Solar battery piece, battery string and solar battery assembly

The utility model provides a solar cell, a cell string and a solar cell module. The utility model belongs to the technical field of photovoltaic modules. The solar cell comprises a silicon wafer, anda textured surface, a doped layer and an antireflection film layer which are sequentially formed on the front surface of the silicon wafer, the front surface of the solar cell is also provided with aplurality of main grid lines which are arranged in parallel and are used for collecting current, and a plurality of cut hole groups which are used for a solder strip to pass through, the main grid lines are in one-to-one correspondence with the cut hole groups, and each cut hole group comprises two cut holes which are respectively arranged at the edges of two sides of the silicon wafer. And the main grid lines corresponding to the cut hole groups are positioned between the two cut holes in the cut hole groups. According to the solar cell sheet, the cut holes are arranged at the edge of the cell, the central positions o