ELECTRODE ASSEMBLY, BATTERY, AND BATTERY PACK AND VEHICLE INCLUDING THE SAME

Disclosed is an electrode assembly, a battery, and a battery pack and a vehicle including the same. At least one of the first electrode and the second electrode includes an uncoated portion at a long side end, a part of the uncoated portion is exposed to the outside of the separator along a longitudinal direction of the electrode assembly, at least a part of the uncoated portion is bent in a radial direction of the electrode assembly to form a bending surface, and the bending surface may include a region in which the number of overlapping layers of the uncoated portion is substantially kept constant as a criterion layer number along the radial direction The welding region of the current collecting plate welded to the bending surface may overlap with the region in which the number of overlapping layers of the uncoated portion is kept as the criterion layer number.