A Novel Soft-Switching Battery Charge/Discharge Converter With the Zero Voltage Discharge Function

作者：Yu Sunho^*; Manh Quang Nguyen^*; Choi Woojin^*

来源：IEEE Transactions on Power Electronics, 2016, 31(7): 5067-5078.

DOI：10.1109/TPEL.2015.2482758

• Bidirectional converter
• dc-dc converter
• zero current switching (ZCS)
• zero voltage switching (ZVS)

One important test for the formation and grading of a lithium-ion battery is to confirm the performance of the battery while discharging it down to zero volts. In this paper, a novel soft-switching charge/discharge converter with the zero voltage discharge function is proposed. The proposed converter is able to discharge a battery until its voltage reaches zero volts. The phase-shift full-bridge method is used to charge the battery and the current-fed push-pull method with bidirectional switches is used for the discharge. Zero voltage switching (ZVS) of the switches is achieved at turn-on during the charge operation. ZVS turn-on and zero current switching turn-off of the switches are achieved during the discharge operation. The charge/discharge controllers are designed taking into account the internal impedance of the battery. The performance of the system is verified by the experiments using lithium-ion batteries.

• 出版日期2016-7