Journal of the Korea Institute of Military Science and Technology (한국군사과학기술학회지)

The Korea Institute of Military Science and Technology (한국군사과학기술학회)
권호 표지
DOI QR코드

DOI QR Code

Absolute Capacity Estimation Method with Temperature Effect for a Small Lithium-polymer Battery

온도의 영향성을 고려한 리튬폴리머 전지의 절대용량 추정 방법

  • Kim, Hankyong (The 5th Research and Development Institute, Agency for Defense Development) ;
  • Kwak, Kiho (The 5th Research and Development Institute, Agency for Defense Development)
  • 김한경 (국방과학연구소 제5기술연구본부) ;
  • 곽기호 (국방과학연구소 제5기술연구본부)
  • Received : 2015.08.04
  • Accepted : 2016.01.15
  • Published : 2016.02.05
Download PDF
⟨ Previous Next ⟩

Abstract

Military devices and systems powered by batteries need to operate at extreme temperature and estimate the available capacity of the battery at different temperature conditions. However, accurate estimation of battery capacity is challenging due to the temperature-sensitive nature of electrochemical energy storage. In this paper, Peukert's equation with temperature factor is derived, and methods for estimating the absolute capacity of lithium-polymer battery and the state-of-charge(SOC) with respect to varying currents and temperatures are presented. The proposed estimation method is experimentally verified under three different discharge currents(0.5 A, 1 A, 3 A) and six different temperatures ranging from -30 to 45 deg. C. The results show the proposed method reduces the Peukert's estimation error by up to 30 % under or at extreme condition.

Keywords

References

  1. W. Gu, C. Wang, "Thermal-Electrochemical Modeling of Battery Systems," Journal of Electrochemical Society, 147, pp. 2910-2922, 2000. https://doi.org/10.1149/1.1393625
  2. L. Song, J. W. Evans, "Electrochemical-Thermal Model of Lithium Polymer Batteries," Journal of Electro-chemical Society, 147, pp. 2086-2095, 2000. https://doi.org/10.1149/1.1393490
  3. B. Balasingam, et. al., "Performance Analysis Results of a Battery Fuel Guage Algorithm at Multiple Temperatures," Journal of Power Sources, 273, pp. 742-753, 2015. https://doi.org/10.1016/j.jpowsour.2014.09.063
  4. B. Pattipati, et. al., "Open Circuit Voltage Characterization of Lithium-ion Batteries," Journal of Power Sources, 269, pp. 317-333, 2014. https://doi.org/10.1016/j.jpowsour.2014.06.152
  5. D. Doerffel, S. A. Sharkh, "A Critical Review of using the Peukert Equation for Determining the Remaining Capacity of Lead-acid and Lithium-ion Batteries," Journal of Power Sources, 155, pp. 395-400, 2006. https://doi.org/10.1016/j.jpowsour.2005.04.030
  6. A. Hausmann, C. Depcik, "Expanding the Peukert Equation for Battery Capacity Modeling Through Inclusion of a Temperature Depedency," Journal of Power Sources, 235, pp. 148-158, 2013. https://doi.org/10.1016/j.jpowsour.2013.01.174