JPH11354823A - Solar generation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make effective the installation of solar cells on roofs facing east/ west direction, by providing long supports coupled across couplers of longitudinal beam adjacent the couplers having coupling sides inclined at specified angles to the longitudinal beams, fixing a plurality of longitudinal beams along the roof surface and arranging solar cells on the supports. SOLUTION: A plurality of stringers 2 with couplers 4 previously fixed at specified intervals are fixed parallel to a roof A of a well sunny house at specified intervals through metal fixtures 6, plates 4a of louvers 4 are laid across coupling sides 3a of couplers 3 flush with the parallel stringers 2 and coupled by screws, etc., thus coupling the plates 4a of a plurality of louvers 4 to the stringers 2 one by one, solar cells 5 are arranged on the surfaces of a plurality of plates 4a coupled to the stringers 2 and adhered through adhesives, etc., and for a roof facing east/west, they are fixed to the roof in parallel to the eaves, thereby making the installation effective on roofs facing east/west.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photovoltaic power generation system for a house, which can be installed not only on a south-facing roof but also on an east-facing or west-facing roof, or in a snowfall area, thereby improving power generation efficiency. The present invention relates to a photovoltaic power generation system that can easily release heat.

[0002]

2. Description of the Related Art A conventional residential photovoltaic power generation system is configured by arranging a large number of solar cells side by side on a rectangular, large-sized support plate, and installing the support plate on a roof by a gantry.

[0003]

According to this conventional photovoltaic power generation system, since it is a roof-mounted type, most of the photovoltaic power generation systems are installed facing south in relation to the direction of the sun rays, and the area of the roof facing south. If it is narrow, it is difficult to install, and since the support plate is formed in large dimensions and heavy, it is difficult to install it on the roof, it takes a lot of construction time, and power generation occurs due to power generation and temperature rise due to solar radiation. There were problems such as a decrease in efficiency and the inability to install in snowfall areas.

The present invention solves the above problems, and
The purpose of the present invention is to provide a photovoltaic power generation system in which installation of a west-facing roof is more efficient, and which can be installed even in a snowfall area by utilizing a vertical surface, so that heat is easily dissipated.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a plurality of stringers parallel to each other, and each of the stringers is locked at predetermined intervals, and And a long supporting body which is arranged between the locking members of the adjacent vertical girder and is locked at the locking side portion and the solar cells are juxtaposed. The plurality of stringers are fixed along a roof surface or a vertical surface.

[0006]

FIG. 1 shows a first embodiment of the present invention.
This will be described with reference to FIGS.

In FIG. 1, reference numeral 1 denotes a solar cell installation portion of the present invention. The solar cell installation portion 1 includes a plurality of stringers 2 which are parallel vertical beams and a plurality of stringers 2 provided at predetermined intervals on each stringer 2. And the same level of the lock 3
It consists of a louver 4 which is a long support which is locked in between. Reference numeral 5 denotes a solar cell module juxtaposed on the surface of the long support 4.

That is, the stringer 2 has a U-shaped cross section or 4
It is formed of a light metal material such as a rectangular aluminum extruded material, and a plurality of the locking members 3 are fixed at predetermined intervals by screws or the like as shown in FIG.

The locking member 3 is formed by bending one side of a substantially triangular or trapezoidal aluminum plate into a ridge to form a locking side 3a having a predetermined inclination angle θ and attaching it to the other side or a plane. The stringer 2 is formed with an engaging hole 3c.

The mounting hole may be formed in a long hole 3c or a plurality of holes 3d to make the inclination angle θ of the locking side 3a variable.

The louver 4 is made of a long plate-like material 4a made of aluminum or the like as shown in FIG. 3, and a ridge 4b is provided below the front surface of the louver 4 to arrange the solar cells 5 side by side. On both sides shown, opposed L-shaped engaging ridges 4c, 4c are provided to sequentially insert and lock the solar cells 5, and the back surface is screwed to the locking side 3a of the locking tool 3. Although not shown, a protrusion, a receiving portion, and a hook (not shown) may be provided for each other and inserted or hooked to be locked.

The plate-like body 4a may be combined with a punched metal material or a frame material shown in FIG.

When the solar cell 5 is installed, the incident solar radiation angle with respect to the solar cell 5 differs by about 47 ° between the summer and winter due to the inclination of the earth axis. .

Next, an installation method according to the first embodiment of the present invention will be described with reference to the drawings.

In FIG. 1, first, a plurality of stringers 2 in which the locking members 3 are fixed in advance at predetermined intervals are fixed in parallel on a roof surface A of a sunny house by mounting brackets 6 at predetermined intervals.

Next, the plate-like body 4a of the louver 4 is engaged with the engaging side 3a of the engaging device 3 at the same height position of the parallel stringer 2 and is engaged with a screw or the like. Subsequently, the plate-like members 4a of the plurality of louvers 4 are sequentially locked to the stringer 2 in the same manner.

Next, the solar cells 5 are arranged on the surfaces of the plurality of plate-like members 4a locked to the stringers 2 and fixed with an adhesive or the like.

In the above-mentioned system in which the plate-like body 4a and the locking side 3a are provided with a projection, a receiving part and a hook,
The solar cell 5 is fixed to the plate-like body 4a first, and the louver 4 is later locked to the locking member 3 locked to the stringer 2.

The solar cell 5 is an assembly in which several tens of battery modules are electrically connected in series per one louver 4, and a plurality of louvers 4 are connected in series.
A predetermined voltage of 0 V or 200 V is connected, and a plurality of louver groups of the predetermined voltage are connected in parallel to obtain a predetermined current to obtain a predetermined power. The centralized cable used for this connection passes through the stringer 2.

As shown in FIG. 6, the electricity generated by the sunlight is connected to the connection unit 7 from the centralized cable from the solar cell installation unit 1 and then to a predetermined voltage of 100 V or 200 V.
Through an inverter 8 that converts DC into AC, and further through a distributor 9 that distributes the electrical equipment 10 such as an indoor refrigerator 10a, an air conditioner 10b, and a lighting device 10c. Power is wattmeter 1
1 flows in the opposite direction, and power is sold to the power company from the service line 12.

Next, since no excess power is generated during cloudy or rainy days and nights, the insufficient electricity is reversed from the drop-in line 12 through the wattmeter 11 as shown by the dotted arrow, and each electric device 10 is connected. It flows into the distributor 9 and does not cause any trouble even when it is not sunny.

FIG. 7 shows a case where the solar cell installation unit 1 is installed on the roof of a house. For example, a stringer 2 is used for a south-facing roof with a ridge-like roof having east-facing and west-facing roofs.
Are fixed along the roof surface in the vertical direction, and the stringer 2 is fixed to the roof surface in parallel with the eaves end or the rain gutter B on the east-facing and west-facing roofs.

The angle at which the louver 4 having the solar cell 5 is locked to the stringer 2 is such that the louver 4 is attached to the stringer 2 at an inclination angle .theta. In the case of a roof having a low slope or a steep slope, a locking tool 3 having an inclination angle θ that provides an appropriate solar radiation angle is used.

In the case of the east-facing and west-facing roofs, the louvers 4 are spaced one by one so that they do not shade each other, and have an appropriate solar radiation angle of about 30 ° with respect to the roof surface with the south facing downward. It is locked to become.

For example, if this louver 4 is installed on a gabled roof only facing east and west without any south-facing roof, only one roof will be shaded near sunrise and sunset, The lower east-facing and west-facing roofs have the same solar radiation angle as the south-facing ones, and can increase efficiency.

As described above, even if the orientation of the roof is disadvantageous to the direction of the sun, the direction of the solar cell can be oriented in an advantageous direction, and the degree of freedom in installation can be increased.

The solar cell 5 generates heat due to heat not converted at the time of power generation. Further, when the sunlight is strong in summer, the temperature becomes abnormally high and the power generation efficiency is extremely reduced at 50 ° or more. The air flow easily occurs on the inclined surface, and the flow of the air radiates the high-temperature solar cell to prevent the power generation efficiency from decreasing due to the abnormally high temperature.

Further, since the air flows between the vertical girders, the heat stored on the roof surface is released, and the rainwater also flows, so that problems such as water leakage can be prevented.

Next, a second embodiment of the present invention will be described with reference to FIGS.

The second embodiment is characterized in that the installation work is greatly simplified.

First, in FIG. 8, more solar cell modules are juxtaposed, the louvers 4 are enlarged, and several to about ten large louvers 21 are used in a general household system.
This large louver 21 has three widths, a large louver 21a, a medium louver 21b, and a small louver 21c having a constant width and a different length, and is adaptable even in a narrow installation place. In addition, it is formed so as to be able to be combined so as to have a predetermined power, thereby simplifying a cable connection operation.

Next, in FIG. 9, horizontal beams 22 are erected at the upper and lower ends of the parallel vertical beams 2 to form a cross beam 23.
The support 24 was fixed to the four corners of the girder 23, and the support 24 was connected and fixed to the fixture 25 previously attached to the roof surface or the vertical surface. Thus, a space is generated between the roof surface and the vertical surface by the support member 24, and the air circulates and radiates heat, and rainwater can also flow.

One of the large louvers 21 which is locked at a predetermined angle by the locking device 3 on the braided girder 23 is arranged at several places on the roof surface, or two or six large louvers 21 are locked. The predetermined power is combined with a single power.

Since the large louver 21 and the girder 23 can be prepared in a factory or the like in advance, the installation work on site can be greatly simplified.

Next, a third embodiment of the present invention will be described with reference to FIG.

The third embodiment is characterized in that the first embodiment is installed on a roof surface, but is installed on a vertical surface such as an outer wall.

In FIG. 10, the stringer 2, which is a stringer to which the locking member 3 is fixed in advance, is attached to a vertical surface B such as an outer wall of a sunny house, a veranda or a fence by a mounting bracket 6.
And the back surface of the louver 4 on which the solar cell 5 is disposed is locked to the locking member 3 so that the louver 4 has a predetermined angle of about 30 ° with respect to the vertical plane B. I do.

It is to be noted that the fixing member 25 may be fixed by a support member 24 provided on the girder 23 of the second embodiment shown in FIG.

Referring to FIGS. 11 and 12, a comparison of solar radiation between the roof surface A and the vertical surface B and the flow of air by the louver 4 will be described.

In FIG. 11, after noon in the summer, the surface of the roof A is very hot because it receives the solar light from almost right above 90 °, but the vertical surface B such as the wall portion is about 30 °. At the incident angle, the calorific value is as low as about one third of the roof surface, and a cool spot C indicated by a white arrow which does not become high in temperature is formed on the wall surface in FIG. .

The heat not converted into electricity causes the temperature of the louver 4 to rise.
Is absorbed by the flow of air on the inclined back surface and flows toward the cool spot C side. In the cool spot C, the air that has absorbed heat rises vertically, and the cool spot itself functions as a ventilation device. New air is caused to flow to dissipate heat, thereby preventing a decrease in power generation efficiency due to an abnormally high temperature.

Next, according to the third embodiment, installation is possible even in a heavy snowfall area where installation was difficult due to thick snow on the roof.

As shown in FIG. 13, a predetermined angle of about 30 ° is applied to a wall surface or a veranda between the windows on the first and second floors and a vertical surface facing the sun such as the side of the windows on the second floor so as not to be filled with snow. To install the louver 4.

In a heavy snowfall area, solar radiation sufficient for power generation is obtained by diffusely reflected light from surrounding snow cover, and heat generation is suppressed by the cooling effect of cold outside air, thereby improving power generation efficiency.

If the louver 4 can be installed under the eaves, the amount of snow adhering to the solar cell is small, and even if it adheres, the snow can be easily removed from the windows on the second floor.

Further, not only in the heavy snowfall area, but also in the case where the installation area is not enough only with the roof surface as in the first embodiment, it is possible to make use of the vertical surface with good sunlight, and to increase the degree of freedom of the installation location. Can be bigger.

[0047]

As described above, according to the present invention, east-facing and west-facing roofs, which have low utility value, can be installed with high efficiency in the same manner as south-facing roofs, and can be installed even in snowfall areas by utilizing vertical surfaces. It is possible to further dissipate heat by the flow of air generated by the louver, to prevent the power generation efficiency of the solar cell from lowering,
Since the louver and the girder can be prepared in advance, there is an effect that the installation time on site is greatly reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a first embodiment of the present invention.

FIG. 2 is a side view of a state in which a vertical girder and a stopper are attached.

FIG. 3 is a perspective view of a portion of a long support.

FIG. 4 is a perspective view of a portion of another elongated body.

FIG. 5 is a perspective view of another plate-shaped body.

FIG. 6 is an electrical diagram.

FIG. 7 is a perspective view of installation on a roof of a house.

FIG. 8 is a perspective view of a large louver according to a second embodiment of the present invention.

FIG. 9 is an explanatory diagram of the set girder.

FIG. 10 is a perspective view of a third embodiment of the present invention.

FIG. 11 is a comparison diagram of incident angles between a roof surface and a vertical surface.

FIG. 12 is an explanatory diagram of a cool spot.

FIG. 13 is an explanatory diagram of installation in a heavy snowfall area.

[Explanation of symbols]

 2 Stringer 3 Locking device 3a Locking side 3b Engagement part 4 Long support 4a Plate 4b Ridge 5 Solar cell

Claims (7)

[Claims] 1. A locking tool which has a plurality of stringers parallel to each other, and which is locked to each of the stringers at predetermined intervals, and has locking side portions at a predetermined inclination angle with respect to the stringers. A long supporting body which is interposed between the locking members of the adjacent stringers and is locked at the locking side portion and in which solar cells are juxtaposed, and the plurality of stringers are arranged along the roof surface or the vertical surface. A solar power generation system characterized by being fixed. 2. A support that can be formed into a girder by laying a horizontal girder at the upper and lower ends of the parallel vertical girder, and that the girder can be locked to a fixing device provided in advance on the roof surface or a vertical surface. The photovoltaic power generation system according to claim 1, further comprising a tool. 3. The solar cell in which the plurality of stringers are fixed along an eaves end or a rain gutter along a roof surface on an east-facing or west-facing roof, and the elongate supports are juxtaposed thereto. 3. The photovoltaic power generation system according to claim 1, wherein the light receiving surface of the photovoltaic device is fixed at an inclination angle facing the sun. 4. In the south-facing roof, the plurality of stringers are fixed vertically along the roof surface, and the elongate supports are arranged such that the light-receiving surfaces of the solar cells facing the sun face the sun. The solar power generation system according to claim 1, wherein the solar power generation system is fixed at an inclination angle. 5. The locking member is formed of a substantially triangular or trapezoidal plate-like body, one side of which is formed on the locking side, and the other side or plane is formed on an engaging portion with the vertical girder. The photovoltaic power generation system according to claim 1, wherein the photovoltaic power generation system is formed. 6. An elongated hole or a plurality of holes for changing the locking side portion at a predetermined angle in a plane of the locking tool, and the opening portion is formed in the engaging portion. Claim 4
A photovoltaic power generation system according to item 1. 7. The photovoltaic power generation system according to claim 1, wherein said elongated support is formed of a frame material or a perforated material for radiating heat from the back side of said juxtaposed solar cells.