Arrangement and circuit, and method for interconnecting flat solar cells

Abstract

The invention relates to an arrangement and circuit, and to a method for interconnecting flat rigid or flexible solar cells, the photoelectrically active layers thereof being applied to an insulating substrate material. The solar cells (1) in the arrangement and circuit of flat rigid or flexible solar cells are disposed overlapping in the contact area to one or more adjacent solar cells (1), as is already known as such.; Said solar cells (1) are interconnected to each other directly once or a plurality of times in a novel manner, having a contact material (10) at the overlapping area to each other, using contact material (10) or switching points (22). In the method, an electrically conductive layer is generated on an entire solar cell matrix made of a plurality of overlapping solar cells (1) at individual or, if necessary, selectively at a plurality of (optionally a great many of) switching points (22), by means of screen printing, dispensing, spraying, vaporization, sputtering, or galvanically precipitating. Said layer, or the corresponding number of layers, are then applied pointwise to the corresponding locations so that the back side contact (7) of each of the upper solar cells (1) is connected to the front side contact (17) of the immediately adjacent overlapping solar cell (1).; The contact material (10) can be applied and disposed here as a continuous strand or as individual or a plurality of contacts in one or more switching points (22). The invention can be applied for rigid or flexible solar cells, particularly those produced using thin film technology. Said solar cells can also be individual, discrete solar cells, or also a plurality of so-called monolithically interconnected solar cells on a common substrate material.

Description

technical field [0001] The invention relates to arrangements, wiring and methods for interconnecting rigid or flexible flat solar cells, the active photovoltaic layer of which is coated on an insulating substrate material, in particular for use according to claims 1, 2, 3 and 12 Thin-layer solar cells that are the subject of the invention. Flat solar cells in thin-film technology can be designed both rigidly and flexible. These solar cells can likewise be individual, discrete solar cells, but also a plurality of so-called integrally interconnected solar cells on a common substrate material. Background technique [0002] The positive and negative contacts of the solar cell can also be located on the same side of the solar cell (except for the solar cells described here, this also involves, for example, classical silicon rear-contact cells). When connecting the individual solar cells to a solar cell matrix, according to today's prior art the individual solar cells are arrang...

AI Technical Summary

Problems solved by technology

In this embodiment, however, the elastic limit of the wire connection material is also exceeded in the case of relatively high tensile and compressive loads, so that a failure of the contact can result.

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