar shape and are spaced apart in parallel.

According to this aspect, since the plurality of reinforcing bars are distributed and reinforced in a planar shape, the rigidity of the solar cell panel can be further increased.

One aspect of the present invention is a solar cell module installation structure in which the above solar cell module is fixed to a gantry, wherein the gantry includes a rail member, and the reinforcing bar is elongated. The solar cell module has a projecting portion that projects from the frame member when viewed from the light receiving surface side, and the projecting portion is attached to the rail member directly or via another member. This is the installation structure.

According to this aspect, since it can be attached to the rail member at the protruding portion of the reinforcing bar, the reinforcing bar can function not only as a bar for reinforcing the rigidity of the solar battery panel but also as a mounting bracket. . Therefore, the solar cell module can be easily attached to the gantry.

In a more preferred aspect, the gantry has a plurality of rail members, and at least two rail members are separated from each other at a predetermined interval, and the reinforcing bars are arranged at both ends when viewed from the light receiving surface side. The two overhanging portions are formed by projecting from the pair of frame members, and the two overhang portions are fixed to the two rail members in the solar cell module, and the two rail members Both ends are supported.

According to this aspect, since the solar cell module can be fixed to the gantry by attaching the protruding portion of the solar cell module to the rail member, the gantry can be mounted without using a mounting bracket or the like for attaching the solar cell module. A solar cell module can be installed.

In a more preferred aspect, the gantry supports the solar cell module in an inclined manner so that the light receiving surface is at a predetermined angle, and the reinforcing bar is a hollow body, and the solar beam module is provided in the inside thereof. An internal space communicating with the outside is provided in the inclination direction of the battery module, and the internal space of the reinforcing bar is open upward in the vertical direction at the two projecting portions.

According to this aspect, rain or the like can pass through the internal space of the reinforcing bar from one overhanging part and escape from the other overhanging part. Etc. Therefore, deterioration (corrosion) of the reinforcing bar due to salt or dirt can be prevented.

In a preferred aspect, the rail member extends in a predetermined direction, and the reinforcing bar is attached by a second fastening element, and the reinforcing bar has an insertion hole in the projecting portion. The insertion hole is a long hole extending in the extending direction of the rail member, and the second fastening element is inserted through the insertion hole and fixes the reinforcing bar to the rail member. is there.

According to this aspect, since the insertion hole is a long hole extending in the extending direction of the rail member, the position adjustment in the extending direction of the rail member can be performed with the second fastening element temporarily tightened. Moreover, a rail member and a solar cell module can be fixed to a specific position by carrying out the final fastening of the 2nd fastening element.

In a preferred aspect, the gantry supports the solar cell module in an inclined manner so that the light receiving surface is at a predetermined angle, and the pair of frame members are arranged so that the solar cell module is inclined in the inclination direction of the solar cell module. It is facing the battery panel.

According to this aspect, the frame member is attached in a direction orthogonal to the inclination direction, and the reinforcing bar is attached in the inclination direction.

In a preferred aspect, the gantry includes the solar cell module and another solar cell module arranged in parallel in the extending direction of the rail member, and is fixed between the solar cell module and the other solar cell module. In other words, a gap is formed.

According to this aspect, since a gap is formed between the solar cell modules adjacent to each other in the extending direction of the rail member, even when water accumulates on the solar cell module due to rain or the like, it accumulates on the solar cell module. A puddle can escape from the gap.

According to the solar cell module and the installation structure thereof of the present invention, the solar cell panel is not easily damaged by bending or the like, and the integrated strength of the reinforcing bar and the solar cell panel is high.

It is the perspective view which showed typically the installation structure of the solar cell module of 1st Embodiment of this invention. It is a disassembled perspective view of the installation structure of the solar cell module of FIG. It is the perspective view which looked at the solar cell module of FIG. 2 from the back surface side. It is a disassembled perspective view of the solar cell module of FIG. It is a partially broken perspective view of the solar cell module of FIG. FIG. 4 is a cross-sectional view taken along the line AA of the solar cell module in FIG. 3. It is the end elevation which looked at the solar cell module of Drawing 4 from the longitudinal direction of the reinforcing bar. It is a disassembled perspective view of the solar cell panel of FIG. It is a perspective view of the frame member of FIG. It is a principal part enlarged view of the reinforcing bar of FIG. FIG. 11 is a BB cross-sectional view of the reinforcing bar in FIG. 10.

Hereinafter, embodiments of the present invention will be described in detail.

The solar cell module installation structure 1 (hereinafter also simply referred to as installation structure 1) of the first embodiment of the present invention is used as a part of a large-scale industrial solar cell system referred to as a so-called mega solar. Is.
As shown in FIG. 1, the installation structure 1 is for installing a solar cell module 3 on a ground 100 such as an idle land, and is mainly composed of a gantry 2 and a plurality of solar cell modules 3. Yes.

The gantry 2 is fixed by being inclined with respect to the ground 100 so that the angle of the light receiving surface 20 of the solar cell module 3 becomes a predetermined angle. The inclination angle of the light receiving surface 20 of the solar cell module 3 is preferably 3 to 35 degrees. In the present embodiment, the inclination angle of the light receiving surface 20 is about 5 degrees.

As shown in FIG. 2, the gantry 2 includes a plurality of fixed units 4 having different heights from the ground 100.
The fixed unit 4 includes a plurality of support members 5 and rail members 6 that connect these support members 5.
The column member 5 is a column that extends linearly from the ground 100 in the vertical direction, and is a part that supports the rail member 6. A part of the column member 5 is embedded in the ground 100 and is fixed in an upright posture with respect to the ground 100.
The rail member 6 is a rail for fixing the solar cell module 3, and is a long plate extending in the direction in which the column members 5 are arranged side by side.
The rail member 6 is connected to the upper ends of the plurality of support members 5 and supported by the plurality of support members 5 so as to be parallel to the ground 100.
The rail member 6 includes a plurality of fixing holes 7 for fixing the solar cell module 3 by the fixing member 9. The fixing hole 7 is an insertion hole through which the fixing member 9 can be inserted, and is a through hole penetrating in the member thickness direction.

As can be seen from FIGS. 3 and 4, the solar cell module 3 includes, as main components, a solar cell panel 10, a first frame member 11, a second frame member 12, a first reinforcing bar 15, a second reinforcing bar 16, The adhesive member 13 and the fastening elements 17 and 18 are provided.

The solar cell panel 10 mounts a solar cell which is a photoelectric conversion device that converts light into electric energy.
The solar cell panel 10 is a quadrangular plate-like panel, and has a light receiving surface 20 on one side thereof. The solar cell panel 10 has a rectangular shape and a short side of about 1 m, which is larger than a general household solar cell panel.
As shown in FIG. 8, the solar cell panel 10 is electrically connected to a solar cell body 21 in which a photoelectric conversion element 25 is interposed between two glass substrates 23 and 24, and the photoelectric conversion element 25 of the solar cell body 21. A terminal box 22 having terminals connected to the terminal is provided.
The photoelectric conversion element 25 has a pn junction structure in which a p-type semiconductor layer and an n-type semiconductor layer are joined between a pair of electrode layers, or a p-type semiconductor layer, an i-type semiconductor layer, and an n-type semiconductor layer in this order. It has a joined pin junction structure.
The glass substrate 24 includes a terminal hole 29 in the vicinity of the center thereof.
The terminal hole 29 is a hole through which a wiring (not shown) for connecting the terminal box 22 and the electrode layer of the photoelectric conversion element 25 is inserted, and is a through hole penetrating the glass substrate 24 in the member thickness direction.

Further, as shown in FIG. 8, the solar cell main body 21 has, as its sealing structure, a first sealing material 26 stacked on the photoelectric conversion element 25 and a second sealing that surrounds the periphery of the photoelectric conversion element 25. A material 27 and a third sealing material 28 for closing the terminal hole 29 are provided.
The first sealing material 26 seals the photoelectric conversion element 25 together with the glass substrate 23. Specifically, the first sealing material 26 is a sealing film and / or a sealing sheet.
The second sealing material 27 is a sealing material that seals the space between the glass substrates 23 and 24, and is also an adhesive that bonds the glass substrates 23 and 24.
The second sealing material 27 is formed in an annular shape (endless shape) along the peripheral ends of the glass substrates 23 and 24, and can seal the inner space together with the glass substrates 23 and 24.
The third sealing material 28 is a sealing material that blocks a gap between a wiring (not shown) connecting the terminal box 22 and the photoelectric conversion element 25 and the terminal hole 29.

The terminal box 22 is a member that collects electricity generated by the photoelectric conversion element 25 of the solar cell main body 21 through wiring (not shown) and takes it out from the cables 41 and 42 as in the known terminal box. .

The frame members 11 and 12 are frames that reinforce the rigidity of the solar cell panel 10 as shown in FIG. As can be seen from FIGS. 4 and 9, the frame members 11 and 12 have a cross-sectional shape of “F” and extend linearly along the two opposite sides 85 and 86 of the solar cell panel 10. It is a scale.

As shown in FIG. 9, the frame members 11 and 12 include a holding part 30 and a connection part 31 (standing wall part).
As shown in FIG. 6, the holding portion 30 is a portion that holds the end portion of the solar cell panel 10, and has a “U” -shaped cross section.
The holding unit 30 includes a light receiving side cover 32, a back side cover 33, and an end surface side cover 35 connecting the light receiving side cover 32 and the back side cover 33.
The light receiving side covering portion 32 is a portion that covers the surface on the light receiving surface 20 side of the solar cell panel 10.
The back surface side covering portion 33 is a portion that covers the back surface of the solar cell panel 10. The back surface side cover portion 33 is disposed at a position spaced apart from the light receiving side cover portion 32 by a predetermined distance in the thickness direction of the solar cell panel 10.
The end surface side covering portion 35 is a portion that covers the end surface of the solar cell panel 10. The end surface side cover portion 35 is erected with respect to the light receiving side cover portion 32, and is further erected with respect to the back surface side cover portion 33. The end surface side cover portion 35 of the present embodiment stands upright with respect to both the light receiving side cover portion 32 and the back surface side cover portion 33. That is, the end surface side cover portion 35 is a wall portion rising from the light receiving side cover portion 32 and the back surface side cover portion 33.

From another viewpoint, as shown in FIG. 9, the holding portion 30 is a groove-like holding concave portion extending in the longitudinal direction by the light receiving side covering portion 32, the back surface side covering portion 33, and the end surface side covering portion 35. 36 is formed.
The thickness of the holding recess 36 is slightly larger than the thickness of the solar cell panel 10, so that the end of the solar cell panel 10 can be inserted with ease.

As shown in FIG. 9, the connection portion 31 is a long plate-like portion extending linearly, and rises in a direction away from the back surface side cover portion 33 of the holding portion 30 with respect to the end surface side cover portion 35. It is a standing wall. That is, the connecting portion 31 is a rib that is erected in the thickness direction of the solar cell panel 10 from the back surface side covering portion 33 of the holding portion 30.
The connection part 31 is orthogonal to the back surface side cover part 33, and the connection part 31 and the back surface side cover part 33 have an “L” shape when viewed from the side. That is, the connecting portion 31 is continuous with the end face side covering portion 35 in a straight line.
The connection part 31 has the insertion hole 37 (insertion hole 38) which can insert the fastening element 17 (fastening element 18) in the intermediate part of a longitudinal direction so that FIG. 4, FIG. 9 can read.
Here, the “intermediate portion in the longitudinal direction” refers to a portion other than the end portion in the longitudinal direction.
The insertion hole 37 (insertion hole 38) is a through hole extending in the member thickness direction of the connection portion 31, and is a hole larger than the outer diameter of the shaft portion 81 of the fastening element 17 (fastening element 18).

Further, as shown in the enlarged view of FIG. 6, the frame members 11 and 12 are obtained by coating an insulating layer 46 on the surface of a metal core member 45. In other words, the insulating layer 46 prevents the metal core material 45 from conducting in the portion that comes into contact with the solar cell panel 10.

The reinforcing bars 15 and 16 are reinforcing members that reinforce the back surface side of the solar cell panel 10, and are also connecting members that connect the frame members 11 and 12 as shown in FIG.
As can be seen from FIGS. 4 and 10, the reinforcing bars 15 and 16 are metal rod-like members extending in a predetermined direction, and are cylindrical bodies having a quadrangular annular cross section. That is, the reinforcing bars 15 and 16 are hollow bodies. Further, as shown in FIG. 11, the cross section orthogonal to the longitudinal direction of the reinforcing bars 15, 16 has a space 52 at the center and surrounds the space 52 so that the panel side wall 53 and the back side wall are surrounded. The part 54 and the side wall side parts 55 and 56 are formed. That is, the space 52 is an enclosed space surrounded by the panel side wall portion 53, the back side wall portion 54, and the side surface side wall portions 55 and 56, and is an internal space of the reinforcing bars 15 and 16.

The panel side wall part 53 is a wall part facing the back surface (surface opposite to the surface on the light receiving surface 20 side) of the solar cell panel 10 as shown in FIG. As can be read from FIGS. 10 and 11, the panel side wall 53 has fastening receiving portions 57 and 58 that can be fastened to the fastening elements 17 and 18 on the surface on the space 52 side.
The fastening receiving portions 57 and 58 are cylindrical portions having a substantially “C” cross section, and have fastening holes 65 and 66 that can be fastened to the fastening elements 17 and 18 at the center.
The fastening holes 65 and 66 are screw holes threaded on the wall surface. The fastening holes 65 and 66 extend in the longitudinal direction of the reinforcing bars 15 and 16, and can be screwed with the shaft portions 81 and 81 of the fastening elements 17 and 18.

The back side wall part 54 is a wall part facing the panel side wall part 53 with the space 52 in between, and is parallel to the panel side wall part 53 with a predetermined interval.
The side wall portions 55 and 56 are wall portions that connect between the end portions of the panel side wall portion 53 and the back surface side wall portion 54, and are wall portions that stand from the end portions of the panel side wall portion 53 and the back surface side wall portion 54. .
The space 52 communicates with the outside in the longitudinal direction, and the openings of the fastening holes 65 and 66 of the fastening receiving portions 57 and 58 are exposed to the outside.

As can be seen from FIGS. 4 and 6, the reinforcing bars 15 and 16 include notches 50 and 51 at both ends in the longitudinal direction.
The notches 50 and 51 are substantially rectangular notches with corners notched when viewed from the side. That is, the notches 50 and 51 are notches extending from the end in the longitudinal direction toward the center, as can be seen from FIG. Furthermore, the notches 50 and 51 are also notches extending from the solar cell panel 10 side toward the back surface side (side away from the solar cell panel 10) in the thickness direction.
Further, as can be seen from FIG. 10, the notches 50 and 51 are notches obtained by notching both ends of the panel sidewall 53 and part of both ends of the side sidewalls 55 and 56. 55 and 56 are cut out to a substantially central position in the standing direction.

When the reinforcing bars 15 and 16 are viewed from another point of view, the reinforcing bars 15 and 16 protrude from the long main body 60 and from both ends in the longitudinal direction of the main body 60, as can be seen from FIGS. It has attachment parts 61 and 62 (overhang part).
As shown in FIG. 10, the main body 60 is a part formed by the panel side wall 53, the back side wall 54, and the side wall 55, 56 described above.
As can be seen from FIGS. 2 and 10, the attachment portions 61 and 62 are portions for attachment to the rail member 6 of the gantry 2, and are portions formed by the back side wall portion 54 and the side wall portions 55 and 56.
As shown in FIG. 10, a step is formed between the distal end portions of the attachment portions 61 and 62 and the distal end portion of the main body portion 60, and the main body portion 60 is interposed via the side wall portion 63 of the attachment portions 61 and 62. It is continuous with the tip of the step.
The side wall part 63 is a wall part extending in the longitudinal direction of the reinforcing bars 15, 16, and is a wall part parallel to the panel side wall part 53 and the back side wall part 54.

Further, as shown in FIG. 10, the reinforcing bars 15 and 16 include insertion holes 67 and 68 through which the second fastening elements 92 of the fixing member 9 can be inserted into the back side wall portions 54 and 54 of the attachment portions 61 and 62. ing.
The insertion holes 67 and 68 are through-holes penetrating the back side wall portions 54 and 54 in the member thickness direction, and the width direction of the reinforcing bars 15 and 16 (the direction perpendicular to the longitudinal direction and in the thickness direction). Is a long hole extending in a direction perpendicular to the axis.

As shown in FIG. 5, the adhesive member 13 includes one or more elastic tapes 70 and one or more adhesive curing portions 71.
The elastic tape 70 is a main body sheet having elasticity and an adhesive layer formed on at least one side of the main body sheet. The elastic tape 70 of this embodiment is a kind of double-sided tape in which adhesive layers are formed on both sides of a main body sheet.
The adhesive curing part 71 is a part where a fluid adhesive is cured. The adhesive curing part 71 of the present embodiment is obtained by curing a liquid adhesive mainly composed of a modified silicone resin and has elasticity.

The fastening elements 17 and 18 are engaged with the fastening holes 65 and 66 of the fastening receiving portions 57 and 58 of the reinforcing bars 15 and 16 to integrate the frame members 11 and 12 and the reinforcing bars 15 and 16.
Specifically, the fastening elements 17 and 18 are external screws formed of a conductor, and include a head portion 80 and a shaft portion 81 standing upright with respect to the head portion 80 as shown in FIG. .
The head 80 is a flange-shaped part that is connected to the end of the shaft 81 and protrudes in the radial direction from the end of the shaft 81. On the surface opposite to the shaft portion 81 of the head portion 80, an engaging portion that can be engaged with a screwdriver or the like is provided in the same manner as a known screw.
The head portion 80 is a protruding portion from the shaft portion 81, and a projection 83 is formed on the surface of the shaft portion 81 side.
The protrusion 83 is a protrusion that protrudes from the head portion 80 toward the axial direction of the shaft portion 81, and is sharpened from the proximal end portion toward the distal end portion.

The fixing member 9 is a member that fixes the reinforcing bars 15 and 16 to the rail member 6, and includes a second fastening element 92 and a fastening receiving member 93.
The 2nd fastening element 92 is a temporary fastening element, and is specifically the volt | bolt formed with the conductor.
The fastening receiving member 93 is a member that can be fastened to the second fastening element 92, and specifically, a nut.

Subsequently, the positional relationship of each member of the solar cell module installation structure 1 will be described.

First, the positional relationship of each member of the solar cell module 3 will be described.

As can be seen from FIGS. 3 and 4, the solar cell panel 10 has frame members 11 and 12 attached to two sides 85 and 86 facing in the longitudinal direction Y, and frame members on the remaining two sides 87 and 88. Is not installed. That is, the end surfaces belonging to the horizontal sides 85 and 86 extending in the horizontal direction X are covered with the frame members 11 and 12, and the end surfaces belonging to the vertical sides 87 and 88 extending in the vertical direction Y are naked. . That is, as shown in FIG. 1, when viewed from the light receiving surface 20 side, most of the vertical sides 87 and 88 of the solar cell module 3 are directly visible. In the present embodiment, 90% or more of the vertical sides 87 and 88 are directly visible, and specifically, portions other than the portions overlapping the frame members 11 and 12 are directly visible.

Moreover, both ends of the vertical direction Y of the solar cell panel 10 are respectively inserted into the holding recesses 36 of the frame members 11 and 12 as shown in FIG. The adhesive curing portion 90 is filled in the gap. That is, the adhesive is filled in the gap between the solar cell panel 10 and the holding recess 36 and cured to form an adhesive curing portion 90. Further, the adhesive has a function as a cushioning material because of its elastic body, and can increase the rigidity of the solar cell panel 10.
Further, the adhesive curing part 90 is a part where the same adhesive as the adhesive curing part 71 is cured. That is, the adhesive curing unit 90 of the present embodiment is obtained by curing a liquid adhesive mainly composed of a modified silicone resin, and has elasticity.

The light receiving side cover portions 32 and 32 of the frame members 11 and 12 cover a part of the light receiving surface side surface of the solar cell panel 10. The end face side cover portions 35 and 35 cover end faces to which the horizontal sides 85 and 86 of the solar cell panel 10 belong. The back surface side cover portions 33, 33 cover a part of the surface opposite to the light receiving surface 20 side of the solar cell panel 10.

As shown in FIG. 5, the lengths of the frame members 11 and 12 in the longitudinal direction are slightly longer than the lengths of the horizontal sides 85 and 86 of the solar cell panel 10, and both end portions of the frame members 11 and 12 in the longitudinal direction are The solar cell panel 10 protrudes from the vertical sides 87 and 88.

As shown in FIG. 3, one end of the two reinforcing bars 15 and 16 is connected to an intermediate portion in the longitudinal direction of the connection portion 31 of the frame member 11, and the connection portion 31 of the frame member 12 is connected. The other ends of the two reinforcing bars 15 and 16 are connected to an intermediate portion in the longitudinal direction.
Specifically, the reinforcing bar 15 is provided at a position ¼ of the total length of the frame members 11 and 12 from one end of the frame members 11 and 12, and the reinforcing bar 16 is provided with the frame members 11 and 12. Of the frame members 11 and 12 from the other end of the frame. That is, the distance of the reinforcing bar 15 from the longitudinal center of the frame members 11 and 12 is equal to the distance of the reinforcing bar 16 from the longitudinal center of the frame members 11 and 12.
Further, the extending direction of the frame members 11 and 12 is orthogonal to the extending direction of the reinforcing bars 15 and 16 as shown in FIG.

As shown in FIG. 6, the connection parts 31, 31 of the frame members 11, 12 have entered the notches 50, 51, and cover both ends in the longitudinal direction of the main body 60 (see FIG. 10). Yes. That is, the connection portions 31 and 31 have overlapping portions with the reinforcing bars 15 and 16 in the longitudinal direction.
Further, the back side cover portions 33 and 33 of the frame members 11 and 12 cover a part of the panel side wall portion 53 of the main body portion 60. That is, the corner formed by the back surface side cover portion 33 and the connection portion 31 of the frame member 11 overlaps with the corner portion formed by one end surface in the longitudinal direction of the main body portion 60 and the panel side wall portion 53. Similarly, a corner portion formed by the back surface side covering portion 33 of the frame member 12 and the connection portion 31 overlaps a corner portion formed by the other end surface in the longitudinal direction of the main body portion 60 and the panel side wall portion 53. That is, as shown in FIG. 3, the main body 60 is sandwiched between the connection portions 31 and 31 of the frame members 11 and 12 in the vertical direction Y, and the movement in the vertical direction Y is restricted. In other words, the main body portion 60 is fitted between the connection portions 31 and 31 of the frame members 11 and 12.
The attachment portions 61 and 62 protrude from the frame member 11 when viewed from the light receiving surface 20 side, and the insertion holes 67 and 68 are located in the respective extended portions.

The insertion holes 37 and 37 (insertion holes 38 and 38) of the connection parts 31 and 31 are connected with the fastening holes 65 and 66 of the fastening receiving parts 57 and 58, as shown in FIG. Is forming. The fastening elements 17 and 18 are inserted into the communication holes, and the frame members 11 and 12 and the reinforcing bars 15 and 16 are integrated. That is, the shaft portions 81, 81 of the fastening elements 17, 18 are inserted into the insertion holes 37, 37 (insertion holes 38, 38) of the frame members 11, 12, and screwed with the fastening holes 65, 66 of the reinforcing bars 15, 16. Match.
As shown in the enlarged view of FIG. 6, the protrusions 83 and 83 of the fastening elements 17 and 18 are in contact with the core member 45 by peeling off a part of the insulating layer 46 formed on the surfaces of the frame members 11 and 12. .
That is, the fastening elements 17 and 18 scrape the insulating layer 46 by rotating the projecting portion 83 of the head portion 80 in contact with the insulating layer 46 on the surface of the frame members 11 and 12 to form an exposed portion of the core member 45. To do. The fastening elements 17 and 18 are electrically connected to the frame members 11 and 12 when the protrusions 83 and 83 of the head portions 80 and 80 are in direct contact with the exposed portions of the core members 45 and 45. The fastening elements 17 and 18 are electrically connected to the fastening elements 17 and 18 by the shaft portions 81 and 81 engaging with the fastening holes 65 and 66 of the metal reinforcing bars 15 and 16. It is connected to the. Therefore, the frame members 11 and 12 and the reinforcing bars 15 and 16 are electrically connected via the fastening elements 17 and 18.

The solar cell panel 10 is integrated with the reinforcing bars 15 and 16 via the adhesive members 13 and 13 as shown in FIG. The adhesive members 13 and 13 are provided on the back surface of the solar cell panel 10 and extend intermittently in a straight line in the longitudinal direction Y. Specifically, in the adhesive member 13, the elastic tape 70 and the adhesive curing portion 71 are alternately arranged in the longitudinal direction Y, and spaces 75 and 76 are provided between the elastic tape 70 and the adhesive curing portion 71. Is formed. Further, the adhesive members 13 are arranged in parallel so as to be parallel to each other with a predetermined interval in the lateral direction X. That is, the reinforcing bars 15 and 16 are distributed in a planar shape on the back side of the solar cell panel 10 and are separated so as to be parallel.

The terminal box 22 is disposed between the reinforcing bars 15 and 16 adjacent to the back surface of the solar cell main body 21 and in the lateral direction X.

Subsequently, the positional relationship between the gantry 2 and the solar cell module 3 will be described.

As shown in FIG. 2, the gantry 2 is fixed with respect to the ground 100, and the solar cell module 3 is fixed in an inclined posture so that the light receiving surface 20 has a predetermined angle.
A plurality of fixed units 4 are arranged in parallel on the ground 100. Each fixed unit 4 has a different height from the ground 100 and gradually increases in the juxtaposed direction.
The solar cell module 3 is supported by two fixed units 4 and 4 adjacent to each other in the juxtaposition direction. The insertion holes 67 and 68 of the attachment portions 61 and 62 of the solar cell module 3 communicate with the fixing holes 7 and 7 of the fixing units 4 and 4 adjacent to each other in the juxtaposed direction to form communication holes. The second fastening element 92 of the fixing member 9 is inserted through the communication hole and fastened to the fastening receiving member 93 so that the fixing units 4 and 4 and the solar cell module 3 are integrated. The reinforcing bars 15 and 16 extend in the inclination direction of the solar cell module 3, and the frame members 11 and 12 extend in a direction intersecting the inclination direction (a direction orthogonal in the present embodiment).

A pair of rail members 6 and 6 adjacent to each other in the juxtaposed direction fixes a plurality of solar cell modules 3 and 3 side by side in the longitudinal direction. As shown in FIG. 1, the solar cell modules 3, 3 adjacent to each other in the longitudinal direction of the rail member 6 are spaced apart from each other by a predetermined interval, and a gap 95 is formed.

According to the solar cell module 3 of the present embodiment, the reinforcing bars 15 and 16 are bonded to the solar cell panel 10 by the adhesive members 13 and 13. In addition, it is integrated with the frame members 11 and 12 by the fastening elements 17 and 18 and is fixed to the solar cell panel 10 via the frame members 11 and 12. Further, the main body portion 60 of the reinforcing bars 15 and 16 is disposed between the connection portions 31 and 31 of the frame members 11 and 12 and is fitted in the thickness direction. Therefore, even if the adhesive member 13 is peeled off from the reinforcing bars 15 and 16 due to some external factor or the like, it is possible to prevent the reinforcing bars 15 and 16 from being detached from the solar cell panel 10. For this reason, the reinforcing bars 15 and 16 are not displaced or peeled off, and are superior in safety and reliability as compared with the prior art.
In addition, since the reinforcing bars 15 and 16 can be positioned in accordance with the positions of the insertion holes 37 and 38 of the connection portions 31 and 31 of the frame members 11 and 12, the mounting positions of the reinforcing bars 15 and 16 are more accurate than the conventional one. It improves and is easy to assemble.

According to the solar cell module 3 of the present embodiment, the ends in the vertical direction Y of the solar cell panel 10 are protected by the frame members 11 and 12, and the two reinforcing bars 15 and 16 are separated from the frame members 11 and 12. It is overhanging. Therefore, it is difficult to directly contact the glass substrates 23 and 24 during construction, and the glass substrates 23 and 24 are not easily broken.
Moreover, according to the solar cell module 3 of the present embodiment, both end portions in the longitudinal direction of the frame members 11 and 12 slightly protrude from the vertical sides 87 and 88 of the solar cell panel 10, and corner portions of the solar cell panel 10 are formed. Covered by frame members 11 and 12. Therefore, the corners of the glass substrates 23 and 24 are not exposed, and the corners of the glass substrates 23 and 24 are not easily chipped.

According to the installation structure 1 of the present embodiment, the mounting portions 61 and 62 of the solar cell module 3 can be directly fixed to the rail members 6 and 6 of the gantry 2 using the fixing member 9, so that the mounting to the gantry 2 is possible. Easy.
Further, according to the installation structure 1 of the present embodiment, the insertion holes 67 and 68 of the attachment portions 61 and 62 of the solar cell module 3 are long holes extending in the extending direction of the rail members 6 and 6. Therefore, by temporarily fastening the second fastening element 92 and the fastening receiving member 93 of the fixing member 9 and adjusting the fastening position in this state, the position of the solar cell module 3 relative to the rail members 6 and 6 is adjusted to the rail members 6 and 6. It can be adjusted in the extending direction.

According to the installation structure 1 of the present embodiment, the frame members 11 and 12 and the reinforcing bars 15 and 16 are electrically connected via the fastening elements 17 and 18. Therefore, the solar cell panel 10 may be grounded with respect to any of the frame members 11 and 12 and the reinforcing bars 15 and 16, and the solar cell panel 10 is easily grounded.

By the way, the solar cell module 3 of this embodiment has the frame members 11 and 12 attached to the horizontal sides 85 and 86 of the solar cell panel 10, and the frame 2 so that the frame members 11 and 12 are located at the end portions in the inclination direction. Installed. That is, the downstream frame member 11 is positioned downstream in the water flow direction when it rains, and a puddle is formed on the solar cell module 3 due to the thickness of the light receiving side cover portions 32 and 32. There is a risk of being.

Therefore, according to the installation structure 1 of the present embodiment, the space between the solar cell panel 10 and the frame members 11 and 12 is filled with the adhesive curing portion 90. Therefore, it is possible to prevent rainwater and the like from entering the gap between the solar cell panel 10 and the frame members 11 and 12, and to prevent water from entering from the end face of the solar cell panel 10 to the inside.
Moreover, according to the installation structure 1 of this embodiment, since the gap 95 is formed between the solar cell modules 3 and 3 adjacent to each other in the longitudinal direction of the rail member 6, the puddle accumulated on the solar cell module 3 is It is possible to escape from the gap 95.
Furthermore, according to the installation structure 1 of the present embodiment, the reinforcing bars 15 and 16 extend in the inclination direction of the solar cell module 3, and the space 52 communicates with the outside in the inclination direction. In addition, the spaces 52, 52 of the attachment portions 61, 62 of the reinforcing bars 15, 16 are open upward in the vertical direction. Therefore, rain or the like is guided to the mounting portions 61 and 62 and easily passes through the space 52 of the reinforcing bars 15 and 16, so that salt or dirt accumulated in the space 52 of the reinforcing bars 15 and 16 is caused to flow by rain or the like. Can do. Therefore, deterioration (corrosion) of the reinforcing bars 15 and 16 due to salt or dirt can be prevented.

According to the solar cell module 3 of the present embodiment, since the solar cell panel 10 is sealed by the two glass substrates 23 and 24, it is possible to improve moisture resistance and salt damage resistance, and high reliability. Solar cell module.

In the above-described embodiment, the solar cell panel 10 has a quadrangular shape, but the present invention is not limited to this. The solar cell panel 10 only needs to have at least two opposing sides. For example, the shape of the solar cell panel 10 may be a hexagonal shape.

In the above-described embodiment, the frame members 11 and 12 are provided over the entire lateral sides 85 and 86 of the solar cell panel 10, but the present invention is not limited to this. The frame members 11 and 12 may be provided over most of the horizontal sides 85 and 86.
Further, the frame members 11 and 12 may be provided on the vertical sides 87 and 88 of the solar cell panel 10.

In the above-described embodiment, the vertical sides 87 and 88 of the solar cell panel 10 are all directly visible when viewed from the light receiving surface 20 side, but the present invention is not limited to this. As long as the vertical sides 87 and 88 of the solar cell panel 10 are seen from the light-receiving surface 20 side, most of them may be directly visible. That is, another member may be attached to a part of the vertical sides 87 and 88.

In the above-described embodiment, the case where the mega solar solar cell system is used as a part of an industrial solar cell system has been described. However, the present invention is not limited to this and is used for a household solar cell system. May be. For example, the solar cell module installation structure 1 may be installed on a roof or a garden.

In the above-described embodiment, the solar cell main body 21 is sealed by interposing the photoelectric conversion element 25 between the two glass substrates 23 and 24, but the present invention is not limited to this, and the glass substrate You may seal using things other than. For example, the photoelectric conversion element 25 may be sealed with a film instead of the glass substrate 24.

In the embodiment described above, the solar cell module 3 is fixed to the gantry 2 using the reinforcing bars 15 and 16, but the present invention is not limited to this. For example, you may fix the solar cell module 3 to the mount frame 2 using an attachment metal fitting.

In the above-described embodiment, the frame members 11 and 12 have the insulating layer 46 painted on the surface of the core member 45. However, the present invention is not limited to this, and the insulating layer 46 is not necessarily provided. It does not have to be. That is, the surface of the core material 45 may be exposed to the outside.

In the above-described embodiment, the fixing member 9 is constituted by the second fastening element 92 and the fastening receiving member 93, and the reinforcing bar 15 and the rail member 6 are integrated with each other by fastening them. Is not limited to this. For example, the fastening receiving member 93 and the rail member 6 may be integrated in advance by welding or the like, and the second fastening element 92 may be fastened to the fastening receiving member 93 integrated with the rail member 6. Further, for example, the inner surface of the fixing hole 7 of the rail member 6 is threaded to have a function as a fastening receiving member 93, the second fastening element 92 is inserted into the insertion holes 67 and 68, and the fixing hole 7 of the rail member 6 is inserted. The reinforcing bar 15 and the rail member 6 may be integrated. In this case, the fixing hole 7 may be a bottomed hole.

In the above-described embodiment, the solar cell module 3 is reinforced by the two reinforcing bars 15 and 16, but the present invention is not limited to this. The number of reinforcing bars is not particularly limited. That is, the solar cell module 3 may be reinforced by one reinforcing bar, or may be reinforced by three or more reinforcing bars. When reinforcing with three or more reinforcing bars, the intervals between the reinforcing bars are preferably equal.

DESCRIPTION OF SYMBOLS 1 Installation structure of solar cell module 2 Base 3 Solar cell module 6 Rail member 10 Solar cell panel 11 1st frame member 12 2nd frame member 13 Adhesive member 15 1st reinforcement bar | burr 16 2nd reinforcement bar | burr 17, 18 Fastening element 20 Light reception Surface 30 Holding part 31 Connection part (standing wall part)
33 Back side cover part 36 Holding recessed part 57, 58 Fastening receiving part 61, 62 Mounting part (overhang part)
85,86 Horizontal sides (opposite sides)
87,88 Vertical side 92 Second fastening element 95 Clearance

Claims (15)

1. A solar cell module having a light receiving surface on one side,
   A solar cell panel having at least two opposite sides, a pair of frame members holding the two opposite sides of the solar cell panel, and a reinforcing bar connecting the pair of frame members;
   Sides other than the two opposite sides of the solar cell panel, when viewed from the light-receiving surface side, can be directly visually recognized most or all of the sides.
   The pair of frame members each have a holding portion that holds an end portion of the solar cell panel, and a connection portion that connects to the reinforcing bar,
   The holding portion covers at least an end face of the solar cell panel,
   The reinforcing bar extends so as to straddle the two opposite sides when viewed from the back side,
   Further, the reinforcing bar is fastened to each of the connection portions of the pair of frame members by fastening elements.
2. The said holding | maintenance part has a holding | maintenance recessed part extended in groove shape, and the edge part of the said solar cell panel is inserted in the said holding | maintenance recessed part, The said solar cell panel is hold | maintained. Solar cell module.
3. The pair of frame members are elongated and cover the solar cell panel over the entire two opposite sides.
   The solar cell module according to claim 1 or 2, wherein ends of the pair of frame members extend from the solar cell panel.
4. The connecting portion and the reinforcing bar have an overlapping portion in the longitudinal direction of the reinforcing bar,
   The solar cell module according to any one of claims 1 to 3, wherein the connection portion and the reinforcing bar are integrated by inserting the fastening element in a longitudinal direction of the reinforcing bar.
5. The holding portion has a back surface side covering portion that covers the back surface side of the solar cell panel,
   The connection portion has a standing wall portion erected with respect to the back surface side covering portion,
   The standing wall portion has an insertion hole through which the fastening element can be inserted,
   The reinforcing bar has a fastening receiving portion that can be fastened to the fastening element,
   The solar cell module according to any one of claims 1 to 4, wherein the fastening element is fastened to the fastening receiving portion through the insertion hole.
6. The standing wall portions of the pair of frame members are opposed to each other with a predetermined interval,
   The solar cell module according to claim 5, wherein a part of the reinforcing bar is fitted between the standing wall portions of the pair of frame members.
7. The reinforcing bar has a fastening receiving portion that can be fastened to the fastening element,
   The frame member has a conductive core material coated with an insulating layer,
   The connection portion of the frame member has an exposed portion where a core material is exposed from the insulating layer,
   The fastening element is a conductor and is fastened to a fastening receiving portion of the reinforcing bar in contact with the exposed portion,
   The solar cell module according to any one of claims 1 to 6, wherein the reinforcing bar and the frame member are electrically connected by the fastening element.
8. A space is formed between the solar cell panel and the reinforcing bar,
   The solar cell module according to any one of claims 1 to 7, wherein an adhesive member having elasticity is disposed in the space.
9. A plurality of reinforcing bars for connecting the pair of frame members;
   The solar cell module according to any one of claims 1 to 8, wherein the at least two reinforcing bars are distributed in a planar shape and are spaced apart from each other in parallel.
10. A solar cell module installation structure in which the solar cell module according to any one of claims 1 to 9 is fixed and installed on a gantry,
    The mount has a rail member,
    The reinforcing bar has a long shape and has a protruding portion that protrudes from the frame member when viewed from the light receiving surface side.
    The overhanging part is attached to the rail member directly or via another member, and the installation structure of the solar cell module.
11. The mount has a plurality of rail members,
    The at least two rail members are separated by a predetermined distance;
    The reinforcing bar, when viewed from the light receiving surface side, has its both ends projecting from the pair of frame members to form two projecting parts,
    The solar cell module according to claim 10, wherein the two projecting portions are fixed to the two rail members, and both ends are supported by the two rail members. Installation structure.
12. The gantry supports the solar cell module in an inclined manner so that the light receiving surface has a predetermined angle.
    The reinforcing bar is a hollow body, and has an internal space that communicates with the outside in the inclination direction of the solar cell module.
    The solar cell module installation structure according to claim 11, wherein the internal space of the reinforcing bar is open upward in the vertical direction at the two projecting portions.
13. The rail member extends in a predetermined direction, and the reinforcing bar is attached by a second fastening element,
    The reinforcing bar has an insertion hole in the projecting portion,
    The insertion hole is a long hole extending in the extending direction of the rail member,
    The installation structure of the solar cell module according to any one of claims 10 to 12, wherein the second fastening element is inserted through the insertion hole to fix the reinforcing bar to the rail member. .
14. The gantry supports the solar cell module in an inclined manner so that the light receiving surface has a predetermined angle.
    The solar cell module installation structure according to any one of claims 10 to 13, wherein the pair of frame members are opposed to each other with the solar cell panel sandwiched in an inclination direction of the solar cell module.
15. The mount is for fixing the solar cell module and another solar cell module side by side in the extending direction of the rail member,
    15. The solar cell module installation structure according to claim 10, wherein a gap is formed between the solar cell module and the other solar cell module.

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