Electric driving system of new energy automobile

The invention discloses an electric driving system of a new energy automobile. The electric driving system of the new energy automobile comprises an isolation-type non-full-bridge DC-DC converter, a low-voltage battery LV, a converter controller, a high-voltage battery HV, a motor driver, a driver controller and a three-phase alternating current motor, wherein the low-voltage battery LV, the converter controller, the high-voltage battery HV and the motor driver are respectively connected with the isolation-type non-full-bridge DC-DC converter, the driver controller and the three-phase alternating current motor are respectively connected with the motor driver, the high-voltage battery HV is connected with the motor driver, and a dotted terminal (A) of a high-voltage side of the isolation-type non-full-bridge DC-DC converter is connected with a neutral point O of a winding of the three-phase alternating current motor. The electric driving system of the new energy automobile can overcome the defects of large occupied space, high cost, low energy conversion efficiency and the like in the prior art, and achieve the advantages of small occupied space, low cost and high energy conversion efficiency.