退役锂离子动力电池储能系统风冷热管理仿真

Wind cooling heat management simulation of a retired lithium ion battery energy storage system

为研究退役动力电池储能再利用过程的热管理方法和运行方案,基于退役锂离子动力电池储能系统,设计了风冷热管理的方案和运行策略。建立了舱内退役电池簇的数学物理模型。仿真了不同风量下磷酸铁锂(LFP)电池簇和三元镍钴锰(NCM)电池簇的温度分布,对比分析了有无风冷热管理时电池簇的热行为。结果表明:风冷热管理能满足适宜退役动力电池正常工作时的温度范围;对于磷酸铁锂电池簇和镍钴锰电池簇,增加风冷系统后,簇内电池最大温差可由无风冷时的10 K降低至4 K左右,电池的最大温升由30 K降低至10 K左右。该研究可为退役动力电池储能系统的高效热管理提供借鉴。

A scheme and operational strategy of wind cooling thermal management are designed to investigate the thermal management method and operational scheme of the retired power battery energy storage and reuse process.This is based on a retired lithium-ion power battery energy storage system.The mathematical and physical model of the retired battery cluster in the cabin is established.The temperature distribution of the LFP battery and NCM battery clusters under different wind rates is simulated,and the thermal behavior of the battery cluster with and without wind cooling strategy is compared and analyzed.The results show that wind cooling thermal management can meet the temperature range suitable for the normal operation of retired power batteries.For LFP and NCM battery clusters,the maximum temperature difference of batteries in the cluster can be reduced from 10 K to 4 K under the condition of without air cooling and with air cooling respectively,and the maximum temperature rise of batteries can be reduced from 30 K to 10 K.This study can provide a reference for the efficient thermal management of retired power battery energy storage systems.