Battery cell, method for manufacturing same, and battery pack and vehicle comprising same

Abstract

The present invention may comprise: an electrode assembly in which a first electrode, a second electrode, and a separator interposed therebetween are wound about a winding axis; a can configured to accommodate the electrode assembly through an open end formed on one side thereof; a lid covering the open end and having an injection port formed at the center thereof; an injection plug configured to be inserted into and seal the injection port; and a gasket interposed between the injection plug and the lid, wherein the gasket has at least three surfaces thereof in contact with an injection-port peripheral portion, surrounding the injection port, of the lid.

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