电动汽车用锂离子动力电池大功率快充方法研究

Research of high-power fast charging methods for lithium-ion power batteries in electric vehicles

在高低温环境下实现锂离子动力电池安全可靠的快充,已成为新能源汽车产业亟需解决的关键科学问题。该文通过对国内外文献的归纳整理,阐述了环境温度对锂电池充电的影响。基于锂离子动力电池的热管理系统,阐述了在高低温环境下锂离子动力电池的快速充电方法。结合当前主流大功率快速充电方法的优缺点,提出高低温环境下的大功率快充方法研究思路,为锂离子动力电池在全气候条件下的快速充电算法研究提供参考依据。

Safe and reliable fast charging of lithium-ion batteries at high or low temperatures has become a key scientific issue in new energy vehicle industry,which needs to be resolved urgently.This paper summarizes the worldwide literature and expounds the impact of ambient temperature on lithium battery charging.Based on the thermal management system of lithium-ion power batteries,the fast charging method of lithium battery under high temperature and low temperature environment is elaborated.Combining the advantages and disadvantages of current mainstream high-power fast charging methods,a research idea of high power fast charging method in high and low temperature environments is proposed,which provides a reference for the research of fast charging algorithms of lithium-ion power batteries in all climates.