To provide a connection structure for motor-driven vehicle by which connection work or disassembly work is facilitated.

On the inner surface of the sidewall 36B of a battery housing part 36 on a rear vehicle part side, a lock lever 40 energized upwards at all times by an extension coil spring 46 is disposed in the state of being pivotally supported by a swing shaft 41. A battery receiving part 43 for receiving a battery is bent to an inner side and formed at a suspension part 42 formed projectingly downwards from the lock lever 40 and the lock lever 40 can be swung and displaced downwards by the weight of the battery mounted there. On the swing end 48 of the lock lever 40, a lock pin 49 is disposed projectingly to an outer side and it can be advanced to a connection space on the outer side through a relief groove 50 formed at a lower part accompanying the swing displacement of the lock lever 40. The lock pin 49 can be fitted to a lock groove 26 formed on a connection bracket 22 on a front vehicle part side advanced into the connection space.