Provided is a battery module. The battery module includes: a plurality of battery packs; a bus bar electrically connecting neighboring battery packs to each other; and a bus bar cover covering an end portion of the bus bar for insulating the bus bar, the bus bar cover including a hollow portion through which a coupling hole of the bus bar is exposed, the hollow portion extending in a direction away from the bus bar. According to embodiments, in the battery module, the bus bar electrically connecting different battery packs is sufficiently insulated to prevent malfunctions and safety accidents caused by a short circuit of the bus bar through which charging and discharging high-voltage current flows.