Performance degradation prediction and cell balance control algorithm construction of lithium iron phosphate battery

Yasuhiro Ueeda, Koichiro Taniguchi, Shoichi Inami, Genki Kaneko, Toshio Hirota, Wei hsiang Yang, Yushi Kamiya, Yasuhiro Daisho

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Various studies were conducted from the aspects of both the battery cells and the module with the aim of making more effective use of the battery capacity. As a result, after 77 cycles of driving and rapid charging, the capacity degradation of the battery module as a whole was 7.7 % and it was determined that the cause of this additional 0.7 % degradation of the capacity was the loss of cell balance. In addition, by adopting module balance coefficient (945;) that was proposed as an indicator to show the available percentage of the lowest capacity cell in the module, new cell balancing rules were created that do not significantly affect the convenience of vehicle operation.

Original languageEnglish
Title of host publication2014 IEEE Vehicle Power and Propulsion Conference, VPPC 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9781479967834
DOIs
Publication statusPublished - 2015 Jan 12
Event2014 IEEE Vehicle Power and Propulsion Conference, VPPC 2014 - Coimbra, Portugal
Duration: 2014 Oct 272014 Oct 30

Other

Other2014 IEEE Vehicle Power and Propulsion Conference, VPPC 2014
CountryPortugal
CityCoimbra
Period14/10/2714/10/30

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Keywords

  • BEV (battery electric vehicle)
  • Cell balance algorithm
  • Lithium battery

ASJC Scopus subject areas

  • Automotive Engineering
  • Mechanical Engineering

Cite this

Ueeda, Y., Taniguchi, K., Inami, S., Kaneko, G., Hirota, T., Yang, W. H., Kamiya, Y., & Daisho, Y. (2015). Performance degradation prediction and cell balance control algorithm construction of lithium iron phosphate battery. In 2014 IEEE Vehicle Power and Propulsion Conference, VPPC 2014 [7007118] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/VPPC.2014.7007118