Voltage Anomaly Detection Method of Lithium-ion Battery Pack Based on an Improved Correlation Coefficient
Lithium-ion battery is the core component of the energy storage system,and its safety status directly affects the reliable operation of the energy storage system.Aiming at solving the problem that undervoltage fault and overvoltage fault are difficult to distinguish accurately,a voltage anomaly detection method based on improved correlation coefficient is proposed in this paper.Firstly,the characteristics of undervoltage fault and overvoltage fault are analyzed.Secondly,an improved correlation coefficient is developed to accurately reflect the direction of voltage change.Further,the flow of battery voltage anomaly detection is designed.Finally,the effectiveness of the proposed method is verified by experiments.
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