ELECTRODE ASSEMBLY OF STAIR-LIKE STRUCTURE

摘要

Disclosed herein is an electrode assembly mounted in a battery case of a secondary battery. The electrode assembly is configured to have a structure in which a cathode and an anode are stacked in a state in which a separator plate is disposed between the cathode and the anode. The electrode assembly includes an even number of unit cells, each of the unit cells having a structure in which the uppermost electrode plate and the lowermost electrode plate have the same polarity. The electrode assembly has a stair-like structure.

主权项

1. An electrode assembly comprising:
an even number of unit cells, each of the unit cells having a structure in which electrode plates having opposite polarities are stacked in a height direction on the basis of a plane in a state in which a separator plate is disposed between the electrode plates, an uppermost electrode plate and a lowermost electrode plate have the same polarity, and electrode tabs protrude from the electrode plates, wherein the unit cells are stacked in the height direction on the basis of the plane such that the electrode plates having opposite polarities face each other in a state in which a sheet type separation film is disposed between the electrode plates, and wherein at least two of the stacked unit cells have different sizes, whereby the electrode assembly has a stair-like structure.