Electric vehicle

An electric vehicle driven by at least one vehicle driving motor, the electric vehicle comprising:

• a controller and an electric power supplier,
• wherein the electric power supplier comprises;
• a direct-current (DC) power source;
• a DC-link condenser to which electrical loads are connected;
• a software type condenser changing circuit connected between the DC power source and the DC-link condenser, and configured to operate when the controller controls the software type condenser charging circuit while monitoring a voltage between opposite ends of the DC-link condenser at an initial charging stage;
• and
• a hardware type condenser charging circuit connected between the DC power source and the DC-link condenser, and configured to operate when the controller controls the hardware type condenser charging circuit without monitoring the voltage between the opposite ends of the DC-link condenser at the initial charging stage, or by a direct switching manipulation of a user,
• wherein the hardware type condenser charging circuit comprises:
• a first relay connected between a positive terminal of the DC power source and a positive terminal of the DC-link condenser;
• and
• a relay driving circuit configured to turn the first relay on when a voltage of the DC-link condenser is higher than a set initial voltage,
• wherein the relay driving circuit comprises a switching transistor, a comparator, and a voltage detection circuit,
• the voltage detection circuit is connected to the opposite ends of the DC-link condenser,
• when the switching transistor is in a turn-on state, an exciting current path of the first relay is formed,
• when the switching transistor is in a turn-off state, the exciting current path of the first relay is blocked, and
• when a detection voltage detected by the voltage detection circuit is higher than a set detection voltage, the switching transistor is turned on by the comparator.