Battery Module Using Non-Welding Type Structure as Connection Structure of Bus Bar and Voltage Sensing Member

A battery module including battery cells connected in series or connected in series and in parallel, a plurality of bus bars connected to corresponding electrode leads of the battery cells and respectively having a keyway recessed from a surface thereof, and a voltage sensing member having sensing parts respectively connected to the bus bars. The sensing part includes a terminal portion provided in a shape corresponding to the keyway, and a bonding portion interposed in the keyway to connect the terminal portion to the keyway.