A Li-ion battery charger with smooth control circuit and built-in resistance compensator for achieving stable and fast charging

Chia Hsiang Lin*, Chun Yu Hsieh, Ke-Horng Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

90 Scopus citations

Abstract

A built-in resistance compensator (BRC) technique is presented to speed up the charging time of a lithium-ion battery. A smooth control circuit (SCC) is proposed to ensure the stable transition from the constant-current (CC) to the constant-voltage (CV) stage. Due to the external parasitic resistance of the Li-ion battery-pack system, the charger circuit switches from the CC to the CV stage without fully charging the cell. The BRC technique dynamically estimates the external resistance to extend the CC stage. The experimental results show that the period of the CC stage can be extended to 40% of that of the original design. The charging time is effectively reduced.

Original languageEnglish
Article number5062557
Pages (from-to)506-517
Number of pages12
JournalIEEE Transactions on Circuits and Systems I: Regular Papers
Volume57
Issue number2
DOIs
StatePublished - 23 Feb 2010

Keywords

  • Built-in resistance compensator (BRC)
  • Charger
  • Fast charging
  • Li-ion cell
  • Smooth control circuit (SCC)

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