Modeling and Charge-Discharge control of Li-ion Battery using Simulink
Author(s):
Dr. Supanna S. Shirguppe, Basavaraj Hugar
Keywords:
battery model, charge-discharge characteristics, lithium-ion battery, state of charge.
Abstract
Lithium-ion batteries have become increasingly popular in the recent days due to their high power/energy density, high nominal voltage, long life, fast charge rate etc. This had led to their increased usage in Electric vehicle (EV) applications as an energy storage system. The design of any efficient battery powered system requires accurate mathematical and simulation models of the battery which play an important role in predicting its electrical characteristics. The performance of a battery depends largely on the state-of-charge (SOC) which is an important parameter that is used to determine its charge/discharge characteristics. Thus, to prevent overcharging and discharging and protect the battery, an accurate estimation of the SOC is very much necessary. This paper demonstrates the development of an electrical battery simulation model in MATLAB/Simulink. A lithium-ion battery is considered to give a detailed explanation of the building of the battery model blocks and their interconnection. The battery model so developed is validated by comparing with a standard battery available in the MATLAB/Simulink library. The developed model could be used for other battery types as well. Further, the control of charge-discharge characteristics and battery voltage characteristics for different load powers of the modeled Li-ion battery is also presented.
Article Details
Unique Paper ID: 158579

Publication Volume & Issue: Volume 9, Issue 10

Page(s): 82 - 86
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