Busbar-free back contact cell, cell module and photovoltaic system

Abstract

A busbar-free back contact cell includes a cell substrate, first insulating members and conductive members. Alternately distributed fingers of two polarities are formed on a back surface of the cell substrate, the back surface includes alternately distributed current-confluence regions and non-current-confluence regions, and parts of each finger are located in the current-confluence regions, and rest parts of each finger are located in the non-current-confluence regions. The current-confluence regions include electrically connected regions, and the first insulating members are arranged in the current-confluence regions and cover fingers having a polarity opposite to a polarity of the current-confluence regions to expose the electrically connected regions. The conductive members are arranged in the electrically connected regions.

Dependencies are inferred from the claim text.