Identifying Degradation Indicators for Electric Vehicle Battery Based on Field Testing Data

Kei Long Wong, Ka Seng Chou, Davide Aguiari, Rita Tse, Su Kit Tang, Giovanni Pau

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

Abstract

State of health estimation of battery is crucial to ensure the safety and durability of electric vehicles. This paper presents six methods to extract the battery health indicator from electric vehicle field testing data. The methods for extracting health indicators from the discharge cycle show the ability to cope with the variable driving condition. In total, 157 health indicators are extracted from the collected data. Pearson correlation coefficient and Spearman's rank correlation coefficient are used to measure the correlation between the health indicators and the state of health. The results suggest that health indicators extracted by the presented methods have high correlations to the battery state of health.

Original languageEnglish
Title of host publication2022 IEEE Electrical Power and Energy Conference, EPEC 2022
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages206-211
Number of pages6
ISBN (Electronic)9781665463188
DOIs
Publication statusPublished - 2022
Event2022 IEEE Electrical Power and Energy Conference, EPEC 2022 - Virtual, Online, Canada
Duration: 5 Dec 20227 Dec 2022

Publication series

Name2022 IEEE Electrical Power and Energy Conference, EPEC 2022

Conference

Conference2022 IEEE Electrical Power and Energy Conference, EPEC 2022
Country/TerritoryCanada
CityVirtual, Online
Period5/12/227/12/22

Keywords

  • battery degradation
  • correlation analysis
  • electric vehicle
  • field testing data
  • lithium-ion battery
  • state of health

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