Lithium-ion Battery SOH Estimation and Fault Diagnosis with Missing Data

Ang Yang, Yu Wang, Kowk Leung Tsui, Yanyang Zi

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review

15 Citations (Scopus)

Abstract

State-of-health (SOH) is an important index indicating the batterys energy storage performance and health condition. However, the volume of SOH is highly dependent on the batterys initial capacity rather than the current capacity. Consequently, it is intractable to infer the SOH of batteries with missing data. In this paper, we propose a dynamic Peukerts law-based battery SOH estimation method. The dynamic Peukerts law correlates capacity loss with Peukerts coefficient, and eliminates the degradation inconsistency and is applicable for the same type of battery. Since the Peukerts coefficient can be calculated by multi-discharging test, the SOH is able to be estimated directly, and therefore, the limitation of data missing is overcome.
Original languageEnglish
Title of host publication2019 IEEE International Instrumentation and Measurement Technology Conference(I2MTC)
Volume2019-May
ISBN (Electronic)978-1-5386-3460-8
DOIs
Publication statusPublished - May 2019
Externally publishedYes
Event2019 IEEE International Instrumentation and Measurement Technology Conference, I2MTC 2019 - Auckland, New Zealand
Duration: 20 May 201923 May 2019
http://i2mtc2019.ieee-ims.org

Conference

Conference2019 IEEE International Instrumentation and Measurement Technology Conference, I2MTC 2019
PlaceNew Zealand
CityAuckland
Period20/05/1923/05/19
Internet address

Research Keywords

  • Degradation
  • Discharges (electric)
  • Estimation
  • Lithium-ion battery
  • Mathematical model
  • Mechanical engineering

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