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Volume 31 Issue 02
Feb.  2005
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Journal of Beijing University of Aeronautics and Astronautics  > 2005  >  31(02): 223-226.
Wu Hongjie, Qi Bojin, Zheng Minxin, et al. New definition method of state of charge for batteries in HEV[J]. Journal of Beijing University of Aeronautics and Astronautics, 2005, 31(02): 223-226. (in Chinese)
Citation: Wu Hongjie, Qi Bojin, Zheng Minxin, et al. New definition method of state of charge for batteries in HEV[J]. Journal of Beijing University of Aeronautics and Astronautics, 2005, 31(02): 223-226. (in Chinese)
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New definition method of state of charge for batteries in HEV

  • School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

  • Received Date: 20 Jun 2004
  • Publish Date: 28 Feb 2005
    Abstract
  • A new definition method to describe the state of the batteries in a hybrid-electric-vehicle (HEV) was proposed. The batteries in the question are MH/Ni batteries which have a normal capacity of about 8 A·h, and were used in a kind of HEV. The HEV application is a very harsh environment with high charge or discharge rates and very dynamic rate profiles. The normal definition method state of charge (SOC) that worked well in benign portable electronic applications may not work well in the HEV application. The normal definition of SOC cannot contain both the static and the dynamic message of the batteries in the only word. In the new definition method, the static state of charge (SSOC) and the dynamic state of charge (DSOC) were proposed. The SSOC indicates the static capacity message of the batteries; the DSOC indicates the dynamic state of charge while charging or discharging. The methods of how to calculate the SSOC and the DSOC were discussed.

     

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  • [1] Plett G. Extended Kalman filtering for battery management systems of LiPB-based HEV battery packs part 3 state and parameter estimation [J]. Power Sources, 2004,134 (2):277~292 [2] He X, Hodgson J W. Modeling and simulation for hybrid electric vehicles——part II:simulation [J]. IEEE Transactions on Intelligent Transportation System, 2002, (3):244~251 [3] 麻友良,陈全世,齐占宁．电动汽车用电池SOC定义与检测方法[J]．清华大学学报(自然科学版),2001,41(11):27~35 Ma Youliang, Chen Quanshi, Qi Zhanning. Research on the SOC definition and measurement method of batteries used in Evs[J]. Tsinghua University (Sciences & Technology), 2001,41 (11):27~35(in Chinese) [4] 胡明辉,秦大同.混合动力汽车电池管理系统SOC的评价[J].重庆大学学报,2003,26(4):20~23 Hu Minghui, Qin Datong. SOC definition of battery management system used in hybrid vehicles[J]. Journal of Chongqing University, 2003,26(4):20~23 (in Chinese) [5] 吴浩青,李永舫．电化学动力学[M]．北京:北京高等教育出版社,1998.67~69 Wu Haoqing, Li Yongfang. Electro-chemical kinetics [M]. Beijing:China Higher Education Press, 1998. 67~69(in Chinese)
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