Cylindrical battery, and battery pack and vehicle including the same

A cylindrical battery, comprising:

• an electrode assembly including a first electrode tab and a second electrode tab;
• a battery housing configured to accommodate the electrode assembly through an open portion formed in a first side of the battery housing;
• a first current collecting plate having a support portion disposed on a first surface of the electrode assembly, at least one tab coupling portion extending from the support portion and coupled to the first electrode tab, and at least one housing coupling portion extending from an end of the at least one tab coupling portion and coupled to an inner surface of the battery housing, the first current collecting plate being located within the battery housing;
• a cap plate configured to cover the open portion of the battery housing;
• a battery terminal electrically connected to the second electrode tab;
• and
• a sealing spacer configured to prevent movement of the electrode assembly and to enhance a sealing force of the battery housing.