Solar cell and solar cell module

A solar cell module, comprising a plurality of solar cells distributed along a certain arrangement direction, wherein each of the plurality of solar cells comprises:

• a converging busbar, wherein the converging busbar separates a first surface of the solar cell into a first region and a second region, the first region is located on a first side of the converging busbar, and the second region is located on a second side of the converging busbar,
• the first region comprises a plurality of first sub-busbars for collecting a photo-generated current of the first region and a plurality of main busbars, the plurality of first sub-busbars extends along a second direction and are spaced from one another along a first direction and the plurality of main busbars extends along the first direction and are spaced from one another along a second direction, and the plurality of main busbars are electrically connected to the plurality of first sub-busbars for collecting the photo-generated current of the plurality of first sub-busbars;
• the second region comprises a plurality of second sub-busbars for collecting a photo-generated current of the second region, the plurality of second sub-busbars extends along the first direction and is spaced from one another along a third direction, and the second region does not have a main busbar;
• and
• the converging busbar is electrically connected to the plurality of second sub-busbars, and the plurality of main busbars is electrically connected to the converging busbar,
• wherein the first direction is perpendicular to an extension direction of the converging busbar, and the second direction and the third direction are parallel to the extension direction of the converging busbar,
• wherein a size of the solar cell satisfies a first formula:
• W1=W2<W3;
• where W1 denotes a length of each second sub-busbar, W2 denotes a length of each first sub-busbar close to an edge of the solar cell, and W3 denotes a distance between two adjacent main busbars,
• wherein adjacent solar cells of the plurality of solar cells is electrically connected through a solder strip, each main busbar on the first surface of a solar cell is fixedly connected to one end of the solder strip, and each main busbar on the second surface of another solar cell is fixedly connected to the other end of the solder strip.