A Charging Method of Power Li-Ion Battery for Low Temperature

Mei Zunyu, Wu Xiaogang, Hu Chen

Automobile Technology - - 汽车技术 -

Harbin University of Science and Technology, Harbin 150080) (

The charge progress at low temperature was analyzed by the first order RC equivalent circuit battery【Abstract】model and the multi-stage constant current charge method for charging Li-ion battery at low temperature was proposed. The ternary polymer Li- ion battery and LiFePO4 battery were selected as the test batteries, the charge method under regular constant current- constant voltage (CC- CV) and multi- stage constant current was tested at 0 ℃ and - 10 ℃, compared and analyzed. The test results show that, compared with CC- CV charging method, the multi- stage constant current charging method shortened the charging time of two batteries and increased electric quantity charged substantially at 0 ℃ and -10 ℃.

Key words: Li-ion battery, Battery charge, Charge strategy, Low temperature

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