DC contactor combined circuit for electric automobile

The utility model discloses a DC contactor combined circuit for electric automobile including a main contactor, a charging contactor, a charging resistor, a discharging resistor, a supporting capacitor, a power voltage sensor, a capacitor voltage sensor, and a power unit. The power voltage sensor, the capacitor voltage sensor, and the supporting capacitor are successively connected at the positive and negative ends of a high-voltage power supply, the charging contactor and the charging resistor after being serially connected is in parallel connection with the main contactor to form a parallel circuit, the parallel circuit is connected between the power voltage sensor and the capacitor voltage sensor, and the combined circuit is characterized in that one end of the discharging resistor is connected between the charging contactor and the charging resistor, and the other end of the discharging resistor is connected with the negative end of the high-voltage power supply. Compared with the prior art, the DC contactor combined circuit has the advantages of reliable performance and long service life.