JP2000257230A - Roof having solar cell - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roof having solar cells in which less margin portions without solar cell panels are left, and a roof surface is effectively utilized. SOLUTION: A plurality of solar cell panels 10 to convert the solar beam into the electric power are provided on a roof having solar cells. A plurality of kinds of solar cell panels 10A, 10B different in output voltage are provided as a plurality of solar cell panels 10, and these solar cell panels 10A, 10B are combined with each other to form a plurality of solar cell groups G1-G4. These solar cell groups G1-G4 are same in output voltage. The whole roof area can be effectively utilized since the small solar cell panels 10B are installed in a margin area left behind after the solar cell panels 10A as many as possible are installed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solar cell-mounted roof to which a solar cell panel for generating electricity with sunlight is attached.

[0002]

2. Description of the Related Art Conventionally, solar energy has been known as energy that does not adversely affect the environment and ecosystems. Solar cell energy conversion such as a solar cell that converts this solar energy to use as electricity or hot water. There is a device. Such devices are typically installed on the roof of a building. When installing solar cells on the roof, it is necessary to prevent accidents such as short circuit and short circuit due to water, and the solar cells, which are solar cells, are placed inside a flat waterproof case and the solar panel It is preferable to install as. This solar cell panel has a predetermined number of solar cells so that a predetermined voltage and power can be obtained by one sheet (Japanese Patent Application Laid-Open No. 9-3245).
No. 13).

[0003]

In such a solar cell panel, a plurality of solar cell panels having the same shape are attached to a roof so that a predetermined voltage and power can be obtained. There is a margin where a panel cannot be attached, and there is a problem that a roof having a sufficient area in terms of numerical values cannot obtain sufficient electric power. When such a margin becomes large, the margin must be covered with a normal roofing material, so that the roofing work and the waterproofing work increase the on-site work, and the roof assembling work becomes complicated. Also occurs. Here, the size and shape of the solar cell panel do not always match the roof surface, and a margin is inevitably generated. For this reason, the roof facing the south side has a large amount of solar radiation,
Although the amount of electric power obtained by the solar cell panel is large, the roof surface facing the south side may not be used as effectively as possible due to the above-mentioned problem.

[0004] It is an object of the present invention to provide a roof with solar cells in which the margin where solar cell panels are not arranged is reduced.

[0005]

The present invention will be described with reference to the drawings. In order to convert sunlight into electric power, the present invention relates to a solar cell-mounted roof 4 provided with a plurality of solar cell panels 10. There are a plurality of types of solar panels 10B, 10B having different output voltages
C, 10D, and a plurality of solar cell groups G1, G2, G
3, G4 are formed, and these solar cell groups G1, G
2, G3 and G4 have the same output voltage. In the present invention, the solar cell groups G1, G
2, G3, and G4 have the same output voltage, the photovoltaic panels G1, G2, G3, and G4 are provided as photovoltaic panels, and the photovoltaic panels 10 have different light receiving areas and shapes.
Even if B, 10C, and 10D are included, no problem occurs. For this reason, the standard photovoltaic panel 10A is installed on the roof surface and the remaining margin is replaced with the photovoltaic group G
If a solar panel having a light receiving area divided by the number of 1, G2, G3, G4 is installed, the entire roof surface can be effectively used, and the shape of the solar panel 10 can be arbitrary, so that the design is different. Can easily accommodate rooftops.

In the above, as the solar cell panel 10,
It is preferable that a light receiving area different from that of other solar cell panels is included. In this way, the solar cell groups G1, G2, G3, and G4 are formed to include the solar cell panels having a smaller light receiving area than the standard solar cell panel 10. When the solar cell 10B, 10C, 10D with a small light receiving area can be installed in the margin, even if the standard solar cell panel 10 cannot be installed any more, Can be used effectively.

Further, it is preferable that the solar cell panel includes a solar cell panel having a plane shape different from that of another solar cell panel. By doing so, a solar cell group is formed including solar cell panels having a shape different from that of the standard solar cell panel 10A. Therefore, when the standard solar cell panel 10A is installed on the roof surface, the remaining margin is reduced. Even if the shape of the part does not match the standard solar cell panel and the standard solar cell panel 10A cannot be installed any more, the solar cell panel 10B, 1 according to the shape of the remaining margin part
The entire roof surface can be effectively used by allowing 0C and 10D to be installed in the margins. For example, when a standard square solar cell panel 10A with a wing roof is installed, a triangular blank portion is formed at the edge of the roof surface. By installing panels in the margins, the entire roof surface can be used effectively. Also, solar cell panels 10B, 10B having a shape corresponding to a margin where standard solar cell panel 10A cannot be installed.
By preparing various C and 10D, it is possible to support various roofs with different designs.

Further, the solar cell groups G1, G2, G
3 and G4 are the solar cell groups G1, G2 and G, respectively.
3. The type and number of the solar cell panels constituting G4 may be the same. By doing so, the solar panels constituting the solar cell groups G1, G2, G3, G4 are unified, so that the characteristics of the solar cell groups such as output power and internal resistance with respect to the amount of received light are uniform, and the temperature and solar radiation are uniform. Even if environmental conditions such as change, the solar cell panel can be operated stably.

The type and number of the solar cell panels 10 constituting the solar cell groups G1 and G4 are the same as those of the other solar cell groups G2 and G2.
It may be different from G3. By doing so, it is possible to adopt a solar cell panel having a different light receiving area and shape from the solar cell panels forming the other solar cell groups as the solar cell panels forming one solar cell group, and furthermore, The number of installations is also the other solar cell group G1,
G2, G3, and G4 can be different. As a result, even when the roof has a complicated shape, such as a dormer or the like, a plurality of solar cell groups G having the same output voltage can be obtained by combining various solar cell panels having different light receiving areas and shapes.
1, G2, G3, G4 can be formed, and the entire roof surface can be effectively used.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a unit-type building 1 according to a first embodiment of the present invention. The unit building 1 is a combination of a plurality of box-like building units 2 and 3 manufactured in advance in a factory. A plurality of lower-floor building units 2 are arranged on the first floor portion of the unit-type building 1, and a plurality of upper-floor building units 3 are arranged on these lower-floor building units 2. On these upper-floor building units 3, a roof 4 is provided. The roof 4 is a gable roof having roof surfaces 4N and 4S formed in a rectangular shape. Of the roof surfaces 4N and 4S, a plurality of solar cell panels 10 are mounted on a roof surface 4S facing the south side via a rail-shaped mounting member (not shown). The roof 4 is formed of a plurality of roof panels (not shown). These roof panels are manufactured in advance at a factory.

As the solar cell panel 10, a standard solar cell panel 10A formed in a square shape with one side having a dimension a is different from the solar cell panel 10A in shape and has a short side and a long side. An auxiliary solar cell panel 10B formed in a rectangular shape is provided. The number of solar cell panels 10A is greater than the number of auxiliary solar cell panels 10B. The area of the solar cell panel 10A is set so as to output a predetermined current at a predetermined voltage when receiving sunlight under predetermined conditions. The auxiliary solar cell panel 10B has a smaller area than the solar cell panel 10A, and is set to output a lower voltage and a smaller current than the solar cell panel 10A when receiving sunlight under a predetermined condition. The long side of the auxiliary solar cell panel 10B has the same dimension a as one side of the solar cell panel 10A,
The shorter side has a dimension b shorter than the dimension a. At this time, the small auxiliary solar cell panel 10B is to be installed in a narrow margin where the large solar cell panel 10A cannot be arranged after installing as many solar cell panels 10A as possible on the roof surface 4S.

These solar cell panels 10A, 10B
Are arranged along the inclination direction and are arranged in eight rows in the beam direction. Here, these solar cell panels 10A and 10B constitute one solar cell group for every two rows. Thus, four solar cell groups including the first solar cell group G1, the second solar cell group G2, the third solar cell group G3, and the fourth solar cell group G4 are formed. Each of the solar cell groups G1 to G4 has five solar cell panels 10A and two solar cell panels 10A.
Two rows of B are provided, and a total of 10 solar cell panels 10A and 4 solar cell panels 10B are provided. The ten solar cell panels 10A and the four solar cell panels 10B provided in each of the solar cell groups G1 to G4 are electrically connected in series. The solar cell groups G1 to G4 are electrically connected to each other in parallel. By combining each of the solar cell groups G1 to G4 in this manner, a plurality of types of solar cell panels 10 having different light receiving areas and planar shapes are provided.
Even if A and 10B are mixed, these solar cell groups G
Since each of 1 to G4 has the same type and number of solar cell panels 10A and 10B constituting the group, the output voltages thereof are the same.

According to this embodiment as described above, the following effects can be obtained. That is, a plurality of types of solar cell panels 10A and 10B having different output voltages are provided as the solar cell panel 10 on the roof surface 4S, and a plurality of solar cell groups G1 to G4 are formed by a combination of these solar cell panels 10A and 10B. And the output voltages of these solar cell groups G1 to G4 are made the same, so that all the solar cell panels 10 provided on the roof surface 4S are formed.
Power can be effectively extracted from A and 10B.

As the solar cell panel 10, a standard solar cell panel 10A and this solar cell panel 10A
Since the solar cell panel 10B having a smaller area than the solar panel 10B is provided, as many solar cell panels 10A as possible
After the installation at S, the small solar panel 10B can be installed in a narrow margin where the large solar panel 10A cannot be arranged, and the entire roof surface 4S can be used effectively.

Further, each of the solar cell groups G1 to G4 has the same type and number of the solar cell panels 10A and 10B constituting the solar cell groups G1 to G4. ~ G
No. 4 has uniform characteristics such as output power and internal resistance with respect to the amount of received light, and can stably operate the solar cell panels 10A and 10B even when environmental conditions such as temperature and solar radiation change.

FIG. 2 shows a second embodiment of the present invention. In the second embodiment, the standard solar cell panel 10A and the auxiliary solar cell panel 10B are mixed in one line in the first embodiment, but separately from the line of the solar cell panel 10A. The auxiliary solar cell panel 10C is arranged around the roof surface 4S. In FIG.
A plurality of standard solar cell panels 10A are arranged in a main portion of the roof surface 4S so as to be arranged in five columns and eight columns. Two long and thin rectangular auxiliary solar cell panels 10C are arranged on each end of the roof surface 4S on the wife side, and four auxiliary solar cell panels 10C are arranged on the ridge side edge, which are the same as those on the wife side. Have been. The dimension c of the long side of the auxiliary solar cell panel 10C is set to a dimension 2a which is twice as large as one side of the solar cell panel 10A, and the dimension d of the short side is the short side of the auxiliary solar cell panel 10B of the first embodiment. The dimension d is shorter than the dimension b. This small auxiliary solar panel 10C is
Similar to the above-mentioned auxiliary solar cell panel 10B, after as many solar cell panels 10A as possible are installed on the roof surface 4S, they are installed in a narrow margin where the large solar cell panel 10A cannot be arranged.

Here, these 40 solar cell panels 1
OA and eight auxiliary solar cell panels 10C are divided into ten and two, respectively, to form four solar cell groups G1 to G4. That is, the first solar cell group G1 includes two rows of solar cell panels 10A arranged near the left edge of the wife side on the left side in the figure, and two auxiliary solar cell panels arranged near the same wife edge. 10C. The second solar cell group G2 includes the first solar cell group G2.
Has two rows of solar cell panels 10A arranged on the right side in the figure of the solar cell panel 10A of the solar cell group G1 and two auxiliary solar cell panels 10C on the left side in the figure on the ridge side edge. ing.

The third solar cell group G3 includes two rows of solar cell panels 10A arranged on the right side of the solar cell panel 10A of the second solar cell group G2 and the right side of the ridge side edge in the figure. It has two auxiliary solar cell panels 10C. The fourth solar cell group G4 is
It has two rows of solar cell panels 10A arranged near the wife side edge on the right side in the figure, and two auxiliary solar cell panels 10C arranged near the wife side edge. As described above, each of these solar cell groups G1 to G4 is configured such that the types and numbers of the solar cell panels 10A and 10C are the same, and the output voltages are set to be the same.

In the second embodiment, the same operation and effect as those of the first embodiment can be obtained. In addition, the dimension d of the short side of the auxiliary solar cell panel 10C is changed to the auxiliary solar cell of the first embodiment. Since the shorter side dimension b of the battery panel 10B is shorter than the short side dimension b, the auxiliary solar cell panel 10C is installed even when the remaining margin where the solar cell panel 10A is installed on the roof surface 4S is narrower than in the first embodiment. This makes it possible to effectively use the entire roof surface 4S.

FIG. 3 shows a third embodiment of the present invention. In the third embodiment, the roof 4 with solar cells of the gable type in the first and second embodiments is replaced with a roof 5 with a solar cell of the ridge type. That is, in FIG.
The roof 5 has four roof surfaces 5E, 5W, 5S, 5N facing east, west, north and south respectively. Among them, the central part of the roof surface 5S having a convex shape has 30 standard solar cell panels 10A arranged in 6 rows and 5 rows, and these 30 solar panels 10A. On each side of the battery panel 10 on the eaves end side, there are provided three solar cell panels 10A which are vertically arranged respectively.

At each edge of the roof surface 4S along the descending ridge 6, two triangular auxiliary solar cell panels 10D are arranged along the descending ridge 6. Auxiliary solar panel 1
The dimension of the bottom of 0D is the dimension a of one side of the solar cell panel 10A, and the height dimension e is the size of the solar cell panel 10A.
The dimension 3a is three times as large as one side. Similar to the auxiliary solar panels 10B and 10C, this triangular auxiliary solar panel 10D has a triangular shape in which a large solar cell panel 10A cannot be arranged after installing as many solar panels 10A as possible on the roof surface 4S. Is set in the margin.

Here, these 36 solar cell panels 1
OA and four auxiliary solar cell panels 10D are divided into nine and one, respectively, to form four solar cell groups G1 to G4. That is, the first solar cell group G1 has a total of nine solar cell panels 10A arranged in three rows and columns near the upper end of the downhill 6 on the left side in the figure.
And one auxiliary solar cell panel 10 </ b> D disposed above the vicinity of the descending ridge 6. The second solar cell group G2 includes a total of six solar cell panels 10A arranged in three vertical rows and two horizontal rows on the right side of the solar cell panel 10A of the first solar cell group G1 in the drawing, and these six solar cell panels 10A. It has three solar cell panels 10A arranged side by side along the lowermost row, and one auxiliary solar cell panel 10D arranged above the vicinity of the descending ridge 6 on the right side in the figure.

The third solar cell group G3 has nine solar cell panels 10A arranged in three rows and columns near the lower end of the downstream building 6 on the left side in the figure, and is disposed below the vicinity of the downstream building 6. And one additional solar cell panel 10D. The fourth solar cell group G4 has a total of six solar cell panels arranged in two columns and three rows below three solar cell panels 10A arranged beside the second solar cell group G2. 10A, three solar cell panels 10A vertically arranged below the auxiliary solar cell panel 10D of the second solar cell group G2, and one solar cell panel arranged below the vicinity of the descending ridge 6 on the right side in the figure. And an auxiliary solar cell panel 10D. Thus, each of these solar cell groups G1 to G4 is configured such that the types and numbers of the solar cell panels 10A and 10D are the same, and the output voltages are set to be the same.

In the third embodiment, the same operation and effect as those of the first and second embodiments can be obtained. In addition, even when the roof 5 is a ridge-type roof and a triangular blank portion is formed,
Since the triangular solar cell panel 10D according to the shape of the margin is employed, the roof solar panel 4C is installed by installing the triangular solar cell panel 10C in the margin.
The entire S can be used effectively. For this reason, even if it corresponds to the blank part of the shape where the standard solar cell panel 10A cannot be installed, it is possible to cope with it even with various roofs having different designs.
The entire surface of the roof surface 5S can be used effectively.

FIG. 4 shows a fourth embodiment of the present invention. In the first to third embodiments, the solar cell groups are assembled such that the types and the numbers of the solar cell panels as the constituent elements are the same as each other, whereas in the fourth embodiment, the solar cell panels And solar cell groups that include different types and numbers. That is, in FIG. 4, each of the first and fourth solar cell groups G <b> 1 and G <b> 4 formed on the roof surface 4 </ b> S has four triangular auxiliary solar cell panels 10 </ b> E arranged along the descending ridge 6.
And six standard solar cell panels 10A arranged stepwise below these auxiliary solar cell panels 10E. Second and third solar cell groups G
Each of 2 and G3 has a total of 8 solar cell panels 10A arranged in 2 rows and 4 columns between the first and fourth solar cell groups G1 and G4.

Here, the dimension of the bottom side and the height dimension of the auxiliary solar cell panel 10E are set to the dimension a of one side of the solar cell panel 10A.
E has a light receiving area that is half that of the solar cell panel 10A. Electrically, the configuration is such that two auxiliary solar cell panels 10E are connected in series, and have the same characteristics as one solar cell panel 10A. Thereby, the first and fourth solar cell groups G1,
The output voltage of G4 is equivalent to eight solar cell panels 10A, which is the same as the output voltage of the second and third solar cell panels G2 and G4. Triangular auxiliary solar panel 10
E is the auxiliary solar panel 10B, 10C, 10
Like D, after installing as many solar cell panels 10A as possible on the roof surface 4S, the large solar cell panels 10A are installed in a triangular blank area where they cannot be arranged.

In the fourth embodiment as described above,
In addition to the same effects as the first to third embodiments, the following effects can be obtained. That is, the solar cell groups G1 and G4 are different from the solar cell groups G2 and G3 in the type and the number of the solar cell panels as the constituent elements.
As the solar cell panel constituting the solar cell 4, a solar cell panel 10E having a different light receiving area and shape from the solar cell panel 10A constituting another solar cell group can be adopted. For this reason, even in the case of a roof with a complicated shape, combining various solar cell panels with different light receiving areas and shapes,
A plurality of solar cell groups G1, G2, G having the same output voltage
Since 3, G4 can be formed, the entire roof surface can be effectively used.

It should be noted that the present invention is not limited to the above-described embodiment, but may be any other range within which the object of the present invention can be achieved.
The following modifications are included. That is,
The standard solar panel is not limited to a square-shaped panel, but may be a rectangle having a long side and a short side, a hexagon, an equilateral triangle, or a circle. it can. In addition, the auxiliary solar cell panel is not limited to a rectangular shape having a long side and a short side and a right triangle, but may be a parallelogram, a trapezoid,
The shape may be hexagonal, equilateral triangular, or circular, and the shape of the auxiliary solar cell panel may be appropriately selected for implementation.

Further, the solar cell group is not limited to a combination of two types of solar cell panels having different sizes and shapes, and may be a combination of three or more types of solar cell panels having different sizes and shapes. Also, as the roof,
The roof is not limited to the gable type and the ridge type, but may be other types of roofs. Furthermore, not only the roof of the unit type building 1 but also a roof of a building made of a conventional method of joining columns and beams at a building site. Good.

[0030]

According to the present invention, it is possible to dispose a solar cell panel in a margin portion, the margin portion where the solar cell panel cannot be disposed is reduced, and the roof surface can be more effectively used.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a unit-type building according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a unit-type building according to a second embodiment of the present invention.

FIG. 3 is a perspective view showing a unit-type building according to a third embodiment of the present invention.

FIG. 4 is a front view showing a roof surface according to a fourth embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Unit-type building 4,5 Roof with solar cell 4S, 5S Roof surface 10 Solar cell panel 10A Standard solar cell panel 10B-10E Solar cell panel G1, G2, G3, G4 whose output voltage differs from a standard thing Solar cell group

Claims (5)

[Claims] 1. A roof with solar cells provided with a plurality of solar cell panels for converting sunlight into electric power, wherein the plurality of solar cell panels have different output voltages as the plurality of solar cell panels. A roof with solar cells, comprising a panel, wherein a plurality of solar cell groups are formed by a combination of these solar cell panels, and the output voltages of these solar cell groups are the same as each other. 2. The roof with a solar cell according to claim 1, wherein the solar cell panel includes a solar cell panel having a light receiving area different from that of another solar cell panel. 3. The solar cell according to claim 1, wherein the solar cell panel includes a solar cell panel having a plane shape different from that of another solar cell panel. With roof. 4. The roof with solar cells according to claim 1, wherein each of the solar cell groups has the same type and number of the solar cell panels constituting the solar cell group. A roof with solar cells, characterized in that: 5. The solar cell-equipped roof according to claim 1, wherein the type and number of the solar cell panels constituting the solar cell group are other solar cells as the solar cell group. A roof with solar cells, characterized in that it contains something different from the group.