Busbar-free heterojunction solar cell and assembly thereof

Abstract

A busbar-free heterojunction solar cell comprises a cell body and a plurality of parallel finger grid electrodes provided on the front and back sides of the cell body, wherein each finger grid electrode comprises a plurality of first finger grid electrodes, a second finger grid electrode is provided between two adjacent first finger grid electrodes, both ends of the second finger grid electrode are respectively in lap-joint with the two adjacent first finger grid electrodes, and a welding positioning groove is formed in a middle portion of the second finger grid electrode. The structure of the solar cell can not only ensure good conductive performance of finger grid electrodes but also take into account good welding performance of the finger grid electrodes.

Dependencies are inferred from the claim text.