JP6096618B2 - Solar array - Google Patents

Description

  The present invention relates to a solar cell array having a solar cell module.

  With the recent increase in environmental protection, solar power generation with a low environmental load has attracted attention. And the solar cell array installed in a roof attracts attention for the spread spread of photovoltaic power generation. Such a solar cell array is required to have a structure suitable for the characteristics of the roofing material.

  For example, a slate corrugated sheet is known as a kind of roofing material. A slate corrugated sheet is a roofing material in which reinforcing fibers are kneaded with cement and formed into a corrugated sheet shape, and is widely used in large buildings such as factories and warehouses. Usually, the roofs of factories and warehouses can secure a large light receiving area, and therefore, there is a strong demand for installing solar cell arrays on roofs with slate corrugated plates. On the other hand, since the strength of the slate corrugated sheet is lower than that of other types of roofing materials, the solar cell array is required to have a structure that can reduce the stress applied to the slate corrugated sheet.

  For example, in order to reduce the stress applied to the slate corrugated plate, a technique has been proposed in which the solar cell array is supported by a plurality of peaks of the slate corrugated plate and the stress is dispersed (for example, Patent Document 1 below) reference).

JP 2012-149411 A

  The solar cell array of the above-mentioned patent document has a structure that suppresses damage to the slate corrugated plate by dispersing the own weight and external force of the solar cell array to a plurality of peaks of the slate corrugated plate. However, since the strength of the slate corrugated sheet decreases with age, the waterproof structure of the roof may be damaged if a large load is applied to the aged corrugated sheet.

  The present invention has been made in view of the above-mentioned problems, and one of its purposes is to reduce the load applied to the slate corrugated sheet used as a roofing material by a simple structure and construction, and maintain long-term waterproofness. It is to provide a solar cell array that can be used.

A solar cell array of the present invention is a solar cell comprising a pedestal supported by a base and fixed on a slate corrugated plate having crests and troughs, and a solar cell module fixed to the pedestal. The support frame, the female screw member disposed above the slate corrugated plate, and the female screw member are fastened to each of the support member and the peak portion of the slate corrugated plate. A rod-shaped male screw member that is inserted, the male screw member having a first male screw portion fastened to the base at a portion including one end portion of the male screw member in the longitudinal direction, A portion including the other end portion has a second male screw portion fastened to the female screw member, and the support member is separated from the slate corrugated plate by fastening the female screw member and the second male screw portion. Firmly It is, has a concave portion for covering the ridges on the side facing the slate plate.

  According to the solar cell array having the above-described configuration, the support member can be fixed away from the slate corrugated plate by the second male screw portion provided at the other end of the male screw member, and the solar cell array's own weight or snow load The external force such as the above is supported by the base body, so that a large load is not applied to the slate corrugated plate.

  Thereby, it is possible to provide a highly reliable solar cell array capable of maintaining the waterproof property of the roof so that the slate corrugated plate is not damaged by the load applied from the solar cell array to the slate corrugated plate.

FIG. 1 is a perspective view showing a state in which a solar cell array according to an embodiment of the present invention is installed on a roof on which slate corrugated plates are spread. FIG. 2 is a diagram showing a solar cell module constituting a solar cell array according to an embodiment of the present invention, and FIG. 2 (a) is a plan view of the solar cell module viewed from the light receiving surface side. FIG. 2B is a cross-sectional view showing a cross section taken along the line AA ′ of FIG. FIG. 3 is a cross-sectional view of a solar cell array according to an embodiment of the present invention. FIG. 3A is a cross-sectional view showing a cross section taken along the line BB ′ of FIG. 1, and FIG. FIG. 2 is a cross-sectional view showing a cross section taken along the line CC ′ of FIG. 1. FIG. 4 is an exploded perspective view showing a solar cell array according to an embodiment of the present invention. FIG. 5 is a side view showing a male screw member extracted from the solar cell array according to the embodiment of the present invention. FIG. 6 is a perspective view showing a support member extracted from the solar cell array according to the embodiment of the present invention. FIG. 7 is a cross-sectional view of a solar cell array according to an embodiment of the present invention, and is a cross-sectional view seen at a cross-sectional position corresponding to FIG. FIG. 8 is a view showing a solar cell array according to another embodiment of the present invention, and is a cross-sectional view corresponding to FIG. FIG. 9 is a side view showing a male screw member and a first female screw member constituting a solar cell array according to another embodiment of the present invention. FIG. 10 is a view showing an externally threaded member of a solar cell array according to another embodiment of the present invention, FIG. 10 (a) is a side view corresponding to FIG. 5, and FIG. 10 (b) is FIG. It is sectional drawing in the surface containing the central axis of the external thread member of (a).

  Hereinafter, embodiments of a solar cell array according to the present invention will be described in detail with reference to the drawings. The drawings are schematically shown, and the size and positional relationship of various structures in each drawing can be appropriately changed.

<< First Embodiment >>
<Solar cell array>
As shown in FIG. 1, the solar cell array 1 is fixed on, for example, an inclined roof 2. The roof 2 includes a structural material 2a, which is a plurality of bases arranged in parallel to each other, and a slate corrugated plate 2b used as a roofing material that is inclined and fixed on the structural material 2a. The slate corrugated sheet 2b is a corrugated sheet roof material in which reinforcing fibers such as asbestos are kneaded with cement, and line-shaped ridges 2b1 and line-shaped valleys 2b2 are alternately arranged. When the roof 2 is viewed in plan, the row of the ridge portions 2b1 and the valley portions 2b2 of the slate corrugated plate 2b is arranged in parallel to the inclination direction of the slate corrugated plate 2b and is orthogonal to the structural material 2a. Has been placed. The structural material 2a is not particularly limited as long as it can support the slate corrugated plate, but is a lip groove steel made of a galvanized steel plate, for example.

  The solar cell array 1 includes a gantry 21 fixed on the slate corrugated plate 2 b and a solar cell module 10 fixed to the gantry 21.

  Hereinafter, the inclination direction of the roof 2 is referred to as the y-axis direction, the normal direction to the roof 2 is referred to as the z-axis direction, and the y-axis direction and the direction orthogonal to the z-axis direction are referred to as the x-axis direction. Also, the high slope side of the roof 2 is referred to as + y axis direction, the low slope side of the roof 2 is referred to as −y axis direction, and the direction from the roof 2 toward the solar cell array 1 is referred to as + z axis direction or above, and vice versa. This direction is referred to as the -z-axis direction or down.

<Solar cell module>
A solar cell module 10 that is a component of the solar cell array 1 will be described with reference to FIGS. 1 and 2. As shown in FIG. 1, the plurality of solar cell modules 10 are arranged along the x-axis direction and also arranged along the y-axis direction. As shown in FIG. 2, each solar cell module 10 includes a solar cell panel 11 and a frame 12 that reinforces the outer edge of the solar cell panel 11.

  As shown in FIG. 2B, the solar cell panel 11 includes a first main surface (light-receiving surface) 11a (one main surface of the translucent substrate 13) that mainly receives light, and the first main surface 11a. It has the 2nd main surface (non-light-receiving surface) 11b (one main surface of the back surface protection member 17) equivalent to a back surface. The solar cell panel 11 includes, in order from the first main surface 11a side, a translucent substrate 13 that also serves as a substrate of the solar cell module 10, a pair of sealing materials 14 made of a thermosetting resin, and a sealing material 14. And a plurality of solar cell elements 16 that are electrically connected to each other by the inner leads 15.

  Furthermore, the solar cell panel 11 includes a back surface protection member 17 that protects the back surface of the solar cell module 10 and a terminal box 18 for taking out the output obtained by the solar cell element 16 to the outside.

  In addition, the 2nd main surface 11b of the solar cell panel 11 has translucency, for example, each of the back surface protection member 17 and the sealing material 14 located between the solar cell element 16 and the back surface protection member 17 is. By comprising with such a material, the form which receives a part of light which injects from the 2nd main surface 11b side may be sufficient.

  The solar cell element 16 is a flat substrate made of, for example, single crystal silicon or polycrystalline silicon. When such a silicon substrate is used, the adjacent silicon substrates may be electrically connected by the inner leads 15 as described above.

  Further, the type of the solar cell element 16 is not particularly limited. For example, as the solar cell element 16, a thin film solar cell made of amorphous silicon, a CIGS solar cell, a CdTe solar cell, or a solar cell element 16 in which a thin film amorphous is formed on a crystalline silicon substrate may be used. For example, as the solar cell element 16 made of amorphous silicon, CIGS, and CdTe, an element in which an amorphous silicon layer, a CIGS layer, or a CdTe layer is appropriately laminated in combination with a transparent electrode or the like on the translucent substrate 13 is used. it can.

  The terminal box 18 has a modified polyphenylene ether resin (modified PPE resin) or polyphenylene oxide resin (PPO resin) box, a terminal plate disposed in the box, and an output for deriving power to the outside of the box. With cable.

The frame 12 has a function of holding the solar cell panel 11. The frame 12 includes a fitting portion 12a that is fitted to the solar cell panel 11, a frame upper surface 12b that is positioned on the side that receives sunlight, and a rear surface side of the frame upper surface 12b when the solar cell array 1 described later is installed. A frame lower surface 12c, and a frame upper surface 12b and a frame side surface 12d connecting the frame lower surface 12c. Such a frame 12 can be manufactured by extruding aluminum or the like.

<Stand>
Next, the mount 21 for fixing the solar cell module 10 to the roof 2 will be described in detail with reference to FIGS. As shown in FIGS. 1 and 3, the gantry 21 includes a male screw member 22 fixed to the roof 2, a female screw member 23, and a gantry main body 30 fixed on the male screw member 22 by being separated from the roof 2 by the female screw member 23. And.

<Male thread member>
As shown in FIGS. 3 to 5, the entire shape of the male screw member 22 is a rod shape, and a first male screw portion 22 a is formed at a portion including one end portion in the −z-axis direction (one end portion in the longitudinal direction). The second male screw portion 22b is formed at a portion including the other end portion in the + z-axis direction (the other end portion in the longitudinal direction). In addition, a cylindrical portion 22c not formed with a screw thread is disposed at an intermediate portion between the first male screw portion 22a and the second male screw portion 22b, and a hexagon bolt head is provided at an intermediate portion in the z-axis direction of the cylindrical portion 22c. And a hexagonal portion 22d having substantially the same shape. The cylindrical portion 22c may be a solid columnar shape.

  The first male screw portion 22a has, for example, a tapping screw thread that can be fastened while being cut into a female screw by itself by screwing into a pilot hole provided in the mating member. Moreover, the front-end | tip part of the 1st external thread part 22a is made into the cutting blade edge | tip or a drill screw, etc. in order to cut and fasten the other party member. The second male screw portion 22 b has a thread such as a metric screw or a unified screw that can be fastened to the female screw member 23. The cylindrical portion 22c has a larger diameter than the first male screw portion 22a and the second male screw portion 22b, and is a portion where no screw thread is provided. The hexagonal portion 22d is a portion approximate to the head of a hexagonal bolt provided in the cylindrical portion 22c, and is formed in a hexagonal shape corresponding to the standard of the threaded portion of the second male screw portion 22b in consideration of the standard of the hexagonal bolt. Good.

  As shown in FIGS. 3 and 4, the male screw member 22 is inserted through the first male screw portion 22 a at the top of the peak portion 2 b 1 of the slate corrugated plate 2 b of the roof 2 so as to be perpendicular to the main surface of the roof 2. The portion 2b11 is inserted and fastened to the structural member 2a. The hexagonal portion 22d is spaced apart from the peak portion 2b1 along the z-axis direction.

  Such a male screw member 22 can be formed using stainless steel or the like that has been subjected to a surface treatment using chromium plating or zinc.

<Female thread member>
The female screw member 23 is a nut that can be used in combination with the second male screw portion 22b. For example, when the second male screw portion is provided with an M8 screw portion, the female screw member 23 can be an M8 nut.

  The second female screw member 23 can be formed using stainless steel or the like that has been subjected to a surface treatment using chrome plating or zinc.

<Body body>
As shown in FIGS. 3 and 4, the gantry body 30 mainly includes a support member 31, a rail member 32, a fixing member 33, and a locking member 34.

  The support member 31 is a member that is fastened to the male screw member 22 and supports the rail member 32. As shown in FIGS. 3, 4, and 6, the support member 31 has a substantially Σ-shaped cross-sectional shape that opens upward, and the length in the y-axis direction is shorter than the rail member 32. Further, as shown in the cross-sectional view of FIG. 3A, the support member 31 has a concave portion 31a that is recessed upward at the center of the cross section. The width of the opening of the concave portion 31a is larger than the diameter of the second male screw portion 22b and smaller than the two-surface width of the hexagonal portion 22d.

  Thereby, as shown in FIG. 3, the supporting member 31 is supported by the hexagonal portion 22d at the inlet portion 31b which is the inlet of the concave portion 31a. In addition, when mounting a washer on the hexagonal part 22d, the width of the opening of the recessed part 31a should just be smaller than a washer.

  Further, the concave portion 31a has a first hole portion 31c having a size capable of inserting the second male screw portion 22b on the back side. Accordingly, the support member 31 is sandwiched and fixed between the hexagonal portion 22d and the female screw member 23.

  As described above, since the hexagonal portion 22d is spaced apart from the peak portion 2b1 of the slate corrugated plate 2b along the z-axis direction, the support member 31 is also spaced apart upward from the slate corrugated plate 2b. Fixed.

  In addition, the first support member 31 is alternately arranged on the side walls 31d on both sides in the x-axis direction with second holes 31f that are long in the z-axis direction and cut out in a U-shape from the upper end thereof, and irregularities in the z-axis direction. And a first serration unit 31e. Furthermore, the support member 31 has a skirt portion 31h that covers a portion between the top of the crest 2b1 and the bottom of the trough 2b2 of the slate corrugated plate 2b on the back surface 31g. Since the skirt portion 31h covers the periphery of the insertion portion 2b11 of the slate corrugated plate 2b, rainwater can be prevented from being blown into the indoor space from the insertion portion 2b11 and rain leakage.

  The rail member 32 is a member that is supported on the support member 31 and supports the solar cell module 10 from below. The rail member 32 has a substantially U-shaped cross-sectional shape opened downward as shown in FIG. 4 and has a length that is substantially an integral multiple of the length of the solar cell module 10 in the y-axis direction. It is a material. The rail member 32 has a first groove portion 32b whose entrance is narrower than the back side on the upper surface 32a, and the first groove portion 32b can be engaged so as not to come off the head of the first bolt 35a. Similarly, the rail member 32 has second groove portions 32d whose entrances are narrower than the back side on the side surfaces 32c on both sides in the x-axis direction, and can be engaged so as not to come off the head of the second bolt 35b. .

  The fixing member 33 is a member that sandwiches and fixes the solar cell module 10 on the rail member 32. The fixing member 33 has an L-shaped or substantially hat-shaped cross section as shown in FIGS. The fixing member 33 is fixed to the upper surface 32a of the rail member 32 by a first bolt 35a and a first nut 36a in a second hole 33b provided substantially at the center, and fixing portions 33a provided on both sides in the y-axis direction. The solar cell module 10 can be fixed by sandwiching the frame 12 of the solar cell module 10 with the upper surface 32 a of the rail member 32.

  The locking member 34 is a member that fastens and fixes the rail member 32 on the support member 31 at an arbitrary height. The locking member 34 has a plate shape. The locking member 34 has a second serration portion 34 a that can be engaged with the first serration portion 31 e of the support member 31 on the main surface on the side facing the support member 31. Further, the locking member 34 has a third hole 34b at a substantially central portion of the main surface thereof. While the second serration portion 34a is engaged with the first serration portion 31e of the support member 31 at an arbitrary height, the shaft portion of the second bolt 35b is connected to the second groove portion 32d of the rail member 32 and the first of the locking member 34. The rail member 32 can be fixed on the support member 31 at an arbitrary height by being inserted into the three holes 34b and fastened to the second nut 36b. Thereby, as shown in FIG. 7, the several slate corrugated board 2b is piled up by the y-axis direction, and the rail member 32 can be fixed to the roof 2 with a height difference with sufficient workability.

  Such support member 31, rail member 32, fixing member 33, and locking member 34 can be formed, for example, by extruding an aluminum alloy.

  In the solar cell array 1, the male screw member 22 has a first male screw portion 22 a having a tapping screw thread at one end and a second male screw portion 22 b that can be combined with the female screw member 23 at the other end. Then, the male screw member 22 is inserted into the insertion portion 2b11 provided in the slate corrugated plate 2b using the first male screw portion 22a through the waterproof cap 37, and is fastened to the structural member 2a while cutting the female screw. Thereby, it can attach easily from the roof 2 without the dubbing of a roof material, and the operation | work from an indoor side.

  Further, the male screw member 22 can support the gantry body 30 by being separated from the slate corrugated plate 2b by the second male screw portion 22b. Thereby, the flow of the load from the solar cell array 1 to the structural material 2a is in the order of the solar cell module 10, the gantry body 30, the male screw member 22, and the structural material 2a. Therefore, the load from the solar cell array 1 is less likely to be applied to the slate corrugated plate 2b.

  Thereby, the solar cell array 1 can be installed on the roof 2 with good workability while keeping the waterproof performance of the roof 2 by suppressing the load applied to the low strength slate corrugated plate 2b to the minimum.

<< Second Embodiment >>
Next, a solar cell array 1A according to the second embodiment will be described with reference to FIG.

  As shown in FIG. 8, the solar cell array of the second embodiment differs from the solar cell array of the first embodiment in the length of the male screw member 22.

  For example, when the structural material 2a has an upper plate portion 2a1 and a lower plate portion 2a2 like a groove shape steel such as a lip groove shape steel, as shown in FIG. 8, the first male screw portion 22a is an upper plate of the structural material 2a. You may have the length which penetrates the part 2a1 and the lower board part 2a2. Thereby, the 1st external thread part 22a has the penetration part to the several board part of the structural material 2a, and the fixed strength with respect to the stress added to the direction orthogonal to the longitudinal direction of the external thread member 22 increases, and the solar cell array 1 The fixing strength can be increased.

«Third embodiment»
Next, a solar cell array according to the third embodiment will be described.

  As shown in FIG. 9, the solar cell array of the third embodiment is different from the solar cell arrays of the first embodiment and the second embodiment in the structure of the male screw member 22.

  In the present embodiment, the male screw member 22 has only a cylindrical portion 22c at an intermediate portion between the first male screw portion 22a and the second male screw portion 22b. The hexagonal portion 22d shown in the first embodiment is separate from the first male screw member 22 and is a first female screw member 23a. The first female screw member 23a is a member having a female screw that can be combined with the second male screw portion 22b. For example, a hexagonal nut or a plate nut made of stainless steel can be used.

Thereby, the height of the gantry body 30 in the z-axis direction can be adjusted by adjusting the position of the first female screw member 23a in the z-axis direction along the second male screw portion 22b. Can increase the sex. In addition, since the height can be adjusted using the first female screw member 23a, the first serration portion 31e of the support member 31 and the second serration portion 34a of the locking member 34 may be omitted.

  The support member 31 is supported by the first female screw member 23a combined with the second male screw portion 22b, and the first female screw member 23a is supported by the second female screw member 23b (not shown) combined with the second male screw portion 22b. The support member 31 can be clamped and fixed. The second female screw member 23b can be a member similar to the female screw member 23 of the first embodiment.

<< Fourth Embodiment >>
Next, the solar cell array which concerns on 4th Embodiment is demonstrated using FIG.

  As shown in FIG. 10, the solar cell array of the fourth embodiment is different from the solar cell array of the first to third embodiments in the structure of the male screw member 22.

  In the present embodiment, the male screw member 22 is composed of a plurality of members. More specifically, the male screw member 22 includes a tapping screw member 22f having a first male screw portion 22a and a head portion 22e, a long screw bolt member 22g which is a second male screw portion 22b having no head portion, and a tapping screw member 22f. The connecting member 22h connects the long screw bolt member 22g. The connecting member 22h is a cylindrical member, and has an inner wall formed with a female screw portion 22i that engages with the second male screw portion 22b. The first male screw portion 22a can be inserted into one end of the connecting member 22h, and the head portion 22e can be inserted. A fourth hole 22j that cannot be provided is provided. Thus, the male screw member 22 may be composed of a plurality of members.

  Thereby, since the length of the 1st external thread part 22a can be easily changed according to the shape of the structural material 2a or the slate corrugated sheet 2b, workability | operativity can be improved.

  As mentioned above, although embodiment which concerns on this invention was illustrated, this invention is not limited to embodiment mentioned above, For example, even if this invention is applied with respect to the stand with which the supporting member and the rail member were integrated, for example Needless to say, any modifications can be appropriately made without departing from the object of the present invention.

1: Solar cell array 2: Roof 2a: Structural material 2a1: Upper plate portion 2a2: Lower plate portion 2b: Slate corrugated plate 2b1: Mountain portion 2b11: Insertion portion 2b2: Valley portion 10: Solar cell module 11: Solar cell panel 11a : Light receiving surface 11b: Non-light receiving surface 12: Frame 12a: Fitting portion 12b: Frame upper surface 12c: Frame lower surface 12d: Frame side surface 13: Translucent substrate 14: Sealing material 15: Inner lead 16: Solar cell element 17: Back surface protection member 18: Terminal box 21: Stand 22: Male screw member 22a: First male screw portion 22b: Second male screw portion 22c: Cylindrical portion 22d: Hexagonal portion 22e: Head portion 22f: Tapping screw member 22g: Long screw bolt member 22h : Connecting member 22i: female screw portion 22j: fourth hole portion 23: female screw member 23a: first female screw member 23b: second female screw portion 30: Stand body 31: Support member 31a: Concave portion 31b: Entrance portion 31c: First hole portion 31d: Side wall 31e: First serration portion 31f: Second hole portion 31g: Back surface 31h: Skirt portion 32: Rail member 32a: Upper surface 32b: 1st groove part 32c: Side surface 32d: 2nd groove part 33: Fixing member 33a: Fixing part 33b: 2nd hole part 34: Locking member 34a: 2nd serration part 34b: 3rd hole part 35: Bolt 35a: First bolt 35b: Second bolt 36: Nut 36a: First nut 36b: Second nut 37: Cap

Claims (6)

A solar cell array comprising: a base supported by a base and fixed on a slate corrugated plate having a peak and a valley; and a solar cell module fixed to the base,
The gantry includes a support member, a female screw member disposed above the slate corrugated plate, and a bar-like member that is fastened to the female screw member and inserted into each of the support member and the peak portion of the slate corrugated plate. A male screw member,
The male screw member has a first male screw portion fastened to the base at a portion including one end portion in the longitudinal direction of the male screw member, and is fastened to the female screw member at a portion including the other end portion in the longitudinal direction. A second male threaded portion,
The support member is fixed at a position away from the slate corrugated plate by fastening the female screw member and the second male screw portion, and a concave portion that covers the peak portion on the side facing the slate corrugated plate is provided. A solar cell array.   2. The solar cell array according to claim 1, wherein the male screw member has the first male screw part as a tapping screw.   The solar cell array according to claim 1, wherein the male screw member is combined with a plurality of parts. The support member has a skirt portion which covers a portion between the bottom of the the top portion of the crest of the slate plate valleys, solar cell array according to any one of claims 1 to 3 . The female screw member has a first female screw portion and a second female screw portion, the first female screw portion is located on the lower surface side of the support member, and the second female screw portion is located on the upper surface side of the support member. located, the first sandwiching the support member in the female screw portion and the second female threaded portion, a solar cell array according to any one of claims 1 to 4. When the grooved steel having the upper plate part and the lower plate part is used as the base body, the first male screw part has a length penetrating the upper plate part and the lower plate part of the grooved steel. The solar cell array according to any one of claims 1 to 5 .

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