Adaptive Nonlinear Model-Based Fault Diagnosis of Li-ion Batteries

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2015-02
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American English
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Abstract

In this paper, an adaptive fault diagnosis technique is used in Li-ion batteries. The diagnosis process consists of multiple nonlinear models representing signature faults, such as overcharge and overdischarge, causing significant model parameter variation. The impedance spectroscopy of a Li-ion LiFePO4 cell is used, along with the equivalent circuit methodology, to construct nonlinear battery signature-fault models. Extended Kalman filters are utilized to estimate the terminal voltage of each model and to generate residual signals. The residual signals are used in the multiple-model adaptive estimation technique to generate probabilities that determine the signature faults. It can be seen that, by using this method, signature faults can be detected accurately, thus providing an effective way of diagnosing Li-ion battery failure.

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Sidhu, A., Izadian, A., & Anwar, S. (2015). Adaptive Nonlinear Model-Based Fault Diagnosis of Li-ion Batteries. Industrial Electronics, IEEE Transactions on, 62(2), 1002-1011. http://dx.doi.org/10.1109/TIE.2014.2336599
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IEEE Transactions on Industrial Electronics
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