BATTERY MODULE, BATTERY PACK, AND VEHICLE

Disclosed is a battery module with improved safety from fire or explosion. To achieve the object, the battery module according to the present disclosure includes a cell assembly including a plurality of battery cells; a lower case having an open top and an accommodation space in which the cell assembly is received; an upper case which is coupled to the lower case to cover the open top of the lower case, the upper case having a connection hole in communication with the accommodation space; an upper cover which is coupled to the upper case to cover the top of the upper case, wherein part of the upper cover is spaced apart from the upper case to form a buffer space, and the upper cover has an outlet in communication with the buffer space; and a partition which is provided in the buffer space, the partition having at least part extended to form a movement passage which extends from the connection hole to the outlet, and configured to adjust an extension direction of the part.