| 제목 |
최소 자승법을 이용한 하이브리드용 리튬이온 배터리 모델링 및 특성분석 |
| 분야 |
전기동력자동차 |
| 언어 |
Korean |
| 저자 |
김호기(현대자동차(주)), 허상진(현대자동차(주)), 강구배(현대자동차(주)) |
| Key Words |
Hybrid electric vehicle(하이브리드 전기자동차), Li-ion battery(리튬 이온 배터리), BMS(배터리 관리시스템), Least square method(최소 자승법), SOC(충전량), C-rate(충전율), Pole(극점), Zero(영점) |
| 초록 |
A lumped parameter model of Li-ion battery in hybrid electric vehicle(HEV) is constructed and system parameters are identified by using recursive least square estimation for different C-rates, SOCs and temperatures. The system characteristics of pole and zero in frequency domain are analyzed with the parameters obtained from different conditions. The parameterized model of Li-ion battery indicates highly dependant of temperatures. The system pole and internal resistance changes 6.6 and 18 times at -20℃, comparing with those at 25℃, respectively. These results will be utilized on constructing model-based state observer or an on-line identification and an adaptation of the model parameters in battery management systems for hybrid electric vehicle applications. |
| 원문(PDF) |
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