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

Abstract: An electrode assembly according to the present invention has a configuration in which a first electrode, a second electrode, and a separator interposed therebetween are wound around a winding axis, wherein the first electrode includes an insulating layer that covers the boundary between an uncoated portion and a coated portion along the winding direction. The uncoated portion of the first electrode includes a plurality of segments separated from each other by cutting lines that are repeatedly formed along the winding direction. The plurality of segments are bent along the radial direction of the electrode assembly, thus forming a bent surface. The distance between a reference line and one end of the separator in the winding axis direction is at most 30% of the height of a minimum segment, where the reference line is a line passing through the lowest point in a region of the uncoated portion of the first electrode, and the minimum segment is the shortest segment among the segments forming the bent surface.

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