Abstract:

Energy storage device charging system is an important part of the photovoltaic power generation system,in which the selection of charging method plays a decisive role.This paper introduces a charging system based on taking STM32 as the main core processor,adopting a new type of intelligent charging method combined with MPPT algorithm to charge the device of energy storage.This method can effectively improve the charging efficiency of lithium batteries while preventing the battery overcharging with such functions as overdischarging,overcurrent,shortcircuit and temperature protection and temperature compensation.

Key words: MPPT;energy storage;STM32;photovoltaic power generation system