JPH0472681A - Floating-type solar cell device - Google Patents

Abstract

PURPOSE:To always maintain a prescribed angle of elevation by a method wherein a protruding pillar is made to protrude from a subfloat via the opening of a liquid chamber and it is set at the prescribed angle of elevation with reference to the protruding pillar. CONSTITUTION:Since a float 1 is constituted of a lightweight material, it floats on the lake water or the seawater 2. At the same time, the lake water or the seawater 2 enters a liquid chamber 3 via a hole 5 in the bottom and also a subfloat 6 floats on the lake water or the seawater 2 inside the liquid chamber 3; a solar cell 8 which is attached to the subfloat 6 via a protruding pillar 7 is set to a prescribed angle of elevation at which the sunlight can most efficiently be photodeteted. When the lake water or the seawater 2 wave by wind, waves, a swell or the like, the float 1 waves in conjunction with it. However, the solar cell 8 which is attached to the subfloat 6 maintains the prescribed angle of elevation at which the sunlight is photodetected most efficiently.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a floating solar cell device that generates power by installing solar cells on a float on the surface of water such as lake water or seawater.

(b) Conventional technology A concept has been announced to construct a large-scale power generation base by floating a float on the ocean and installing solar cells on the float in an area directly under the equator with strong sunlight.

In addition, as a small marker buoy in the bay, solar cells are installed on the surface of the buoy, which is made up of floats, and at the same time, a light emitting element is attached to the top of the pole planted on the buoy, and the electricity generated by the solar cells during the day is stored in a storage battery. There are now devices that use electricity from storage batteries to light up light-emitting elements at night.

(c) Problems to be solved by the invention When solar cells are installed on a float floating on the water surface, the angle is usually set to receive sunlight most efficiently, but when the float is swayed by wind, waves, swells, etc. The angle of the solar cells relative to sunlight changes in response to the shaking, resulting in a decrease in power generation efficiency.

(d) Means for Solving the Problems The present invention has been made in view of these problems, and includes providing a liquid chamber with an opening on the upper surface in a float floating on the water surface, and A floating sub-float is disposed in the chamber, a protrusion is made to protrude from the sub-float through the opening of the liquid chamber, and a solar cell set at a predetermined elevation angle is fixed to the protrusion.

(E) Function According to the present invention, even if the float is shaken by waves or wind, the sub-float floating in the liquid chamber within the float does not follow the shaking of the float and maintains its original position. A solar cell attached to a protruding pillar at a predetermined elevation angle always maintains that elevation angle.

(v) Embodiment FIGS. 1 and 2 are a perspective view and a central sectional view showing the structure of the device of the present invention, and l is a material that floats in lake water or seawater 2, such as foamed urethane, lightweight plastic, or A float made of lightweight wood, etc., 3 is a liquid chamber provided inside the float 1, and has an opening 4 on the top surface and a hole 5 on the bottom surface so that it can be used in lake water or seawater. It communicates with 2. Reference numeral 6 denotes a sub-float floating in this liquid chamber 3, and this sub-float 6 is provided with a protrusion 7 that protrudes through the -L surface opening 1 of the liquid distribution chamber 3. There is. Reference numeral 8 denotes a solar cell attached to the negative end of the pillar 7, and is set at an elevation angle that allows efficient reception of sunlight. A weight 9 is attached to the bottom of the sub-float 6, and has the function of maintaining the protrusion 7 attached to the sub-float 6 and the solar cell 8 at a predetermined angle.

Here, thick FjS will be explained with respect to the elevation angle of the pond 8.

For example, if the solar cell 8 is installed in the ocean 11 directly below the equator, sunlight will be irradiated from directly above, so the optimal elevation angle is Oo, and in low latitude (30°) areas, the elevation angle approximately corresponds to that latitude. is preferable, and furthermore, even in a high latitude (60°) region, by setting the elevation angle to 60°, which is approximately equal to the latitude, the highest power generation efficiency in that region can be obtained.

Note that the electric power generated by the solar cell 8 is stored in a storage battery (not shown), but the explanation thereof will be omitted since it is not directly related to the present invention.

When the solar cell device of the present invention is floated on lake water or sea water 2, it will float on the lake water or sea water 2 because the float 1 is made of a lightweight material. At the same time, lake water or seawater 2 enters the liquid chamber 3 through the hole 5 on the bottom, and the sub-float 6 also floats on the lake water or seawater 2 in the liquid chamber 3. The battery 8 is set at a predetermined elevation angle that receives sunlight most efficiently.

In this state, when the lake water or seawater 2 sways due to wind, waves, swells, etc., the float 1 sways along with it, but the water level inside the liquid chamber 3 remains constant regardless of the lake water or seawater 2 outside the float 1. Therefore, the movement of the sub-float 6 floating in the liquid chamber 3 is almost unaffected by the shaking of the lake water or seawater 2, and the solar cell 8 attached to the sub-float 6 receives sunlight most efficiently. maintain a predetermined elevation angle.

Of course, the solar cell 8 may be tilted due to the wind directly hitting the pillar 7 or the solar cell 8, or the pillar 7 may come into contact with the inner wall of the liquid chamber 3 due to large waves or swells that exceed the allowable range, causing the solar cell 8 to tilt. However, as long as it is within the allowable range, the elevation angle of the solar cell 8 with respect to the sun can be kept constant as described above.

(G) Effects of the Invention As is clear from the explanation in I- below, the present invention provides a liquid chamber having an opening on one side in a float submerged on the water surface, and a liquid chamber with an opening on one side. Place the sub-float,
[From the sub-float] - A projecting pillar is projected through the opening of the liquid distribution chamber, and a solar cell set at a predetermined elevation angle is fixed to the projecting pillar, so that the float is protected against wind, waves, undulations, etc. This allows the solar cells to be maintained at an angle that best receives sunlight even when the solar cells are shaken by the windshield, and can prevent low F power generation efficiency from Western J1 power generation and marker buoys.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the solar cell device of the present invention, and FIG. 2 is a sectional view of the main parts thereof.

Claims (1)

[Claims] (1) In a floating solar cell device that generates electricity by installing solar cells on a float floating on the surface of water, a liquid chamber having an opening on the upper surface is provided in the float, and the float floats in the liquid chamber. Place the sub-float,
A floating type solar cell device comprising a protruding pillar protruding from the sub-float through the opening of the liquid chamber, and a solar cell set at a predetermined elevation angle fixed to the protruding pillar.