Back contact battery piece and photovoltaic module

Abstract

The invention relates to the technical field of solar cells, in particular to a back contact cell and a photovoltaic module. In the embodiment of the invention, the connecting lines and the glue points are arranged in the edge area of the first area of the battery piece body, and the thin grid lines with the same polarity in the edge area are connected through the connecting lines, so that the welding strips can be connected with the corresponding thin grid lines through the connecting lines located in the edge area, and meanwhile, the welding strips can be connected with the thin grid lines along the thickness direction of the battery piece body. The glue points and the connecting parts are not overlapped, so that the welding points can be conveniently connected with the connecting parts while the welding strips are fixed by utilizing the glue points. Thus, in the process of forming the photovoltaic module or in the thermal cycle test process, the glue permeation risk at the edge area can be reduced, and therefore the connection reliability of the welding strip and the back contact battery piece is improved.

Images