State-of-Charge and State-of-Health Estimating Method for Lithium-Ion Batteries

This research is focused on the estimation and calibration of state-of-charge (SOC) and state-of-health (SOH) for lithium-ion batteries, on basis of coulomb counting process. The proposed method is aimed to provide an accurate and easy-to-use solution for online indication of battery statuses without the need of sophisticated calculations or intricate information. With real-time coulomb counting, batteries' SOHs are cyclically updated simply by standard or partial calibration with estimated fully charged or discharged SOCs. Experiments are conducted on exemplar cases to verify the accuracy and practicability of the proposed method.