JP2019071752A - Solar cell module and installation structure of solar cell module - Google Patents

Abstract

To make a light receiving surface wider compared to a conventional one, when a drain is provided between solar cell modules 1 laterally adjacent to each other in a structure holding a peripheral edge part of a solar cell module body 2 having a rectangular shape by long-sized frame pieces 10, 20, 30 and 40 and butting and fixing end parts of frame pieces adjoining to each other in a circumferential direction.SOLUTION: An Under-lapping portion (a lower side lateral wall portion 14) bending from a lower part of a first vertical wall portion 11, extending outside, and functioning as a drain is provided to a first frame piece 10 holding one marginal part on a short side of a solar cell module body 2. An overlapping portion (an upper side lateral wall portion 22) bending from an upper part of a second vertical wall portion 21 and extending outside is provided to a second frame piece 20 holding the other marginal part on the short side. A part of a light receiving surface of the module body 2 is arranged on the overlapping portion across the second vertical wall portion 21.SELECTED DRAWING: Figure 3A

Description

  The present invention relates to a solar cell module installed on a roof and an installation structure of the solar cell module, and in particular, a frame piece attached to two sides along the water flow direction in the peripheral portion of the rectangular solar cell module body. Pertaining to the structure.

  Conventionally, a tile-integrated solar cell module has been known in which a solar cell module is provided with a roof tile function and mixed with ordinary roof tiles. Such a tile-integrated solar cell module is installed on the roof base plate such that one of the four sides of the square solar cell module body on the eaves side is lower than the side on the opposite ridge side. The rain flows on the upper surface of the solar cell module in the direction of water flow from the ridge side of the roof to the eaves side, as with ordinary roof tiles.

  In order to install the solar cell module in such a manner, for example, Patent Document 1 holds the peripheral portion of the solar cell module main body with four elongated frame pieces, and ends of the frame pieces adjacent in the circumferential direction A structure is disclosed that butts and concludes. And in the first frame piece which holds one edge on the short side of the solar cell module main body, a lower overlapping piece which extends from the lower end toward the outside of the solar cell module main body and functions as a drainage channel Is provided.

  That is, a gap is formed between adjacent solar cell modules and roof tiles adjacent to each other in the horizontal direction, and in consideration of rainwater dripping from here, the rainwater flows on the lower overlap piece in the water flow direction It is made to flow to In addition, a second frame that holds the frame piece of another solar cell module adjacent in the side by side, that is, the other edge on the short side of the solar cell module main body, separately covering the lower overlapping piece above The piece is provided with an extension piece extending from the upper end portion of the solar cell module body to the outside.

JP, 2014-30013, A

  However, in the structure of the conventional example, the second extending piece provided in the second frame piece covers the lower overlapping piece provided in the first frame piece of another adjacent solar cell module from above, It is only to prevent the accumulation of Since the solar cell module main body is not placed on the second extension piece, the light receiving surface of the solar cell module main body is narrowed by the area, and the installation area of the solar cell module on the roof is reached. It is inevitable that the amount of electricity generated by

  The present invention has been made in consideration of such a situation, and its object is to provide a solar cell module having the same installation area as the conventional one in a structure in which a drain is provided between adjacent solar cell modules. In some cases, the light receiving surface is made wider than in the past.

  In order to achieve the above object, a solar cell module according to the present invention is installed on an installation surface on a roof, and has a rectangular solar cell module main body having a light receiving surface and a back surface, and the solar cell module It has a first frame piece and a second frame piece attached to two edges along the water flow direction of the roof in the main body.

  The first frame piece extends from the lower end of the first vertical wall extending downward with respect to the back surface of the solar cell module, and the lower end of the first vertical wall in the outer direction of the solar cell module main body. And a second vertical wall portion extending downward with respect to the back surface of the solar cell module, and an upper portion of the second vertical wall portion. And an overlap portion extending in an outward direction of the solar cell module main body, and a part of a light receiving surface of the solar cell module main body straddles the second vertical wall portion and It is characterized by being located at the top.

  Further, the present invention is an installation structure of a solar cell module in which the solar cell module as described above is installed adjacent to another solar cell module or a roof material, wherein the second structure of the other solar cell module An overlap portion of the frame piece or a portion of the roofing material disposed on the underlap portion of the first frame piece of the solar cell module, the outer end of the overlap portion of the second frame piece A part or an end of the roofing material may be spaced apart from the first vertical wall of the solar cell module.

  Furthermore, the present invention is an installation structure of a solar cell module in which the solar cell module as described above is installed adjacent to a roof material having another solar cell module or a gutter, wherein the other solar cell module The underlap portion of the first frame piece of the module or the gutter of the roofing material is disposed under the overlap portion of the second frame piece of the solar cell module, the other solar cell The first vertical wall of the module or the top end of the roofing material may be spaced apart from the end of the overlapping portion of the solar cell module.

  According to the installation structure of the solar cell module and the solar cell module in the present invention, the light receiving area of the solar cell module can be enlarged with the same size as the conventional one, whereby the installation area of the solar cell module on the roof is increased. Power generation can be improved.

FIG. 1 is a perspective view seen from a light receiving surface side showing an entire configuration of a solar cell module according to a first embodiment. It is the sectional view on the AA line of FIG. It is sectional drawing which shows the drainage between the solar cell modules arrange | positioned side by side. It is the FIG. 3A equivalent view at the time of a roof tile being arrange | positioned next to a solar cell module. It is the disassembled perspective view which looked at C part in FIG. 1 from the arrow c 1 direction. It is the disassembled perspective view which looked at D part in FIG. 1 from the arrow d 1 direction. It is the disassembled perspective view which looked at E part in FIG. 1 from the arrow mark e1 direction. It is the disassembled perspective view which looked at F part in FIG. 1 from the arrow f 1 direction. It is the BB sectional drawing of FIG. 1 which looked at the installed solar cell module from the right side. It is the FIG. 2 equivalent view which concerns on Embodiment 2 which does not provide a shallow groove part in an upper side horizontal wall part. It is the FIG. 2 equivalent view which concerns on Embodiment 3 which does not provide a support piece on the 2nd vertical wall part of a 2nd frame piece.

Embodiment 1
Hereinafter, a solar cell module according to Embodiment 1 of the present invention will be described with reference to the drawings. In addition, FIG. 1 is a perspective view which shows the whole structure of a solar cell module seeing from a light-receiving surface side, and expands the cross section in the AA of this FIG. 1, and it shows in FIG.

  The solar cell module 1 of this embodiment has a roof tile function by itself and is a tile integrated type in which it is mixed with general roof tiles and arranged on the roof, and appears in FIG. The solar cell module body 2 has a quadrangular solar cell module body 2 and a frame 3 for holding the entire peripheral edge portion. The solar cell module body 2 is a laminate of a light transmitting substrate on the light receiving side, a solar cell, and a back sheet for insulating protection of the back side (not shown), and they are mutually adhered by a sealing material There is. And when the sunlight which injected from the light-receiving surface of the solar cell module main body 2 hits a solar cell, electric power generation is performed. In the present embodiment, the type of solar cell used for the solar cell module body 2 is not particularly limited, and, for example, silicon-based solar cells such as single crystals, polycrystals and thin films, compound solar cells such as GaAs, CdTe and CdS, Dye-sensitized organic solar cells such as organic thin films and the like can be mentioned.

  The frame 3 is composed of four elongated frame pieces 10, 20, 30, 40 attached to the peripheral edge of the solar cell module main body 2, and ends adjacent to each other in the circumferential direction are screwed together It is fastened and fixed by a member or the like. Each of the frame pieces 10, 20, 30, 40 is formed, for example, by extrusion of an aluminum alloy, and the first frame piece 10 and the second frame piece 20 are formed on the left and right of the solar cell module body 2. It is attached to the edge of the two sides on both sides (edges on the short side). When the solar cell module 1 is installed on the roof, these two left and right sides are disposed along the water flow direction of the roof.

  On the other hand, the third frame piece 30 and the fourth frame piece 40 hold the edge on the long side of the solar cell module main body 2 and will be described later with reference to FIG. The third frame piece 30 attached to the edge of the eaves side is lower than the fourth frame piece 40 attached to the edge of the ridge side which is the opposite side So, installed along the slope of the roof. That is, the solar cell module 10 is installed on the roof such that the third frame piece 30 is on the lower side in the water flow direction of the roof and the fourth frame piece 40 is on the upper side in the water flow direction of the roof. Then, the eave-side ends of the first frame piece 10 and the second frame piece 20 are connected and fixed to the left and right end portions of the third frame piece 30, respectively, and these first frame piece 10 and the second frame The ridge-side ends of the pieces 20 are connected and fixed to the left and right ends of the fourth frame piece 40, respectively.

  Next, the structures of the first frame piece 10 and the second frame piece 20 will be described in detail with reference to FIGS. 3 is a cross-sectional view showing the structure between the solar cell modules arranged side by side, FIG. 4 is an exploded perspective view of part C in FIG. 1 seen from the direction of arrow c1, FIG. 5 is part D in FIG. 6 is an exploded perspective view of a portion E in FIG. 1 as viewed from the direction of arrow e1; FIG. 7 is a disassembled view of a portion F in FIG. 1 as viewed in the direction of arrow f1 It is a perspective view.

-First frame piece-
As shown on the left side of FIG. 2, the first frame piece 10 includes a first vertical wall portion 11 extending in the vertical direction in the cross section (the cross section orthogonal to the longitudinal direction). That is, the first vertical wall portion 11 extends downward with respect to the back surface of the solar cell module main body 2 and has an upper end portion on one side (inward direction of the solar cell module main body viewed from the first frame Hereinafter, a pair of upper and lower first holding pieces 12a and 12b extending toward the right side are provided. The first vertical wall portion 11 and the first holding pieces 12a and 12b are provided along the entire length of the first frame piece 10 in the longitudinal direction (the direction perpendicular to the paper surface of FIG. 2). The left side edge (one edge on the short side) of the solar cell module body 2 is fitted and held between 12a and 12b.

  Further, a screw groove portion 13 having a C-shaped cross section is provided from the lower surface of the lower first holding piece 12b to the side surface of the first vertical wall portion 11 among the pair of upper and lower first holding pieces 12a and 12b. There is. The screw groove portion 13 is also provided along the entire length of the first frame piece 10 in the longitudinal direction, and third and fourth frame pieces 30 and 40 and the first frame piece adjacent in the circumferential direction as described later. When connecting and fixing 10, the screw member 60 is screwed and fastened to both ends.

  On the other hand, the lower end portion of the vertical wall portion 11 extends from the lower end portion to the other side (outside direction of the solar cell module main body seen from the first frame piece and hereinafter referred to as the left side) A lower side wall portion 14 (under-lap portion) is provided which functions as a drainage channel for rainwater falling on the battery module 10. In addition, a lower extending piece 15 extending rightward from the lower end of the first vertical wall portion 11 is also provided, and the extending length is longer than the first holding pieces 12a and 12b. ing. The lower side wall portion 14 and the lower extending piece 15 are also provided along the entire length of the first frame piece 10 in the longitudinal direction.

  In the present embodiment, the inner end of the lower extension piece 15 protrudes upward, and enters from the gap between the edge of the solar cell module body 2 and the first holding pieces 12a and 12b. Rainwater drainage channels are formed.

  Then, as shown in FIG. 4, at one end (the end on the ridge side) of the first frame piece 10, the pair of upper and lower first holding pieces 12 a and 12 b are cut out by a predetermined length, One end of the fourth frame piece 40 (the end on the left side, which is the near side in FIG. 4) is fitted to the notched portion, and is fastened by the screw member 60. For this purpose, the fourth frame piece 40 is provided with two screw groove portions 42 so as to be sandwiched between the two fourth vertical wall portions 41, and the first frame piece 10 is correspondingly provided. Two screw holes 11 a are also provided in the first vertical wall portion 11 of FIG.

  Further, as shown in FIG. 5, at the other end (the end on the eaves side) of the first frame piece 10, the upper and lower pair of first holding pieces 12 a and 12 b are slightly cut away, and here The end of the third frame piece 30 is fitted to the second frame 30 and fastened by the screw member 60. For this purpose, the third vertical wall 31 of the third frame piece 30 is provided with a screw hole 31a corresponding to the screw groove 13 of the first frame piece 10, and these are put together and the screw member 60 is screwed in The first frame piece 10 and the third frame piece 30 are connected and fixed.

-Second frame piece-
On the other hand, the second frame piece 20 holding the right side edge (the other edge on the short side) of the solar cell module body 2 is a second frame piece extending vertically in the cross section as shown on the right side of FIG. A vertical wall 21 is provided. That is, the second vertical wall portion 21 extends downward with respect to the back surface of the solar cell module main body 2, and bends from the upper end portion thereof to the right side (from the second frame piece 20 The upper side wall 22 (overlap part) extended to the outside is provided. On the right side front edge portion of the upper lateral wall portion 22, there is provided a standing portion 23 erected upward, and a second holding piece 24 extending from the upper end portion to the left side which is the solar cell module body 2 side. ing.

  The second vertical wall portion 21, the upper lateral wall portion 22, the standing portion 23 and the second holding piece 24 are also provided along the entire length in the longitudinal direction of the second frame piece 20, and the second holding The right edge of the solar cell module body 2 is fitted between the piece 24 and the upper surface of the upper lateral wall 22 opposite to the lower surface thereof. That is, the edge portions of the standing portion 23, the second holding piece 24 and the upper lateral wall portion 22 constitute a holding portion into which the edge portion of the solar cell module body 2 is fitted.

  The upper side wall part 22 spaces apart the upper side of the lower side wall part 14 of the 1st frame piece 10, when another solar cell module 1 'adjacent to a horizontal alignment is arrange | positioned as it appears in FIG. 3A. Cover it. That is, by covering the upper side of the drainage channel (lower lateral wall section 14) which allows rainwater to flow down from the ridge side to the eaves side with the upper lateral wall section 22, the accumulation of waste on this drainage channel is suppressed, and the rainwater flow is I try not to be disturbed.

  Thus, the outer end of the upper lateral wall 22 covering the upper side of the drainage channel (lower lateral wall 14) and the first vertical wall 11 of the first frame piece 10 (a piece of the upper end thereof) adjacent thereto. Are separated such that a predetermined gap d is formed in order to absorb the displacement due to the thermal expansion of the first frame piece 10 and the second frame piece 20. Is dropped (shown as arrow W). Even when the first and second frame pieces thermally expand due to the gap d, it is possible to suppress application of a load to the adjacent solar cell module and the tile material. In order to reduce the amount of rainwater dropped, the gap d is preferably narrow.

  For this reason, as shown to the same figure, compared with the length L1 which the lower side horizontal wall part 14 extends from the 1st vertical wall part 11 of the 1st frame piece 10, the 2nd of the 2nd frame piece 20 The length L2 which the upper side horizontal wall part 22 extends from the vertical wall part 21 of this is set long. In this way, adjacent solar cell modules 1 and 1 'can be placed close to each other even if there is variation in the dimensions of each part of the first frame piece 10 and the second frame piece 20 and the assembly of the solar cell module 1 Thus, the gap d can be made sufficiently narrow.

  In addition, even when roof tiles are disposed adjacent to the solar cell modules 1 instead of the solar cell modules 1 ′, it is possible to cope with roof tiles having various shapes and sizes. That is, when an ordinary roof tile T is disposed on the right side of the solar cell module 1 as shown in FIG. 3B as an example, the gutter portion t1 provided one step lower on the left side of the roof tile T Even if the shape and thickness are various, if the upper lateral wall 22 is long enough, the solar cell module 1 and the roof tile T are brought close to each other, and the gutter t1 is likely to be accommodated below the upper lateral wall 22 It is from.

  Then, as a feature of the present embodiment, in the second frame piece 20, as shown in FIGS. 2 and 3, the solar cell module main body 2 in which the solar cells are disposed straddling the second vertical wall portion 21. A portion of the light receiving surface of the upper side wall 22 is disposed on the upper side wall 22. That is, as described above, the edge of the solar cell module body 2 is fitted between the upper surface of the upper lateral wall portion 22 and the lower surface of the second holding piece 24, and the back surface of the solar cell module body 2 is the upper side. It will be supported by the second vertical wall 21 via the horizontal wall 22.

  In addition, as shown in FIGS. 2 and 3 and the like, on the side of the standing portion 23 provided at the leading edge of the upper lateral wall portion 22, a screw groove located outside the edge of the solar cell module body 2 23a is provided. The screw groove 23 a is for fastening to the end of the third frame piece 30 as described later, and is provided over the entire length of the second frame piece 20 in the longitudinal direction.

  Furthermore, a lower extending piece 26 extending toward the left side is provided at the lower end portion of the second vertical wall portion 21, and the extending length is provided at the upper end portion of the vertical wall portion 21. The length is longer than the length of the support piece 25 extending to the left side (the inner side of the solar cell module body). A screw groove 27 having a C-shaped cross section is provided along the leading edge of the lower extending piece 26, and the lower extending piece 26 and the screw groove 27 are also used as the second frame piece 20. Is provided over the entire length in the longitudinal direction of the

  Thus, the screw groove 27 extending over the entire length of the second frame piece 20 is for fastening with the end of the third frame piece 30 in the same manner as the screw groove 23 a on the side of the standing portion 23 described above. It is a thing. That is, as shown in FIG. 6, at the right end of the third frame piece 30, two screw holes 31b are provided in the third vertical wall 31 corresponding to the screw grooves 23a and 27, and these are put together. The screw member 60 is screwed in to connect the second frame piece and the third frame piece.

  Further, as shown in FIG. 7, at the ridge-side end of the second frame piece 20, the second vertical wall 21, the upper horizontal wall 22, the lower extending piece 26, etc. are cut at predetermined lengths. The end portion of the fourth frame piece 40 (the right end portion on the near side in FIG. 7) is fitted into the notched portion, and the screw member 60 is fastened. For this purpose, two screw holes 23 b are provided in the standing portion 23 of the upper side wall portion 22 of the second frame piece 20 respectively corresponding to the two screw groove portions 42 of the fourth frame piece 40.

-Assembly of solar cell module and laying on roof-
When assembling the solar cell module 1 using the frame pieces 10, 20, 30, 40 described above, first, an end face sealing member (not shown) such as elastomer resin is installed on the peripheral portion of the solar cell module main body 2 Do. Subsequently, the edges of the two opposing sides are respectively fitted with the holding pieces 32a and 32b of the third frame piece 30 and the holding pieces 43a and 43b of the fourth frame piece 40, and the remaining two side edges are respectively , Fit with the holding pieces 12a and 12b of the first frame piece 10 and the holding piece 24 of the second frame piece 20.

  Then, the end portions of the frame pieces 10, 20, 30, 40 adjacent in the circumferential direction around the solar cell module main body 2 are butted, and as described above with reference to FIGS. To conclude. Thereby, as shown in FIG. 1, the four frame pieces 10, 20, 30, 40 constitute the frame 3 and are fixed to the peripheral portion of the solar cell module main body 2. That is, the solar cell module 1 is assembled.

  In this embodiment, the solar cell modules 1 assembled in this manner are sequentially laid from the eaves side to the ridge side on the roof of a house. That is, as shown in FIG. 8, when laying the roof on the base plate 100, the third frame piece 30 is disposed on the eaves side (left side in FIG. 8) which is the water flow direction lower side of the roof. The fourth frame piece 40 is disposed on the ridge side (right side in FIG. 8) which is the water flow direction upper side of the roof so that the fourth frame piece 40 is higher than the third frame piece 30. Install along the slope of the

  Then, on the fourth frame piece 40 of the solar cell module 1 laid on the eaves side, the third frame pieces 30 of the solar cell modules 1 adjacent to the ridge side are disposed so as to overlap, and the eaves side I will lay toward the ridge side from. That is, the mounting bracket 102 is fixed to the grate 101 on the base plate 100 by the screw member 110, and one end of the mounting bracket 102 is a locking piece provided on the lower portion of the fourth frame piece 40. Lock by 44.

  Next, the mounting piece 33 attached to the third frame piece 30 on the eaves side is fixed on the fourth frame piece 40 of another solar cell module 1 already laid on the eaves side. That is, as shown in FIG. 8, the mounting piece 33 is L-shaped in cross section, and the vertical wall portion thereof is overlapped and fastened to the third vertical wall portion 31 of the third frame piece 30. The lateral wall portion of the mounting piece 33 is superimposed on the fourth frame piece 40 from above, and is sandwiched and fixed to the fixing piece 45 provided on the upper side thereof.

  Thus, in the solar cell module 1, the fourth frame piece 40 on the ridge side is fixed to the gravel 101 on the roof plate 100 via the mounting bracket 102, while the third frame piece 30 on the eaves side is the eaves side Through the fourth frame piece 40 of another solar cell module 1 adjacent to the other solar cell module 1, fixed to the tile 101 of the base plate 100. In addition, illustration is omitted about the fixed structure of the 3rd frame piece 30 of the solar cell module 1 of the lowest row of the eaves side, and the fixed structure of the 4th frame piece 40 of the solar cell module 1 of the uppermost row of the ridge side. doing.

  As described above, in the solar cell module 1 according to the present embodiment, the frame 3 for holding the peripheral portion of the solar cell module main body 2 by combining the four elongated frame pieces 10, 20, 30, 40. Are configured. In the first frame piece 10, the lower side wall portion 14 functioning as a drainage channel is provided, and in the second frame piece 20, the lower side wall portion 14 of the adjacent solar cell module 1 'is covered. An upper lateral wall 22 is provided. Then, by arranging a part of the light receiving surface of the solar cell module main body 2 in which the solar cells are arranged also on the upper lateral wall portion 22, while making the solar cell module 1 have the same external dimensions as the conventional one, You can make the surface wider. Therefore, the amount of power generation per installation area of the solar cell module 1 can be increased.

Second Embodiment
It will be as follows if other embodiment of this invention is described. In addition, about the member which has the same function as the member demonstrated in the said Embodiment 1 for convenience of explanation, the same code | symbol is appended and the description is abbreviate | omitted. As shown in FIG. 9, in the second embodiment, the lower surface of the solar cell module main body 2 is supported by the support piece 25 (support portion) provided on the second vertical wall portion 21 of the second frame piece 20. It will be.

  Specifically, on the upper surface of the support piece 25 provided on the upper end portion of the second vertical wall portion 21, a flat support surface which is in surface contact with the lower surface of the solar cell module main body 2 is formed. Of the second frame piece 20 on the upper surface of the upper lateral wall 22 from 25 to the vicinity of the right front edge of the upper lateral wall 22, specifically to a portion corresponding to the left anterior edge of the second holding piece 24; A shallow groove 22a is formed extending over the entire length in the longitudinal direction.

  As shown in FIG. 9, the bus bar portion 2 a provided on the lower surface of the solar cell module body 2 is located above the shallow groove portion 22 a. Then, in general, a protrusion or the like may be formed on the bus bar portion 2a by soldering with the interconnector, and if this protrudes downward and contacts the upper surface of the upper lateral wall portion 22, a problem such as a short circuit may occur. There is. That is, when the frame 3 is configured by combining the four long frame pieces 10, 20, 30, 40 as in the present embodiment, for example, the deflection is likely to be large due to the weight of the snow cover and the like.

  On the other hand, in the present embodiment, the shallow groove 22a is provided on the upper surface of the upper lateral wall 22 so as to include the bus bar 2a, and the holding piece 24 is provided at the leading edge of the upper lateral wall 22 so as to sandwich the shallow groove 22a. Also, a support piece 25 is provided on the vertical wall portion 21 to support the solar cell module body 2. Thereby, the bending of the solar cell module main body 2 can be suppressed, and the protrusion of the bus bar portion 2 a can be prevented from contacting the upper side wall portion 22.

Third Embodiment
FIG. 10 shows the structure of the upper lateral wall 22 according to the third embodiment. As shown in FIG. 3, in the third embodiment, the support piece 25 is not provided on the second vertical wall 21 of the second frame piece 20, in other words, the shallow groove 22 a and the bus bar 2 a It is formed to the inner side of the solar cell module main body 2 rather than the site | part provided. Even with such a structure, when the solar cell module main body 2 is bent, the protrusion of the bus bar portion 2a can be prevented from contacting the upper side wall portion 22.

[Summary]
A solar cell module (1) according to aspect 1 of the present invention is a solar cell module main body (2) having a light receiving surface and a back surface, which is installed on an installation surface on a roof, and the solar cell module It has a first frame piece (10) and a second frame piece (20) attached to two edges along the water flow direction of the roof in the module body. The first frame piece is a first vertical wall portion (11) extending downward with respect to the back surface of the solar cell module, and a lower end of the first vertical wall portion of the solar cell module main body. And an outwardly extending underlap portion (14).

  Further, the second frame piece is a second vertical wall portion (21) extending downward with respect to the back surface of the solar cell module, and the upper portion of the second vertical wall portion of the solar cell module main body. And an overlap portion (22) extending in an outward direction, wherein a part of a light receiving surface of the solar cell module main body is positioned on the overlap portion across the second vertical wall portion. ing. In this way, the light receiving surface of the solar cell can be enlarged by arranging it also in the overlapping part.

  In addition, between the solar cell modules adjacent in such a lateral direction, the overlap portion is separated to cover the upper portion of the underlap portion functioning as a drainage channel, but the solar according to aspect 2 of the present invention In the battery module, by making the overlap part longer than the underlap part, it is possible to narrow the gap between the leading edge part of the overlap part and another solar cell module in close proximity.

  In the solar cell module according to aspect 3 of the present invention, when there is a bus bar portion (2a) on the back surface of the solar cell module main body located on the overlap portion of the second frame piece, the bus bar portion (2a) The recess (22a) is formed in the surface of the overlapping portion facing the back surface of the solar cell module main body so as to include the above. In this case, even if a protrusion or the like is formed by soldering on the bus bar portion, the protrusion or the like can be easily prevented from contacting the upper surface of the overlap portion.

  In the solar cell module according to aspect 4 of the present invention, a standing portion (23) extending upward at an outer leading edge portion of the overlap portion, and an upper end of the standing portion toward the solar cell module main body A holding piece (24) extending in a direction, the edge of the solar cell module main body being fitted to the holding portion constituted by the standing portion, the holding piece, and the overlapping portion, and the sun A support piece (25) in contact with the back surface of the battery module body is connected to the second vertical wall portion or the overlap portion and provided at a position inside the recess. In this case, the module body can be supported by the holding portion and the support portion at two places sandwiching the recess, and the deflection thereof can be suppressed.

  Furthermore, the solar cell module according to aspect 5 of the present invention is a third frame adjacent to the second frame piece fixed to an edge of a side of the solar cell module main body that intersects the water flow direction of the roof. A screw groove (23a) is provided on the side of the standing portion outside the end of the solar cell module main body, and the first screw member (60) is fastened to the screw groove. The second frame piece and the third frame piece are connected. As a result, screw members for fastening the ends of the two frame pieces will fasten those frame pieces within the thickness range of the solar cell module main body, thereby suppressing twisting of these frame pieces and holding them firmly. can do.

  According to another aspect of the present invention, the solar cell module (1) according to the aspect 1 is installed adjacent to another solar cell module (1 ′) or a roof material (T). It is an installation structure. And the overlap part of the said 2nd frame piece of said other solar cell module or a part (t1) of the said roof material is arrange | positioned on the said underlap part of the said 1st frame piece of the said solar cell module The outer end of the overlapping portion of the second frame piece or the end of the roofing material is installed apart from the first vertical wall of the solar cell module.

  From a different point of view, according to a seventh aspect of the present invention, the solar cell module (1) according to the first aspect further includes a roof material (T) having another solar cell module (1 ′) or a gutter (t1) It is an installation structure of the solar cell module installed adjacently. And the underlap portion of the first frame piece of the other solar cell module or the gutter of the roof material is disposed under the overlap portion of the second frame piece of the solar cell module The first vertical wall portion of the other solar cell module or the upper surface end of the roof material is disposed apart from the end of the overlapping portion of the solar cell module.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and embodiments obtained by appropriately combining the technical means disclosed in the different embodiments. Is also included in the technical scope of the present invention. Furthermore, new technical features can be formed by combining the technical means disclosed in each embodiment.

  For example, in each of the embodiments, the upper lateral wall 22 of the second frame piece 20 is provided to cover the upper side of the lower lateral wall 14 of the first frame 10 to be a drainage channel, as shown in FIG. As described with reference to the length L2 of the upper horizontal wall 22 extending from the second vertical wall 21, the length L1 of the lower horizontal wall 14 extending from the first vertical wall 11 It also has long. However, without being limited to this, the extension length L2 of the upper lateral wall portion 22 may be the same as the extension length L1 of the lower lateral wall portion 14 or may be shorter than that.

  Further, in each of the above embodiments, the screw groove 23a of the second frame piece 20 is provided on the side of the standing portion 23 of the upper lateral wall 22, but the present invention is not limited thereto. It may be provided at the site of Furthermore, although the tile-integrated solar cell module 1 is illustrated as a solar cell module in the present embodiment, the present invention can also be applied to a solar cell module that is not a tile-integrated type.

1, 1 'solar cell module 2 solar cell module body 2a bus bar portion 3 frame 10 first frame piece 11 first vertical wall portion 14 lower side wall portion (underlap portion)
20 second frame piece 21 second vertical wall 22 upper lateral wall (overlap portion)
22a Shallow groove (recess)
23 standing portion 23a screw groove portion 24 second holding piece 25 support piece (supporting portion)

Claims (7)

It is a solar cell module installed on the installation surface on the roof,
A rectangular solar cell module body having a light receiving surface and a back surface;
And a first frame piece and a second frame piece attached to two edges along the water flow direction of the roof of the solar cell module body,
The first frame piece extends from the lower end of the first vertical wall extending downward with respect to the back surface of the solar cell module, and the lower end of the first vertical wall in the outward direction of the solar cell module main body And an underlap portion to be
The second frame piece extends in the outward direction of the solar cell module main body from a second vertical wall extending downward with respect to the back surface of the solar cell module, and an upper portion of the second vertical wall. Have overlapping parts and
A part of the light-receiving surface of the said solar cell module main body is located on the said overlap part straddling the said 2nd vertical wall part top, The solar cell module characterized by the above-mentioned.   The solar cell module according to claim 1, wherein the overlap portion is longer than the underlap portion.   There is a bus bar portion on the back surface of the solar cell module main body located above the overlap portion, and a recess including the bus bar portion is provided on the surface of the overlap portion facing the back surface of the solar cell module main body The solar cell module according to claim 1 or 2. The outer leading edge portion of the overlap portion is provided with a standing portion extending upward, and a holding piece extending in a direction from the upper end of the standing portion toward the solar cell module body side,
An edge portion of the solar cell module main body is fitted in a holding portion constituted by the standing portion, the holding piece, and the overlapping portion;
The solar cell according to claim 3, wherein a support piece in contact with the back surface of the solar cell module body is provided at a position inside the recess and connected to the second vertical wall portion or the overlap portion. module. And a third frame piece adjacent to the second frame piece fixed to an edge of a side of the solar cell module body that intersects the water flow direction of the roof,
A screw groove is provided on the side of the standing portion outside the end of the solar cell module main body, and the second frame piece and the third frame piece are provided by a screw member fastened to the screw groove. The solar cell module according to claim 4, wherein are connected. An installation structure of a solar cell module, wherein the solar cell module according to claim 1 is installed adjacent to another solar cell module or a roof material,
An overlap portion of the second frame piece of the other solar cell module or a portion of the roofing material is disposed on the underlap portion of the first frame piece of the solar cell module;
The installation structure of the solar cell module by which the outer side edge part of the overlap part of the said 2nd frame piece or the edge part of the said roof material is spaced apart and installed with the said 1st vertical wall part of the said solar cell module. An installation structure of a solar cell module, wherein the solar cell module according to claim 1 is installed adjacent to another solar cell module or a roof material having a gutter.
The underlap portion of the first frame piece of the other solar cell module or the gutter of the roof material is disposed below the overlap portion of the second frame piece of the solar cell module;
An installation structure of a solar cell module, wherein the first vertical wall of the other solar cell module or an upper surface end of the roof material is installed apart from an end of the overlapping portion of the solar cell module .

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