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A New Modularized Balancing Circuit for Series Connected Battery cells

  • Lee, Hyo-Jae (Department of Mechatronic Engineering, Pukyong National University Graduate School) ;
  • Jung, Young-Seok (Department of Mechanical Automotive Engineering, Pukyong national university)
  • Received : 2014.10.31
  • Accepted : 2014.12.03
  • Published : 2014.12.31

Abstract

The series connected battery cells are mainly used in high voltage battery pack application. However parameter inequality of each battery cell makes battery voltage imbalance problem. In this paper, a new balancing circuit utilizing converter scheme for the series connected battery cells is proposed. Proposed circuit offers easy control and fast equalization time. Moreover the circuit can be used in a practical application because it has high modularity and can operate during the charging/discharging cycle. To show its superiorness and effectiveness, the principle of proposed circuit is explained with computer simulation and experiment is carried out using lithium-ion battery.

Keywords

References

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