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• Main Authors: Shi-Min,Yan, 顏士閔
• Other Authors: Tse-Liang,Yeh
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/fk4n6z

碩士 === 國立中央大學 === 光機電工程研究所 === 107 === The purpose of this thesis is to develop a 12V lead acid battery compatible Li-ion battery package so that multiple battery packs can be connected in series for charging or load driving like lead acid batteries. A MCU is applied to control the circuit switching as well as to estimate the charging status of the batteries. In the charging mode, a current bypass circuit in parallel to a Li-ion battery pack to maintain constant charging voltage drop across each battery pack in series to the charging power supply. Thus, battery packs at different charging states can all be charged to their individual capacity. When the packs in series is connected to a load burden, the circuit is switched to simple serial connection to drive the load. Switching between charging supply and load burden were tested with the voltage and current of each battery pack monitored and reported to verify their proper functionality.