Improved single particle model based state of charge and capacity monitoring of lithium-ion batteries

Rui Xiong, Linlin Li, Quanqing Yu

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

9 Citations (Scopus)

Abstract

State of charge and state of health monitoring of lithium-ion batteries is a hot topic in the area of battery management. Although much work has been done for state estimation based on equivalent circuit model, more research is needed to monitor battery state using electrochemical model which can reflect chemical reactions inside the battery. In this paper, an online state of charge and capacity estimation strategy is proposed based on improved single particle model using extended Kalman filter. Firstly, an improved single particle model which incorporates Li-ion concentration distribution in electrolyte phase is established. Then two extended Kalman filters with different time scales based on the model are used to estimate state of charge and capacity. Finally, the ability of the method to against erroneous initial values is evaluated, and the experimental results show the feasibility of the proposed approach.

Original languageEnglish
Title of host publication2019 IEEE 89th Vehicular Technology Conference, VTC Spring 2019 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728112176
DOIs
Publication statusPublished - Apr 2019
Event89th IEEE Vehicular Technology Conference, VTC Spring 2019 - Kuala Lumpur, Malaysia
Duration: 28 Apr 20191 May 2019

Publication series

NameIEEE Vehicular Technology Conference
Volume2019-April
ISSN (Print)1550-2252

Conference

Conference89th IEEE Vehicular Technology Conference, VTC Spring 2019
Country/TerritoryMalaysia
CityKuala Lumpur
Period28/04/191/05/19

Keywords

  • Extended Kalman filter
  • Improved single particle model
  • Lithium-ion battery
  • State of charge
  • State of health

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