JP2006086140A - Method and device for solar light power generation using balloon object - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and device for solar light power generation which efficiently use solar light energy. <P>SOLUTION: A plurality of solar light power generation elements are arranged on an outer surface of a balloon object having a curved surface in a substantially sphere form or elliptic sphere form. The balloon object is filled with gas whose specific gravity is lighter than air and it is floated in air without a shielding object. A solar light receiving area of the solar light power generation element arranged in the balloon object is made relatively large, light is received for long time and it is converted into electric power. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a photovoltaic power generation method and apparatus that efficiently uses a photovoltaic power generation element that converts solar ray energy into electrical energy in terms of light receiving area and light receiving time.

  A power generation device using a power generation element such as a solar power generation cell or a module has been attracting attention as a new power generation device using a pollution-free and inexhaustible resource as an energy source, and various studies have been made.

  The conventional device arranges a photovoltaic power generation module group composed of photovoltaic power generation elements on the roof of a residential house or the roof of a building, and converts sunlight irradiated to the power generation elements (cells, modules) into electric energy. A method of obtaining power is common. However, while the sun shines uniformly on the ground from sunrise to sunset, the roofs of houses and buildings are fixed in a certain direction, so the time to receive sunlight from the rotation of the earth. The angle is regulated. For example, the west side is shaded while the sun is shining, and the east side is shaded when the west is shining. Therefore, solar energy cannot be used at the same intensity throughout the day. Therefore, there is a difficulty in the power generation utilization efficiency of solar energy, which has been one of the factors that hinder the spread of this type of power generation device.

  Accordingly, a first object of the present invention is to provide a solar power generation method that can be used for power generation all day without waste as energy of relatively equal intensity from sunrise to sunset according to the weather. is there.

  A second object of the present invention is to provide an apparatus for carrying out the above method.

  In order to achieve the first object, the photovoltaic power generation method of the present invention has a large number of photovoltaic power generation elements disposed along the outside of a hollow body having a substantially spherical or elliptical spherical curved surface. A hollow body is filled with a gas having a specific gravity lower than the outside air and formed into a balloon that floats in the air, increasing the total light receiving area and light receiving time of the solar power generation element disposed in the balloon, and It is converted into electric energy.

Air balloon floating means with a solar power generation element can be used to fill the balloon body with a gas that is lighter than air, such as helium gas, or with heated air that is lighter in specific gravity than outside air. In addition, a method for imparting a levitation force, and all other means for levitation and holding a balloon having a solar power generation element at a desired height are included.
Preferably, the hollow body provided with the solar power generation element is filled with air heated to a temperature higher than the outside air and floated, and during power generation, the air in the balloon body is heated by the heat of the solar power generation element. It is advantageous to float and hold.

  In order to achieve the second object, a photovoltaic power generation apparatus according to the present invention includes a hollow body having a substantially spherical or elliptical spherical curved surface, and a photovoltaic power generation element disposed along the curved outer surface of the hollow body. And a levitation / holding means that fills the hollow body in which the photovoltaic power generation element is disposed with a gas having a specific gravity lower than that of the outside air and holds the gas in the air as a balloon, and is disposed on the outer surface of the balloon It is characterized in that electric power is obtained by a power generation element.

  The gas that is filled in the hollow body and floats as a balloon is preferably heated to a higher temperature than the outside air during filling, and given buoyancy, and absorbs heat released from the photovoltaic power generation element during power generation to maintain buoyancy. Air can be used. Of course, helium gas may be used.

  In the present invention, a solar power generation element is disposed outside a spherical or elliptical spherical balloon that is levitated in the air without a shield, and the solar energy applied to the power generation element is converted into electric energy by the power generation element. Although the surface of the balloon is an outwardly curved spherical surface or arc surface, the solar power generation element on the outer surface of the balloon is from sunrise to sunset from the balloon side to the top. It receives sunlight all day and generates electricity. Accordingly, the light receiving area and the light receiving time of the photovoltaic power generation element are relatively increased, and the power is converted into electric energy without waste, and relatively large power can be obtained.

  In particular, in the case of levitation with heating and heated air, the heating of the air to be filled is only necessary at the initial stage. Artificial heating is not required, and the efficiency of conversion to electrical energy is improved by heat dissipation from the power generation element.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
The solar power generation device 1 of the present invention has a large number of solar power generation elements 3 arranged outside the balloon body 2 in which buoyant gas is put in a hollow body 4, that is, along the solar light receiving surface side. The solar power generation element 3 of the balloon 2 that has been levitated converts solar ray energy into electric energy and takes it out as electric power.
The balloon 2 is made of helium gas in the inside 5 of a spherical or oval spherical hollow body 4 made of a non-breathable material such as rubber or plastic, air having a specific gravity smaller than that of the outside air by heating, or air such as carbon dioxide gas. The gas body 6 having a light specific gravity is filled and floated in the air by the buoyancy of the gas. Here, the air levitation body having this function is generically named.

  The gas body 6 filled in the balloon body 2 is selected to be lighter than air and capable of obtaining air levitation force. However, heated air and helium gas are most suitable in terms of safety and cost. Carbon dioxide can also be used, but hydrogen gas is not suitable for use because of the danger of explosion. FIG. 1 shows an embodiment using helium gas.

The hollow body 4 of the balloon body 2 is arranged in a state in which a large number of photovoltaic power generation elements 3 are not easily detached from the outer side surface to the upper surface due to wind and rain.
In the embodiment shown in the figure, the photovoltaic power generation element 3 group is directly disposed outside the hollow body 4 of the balloon body 2, but is preferably disposed via an inclusion from the viewpoint of ease of attachment.
The “inclusions” include not only a flexible coating layer such as a synthetic resin or a metal film, but also a coating support material that includes a photovoltaic cell and a module. The disposing means is not limited to the entire surface adhesion, and may be a method of stopping important points.
In addition, the photovoltaic power generation element 3 defined in the present specification is a generic term for all members having a function of converting solar energy into electrical energy, including a photovoltaic power generation cell and a photovoltaic power generation module that is an aggregate thereof. It is used for.

  The solar power generation element 3 used in the present invention has been conventionally used for roofs and the like, but may be any of a thin solid film and a thin film processed film. These are usually coated with a synthetic resin material.

  The solar power generation elements 3 arranged on the outer side of the hollow body 4 of the balloon body 2 are arranged evenly from around the side surface to the upper surface of the balloon body 2, and no matter where the sun moves from sunrise to sunset. The photovoltaic power generation element 3 is set to receive sunlight.

  The balloon body 2 is moored on the ground by a support member 7, and a gas such as helium gas is supplied from a ground gas cylinder 8 (a helium gas cylinder in the embodiment of FIG. 1) to the inside 5 of the balloon body via a hose 9 and a valve 10. The body 6 is supplied and filled.

  FIG. 2 shows an embodiment in which air heated to a temperature higher than that of the outside air and lightened in specific gravity is supplied as buoyancy means for the balloon body 2. Therefore, instead of the helium gas cylinder 8 shown in FIG. A device 13 is provided, and air having a reduced specific gravity is supplied into the hollow body 4 of the balloon body 2 through the valve 10 and the hose 9. 2, the same reference numerals as those in FIG. 1 denote the same members.

In the case of the present invention, the photovoltaic power generation element 3 generates heat of 60 to 80 ° C. during power generation, and the air in the balloon body 2 absorbs this heat and can obtain a high temperature necessary for levitation. Therefore, it is only necessary to supply the heated air at the initial stage of levitation in the air.
Moreover, since the high temperature of the photovoltaic power generation element 3 is a negative factor in the power generation efficiency, heat radiation (heat exchange) to the air in the balloon 2 has the advantage of two birds with one stone for this type of power generation apparatus.

  In the case of using heated air as a levitation means as in the embodiment of FIG. 2, in order to absorb excessive expansion of the air by raising the temperature and to maintain a temperature suitable for levitation by heat exchange with the outside air. A ventilation opening 14 is provided in the lower part of the balloon 2.

  The electric energy obtained by the solar power generation element 3 outside the main body 4 of the balloon 2 is taken out as electric power through the wiring 11 and used as electric power through the electric device 12 such as an inverter. Although not shown, surplus power can be stored in a battery or the like.

  Since the solar power generation device of the present invention converts solar energy into electric energy through the solar power generation elements disposed on the peripheral side surface and the upper surface of the substantially round balloon floated in the air, the sunlight is all day long, Irradiated in a relatively large area. Therefore, large electric power can be obtained using solar energy without waste.

  The obtained electric power can be used for home use and public use as in the case of conventional solar power generation, but it can also be used for camping in the mountains and mountain climbing where electricity is not supplied. Moreover, it can also be used for charging a mobile phone while walking by attaching a solar power generation element to a small balloon and carrying it.

1 is a partially cutaway side view of a photovoltaic power generator according to an embodiment of the present invention. The partially cutaway side view of the photovoltaic power generation apparatus by other Example of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Solar power generation device 2 ... Balloon 3 ... Solar power generation element 4 ... Hollow body 5 ... Inside 6 ... Gas body 7 ... Supporting member 8 ... Gas cylinder 9 ... Hose 10 ... Valve 11 ... Wiring 12 ... Electric device 13 ... Heating Supply device 14 ... opening

Claims (4)

  A large number of photovoltaic power generation elements are arranged along the outside of a hollow body having a substantially spherical or elliptical spherical curved surface, and the hollow body is filled with a gas having a lighter specific gravity than the outside air and floats in the air A photovoltaic power generation method characterized in that solar energy is converted into electrical energy by increasing a total light receiving area and a light receiving time of the photovoltaic power generation element formed on the balloon and   The hollow body in which the solar power generation element is disposed is filled with air heated to a temperature higher than the outside air and floated, and during power generation, the air in the balloon body is heated by the heat of the solar power generation element and floated in the air. The solar power generation method according to claim 1, wherein the solar power generation method is held.   A hollow body having a substantially spherical or elliptical spherical curved surface, a solar power generation element disposed along the outer surface of the hollow body, and a specific gravity lighter than outside air in the hollow body provided with the solar power generation element And a floating / holding means for filling the gas and holding it in the air as a balloon body, wherein the photovoltaic power generation apparatus is configured to obtain electric power by a solar power generation element disposed on the outer surface of the balloon body.   The gas that fills and floats in the hollow body is air that is heated to a higher temperature than the outside air during filling to give buoyancy, and absorbs heat released from the photovoltaic power generation element during power generation to maintain buoyancy. The solar power generation device according to claim 3

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