公开(公告)号：US10381493B2

公开(公告)日：2019-08-13

申请号：US14738677

申请日：2015-06-12

Applicant: BYD COMPANY LIMITED

Inventor： Zhiqiang Zhao ,  Ye Tian ,  Liguo Wang ,  Shengya Wang ,  Zhanfeng Jiang ,  Long He

IPC: H01L31/0224 ,  H01L31/05 ,  H01L31/02 ,  H01L31/048 ,  H01L31/18 ,  H01L31/049

Abstract: A solar cell unit comprises a cell. The cell includes a cell substrate and a secondary grid line disposed on a front surface of the cell substrate. The solar cell unit also comprises a conductive wire intersecting and welded with the secondary grid line. The secondary grid line has a width in a welding position with the conductive wire greater than a width thereof in a non-welding position.