METHODS AND SYSTEMS FOR ESTIMATING CHARGE CAPACITY OF AN ELECTRICAL ENERGY-STORAGE DEVICE

摘要

A method of operating a power system (10) with an electrical energy- storage device (64) is disclosed. The method may include estimating with at least one information-processing device (66) a present charge capacity (Cp) of the electrical energy-storage device. This may include determining an estimated fatigue-adjusted discharge value (DISfa) by determining an estimated amount of electrical energy discharged (DIS) from the electrical energy-storage device and applying a fatigue factor (FF) to the estimated amount of electrical energy discharged. The fatigue factor may be determined based on a magnitude of electricity discharged from the electrical energy-storage device. The method may also include estimating the present charge capacity of the electrical energy- storage device based on the estimated fatigue-adjusted discharge value and an estimated full capacity (Cfull) of the electrical energy-storage device.