Real-time OCV and Capacity Estimation Algorithm for Reusable Lithium-ion Battery without Pre-experiment

Jong Hun Lim, Je Yeong Lim, Hyeon Ho Lee, Eui Seong Han, Dong Hwan Kim, Byoung Kuk Lee

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

Abstract

This paper proposes real-time open circuit voltage (OCV) and capacity estimation algorithm without the initial state of the battery. The proposed algorithm estimates components of the equivalent circuit model (ECM) through the sum of square regression and obtains real-time OCV curve using the ECM voltage relationship and Coulomb counting method. The feasibility of the proposed algorithm has been demonstrated by simulation based on a lithium nickel manganese cobalt battery. Verification results show high accuracy of the OCV curve as the cycle repetition even though internal parameters of the battery are not provided.

Original languageEnglish
Title of host publicationICPE 2023-ECCE Asia - 11th International Conference on Power Electronics - ECCE Asia
Subtitle of host publicationGreen World with Power Electronics
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1579-1584
Number of pages6
ISBN (Electronic)9788957083505
DOIs
StatePublished - 2023
Externally publishedYes
Event11th International Conference on Power Electronics - ECCE Asia, ICPE 2023-ECCE Asia - Jeju, Korea, Republic of
Duration: 22 May 202325 May 2023

Publication series

NameICPE 2023-ECCE Asia - 11th International Conference on Power Electronics - ECCE Asia: Green World with Power Electronics

Conference

Conference11th International Conference on Power Electronics - ECCE Asia, ICPE 2023-ECCE Asia
Country/TerritoryKorea, Republic of
CityJeju
Period22/05/2325/05/23

Keywords

  • Lithium-ion battery
  • open circuit voltage
  • reusable battery
  • state of charge

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