锂电池全生命周期充电规划方法研究分析

Research and analysis of charging planning method for lithium battery life cycle

锂电池因具有自放电低、寿命长、清洁无污染等优点,成为目前研究的热点。因传统充电方法对锂电池全生命周期采用单一充电方案,造成锂电池充电效率低、寿命短、充电不安全等诸多问题。研究锂电池全生命周期充电方案,提出了锂电池全生命周期阶段划分及充电曲线规划的方法。根据实验数据得到电池SOC与循环次数的关系,以循环次数为依据,对锂电池全生命周期进行阶段划分。并结合充电接受率的影响因素,对不同阶段的锂电池进行合理的充电规划,从而提高锂电池的充电效率。

Lithium batteries have become the hotspot of current research because of their advantages of low self-discharge,long life,and no pollution.Due to the traditional charging method,a single charging scheme is adopted for the whole life cycle of the lithium battery,which causes many problems such as low charging efficiency,short life,and unsafe charging of the lithium battery.In this dissertation,the lithium battery life cycle charging scheme was researched,and the method of stage division and charging curve planning for lithium battery life cycle was proposed.According to the experimental data,the relationship between the SOC of the battery and the number of cycles was obtained.Based on the number of cycles,the whole life cycle of the lithium battery was divided into stages.Combined with the influencing factors of the charging acceptance rate,the reasonable charging planning for lithium batteries at different stages was carried out,thereby improving the charging efficiency of the lithium battery.