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A Study of energy loss in LiFePO4 battery-balancing schemes for electric vehicle applications
Author(s)
Amtip, Adisorn
Phatrapornnant, Teera
Nuthong, Chaiwat
Kaewpunya, Amaras
Date Issued
October 15, 2014
Type
Conference Paper
Abstract
High energy density LiFePO4 battery plays an important role in the EV application. Due to strictly charging requirement, battery balancing is a necessary function in a battery management system (BMS) for charging this type of battery. Normally, there are two types of battery balancing circuit, i.e. active and passive balancing circuit. Because of simplicity, a passive circuit is chosen. Technically, passive balancing has energy loss while batteries are balancing. This research is focused on exploring three kinds of passive-balancing schemes about energy loss and at various conditions e.g. considering at balancing current or state of charge among all cells (SOCmax - SOCmin). The simulation results show that the different balancing schemes do not have significant effect on energy loss.
Citation
2014 International Electrical Engineering Congress Ieecon 2014, 2014