大功率铅酸动力电池带负脉冲充电系统设计

摘要

根据铅酸动力电池本身特性,分析了在充电过程中带负脉冲放电能够提高电池对于充电电流的接受率；设计了大功率铅酸动力电池带负脉冲放电的脉冲变电流快速充电系统,给出了系统的硬件框图,以及主电路图.使用该系统对48V100Ah电动车辆用铅酸动力电池进行充电实验,得到了系统主电路效率曲线、带负脉冲充电电流曲线以及充电容量曲线.由实验证实,该系统所采用的带负脉冲放电的脉冲变电流充电方法使得充入电池同样容量的充电时间缩短,且该充电系统在高频下满载效率为92.7％,功率在1 600W时达到系统最高效率点93.2％,经连续运行无任何问题.%Based on lead-acid motive battery characteristics the effectiveness of the negative pulse are analyzed, and the negative pulse can improve the acceptance rate for the charge current in the battery charging process was explained. The high-power lead-acid battery rapid charging system with the negative pulse discharge current is designed , the hardware block diagram of the system is given, and the main circuit topologyt are given. Using the system for 48VI00Ah lead-acid battery charging test, the main circuit efficiency curve of the system, the charge current curve with the negative pulse, and the charge capacity curve are obtained. That is confirmed by the experiments, the variable current charge method with the negative pulse in the system makes the charging time become shorten in the same charge capacity. The charging efficiency of the system is 92. 7% under full load, the maximum efficiency of the system reached 93. 2% in 1 600 W power, there is not any problems in the continuous operation progress.