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(주) 하이브리드개발실) ;
  • 허상진 (현대자동차(주) 하이브리드개발실) ;
  • 강구배 (현대자동차(주) 하이브리드개발실)
  • Kim, Ho-Gi (Hybrid Vehicle Development Division, Hyundai Motor Company) ;
  • Heo, Sang-Jin (Hybrid Vehicle Development Division, Hyundai Motor Company) ;
  • Kang, Gu-Bae (Hybrid Vehicle Development Division, Hyundai Motor Company)
  • 발행 : 2009.01.01

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 $-20^{\circ}C$, comparing with those at $25^{\circ}C$, 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.

키워드

참고문헌

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