| Summary: | 碩士 === 中原大學 === 電機工程研究所 === 102 === This thesis studies a charging strategy using phase-shifted full-bridge converter based battery management system (BMS). Battery charging method adopts a constant current and constant voltage charging mode (CC-CV). The battery management system can always monitor the state of charge of the battery immediately, and adjust the phase shift of the gate signal of the converter to maintain a constant output current in the CC mode, and to keep the output voltage constant in CV mode, while the converter can be kept at zero voltage switch (ZVS) to achieve the best efficiency. In this study, a controller UC3875 is employed for the full-bridge phase-shift converter to make gate switching at zero voltage and realize charging mode control. Finally, a 1 kW phase full-bridge converter is implemented to verify the proposed charging strategy; when a set of 48V lead-acid battery with a constant current of 15A charging, the best efficiency can reach 88%.
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