STEPPED ELECTRODE ASSEMBLY HAVING PREDETERMINED A THICKNESS RATIO IN THE INTERFACE BETWEEN ELECTRODE UNITS, BATTERY CELL AND DEVICE COMPRISING THE SAME

摘要

There are provided an electrode assembly, and a battery cell, a battery pack, and a device. The electrode assembly includes a combination of two or more types of electrode units having different areas, wherein the electrode units are stacked such that steps are formed, and electrode units are formed such that a positive electrode and a negative electrode face one another at an interface between the electrode units.