WO2017138248A1

WO2017138248A1 - Solar power generation device

Info

Publication number: WO2017138248A1
Application number: PCT/JP2016/087332
Authority: WO
Inventors: 遠藤　修; 中島　丈温; 稔樋口; 吉田　朋秀
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2016-02-08
Filing date: 2016-12-15
Publication date: 2017-08-17

Abstract

According to one embodiment of the present invention, a solar power generation device 10 is provided with: a solar cell module 11, which has a solar cell panel 12, and a module frame 13 that is provided at an end portion of the panel; a mounting frame 30 to be attached to a roof, said mounting frame 30 having a long shape, being disposed on the rear side of the solar cell panel 12, and having the module frame 13 mounted thereon; and a cushioning member 14 that is provided between the mounting frame 30 and the rear surface of the solar cell panel 12, said cushioning member being at a position separated from the module frame 13.

Description

Solar power plant

This disclosure relates to a photovoltaic power generation apparatus.

A solar power generation device is generally configured by arranging a plurality of solar cell modules having a solar cell panel and a module frame provided at an edge of the panel on a roof or the like. By the way, in the solar power generation device installed in a snowy area, the solar cell panel may be bent by the weight of snow accumulated on the solar cell panel. When the solar cell module is installed on the roof, for example, the module frame is placed on a long frame frame attached to the roof, but when the solar cell panel is greatly bent, the back surface of the panel comes into contact with the frame and the back There is a risk of sheet breakage, cell cracking, and the like.

In order to prevent such contact, there has been proposed a solar power generation device in which a spacer is provided between the module frame and the gantry frame to raise the solar cell module and increase the space between the solar cell panel and the gantry frame. (For example, refer to Patent Document 1).

JP 2012-251304 A

However, if the solar cell module is raised with a spacer and installed, the appearance of the solar power generation device is deteriorated, and the design is deteriorated. Moreover, when the bending of the solar battery panel becomes too large, there is a concern that, for example, cell cracking is likely to occur, or the panel is dropped from the module frame.

A photovoltaic power generation apparatus which is one embodiment of the present disclosure is a solar cell module having a solar cell panel, a module frame provided at an edge of the panel, and a long pedestal frame attached to a roof. The gantry frame is disposed on the back side of the solar cell panel and on which the module frame is placed, and the buffer member provided between the back surface of the solar cell panel and the gantry frame at a position away from the module frame.

According to the photovoltaic power generation apparatus that is one aspect of the present disclosure, it is possible to prevent contact between the back surface of the solar cell panel and the gantry frame without deteriorating the design. Moreover, the excessive bending of a solar cell panel can be prevented.

It is a disassembled perspective view of the solar power generation device which is an example of embodiment. It is AA sectional view taken on the line in FIG. It is width direction sectional drawing of the mount frame which is an example of embodiment, and a buffer member. It is a figure which shows a mode that the solar cell panel bent in the solar power generation device which is an example of embodiment. It is a figure which shows the buffer member which is another example of embodiment. It is a figure which shows the buffer member which is another example of embodiment. It is a figure which shows the buffer member which is another example of embodiment. It is a figure which shows the buffer member which is another example of embodiment. It is a figure which shows the buffer member which is another example of embodiment. It is a figure which shows the solar power generation device which is another example of embodiment.

According to the photovoltaic power generation apparatus that is one aspect of the present disclosure, the buffer member provided between the back surface of the solar cell panel and the gantry frame prevents contact between the back surface of the panel and the gantry frame. That is, when the solar cell panel is bent due to the weight of snow, the back surface of the panel abuts against a buffer member interposed between the frame and the frame. Since the buffer member is softer than the gantry frame and is elastically deformed by contact with the panel, for example, the panel can be sufficiently prevented from being damaged. According to the photovoltaic power generation apparatus which is one aspect of the present disclosure, since the spacer for raising the solar cell module is not necessary, the module does not rise significantly from the roof, and the design is not deteriorated due to the use of the spacer. In addition, the buffer member widely contacts the back surface of the solar cell panel to support the panel, and prevents excessive bending of the panel.

Hereinafter, an example of an embodiment will be described in detail with reference to the drawings.
Since the drawings referred to in the embodiments are schematically described, the dimensional ratios of the components drawn in the drawings should be determined in consideration of the following description. In the present specification, the description of “substantially to” is intended to include the case where substantially the same is recognized as substantially the same as the case where substantially the same is described as an example.

In the embodiment illustrated below, an elongated frame is arranged along the eaves direction of the roof. And the direction of the buffer member along the eaves direction of the roof may be referred to as “vertical direction”, the direction of the buffer member along the girder direction of the roof (direction perpendicular to the eaves direction of the roof) is “lateral direction”, The direction of the buffer member along the direction perpendicular to the roof base plate is referred to as “vertical direction”. The longitudinal direction of the gantry frame and the vertical direction are the same direction, and the width direction of the gantry frame and the horizontal direction are the same direction. In the drawing, the direction of the eaves and the vertical direction of the roof are indicated by an arrow α, the girder and horizontal directions are indicated by an arrow β, and the vertical direction is indicated by an arrow γ.

FIG. 1 is a perspective view of a photovoltaic power generation apparatus 10 which is an example of an embodiment. As illustrated in FIG. 1, the solar power generation device 10 includes a solar cell module 11 and an elongated frame 30 attached to the roof. The solar cell module 11 includes a solar cell panel 12 and a module frame 13 provided at an edge portion of the panel. The gantry frame 30 is a long frame that is disposed on the back side of the solar cell panel 12 and on which the module frame 13 is placed. Further, the solar power generation device 10 includes a buffer member 14 provided between the back surface of the solar cell panel 12 and the gantry frame 30 at a position away from the module frame 13.

The solar power generation device 10 is configured by arranging a plurality of solar cell modules 11 side by side on a long frame frame 30 attached to a roof. As will be described in detail later, the solar power generation device 10 includes a first metal fitting 40, a second metal fitting 50, and a third metal fitting 60 as metal fittings for fixing the module frame 13 to the gantry frame 30. In addition, a fixing bracket (not shown) is used to attach the gantry frame 30 to the roof. The type of the fixing bracket is appropriately selected according to the structure of the roof.

The solar battery panel 12 is a substantially flat panel in which, for example, a plurality of solar battery cells are sandwiched between a glass plate and a resin back sheet. For example, the solar cell panel 12 is bent by the weight of snow accumulated on the panel, and the back surface comes into contact with the buffer member 14 when the deflection becomes large. The solar cell module 11 and the solar cell panel 12 have a substantially rectangular shape in plan view. The solar cell module 11 is arranged in a state in which the short sides thereof are substantially parallel to the eaves-ridge direction and the short sides of the adjacent solar cell modules 11 are substantially in contact with each other. Note that the solar cell module 11 may have a plan view shape other than a rectangle, or may have another shape such as a square.

The module frame 13 protects the edge of the solar cell panel 12 and is used for fixing the solar cell module 11 to the gantry frame 30. The module frame 13 is a long member formed by extruding a metal material such as aluminum. The module frame 13 includes two long side frames 20 provided along two long sides of the solar cell panel 12 and two short side frames 21 provided along two short sides. The long side frame 20 and the short side frame 21 are connected to each other by, for example, a corner piece and surround the four sides of the solar cell panel 12.

The gantry frame 30 is installed on the roof so that its longitudinal direction is along the eaves direction. The gantry frame 30 has a length that allows a plurality of solar cell modules 11 to be placed in the eaves-ridge direction. One solar cell module 11 is placed on two gantry frames 30 arranged substantially parallel to each other with an appropriate interval in the direction of the roof girder, for example. In one solar cell module 11, the gantry frame 30 is disposed over each long side frame 20, that is, over the entire length in the short side direction of the module.

The gantry frame 30 has an upper wall portion 31, a pair of side wall portions 32 formed substantially perpendicular to the upper wall portion 31, and a lower end of each side wall portion 32 formed substantially parallel to the upper wall portion 31. It is a frame of the hollow structure which has the lower wall part 33 to do. On the upper wall portion 31, a pair of flange portions 34 are erected. The upper wall portion 31 is longer in the width direction of the frame than the lower wall portion 33, and projects outward from the connection portion with each side wall portion 32, and a collar portion 34 is formed at the tip of the projected portion (described later). (See FIG. 3). The gantry frame 30 includes a guide rail portion 35 that slidably supports the first metal fitting 40, the second metal fitting 50, and the third metal fitting 60 along the longitudinal direction of the frame. The guide rail portion 35 includes an upper wall portion 31 and a flange portion 34 that stands on the upper wall portion 31.

The buffer member 14 is provided on the upper surface of the gantry frame 30 facing the back surface of the solar cell panel 12. As will be described in detail later, the buffer member 14 is mounted on the gantry frame 30 using the guide rail portion 35. The buffer member 14 is provided at a position facing the back surface of the solar cell panel 12 away from the long side frame 20. On the back side of one solar cell panel 12, at least the number of the buffer members 14 equal to or more than the number of the pedestal frames 30 arranged on the back side of the panel is provided and attached to all of the pedestal frames. In the solar power generation device 10, two buffer members 14 are provided on the back side of each solar cell panel 12. Each buffer member 14 is arranged side by side in the long side direction of the solar cell panel 12.

It is preferable that the buffer member 14 is provided in the central portion in the short side direction of the panel where the bending of the solar cell panel 12 is increased. The buffer member 14 is provided on each gantry frame 30 at a position approximately equidistant from each long side frame 20 (both ends in the short side direction of the solar cell panel 12). The buffer member 14 is not disposed under the long side frame 20, but may be disposed so as to contact the long side frame 20. However, in order to arrange the buffer member 14 efficiently, only the position in the vicinity of the back surface of the panel when the solar cell panel 12 bends and the vicinity thereof, in this embodiment, the central portion in the short side direction of the back surface of the panel It is preferable to arrange the buffer member 14 only at the facing position.

FIG. 2 is a cross-sectional view taken along line AA in FIG. As illustrated in FIG. 2, the long side frame 20 placed on the gantry frame 30 includes a main body portion 22, an inner groove 24 that houses the edge of the solar cell panel 12, and an outer side provided on the opposite side of the panel. It has the groove | channel 26 and the inner collar 27 protruded inside the module. The main body 22 has a hollow prismatic shape. The inner groove 24 is formed in the upper part of the long side frame 20, and the outer groove 26 and the inner collar 27 are formed in the lower part of the long side frame 20. The inner groove 24 is a groove opened on one side (inner side) in the width direction of the long side frame 20, and the outer groove 26 is a groove opened on the other side (outer side) in the width direction opposite to the inner groove 24.

The long side frame 20 has a flange portion 23 erected on the upper surface of the main body portion 22. The flange portion 23 extends straight upward from the outside of the main body portion 22 and is bent inward to have a substantially L-shaped cross section. Between the upper surface of the main body portion 22 and the flange portion 23, an inner groove 24 that is a gap into which the solar cell panel 12 can be inserted is formed. Further, the long side frame 20 has a flange portion 25 erected on the lower surface of the main body portion 22. The flange portion 25 extends straight downward from the inside of the main body portion 22, and is bent outward so as to have a substantially L-shaped cross section. An outer groove 26 is formed between the lower surface of the main body portion 22 and the flange portion 25 as a gap into which the first fixing bracket 40 and the second bracket 50 can be inserted.

The inner collar 27 extends from the lower side of the long side frame 20 toward the inside of the module, and is formed substantially perpendicular to the inner side wall of the long side frame 20. An inner collar 27 extends from the lower end of the portion along the vertical direction constituting the inner wall of the long side frame 20 in the collar portion 25, and the inner collar 27 is long along with the portion along the width direction of the collar portion 25. The bottom of the side frame 20 is configured.

As described above, the first metal fitting 40, the second metal fitting 50, and the third metal fitting 60 are installed on the guide rail portion 35 of the gantry frame 30. Each of the metal fittings is inserted between the upper wall portion 31 and the flange portion 34 constituting the guide rail portion 35, and is supported so as to be slidable in a state where it does not come out upward. A through hole through which the bolt 36 is inserted is formed in the first metal fitting 40, the third metal fitting 60, and the upper wall portion 31, and each metal fitting is positioned at a specific location on the upper wall portion 31 using the bolt 36. Is done.

The long frame 20 provided at the eaves side end of the solar cell module 11 is fixed to the gantry frame 30 using the first metal fitting 40. On the other hand, the long frame 20 provided at the ridge side end of the solar cell module 11 is fixed to the gantry frame 30 using the second metal fitting 50. Both the first metal fitting 40 and the second metal fitting 50 are inserted into the outer groove 26 of the long frame 20. The third metal fitting 60 is disposed inside the module from the long frame 20 at the ridge side end. The third metal fitting 60 projects over the inner collar 27 and engages with the second metal fitting 50.

Hereinafter, the buffer member 14 will be described in detail with further reference to FIG. As illustrated in FIG. 3, the buffer member 14 is attached on the upper wall portion 31 of the gantry frame 30. The buffer member 14 is made of resin as a main component, elastically deforms when the back surface of the solar cell panel 12 comes into contact, and supports the panel in a state where a load applied to the back surface of the panel is dispersed. That is, no large pressure is locally applied to the back surface of the solar cell panel 12 supported by the buffer member 14. The resin constituting the buffer member 14 may contain an inorganic filler or the like, but is preferably substantially composed only of a resin. Specifically, it is preferable that the buffer member 14 is made of an elastomer, rubber, or resin foam (including elastomer and rubber foam) that has elasticity at room temperature. Examples of the resin foam include foamed ethylene propylene rubber, foamed butyl rubber, and foamed urethane.

The buffer member 14 is longer in the vertical direction than in the horizontal direction and has a substantially rectangular shape in plan view (see FIG. 1 and the like). The buffer member 14 covers the upper surface of the gantry frame 30 including the flange 34 so that the back surface of the solar cell panel 12 does not come into contact with the gantry frame 30. The lateral length of the buffer member 14 is longer than the width of the gantry frame 30 and protrudes laterally from both sides of the gantry frame 30 in the width direction. By projecting the buffer member 14 from the gantry frame 30 in the lateral direction, the solar cell panel 12 can be prevented from coming into contact with the corners (the flanges 34) of the gantry frame 30 even when the buffer member 14 is greatly deformed. The overhang portion of the buffer member 14 extends downward and covers the side surface of the flange portion 34. The buffer member 14 may have a shape that goes around the lower surface side of the upper wall portion 31 and is hooked on the lower surface of the upper wall portion 31.

The length in the vertical direction of the buffer member 14 is, for example, 10% to 50%, preferably 20% to 40% of the length of the short side of the solar cell panel 12. The thickness (length in the vertical direction) of the buffer member 14 is set to such a thickness that the back surface of the panel does not contact the gantry frame 30 even when the buffer member 14 is greatly deformed by the contact of the solar cell panel 12. The thickness of the buffer member 14 is, for example, 5 mm to 20 mm at the thinnest portion.

The buffer member 14 is preferably provided away from the back surface of the panel when the solar cell panel 12 is not bent (see FIG. 2). Since the temperature of the solar cell panel 12 is increased by receiving sunlight, it is possible to suppress deterioration due to heat or the like of the buffer member 14 by separating the buffer member 14 from the back surface of the panel. The distance between the back surface of the solar cell panel 12 and the buffer member 14 is, for example, approximately the same as the vertical length of the main body 22 of the long side frame 20.

The buffer member 14 is inserted into the guide rail portion 35. The buffer member 14 is inserted between the pair of flange portions 34 and restrained in the lateral movement. Further, the buffer member 14 has a convex portion 15 that is inserted between the upper wall portion 31 and the flange portion 34. Since the convex portions 15 formed on both sides in the lateral direction of the buffer member 14 are inserted between the upper wall portion 31 and the flange portion 34, the buffer member 14 is difficult to be pulled upward. In other words, grooves in which the flanges 34 are inserted over the entire length in the vertical direction are formed at both ends in the horizontal direction of the buffer member 14.

The buffer member 14 is fixed to the upper surface of the gantry frame 30 using an adhesive 18. The adhesive 18 is not particularly limited as long as the buffer member 14 and the gantry frame 30 can be bonded. For example, a liquid or paste adhesive or a double-sided tape is used. The adhesive 18 is provided in a range that does not overlap with the lower groove 16 described later. The buffer member 14 is joined to, for example, the upper surface of the upper wall portion 31 and the upper surface of the flange portion 34.

The upper surface of the buffer member 14 is curved upward. The shape of the buffer member 14 is bilaterally symmetric with respect to the center line X, and the thickness of the buffer member 14 is thicker at the center in the horizontal direction than at both ends in the horizontal direction. By curving the upper surface in this way, the buffer member 14 can easily come into contact along the back surface of the bent solar cell panel 12, and the contact area between the back surface of the panel and the buffer member 14 can be increased. The contact area can also be increased by increasing the elasticity of the buffer member 14 to reduce the compressive stress. If the contact area of the back surface of the solar cell panel 12 and the buffer member 14 becomes large, the pressure concerning the back surface of a panel can further be relieve | moderated.

A lower groove 16 is formed on the lower surface of the buffer member 14 in the vertical direction, that is, in the longitudinal direction of the gantry frame 30. The lower groove 16 serves as a flow path for rainwater, snowmelt, and the like. The lower groove 16 forms a flow path of rainwater or the like between the buffer member 14 and the upper wall portion 31 of the gantry frame 30 and prevents the rainwater or the like from being blocked by the buffer member 14. The cross-sectional shape of the lower groove 16 is preferably a substantially semicircular shape in order to ensure the strength of the buffer member 14 and improve the shape stability. It is preferable to form a plurality of small lower grooves 16 on the lower surface of the buffer member 14 instead of forming one large groove.

The buffer member 14 is manufactured by a conventionally known method such as injection molding, compression molding, or transfer molding. A plurality of upper grooves 17 are formed on the upper surface of the buffer member 14 in order to improve shape stability during molding. As with the lower groove 16, the upper groove 17 is preferably formed over the entire length in the longitudinal direction of the buffer member 14.

FIG. 4 is a diagram showing a state in which the solar cell panel 12 is bent due to the weight of snow. As illustrated in FIG. 4, when snow accumulates on the solar cell panel 12, the solar cell panel 12 may be bent and greatly curved toward the back side. Since the module frame 13 provided at the edge of the solar cell panel 12 is placed on the gantry frame 30, a space is formed between the back surface of the solar cell panel 12 and the gantry frame 30. When the amount of snow accumulation increases and the deflection of the solar cell panel 12 increases, the space becomes narrower, and the back surface of the panel approaches the upper surface of the gantry frame 30 particularly at the center in the short side direction of the panel.

In the solar power generation device 10, as described above, the buffer member 14 is provided on the gantry frame 30 at a position facing the central portion in the short side direction on the back surface of the solar cell panel 12. For this reason, when the amount of snow accumulation increases and the deflection of the solar cell panel 12 increases, the back surface of the panel contacts the buffer member 14. That is, the buffer member 14 always exists between the back surface of the solar cell panel 12 and the gantry frame 30, and the back surface of the panel and the gantry frame 30 are not in direct contact. Further, since the buffer member 14 is provided on the two frame frames 30 arranged on the back side of the solar cell panel 12 along the long side direction of the panel, the back surface of the solar cell panel 12 has two buffer members. The member 14 is stably supported.

The buffer member 14 is elastically deformed by contact with the solar cell panel 12 and supports the panel so that a large pressure is not locally applied. Moreover, since the upper surface of the buffer member 14 is curved upward so as to follow the shape of the back surface of the solar cell panel 12, a large contact area between the back surface of the panel and the buffer member 14 is obtained, and the back surface of the panel is applied. The pressure is further relaxed. In addition, since the solar cell panel 12 abuts against the buffer member 14 and is supported in this manner when bent to some extent, excessive bending of the solar cell panel 12 is prevented. Thereby, generation | occurrence | production of a cell crack, drop-off | omission of a panel, etc. are prevented.

According to the solar power generation device 10, since the spacer for raising the solar cell module 11 is not necessary, the module does not rise significantly from the roof, and the design property is prevented from being lowered due to the use of the spacer.

5A to 5E are cross-sectional views showing

buffer members

70, 75, 80, 85, 88 which are other examples of the embodiment. Below, the same code | symbol is used for the component similar to the component of the buffer member 14, and a difference with the buffer member 14 is mainly demonstrated.

As illustrated in FIG. 5A, the buffer member 70 has a two-layer structure including a first resin portion 71 and a second resin portion 72. Different. The overall shape of the buffer member 70 is the same as that of the buffer member 14. The first resin portion 71 is elastically deformed by the contact of the solar cell panel 12. As with the buffer member 14, the first resin portion 71 is preferably made of an elastomer, rubber, or resin foam having elasticity at room temperature. The second resin portion 72 is provided on the back side (lower) of the first resin portion 71 and is harder than the first resin portion 71. The second resin part 72 is mainly composed of a resin having a higher elastic modulus and a larger compressive stress than the resin constituting the first resin part 71. The second resin portion 72 may not be elastically deformed by the contact of the solar cell panel 12.

In the buffer member 70, the upper part on the solar cell panel 12 side is constituted by the first resin part 71, and the lower part on the gantry frame 30 side is constituted by the second resin part 72, respectively. The buffer member 70 may be manufactured by separately manufacturing the first resin portion 71 and the second resin portion 72 and then joining them with an adhesive or the like. Preferably, the buffer member 70 includes two kinds of resin portions. It is integrally molded by injection molding using a resin material.

In the buffer member 70, the second resin portion 72 is fixed to the gantry frame 30. By using the hard second resin portion 72 for fixing the gantry frame 30, for example, the fixing property and durability of the buffer member 70 are improved. The second resin portion 72 is inserted into the guide rail portion 35 and joined to the upper surface of the gantry frame 30 using the adhesive material 18. Moreover, the convex part 15 is formed in the 2nd resin part 72, and since the convex part 15 is inserted between the upper wall part 31 and the collar part 34, the buffer member 14 becomes difficult to remove | deviate upwards. ing.

As illustrated in FIG. 5B, the buffer member 75 is common to the buffer member 70 in that it includes a first resin portion 76 and a second resin portion 77. On the other hand, the buffer member 75 is different from the buffer member 70 in that the second resin portion 77 is fixed to the gantry frame 30 using screws 90. The second resin portion 77 has a lateral length that is substantially the same as the interval between the tips of the pair of flange portions 34, and is fitted into the guide rail portion 35. However, since the convex portion 15 is not provided unlike the buffer member 70, the buffer member 75 can be easily detached from the guide rail portion 35 before screwing. In other words, the buffer member 75 can be easily installed on the gantry frame 30.

A recess 79 is formed in the central portion in the horizontal direction of the buffer member 75, and a screw 90 is attached to the recess 79. The concave portion 79 is formed by reducing the thickness of the second resin portion 77 without providing the first resin portion 76 at the central portion in the lateral direction of the buffer member 75. The head of the screw 90 is accommodated in the recess 79. The buffer member 75 is configured such that the screw 90 does not come into contact with the back surface of the panel even when the solar cell panel 12 comes into contact and the first resin portion 76 is greatly elastically deformed. The screw 90 penetrates the second resin portion 77 and the upper wall portion 31 of the gantry frame 30 and fixes the second resin portion 77 to the upper wall portion 31. The recess 79 is formed, for example, over the entire length in the vertical direction of the buffer member 75, and the buffer member 75 is attached with screws 90 at a plurality of locations separated in the vertical direction.

As illustrated in FIG. 5C, the buffer member 80 includes a first resin portion 81 and a second resin portion 82 that is harder than the first resin portion 81, and the second resin portion 82 uses screws 90. It is fixed to the upper wall portion 31 of the gantry frame 30. The form illustrated in FIG. 5C is different from the other embodiments in that the two buffer members 80 are separately fixed to both sides in the width direction of the gantry frame 30. In this case, the freedom degree of installation of the buffer member 80 improves.

In FIG. 5C, the buffer members 80 are fixed to both sides in the width direction of the single frame 30, but the buffer members 80 may be provided only on one side in the width direction. For example, the buffer member 80 may be installed only on the side closer to the center of the solar cell panel 12. That is, the buffer member 80 may be installed only on the side of the gantry frame 30 in the width direction where the solar cell panel 12 is easy to contact. Referring to FIG. 4, the buffer member 80 may be installed only on the left side on the gantry frame 30 on the right side of the paper, and the buffer member 80 may be installed on the right side of the gantry frame 30 on the left side of the paper.

5D, a metal plate 91 is joined to the back side (lower) of the buffer member 85. A metal plate 91 is fixed to the gantry frame 30. By using the metal plate 91 for fixing the gantry frame 30, for example, the fixability and durability of the buffer member 85 are improved in the same manner as the embodiment in which the second resin portion is provided. The metal plate 91 has a substantially flat base 92 and two legs 93 extending downward from both lateral ends of the base 92. The buffer member 85 to which the metal plate 91 is joined is provided on the gantry frame 30 with the base portion 92 placed on the flange portion 34 and the two leg portions 93 hooked on the side surfaces of the flange portions 34. . The metal plate 91 is joined to the upper surface of each flange 34 by the adhesive 18. The buffer member 85 is made of an elastomer or the like and covers the entire surface of the metal plate 91 including the leg portion 93. The upper surface of the buffer member 85 is curved upward, and a plurality of upper grooves 86 are formed on the upper surface.

The form illustrated in FIG. 5E is common to the form illustrated in FIG. 5D in that a metal plate 94 is joined to the back side of the buffer member 88. On the other hand, the metal plate 94 is different from the metal plate 91 shown in FIG. 5D in that the metal plate 94 is fixed to the upper wall portion 31 of the gantry frame 30 using screws 90. A concave portion 96 is formed in the base portion 95 of the metal plate 94 in the central portion in the horizontal direction. A screw 90 is attached to the recess 96. The head of the screw 90 is accommodated in the recess 96 as in the case of the buffer member 75.

In each of the above-described embodiments, the buffer member is provided on the gantry frame 30. However, as illustrated in FIG. 6, the buffer member 19 may be bonded to the back surface of the solar cell panel 12 using the adhesive 18. Good. The buffer member 19 is provided at a position facing the upper surface of the gantry frame 30 in the central portion in the short side direction of the solar cell panel 12. There is a space between the buffer member 19 and the gantry frame 30, and the buffer member 19 contacts the gantry frame 30 when the solar cell panel 12 is bent by the weight of snow. The buffer member 19 has, for example, a substantially rectangular parallelepiped shape, and is mainly composed of a resin that is elastically deformed by contact with the solar cell panel 12, for example, a resin that constitutes the first resin portion described above.

10 solar power generation device, 11 solar cell module, 12 solar cell panel, 13 module frame, 14, 19 cushioning member, 15 convex portion, 16 lower groove, 17 upper groove, 18 adhesive, 20 long side frame, 21 short side frame , 22 body part, 23, 25 collar part, 24 inner groove, 26 outer groove, 27 inner collar, 30 frame, 31 upper wall part, 32 side wall part, 33 lower wall part, 34 collar part, 35 guide rail part, 36 bolts, 40 first fitting, 50 second fitting, 60 third fitting, 70, 75, 80, 85, 88 buffer member, 71, 76, 81 first resin part, 72, 77, 82 second resin part, 78 lower groove, 86 upper groove, 79, 96 recess, 90 screw, 91, 94 metal plate, 92, 95 base, 93 leg

Claims

A solar cell module having a solar cell panel and a module frame provided at an edge of the panel;
A long frame frame attached to the roof, disposed on the back side of the solar cell panel, and the frame on which the module frame is mounted;
A buffer member provided between the back surface of the solar cell panel and the gantry frame at a position away from the module frame;
A solar power generation device comprising:
The solar power generation device according to claim 1, wherein the buffer member is provided on an upper surface of the mount frame facing the back surface of the solar cell panel.
The module frame includes two long side frames provided along two long sides of the solar cell panel, and two short side frames provided along two short sides,
The gantry frame is arranged over each long side frame,
The solar power generation device according to claim 2, wherein the buffer member is provided at a substantially equidistant position from the long-side frames on the gantry frame.
The buffer member includes a first resin portion that is elastically deformed by contact of the solar cell panel, and a second resin portion that is provided on the back side of the first resin portion and is harder than the first resin portion.
The solar power generation device of Claim 2 or 3 with which the said 2nd resin part is being fixed to the said mount frame.
A metal plate is joined to the back side of the buffer member,
The solar power generation device according to claim 2 or 3, wherein the metal plate is fixed to the gantry frame.
A metal fitting for fixing the module frame to the gantry frame is provided,
The gantry frame has a guide rail portion that slidably supports the metal fitting along the longitudinal direction of the frame,
The solar power generation device according to any one of claims 2 to 5, wherein the buffer member is inserted into the guide rail portion.
The solar power generation device according to any one of claims 1 to 6, wherein an upper surface of the buffer member is curved upward.
The solar power generation device according to any one of claims 1 to 7, wherein a groove along a longitudinal direction of the gantry frame is formed on a lower surface of the buffer member.