Disclosed is a battery module allowing improved manufacturing due to easy electric connection between a bus bar assembly and secondary batteries. The battery module includes a cell stack formed by stacking a plurality of secondary batteries having electrode leads on each other; and a bus bar assembly including a connection bus bar contacting two or more of the electrode leads of the cell stack and having an insert groove formed so that at least one of the electrode leads is inserted therein, and a coupling bus bar coupled to the connection bus bar and having a rear surface formed to press the contacted electrode leads.
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