Affiliation of Author(s):自动化学院
Journal:2017 IEEE TRANSPORTATION ELECTRIFICATION CONFERENCE AND EXPO, ASIA-PACIFIC (ITEC ASIA-PACIFIC)
Key Words:Lithium-ion batteries open circuit voltage (OCV) battery management system (BMS) relaxation time equivalent circuit model (ECM) incremental OCV test
Abstract:The open circuit voltage (OCV) of a battery cell is critical in many aspects of the battery management. However, the conventional OCV test methods are time consuming due to the need for a long relaxation period to approach the equilibrium state. In this paper, a rapid OCV test method is proposed to obtain the static OCV by employing two couples of current excitations, with parameters predetermined based on a second order equivalent circuit model (ECM). Due to the current excitations imposed after the SoC variation step, the polarization voltage shows faster convergence speed in comparison to the conventional self-rest method. Furthermore, the accuracy and the rapidity of the proposed method are verified through simulation and experiment results.
Translation or Not:no
Date of Publication:2017-01-01
Co-author:Yang, Jufeng,Xia, Bing,Mi, Chris
Correspondence Author:Mi, Chris,Huangwenxin
Date of Publication:2017-01-01
黄文新
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Education Level:南京航空航天大学
Paper Publications
Improved OCV Measurement Method with Reduced Relaxation Time
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