电动汽车退役电池储能应用潜力及成本分析

Second use potential of retired EV batteries in power system and associated cost analysis

动力电池梯次利用不仅可以有效降低电动汽车用户和电力系统储能的成本,还可帮助缓解大量动力电池退役所带来的电池回收和环境污染压力。虽然国内部分企业及科研机构已开始尝试退役动力电池梯次利用,但对其利用潜力规模及经济性的分析仍然非常有限。本文在参考国外相关研究的基础上,结合国内电动汽车市场环境及车型特点,评估了未来电动汽车退役电池在电力系统中的储能应用潜力并分析了应用经济性。研究发现在可预见的电动汽车销量增速下,未来退役动力电池应用于电力系统储能具有巨大潜力,且随着电池模组标准化及电芯故障率降低逐渐显现其成本优势。

Second use of retired EV batteries not only effectively reduces costs of EV users, but also provides an alternative energy storage for the power system and helps mitigate the negative environmental impacts of EV batteries. Although some organizations attempted EV battery second use via demonstrations, the real potential of retired EV batteries and associated economic analysis are still insufficient. This paper therefore estimates the energy storage potential of retired EV batteries in China and conducted cost analysis accordingly. The study shows the large potential of retired EV batteries can be realized through improved battery module standardization and its cost benefit will be realized gradually along with the growth of the market.