Abstract
As industrial development promotes the world wide economic growth, environmental pollutions have never been absent in the booming industrial countries. Among the various pollution problems, the global warming due to the greenhouse effect will badly endanger our ecological environment. Carbon dioxide emission is the major cause of the greenhouse effect; and they usually come from the exhaust pipe of internal combustion engines. Acting as the energy resources, secondary battery has been assume to have no pollution, and can be used to replace the oil or natural gas applications. Now, it has been applied to the power sources of notebook computers, personal digital assistant, digital camera, and other portable devices.The objective of this thesis is to explore possible methods for uniformly and rapidly charging secondary LiON batteries via proper experimentation procedures. First, LiON batteries were tested by standard battery formation equipment to understand the fundamental behaviors of the charging and discharging process. Then, a multi-stage constant current along with appropriate time scheduling algorithm has been developed to confirm the minimum time requirement. For experimental verifications, a charging hardware circuit has been built to verify the effectiveness of the algorithm. The experimental results have shown this study could be applied on the charging systems for battery packs in serial connection that need fast and reliable charging solutions.