Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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A Study on Battery SOC Estimation by Regenerative Braking in Electric Vehicles

전기자동차의 회생제동에 따른 배터리 SOC 추정방법에 대한 연구

  • Zheng, Chun-Hua (Department of Mechanical and Aerospace Engineering/SNU-IAMD, Seoul National University) ;
  • Park, Yeong-Il (School of Mechanical Design and Automation Engineering, Seoul National University of Science and Technology) ;
  • Lim, Won-Sik (Department of Automotive Engineering, Seoul National University of Science and Technology) ;
  • Cha, Suk-Won (Department of Mechanical and Aerospace Engineering, Seoul National University)
  • 정춘화 (서울대학교 기계항공공학부/정밀기계설계공동연구소) ;
  • 박영일 (서울과학기술대학교 기계설계자동화공학부) ;
  • 임원식 (서울과학기술대학교 자동차공학과) ;
  • 차석원 (서울대학교 기계항공공학부)
  • Received : 2011.03.14
  • Accepted : 2011.05.16
  • Published : 2012.01.01
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Abstract

In traditional vehicles, a great amount of energy is dissipated by braking. In electric vehicles (EVs), however, electric motors can be controlled to operate as generators to convert kinetic and potential energy of vehicles into electrical energy and store it in batteries. In this paper, the relationship between regenerative braking factor and battery final SOC is derived and the final SOC from the relationship is compared to that from simulation. Two types of braking algorithms are introduced and applied to an EV, and the final SOC derived from simulation is compared to that derived from the relationship.

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References

  1. M. Ehsani, Y. Gao and A Emadi, Modern Electric, Hybrid Electric and Fuel Cell Vehicles, 2nd Edn., CRC Press, UK, pp.115-120, 2010.
  2. C. Zheng, Y.-I. Park, W. S. Lim and S. W. Cha, "A Simulation Study for the Performance of Electric Vehicles," The 25th World Battery, Hybrid and Fuel Cell Electric Vehicle Symposium and Exhibition, 2010.
  3. C. Zheng, Y. Park, W. Lim and S. W. Cha, "A Simulation Study for the Performance of Electric Vehicles," The 25th World Battery, Hybrid and Fuel Cell Electric Vehicle Symposium & Exhibition, 2010.
  4. M. Ehsani, Y. Gao and A. Emadi, Modern Electric, Hybrid Electric, and Fuel Cell Vehicles, 2nd Edn., CRC Press, UK, pp.53-65, 2010.
  5. H. B. Jin, J. W. Huh, J. H. Shin and S. H. Hwang, "Development of Brake Control Algorithm for Hybrid Electric Vehicles to Improve Regenerative Braking Performance," Fall Conference Proceedings, KSAE, pp.2308-2313, 2007.

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