Protection circuit design of Lithium-ion battery pack based on STM32 processor

Abstract

This paper describes a protection circuit based on the STM32F103 processor used for a power lithium battery pack. The protection circuits from overcharge voltage and current and short circuiting of the battery pack are built into the system and include data collection, an equilibrium module, and switching protection. The control strategy regarding battery temperature and voltage equalization between single cell batteries is discussed.