Patent ID: 8855843

Claim:
A starting control device for an electric vehicle, comprising: a main battery charged by an external battery charger; a main switch for designating an operational state of a vehicle; a motor for generating a driving force of the vehicle by electric power supplied from the main battery; an electric power converting unit for converting an output voltage of the main battery to a low voltage; a sub-battery charged with output electric power of the main battery converted to low voltage by the electric power converting unit only when the main switch of the vehicle is turned on to put the power supply in an on-state; a vehicle drive control unit started by electric power supplied from the sub-battery to drive the electric power converting unit; and a normal system line (L 3 ) having two portions, the main switch being located between and connecting the two portions, wherein the portion of the normal system line (L 3 ) extending from one side of the main switch is directly connected to the vehicle drive control unit in a fixed manner, and the portion of the normal system line (L 3 ) extending from an opposite side of the main switch is directly connected to each of the sub-battery, an output side of the electric power converting unit, and the main battery in a fixed manner, so that when the main switch is on an off-state, the normal system line (L 3 ) between the vehicle drive control unit and the main battery is open, and wherein in the case where the sub-battery is at a charging level not to drive the electric power converting unit, the vehicle drive control unit causes the electric power converting unit to operate by the electric power supplied from the battery charger to thereby put the vehicle in an operating state when the battery charger is put in a connecting state with the main switch in the on-state, and outputs a signal for charging the main battery to the battery charger when the battery charger is put in the connecting state with the main switch in the off-state.