Online weighing method for solar cell printing line

The invention provides a solar cell printing line on-line weighing method, and belongs to the technical field of solar cell manufacturing, and the on-line weighing method comprises the following steps: before a cell enters a first printing position, a first cell taking device puts the cell into a first weighing device to obtain the dry weight of the cell before first printing; after a battery piece is printed for the first time at the first printing position, the second piece taking device places the battery piece on the battery piece transmission line, the battery piece is conveyed through the battery piece transmission line, and the first piece taking device places the battery piece into the first weighing device to obtain the wet weight of the battery piece after the first time of printing; by analogy, the dry weight and the wet weight of the battery piece are obtained by adopting the same weighing device before and after the printing position, and the battery piece is placed back to the original piece tak