JP6707086B2 - Solar cell module and its installation structure - Google Patents

Description

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

Conventionally, so-called frameless solar cell modules in which a frame is not attached around the solar cell panel are known. This frameless solar cell module has a feature that the frame is not visible from the light-receiving surface side because the frame is not provided around the solar cell panel, and the appearance is excellent.

However, in this frameless solar cell module, since the solar cell panel is not provided with a frame, the shape of the solar cell panel itself is maintained by the rigidity of the solar cell panel itself. Therefore, there is a problem that it is difficult to secure mechanical strength against wind load and snow load. Further, if the mechanical strength is insufficient, the rigidity of the solar cell panel may not be able to withstand, and the solar cell panel may be damaged.

Then, as a measure for reinforcing the rigidity of such a frameless solar cell module, for example, there is Patent Document 1. In the solar cell module described in Patent Document 1, two supporting members are attached to the back surface side of the solar cell panel with an adhesive to integrate the solar cell panel and the supporting member, and the rigidity of the solar cell panel is reinforced by the supporting member. is doing. Further, in the solar cell module of Patent Document 1, since the supporting member is provided on the back surface side of the solar cell panel, it is difficult to see from the light receiving surface side in the installed state, and the presence of the supporting member does not impair the appearance.

JP, 2011-109072, A

However, the solar cell module described in Patent Document 1 is mounted so that the two linearly extending support members 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, the reinforcing effect of the solar cell panel with respect to the bending of the supporting members in the juxtaposed direction can hardly be expected. Therefore, when the supporting members are bent in the direction in which they are arranged, such as between the supporting members, the solar cell panel may be damaged.
Further, in the solar cell module described in Patent Document 1, when a load such as snow is applied to the solar cell panel, stress is intensively generated near the end portion of the support member, which is a reinforced portion of the solar cell panel. There are cases. Therefore, the vicinity of the portion of the solar cell panel where the 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 rail, in which the solar cell panel is less likely to be damaged by bending or the like, and the reinforcing rail and the solar cell panel have a high integrated strength. It is an object to provide a solar cell module installation structure using the solar cell module.

One aspect of the present invention for solving the above-mentioned problems 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 for holding, and a reinforcing bar connecting the pair of frame members, the sides other than the two opposite sides of the solar cell panel, when viewed from the light-receiving surface side, most of them or All of them are directly visible, and the pair of frame members each have a holding portion for holding an end portion of the solar cell panel and a connecting portion for connecting with the reinforcing bar, and the holding portion is at least the sun. The reinforcing bars extend over the opposite two sides when viewed from the back surface side, and the reinforcing bars are connected by fastening elements to the pair of frames. The solar cell module is fastened to each of the connection parts of the members.

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

According to this aspect, when viewed from the light receiving surface side, the frame members are attached to the two opposite sides of the solar cell panel, and the remaining sides are 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 has an excellent appearance when viewed from the light receiving surface side.
According to this aspect, the holding portions of the pair of frame members cover the end faces belonging to the two opposite sides of the solar cell panel to hold the solar cell panel, and the reinforcing bars connect between the connecting portions of the pair of frame members. .. The pair of frame members and the reinforcing bar are physically fixed by the fastening element. Therefore, it is possible to increase the strength of integration between the reinforcing rail and the solar cell panel as compared with the conventional case.
Further, according to this aspect, the extending direction of the frame member and the extending direction of the reinforcing bar intersect, so that the solar cell panel can be reinforced in both vertical and horizontal directions. Therefore, it is possible to suppress the stress generated in the solar cell panel and prevent the solar cell panel from being damaged. Further, even if a load such as snow is applied to the solar cell panel and stress is generated on the glass near the longitudinal end of the reinforcing bar, it can be escaped by the frame member, and the end of the solar cell panel is damaged. It is possible to prevent it.

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, it is possible to firmly hold the solar cell panel by the frame member.

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

A preferred aspect is that the pair of frame members are elongated and cover the solar cell panel over the entire two opposite sides, and the end portions in the longitudinal direction of the pair of frame members are: That is, it projects from the solar cell panel.

According to this aspect, the end portions of the pair of frame members project 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, it is possible to prevent the corners of the solar cell panel from being chipped due to contact or the like during construction, Easy to install.

A preferred aspect is that the connecting 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. That is what has been done.

According to this aspect, the frame member and the reinforcing bar are integrated by inserting the fastening element in the longitudinal direction of the reinforcing bar. That is, since the fastening element is inserted in the direction intersecting the bending direction of the solar cell panel, the fastening element is unlikely to come off due to the bending of the solar cell panel or the like.

A preferred aspect is that the holding portion has a back surface side covering portion that covers a back surface side of the solar cell panel, and the connection portion has a standing wall portion that is provided upright 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 passed through the insertion hole to perform the fastening. That is, it is fastened to 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 gap, 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 bars and the frame member are fitted by fitting a part of the reinforcing bars between the standing wall portions. Therefore, it is possible to prevent the reinforcing bar from coming off from the solar cell panel. Further, it is possible to prevent the displacement of the reinforcing bar in the longitudinal direction.

A preferred aspect is that the reinforcing bar has a fastening receiving portion that can be fastened to the fastening element, and the frame member is one in which a surface of a conductive core material is covered with an insulating layer. The connecting portion has an exposed portion in which 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 by contacting 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 grounding to the reinforcing bar and the frame member, respectively. 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 arranged 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 functions as a cushioning material, and when the solar cell panel receives an impact or the like from the outside, It is possible to further prevent damage to the solar cell panel.

In the aspect described above, a gap may be formed between the solar cell panel and the frame member, and a second adhesive member having elasticity may be arranged in the gap.

According to this aspect, since the second adhesive member having elasticity is arranged between the frame member and the solar cell panel, the second adhesive member acts as a cushioning material, and the solar cell panel receives an impact or the like from the outside. It is possible to further prevent the solar cell panel from being damaged when it is turned on.

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

According to this aspect, since the plurality of reinforcing bars are distributed and reinforced in a planar shape, it is possible to further increase the rigidity of the solar cell panel.

One aspect of the present invention is a solar cell module installation structure in which the above solar cell module is fixedly installed on a gantry, wherein the gantry has a rail member, and the reinforcing bar has a long shape. And a solar cell module that has an overhang portion that overhangs from the frame member when viewed from the light-receiving surface side, and the overhang portion is attached to the rail member directly or through another member. It is the installation structure of.

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

A more preferable aspect is that the gantry has a plurality of rail members, at least two rail members are spaced apart from each other by a predetermined distance, and the reinforcing bars are both ends of the reinforcing bar when viewed from the light receiving surface side. A portion overhangs the pair of frame members to form two overhanging portions, and the solar cell module is configured such that the two overhanging portions are fixed to the two rail members, and Both ends are supported.

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

A more preferable aspect is that the gantry supports the solar cell module by inclining it so that the light receiving surface is at a predetermined angle, and the reinforcing bar is a hollow body, and the solar bar is inside the hollow body. The battery module has an internal space that communicates with the outside 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, since rain or the like can pass through the inner space of the reinforcing bar from one overhang and escape from the other overhang, salt and dirt accumulated in the inner space of the reinforcing bar can be rained. And so on. Therefore, deterioration (corrosion) of the reinforcing bar due to salt content or dirt can be prevented.

A preferred aspect is that the rail member extends in a predetermined direction, 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 an elongated hole extending in the extending direction of the rail member, and the second fastening element is inserted through the insertion hole to fix the reinforcing bar to the rail member. is there.

According to this aspect, since the insertion hole is the elongated hole extending in the extending direction of the rail member, it is possible to adjust the position of the rail member in the extending direction with the second fastening element temporarily tightened. Further, the rail member and the solar cell module can be fixed to a specific position by fully tightening the second fastening element.

A preferred aspect is that the gantry supports the solar cell module by inclining it so that the light receiving surface has a predetermined angle, and the pair of frame members includes the solar cell module in an inclination direction of the solar cell module. That is, they are opposed to each other with the battery panel interposed therebetween.

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

A preferred aspect is that the mount mounts the solar cell module and another solar cell module side by side in the extension direction of the rail member and fixes the solar cell module between the solar cell module and the other solar cell module. That is, a gap is formed in.

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

According to the solar cell module and its installation structure of the present invention, the solar cell panel is less likely to be damaged due to bending and the like, and the strength of integration between the reinforcing rail 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 an exploded 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. It is an AA sectional view of the solar cell module of FIG. It is the end view which looked at the solar cell module of FIG. 4 from the longitudinal direction of the reinforcement 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 reinforcement crosspiece of FIG. It is a BB sectional view of the reinforcing bar of FIG.

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 called a so-called mega solar. It is a thing.
As shown in FIG. 1, the installation structure 1 installs the solar cell module 3 on the ground 100 such as an idle land, and is mainly composed of a pedestal 2 and a plurality of solar cell modules 3. There is.

The pedestal 2 is inclined and fixed so that the light receiving surface 20 of the solar cell module 3 has a predetermined angle with respect to the ground 100. The inclination angle of the light receiving surface 20 of the solar cell module 3 is preferably 3 degrees to 35 degrees. In this embodiment, the inclination angle of the light receiving surface 20 is about 5 degrees.

As shown in FIG. 2, the gantry 2 is composed of a plurality of fixed units 4 having different heights from the ground 100.
The fixed unit 4 is composed of a plurality of pillar members 5 and a rail member 6 connecting the pillar members 5.
The pillar member 5 is a pillar that extends linearly in the vertical direction from the ground 100, and is a portion that supports the rail member 6. A part of the pillar 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 that fixes the solar cell module 3, and is a long plate that extends in the direction in which the pillar members 5 are arranged in parallel.
The rail member 6 is connected to the upper ends of the plurality of pillar members 5, and is supported by the plurality of pillar members 5 so as to be parallel to the ground 100.
The rail member 6 is provided with 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 read from FIGS. 3 and 4, the solar cell module 3 has, as main constituent elements, a solar cell panel 10, a first frame member 11, a second frame member 12, a first reinforcing bar 15, and 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 that is a photoelectric conversion device that converts light into electric energy.
The solar cell panel 10 is a quadrangular plate-shaped panel and has a light receiving surface 20 on one surface thereof. The solar cell panel 10 is rectangular and has a short side of about 1 m, which is larger than that of a general household solar cell panel.
As shown in FIG. 8, the solar cell panel 10 includes a solar cell main body 21 in which a photoelectric conversion element 25 is interposed between two glass substrates 23 and 24, and a photoelectric conversion element 25 of the solar cell main body 21 and the photoelectric conversion element 25. The terminal box 22 is provided with the terminals connected to.
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 is provided with a joined pin junction structure.
The glass substrate 24 has a terminal hole 29 near the center thereof.
The terminal hole 29 is a hole through which a wiring (not shown) that connects the terminal box 22 and the electrode layer of the photoelectric conversion element 25 is inserted, and is a through hole that penetrates the glass substrate 24 in the member thickness direction.

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 surrounding the photoelectric conversion element 25. The material 27 and the third sealing material 28 that closes 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 edges of the glass substrates 23 and 24, and can seal the glass substrates 23 and 24 and the space inside thereof.
The third encapsulant 28 is an encapsulant that closes the gap between the wiring (not shown) that connects the terminal box 22 and the photoelectric conversion element 25 and the terminal hole 29.

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

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 “F”-shaped cross section, and have linear lengths extending 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 each include a holding portion 30 and a connecting portion 31 (standing wall portion).
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-sectional shape.
The holding unit 30 includes a light receiving side cover 32, a back side cover 33, and an end face side cover 35 that connects the light receiving side cover 32 and the back side cover 33.
The light-receiving side cover 32 is a part that covers the surface of the solar cell panel 10 on the light-receiving surface 20 side.
The back surface side cover portion 33 is a portion that covers the back surface of the solar cell panel 10. Back surface side covering portion 33 is arranged at a position spaced apart from light receiving side covering portion 32 by a predetermined distance in the thickness direction of solar cell panel 10.
The end surface side cover portion 35 is a portion that covers the end surface of the solar cell panel 10. The end surface side covering portion 35 is erected on the light receiving side covering portion 32, and is also erected on the back surface side covering 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 that stands up from the light receiving side cover portion 32 and the back surface side cover portion 33.

From another perspective, as shown in FIG. 9, the holding portion 30 includes a groove-shaped holding recess extending in the longitudinal direction by the light-receiving side cover portion 32, the back surface side cover portion 33, and the end surface side cover portion 35. 36 are formed.
The thickness of the holding recess 36 is slightly larger than the thickness of the solar cell panel 10, and the end portion of the solar cell panel 10 can be fitted and inserted with a margin.

As shown in FIG. 9, the connecting portion 31 is a long plate-shaped portion that linearly extends, 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 connection portion 31 is a rib that is provided upright in the thickness direction of the solar cell panel 10 from the back surface side cover portion 33 of the holding portion 30.
The connection portion 31 is orthogonal to the back surface side cover portion 33, and the connection portion 31 and the back surface side cover portion 33 have an “L” shape when viewed from the side. That is, the connecting portion 31 is aligned with the end face side covering portion 35 in a straight line and is continuous.
As can be seen from FIGS. 4 and 9, the connecting portion 31 has an insertion hole 37 (insertion hole 38) in the middle portion in the longitudinal direction through which the fastening element 17 (fastening element 18) can be inserted.
The term “longitudinal middle portion” as used herein means 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 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, each of the frame members 11 and 12 is formed by coating an insulating layer 46 on the surface of a metal core material 45. That is, in the portion in contact with the solar cell panel 10, the insulating layer 46 does not electrically connect to the metallic core material 45.

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. 3.
As can be seen from FIGS. 4 and 10, the reinforcing bars 15 and 16 are metal rod-shaped members extending in a predetermined direction, and are tubular bodies having a square annular cross section. That is, the reinforcing bars 15 and 16 are hollow bodies. In addition, as shown in FIG. 11, the cross section of the reinforcing bars 15 and 16 orthogonal to the longitudinal direction has a space 52 in the center, and surrounds the space 52. The portion 54 and the side wall portions 55 and 56 are formed. That is, the space 52 is an enclosed space surrounded by the panel side wall portion 53, the back surface 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 portion 53 is a wall portion facing the back surface (the surface opposite to the light receiving surface 20 side surface) of the solar cell panel 10 as shown in FIG. 6. As can be seen from FIGS. 10 and 11, the panel side wall portion 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, 58 are tubular portions having a substantially “C”-shaped cross section, and have fastening holes 65, 66 in the center for fastening the fastening elements 17, 18.
The fastening holes 65 and 66 are screw holes which are threaded on the wall surface. The fastening holes 65, 66 extend in the longitudinal direction of the reinforcing bars 15, 16 and can be screwed into the shaft portions 81, 81 of the fastening elements 17, 18.

The back side wall portion 54 is a wall portion that faces the panel side wall portion 53 with the space 52 interposed therebetween, and is parallel to the panel side wall portion 53 with a predetermined gap.
The side wall portions 55 and 56 are wall portions that connect the end portions of the panel side wall portion 53 and the back surface side wall portion 54, and are wall portions that are erected 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 are provided with notches 50 and 51 at both ends in the longitudinal direction.
The cutouts 50 and 51 are substantially rectangular cutouts with the corners cut away when viewed from the side. That is, the notches 50 and 51 are notches that extend from the ends in the longitudinal direction toward the center, as can be seen from FIG. 6. Furthermore, the notches 50 and 51 are also notches extending from the solar cell panel 10 side toward the back surface side (the side away from the solar cell panel 10) in the thickness direction.
As can be seen from FIG. 10, the notches 50 and 51 are notches formed by notching both ends of the panel side wall 53 and part of both ends of the side wall 55, 56. 55 and 56 are cut out to a substantially central position in the standing direction.

From another point of view of the reinforcing bars 15 and 16, the reinforcing bars 15 and 16 project from the elongated main body 60 and both ends in the longitudinal direction of the main body 60, as can be seen from FIGS. 4 and 10. It has attaching parts 61 and 62 (overhanging parts).
As shown in FIG. 10, the main body portion 60 is a portion formed by the panel side wall portion 53, the back surface side wall portion 54, and the side surface side wall portions 55 and 56 described above.
As can be seen from FIGS. 2 and 10, the attachment portions 61 and 62 are portions to be attached 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, the tip portions of the mounting portions 61 and 62 have a step between the tip portions of the main body portion 60 and the main body portion 60 via the side wall portions 63 of the mounting portions 61 and 62. Is continuous with the tip of the.
The side wall portion 63 is a wall portion that extends in the longitudinal direction of the reinforcing bars 15 and 16, and is a wall portion that is parallel to the panel side wall portion 53 and the back surface side wall portion 54.

Further, as shown in FIG. 10, the reinforcing bars 15 and 16 are provided with insertion holes 67 and 68 into which the second fastening elements 92 of the fixing member 9 can be inserted in the back surface side wall portions 54 and 54 of the mounting portions 61 and 62. ing.
The insertion holes 67 and 68 are through holes that penetrate the back side wall portions 54 and 54 in the member thickness direction, and are in the width direction of the reinforcing bars 15 and 16 (direction orthogonal to the longitudinal direction and in the thickness direction). Is a slotted hole that extends in a direction orthogonal to each other.

As shown in FIG. 5, the adhesive member 13 is composed of one or a plurality of elastic tapes 70 and one or a plurality of adhesive curing parts 71.
The elastic tape 70 is composed of an elastic main body sheet and an adhesive layer formed on at least one surface of the main body sheet. The elastic tape 70 of the present embodiment is a type of double-sided tape in which an adhesive layer is formed on both sides of the main body sheet.
The adhesive curing portion 71 is a portion where an adhesive having fluidity is cured. The adhesive curing section 71 of this embodiment is obtained by curing a liquid adhesive containing a modified silicone resin as a main component and has elasticity.

The fastening elements 17 and 18 engage 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 with the reinforcing bars 15 and 16.
Specifically, the fastening elements 17 and 18 are external threads formed of a conductor, and include a head portion 80 and a shaft portion 81 that stands upright with respect to the head portion 80 as shown in FIG. ..
The head portion 80 is a flange-shaped portion that is connected to the end portion of the shaft portion 81 and projects from the end portion of the shaft portion 81 in the radial direction. On the surface of the head portion 80 opposite to the shaft portion 81, an engaging portion capable of engaging with a driver or the like is provided as in a known screw.
The head portion 80 is a portion protruding from the shaft portion 81, and a projection portion 83 is formed on the surface on the shaft portion 81 side.
The protrusion 83 is a protrusion protruding from the head 80 in the axial direction of the shaft 81, and is sharpened from the base end toward the tip.

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 second fastening element 92 is a temporary fastening element, and specifically, is a bolt formed of a conductor.
The fastening receiving member 93 is a member that can be fastened to the second fastening element 92, and is specifically a nut.

Next, 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 each other in the vertical direction Y, and the frame members 11 and 12 are attached to the remaining two sides 87 and 88. Is not installed. That is, the end faces belonging to the lateral sides 85 and 86 extending in the horizontal direction X are covered by the frame members 11 and 12, and the end faces belonging to the vertical sides 87 and 88 extending in the vertical direction Y are naked. .. That is, in the solar cell module 3, as shown in FIG. 1, most of the vertical sides 87 and 88 are directly visible when viewed from the light receiving surface 20 side. In this embodiment, 90% or more of the vertical sides 87, 88 are directly visible, and specifically, the portions other than the portions overlapping the frame members 11, 12 are directly visible.

Further, as shown in FIG. 6, both ends of the solar cell panel 10 in the vertical direction Y are inserted into the holding recesses 36 of the frame members 11 and 12, respectively, and are located between the solar cell panel 10 and the holding recess 36. The adhesive curing portion 90 is filled in the gap. That is, the gap between the solar cell panel 10 and the holding recess 36 is filled with the adhesive and hardened to form the adhesive hardened portion 90. Further, the adhesive has a function as a cushioning material because it is an elastic body, and can increase the rigidity of the solar cell panel 10.
The adhesive curing section 90 is a section where the same adhesive as the adhesive curing section 71 is cured. That is, the adhesive curing section 90 of the present embodiment is obtained by curing a liquid adhesive containing a modified silicone resin as a main component and has elasticity.

The light receiving side covers 32, 32 of the frame members 11, 12 cover a part of the surface of the solar cell panel 10 on the light receiving surface side. The end surface side covering portions 35, 35 cover the end surfaces to which the lateral sides 85, 86 of the solar cell panel 10 belong. The back surface side covering portions 33, 33 cover a part of the surface of the solar cell panel 10 opposite to the light receiving surface 20 side.

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 lateral sides 85 and 86 of the solar cell panel 10, and the lengthwise ends of the frame members 11 and 12 are , Overhangs the vertical sides 87, 88 of the solar cell panel 10.

As shown in FIG. 3, one end of each of the two reinforcing bars 15 and 16 is connected to an intermediate portion in the longitudinal direction of the connecting portion 31 of the frame member 11, and the connecting portion 31 of the frame member 12 is connected. The other ends of the two reinforcing bars 15 and 16 are connected to the intermediate portion in the longitudinal direction of.
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 the frame members 11 and 12. Is provided at a position ¼ of the entire length of the frame members 11 and 12 from the other end of the frame member. 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 directions of the frame members 11 and 12 are orthogonal to the extending directions of the reinforcing bars 15 and 16, as shown in FIG. 7.

As shown in FIG. 6, the connection portions 31, 31 of the frame members 11, 12 have entered the cutout portions 50, 51, and cover both ends of the main body portion 60 (see FIG. 10) in the longitudinal direction. There is. That is, the connecting portions 31 and 31 have the overlapping portions with the reinforcing bars 15 and 16 in the longitudinal direction.
Further, the back surface side covering portions 33, 33 of the frame members 11, 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 of the frame member 11 and the connection portion 31 overlaps with the corner formed by the one end face 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 cover portion 33 of the frame member 12 and the connection portion 31 overlaps with a corner portion formed by the other end face 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 by the connecting portions 31, 31 of the frame members 11, 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, 31 of the frame members 11, 12.
The attachment portions 61 and 62 project from the frame member 11 when viewed from the light-receiving surface 20 side, and the insertion holes 67 and 68 are located at the respective projecting portions.

As shown in FIG. 6, the insertion holes 37 and 37 (insertion holes 38 and 38) of the connection portions 31 and 31 are in communication with the fastening holes 65 and 66 of the fastening receiving portions 57 and 58, respectively, and thus one communication hole. Is formed. The fastening elements 17 and 18 are inserted into the communication holes to integrate the frame members 11 and 12 with the reinforcing bars 15 and 16. That is, the shaft portions 81 and 81 of the fastening elements 17 and 18 are inserted into the insertion holes 37 and 37 (insertion holes 38 and 38) of the frame members 11 and 12 and screwed with the fastening holes 65 and 66 of the reinforcing bars 15 and 16. It fits.
As shown in the enlarged view of FIG. 6, the protrusions 83, 83 of the fastening elements 17, 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, 12. ..
In other words, the fastening elements 17 and 18 scrape the insulating layer 46 by rotating the protruding portion 83 of the head 80 while contacting the protruding portion 83 of the head portion 80 with the insulating layer 46 on the surface of the frame members 11 and 12 to form the exposed portion of the core material 45. To do. The fastening elements 17 and 18 are electrically connected to the frame members 11 and 12 by the protruding portions 83 and 83 of the head portions 80 and 80 directly contacting the exposed portions of the core members 45 and 45. In the fastening elements 17 and 18, the shaft portions 81 and 81 engage with the fastening holes 65 and 66 of the metallic reinforcing bars 15 and 16, so that the fastening elements 17 and 18 and the reinforcing bars 15 and 16 are electrically connected. 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.

As shown in FIG. 5, the solar cell panel 10 is integrated with the reinforcing bars 15 and 16 via the adhesive members 13 and 13. The adhesive members 13 and 13 are provided on the back surface of the solar cell panel 10, and extend linearly intermittently in the vertical direction Y. Specifically, in the adhesive member 13, the elastic tapes 70 and the adhesive curing portions 71 are alternately arranged in the vertical direction Y, and the spaces 75 and 76 are provided between the elastic tape 70 and the adhesive curing portions 71. Has been formed. Further, the adhesive members 13, 13 are arranged in parallel in the lateral direction X so as to be parallel to each other with a predetermined gap. That is, the reinforcing bars 15 and 16 are distributed in a plane shape on the back surface side of the solar cell panel 10 and are separated so as to be parallel to each other.

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

Next, 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 to the ground 100, and fixes the solar cell module 3 in a posture in which the light receiving surface 20 is inclined so as to have a predetermined angle.
On the ground 100, a plurality of fixed units 4 are arranged side by side. The heights of the respective fixing units 4 from the ground surface 100 are different, and the heights gradually increase in the arranging direction.
The solar cell module 3 is supported by two fixed units 4 and 4 that are adjacent to each other in the juxtaposed direction. The insertion holes 67 and 68 of the mounting 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 that are adjacent 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, and the fixing units 4 and 4 and the solar cell module 3 are integrated. Further, 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 to the present embodiment).

A pair of rail members 6 and 6 adjacent to each other in the juxtaposed direction fix 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 and 3 adjacent to each other in the longitudinal direction of the rail member 6 are spaced apart from each other by a predetermined distance, and a gap 95 is formed.

According to the solar cell module 3 of this embodiment, the reinforcing bars 15 and 16 are adhered 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 arranged between the connection portions 31 and 31 of the frame members 11 and 12 and fitted in the thickness direction. Therefore, even if the adhesive member 13 is peeled from the reinforcing bars 15 and 16 due to some external factor, the reinforcing bars 15 and 16 can be prevented from coming off the solar cell panel 10. Therefore, the reinforcing bars 15 and 16 are not displaced or peeled off, and are superior in safety and reliability to the conventional one.
Further, since the reinforcing bars 15, 16 can be positioned in accordance with the positions of the insertion holes 37, 38 of the connecting portions 31, 31 of the frame members 11, 12, the accuracy of the mounting position of the reinforcing bars 15, 16 is higher than in the conventional case. It is improved and easy to assemble.

According to the solar cell module 3 of the present embodiment, the ends of the solar cell panel 10 in the vertical direction Y 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 unlikely to break.
Further, according to the solar cell module 3 of the present embodiment, both longitudinal end portions of the frame members 11 and 12 slightly project from the vertical sides 87 and 88 of the solar cell panel 10, and the corner portions of the solar cell panel 10 are It is covered by the 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 less likely to be chipped.

According to the installation structure 1 of the present embodiment, since 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 pedestal 2 using the fixing member 9, the mounting to the pedestal 2 can be performed. It's easy.
Further, according to the installation structure 1 of the present embodiment, the insertion holes 67, 68 of the mounting portions 61, 62 of the solar cell module 3 are long holes extending in the extending direction of the rail members 6, 6. Therefore, the second fastening element 92 and the fastening receiving member 93 of the fixing member 9 are temporarily fastened, and the fastening position is adjusted in this state, so that the position of the solar cell module 3 with respect to the rail members 6 and 6 is adjusted. 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 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, in the solar cell module 3 of this embodiment, the frame members 11 and 12 are attached to the lateral sides 85 and 86 of the solar cell panel 10, and the frame 2 is placed so that the frame members 11 and 12 are located at the ends in the inclination direction. Is installed in. That is, the frame member 11 on the downstream side is located on the downstream side in the flow direction of water when it rains or the like, and a puddle is formed on the solar cell module 3 due to the thickness of the light-receiving side covers 32, 32. May be

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 gaps between the solar cell panel 10 and the frame members 11 and 12, and it is possible to prevent water from entering from the end surface of the solar cell panel 10 to the inside.
Further, according to the installation structure 1 of the present 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 pool of water accumulated on the solar cell module 3 is concerned. It can escape from the gap 95.
Further, 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 mounting 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, and salt or dirt accumulated in the space 52 of the reinforcing bars 15 and 16 is washed away by rain or the like. You can Therefore, deterioration (corrosion) of the reinforcing bars 15 and 16 due to salt content 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. It becomes the solar cell module.

Although the solar cell panel 10 has a quadrangular shape in the above-described embodiment, the present invention is not limited to this. The solar cell panel 10 may have at least two opposing sides. For example, the solar cell panel 10 may have 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 lateral sides 85 and 86.
The frame members 11 and 12 may be provided on the vertical sides 87 and 88 of the solar cell panel 10.

In the embodiment described above, the vertical sides 87, 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. Most of the vertical sides 87, 88 of the solar cell panel 10 may be directly visible when viewed from the light receiving surface 20 side. That is, other members may be attached to part of the vertical sides 87, 88.

In the above-described embodiment, the case where it is used as a part of the industrial solar cell system of the mega solar solar cell system has been described, but the present invention is not limited to this, and is used for a home 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 has the photoelectric conversion element 25 interposed between the two glass substrates 23 and 24 for sealing, but the present invention is not limited to this, and the glass substrate is not limited thereto. It may be sealed by using other materials. For example, the photoelectric conversion element 25 may be sealed with a film instead of the glass substrate 24.

In the above-described embodiment, the solar cell module 3 is fixed to the pedestal 2 using the reinforcing bars 15 and 16, but the present invention is not limited to this. For example, the solar cell module 3 may be fixed to the pedestal 2 using a mounting bracket.

In the above-described embodiment, the frame members 11 and 12 have the core material 45 coated with the insulating layer 46, but the present invention is not limited to this, and the insulating layer 46 is not necessarily provided. You don't have to. 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 composed of the second fastening element 92 and the fastening receiving member 93, and the reinforcing bar 15 and the rail member 6 are integrated by fastening them. Is not limited to this. For example, the fastening receiving member 93 and the rail member 6 may be previously integrated 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 the 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 by fastening with. 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.

1 Solar Cell Module Installation Structure 2 Frame 3 Solar Cell Module 6 Rail Member 10 Solar Cell Panel 11 First Frame Member 12 Second Frame Member 13 Adhesive Member 15 First Reinforcing Bar 16 Second Reinforcing Bar 17, 18 Fastening Element 20 Light Reception Surface 30 Holding part 31 Connection part (standing wall part)
33 Backside Cover 36 Holding Recess 57, 58 Fastening Receiving 61, 62 Attachment (Overhang)
85,86 Side (two opposite sides)
87,88 Vertical side 92 Second fastening element 95 Gap

Claims (15)

Chi lifting the light-receiving surface on one side, a solar cell module to be installed in fixed to the frame,
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, most or all of them are directly visible,
The pair of frame members each have a holding portion that holds an end portion of the solar cell panel, and a connecting portion that connects to the reinforcing bar,
The holding portion covers at least the end surface of the solar cell panel,
The reinforcing bar extends so as to straddle the two opposite sides when viewed from the back surface side,
Further, the reinforcing bar is fastened to each of the connecting portions of the pair of frame members by a fastening element ,
The holding portion has a holding recess that extends in a groove shape, and the solar cell panel is held by inserting the end of the solar cell panel into the holding recess,
The reinforcing bar has an elongated main body portion and a first mounting portion protruding from one end portion in the longitudinal direction of the main body portion,
The first mounting portion includes a first protruding portion protruding from the frame member when viewed from the light receiving surface side,
A step is formed between the tip of the first mounting portion and the one end of the main body,
The main body is sandwiched between the connecting portions of the pair of frame members,
The solar cell module, wherein the mounting isosamples directly or through another member the first projecting portion in the frame when installed in the frame. The reinforcing bar has a second mounting portion protruding from the other end of the main body in the longitudinal direction,
The second mounting portion includes a second protruding portion protruding from the frame member when viewed from the light receiving surface side,
A step is formed between the tip of the second mounting portion and the other end of the main body,
Wherein when installing the cradle, the solar cell module according to claim 1, wherein the mounting Rukoto the second projecting portion directly or through another member to the frame. 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 the longitudinal ends of the pair of frame members project from the solar cell panel. 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 claim 1, wherein the connecting portion and the reinforcing bar are integrated by inserting the fastening element in a longitudinal direction of the reinforcing bar. The holding portion has a back surface side covering portion that covers a back surface side of the solar cell panel,
The connection portion has a standing wall portion provided upright with respect to the back surface side cover 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 claim 1, wherein the fastening element is inserted through the insertion hole and fastened to the fastening receiving portion. The standing wall portions of the pair of frame members are opposed to each other with a predetermined gap,
The solar cell module according to claim 5, wherein a part of the reinforcing bar is fitted between standing wall portions of the pair of frame members. The reinforcing bar has a fastening receiving portion that can be fastened to the fastening element,
The frame member is one in which an insulating layer is coated on the surface of a conductive core material,
The connecting portion of the frame member has an exposed portion in which the core material is exposed from the insulating layer,
The fastening element is a conductor and is fastened to the fastening receiving portion of the reinforcing bar by contacting the exposed portion.
The solar cell module according to claim 1, wherein the reinforcing bar and the frame member are electrically connected by the fastening element. A space is formed between the solar cell panel and the reinforcing bar,
The solar cell module according to claim 1, wherein an adhesive member having elasticity is arranged in the space. A plurality of reinforcing bars connecting the pair of frame members,
9. The solar cell module according to claim 1, wherein the at least two reinforcing bars are distributed in a plane and are separated so as to be parallel to each other. 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 frame,
The mount has a rail member,
The reinforcing bar has a long shape and has the first protruding portion protruding from the frame member when viewed from the light receiving surface side,
The solar cell module installation structure, wherein the first overhanging portion is attached to the rail member directly or via another member. The gantry has a plurality of rail members,
At least two rail members are separated from each other with a predetermined gap,
When viewed from the light receiving surface side, both ends of the reinforcing bar project from the pair of frame members to form the first overhanging portion and the second overhanging portion ,
The said solar cell module WHEREIN : The said 1st overhang|projection part and the said 2nd overhang|projection part are each fixed to the said 2 rail members, The both ends are supported by the 2 rail members, The said 2nd rail part is characterized by the above-mentioned. 10. The installation structure of the solar cell module according to 10. The mount is for supporting the solar cell module by inclining it so that the light receiving surface has a predetermined angle,
The reinforcing bar is a hollow body, and is provided inside thereof with an internal space communicating 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 in the first overhang portion and the second overhang portion. .. 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 first overhang portion,
The insertion hole is an elongated hole extending in the extending direction of the rail member,
13. The solar cell module installation structure according to claim 10, wherein the second fastening element inserts the insertion hole to fix the reinforcing bar to the rail member. .. The mount is for supporting the solar cell module by inclining it 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 face each other across the solar cell panel in an inclination direction of the solar cell module. The mount is for fixing the solar cell module and another solar cell module in a line in the extending direction of the rail member,
The installation structure of the solar cell module according to any one of claims 10 to 14, wherein a gap is formed between the solar cell module and the other solar cell module.

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