Electric vehicle power battery charging can reach 100％ full, which greatly affected the battery service life. A photovoltaic battery of electric vehicle charging device are studied in this paper. The device can for battery leader time trickle current charging, through part of battery energy, can make the battery as far as possible with 100％, increase the mileage, longer service life. Design of the maximum power point tracking control strategy can quickly realize the tracking of the maximum output power of photovoltaic cells, at the same time, improve the charging efficiency of the battery, small steady-state error of the system, strong practicability, and testing environment of MPPT algorithm tracking accuracy of the method provides effective reference.%电动汽车动力电池组的充电总不能达到100％充满,这大大影响了电池组的实用寿命.本文研究了一套电动汽车光伏电池的充电装置,该装置可以对动力电池组长时间涓流充电,通过部分补充电池组能量,可以使电池组尽可能100％充满,续航里程增加,使用寿命更长.设计中采用最大功率点跟踪控制策略,可快速实现光伏电池最大输出功率的跟踪,同时提高了电池的充电效率,系统稳态误差小,实用性强,同时为测试自然环境下MPPT算法跟踪精度的方法提供了有效借鉴.
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