JP3218169B2 - Solar cell module with water spray function - Google Patents

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 having a water spray function installed on a roof or a wall of a house in a snowy area or a volcanic area.

[0002]

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

[0003] As shown in the figure, in a conventional superstrate type solar cell module, a solar cell array 1 in which a plurality of solar cells are wired in series or in parallel by an interconnector or the like is filled with a transparent resin. A plate-shaped solar cell panel 24 is sandwiched between a white-sheet reinforced glass plate 3 on the light-receiving surface and a weather-resistant film 4 on the back surface via the material 2, and the periphery of the plate-shaped solar cell panel 24 is extruded from aluminum or the like. It consists of a structure supported by frame members 5 and 6 made of.

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

A cushioning material 9 is sandwiched between the frame members 5 and 6 and the tempered white glass plate 3. The cushioning material 9 prevents stress from being applied to the tempered white glass plate 3 and prevents water from being applied. It works to suppress intrusion.

[0006] A terminal box 10 is attached to the back surface of the solar cell module, and a solar cell output cable 11 for extracting an electric 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, the DC power generated by the solar cell module is converted into AC power by an inverter, and supplied to the home. Grid-connected residential photovoltaic power generation systems that can transmit power are becoming widespread. FIG. 6 shows the configuration of the system.

The residential photovoltaic power generation system comprises a gantry 12 fixed to a roof, and a solar cell array 13 which is screwed onto the gantry 12 and in which a plurality of the solar cell modules are connected in series and parallel. A connection box 14 through which power generated by the solar cell array 13 is guided by a cable; an inverter 15 that converts DC power generated by the solar cell module through the connection box 14 into AC power; And an indoor distribution board 16 connected to a commercial power system.

The electric power generated from the solar cell module is supplied to electric equipment in the home from the indoor distribution board 16, but the surplus electric power can be sent to commercial electric power, and two electric energy meters can be used. The power supplied from the commercial power and the returned power are measured by the measuring unit 17 provided with.

[0010] The adoption of such a residential photovoltaic power generation system in an area with a large amount of snow or an area with a large amount of volcanic ash is being studied. In particular, in an area with a large amount of snow, a certain amount of snow on the roof. Since the weight of the house puts a heavy burden on the piles, it is necessary to periodically perform the work of removing snow. Conventionally, this snow removal work is performed by workers climbing on the roof, cutting snow with a scoop, and dropping block-shaped snow. Must be repeated.

When a solar cell module is mounted on the roof of a house in such a heavy snowfall area and a solar power generation system for a house is to be installed, measures are taken 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 where there is a lot of volcanic ash, it is necessary to take measures against the same kind of volcanic ash that accumulates on the light receiving surface of the solar cell module.

Conventionally, when a solar cell module is generally mounted on a roof, as shown in FIG.
A gantry 12 made of a metal material such as a steel material or an aluminum material is arranged on a roof material 18 covered with a metal plate or the like.
A method of fixing the solar cell module 13a on the top 2 is adopted. The gantry 12 is mounted on the base plate 2 with a bracket 19.
It is placed on top of 0 and is fastened to the rafter 21 or purlin 22 with screws.

The solar cell module 13a is generally mounted parallel to the roof, floated 5 to 10 cm from the roof surface, and provided with 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 that accumulates on the light receiving surface. That is, since the light receiving surface is made of the glass 3, the metal portion of the scoop may hit or be damaged. In addition, the glass surface of the light receiving surface is very slippery, and there is a risk that the worker may fall. Further, when a large-sized solar cell module for a general house is mounted, there is a risk that the glass 3 may be bent and broken due to a snow load and a concentrated load due to the weight of an operator.

Similarly, even when the solar cell module is installed in an area with a large amount of 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 method than to remove the light receiving surface with a broom or the like, and the glass surface of the light receiving surface is very slippery, and there is a risk that an operator may fall.

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

As a countermeasure against such a problem, in a snow-covered area, a method is adopted in which the installation angle of the solar cell array is made steep to prevent snow from accumulating. The method comprises:
For example, by setting the installation angle of the solar cell array to 40 degrees to 60 degrees, it is a method of allowing the accumulated snow to fall naturally, but when installing the solar cell module on the roof, it is usually necessary to mount the solar cell module in parallel with the roof. There is a problem that the roof must be at an equal angle, that is, an angle of 40 to 60 degrees.

In view of the above-mentioned problems, the present invention provides a water spraying function for a solar cell module to melt snow attached to a light receiving surface of a solar cell module (solar cell panel) with water from the water spraying function, thereby causing snow to flow. Not to be
Another object of the present invention is to provide a solar cell module with a water spray function that removes dirt on the light receiving surface by flowing volcanic ash attached to the light receiving surface of the solar cell module with water from water spraying means.

[0020]

According to a first aspect of the present invention, there is provided a solar cell module with a water spray function, comprising: a solar cell panel;
Frame material for attaching the solar cell panel to a member to be attached
Of the two long sides and two short sides of the solar cell panel
In the solar cell module provided in each of the above, the frame material is provided with a hollow portion provided therein, an injection port for injecting a liquid into the hollow portion, and a frame material corresponding to a light receiving surface of the solar cell panel. Water spray nozzle holes provided on the surface for spraying the liquid injected into the hollow portion.

According to a second aspect of the present invention, in the solar cell module with a water spray function, the frame member further has an outlet for supplying a liquid from the hollow portion to another frame member. Is what you do.

According to the above structure, the solar cell module with a water spray function according to the first aspect of the present invention is configured such that the frame member has a water spray function including a hollow portion, an inlet, and a nozzle hole for water spray. The water spray mechanism sprays a liquid such as water on the light receiving surface of the solar cell panel, melts and flows snow in the case of snow, and removes dirt from the ash in the case of volcanic ash. In summer, the temperature of the solar cell panel can be prevented from rising.

In the solar cell module with a water spray function according to a second aspect of the present invention, the frame member further has an outlet for supplying a liquid from the hollow portion to another frame member. Multiple connections between materials are possible, and the piping can be simplified.

[0024]

FIG. 1 is a perspective view illustrating 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 a watering function (hereinafter, referred to as
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 cell panel 30 includes a plurality of solar cell arrays 3 connected in series or in parallel.
4 is disposed on the front side thereof with a white-plate tempered glass 31 interposed therebetween through a filler 32 made of a transparent resin, and the filler 3
5, a weather-resistant film 36 is arranged, and the white-sheet reinforced glass 31 and the weather-resistant film 36 are formed in a plate shape with the solar cell row 34 interposed therebetween.

The solar cell panel 30 includes, for example, a solar cell array 3 formed by connecting a plurality of solar cells in series and in parallel from a white plate reinforced glass 31, a sheet-like filler 32, and a plurality of solar cells.
4. The sheet-like filler 35 and the weather-resistant film 36 are sequentially superimposed and set on a device called a laminator, and the air between each material is evacuated to increase the temperature. It is manufactured by bonding.

The frame member 37 is formed of the solar cell panel 30 2.
The frame member 37 is formed in a cavity (hollow shape) so that a liquid such as water passes therethrough, and is formed on a surface corresponding to a light receiving surface of the solar cell panel 30. Is provided with a watering nozzle hole 39. A first pipe 40 serving as a liquid inlet is provided at one end of these frame members 37, and a second pipe 41 serving as a liquid outlet is provided at the other end so that the frame members can be connected to each other. Is provided.

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

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

The pipes 40 between the frame members 37, 37,
41 are connected by a first hose 42 or the like, the second pipe 41 of the frame member 37 to be connected last is plugged 43, and the second pipe 41 of the first frame member 37 is connected to the first pipe 40 of the first frame member 37. The second hose 44 is connected to the ground. Here, the hoses 42, 4
4 is made of a material having good weather resistance.

Water (ground water), hot water, or the like is supplied to the hose 44 from above by a pump or the like.
Is introduced into the hollow part of the nozzle, and the nozzle holes 3
Water is sprayed on the light-receiving surface of the solar cell panel 30 through the light-receiving surface 9.

Thus, in the case of snow, the snow is melted and flown away, 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 connector 46, and the output cable 4
At 6 it is connected to the junction box.

As described above, according to the solar cell module with the water spray function of the present embodiment, the water spray formed by the hollow portion provided in the frame member 37, the first pipe 40 serving as the inlet, and the nozzle hole 39 for water spray. The function makes it possible to spray a liquid such as water on the light receiving surface of the solar cell panel 30 to melt and flow snow in the case of snow and to remove dirt from the volcanic ash in the case of volcanic ash. This eliminates the need for removing snow and volcanic ash, preventing the risk of the removing operation, and further preventing damage or damage to the tempered white sheet glass 31 and reduction in the amount of power generation due to snow and volcanic ash. In summer, a decrease in power generation due to a rise in the temperature of the solar cell panel 30 can be prevented.

Further, since the frame member 37 further has a second pipe 41 which is a discharge port for supplying a liquid from the hollow portion to another frame member 37, the number of frames between the frame members 37, 37 is large. Continuous connection becomes possible, and simplification of piping becomes possible.

[0037]

According to the above construction, in the solar cell module with a water spray function according to the first aspect of the present invention, the frame member has a hollow portion,
Since it is a configuration having a watering function consisting of an inlet and a watering hole, the watering function allows water or the like to be sprayed on the light receiving surface of the solar cell panel, thereby removing snow or volcanic ash, which has a risk. Elimination work is not required, and reduction in power generation due to snow, volcanic ash, and summer season is prevented.

In the solar cell module with a water spray function according to the second aspect of the present invention, the frame member further has an outlet for supplying a liquid from the hollow portion to another frame member. Multiple connections between materials are possible, and simplification of piping becomes possible.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating the structure of a solar cell module with a water spray 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. 1;

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 solar power generation system.

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

[Explanation of symbols]

 Reference Signs List 30 solar cell panel 37 frame material 39 nozzle hole for watering 40 first pipe (inlet) 41 second pipe (outlet)

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01L 31/04-31/078 E04D 13/18

Claims (2)

(57) [Claims] 1. A and the solar cell panel, said frame member for mounting the solar panel to the attached member solar panel
A solar cell module provided on each of two long sides and two short sides of the frame, wherein the frame member has a hollow portion provided therein, an inlet for injecting a liquid into the hollow portion, A water spraying function-provided solar cell module, comprising: a water spray nozzle hole provided on a surface of a frame material corresponding to a light receiving surface of a solar battery panel, for spraying a liquid injected into the hollow portion. 2. The solar cell module with a water spray function according to claim 1, wherein the frame member further has an outlet for supplying a liquid from the hollow portion to another frame member.