High transient dynamics in electric vehicle powertrains, especially during regenerative braking, can potentially damage lithium-ion batteries by overcharging the cells or due to current spikes exceeding allowable current limitations. Even prolonged overcharging of only 5 mV has been observed to raise significant health concerns for the battery. Therefore, this paper analyzes the impacts of regenerative braking dynamics on a hybrid active balancing scheme utilizing a reduced vehicle model based on the Ontario Tech racing electric vehicle. A comparative analysis reveals at least a 1.5% larger variation in the state of charge (SOC) and a higher minimum SOC when considering the effect of regenerative braking, as compared to the system without regenerative braking.
