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Energies 2017, 10(5), 714; doi:10.3390/en10050714

Insulation Resistance Monitoring Algorithm for Battery Pack in Electric Vehicle Based on Extended Kalman Filtering

1
State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China
2
School of Mechanical Science and Engineering, Jilin University; Changchun 130022, China
3
Department of Automotive Engineering, College of Automotive Engineering, Jilin University, Changchun 130022, China
*
Author to whom correspondence should be addressed.
Academic Editor: Rui Xiong
Received: 16 March 2017 / Revised: 1 May 2017 / Accepted: 12 May 2017 / Published: 18 May 2017
(This article belongs to the Section Electrical Power and Energy System)
View Full-Text   |   Download PDF [4472 KB, uploaded 18 May 2017]   |  

Abstract

To improve the accuracy of insulation monitoring between the battery pack and chassis of electric vehicles, we established a serial battery pack model composed of first-order resistor-capacitor (RC) circuit battery cells. We then designed a low-voltage, low-frequency insulation monitoring model based on this serial battery pack model. An extended Kalman filter (EKF) was designed for this non-linear system to filter the measured results, thus mitigating the influence of noise. Experimental and simulation results show that the proposed monitoring model and extended Kalman filtering algorithm for insulation resistance monitoring present satisfactory estimation accuracy and robustness. View Full-Text
Keywords: insulation resistance; first-order resistor-capacitor (RC) circuit; battery pack model; extended Kalman filtering (EKF); electric vehicle insulation resistance; first-order resistor-capacitor (RC) circuit; battery pack model; extended Kalman filtering (EKF); electric vehicle
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Song, C.; Shao, Y.; Song, S.; Peng, S.; Zhou, F.; Chang, C.; Wang, D. Insulation Resistance Monitoring Algorithm for Battery Pack in Electric Vehicle Based on Extended Kalman Filtering. Energies 2017, 10, 714.

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