Battery cell balancing by zero-current switching switched-capacitor resonant technique

Y. P.B. Yeung, W. F. Choi, Ka Wai Eric Cheng, C. Y. Lam

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Cell balancing is necessary for lithium-ion batteries and ultra-capacitors for high performance and reliability. A cell balancing technique implementing by bi-directional inverting zero-current switching switched-capacitor resonant converter is proposed in this paper. All transistors of the proposed circuit are switched under zero-current switching condition at any power level and voltage difference of the cells so that the EMI is low and the efficiency is high. There is no large magnetic device in the circuit. This technique can be applied on portable devices, industrial applications and electric vehicles. The operation principle of the proposed circuit is explained in the paper. The performance of the proposed cell balancing circuit has been verified.
Original languageEnglish
Title of host publicationEVS 2010 - Sustainable Mobility Revolution: 25th World Battery, Hybrid and Fuel Cell Electric Vehicle Symposium and Exhibition
PublisherElectric Drive Transportation Association
Publication statusPublished - 1 Jan 2010
Event25th World Battery, Hybrid and Fuel Cell Electric Vehicle Symposium and Exhibition: Sustainable Mobility Revolution, EVS 2010 - Shenzhen, China
Duration: 5 Nov 20109 Nov 2010

Conference

Conference25th World Battery, Hybrid and Fuel Cell Electric Vehicle Symposium and Exhibition: Sustainable Mobility Revolution, EVS 2010
CountryChina
CityShenzhen
Period5/11/109/11/10

Keywords

  • Cell balancing
  • Lithium battery
  • Ultra-capacitor
  • Voltage equalization
  • Zero-current switching

ASJC Scopus subject areas

  • Computer Networks and Communications

Cite this