Battery SOC estimating using a fractional order unscented Kalman filter

This paper presented an algorithm estimating state of charge of Lithium-ion battery by fractional order unscented Kalman filter. Lithium-ion battery was modeled by fractional order state space model. Then the fractional order state space model was discretized and implemented by unscented Kalman filter. The estimating result indicates the stability and accuracy of this algorithm.