Battery module interface

A battery module interface is provided to realize such a compact structure that a battery module is mounted stably in a minimized space in a vehicle, and to perform effective electrical connection and communication between battery modules. A battery module interface(100) is disposed at one side of a battery module comprising a plurality of plate-like secondary cells(unit cells) capable of charge/discharge to perform electrical connection with the external device. The battery module interface comprises: a printed circuit board including a power connector(131) and a communication connector(121) for the connection with a battery module on the rear surface thereof (i.e., rear connector), and a power connector and a communication connector for the connection with the external circuits on the front surface thereof (i.e., front connector); and an outer plate(110) having an opening through which the rear connector is exposed, and coupled to the printed circuit board while surrounding the printed circuit board from the rear surface thereof.