Patent ID: 11973150
Assignee: ZHEJIANG JINKO SOLAR CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 4:
5. A solar cell module, comprising a plurality of solar cells distributed along a certain arrangement direction, wherein each solar cell 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, and the converging busbar separates a second surface of the solar cell into a third region and a fourth region, the third region on the second surface of the solar cell is located on the second side of the converging busbar, and the fourth region on the second surface of the solar cell is located on the first 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 first sub-busbars are parallel to the converging busbar, 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 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 are spaced from one another along a third direction, the plurality of second sub-busbars are perpendicular to the converging busbar, 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 are 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 the plurality of first sub-busbars are not directly connected to the plurality of second sub-busbars,
wherein a size of the solar cell satisfies a first formula:

W1=W2<W3,

wherein 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, and
wherein adjacent solar cells of the plurality of solar cells are 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,
wherein an arrangement on the second surface of the solar cell is in rotational symmetry with respect to an arrangement on the first surface of the solar cell along a virtual axis of the converging busbar.