JP3615444B2 - Solar cell device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
[0002]
The present invention relates to a solar cell device using a solar cell module for building materials that can be used as a roofing material.
[Prior art]
[0003]
2. Description of the Related Art Conventionally, various apparatuses that perform solar power generation by arranging solar cell panels on a roof have been proposed. As for the installation method of these solar cell panels, install a frame on the roof tile and fix the solar cell panel on the frame, or spread a metal plate on the field plate and install the frame in this metal plate shape. In addition, there are a method of fixing the solar cell panel on the mount, a method of using the solar cell panel itself as a roofing material, and a method of spreading the solar cell panel on a field plate in the same manner as a tile.
[0004]
Japanese Unexamined Patent Publication No. 7-202242 (Int. Cl. H01L 31/042) discloses a structure in which a solar cell module itself is used as a roofing material and is mounted on a base plate.
[0005]
As shown in FIGS. 1 and 2, the solar cell module 30 used as the above-described roof material includes a solar cell panel 31 and an aluminum outer frame 32 attached to the outer peripheral portion thereof, and has a flat rectangular shape as a whole. I am doing. The solar cell panel 31 is connected between a front substrate made of tempered glass on the light-receiving surface side and a back film made of aluminum and a resin, in series or in parallel, by connection leads such as solder or copper foil. The solar cell element is sandwiched between and sealed with a resin such as EVA (ethylene vinyl acetate resin).
[0006]
The outer frame 32 has a cylindrical main body part 32a having a rectangular cross section to give rigidity, and extends from the outer peripheral part of the main body part 32a along the outer peripheral part of the solar cell panel 31, urethane resin, vinyl chloride resin, Alternatively, it includes a locking portion 32b for locking the solar cell panel 31 using a filler such as silicone resin, and a locking portion 32c protruding in an L-shaped cross section from the outer peripheral portion of the main body portion 32a. A groove 32d opened on the upper surface is formed by the stop portion 32c and the main body portion 32a.
[0007]
In addition, a terminal box 34 for deriving output is provided on the back side of the solar cell panel 31. And the positive / negative lead-out line from the solar cell panel 31 is each connected with the terminal in the terminal box 34 through the hole provided in the back surface film. Further, a pair of positive and negative power cables 34a are screwed or soldered to terminal portions in the terminal box 34 to be electrically connected and led out.
[0008]
Next, installation of the solar cell module described above on the roof will be described with reference to FIG. The above-described solar cell module 30 is laid by using the vertical member 20 on the base plate 42 fixed to the rafter 41 laid over the roof building material and the eaves material.
[0009]
In laying the solar cell module 30, first, the waterproof sheet 43 is disposed on the field plate 42. A plurality of vertical members 20 are attached on the roof base plate 42 in parallel with the inclination direction of the roof. As shown in FIG. 3, the vertical member 20 is a cylindrical body having a square section with an opening 21 on the upper side, a groove 22 is formed inside, and is fixed to a field plate 42 and a rafter 41 with anchor bolts 23. Yes.
[0010]
The solar cell module 30 is fixed to the vertical member 20 using a fixing bracket 50. The fixing bracket 50 includes a plate member 51 that partially closes the opening 21 from the inside of the vertical member 20, and a U shape that is U-shaped in cross section and engages with a locking portion 32 c of both outer frames 32 at both ends thereof. It is comprised by the character member 52 and the volt | bolt and nut 53 which fix both members.
[0011]
In order to lay the solar cell modules 30..., The outer frame 32 on the vertical side of the solar cell modules 30 is arranged so as to be parallel to the vertical member 20. Then, the adjacent solar modules 30 are fixed using the above-described fixing metal fitting 50. In this way, a plurality of solar cell modules 30 are laid on the roof. The space between the solar cell modules 30 is covered with a pressing member 60 made of vinyl chloride, polycarbonate or aluminum. The pressing member 60 includes a pair of clamping sides 61 that clamp and fix the inner side of the locking portion 32 b of the outer frame 32.
[0012]
Thus, the solar cell module 30 can be used as a roofing material by laying the solar cell module 30 on the roof base plate 42.
[Problems to be solved by the invention]
[0013]
In the building material solar cell module 30 described above, the surface substrate of the solar cell module 30 may be damaged due to the occurrence of a fire from an adjacent place. Considering that the surface substrate should be damaged, it is more preferable to improve the fire resistance on the side of the terminal box 34 located on the waterproof sheet 43 or the field plate 42 side.
[0014]
This invention is made in view of the conventional problem mentioned above, and provides the solar cell module for building materials which improved the fireproof with respect to the fire from an adjacent land, and a solar cell apparatus using the same. With the goal.
[Means for Solving the Problems]
[0015]
The solar cell device according to the present invention includes a solar cell panel and a frame provided on the outer periphery of the solar cell panel, and a solar cell in which a terminal box is disposed on a surface opposite to the light receiving surface side of the solar cell panel. A solar cell device comprising: a battery module; and a vertical member composed of a plurality of non-combustible members installed in parallel to the inclined surface of the roof along the inclined direction, and the solar cell module attached to the vertical member And at least one part of the vertical member is arrange | positioned between the said terminal box and the roof member, The said terminal box and the roof member are isolated by the nonflammable member, It is characterized by the above-mentioned.
[0016]
According to said structure, the fire prevention performance in the terminal box side improves by the vertical member located between a terminal box and a roof member, and the fire prevention characteristic with respect to the fire from an adjacent site improves.
[0017]
The solar cell device of the present invention includes a solar cell panel and a frame body provided on the outer periphery of the solar cell panel, and a terminal box is disposed on the surface opposite to the light receiving surface side of the solar cell panel. In the solar cell device in which the eaves-side end of another solar cell module disposed adjacent to the upper part of the ridge-side end of the frame body is disposed on the ridge-side end. Is provided with an extending portion extending to the ridge side, and the terminal box is disposed at a position located on the extending portion of the solar cell module disposed below.
[0018]
According to said structure, since the metal plate of the extension part of an outer frame is located under a terminal box, the fireproof property by the side of a terminal box can be improved with this metal plate.
DETAILED DESCRIPTION OF THE INVENTION
[0019]
Embodiments of the present invention will be described below with reference to the drawings. In addition , since the basic composition of a solar cell module is the same as that of a prior art example, the same code | symbol is attached | subjected to the same part.
[0020]
In the embodiment shown in FIG. 4 , the vertical member 20 for fixing the solar cell module 30 is used to isolate the terminal box 34 from the roof material such as the field plate 42.
[0021]
As shown in FIG. 4 , at least one of the vertical members 20 is configured to have a size that isolates the terminal box 34 of the solar cell module 30 fixed to the vertical member 20 so as not to directly face the field plate, A fireproof part 20a is provided. FIG. 4 is a cross-sectional view of the main part seen from the horizontal direction when the solar cell module according to the first embodiment of the present invention is installed on the roof. A part of the vertical member 20 made of metal is present at the location located in the case where the surface substrate of the solar cell module 30 is damaged in the event of a fire from an adjacent site. However, sufficient fire resistance is obtained by the presence of the vertical member 20 made of metal under the terminal box 34.
[0022]
Figure 5 is a second exemplary embodiment showing a solar cell module showing the configuration in FIG. 5 is a fragmentary cross-sectional view seen from the horizontal direction when installed on the roof of the invention, the longitudinal member 20 The fireproof part 20b is extended and provided. It arrange | positions so that the terminal box 34 of the solar cell module 30 may be located on this refractory part 20b.
[0023]
FIG. 6 is a schematic cross-sectional view at the position of the central portion of the solar cell panel for building materials showing the third embodiment of the present invention. The embodiment shown in FIG. 1 to FIG. 5 is formed so as to be arranged on the roof so that the solar cell modules 30 do not overlap each other, but the embodiment shown in FIG. 6 is such that the solar cell modules 30 overlap. It is an example arrange | positioned on the field plate 42 of a roof.
[0024]
As shown in the figure, the solar cell module 70 for building material shown in FIG. 6 is made of solder or copper foil or the like in series or in parallel between a surface substrate made of tempered glass and a back film made of resin-coated aluminum. It consists of a solar cell panel 71 on which solar cells made of crystalline silicon, amorphous silicon, etc., which are electrically connected by connecting leads, and an outer frame 72 attached around the solar cell panel 71. The solar cell panel 71 includes a sealing material made of ethylene vinyl acetate resin (EVA) between the front substrate and the solar cell and between the back film and the solar cell, and is integrated by the adhesive force of the sealing material. Has been.
[0025]
On the back side of the solar cell panel 71, a terminal box 34 for deriving output is provided. And the positive / negative lead-out line from the solar cell panel 71 is each connected with the terminal in the terminal box 74 through the hole provided in the back surface film. Furthermore, a pair of positive and negative power cables 74a are screwed or soldered to the terminal portions in the terminal box 34 to be electrically connected and led out.
[0026]
In the outer frame 72 in this embodiment, the shape of the eaves side end portion 72b and the ridge side end portion 72a are different, and the eaves side end portion 72b of the solar cell module 70 located above is located below the solar cell module 70. Is located on the ridge side end 72a of the ridge, and both ends are fixed. The ridge-side end portion 72a holds the eaves-side end portion 72b of the solar cell module 70 located on the upper side, and has an extending portion 72d that extends further to the ridge side than both engaging portions. The extending portion 72d is formed in a size that isolates the terminal box 74 provided on the back surface of the solar cell module 70 located on the upper side from the roof member such as the field plate 42, and constitutes a fireproof portion.
[0027]
Next, will be described with reference to FIG. 6 for an example of installation on the roof of the building material for a solar cell module 70 described above. In addition, this invention is not restricted to the aspect of installation shown below.
[0028]
First, the waterproof sheet 43 is provided on the field board 42, and the crosspiece 44 is fixed in a direction orthogonal to the inclined surface of the roof. The building material solar cell module 70 in the lower portion is fixed to the crosspiece 44 by a fixing hook portion 72c provided below the ridge side end portion 72a of the outer frame 72.
[0029]
Next, after the power cable 74a drawn out from the terminal box 74 is placed in a predetermined position, the eaves-side end portion 72b of the other building material solar cell module 70 located on the upper side (ridge side) is positioned below. After engaging with a predetermined place on the ridge side end 72 of the solar cell module 70 to be coupled to each other, the hook 44 for fixing provided on the crosspiece 44 below the ridge side end 72b of the outer frame 72 The building material solar cell module 70 in the lower part is fixed by the portion 72.
[0030]
Thereafter, the solar cell modules 70... Can be arranged in a tile shape on the base plate 42 by sequentially performing this operation.
[0031]
In the embodiment shown in FIG. 6 , the terminal box 74 is arranged on the back surface of the solar cell panel 71 at a position located in the extending portion 72 d of the building material solar cell module 70 arranged below.
[0032]
In the embodiment shown in FIG. 6 , since the metal plate of the extending portion 72d of the outer frame 72 is located under the terminal box 74, sufficient fire resistance can be obtained.
[0033]
In addition, since there is no metal plate under the terminal box 74 of the solar cell module 70 for building materials located on the most eaves side, it is better to place the metal plate on the base plate 42 in order to prevent fire. Good.
【The invention's effect】
[0034]
As described above, according to the present invention, according to the present invention, it is possible to provide an excellent solar cell device to fire performance.
[Brief description of the drawings]
[0035]
FIG. 1 is a plan view showing a solar cell module for building materials.
FIG. 2 is a side view showing a building material battery module.
FIG. 3 is a cross-sectional view of an essential part seen from the horizontal direction when the solar cell module is installed on a roof.
FIG. 4 is a cross-sectional view of the main part when viewed from the horizontal direction when the solar cell module according to the first embodiment of the present invention is installed on a roof.
FIG. 5 is a cross-sectional view of an essential part seen from a horizontal direction when a solar cell module according to a second embodiment of the present invention is installed on a roof.
FIG. 6 is a schematic cross-sectional view at the position of the central portion of a solar cell panel for building materials showing a third embodiment of the present invention.
[Explanation of symbols]
[0036]
30 Solar cell module 31 Solar cell panel 32 Outer frame 34 Terminal box
20 a refractory part

Claims (2)

A solar cell module comprising: a solar cell panel; and a frame provided on an outer periphery of the solar cell panel; a solar cell module in which a terminal box is disposed on a surface opposite to the light receiving surface side of the solar cell panel; A vertical member composed of a plurality of non-combustible members installed in parallel along the inclined direction, and a solar cell device in which the solar cell module is attached to the vertical member, the terminal box and A solar cell device characterized in that at least a part of a vertical member is disposed between a roof member and the terminal box and the roof member are separated by a non-combustible member. A solar cell module comprising: a solar cell panel; and a frame provided on an outer periphery of the solar cell panel, wherein a terminal box is disposed on a surface opposite to a light receiving surface side of the solar cell panel, and the frame In the solar cell device in which the eaves side end of another solar cell module disposed adjacent to the upper part of a part of the ridge side end of the ridge side, the ridge side end extends to the ridge side. The solar cell device is characterized in that the terminal box is disposed at a position located on the extended portion of the solar cell module disposed below.

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