A battery module including a plurality of battery cells arranged in a first direction from a first end of the battery module to a second end of the battery module, each of the battery cells including a case including a vent, an electrode assembly housed in the case, and a terminal electrically coupled to the electrode assembly; a bus bar coupled between the terminals of adjacent battery cells of the plurality of battery cells; and a battery module cover covering the plurality of battery cells and including a degassing cover covering the vents of the plurality of battery cells, and a bus bar cover covering the terminals of the plurality of battery cells and the bus bar.