BATTERY MANAGEMENT SYSTEM AND OVER-VOLTAGE PROTECTION METHOD THEREOF

A battery management system includes a battery cell module, a switching circuit, an analog front-end circuit, an electrically erasable read-only memory which is reproducible, and a micro-controller. The switching circuit is connected in parallel with the battery cell module. The switching circuit includes a charging field-effect transistor and a discharging field-effect transistor. The analog front-end circuit is configured to monitor battery information of the battery cell module. The battery information includes a voltage of the battery cell module, a current of the battery cell module and a temperature of the battery cell module. The analog front-end circuit is connected with the switching circuit. The micro-controller stores a starting program.