DE2907935A1 - Solar energy powered generator - uses closely packed hexagonal cross=section array of cells - Google Patents

Abstract

Solar energy powered generator uses a number of cells which in cross section have a hexagonal shape allowing stacking together without intervening spaces between adjacent cells. Pref. the hexagon shapes are regular with all the sideds of equal length. Typically silicon cells are used which in comparison to quadratic shaped cells of the same composition have approx. 53% less waste.

Description

Solar generator

The invention relates to a solar generator made of solar cells, which are shown in an area can be interconnected with other solar cells of the same dimensions.

With a well-known solar generator (compare the magazine "Der Electronics ", No. 12, 1978, page 15) are several circular solar cells in silicone rubber embedded and provided with a fiberglass plate as a front cover. The mechanical A metallic frame gives this solar generator stability.

For the manufacture of solar generators it is important for an economical use of space an arrangement of the solar cells as dense as possible reach yourself.

Solar cells made of silicon have so far been made more rounded (cf. the above reference) or four- square shape made, but only because of the square shape a closed arrangement in a surface is possible. But there were square silicon wafers made from round silicon wafers before need to be cut out is the unusable portion in this case the silicon wafers considerably.

It is therefore the object of the invention to provide a solar generator made from solar cells indicate that with optimal use of space, the lowest possible waste Requires silicon.

In the case of a solar generator, this task becomes the one mentioned at the beginning Type solved according to the invention in that the edge of the solar cell has the shape of a Hexagon be seated, so that a closed occupancy of the area without gaps is possible.

The invention therefore sees instead of rectangular or round solar cells hexagonal solar cells with a considerably lower silicon waste can be cut out of round slices and also a comprehensive, enable closed arrangement.

Instead of regular hexagonal solar cells, regular octagonal solar cells can also be used, although then the resulting interspaces for a closed surface with smaller ones square solar cells would have to be provided.

A simple mathematical calculation shows that with hexagonal solar cells about 53% less waste occurs compared to square solar cells, while with octagonal Solar cells with small square solar cells compared to the saving in waste square solar cells is only 43%.

The invention is explained in more detail below with reference to the drawing, in the single figure an arrangement of regular hexagonal solar cells is shown is.

The figure shows a solar generator 3 composed of several solar cells 1, each have the same geometric dimensions and have 2 hexagons with their edges form.

These solar cells 1 enable a closed occupancy of an area without gaps and thus an optimal use of space with only little waste, which is created when the solar cells 1 are cut from a circular disk.

2 claims 1 figure

Claims (2)

Claims solar generator made from solar cells in an area can be interconnected with other solar cells of the same dimensions, d a d u r c h g e k e n n -z e i c h n e t that the edge (2) of the solar cell (1) has the shape of a hexagon, so that a closed occupancy of the area without gaps is possible. 2. Solar cell according to claim 1, d a d u r c h g e -k e n n z e i c h n e t that the hexagon is regular, that is, has edges of the same length.