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Charge equalization for series-connected batteries

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3 Author(s)
C. S. Moo ; Dept. of Electr. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan ; Y. C. Hsieh ; I. S. Tsai

A novel nondissipative charge equalization circuit is proposed for charge equalization control of series-connected batteries. Each battery associates with a subcircuit, which is essentially a buck-boost converter acting as a current diverter to redistribute the excessive energy from more affluent batteries to the hungry ones. By dynamically redistributing the charging current, charge equalization can be achieved more quickly and efficiently. The applicability of this approach is confirmed by experiments.

Published in:

IEEE Transactions on Aerospace and Electronic Systems  (Volume:39 ,  Issue: 2 )