Battery Module Having Structure Facilitating Series-Parallel Connections and Battery Pack Comprising Same

A battery module includes: a unit module stack formed by stacking a plurality of unit modules, each of which has a battery cell, a bus bar attached to an electrode lead provided to the battery cell, and a bus bar frame attached to a terrace portion of the battery cell to accommodate at least a portion of the electrode lead and the bus bar, wherein each bus bar frame includes a connector holder; and a connector fixed by the connector holders of at least two unit modules of the plurality of unit modules to contact the bus bar.