JPH11301578A - Floating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain desired electric power with a small installation area by using a double-side incidence type solar battery as the power supply of a raft. SOLUTION: In order to secure a reflection surface between a double-sided incidence type solar battery 12 and a raft 16, a clearance is maintained via a prop 18. This enables the reflection surface 30 formed on the surface of the raft 16, thus to supply incident lays that directly enter the surface and rear face of the solar battery 12 to the substrate of the solar battery. Accordingly, the luminous energy increases.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floating body device.
In particular, the present invention relates to, for example, a water float device in which a solar cell is attached to a water float, and required electric power is obtained by the solar cell.

[0002]

2. Description of the Related Art Conventionally, a single-sided incident type solar cell is used. Therefore, in order to secure a necessary amount of power generation by a floating body on the water, the installation area of the solar cell must be increased, and the entire power generation device becomes large. Become

[0003]

A dual-incidence solar cell has also been developed. However, in order to improve the power generation amount, reflected light is incident not only directly from the front side but also from the rear side. At present, no special measures have been taken. SUMMARY OF THE INVENTION Therefore, a main object of the present invention is to provide a floating apparatus using a dual-incidence solar cell capable of increasing the amount of power generation.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a water floating body device in which a solar cell is mounted on a water floating body and required power is obtained by the solar cell. An apparatus for floating on water, characterized by securing an interval between the back surface of the solar cell and the floating body on which water can enter reflected light.

[0005]

[Function] Since a space is provided between the double-sided incident type solar cell and the floating body for securing a reflecting surface, incident light directly incident on the solar cell from the surface side and reflected by the reflecting surface of the floating body. Incident light from the back side is supplied. Therefore, the amount of light incident on the double-sided solar cell increases.

[0006]

According to the present invention, a desired power can be secured with a small installation area by using a double-incidence solar cell as a power source for the floating body on the water. The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A floating body device 10 of this embodiment shown in FIG.
Is a double-incident type solar cell 12, a raft 16 as a floating body floating on the sea surface 14, and four supporting the solar cell 12 on the raft 16 while maintaining an interval for securing a reflection surface between the two. Prop 18, 18, 18 and 18
including.

As shown in FIG. 2, a dual-incidence solar cell 12 includes a dual-incident solar cell 20, 20, and a solar cell substrate 24 in which a transparent resin sealing material 22 is embedded.
The transparent glass plate 2 mounted on both sides of the solar cell substrate 24
6 and 26, solar cell substrate 24 and transparent glass plate 26
And 26 include an aluminum holding frame 28 attached to the peripheral side of the frame with an adhesive.

The surface of the raft 16 facing the back side of the double-sided solar cell 12 forms a reflection surface 30. Therefore, as indicated by the arrows, the incident light directly incident on the surface of the dual-sided solar cell 12 and the incident light reflected on the reflecting surface 30 formed on the surface of the raft 16 and incident on the back surface of the solar cell 12 are reflected by the sun. Since the light is supplied to the battery substrate 24, the amount of light increases, and the amount of power generation required by the raft 16 can be secured.

Further, the back of the solar cell 12 and the raft 16
Is provided between them, the light reflected on the sea surface 14 can also be made incident on the back surface of the solar cell 12, and from this point, the amount of light incident on the solar cell 12 can be increased. , The amount of power generation can be increased. In this embodiment, the raft 16 as a floating body on the sea may be made of a transparent material such as transparent plastic. Also in such a configuration, since the space is provided between the raft 16 and the back surface of the solar cell 12, the amount of light incident from the outside of the solar cell 12 to the sea surface 14 on the back surface increases, and the sea surface 14 The reflected light can be made incident on the back surface of the solar cell 12 to increase the amount of power generation.

FIG. 3 shows another embodiment of the floating body device 10 according to the present invention.
Includes a double-sided incident solar cell 12 sealed in a transparent resin member 32 such as an acrylic resin, and a spherical buoy 36 that forms an internal reflection surface 34 while maintaining an interval from the back side of the solar cell 12. As shown in the exploded view of FIG.
Is a buried double-sided incident solar cell 12 and an internal reflection surface 3
The upper transparent body 40 having a skirt-shaped peripheral side portion 38 for securing the resin 4, a plastic case or a metal case is filled with resin, and a metal material such as a metal plate or aluminum powder is applied on the upper surface to form the reflection surface 34. L on the peripheral side
A body 44 provided with a light emitting element 42 such as an ED and a battery, a necessary control circuit and a lower body 48 provided with a weight 46
Are bonded by an adhesive or the like. The lower body 48 is provided with mounting feet 50 and 50.

The reason why the body 44 is filled with resin is to obtain the buoyancy of the spherical buoy 36 and to prevent seawater from entering the buoy due to breakage. In this embodiment, as shown by the arrow, the incident light that has passed through the upper transparent body 40 and is directly incident on the front surface side of the dual-sided solar cell 12 and transmitted through the skirt-shaped peripheral side portion 38 of the upper transparent body 40 as shown by the arrow. The incident light which is incident on the internal reflection surface 34 and is incident on the back surface side is supplied to the solar cell 24, so that the amount of light increases.

In this embodiment, the reflecting surface 34 is formed on the body 44. However, the body 44 itself is made of a material having high light reflectivity such as metal, so that the inner surface of the body 44 is formed. A reflective surface may be formed as a whole. Alternatively, the body 44 itself may be made of a transparent material such as transparent plastic, and a metal foil such as an aluminum foil may be attached to the entire inner surface to form a reflective surface. With such a configuration, the same effect as that of this embodiment can be obtained.

Further, the body 44 may be made of a transparent material such as a transparent plastic case. Even if the body portion 44 is simply made of a transparent material, the light reflected on the sea surface can be transmitted through the body portion 44 and made incident on the back surface of the solar cell 12. And the amount of power generation in the solar cell 12 can be increased.

Further, the floating apparatus 10 of another embodiment shown in FIG. 5 is different from the embodiment shown in FIG. 1 in that a donut-shaped rubber floating ring 52 is used instead of the raft 16 to make the sea surface 14 a reflective surface. The rest of the configuration is the same as that of the embodiment of FIG. Also in this embodiment, as indicated by arrows, the dual-incidence solar cell 12 includes:
Incident light directly incident on the front surface side and incident light reflected on the sea surface 14 and incident on the rear surface side of the solar cell 12 are supplied to the solar cell, and the amount of light increases.

The electric power obtained by the double-sided incident solar cell 12 is used as a power source for various measuring instruments mounted on the floating body for measuring the marine environment. For example, it is used to measure temperature, water temperature, wind speed, solar radiation, and the like. It is also used as a communication power source for transmitting measured data to ground stations. Further, it is also used as a lighting power source for turning on an LED at night to confirm the position of a farm or the like.

As shown in the block diagram of FIG. 6, the electric power generated by the double-sided solar cell 12 is charged into the battery 56 via the charge / discharge control device 54.
Power is supplied from the battery 56 to a load 58 such as an LED via a load control device 60 such as a timer. In addition,
The floating bodies such as the raft 16, the spherical buoy 36 and the floating ring 52 can be moored to an anchor or the like as required, and can be stopped at a desired position on the sea.

[Brief description of the drawings]

FIG. 1 is an illustrative view showing one embodiment of the present invention;

FIG. 2 is an illustrative view of a dual incidence solar cell in the embodiment of FIG. 1;

FIG. 3 is an illustrative view showing another embodiment of the present invention;

FIG. 4 is an exploded view of the embodiment of FIG.

FIG. 5 is an illustrative view showing a third embodiment of the present invention;

FIG. 6 is a block diagram in an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Floating body apparatus 12 ... Double-sided incidence solar cell 16 ... Raft 18 ... Prop 24 ... Solar cell board 30 ... Reflection surface 36 ... Spherical buoy 52 ... Floating ring

Claims (7)

[Claims] 1. A floating apparatus for mounting a solar cell on a floating body and obtaining required power by the solar cell, wherein a double-sided solar cell is used as the solar cell, and a back surface of the double-sided solar cell and An apparatus for floating on water, wherein an interval for allowing reflected light to be incident on the back surface is secured between the apparatus and the floating body. 2. The floating body device according to claim 1, further comprising a support for supporting the double-sided solar cell on the floating body while maintaining the distance. 3. The floating body device according to claim 2, wherein the floating body has a donut shape, and a water surface serves as a reflecting surface for making the reflected light incident on the back surface. 4. The floating body device according to claim 2, wherein the floating body includes a reflecting surface for making the reflected light incident on the back surface. 5. The water floating body includes a spherical buoy.
A floating body device as described in the above. 6. The floating apparatus according to claim 5, wherein said spherical buoy includes a reflecting surface inside. 7. The floating body device according to claim 5, wherein said spherical buoy includes an upper portion containing a double-sided incident type solar cell and a body made of a transparent material.