TY - GEN
T1 - Improving the low-temperature performance of electric vehicles by hybrid energy storage systems
AU - Keil, Peter
AU - Jossen, Andreas
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2014
Y1 - 2014
N2 - Electric vehicles based on high-energy Li-ion batteries often show a substantial loss in performance at cold temperatures: Due to slower electrochemical kinetics, internal resistances of the battery rise and available power and capacity diminish. In order to overcome these weaknesses, a selection of hybrid energy storage systems (HESS) is investigated here: Different hybrid systems combine a high-energy Li-ion battery with either a double-layer capacitor or a Li-ion capacitor or a high-power Li-ion battery. For these three types of HESS, experimental studies performed at various temperatures reveal available energy under realistic driving conditions. At temperatures of 0 x000B0;C and below, an increased driving range can be achieved with two of the three HESS combinations. Depending on the available space for the energy storage system, either the HESS utilizing a Li-ion capacitor or the HESS utilizing a high-power Li-ion battery is found to be the most promising solution for electric vehicle applications.
AB - Electric vehicles based on high-energy Li-ion batteries often show a substantial loss in performance at cold temperatures: Due to slower electrochemical kinetics, internal resistances of the battery rise and available power and capacity diminish. In order to overcome these weaknesses, a selection of hybrid energy storage systems (HESS) is investigated here: Different hybrid systems combine a high-energy Li-ion battery with either a double-layer capacitor or a Li-ion capacitor or a high-power Li-ion battery. For these three types of HESS, experimental studies performed at various temperatures reveal available energy under realistic driving conditions. At temperatures of 0 x000B0;C and below, an increased driving range can be achieved with two of the three HESS combinations. Depending on the available space for the energy storage system, either the HESS utilizing a Li-ion capacitor or the HESS utilizing a high-power Li-ion battery is found to be the most promising solution for electric vehicle applications.
KW - Battery electric vehicle
KW - Hybrid energy storage system
KW - Li-ion battery
KW - Li-ion capacitor
KW - Supercapacitor
UR - http://www.scopus.com/inward/record.url?scp=84988285664&partnerID=8YFLogxK
U2 - 10.1109/VPPC.2014.7007087
DO - 10.1109/VPPC.2014.7007087
M3 - Conference contribution
AN - SCOPUS:84988285664
T3 - 2014 IEEE Vehicle Power and Propulsion Conference, VPPC 2014
BT - 2014 IEEE Vehicle Power and Propulsion Conference, VPPC 2014
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2014 IEEE Vehicle Power and Propulsion Conference, VPPC 2014
Y2 - 27 October 2014 through 30 October 2014
ER -