Battery management system with dual-balancing mechanism for LiFePO4 battery module

This paper presents a battery management system of LiFePO₄ battery module with dual-balancing mechanism. First, the employed battery management can accurately capture some important parameters of the LiFePO₄ battery module, including voltage, current, temperature, and providing protection functions for the battery module. Next, these obtained parameters of the battery are transmitted to the microcontroller through the inter-integrated circuit (I²C-bus). And then the microcontroller can control the pack balancing circuit according to the received battery information. The proposed dual-balancing mechanism can avoid battery unbalance so as to increase the utility rate of the battery. Finally, some experimental results are used to verify the feasibility of the complete system.