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A Design of an Optimal Battery Pulse Charge System by Frequency-Varied Technique

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1 Author(s)
Liang-Rui Chen ; Dept. of Electr. Eng., Nat. Changhua Univ. of Educ.

In this paper, a variable frequency pulse charge system (VFPCS), that can detect and dynamically track the optimal charge frequency, is proposed to improve the battery-charge response. To assess the system performance, a prototype of the VFPCS for 600-mAh lithium-ion battery is designed and implemented. Compared with the standard constant-current and constant-voltage charge system, the charge speed of the proposed VFPCS is improved above 24%, while the proposed VFPCS is improved above 10% compared with the conventional fixed-frequency pulse charge system. The results indicate that the VFPCS can actually provide pulse with optimal frequency to charge the battery and the charge response is improved

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Industrial Electronics, IEEE Transactions on  (Volume:54 ,  Issue: 1 )