Solar cell string, method and device for connecting solar cells to a solar cell string

Abstract

A solar cell string having a plurality of solar cells disposed in a row includes contact elements for electrically connecting the solar cells. The contact elements have cup-shaped indentations, created through deep-drawing or stamping, that establish contact with the solar cells through holes in insulating strips applied to the solar cells.

Description

technical field [0001] The invention relates to a string of solar cells, a method and a device for connecting solar cells to form a string of solar cells. The invention is particularly suitable for connecting so-called backside solar cells, which are characterized in that the contact regions—that is to say the p-doped region and the n-doped region—are located on the same side of the solar cell. Background technique [0002] figure 1 Shown are solar cell strings according to the prior art which can be compared according to the category. The details of the structure and construction solutions for known connection systems of solar cell strings can be obtained from figure 2 learned that figure 2 What is involved is a string of backside solar cells. For the electrical connection of the solar cells, copper strips, which are formed by bending, are used. An insulating strip 4 extending in the x-direction is arranged on the rear side of the solar cell, the insulating strip 4 h...

AI Technical Summary

Problems solved by technology

The known contact elements are relatively narrow; the maximum width of the contact element 3 is limited by the opening diameter d; such narrow contact elements lead to undesired power losses due to the relatively high ohmic resistance

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