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

Disclosed is an electrode assembly, a battery, and a battery pack and a vehicle including the same. The first electrode of the electrode assembly includes a first active material portion coated with an active material layer and a first uncoated portion not coated with an active material layer along a winding direction, at least a part of the first uncoated portion is defined as an electrode tab by itself, the first uncoated portion includes a plurality of segments independently bendable along the winding direction and exposed to the outside of the separator, the plurality of segments are aligned along a radial direction of the electrode assembly to form a plurality of segment alignments spaced apart in a circumferential direction, and an electrolyte impregnation portion in which an end of the first active material portion is exposed between winding turns of the separator is included between segment alignments of the first uncoated portion adjacent in the circumferential direction.