To study the charging characteristics of lithium iron phosphate (LiFeP04) power batteries for e-lectric vehicles, a charging experiment is conducted on a 200A · h/3. 2V LiFeP04 battery, and the effects of charging current, the depth of discharge and charge cut-off voltage on charging characteristics of power batteries are analyzed. On this basis, a charging scheme for power batteries is proposed. The results of tests indicate that the scheme proposed can not only charge the power batteries relatively fast, but also reduce the risk of battery damage, and hence extend their cycle life.%为研究车载磷酸铁锂动力电池的充电特性,对200A·h/3.2V磷酸铁锂电池进行充电实验,分析充电电流、放电深度和充电截止电压对动力电池充电特性的影响.据此,提出了一种动力电池的充电方法.试验结果表明该方法既可对动力电池进行比较快速的充电,又可减小动力电池损坏的危险,从而延长其循环寿命.
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