This paper introduces a Smart Battery Pack (SBP) for Electric Vehicles (EV) application where many Li-ion battery cells connected in series are need to be balanced. The advantages of SBP over conventional methods are high effciency, low switching frequency, and simple topology. Solution is brought by connecting battery-cells using half bridges which allows inserting or bypassing a cell based on its current state of charge (SOC), thereby balancing. Consequently, the output voltage is reduced by the overall voltage of bypassed cells. Simulation results show comparison between SBP and series connected battery pack in terms of battery utilization and discharging time.
Majmunovic, B., Sarda, R., Teodorescu, R., Lascu, C., Ricco, M. (2017). Highly efficient smart battery pack for EV drivetrains. 345 E 47TH ST, NEW YORK, NY 10017 USA : Institute of Electrical and Electronics Engineers Inc. [10.1109/VPPC.2017.8330868].
Highly efficient smart battery pack for EV drivetrains
Ricco, Mattia
2017
Abstract
This paper introduces a Smart Battery Pack (SBP) for Electric Vehicles (EV) application where many Li-ion battery cells connected in series are need to be balanced. The advantages of SBP over conventional methods are high effciency, low switching frequency, and simple topology. Solution is brought by connecting battery-cells using half bridges which allows inserting or bypassing a cell based on its current state of charge (SOC), thereby balancing. Consequently, the output voltage is reduced by the overall voltage of bypassed cells. Simulation results show comparison between SBP and series connected battery pack in terms of battery utilization and discharging time.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
