JPH1054111A - Tile with solar battery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To construct a tile that water flow in a flowing direction, especially a flow near a piled domain on a hip side may not stagnate in order to prevent water from leaking from the piled part. SOLUTION: In a tile with a solar battery, a working domain 11 is partially or wholly formed of a transparent member, and a translucent face 111 where solar battery elements are arranged is set under the working domain 11, and the translucent face sinks with difference in level formed in a flow direction to a piled domain face 12 on the upper side of flow direction. In addition, in the case where the shape of the working domain 11 on a tile surface, especially a shape in a width direction has a curved shape, the translucent face 111 is formed by combining one flat face in a flow direction and a plurality of flat faces in a width direction. In the case where the tile has a pantile shape, the translucent face is formed by combining two flat faces in a working width direction so that a section in the above direction may be about a V-shaped. In addition, similarly in the case where the tile is pantile-shaped, the translucent face is formed in a surface-shape where three flat faces are assembled in a working width direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tile-shaped solar cell module having compatibility with conventional tiles.

[0002]

2. Description of the Related Art At present, a rooftop-type system in which a flat panel-shaped solar cell module is installed on a roof has been put into practical use as a solar power generation system for houses.
Further, a system integrated with a roof building material has been developed for the purpose of reducing the price of the system and improving the beauty of the roof. In this roof building material-integrated system, the solar cell module has the function of a roof building material, and for example, a flat panel shape having a view similar to a slate tile roof has been developed. In addition, assuming that the shape of the conventional tile is taken over as it is, for example,
16, a structure in which a solar cell panel 6 is adhered to the surface of a tile main body 5 having a roof tile shape (see FIG. 14), and a roof tile-shaped transparent glass substrate disclosed in JP-A-60-35579. With an amorphous silicon solar cell element formed directly on the back of the device.
8-11261, a concave portion 9 on the surface of the tile body 5
A solar cell element 8 is incorporated therein, and the solar cell element 8 is covered with a transparent plate 7 (see FIG. 15).

[0003]

FIG. 16 is a perspective view showing a standard cross tile shape. The work area 1 is the surface of the tile
(A portion not shaded) and an overlapping region 2 (a portion shaded). When the roof is laid, adjacent tiles are overlapped on the overlapping region 2. By arranging the tiles on the roof in this way, the rain falling on the roof collects in the valley 15 in the working area 1 of the tiles, and flows from the butt 17 to the head 16 in the flow direction, The water flows successively on the adjacent tiles and is led to the eaves, preventing rain from leaking under the tiles and securing rainfall. By the way, in the case of the crosspiece of this example, the surface side is a flat linear shape in the cross-sectional shape in the flow direction of the tile, but in the working width direction, the valley 15 starts from the peak of the crosspiece 14, And it has a unique curve shape which becomes an upslope to the insertion part which becomes an overlap area. This is because the water in the width direction is collected in the valley to improve the flow of the water, and is formed to have an upward gradient over the overlapping region, thereby preventing water leakage at the overlapping portion. In the flow direction, the slope of the roof forms an upward slope from the working area 1 to the overlapping area 2 on the buttocks side, so that it is not necessary to make a slope on the tile itself, and the water at the overlapping area on the buttocks 17 side is not required. Leakage is prevented. As described above, in general, the surface of the tile is composed of the overlapping region and the working region, and the roof tiles are stacked on the surface of the overlapping region to ensure rainfall.
For this reason, in order to eliminate water leakage from the overlapping part,
It is effective to make the position of the overlapping area higher than the position of the working area. In particular, it is important to allow the water to flow smoothly in the flow direction of the tile while adopting such a structure.

An object of the present invention is to commercialize a solar cell module having a shape succeeding the shape of a conventional tile, that is, a tile with a solar cell, and in view of the above, to prevent water from leaking from an overlapping portion. Accordingly, it is an object of the present invention to provide a structure that does not block the flow of water in the flow direction, particularly the flow in the vicinity of the butt side overlapping region.

[0005]

SUMMARY OF THE INVENTION A tile with a solar cell according to the present invention has a tile surface consisting of an overlapping area and a working area, and tiles adjacent to each other are overlapped on the overlapping area to secure rainfall. A part or all of the working area is a transparent member, which is a light-transmitting surface on which a solar cell element is disposed, and the light-transmitting surface is located on the upper side of the overlapping area in the flow direction. It is characterized by falling down with a step in the flow direction.

In the case where the shape of the working area on the tile surface, particularly the shape in the width direction, has a curved shape, the light-transmitting surface is formed by combining one plane in the flow direction and a plurality of planes in the width direction. It is characterized by the following. In this case, the solar cell element below the light-transmitting surface is preferably arranged so that its surface is arranged along each plane so as to take the same shape as the light-transmitting surface. By doing so, the distance between the solar cell element surface and the light-transmitting surface becomes uniform over the entire device, and the thickness of the transparent member constituting the light-transmitting surface can be reduced. This is because the effect of the above can be reduced. As a method of combining a plurality of planes, for example, a method of bending one flat transparent plate or a method of connecting flat transparent plates may be used.

When the tile has a cross-tile shape, the light-transmitting surface is preferably formed by connecting two flat surfaces so that the cross section in the width direction is substantially V-shaped. By doing so, the elements can be efficiently arranged while leaving the cross section, which is a characteristic feature of the cross tile, remaining. In addition, the valley at the bottom of the V-shape formed by having a substantially V-shaped cross section constitutes the valley of the crosspiece, and the flow of water is also good. In particular, when an inflexible element such as a single-crystal silicon solar cell element or a polycrystalline silicon solar cell element is used, the arrangement of the elements can be reduced by arranging the elements in a plane along the light transmitting surface. This is more preferable because it becomes easier and the thickness of the transparent member constituting the light transmitting surface can be made thinner and uniform to improve the light use efficiency.

[0008] When the tile has a cross-tile shape as described above, the light-transmitting surface may be formed into a surface shape in which three planes work and are connected in the width direction. This is particularly suitable when using an element having no flexibility, such as a single-crystal silicon solar cell element or a polycrystalline silicon solar cell element, and light can be used to the maximum. This is because, in the case of a cross tile, three planes are required at a minimum if the working area surface is to be constituted by planes with the step of the present invention. That is, when an element having no flexibility is used, it is preferable that the light-transmitting surface has a shape obtained by combining flat surfaces, and the number of the light-transmitting surface should be small from the viewpoint of facilitating manufacturing as much as possible.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a first embodiment of the roof tile with solar cells of the present invention. FIG. 2 is a diagram showing only a cross section taken along the line AA of the tile. In FIG. 1, the surface of the tile is composed of a working area 11 (a part without hatching) and an overlapping area 12 (a part with hatching), and the working area 11 is composed of a light transmitting surface 111 and a beam surface 112. The shape of the part excluding the light transmitting surface 111 is JIS
This is a tile having the same shape as the 53A type tile. The light-transmitting surface 111 is made of a transparent member such as a glass plate, an acrylic plate, or a fluororesin film. The cross section of the light-transmitting surface 111 in the working width direction is substantially V in which two planes are connected in the working width direction.
It has a character shape, and a solar cell element is arranged below it. As shown in FIG. 1, the light transmitting surface 111 is stepped down in the flow direction with respect to the overlapping region surface on the upper side in the flow direction. That is, as shown in FIG. 2, the cross-sectional shape in the flow direction is such that the surface of the overlapping region 12 and the light-transmitting surface 111 have a step, and when viewed with the surface of the tile facing upward, the light-transmitting surface 111 is transparent. The light surface 111 is located below the surface of the overlapping region 12.

FIG. 3 is a perspective view showing a second embodiment of the roof tile with solar cells according to the present invention. In the figure, the surface of the tile is composed of a working region 31 (a portion not hatched) and an overlapping region 32 (a portion hatched), except for a stepped inclined surface 313 with the overlapping region 32 in the width direction. Thus, almost the entire surface of the working region 31 is a light-transmitting surface 311, and the shape of the portion excluding the light-transmitting surface 311 is a tile roof tile having the same shape as the JIS 53A type tile roof. The light-transmitting surface is made of a transparent member such as a glass plate, an acrylic plate, a fluororesin film or the like as described above, and has a surface shape in which three planes are connected in the width direction of the work of the tile, and the solar cell An element is provided. Compared with the first embodiment, the area of the light transmitting surface 311 is larger by the absence of the crosspiece surface, and there is no influence of the shadow by the crosspiece, so that the light receiving amount is increased.

As the solar cell element, a crystalline substrate-like element is used in such a manner that the advantages of this shape can be utilized to the utmost. In this case, it is preferable to arrange the light receiving surface of the solar cell element parallel to the light transmitting surface 311, and it is better to arrange three solar cell elements in the width direction. Also, it is preferable to arrange a number of elements corresponding to a required voltage in the flow direction, connect them in series, and connect three elements arranged in the width direction in parallel.

FIG. 4 is a perspective view showing a third embodiment of the roof tile with solar cells according to the present invention. In the figure, the surface of the tile is composed of a working area 41 (a part without hatching) and an overlapping area 42 (a part with hatching), and the working area 41 has a light transmitting surface 411, a beam surface 412, and a width. And the translucent surface 411 is formed at a position distant from the overlapping area 42, so that the working area 41 is a surface that smoothly extends from the overlapping area 42. I have. In the first and second examples, one light-transmitting surface is formed by combining two or three planes in the width direction and two or three planes in the width direction. The light-transmitting surface is made of a transparent member such as a glass plate, an acrylic plate, a fluororesin film or the like as described above, and a solar cell element is arranged thereunder. Note that the present embodiment and the above two embodiments are the same in that the light transmitting surface is formed by one plane in the flow direction. The shape of the part excluding the light transmitting surface 411 is J
This tile has the same shape as the IS53A type tile, and the area of the light-transmitting surface 411 is reduced. However, since the shape of the portion where the solar cell element is arranged can be made into one flat surface, the arrangement of the element can be achieved. In the case where an element having no flexibility is used, only one element can be used in the width direction, which is suitable for reducing the cost.

FIG. 5 is a perspective view showing a fourth embodiment of the roof tile with a solar cell according to the present invention. In the figure, the surface of the tile overlaps with the working region (the portion not shaded) 52
(Hatched portion), the entire surface of the working area is a light-transmitting surface 511, and the shape of the portion excluding the light-transmitting surface 511 has the shape of a so-called flat clay tile.

FIG. 6 is a perspective view showing a fifth embodiment of the roof tile with solar cells according to the present invention. In the figure, the surface of the tile overlaps with the working region (portion not shaded) 62
(Hatched portion), the entire surface of the working area is a light transmitting surface 611, and the shape of the portion excluding the light transmitting surface 611 has the shape of a slate tile.

FIG. 7 is a perspective view showing a sixth embodiment of the roof tile with solar cells according to the present invention. In the figure, the surface of the tile is composed of a working region 71 (a portion not hatched) and an overlapping region 72 (a portion hatched), excluding a step inclined surface 713 with the overlapping region 72 in the width direction. Thus, almost the entire surface of the working region 71 is a light-transmitting surface 711, and the shape of the portion excluding the light-transmitting surface 711 has the same shape as the cross tile. The light transmitting surface 711 is made of a transparent member such as a fluororesin film, and a flexible solar cell element such as an amorphous solar cell element is arranged below the transparent member along the surface shape of the light transmitting surface 711.

FIG. 8 is a schematic cross-sectional view for explaining a schematic cross-sectional shape in the flow direction when the tile is laid on the roof, and FIG. 8 (a) shows the six tiles according to the present invention described above. FIG. 4 (b) is not according to the present invention. For example, a solar cell panel is adhered to the surface of a tile body to form a step in the flow direction. Here are some of the exciting things. Figure (a)
As shown in FIG. 5, the light-transmitting surface 811 drops at the boundary between the overlapping region 82 on the upper side in the flow direction and the working region, so that water does not flow backward to the overlapping portion or accumulate at the boundary, Water will flow smoothly. On the other hand, if there is a bulging step as shown in FIG. 3 (b), a groove is formed at the boundary, and water is stagnant at this part, water flows backward to the overlapping part, and garbage tends to accumulate. Become.

FIG. 9 is a diagram for explaining the relationship between the position where the light transmitting surface 811 falls and the boundary position with the overlapping area 82. The falling position may be shifted inside (a) or outside (b) of the boundary position as shown in this figure, and may be determined according to the arrangement of the elements. It is good to set the vicinity of the boundary between the overlapping area and the working area as a fall position, and to secure the length of the overlapping area 81 to ensure waterproofing at the overlapping portion, so that it does not enter much inside. Good to do.

FIG. 10 is a diagram showing an example of a cross-sectional view of a tile including a light-transmitting surface in the flow direction. As shown in this figure, if the translucent surface 1011 falls down with a step on the overlapping region 102 side on the upper side in the flow direction, it may have an upward slope from the position toward the lower part in the flow direction. (A) Even if it becomes a mountain or (b), it may be any as long as the inclination is not too large and it is sufficiently away from the overlapping area 102.

[0019]

【Example】

Example 1 FIG. 11 is a schematic structural view for explaining a schematic structure of a tile with a solar cell according to an example of the present invention, wherein (a) is a perspective view,
(B) is an AA sectional view, and (c) is a BB sectional view.
FIG. 12 is a structural diagram of a solar cell module main body,
(A) is a perspective view, and (b) is an AA cross-sectional view. FIGS. 13A and 13B are structural diagrams of a tile-shaped outer frame to which a solar cell module main body is attached, wherein FIG.
) Indicates the lower frame.

As shown in FIG. 11 (a), the tile of this embodiment is a tile having a cross tile shape,
Is formed of a transparent member made of a bent transparent acrylic plate and serves as a light-transmitting surface 1111 below which a solar cell element is arranged. As shown in FIG. The light-transmitting surface 1111 is stepped down in the flow direction with respect to the overlapping region surface 112 on the upper side in the flow direction, and the light-transmitting surface 1111 is formed as shown in FIG.
As shown in (1), one plane is combined in the flow direction and two planes are combined in the width direction, and the cross section in the width direction has a substantially V shape. The tile according to the present embodiment is manufactured by first preparing a solar cell module main body 125 and then attaching the main body to an outer frame 135 having a cross tile shape.

The solar cell module body 125 is shown in FIG.
As shown in FIG. 5, a single-crystal silicon solar cell element 129 is attached to a transparent acrylic plate 126 bent so as to have a substantially V-shaped cross section via an ethylene vinyl acetate film 127, and further an ethylene vinyl acetate film It has a super-straight structure in which a film 128 having a structure in which an aluminum foil is sandwiched with a fluororesin film via 127 is attached. The total number of the solar cell elements 129 is two, two in the width direction and two in the flow direction. The two in the width direction are connected in parallel, and the two in the flow direction are connected in series.
The lead wire is drawn from the lower surface of the solar cell module main body 125.

The outer frame 135 is formed by molding an aluminum material. The surface of the outer frame 135 is colored gray after anodizing.
As shown in FIG. 13, the frame is divided into an upper frame 1351 (a) and a lower frame 1352 (b). When these frames are aligned up and down, an outer frame 135 having a shape like a tile with a square hole in the center is formed. The upper frame 1351 has an upper surface overlapping with the area surface 11.
2, the crosspiece surface 1112, and the downstream side pressing surface 1124,
An opening 0 is formed by the inclined surface 1123 and the portion where the light transmitting surface 1111 is formed. Also, the lower frame 1
Reference numeral 352 denotes a shape corresponding to the working area, whose lower surface is shaped according to the lower surface shape of the roof tile, and a portion where the adjacent tile does not overlap under the roof tile has an opening 0.
It has become. Outer frame 1 of solar cell module body 125
The boss 35 is attached to the upper frame 1351 and the lower frame 13 by engaging the butyl rubber 116 at the end of the module body 125.
After being sandwiched by 52, the upper and lower frames are tightened and fixed.

In this embodiment, the light transmitting surface 1111 in the flow direction is used.
Is made as long as possible in order to increase the amount of received light, and the cross-sectional shape in the width direction of the downstream-side pressing surface 1124 located on the head is formed substantially V-shaped in accordance with the light-transmitting surface 1111. As described above, by adjusting the shape of the step surface on the head side following the light transmitting surface to the shape of the light transmitting surface, it is possible to reduce the influence of the shadow on the head.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a roof tile with a solar cell of the present invention.

FIG. 2 is a diagram showing only the AA cross section of the tile according to the first embodiment of the tile with a solar cell of the present invention.

FIG. 3 is a perspective view showing a second embodiment of the roof tile with solar cells of the present invention.

FIG. 4 is a perspective view showing a third embodiment of the roof tile with solar cells of the present invention.

FIG. 5 is a perspective view showing a fourth embodiment of the roof tile with solar cells of the present invention.

FIG. 6 is a perspective view showing a fifth embodiment of the roof tile with solar cells of the present invention.

FIG. 7 is a perspective view showing a sixth embodiment of the roof tile with solar cells of the present invention.

FIG. 8 is a schematic cross-sectional view illustrating a schematic cross-sectional shape in a flow direction when a tile is laid on a roof.

FIG. 9 is a diagram illustrating the relationship between the position where the light transmitting surface falls and the boundary position between the overlapping region.

FIG. 10 is a diagram showing an example of a cross-sectional view of a tile.

FIG. 11 is a perspective view of a tile with a solar cell according to an embodiment of the present invention.

FIG. 12 is a structural view of a solar cell module main body.

FIG. 13 is a structural view of an outer frame in the shape of a tile tile to which a solar cell module main body is attached.

FIG. 14 is a diagram illustrating a structure of a roof tile with a solar cell conventionally proposed.

FIG. 15 is a view for explaining the structure of a conventionally proposed tile with a solar cell.

FIG. 16 is a perspective view showing the shape of a standard tile.

[Explanation of symbols]

11, 31, 41, 71, 111: working area 12, 32, 42, 52, 62, 72, 112: overlapping area 111, 311, 411, 511, 611, 711, 1
111: translucent surface 112, 412, 1112: crosspiece surface

Claims (4)

[Claims] 1. A tile in which the surface of a tile is composed of an overlapping area and a working area, and the roof tiles are adjacent to each other on the surface of the overlapping area to secure rainfall. It is a light-transmitting surface made of a transparent member and the solar cell element is disposed therebelow, and the light-transmitting surface falls down with a step in the flow direction with respect to the overlapping region surface on the upper side in the flow direction. Roof tiles with solar cells. 2. A roof tile with a solar cell according to claim 1, wherein the roof tile has a curved shape, and the light transmission surface is formed by combining one plane in the flow direction and a plurality of planes in the width direction. . 3. A tile having a cross-tile shape, wherein the light-transmitting surface has a substantially V-shaped cross-section in the width direction in which two planes are connected to a working width direction of the tile. Claim 2
A tile with a solar cell as described. 4. The solar cell according to claim 2, wherein the tile has a cross-tile shape, and the light-transmitting surface has a surface shape in which three planes are connected in the working width direction of the tile. With tile.