METHOD FOR CONTROLLING BATTERY POWER INTERFACE CONVERTER WITH ULTRA-WIDEBAND EIS MEASUREMENT FUNCTION

The present disclosure is a method for controlling a battery power interface converter with an ultra-wideband EIS measurement function. According to the present disclosure, a discrete pulse control method based on discrete pulse modulation is adopted, which, by generating two discrete duty ratio signals and according to a relationship between a battery charging current and a reference current, selects an appropriate duty ratio signal from the two discrete duty ratio signals to generate a control pulse signal to act on the battery power interface converter. The method of the present disclosure achieves accurate tracking of the output current of the power interface converter to DC charging or ultra-wideband hybrid reference current. A battery charging control system can achieve a normal constant-current charging function while operating in a constant-current charging mode and the ultra-wideband EIS of a battery accurate measurement function in an EIS measurement mode.