JPS61133673A - Solar battery system - Google Patents

Abstract

PURPOSE:To track the sun by a simple constitution, by providing a solar battery on a floating body, which is arranged on the water, attaching containers to said floating body, adjusting the weights of the containers, thereby adjusting the inclination of the floating body. CONSTITUTION:A mounting frame 3 is provided on a main body 2 o a floating body, which is arranged on the water. A solar battery 1 is attached to the mounting frame 3. Containers 6a and 6b are suspended from both ends of the main body 2 of the floating body 2, i.e., both ends of the aligning direction of the solar battery. A required amount of liquid is injected into the containers 6a and 6b by a control circuit 10. The amount of the liquid in the containers is controlled in correspondence with the movement of the sun, and the main body 2 of the floating body is inclined. Thus, the furnace of the solar battery can be directed toward the sun accurately.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Industrial Application Field The present invention relates to a solar cell system used for solar power generation.

C Port 1 Conventional Technology In solar cell systems used for photovoltaic power generation for large amounts of power, the position of the sun changes from moment to moment with time, so many of them use Proo, 16th I, in order to effectively receive sunlight.
K Photovoltaic 8speciali
sta Oon/, (1982) pages 1368 to 1371.

The position of the sun and solar cells! To explain the relationship with the arrangement direction of the light surface using Fig. 4, the panel solar cell (
80) is sent so that its normal n is in a vertical plane parallel to the north-south (8N) direction, and the sun C is at position A at the morning time, position B at noon, and at the afternoon time. Position C
shall be moved to. The irradiation intensity of sunlight on the light-receiving surface of solar cell C80) is given as the cosine component of the angle θ between the normal n and the direction of incidence of sunlight, so at position B of the sun (8u) at noon, the angle θ is the smallest, and can be made zero by adjusting the inclination angle α of the light-receiving surface.
A large irradiation intensity on the light receiving surface can be obtained. However,
At the position A or O where the sun (E) is tilted towards the east (El or west), the angle θ will be large and the irradiation intensity on the light receiving surface will be small. A tracking mechanism such as the above-mentioned prior art is required to increase the intensity of irradiation on the light receiving surface.

(c) Problems to be solved by the invention However, the tracking mechanism installed on the ground is not only structurally complex, but also difficult to secure land because it is installed on the ground, and the cost per unit power generation9 is low. This causes the product to be expensive, and some kind of improvement measure is desired.

B) Rounding means for solving the problems In order to solve the above-mentioned problems, the present invention disposes on water a floating body that supports solar cells in a floating state with respect to the liquid surface, and also provides a floating body arranged on the floating body. The tit of the container is adjusted by an adjusting means so that the light-receiving surface of the solar cell follows the movement of the sun.

(e) Function As mentioned above, by placing solar cells on water, idle space can be utilized, and by simply adjusting the weight balance of the floating body that supports the solar cells in a floating state, the light-receiving surface of the solar cells can be Acts to follow movement.

(f) Embodiment FIG. 1 shows an embodiment of the present invention, in which 111 panelized solar cells are connected to the floating body body (21) and the solar cells 111
A floating body (51) consisting of a frame (31) to which the solar cells (11) are fixed, and a weight (41) suspended from the bottom of the floating body body (21) in a floating state with respect to the liquid surface. Containers (6a) (6b) are suspended from both ends of the direction.The containers (6a) (6b) are equipped with a pipe C7), a pump (81), a flow divider (9) equipped with an on-off valve, and a control. A liquid volume adjustment means consisting of circuit devices f is associated, and the weight balance is adjusted by controlling the volume of liquid contained in the containers (6a) (6b), and the line connecting the containers (6a) (6b) is adjusted. The floating body (51) is rotated about the center (center of gravity).

The above liquid amount can be adjusted by pumping water (or seawater) previously stored in the floating body body (21) by operating the pump (81).
flow divider 19), a predetermined container (6a
) (6b) or their containers (6a) (6b)
), which container (6a) (
6b) is determined by an on-off valve signal to the flow divider (9) given from the control circuit device a1 programmed in advance based on the annual sunshine data of the installation location.

FIG. 2 is a front view for explaining the operation of the embodiment shown in FIG. 1. This example system is arranged so that the normal direction of the light-receiving surface of the solar cell is almost parallel to a vertical plane parallel to the north-south (8N) direction at noon, and the containers (6a) (6b) are arranged in a direction parallel to the water surface. ) are shown in the hanging positions P and Q of the containers (6a) and (6b) in a state where there is a line connecting them. At the time before sunrise, the container (6a) is full and the container (6a) is full.
b) is empty, and the floating body (51) is tilted significantly clockwise from the PQ position. On the mountain ridge of the day, water begins to be discharged from the container (6a) at a predetermined time, and at noon, the floating body (51) is tilted significantly clockwise from the PQ position.
) becomes an equilibrium state, and then the slope reverses and the container (6
a) The zenith angle of the sun was projected onto a vertical plane parallel to north-south (8N) so that the angle between the change line direction (n) and the sun direction was minimized according to the amount of water in (6b). angle(
The amount of water in the container (6a) is adjusted so that the projected angle of or and the zenith angle of the normal to the light-receiving surface are the same. Therefore, the strong change in sunlight irradiation on the light-receiving surface will be the largest within the range of rotational force shown in the figure, and effective use of sunlight will be achieved.

At the afternoon time, water is now supplied to the container (6a). As in the above case, the supply amount is adjusted so that the angle between the normal direction of the light receiving surface and the sun position direction is minimized. Therefore, in this case as well, sunlight can be used effectively as in the morning.

FIG. 3 is a perspective view showing another embodiment of the present invention. A hemispherical body is used as the floating body body (2), and the containers are integrally arranged at four locations.

Piping to the container, pumps, control circuits, etc. are built into the floating body. In this case, containers (6a) (6b) (6o)
Adjust the amount of liquid in (6d).

By rotating like two wheels! The light surface normal direction can be made to coincide with the sun position direction. Therefore, the degree of effective utilization of sunlight is even higher than in the embodiments shown in FIGS. 1 and 2.

The present invention has been described above according to two embodiments, but there are various other variations that can be considered. , a floating body in which at least a portion of the body also serves as a container, and a means for adjusting the amount of liquid in the container.

A device in which the liquid in the container is directly transferred from one container to another is also effective. In this latter case, it is more effective to use a liquid with a higher specific gravity than water.

In addition, various modifications can be effectively applied without departing from the spirit set forth in the claims.

(Effects of the H Invention As described above, according to the present invention, solar cells are placed on a floating body and used, so simply by adjusting the amount of liquid in a container placed on the floating body, the solar cells can be adjusted in the direction of movement of the sun. The solar cells can be rotated effectively according to the requirements, simplifying the system configuration and reducing production costs.In addition, the most widely available idle space on earth, such as the sea or lake, can be used as the installation location. Therefore, it has great utility value from the viewpoint of economy and effective use of resources.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing one embodiment of the present invention, Fig. 2 is a front view for explaining the operation of the embodiment shown in Fig. 1, and Fig. 3 is a perspective view showing another embodiment of the invention. 4 and 4 respectively show schematic diagrams for explaining the relationship between the position of the sun and the arrangement direction of the solar cells. +11-...Solar cell, (F51-...Floating body,
(6a) (6b) (6c) (6d)-・Container, (R1-
·pump. (91-... shunt, (In... control circuit device).

Claims (1)

[Claims] (1) A solar cell, a floating body that supports the solar cell in a floating state with respect to a liquid surface, a container disposed on the floating body, and an adjusting means for adjusting the weight of the container, and adjusting the weight of the container. A solar cell system characterized in that the light-receiving surface of the solar cell follows the movement of the sun.