JPS6094782A - Cloth solar battery - Google Patents

Abstract

PURPOSE:To enable to use at the place required for three-dimensional elongation and contraction by weaving yarns of solar battery in a cloth state, and using it by wearing on a body. CONSTITUTION:Solar battery yarns 2 receive solar light 1 to generate a voltage and a current between a central conductor wires 7 and the transparent electrodes on the surface of the yarns 2. Since the electrodes do not have sufficiently small electric resistance, electric producing wires 3 are extended as wefts to lead an electricity to the end of a cloth, and the ends of the wefts and warps are bound by lead wirings 4, 5 and connected to external power consuming unit 8. For example, the yarns 8 have 0.1-1mm. in diameter, the wires 3 have similarly 0.1-1mm. to form the cloth. Then, the output of the solar light AM1.5 becomes 0.01-0.5W per 100cm<2>.

Description

Detailed Description of the Invention (Technical Field) Due to the lower cost and improved performance of solar cells, solar cells have come to be widely applied. For example, in combination with storage batteries, they can be used for street lights, outdoor It is used as a 7M power source for clocks, outdoor measuring instruments, etc., and more commonly used to drive calculators and wristwatches.

The present invention serves to further expand the range of applications of solar cells.

(2) Conventional technology and its problems Usually, solar cells have a flat structure, making it difficult to wear them or use them in places where three-dimensional stretchability is required.

Therefore, the present invention weaves the threads of 1-thick batteries into a cloth-like form.
This was devised with the aim of eliminating the above-mentioned drawbacks and expanding the field of application of solar cells.

(3) Structure of the invention The present invention uses solar cell threads as warp threads, j1/(threads), and weaves them into cloth.
It may also be blended with synthetic yarns, etc.). At the end of the cloth, provide a connecting wire to extract electricity.

The cloth can be used as part of clothing or attached to something worn like a hat to convert sunlight into electricity. The following description will be made based on examples.

EXAMPLE As a simple example, a cloth solar cell woven using solar cell yarn for the warp and electrical lead-out wire for the weft will be explained using FIG. 1.

The solar cell thread 2 receives sunlight 1 and generates an electromotive force.

That is, voltage and current are generated between the center conductor wire 7 of the solar cell thread 2 and the transparent electrode on the surface of the solar cell thread. When a p-type semiconductor device is placed on the center conductor line and an n-type semiconductor device is placed on the transparent electrode side, current flows as shown by the arrow 6 in FIG. 1 and leads to the power consuming body. Also, contrary to the above, the center conductor line is n-type,
Transparent electrode': When a p7 semiconductor device is applied to 'q++, current flows in the direction opposite to the arrow mark 6 in FIG. Here, since the electrical resistance of the transparent electrode cannot be said to be sufficiently small, an electrical lead-out wire 3 is inserted as a weft thread as shown in Fig. 1, and the terminals of the warp and weft threads, which lead electricity to the edge of the cloth, are connected as shown in Fig. 1. Lead wire 4 as in
, 5, thereby connecting to an external power consumer 8.

The solar cell thread used is 0.1 to 1 mm in diameter, and the electrical lead-out wire is also 0.1 to 1 mm in diameter to construct a cloth, and its output under sunlight AM1.5. When measured, it was 0.01 to 0.5 W per 100 d.

Examples of applications of this cloth solar cell include using it as part of clothing or applying it to something you wear to convert sunlight into electricity.

As an example of this application, when weaving the cloth solar cells mentioned in "Yu", 10 to 50% of cotton yarn, woolen yarn, and chemical fiber yarn are added as blended yarns.
% was used to make fabric. When this was used as part of a hat, it produced an output of 0.1 to IOW under sunlight, and was able to operate a small car hit radio that was placed inside the hat. In a similar application, the fabric solar cell of the present invention can be applied to a part of clothing, such as a shoulder pad.

Next, we will discuss an example of using fabric solar cells as sails for a sailboat. The area of the sail was 1 to 100 m', and the sail was made of a blend with chemical fiber yarn to increase the water resistance and tensile strength of the sail. Power generation 11 hika is maximum 1' O among 11
Available in W to 5KW and can be used for night lighting and charging batteries for wireless devices. Previously, yachts had to carry fuel and a small generator, but this is no longer necessary, making the yacht's cargo lighter and freeing up space.

It goes without saying that the cloth solar cell of the present invention can be applied not only to the above-mentioned application examples but also to a wide range of other applications. By changing the type of blended yarn and the blending ratio, it is possible to change the fabric's strength, texture, heat retention, breathability, etc., and obtain a fabric solar cell with each of the desired properties. Furthermore, if colored blended yarns are used, cloth solar cells with various divine colors can be made.

Needless to say, it can also be used as a door by making it into a net shape with a large gap between the paternity lines and the threads.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a fabric solar cell according to an embodiment of the present invention, which is woven using solar cell yarn for the warp and electric wire for the weft. l...Sunlight, 2...Solar cell thread, 3...Electricity lead wire, 4...Lead wire, 5...Lead wire, 6...Electricity flow, 7 Solar cell center conductor wire, 8... Power consumer. 5-

Claims (2)

[Claims] (1) J to solar cells that convert sunlight into electricity? A cloth solar cell is characterized in that the threads of the solar cell are woven into cloth and used as a solar cell. (2) Solar cell threads and ordinary threads such as cotton thread, woolen thread, etc.