Solar cell, solar cell module and method of manufacturing therefor

A solar cell module comprising:

• a string of cell blocks, each of the cell blocks including a plurality of cell units connected to each other, each of the plurality of cell units including a plurality of fragment cells connected in a shingled manner;
• and
• a connector connecting between two adjacent cell blocks among the cell blocks,
• wherein each of the plurality of cell units includes a first fragment cell type having a long side and a short side and a second fragment cell type having a chamfer at an edge of the second fragment cell.

A method for manufacturing a solar cell module, the method comprising:

• dividing a solar cell into a first fragment cell having a rectangular shape and a second fragment cell having a chamfer, the solar cell including an octagonal-shaped semiconductor substrate having a chamfer formed at an edge, a first electrode unit formed on one surface of the octagonal-shaped semiconductor substrate and having a plurality of sub-electrodes including finger electrodes and a bus bar electrode connected to ends of the finger electrodes, wherein the plurality of sub-electrodes are spaced apart from neighboring sub-electrodes in a first direction, and include a first sub-electrode disposed adjacent to a chamfer in the first direction at one edge of the solar cell among the plurality of sub-electrodes and a second sub-electrode disposed adjacent to another chamfer at another edge of the solar cell;
• loading the first fragment cell having the rectangular shape into a first basket;
• loading the second fragment cell having the chamfer into a second basket;
• and
• connecting the first fragment cell to the second fragment cell by unloading the first fragment cell and the second fragment cell from the first and the second baskets, and then positioning the second fragment cell to partially overlap the first cell fragment,
• wherein the dividing the solar cell includes dividing the solar cell into a plurality of fragment cells aligned with scribe lines disposed between the plurality of sub-electrodes,
• wherein the first sub-electrode and the second sub-electrode are symmetrical in a longitudinal direction of the bus bar electrode, and
• wherein the loading the second fragment cell includes the second fragment cell being loaded in the second basket with the chamfer being oriented in a same direction as another previously loaded second fragment cell.