Abstract: The present disclosure provides a preparation method of non-rectangular laminated cell, which comprises steps of: preparing k kinds of laminated cell units, wherein there are at least two kinds of laminated cell units adopting different electrode plate assemblies which are different in shape and/or size; laminating the k kinds of laminated cell units. The preparation of the i-th (i=1, 2 . . . k) kind of laminated cell unit comprises substeps of: providing a laminated pack: the laminated pack comprises ni laminated groups, the each laminated group comprises mi electrode plate assemblies which are the same in shape and size, ni?2, mi?2, the electrode plate assemblies of all the laminated groups of the laminated pack and spacers between the adjacent laminated groups are orderly positioned in a Z-shaped separator in a laminating direction; the separator is broken at an end of the each spacer positioned in the separator.

Abstract: The present disclosure provides a cell, which has a stacked body composed of a first electrode plate, a second electrode plate and separators, the stacked body has a starting end and a terminal end, the first electrode plate is provided with a first electrode tab, the second electrode plate is provided with a second electrode tab, the cell has a main body portion formed by winding a part of the stacked body from the starting end of the stacked body and a folded portion formed by folding the rest of the stacked body from a distal end of the main body portion over the main body portion and covering a part of the main body portion The cell can be formed as a step-shaped configuration by directly and sufficiently utilizing winding without cutting or treating the electrode plate, the manufacturing process is simple.