A Model-Based Sensor Fault Diagnosis Scheme for Batteries in Electric Vehicles

Quanqing Yu, Changjiang Wan, Junfu Li, Rui Xiong and Zeyu Chen
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Quanqing Yu: School of Automotive Engineering, Harbin Institute of Technology, Weihai 264209, China
Changjiang Wan: School of Automotive Engineering, Harbin Institute of Technology, Weihai 264209, China
Junfu Li: School of Automotive Engineering, Harbin Institute of Technology, Weihai 264209, China
Rui Xiong: National Engineering Laboratory for Electric Vehicles, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
Zeyu Chen: School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China

Energies, 2021, vol. 14, issue 4, 1-15

Abstract: The implementation of each function of a battery management system (BMS) depends on sensor data. Efficient sensor fault diagnosis is essential to the durability and safety of battery systems. In this paper, a model-based sensor fault diagnosis scheme and fault-tolerant control strategy for a voltage sensor and a current sensor are proposed with recursive least-square (RLS) and unscented Kalman filter (UKF) algorithms. The fault diagnosis scheme uses an open-circuit voltage residual generator and a capacity residual generator to generate multiple residuals. In view of the different applicable state of charge (SOC) intervals of each residual, different residuals need to be selected according to the different SOC intervals to evaluate whether a sensor fault occurs during residual evaluation. The fault values of the voltage and current sensors are derived in detail based on the open-circuit voltage residual and the capacity residual, respectively, and applied to the fault-tolerant control of battery parameters and state estimations. The performance of the proposed approaches is demonstrated and evaluated by simulations with MATLAB and experimental studies with a commercial lithium-ion battery cell.

Keywords: battery management system; sensor fault diagnosis; fault-tolerant control; state of charge; open-circuit voltage; multiple residuals (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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