| 摘要 |
A solar cell piece, a solar cell module, a cell piece unit, and a preparation method therefor. The solar cell piece comprises an aluminum back field coating, a silicon chip layer, and thin gate lines (4). A front surface of the solar cell piece is partitioned into at least two independent areas, at least one front main gate line (3) being disposed at an edge of one side of each area or a position close to the edge, all the thin gate lines on the front surface of this area being electrically connected to the front main gate lines of this area. The solar cell piece no longer needs a plurality of traditional front longitudinal main gate lines, and may no longer need a welding strip connecting process, thus reducing the coverage area of main gate lines, reducing the production cost and improving the efficiency of a solar cell module. |
