Sinusoidal-ripple-current charging strategy and optimal charging frequency study for Li-ion batteries

Liang Rui Chen, Shing Lih Wu, Deng Tswen Shieh, Tsair Rong Chen

Research output: Contribution to journalArticlepeer-review

156 Citations (Scopus)


In this paper, the sinusoidal-ripple-current (SRC) charging strategy for a Li-ion battery is proposed. The ac-impedance analysis is used to explore the optimal charging frequency. Experiments indicate that the optimal charging performance can be achieved by the proposed SRC with the minimum-ac-impedance frequency fZ\min. Compared with the conventional constant-current constant-voltage charging strategy, the charging time, the charging efficiency, the maximum rising temperature, and the lifetime of the Li-ion battery are improved by about 17%, 1.9%, 45.8%, and 16.1%, respectively.

Original languageEnglish
Article number6140959
Pages (from-to)88-97
Number of pages10
JournalIEEE Transactions on Industrial Electronics
Issue number1
Publication statusPublished - 2013 Jan 1

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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