Capacity Estimation of Li-ion battery using Constant Current Charging Voltage

An accurate estimation of Li-ion battery capacity is important in operating drones or electric vehicles. In this paper, we proposed the capacity estimation method using Constant Current Charging Voltage. For robustness against initial state of charge, voltage curve of constant current charging, initial state of charge and charging time are used as input of multilayer perceptron. The proposed algorithm is verified with experimental data. The capacity estimation result shows that the mean absolute error and the maximum error were lower than 0.32% and 1.81%.