Battery printing method and solar battery

The embodiment of the invention relates to the technical field of solar cells, and provides a cell printing method and a solar cell. The cell printing method comprises the steps that a cell piece is provided, and a plurality of electrodes are arranged on the surface of the cell piece; forming a plurality of first grid lines extending along a first direction on the surface of the battery piece by adopting a first printing process, wherein the first grid lines are electrically connected with the plurality of electrodes; a plurality of second grid lines extending in the second direction are formed on the surface of the battery piece through at least two second printing processes, the second grid lines are of a stacked structure, the second direction intersects with the first direction, the second grid lines are electrically connected with the first grid lines, and the arrangement density of the second grid lines is larger than that of the first grid lines. The battery printing method provided by the embodiment o