최소 자승법을 이용한 하이브리드용 리튬이온 배터리 모델링 및 특성분석
Modeling and Characteristic Analysis of HEV Li-ion Battery Using Recursive Least Square Estimation
김호기(현대자동차); 허상진(현대자동차); 강구배(현대자동차)
17권 1호, 130~136쪽
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°C, comparing with those at 25°C, 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.
Abstract
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°C, comparing with those at 25°C, 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.
- 발행기관:
- 한국자동차공학회
- 분류:
- 자동차공학