Title: Development of current-controllable batteries charging system based on multi-stage mechanism

Authors: Hsiung-Cheng Lin; Chi-Wei Liu; Jhih-Siang Lin

Addresses: Department of Electronic Engineering, National Chin-Yi University of Technology, No. 57, Sec. 2, Zhongshan Rd., Taiping Dist., Taichung 41170, Taiwan ' Department of Electronic Engineering, National Chin-Yi University of Technology, No. 57, Sec. 2, Zhongshan Rd., Taiping Dist., Taichung 41170, Taiwan ' Department of Electronic Engineering, National Chin-Yi University of Technology, No. 57, Sec. 2, Zhongshan Rd., Taiping Dist., Taichung 41170, Taiwan

Abstract: Increasing demand for back-up electric power supply has enforced the development of efficient battery chargers in industry. However, the study of an effective charging management mechanism still needs a further improvement to overcome some limitations of traditional methods. For this reason, this paper proposes a current-controllable batteries charging system using multi-stage charge mechanism for achieving more effective performance. First, a high frequency two-transistor forward converter is designed to provide necessary DC power supply for both charger and control unit. For the charger, it is designed based on an ideal multi-state strategy and it can provide a desired/changeable constant charging current. Also, each battery is ensured at a balanced level by the proposed battery equilibrium circuit before the charging process. The experimental results confirm that the proposed charging system is superior in terms of flexibility, high efficiency and self-management capability.

Keywords: battery equilibrium; lead-acid batteries; current-controllable; self-management; charger.

DOI: 10.1504/IJES.2019.103988

International Journal of Embedded Systems, 2019 Vol.11 No.6, pp.719 - 730

Accepted: 23 Oct 2017
Published online: 03 Dec 2019 *

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