Investigation of Battery Chargers

• Main Author: 查姵瑩
• Other Authors: Jin-Jia Chen
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/29883860972178181410

碩士 === 國立彰化師範大學 === 電機工程學系 === 96 === Abstract Since the secondary battery has the advantages of small size, light weight, high energy density, economy, security, and environmental protection, it becomes the best choice for power supply in 3C (Computer, Communication, Consumer Electronics) products. However, recently, accident incidences concerning battery product burning or harmful explosion are frequently reported in news or magazines. These accidents may come from the users’ mistake habit, poor battery quality, or inappropriate charger-circuit design. Therefore, the main purpose of this thesis is to study the nickel cadmium (NiCd) battery charger and to improve the safety during charging. This is accomplished by adding extra components to the charger circuit to protect from overcharging. Those components in various circuit configurations such as resistors, current fuses and thermal fuses are studied, and their performance are evaluated. The results can be referred by the industry to research and develop relevant battery chargers in the future. Keywords: Secondary battery, nickel-cadmium battery, charger.