A method for state-of-charge estimation of LiFePO4 batteries based on a dual-circuit state observer

@inproceedings{Tang2015AMF,
  title={A method for state-of-charge estimation of LiFePO4 batteries based on a dual-circuit state observer},
  author={Xiaopeng Tang and Yujie Wang and Zonghai Chen},
  year={2015}
}
Abstract Estimation of state-of-charge (SOC) is a key criterion to evaluate the battery management system (BMS). Due to the flat open-circuit voltage (OCV)–SOC curve of LiFePO 4 batteries, it is a great challenge to estimate the SOC accurately. Here we present a dual-circuit state observer for SOC estimation of LiFePO 4 batteries. It is a combination of an open loop based current integrator and a proportional-integral (PI) based state observer. We also employed an easy but practical drifting… CONTINUE READING

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