JPH0992866A - Solar cell module having water spray function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid the dangerous cleaning work of a solar cell panel, damages to the light receiving face thereof and lowering of the power generation rate by spraying a liq. on the light receiving face by a water spray function composed of a hollow part formed with frames, a first pipe as a liq. inlet and spray nozzle holes to clean off snow or volcanic ash. SOLUTION: Frames 37 are mounted on two long sides of a solar cell panel, form hollows inside allowing a liq. to pass, and have water spray nozzle holes 39 opened at the surfaces facing at a light receiving face of the panel. The frame 37 has a first pipe 40 forming a liq. inlet at one end and second pipe 41 at the other end, forming a liq. outlet connectable to the other frame 37. Water is put into the hollow part of each frame to spray water on the light receiving face of the panel through the nozzle holes 39 whereby snow, when falling, can be thawed away and volcanic ash, when falling, can be cleaned off.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solar cell module, and more particularly to a solar cell module with a water spraying function which is installed on a roof or wall surface of a house in a snowy area or a volcanic area.

[0002]

2. Description of the Related Art Most of solar cell modules constituting a solar power generation system have a structure called a super straight type. FIG. 4 is an external view showing the structure. FIG. 5 is a sectional view taken along the line AA ′ in FIG.

As shown in the figure, in a conventional superstrate type solar cell module, a solar cell array 1 formed by wiring a plurality of solar cells in series or in parallel with an interconnector or the like is filled with a transparent resin. The solar cell panel 24 is sandwiched between the white tempered glass plate 3 on the light receiving surface and the weather-resistant film 4 on the rear surface via the material 2 to form a plate-shaped solar cell panel 24. The structure is supported by the frame members 5 and 6.

The long-side frame member 5 and the short-side frame member 6 are fixed with screws 7. Further, the long side frame member 5 is provided with a plurality of screw holes 8 for fixing the frame.

A buffer material 9 is sandwiched between the frame members 5 and 6 and the white plate tempered glass plate 3, and the buffer material 9 prevents stress from being applied to the white plate tempered glass plate 3 and at the same time prevents water from adhering. It works to prevent intrusion.

A terminal box 10 is attached to the back surface of the solar cell module, and a solar cell output cable 11 for taking out an electrical output of the solar cell module is connected to the terminal box 10.

The above-mentioned solar cell module is installed on the roof of a general house, DC power generated by the solar cell module is converted into AC power by an inverter, and the AC power is supplied to homes, and surplus power generated during the day is commercialized. A grid-connected residential solar power generation system that can send electric power is becoming widespread. The configuration of the system is shown in FIG.

The residential solar power generation system includes a frame 12 fixed to a roof, and a solar cell array 13 formed by connecting a plurality of the solar cell modules screwed onto the frame 12 in series and in parallel. , A connection box 14 to which electric power generated in the solar cell array 13 is guided by a cable, an inverter 15 for converting DC power generated from the solar cell module and guided from the connection box 14 into AC power, and the inverter 15 And an indoor distribution board 16 connected to a commercial power system.

The electric power generated from the solar cell module is supplied to household electric equipment from the indoor distribution board 16, but the surplus electric power can be sent to commercial electric power. The measuring unit 17 equipped with measures the power input from the commercial power and the power returned.

It is being considered to adopt such a solar power generation system for a house even in an area having a large amount of snow or a large amount of volcanic ash, but particularly in an area having a large amount of snow, the roof has a certain amount of snow or more. As the weight of the piled-up piles puts a heavy burden on the house, it is necessary to regularly perform work to remove snow. Conventionally, this snow removal work is done by workers climbing on the roof, cutting snow with a shovel, and dropping block-shaped snow. Must be repeated.

When installing a solar cell module on the roof of a house in such a heavy snowfall area and installing a solar power generation system for a house, measures against snow accumulated on the light receiving surface of the solar cell module (light receiving surface of the solar cell panel) Is required.

Further, even in an area with a large amount of volcanic ash, it is necessary to take measures against the same kind of volcanic ash accumulated on the light receiving surface of the solar cell module.

Conventionally, when a solar cell module is generally attached to a roof, as shown in FIG. 7, roof tiles, slate,
A pedestal 12 made of a metal material such as a steel material or an aluminum material is placed on a roofing material 18 that is covered with a metal plate or the like.
The method of fixing the solar cell module 13a on the upper surface of 2 is adopted. The mount 12 is mounted on the base plate 2 with a metal fitting 19.
It is placed on top of 0 and fastened to the rafters 21 or purlins 22 with screws.

The solar cell module 13a is generally installed parallel to the roof, and is generally floated from the roof surface by 5 to 10 cm to provide a ventilation space 23 for cooling.

[0015]

However, when the structure is installed in a snowy area, the solar cell module 13a
It is very difficult to manually remove the snow accumulated on the light receiving surface of the. That is, since the light receiving surface is made of the glass 3, the metal portion of the scoop may hit and damage or be damaged. Further, the glass surface of the light receiving surface is very slippery, and there is a risk that an operator will fall. Further, when a large solar cell module for a general house is attached, there is a risk that the glass 3 is bent and broken due to a concentrated load due to the snow load and the weight of the worker.

Even when it is installed in an area with a large amount of volcanic ash, it is very difficult to manually remove the ash accumulated on the light receiving surface of the solar cell module 13a. In the case of volcanic ash, there is no other way but to remove the light-receiving surface with a broom, etc., and the glass surface of the light-receiving surface is very slippery, so there is a risk of an operator falling.

Further, when snow or volcanic ash is accumulated on the light receiving surface of the solar cell module, it is impossible to generate electricity.

As a measure against such a problem, in the snowy area, a method is adopted in which the installation angle of the solar cell array is made steep to prevent snow from being accumulated. The method is
For example, when the installation angle of the solar cell array is set to 40 to 60 degrees, the accumulated snow is allowed to fall naturally. However, when the solar cell module is installed on the roof, it is usually installed in parallel with the roof. However, there is a problem that the roof must have an equal angle, that is, an angle of 40 to 60 degrees.

In view of the above problems, the present invention provides a solar cell module with a water sprinkling function so that snow adhering to the light-receiving surface of a solar cell module (solar cell panel) is melted with water from the water sprinkling function and drifting snow is accumulated. Try not to
Another object of the present invention is to provide a solar cell module with a water sprinkling function, in which volcanic ash attached to the light receiving surface of the solar cell module is flushed with water from a water sprinkling means to remove dirt on the light receiving surface.

[0020]

A solar cell module with a watering function according to claim 1 of the present invention comprises a solar cell panel,
In a solar cell module comprising a frame member for attaching the solar cell panel to a mounted member, the frame member has a hollow portion provided therein, and an injection port for injecting a liquid into the hollow portion, It is characterized in that it has a nozzle hole for watering, which is provided on the surface of the frame material corresponding to the light receiving surface of the solar cell panel and sprays the liquid injected into the hollow portion.

The solar cell module with water sprinkling function according to a second aspect of the present invention is characterized in that the frame member further has an outlet for supplying liquid from the hollow portion to another frame member. To do.

According to the above configuration, in the solar cell module with a water spraying function according to claim 1 of the present invention, the frame member has a water spraying function including the hollow portion, the inlet and the water spray nozzle hole. By the water sprinkling mechanism, a liquid such as water is sprinkled on the light receiving surface of the solar cell panel, and in the case of snow, the snow is melted and poured, and in the case of volcanic ash, the dirt of volcanic ash can be removed. Further, in summer, the temperature rise of the solar cell panel can be prevented.

Further, in the solar cell module with a water sprinkling function according to claim 2 of the present invention, since the frame member further has an outlet for supplying the liquid from the hollow portion to another frame member, Multiple connections between materials are possible, and piping can be simplified.

[0024]

1 is a perspective view for explaining the structure of a solar cell module with a water spraying function according to an embodiment of the present invention.

The solar cell module with the water sprinkling function (hereinafter,
It is simply called "solar cell module". ) Is a configuration including a solar cell panel 30 and frame members 37 and 38 for attaching the solar cell panel 30 to a member to be attached.

The solar battery panel 30 comprises a solar battery cell array 3 in which a plurality of solar battery cells are connected in series or in parallel.
4, the white plate tempered glass 31 is arranged on the front side of the same with a filler 32 made of a transparent resin, and the same filler 3 is provided on the back side.
5, a weather resistant film 36 is disposed, and the solar cell row 34 is sandwiched between the white plate tempered glass 31 and the weather resistant film 36 to form a plate shape.

The solar battery panel 30 comprises, for example, a white plate tempered glass 31, a sheet-like filler 32, and a plurality of solar battery cells connected in series and in parallel from above.
4, the sheet-like filler 35 and the weather resistant film 36 are sequentially stacked and set in a device called a laminator, and the air between each material is evacuated to raise the temperature, and the sheet-like fillers 32 and 35 are melted to melt each material. It is manufactured by adhering.

The frame member 37 is the same as that of the solar cell panel 30.
The frame member 37 is attached to each of the two long sides, and the frame member 37 is formed in a hollow (hollow) shape so that a liquid such as water can pass through, and the frame member 37 is formed on a surface corresponding to the light receiving surface of the solar cell panel 30. Is provided with a water spray nozzle hole 39. Further, a first pipe 40 serving as a liquid inlet is provided at one end of the frame members 37, and a second pipe 41 serving as a liquid outlet so that the frame members can be connected to each other at the other end. Is provided.

The frame member 38 is the solar cell panel 3
It is attached to each of the two short sides of 0.

Next, the pipe piping of the above-mentioned solar cell module with water sprinkling function will be described with reference to FIG. Here, an example of pipe piping when four solar cell modules with a sprinkling function are used is shown.

A pipe 40 between the frame members 37, 37,
41 are connected by a first hose 42, etc., the second pipe 41 of the frame member 37 connected last is plugged 43, and the first pipe 40 of the first frame member 37 connected The second hose 44 is piped to the ground. Here, the hoses 42, 4
4 has a good weather resistance.

Water (ground water), hot water, etc. are supplied to the hose 44 from the ground by a pump or the like, whereby each frame member 37
Water is introduced into the hollow part of each of the frame members 37, and the sprinkling nozzle holes 3 of each frame member 37
Water is sprinkled on the light receiving surface of the solar cell panel 30 via 9.

By this, in the case of snow, the snow is melted and poured, and in the case of volcanic ash, the dirt of the volcanic ash is removed.

FIG. 3 shows a wiring diagram of four solar cell modules. The four solar cell modules 45a to 45d are connected in series by the connection connector 46, and the output cable 4
It is connected to the junction box at 6.

As described above, according to the solar cell module with a water sprinkling function of the present embodiment, the water sprinkling including the hollow portion provided in the frame member 37, the first pipe 40 as an inlet and the water spouting nozzle hole 39. With the function, it is possible to sprinkle a liquid such as water on the light receiving surface of the solar cell panel 30 to melt and run the snow in the case of snow, and to remove the dirt of the volcanic ash in the case of volcanic ash. This eliminates the need for removing snow or volcanic ash, prevents the risk of the removing work, and prevents damage or damage to the white plate tempered glass 31 and a decrease in power generation due to snow or volcanic ash. Further, in summer, it is possible to prevent a decrease in power generation due to a rise in temperature of the solar cell panel 30.

Further, since the frame member 37 further has a second pipe 41 which is a discharge port for supplying the liquid to the other frame member 37 from the hollow portion, a large number of pipes between the frame members 37 and 37 are provided. Connections can be made and piping can be simplified.

[0037]

According to the above construction, in the solar cell module with a sprinkling function according to claim 1 of the present invention, the frame member has a hollow portion,
Since it has a water sprinkling function consisting of an inlet and a water sprinkling hole, it is possible to sprinkle water or the like on the light receiving surface of the solar cell panel by this water sprinkling function and remove snow or volcanic ash, which is dangerous. Removal work is unnecessary, and reduction of power generation due to snow, volcanic ash, and summer is prevented.

Further, in the solar cell module with a water sprinkling function according to claim 2 of the present invention, since the frame member further has an outlet for supplying the liquid from the hollow portion to another frame member, Multiple connections between materials are possible, and piping can be simplified.

[Brief description of drawings]

FIG. 1 is a perspective view for explaining the structure of a solar cell module with a water spraying function according to an embodiment of the present invention.

FIG. 2 is an external view for explaining an example of piping using the solar cell module with a water spraying function shown in FIG.

FIG. 3 is a wiring diagram using the solar cell module with a watering function shown in FIG.

FIG. 4 is an external view showing a conventional solar cell module.

FIG. 5 is a sectional view taken along line AA ′ of FIG. 4;

FIG. 6 is a configuration diagram of a conventional photovoltaic power generation system.

FIG. 7 is a mounting configuration diagram of a conventional general solar cell module.

[Explanation of symbols]

 30 Solar Cell Panel 37 Frame Material 39 Water Sprinkling Nozzle Hole 40 First Pipe (Inlet) 41 Second Pipe (Outlet)

Claims (2)

[Claims] 1. A solar cell module comprising a solar cell panel and a frame member for attaching the solar cell panel to a member to be mounted, wherein the frame member has a hollow portion provided therein, An injection port for injecting a liquid into the hollow portion, and a sprinkling nozzle hole provided on the surface of the frame material corresponding to the light receiving surface of the solar cell panel and for spraying the liquid injected into the hollow portion. A solar cell module with a watering feature. 2. The solar cell module with a water sprinkling function, wherein the frame member further has an outlet for supplying a liquid from the hollow portion to another frame member.