SOC estimation of lithium-ion battery packs based on thevenin model

Yuanqi Fang, Ximing Cheng*, Yilin Yin

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

15 Citations (Scopus)

Abstract

Due to the immeasurability of SOC in battery and inevitability of error in current collection, SOC estimation of Lithium-ion battery has become a focus of EV research. With Thevenin equivalent circuit model, this paper employs EKF algorithm to estimate SOC, which takes into consideration both precision requirement of the estimation and amount of computation involved in online estimation. Based on above-mentioned objectives and principles, a test platform composed of Digatron battery test system and thermostat was built. Experimental result has confirmed that the combination of EKF algorithm with Thevenin model can improve precision and reduce amount of computation. Copy; (2013) Trans Tech Publications, Switzerland.

Original languageEnglish
Title of host publicationMechanical Engineering, Industrial Electronics and Informatization
Pages211-215
Number of pages5
DOIs
Publication statusPublished - 2013
Event2012 International Conference on Mechanical Engineering, Industrial Electronics and Informatization, MEIEI 2012 - Qinhuangdao, Hebei, China
Duration: 28 Dec 201230 Dec 2012

Publication series

NameApplied Mechanics and Materials
Volume299
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Conference

Conference2012 International Conference on Mechanical Engineering, Industrial Electronics and Informatization, MEIEI 2012
Country/TerritoryChina
CityQinhuangdao, Hebei
Period28/12/1230/12/12

Keywords

  • EKF
  • Lithium-ion battery
  • SOC estimation
  • Thevenin model

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