Cell Balance of Secondary Battery by Using The Majority FET

다수의 FET를 이용한 2차 전지의 셀 밸런스에 관한 연구

  • Lim, Geun-Wook (Dept of Electrical and Electronics Eng, Korea University of Technology and Education) ;
  • Cho, Hyun-Chan (Dept of Electrical and Electronics Eng, Korea University of Technology and Education) ;
  • Kim, Jong-Won (Dept of Electrical and Electronics Eng, Korea University of Technology and Education) ;
  • Kim, Kwang-Sun (Dept of Mechatronics Eng, Korea University of Technology and Education) ;
  • Lee, Jung-Su (Dept of Mechatronics Eng, Korea University of Technology and Education) ;
  • Yoo, Sang-Gil (NEXCON TECHNOLOGY Co., LTd.) ;
  • Kang, Hee-Sun (NEXCON TECHNOLOGY Co., LTd.)
  • 임근욱 (한국기술교육대학교 전자공학과) ;
  • 조현찬 (한국기술교육대학교 전자공학과) ;
  • 김종원 (한국기술교육대학교 전자공학과) ;
  • 김광선 (한국기술교육대학교 메카트로닉스공학과) ;
  • 이정수 (한국기술교육대학교 메카트로닉스공학과) ;
  • 유상길 (넥스콘테크놀로지(주)) ;
  • 강희선 (넥스콘테크놀로지(주))
  • Published : 2008.06.30

Abstract

In this paper, the cell balance of secondary battery using a large number of MOSFETs is discussed. We can balance the cells by controlling battery charging current with help of MOSFETs. If the cells are not balanced, we can not use the whole energy of the battery while charging and discharging, therefore, the energy efficiency is decreased. To increase the energy efficiency, we propose the MOSFET control algorithm which will perform cell balancing by controlling the charging current.

Keywords