一种低温动力电池交流充电加热控制策略

电动汽车动力电池充放电性能受其使用环境温度的影响,在低温环境下动力电池的电化学反应活性降低,低温交流充电控制策略不合理可能导致动力电池过充,不仅影响低温充电功能的稳定性,而且会影响动力电池的使用寿命,甚至会引发安全事故。因此合理的低温充电控制策略就显得尤为重要。文章以广汽新能源某纯电车型为例,通过对已有的动力电池低温交流充电控制策略的分析研究,提出一种新型的低温动力电池交流充电加热控制策略,并通过低温实车验证。

A Heating Control Strategy for Low-temperature Power Batter during AC Charge

The charging and discharging performance of electric vehicle power battery is affected by its operating temperature.In low temperature,the electrochemical reaction activity of the power battery decreases.An unreasonable low-temperature AC charge control strategy may cause the power battery overcharged,which not only affects the stability of the low-temperature charging function,but also affects the life of the power battery,and even leads to safety accidents.Therefore,a reasonable low-temperature charging control strategy is particularly important.In this paper,we take an electric vehicle of GAC NE as an example,by analyzing and researching of an existing low-temperature AC charging control strategy for power batteries,a new low-temperature AC charge heating control strategy for power batteries is proposed and verified in low-temperature.