蓄电池初始充电电流策略及模糊逻辑控制

Initial charging current strategy and mass theory control

研究了分段式充电模式中电流衰减指数与蓄电池初始充电电流的关系,结构表明:对于可充电电池,其每一次充电的电流衰减指数由电池的初始荷电状态和采用的初始充电电流决定。对于相同的初始电解液比重(或荷电状态),采用一个最佳充电电流可得到最大电流衰减指数,即达到充电时间最短。并采用模糊逻辑控制方式,对充电系统进行了仿真研究,研究结果表明采用模糊逻辑控制方式对蓄电池这种非线性、时变系统有很好的控制性能,即可以很好的解决"选择最佳充电电流以保证安全快速充电"的问题。

Decay coefficient of current plays an important role for battery rapid charging. The decay coefficient of current and initial charging current of single lead-acid battery using the partition charge pattern was studied. The results show that decay coefficient of current keeps constant between to and t~. The maximum decay coefficient of current could be achieved when the relationship of initial current and electrolyte specific gravity arrived at an optimal value. The simulation charging system was studied by fuzzy control method and the best charging current could be obtained to ensure the safe and fast charging.