Electrode Assembly, Battery, And Battery Pack And Vehicle Including Same

Abstract: Disclosed are an electrode assembly, a battery, and a battery pack and a vehicle including same. One end portion of the electrode assembly comprises: a plurality of segment fragment alignment units in which a plurality of segment fragment groups are aligned along the radial direction; and an electrolyte-impregnated portion in which an end portion of an active material portion between the segment fragment alignment units adjacent in the circumferential direction is exposed between winding turns of a separator, wherein segment fragments included in the segment fragment alignment units form a bending surface area, and an end portion of the separator may be spaced apart from a reference line, extending in the winding axis direction along a position corresponding to a cut groove between the segment fragments, by a distance no greater than 30% of the minimum height of the segment fragments forming the bending surface area.

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