Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)

The Korean Institute of Power Electronics (전력전자학회)
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Charge Equalization Converter with Parallel Primary Winding for Series Connected Lithium-Ion Battery strings

트랜스포머 1차측 병렬 구조를 가진 직렬 연결 리튬이온 배터리 전하 균일 컨버터

  • Kim, Chol-Ho (Dept. of EECS, Korea Advanced Institute of Science and Technology) ;
  • Park, Hong-Sun (Dept. of EECS, Korea Advanced Institute of Science and Technology) ;
  • Kim, Chong-Eun (Dept. of EECS, Korea Advanced Institute of Science and Technology) ;
  • Moon, Gun-Woo (Dept. of EECS, Korea Advanced Institute of Science and Technology) ;
  • Lee, Joong-Hui (Corporate R&D Center, SK Corporation)
  • 김철호 (한국과학기술원 전자전산학과) ;
  • 박홍선 (한국과학기술원 전자전산학과) ;
  • 김정은 (한국과학기술원 전자전산학과) ;
  • 문건우 (한국과학기술원 전자전산학과) ;
  • 이중휘 (SK 주식회사 대덕 연구소)
  • Published : 2007.07.02
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Abstract

A charge equalization converter with parallel-connected primary windings of transformers is proposed in digest. The proposed work effectively balance the voltage among Lithium-Ion battery cells despite each battery cell has low voltage gap compared with its SOC. The principle of the proposed work is that the equalizing energy from all battery strings moves to the lowest voltage battery through the isolated dc/dc converter controlled by the corresponding bi-directional switch. In this digest, a prototype of four Lithium-Ion battery cells is optimally designed and implemented, and experimental results show that the proposed method has excellent cell balancing performance.

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