Cell interconnects
Flexible interconnects for attaching overlapping strings that can be part of a photovoltaic module. The interconnects can absorb strain caused by non-uniform heating and other loads encountered by the photovoltaic module.
1. A photovoltaic structure including a plurality of photovoltaic strips comprising:
a first photovoltaic strip having a first strip edge portion;
a second photovoltaic strip arranged in a cascade with the first photovoltaic strip, the second photovoltaic strip having a second strip edge portion positioned underneath the first strip edge portion; and
an elongated interconnect having connection portions separated by flexible portions, the connection portions being electrically connected to the first and second strip edge portions, the flexible portions extending laterally outside of the first and second strip edge portions, wherein the elongated interconnect comprises a wire having a plurality of lower curves and a plurality of upper curves, each lower curve alternating and connecting with an upper curve, wherein the lower curves comprise the connection portions and the upper curves comprise the flexible portions, and wherein every other lower curve along the wire is electrically connected to the first strip edge portion, with the remaining plurality of lower curves being electrically connected to the second strip edge portion.
2. The cascade of photovoltaic strips of claim 1 , wherein the plurality of lower curves and the plurality of upper curves are separated by a plurality of elongated wire portions.