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

Abstract: Disclosed are an electrode assembly, a battery, and a battery pack and vehicle including same. A first electrode of the electrode assembly comprises a first active material portion that is coated with an active material layer in a winding direction and a first uncoated portion that is not coated with an active material layer and is exposed to the outside of the separator. The first uncoated portion includes a first portion adjacent to a core of the electrode assembly, a second portion adjacent to the outer circumferential surface of the electrode assembly, and a third portion between the first portion and the second portion. The third portion includes a plurality of segments which are spaced apart from each other along the winding direction by a plurality of cutting grooves along the winding axis direction. The height of the first portion may be lower than the height of the uncoated portion at the bottom of the cutting grooves.

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