Battery Cell, and Battery Pack and Vehicle Including the Same

A battery cell includes a wound electrode assembly, a battery housing accommodating the electrode assembly therein, and a housing lid. The battery housing has a sidewall and an open end defining an opening, where the housing lid is coupled to the open end so as to cover the opening. An interior surface of the sidewall along the open end has an inclined portion to guide press-fitting of the housing lid, in which the inclined portion is oriented obliquely relative to a central axis of the battery housing. The housing lid includes a radially outer side defining a facing surface that contacts the interior surface of the sidewall at the open end. The facing surface extends longer than the inclined portion along an axial direction of the battery housing.