Title :
Effects of temperature on dynamic characteristics of li-ion batteries in electric vehicle applications
Author :
Yong Li ; Lifang Wang ; Chenglin Liao ; Wu Lingfei ; Li Junfeng ; Guo Yanjie
Author_Institution :
Key Lab. of Power Electron. & Electr. Drive, Inst. of Electr. Eng., Beijing, China
fDate :
Aug. 31 2014-Sept. 3 2014
Abstract :
Temperature is a key factor that influences the dynamic performance of lithium-ion batteries. The purpose of this study is to investigate the effects of temperature on dynamic characteristics of lithium-ion battery. In this article, the charge and discharge behaviors are studied through battery tests at different temperatures. Based on the tests, the maximum available charge and discharge capacity is analyzed. A model-based subspace identification algorithm is adopted to investigate the quantitative effects of temperature on internal resistance and polarization. Results show that both internal resistance and polarization time increase as the temperature decreases. This explains the reason for difference in dynamic characteristics of lithium-ion battery at different temperatures.
Keywords :
battery powered vehicles; secondary cells; battery tests; discharge capacity; electric vehicle; internal resistance; model based subspace identification algorithm; polarization time; secondary batteries; Batteries; Discharges (electric); Equations; Mathematical model; Resistance; System-on-chip; Temperature; dynamic characteristics; internal resistance; lithium-ion battery; low temperature; polarization;
Conference_Titel :
Transportation Electrification Asia-Pacific (ITEC Asia-Pacific), 2014 IEEE Conference and Expo
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-4240-4
DOI :
10.1109/ITEC-AP.2014.6940648
