VEHICLE HIGH-VOLTAGE CHARGING SYSTEM USING A MOTOR DRIVING SYSTEM

The present invention relates to A vehicle high-voltage charging system using a motor driving system, comprising: an inverter (10) connected to a rechargeable battery (40); a motor (20) connected to the inverter (10) and configured to supply power, which is provided to a neutral point (N) of the motor (20), to the inverter (10); a first relay (R1) having one end connected to the charging power input terminal and an opposite end; a neutral point capacitor (Cn) arranged on a by-pass path, wherein a first end of the by-pass path is connected to the neutral point and a charging power input terminal to which DC charging power is adapted to input, and a second end of the by-pass path is connected to the rechargeable battery and the opposite end of the opposite end of the first relay; characterized in that the charging system further comprises a second relay (Rn), wherein the in series second relay (Rn) arranged in the by-pass path and with the neutral point capacitor (Cn). [0002] The charging system has the advantage of compact size and low cost.