车载铅酸电池的五段式充电修复方法

Five segments charging repair method for vehicle lead-acid battery

在分析车载铅酸电池硫酸盐化机制的基础上,提出五段式充电修复方法。该方法将充电过程分为脉冲、恒流、恒压、活化和浮充等5个阶段,介绍充电脉冲宽度、时间间隔、放电时间、充电电流、恒压和活化充电电压等参数。搭建实验验证平台,对不同型号和使用年限的车载铅酸电池进行充电修复实验,测量充电修复前后的内阻、冷启动电流和使用寿命。该方法可将车载铅酸电池的内阻减小2%~33%,最大冷启动电流提高7~72 A,输出电压提高约0.8 V,使用寿命延长6~12个月。

The five segments charging repair method was put forward, based on the analysis of lead-acid starter batteries vulcanization mechanism. The method of charging accumulator was divided into five segments, which contained pulse, galvanostatic, potentiostatic,activation and floating charge. The parameters of the charging pulse width, time interval, discharge time, charging current, constant pressure and floating charge voltage were introduced. Through building a charging verification platform,the charging and repairing experiments of vehicle lead-acid battery with different types and years of service life were carried out. The internal resistance before and after charging repair, cold start current and service life were measured. The five segments charging repair method could reduce the 2% -33% internal resistance of vehicle lead-acid battery,the highest cold start current was increased by 7 -72 A and the output voltage was increased about 0. 8 V, then the service life was prolonged for 6 - 12 months.