Title :
Thermal modelling of large-format laminated Li-ion battery and experimental validation using embedded thermocouples
Author :
Bin Wu ; Zhe Li ; Jianbo Zhang ; Jun Huang ; Zhihua Nie ; Ying Sun ; Fuqiang An ; Ningning Wu
Author_Institution :
State Key Lab. of Automotive Safety & Energy, Tsinghua Univ., Beijing, China
Abstract :
Thermal modelling for lithium ion batteries is important to evaluate battery thermal safety and to refine battery thermal designs. To develop a reliable and efficient thermal model, the following key factors needs to be addressed: the techniques to accurately determine the thermal parameters and heat generation rates, the reasonably simplified thermo-electrical equations and the experimental validation. In this study, a new transient method is developed to measure the thermal parameters of a large-format laminated battery. The reversible and irreversible heat generation rates were measured for different states of charge and temperatures. With the measured thermal parameters and heat generation rates, the temperature distribution of the battery was predicted based on a thermal-electrical coupled model. The prediction was found in good agreement with embedded-sensor experimental results.
Keywords :
intelligent sensors; secondary cells; temperature distribution; temperature measurement; thermal analysis; thermocouples; battery thermal designs; battery thermal safety; embedded thermocouples; irreversible heat generation rates; laminated lithium ion battery; temperature distribution; thermal modelling; thermal-electrical coupled model; thermoelectrical equations; Batteries; Battery charge measurement; Electrical resistance measurement; Heating; Mathematical model; Temperature measurement; Thermal conductivity; Embedded-thermocouples; Lithium-ion battery; Thermal modelling; Thermal parameter;
Conference_Titel :
Electric Vehicle Symposium and Exhibition (EVS27), 2013 World
Conference_Location :
Barcelona
DOI :
10.1109/EVS.2013.6914769