摘要
用电感、二极管和开关器件构成串联蓄电池充电的均衡电路,使蓄电池在串联的情况下,实现均衡充电.分析了均衡器的工作原理,指出该均衡器具有动态分配过充电能的特点.利用蓄电池的充电电压和充电状态之间的关系,用蓄电池的状态估计法和倒推法,解决了均衡器中开关器件的PWM脉冲占空比的计算问题.整个串联蓄电池充电系统具有结构简单、灵活和可扩展的优点.
The proposed charge equalizing circuit (CEC), which consists of inductor, diode and switching device, performs an equally-charging characteristic for seriesly connected batteries. The operational principle of CEC, which can redistribute excess charging energy, has been analyzed in the paper. Taking advantage of the relationship between the state of charges and the voltage of batteries, the duty ratio of switching device in the CEC can be calculated by using measured voltage of battery. The whole system of CEC achieves simple structure, flexibility and extendibility.
出处
《南京师范大学学报(工程技术版)》
CAS
2006年第1期12-16,共5页
Journal of Nanjing Normal University(Engineering and Technology Edition)
关键词
蓄电池
充电器
均衡电路
单片机
battery, charging device, equalizer, micro controller