Tabular Open Circuit Voltage Modelling of Li-Ion Batteries for Robust SOC Estimation

Battery management systems depend on open circuit voltage (OCV) characterization for state of charge (SOC) estimation in real time. The traditional approach to OCV-SOC involves collecting data from sample battery cells and then fitting a polynomial model this data. parameters these models are known as the OCV-parameters, or parameters, used real-time SOC estimation. Even though approaches able abstract behavior few only applicable high precision computing systems. However, many practical applications do not have access high-precision resources. typical low-precision system is round OCV-parameters. This paper highlights perils rounding OCV proposes an alternative table. First, several existing compared terms their expected requirements accuracy losses due rounding. Then, systematic optimization-based introduced create table that robust A formal performance evaluation metric measure robustness resulting It shown obtained through proposed optimization outperforms parametric with respect