전력전자학회논문지 (The Transactions of the Korean Institute of Power Electronics)

  • 제23권3호
  • /
  • Pages.174-181
  • /
  • 2018
  • /
  • 1229-2214(pISSN)
  • /
  • 2288-6281(eISSN)
전력전자학회 (The Korean Institute of Power Electronics)
권호 표지
DOI QR코드

DOI QR Code

Li4Ti5O12(LTO) 배터리 등가회로 모델링을 위한 내부 파라미터 체계적 해석

Systematic Approach of Internal Parameters for Equivalent Electrical-Circuit Modeling(EECM) of a Li4Ti5O12(LTO) cell

  • Lee, Pyeong-Yeon (Dept. of Electrical Engineering, Chungnam National University) ;
  • Yoon, Chang-O (Dept. of Electrical Engineering, Chungnam National University) ;
  • Park, Jin-Hyeong (Dept. of Electrical Engineering, Chungnam National University) ;
  • Kim, Jonghoon (Dept. of Electrical Engineering, Chungnam National University)
  • 투고 : 2016.09.11
  • 심사 : 2018.03.06
  • 발행 : 2018.06.20
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

This study introduces a systematic approach to selecting the internal parameters applied to the equivalent electrical-circuit model (EECM) of a lithium titanium oxide ($Li_4Ti_5O_{12}$; LTO) rechargeable cell. Based on the dynamic characteristic of the cell, a simplified EECM consisting of an open-circuit voltage (OCV), an ohmic resistance, and an RC ladder is fabricated. To select the internal parameters of a simplified EECM, experiments on discharge capacity, OCV, and discharge/charge resistances are performed using hybrid pulse power characterization and direct current internal resistance (DCIR) measurements over the full state-of-charge (SOC) range. The experimental results of the LTO rechargeable cell highlight the importance of correct selection of internal parameters that can reduce EECM errors. This study clearly provides experimental procedures, internal parameters results, and EECM guidelines for adaptive control-based SOC estimation for LTO rechargeable cells.

키워드

참고문헌

  1. H. G. Kim, S. I. Heo, and G. B. Kang, “Modeling and state observer design of HEV li-ion battery,” The Transactions of the Korean Institute of Power Electronics, Vol. 13, No. 5, pp. 360-368, Oct. 2008.
  2. S. Yang, J. Miao, Q. Wang, M. Lu, J. Sun, and T. Wen, "Synthesis of graphitized carbon, nanodiamond and graphene supported $Li_4Ti_5O_{12}$ and comparison of their electrochemical performance as anodes for lithium ion batteries," Applied Surface Science, Vol. 389, pp. 428-437, Dec. 2016. https://doi.org/10.1016/j.apsusc.2016.07.131
  3. N. Takami, H. Inagaki, Y. Tatebayashi, H. Saruwatari, K. Honda, and S. Egusa, "High-power and long-life lithium-ion batteries using lithium titanium oxide anode for automotive and stationary power applications," Journal of Power Sources, Vol. 244, pp. 469-475, Dec. 2013. https://doi.org/10.1016/j.jpowsour.2012.11.055
  4. S. Lee, J. Kim, J. Lee, and B. H. Cho, "State-of-charge and capacity estimation of lithium-ion battery using a new open-circuit voltage versus state-of-charge," Journal of Power Sources, Vol. 185, pp. 1367-1373, Dec. 2008. https://doi.org/10.1016/j.jpowsour.2008.08.103
  5. K. W. Jang and G. B. Chung, "A SOC estimation using kalman filter for lithium-polymer battery," The Transactions of the Korean Institute of Power Electronics, Vol 17, No. 3, pp. 222-229, Jun. 2012. https://doi.org/10.6113/TKPE.2012.17.3.222
  6. C. Y. Chun, J. H. Kim, I. N. Hur, B. H. Cho, and S. H. Han, "Circuit implementation for$ LiFePO_4$ battery SOC estimation based on the coulomb counting method," in Power Electronics Annual Conference, pp. 51-52, Nov. 2011.
  7. J. H. Kim, S. J. Lee, and B. H. Cho, "The state of charge estimation of aged batteries using per-unit system and time-constant," in Power Electronics Annual Conference, pp. 500-502, Jul. 2009.
  8. http://erik.re.kr/index.php?document_srl=13127&mid=res, Nov. 2017.
  9. J. H. Kim, S. J. Lee, J. M. Lee, and B. H. Cho, "A new direct current internal resistance and state of charge relationship for the Li-ion battery pulse power estimation," in IEEE 7th Internatonal Conference on Power Electronics, pp. 1173-1178, Oct. 2007.
  10. D. Noh, I. Hwang, and J. Yoo, "SOH estimation method of lithium polymer batteries using OCV," in Power Electronics Annual Conference, pp. 269-270, Jul. 2010.
  11. J. H. Park, P. Y. Lee, C. O. Yoon, J. H. Kim, and S. S. Jang, "Battery pack electric equivalent circuit model based parameter extraction and simulation verification," in Power Electronics Annual Conference, pp. 155-156, Nov. 2017.
  12. Q. F. Wang, M. W. Lu, J. Miao, and Y. Y. Hao, "Synthesis and electrochemical performance of nanodiamond supported $Li_4Ti_5O_{12}-Fe_2O_3$ composites as anode materials for lithium ion batteries," Materials Letters, Vol. 164, pp. 1-4, Feb. 2016. https://doi.org/10.1016/j.matlet.2015.10.100