Patent ID: 8729727

Claim:
A controller driving apparatus of an electric vehicle, the apparatus comprising: a first switch having an input side connected electrically adjacent to an input and output end of an ignition switch that is connected to one or more other controllers, and an output side connected electrically adjacent to each of a low-voltage DC-DC converter, a first signal port of a battery management system (BMS), and an electric vehicle controller; a second switch having an input side connected to an output terminal of a high-voltage DC-DC converter connected to a second signal port of the BMS and an auxiliary battery connected to one end of the ignition switch, and an output side connected electrically adjacent to each of the low-voltage DC-DC converter, the first signal port of the BMS, and the electric vehicle controller; and a third switch having an input side connected between the auxiliary battery and a third port of the BMS, and an output side connected electrically adjacent to each of the low-voltage DC-DC converter, the first signal port of the BMS, and the electric vehicle controller.