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

fYear

2014

fDate

Aug. 31 2014-Sept. 3 2014

Firstpage

1

Lastpage

6

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Transportation Electrification Asia-Pacific (ITEC Asia-Pacific), 2014 IEEE Conference and Expo

Conference_Location

Beijing

Print_ISBN

978-1-4799-4240-4

Type

conf

DOI

10.1109/ITEC-AP.2014.6940648

Filename

6940648