Implementation of a Pulse-Reverse Battery Charger with Energy Feedback

• Main Authors: Wen Ta, 文達
• Other Authors: Tsorng-Juu Liang
• Format: Others
• Language: zh-TW
• Published: 2001
• Online Access: http://ndltd.ncl.edu.tw/handle/86986141171448308076

碩士 === 國立成功大學 === 電機工程學系 === 89 === This paper presents a battery charger using the ReflexTM method. The ReflexTM method provides a negative pulse current which can relax the reaction of electrolyte and extend the life of batteries. However, the ReflexTM method generally uses a current limiting resistor, which causes the energy losses and makes the charger bulky. To avoid this problem, this paper presents a novel charger circuit topology with energy feedback technique. This circuit topology is composed of two stage converters, which the first stage is a half-bridge converter providing a voltage source and the second stage is a bi-directional buck-boost converter controlling the charge and discharge of batteries. During the positive pulse charge mode, the buck converter provides the energy to the battery. During the negative pulse discharge mode, the boost converter releases the battery energy and stores temporarily the energy of negative pulse in a capacitor, avoiding the consumption of energy. And the VB-based monitor system is used to record the data of charge and discharge.