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자료유형
학술대회자료
저자정보
Van-Tuan Doan (Soongsil University) Van-Binh Vu (Soongsil University) Hai-Nam Vu (Soongsil University) Duc-Hung Tran (Soongsil University) Woojin Choi (Soongsil University)
저널정보
전력전자학회 ICPE(ISPE)논문집 ICPE 2015-ECCE Asia
발행연도
2015.6
수록면
1,644 - 1,649 (6page)

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In the battery based applications, the performance of the system highly depends on the reliability of the battery. However, it is difficult to obtain the accurate information about the state-of-health (SOH) of battery during its operation. In this paper a 3kw battery charger with online battery diagnosis function which can estimate the SOH of the battery by using online impedance spectroscopy technique is introduced. For the charger, a phase shift full bridge converter with synchronous rectification has been adopted to implement constant current/constant voltage charge and diagnosis functions. The electrochemical impedance spectroscopy (EIS) is performed after the charge to obtain the information about the internal impedance of the battery module, hence the SOH can be estimated online by observing the impedance variation of the battery over time. All the design procedure of the proposed charger is detailed and the feasibility of the system is verified by the experimental results.

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Abstract
I. INTRODUCTION
II. OPERATION PRINCIPLE OF THE PROPOSED CHARGER
III. DESIGN AND CONTROL OF THE INTELLIGENT CHARGER
IV. BATTERY DIAGNOSIS WITH ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY TECHNIQUE
V. EXPERIMENTAL RESULTS
VI. CONCLUSION
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