Design and implementation of Li-ion battery charger using state-of-charge estimation with fuzzy temperature control

Yu Shan Cheng, Chung Ming Young, Yi Hua Liu, Guan Jhu Chen, Zong Zhen Yang

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

13 Scopus citations

Abstract

In this paper, a novel lithium-ion (Li-ion) battery charger is proposed; the proposed charger first takes the state of charge (SOC) information into account and adjusts the charging current accordingly. In order to further improve the charging efficiency, a fuzzy-logic-control-based (FLC-based) technique is also employed. The proposed FLC takes the temperature rise and the gradient of temperature rise of battery into account, and fine-tune the charging current accordingly. In this paper, the power stage is implemented using the synchronous-rectified buck converter. The digital compensator, digital filter and the SOC adaptive algorithm is implemented using the dsPIC digital signal controller from Microchip Corp; while the fuzzy logic controller is realized using the LabVIEW on a personal computer. In addition to the hardware, a graphical user interface is also presented. According to the experimental results, the charging efficiency of the proposed system can be increased and the performance of the proposed charger can be improved. Comparing to conventional constant-current constant-voltage (CC-CV) method, the proposed charging technique can reduce the average temperature rise for 23.2% while maintaining similar charging time.

Original languageEnglish
Title of host publication2015 IEEE International Conference on Industrial Technology, ICIT 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2075-2079
Number of pages5
EditionJune
ISBN (Electronic)9781479978007
DOIs
StatePublished - 16 06 2015
Externally publishedYes
Event2015 IEEE International Conference on Industrial Technology, ICIT 2015 - Seville, Spain
Duration: 17 03 201519 03 2015

Publication series

NameProceedings of the IEEE International Conference on Industrial Technology
NumberJune
Volume2015-June

Conference

Conference2015 IEEE International Conference on Industrial Technology, ICIT 2015
Country/TerritorySpain
CitySeville
Period17/03/1519/03/15

Bibliographical note

Publisher Copyright:
© 2015 IEEE.

Keywords

  • fuzzy logic control
  • lithium ion battery charger
  • state of charge

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