退役锂离子动力电池梯次利用可行性研究

Feasibility study of secondary utilization of retired power lithium-ion battery

借助电池内阻测试仪、电池充放电测试仪、热成像仪等仪器研究退役电池电化学性能。研究结果表明,电动汽车退役锂离子动力电池可利用率达到60%,梯次利用价值巨大。电池性能测试结果显示:退役电池深循环寿命可达750次以上,高倍率放电及安全性能良好,但是低温放电性能稍差。

The performance of retired power lithium-ion batteries was investigated by battery internal resistance tester, charging/discharging tester and thermal image meter. Experimental results indicate that the utilization rate of retired power lithium-ion battery is more than 60%, and it has large secondary utilization value. The life of retired battery under deep cycle can reach 750 cycles, and it has high rate discharge performance and good safety. The discharge performance at low temperature is bad.