TY - GEN
T1 - Optimized design of an onboard resonant self-heater for automotive lithium-ion batteries at cold climates
AU - Zhu, Chong
AU - Shang, Yunlong
AU - Lu, Fei
AU - Zhang, Hua
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/9
Y1 - 2019/9
N2 - The automotive lithium-ion batteries suffer severe capacity and power degradation at subzero temperatures, leading to serious "range anxiety" of the electric vehicles (EVs). Therefore, the onboard battery preheating equipment is essential for EVs at cold climates. In this study, an interleaved resonant onboard battery self-heater is developed for internally preheating the automotive batteries without external power supplies, thereby providing great flexibility for EVs at different parking areas. By properly adjusting the switching frequency, the self-heater can achieve the zero-current-switching (ZCS) to improve the energy consumption and eliminate the voltage spikes during the turn-off. Meanwhile, a detailed guideline for optimizing the resonant tank parameters is presented so that the efficiency of the self-heater can be further developed by reducing the circulating current. The experimental validation on 18650 cells demonstrates the proposed heater can preheat the battery from -20°C to 0°C within only 3.5 minutes, and only consumes 5% of the cell energy.
AB - The automotive lithium-ion batteries suffer severe capacity and power degradation at subzero temperatures, leading to serious "range anxiety" of the electric vehicles (EVs). Therefore, the onboard battery preheating equipment is essential for EVs at cold climates. In this study, an interleaved resonant onboard battery self-heater is developed for internally preheating the automotive batteries without external power supplies, thereby providing great flexibility for EVs at different parking areas. By properly adjusting the switching frequency, the self-heater can achieve the zero-current-switching (ZCS) to improve the energy consumption and eliminate the voltage spikes during the turn-off. Meanwhile, a detailed guideline for optimizing the resonant tank parameters is presented so that the efficiency of the self-heater can be further developed by reducing the circulating current. The experimental validation on 18650 cells demonstrates the proposed heater can preheat the battery from -20°C to 0°C within only 3.5 minutes, and only consumes 5% of the cell energy.
UR - http://www.scopus.com/inward/record.url?scp=85076766620&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85076766620&partnerID=8YFLogxK
U2 - 10.1109/ECCE.2019.8912878
DO - 10.1109/ECCE.2019.8912878
M3 - Conference contribution
AN - SCOPUS:85076766620
T3 - 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019
SP - 5084
EP - 5088
BT - 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019
Y2 - 29 September 2019 through 3 October 2019
ER -