Patent ID: 9156371
Filing Date: 2015-10-13
Classification: B60L,H01M,Y02E,Y02T

Abstract:
1. A power system of an electric vehicle, comprising: a battery group; a battery management device, connected with the battery group and the battery heater respectively, and configured to control the battery heater to heat the battery group in one of a running heating mode and a parking heating mode according to a temperature and a residual electric quantity of the battery group when the temperature of the battery group is lower than a first heating threshold and the residual electric quantity of the battery group is larger than a parking electric quantity threshold; an electric distribution box, configured to distribute a voltage output by the battery group; a motor; a motor controller, connected with the motor d the electric distribution box respectively, comprising a first input terminal, a second input terminal and a pre-charging capacitor connected between the first input terminal and the second input terminal, and configured to supply power to the motor according to a control command and a voltage distributed by the electric distribution box; and an isolation inductor, connected between the battery group and the electric distribution box, wherein an inductance of the isolation inductor matches with a capacitance of the pre charging capacitor.