ELECTRIC AUTOMOBILE AND POWER SYSTEM SWITCHING BETWEEN CHARGING/DISCHARGING AND DRIVING FUNCTIONS

摘要

A power system switching between charging/discharging and driving functions comprises: a power battery (10); a charging/discharging socket (20); a bi-directional DC/DC module (30); a driving control switch (40); a bi-directional DC/AC module (50); a motor control switch (60); a charging/discharging control module (70); and a controller module (80). The controller module is connected to the driving control switch, the motor control switch, and the charging/discharging control module. The controller module establishes a closed circuit between the power battery and a motor (M) when the current working mode of the power system is a drive mode, and establishes a closed circuit between the charging/discharging socket and the power battery when the current working mode of the power system is a charging/discharging mode. The power system is capable of performing large-power AC charging on an electric automobile with AC power grids for civil or industrial use, so that a user can charge the electric automobile efficiently and conveniently at any place anytime. Moreover, the power system is applicable to batteries of a wide working voltage range, the occupied space thereof is saved and the cost is low.