A battery module according to the present disclosure includes a plurality of cylindrical battery cells including a gas vent configured to discharge an internal gas and a busbar plate including a negative electrode connection terminal extending from an edge of a connection opening and having the extended part in contact with a negative electrode terminal to electrically connect the plurality of cylindrical battery cells wherein among a positive electrode connection terminal and the negative electrode connection terminal, the connection terminal in contact with a positive electrode terminal or a negative electrode terminal that is not opened by the gas vent includes a fuse portion configured to blow when a predetermined current or above flows from the cylindrical battery cell, the fuse portion having a bent structure that is bent in a horizontal direction at least once.