| 主权项 |
1. A power system of an electric vehicle, comprising:
a battery group; a battery heater, connected with the battery group and configured to charge and discharge the battery group to heat the battery group, wherein the battery heater comprises an output power adjusting module configured to adjust a heating power of the battery heater by adjusting at least one of a charge current and a discharge current; a battery management device, connected with the battery group and the battery heater respectively, and configured to control the output power adjusting module to adjust the heating power of the battery heater to heat the battery group according to a temperature of the battery group when the temperature of the battery group is lower than a first heating threshold and a 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 and 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. |
