Cylindrical battery, and battery pack and vehicle including the same

A cylindrical battery, comprising:

• an electrode assembly in which a first electrode, a second electrode, and a separator interposed therebetween are wound around a winding axis in a winding direction to define a core and an outer circumference of the electrode assembly, the first electrode and the second electrode respectively including a first coated portion and a second coated portion coated with an active material layer along the winding direction, the first electrode and the second electrode respectively including a first uncoated portion and a second uncoated portion not coated with an active material layer along the winding direction, at least one of the first uncoated portion and the second uncoated portion being defined as an electrode tab by itself and including a core-side uncoated portion adjacent to the core of the electrode assembly, an outer circumference uncoated portion adjacent to the outer circumference of the electrode assembly, and an intermediate uncoated portion interposed between the core-side uncoated portion and the outer circumference uncoated portion, at least one of the core-side uncoated portion and the outer circumference uncoated portion having a relatively smaller height than the intermediate uncoated portion in a winding axis direction;
• a battery housing configured to accommodate the electrode assembly through an opening formed in a bottom thereof and electrically connected to the second uncoated portion;
• an external terminal electrically connected to the first uncoated portion and exposed to outside the battery housing through a closed portion of the battery housing located opposite to the opening;
• and
• a cap plate configured to cover the opening of the battery housing.