The Journal of Engineering (Jun 2019)
Online impedance spectroscopy estimation of a dc–dc converter connected battery using a switched capacitor-based balancing circuit
Abstract
This study investigates a novel method of undertaking online electrochemical impedance spectroscopy measurements to estimate battery impedance across the frequency range using a battery balancing circuit. A switched capacitor balancing system is used to generate an excitation signal of low-frequency of variable values from which battery voltage and current can be measured to estimate the impedance.
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