TY - JOUR
T1 - Experimental and analytical study on heat generation characteristics of a lithium-ion power battery
AU - Xie, Yongqi
AU - Tang, Jincheng
AU - Shi, Shang
AU - Wu, Hongwei
AU - Yu, Jianzu
N1 - This document is the Accepted Manuscript version of the following article: Yongqi Xie, Shang Shi, Jincheng Tang, Hongwei Wu, and Jianzu Yu, ‘Experimental and analytical study on heat generation characteristics of a lithium-ion power battery’, International Journal of Heat and Mass Transfer, Vol. 122: 884-894, July 2018.
Under embargo until 20 February 2019.
The final, definitive version is available online via: https://doi.org/10.1016/j.ijheatmasstransfer.2018.02.038
PY - 2018/7/1
Y1 - 2018/7/1
N2 - A combined experimental and analytical study has been performed to investigate the transient heat generation characteristics of a lithium-ion power battery in the present work. Experimental apparatus is newly built and the investigations on the charge/discharge characteristics and temperature rise behavior are carried out at ambient temperatures of 28 °C, 35 °C and 42 °C over the period of 1 C, 2 C, 3 C and 4 C rates. The thermal conductivity of a single battery cell is experimentally measured to be 5.22 W/(m K). A new transient model of heat generation rate based on the battery air cooling system is proposed. Comparison of the battery temperature between simulated results and experimental data is performed and good agreement is achieved. The impacts of the ambient temperature and charge/discharge rate on the heat generation rate are further analyzed. It is found that both ambient temperature and charge/discharge rate have significant influences on the voltage change and temperature rise as well as the heat generation rate. During charge/discharge process, the higher the current rate, the higher the heat generation rate. The effect of the ambient temperature on the heat generation demonstrates a remarkable difference at different charge states.
AB - A combined experimental and analytical study has been performed to investigate the transient heat generation characteristics of a lithium-ion power battery in the present work. Experimental apparatus is newly built and the investigations on the charge/discharge characteristics and temperature rise behavior are carried out at ambient temperatures of 28 °C, 35 °C and 42 °C over the period of 1 C, 2 C, 3 C and 4 C rates. The thermal conductivity of a single battery cell is experimentally measured to be 5.22 W/(m K). A new transient model of heat generation rate based on the battery air cooling system is proposed. Comparison of the battery temperature between simulated results and experimental data is performed and good agreement is achieved. The impacts of the ambient temperature and charge/discharge rate on the heat generation rate are further analyzed. It is found that both ambient temperature and charge/discharge rate have significant influences on the voltage change and temperature rise as well as the heat generation rate. During charge/discharge process, the higher the current rate, the higher the heat generation rate. The effect of the ambient temperature on the heat generation demonstrates a remarkable difference at different charge states.
KW - Heat generation model
KW - Heat generation rate
KW - Lithium-ion battery
KW - Temperature rise
KW - Thermal management system
UR - http://www.scopus.com/inward/record.url?scp=85042083461&partnerID=8YFLogxK
U2 - 10.1016/j.ijheatmasstransfer.2018.02.038
DO - 10.1016/j.ijheatmasstransfer.2018.02.038
M3 - Article
SN - 0017-9310
VL - 122
SP - 884
EP - 894
JO - International Journal of Heat and Mass Transfer
JF - International Journal of Heat and Mass Transfer
ER -