지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2011.3
- 수록면
- 237 - 243 (7page)
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초록· 키워드
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Lithium batteries are widely used in mobile electronic devices due to their higher voltage and energy density, lighter weight and longer life cycle when compared to other secondary batteries. In particular, a high demand for lithium batteries is expected for electric cars. In the case of the lithium batteries used in electric cars, driving distance must be calculated accurately and discharging should not be done below a level that makes it impossible to crank. Therefore, accurate information on the state-of-charge (SOC) becomes an essential element for reliable driving. In this paper, a novel method for estimating the SOC of lithium polymer batteries using AC impedance is proposed. In the proposed method, the parameters are extracted by fitting the measured impedance spectrum on an equivalent impedance model and the variation in the parameter values at each SOC is used to estimate the SOC. Also to shorten the long length of time required for the measurement of the impedance spectrum, a novel method is proposed that can extract the equivalent impedance model parameters of lithium polymer batteries with the impedance measured at only two specific frequencies. Experiments are conducted on lithium polymer batteries, with similar capacities, made by different manufacturers to prove the validity of the proposed method.
목차
Abstract
Ⅰ. INTRODUCTION
Ⅱ. EXPERIMENTAL
Ⅲ. RESULTS AND DISCUSSION
Ⅳ. EXPERIMENTS WITH BATTERIES BY DIFFERENT MANUFACTURERS
Ⅴ. SIMPLIFIED METHOD FOR THE EXTRACTION OF EQUIVALENT CIRCUIT PARAMETERS
Ⅵ. CONCLUSIONS
ACKNOWLEDGMENT
REFERENCES
참고문헌 (22)
참고문헌 신청
W. A. van Schalkwijk / 2002 / Advances in Lithium-Ion Batteries / Kluwer Academic Publishers
M. Broussely / 2007 / Industrial applications of batteries
V. Pop / 2008 / Battery Management Systems: Accurate State-of-Charge Indication for Battery-Powered Applications / Philips Research book Series 9
B. S. Bhangu / 2005 / Nonlinear observers for predicting state-of-charge and state-of health of lead-acid battery for hybrid-electric vehicle / IEEE Trans. Veh. Technol 54(3):783~794
J. Lee / 2007 / Li-ion battery SOC estimation method based on the reduced order extended kalman filtering / Journal of Power Sources 174(1):9~15
M. Broussely / 2007 / Industrial applications of batteries
V. Pop / 2008 / Battery Management Systems: Accurate State-of-Charge Indication for Battery-Powered Applications / Philips Research book Series 9
B. S. Bhangu / 2005 / Nonlinear observers for predicting state-of-charge and state-of health of lead-acid battery for hybrid-electric vehicle / IEEE Trans. Veh. Technol 54(3):783~794
J. Lee / 2007 / Li-ion battery SOC estimation method based on the reduced order extended kalman filtering / Journal of Power Sources 174(1):9~15
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