Abstract
Lithium-ion batteries are important for storage and delivery of electrical energy. Monitoring and prediction of the dynamic and time-dependent effects of lithium-ion batteries is crucial in a battery management system (BMS). In this paper, a dynamic model for the battery as an energy storage and delivery system is proposed. The structure and the parameters of the battery models are estimated by monitoring a charge/discharge demand signal and a power storage/delivery signal in real time. The model is combined by individual linear dynamic models, where the parameters can be estimated by a least-squares algorithm and implemented in a recursive fashion. Based on data obtained from the experimental setup, the dynamic model is applied to predict the dynamics of the energy storage and delivery, and validated against real-time measurements. The results show that the model can capture and predict the dynamics of the energy storage and delivery of the battery, which can benefit the control of lithium-ion batteries.
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