Power supply control circuit and energy storage system

Abstract

This application relates to a power supply control circuit and an energy storage system. The power supply control circuit includes a power supply circuit, an identification module, a control module, and a pulse generation module. The identification module outputs a critical signal when the voltage difference between the input and output terminals of the power supply circuit switches to a critical voltage region; the critical voltage region is between a boost region and a buck region. The control module outputs a trigger signal upon receiving the critical signal, and then outputs a first boost pulse width modulation signal after a preset time interval to drive the voltage conversion module in a continuous boost operation state. The pulse generation module outputs a single pulse signal upon receiving the trigger signal to drive the voltage conversion module to perform one boost operation cycle; wherein the time for outputting the first boost pulse width modulation signal is after the time for outputting the single pulse signal. Using the power supply control circuit of this application can improve the power supply reliability of the power supply circuit.

Images