IEMEK Journal of Embedded Systems and Applications (대한임베디드공학회논문지)

Institute of Embedded Engineering of Korea (대한임베디드공학회)
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Analysis of Risk Priority Number and Functionally Safe Design of Battery Management System

BMS의 위험우선순위 분석과 기능안전을 고려한 설계

  • Received : 2021.02.15
  • Accepted : 2021.04.04
  • Published : 2021.04.30
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Abstract

In recent years, as ESS has become very popular, BMS related electric fires have occurring frequently. In this research we performed analysis of risk priority number (RPN) using Failure Mode and Effects Analysis (FMEA) technique to analyze the safety of BMS, which accounts for the most part in ESS electric fires. And the functional safety concept was used to eliminate or reduce failure modes that may cause overvoltage, overcurrent, and overheating for higher risk priorities of the analyzed BMS. The BMS hardware was redesigned so that the safety mechanism works for the high-priority risk modes, and the main firmware procedures were designed to control the battery against potential malfunctions. And we implemented the improved BMS hardware and experimentally verified that the safety mechanism works as designed. The test results have confirmed that the safety mechanism works normally and the battery can be controlled even if overvoltage, overcurrent and overheating occurs in the BMS, or major firmware procedures malfunction. Therefore we are confident that electric fires related to ESS can be prevented in advance by analyzing the safety of BMS in the way we used in this research to find high-priority risk factors and applying the concept of safety functions to the hardware and software design of BMS.

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Acknowledgement

본 연구는 한국산업기술진흥원이 지원하는 지역특화산업육성+(R&D)사업의 일환으로 수행되었습니다 (S2934696).

References

  1. Rui Xiong, Weisiang Shen, "Advanced Battery Management Technologies for Electric Vehicles," John Wiley & Sons, 2019.
  2. Reiner Korthauer, "Lithium-Ion Batteries: Basics and Applications," Springer, 2019.
  3. E.S. Kim, "Fire Risk Assessment based on Risk Priority Number for Components of ESS," doctoral dissertation, Chungbuk National University, 2020 (in Korean).
  4. B.W. Lee, "A study on the Analysis and Solution o ESS System Fire Cause," master's thesis, Hanyang University, 2020 (in Korean).
  5. H.J. Jang, T.S. Song, J.Y. Kim, S.J. Kim, T.H. Jang, "Study on Analysis of Fire Factor and Development Direction of Standard/safety Requirement to Keep Safety for Energy Storage System (ESS)," Journal of Standards, Certification and Safety, Vol. 9, No. 3, pp. 25-49, 2019 (in Korean). https://doi.org/10.34139/JSCS.2019.9.3.25
  6. https://www.kats.go.kr/content.do?cmsid=239&cid=21072&mode=view
  7. Jurgen Garche, Klaus Brandt, "Electrochemical Power Sources Fundamentals, Systems, and Applications Li-Battery Safety," Elsevier, 2018.
  8. D.H. Kim, S.C. Kim, J.S Park, E.J. Kim, E.S. Kim, "Analysis of Risk Priority Number for Grid-connected Energy Storage System," Journal of the Korean Society of Safety, Vol. 31, No. 2, pp. 10-17, 2016 (in Korean). https://doi.org/10.14346/JKOSOS.2016.31.2.10
  9. D.H. Kim, S.C. Kim, E.S. Kim, K.G. Nam, C.K Jeong "Safety Assessment for PCS of Photovoltaic and Energy Storage System Applying FTA," Journal of the Korean Society o Safety. Vol. 34, No. 1, pp. 13-20, 2019 (in Korean).
  10. Michael R. Beauregard, Raymond J. Mikulak, Robin E. McDermott, "The Basics of FMEA," Productivity Press, 2008.
  11. Kirby W. Beard, "Linden's Handbook of Batteries, Fifth Edition," McGraw-Hill, 2019.
  12. John Warner, "The Handbook of Lithium-Ion Battery Pack Design: Chemistry, Components, Types and Terminology," Elsevier Science, 2015.
  13. S.B. Kim, S.H. Lee, "Design and Development of Less than 1Kw Lithium Eechargeable Battery Pack," International Journal of Internet, Broadcasting and Communication Vol. 10 No. 3, pp. 104-108, 2018. https://doi.org/10.7236/IJIBC.2018.10.3.104
  14. H.H. Kim, N.H. Lee, "The Case Study on Software FMEA for the Efficient Improvement of Functional Safety," The Korean Society of Automative Engineers Conference & Exhibition, Vol. 2012 No. 11, pp. 1303-1308, 2012 (in Korean).