A Battery Power Bank with Series-Connected Buck–Boost-Type Battery Power Modules

Tsung-Hsi Wu, Chin-Sien Moo and Chih-Hao Hou
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Tsung-Hsi Wu: Department of Electrical Engineering, National Sun Yat-sen University, 70 Lienhai Rd., Kaohsiung 80424, Taiwan
Chin-Sien Moo: Department of Electrical Engineering, National Sun Yat-sen University, 70 Lienhai Rd., Kaohsiung 80424, Taiwan
Chih-Hao Hou: Realtek Semiconductor Corporation, 2 Innovation Rd. II, Hsinchu Science Park, Hsinchu 300, Taiwan

Energies, 2017, vol. 10, issue 5, 1-12

Abstract: The operation of a battery power bank with series-connected buck–boost-type battery power modules (BPMs) was investigated in this study. Each BPM consisted of a battery pack with an associated buck–boost converter for individually controlling battery currents. With a proposed discharging scenario, load voltage regulation with charge equalization among batteries was performed by controlling the battery currents in accordance with their state-of-charges (SOCs) estimated by real-time battery-loaded voltages detected under the same operating condition. In addition, the fault tolerance was executed to isolate exhausted or faulty batteries from the battery power bank without interrupting the system operation. Experiments were conducted to verify the effectiveness of the discharging scenario for a laboratory battery power bank with four series buck–boost BPMs.

Keywords: battery; battery power module (BPM); charge equalization; discharging scenario; fault tolerance; state-of-charge (SOC) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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