锂离子电池荷电贮存性能的研究

将锂离子电池在不同荷电状态(SOC)下贮存,对贮存前后的电池性能进行了测试;对在不同SOC下贮存对电池性能的影响进行了研究,结果发现:电池进行长期贮存时,电池电压在3.80 V左右,电池的综合性能最好;当电池电压超过3.90 V时,对电池的容量、内阻、平台和循环寿命都会产生不利影响;而电池在完全放电态或过低SOC下贮存,电池的循环性能略有下降,电池不能立即使用,且容易出现过放电.

Study on the charge storage performance of Li-ion battery

The storage of the Li-ion battery in different state of charge(SOC),the performance of Li-ion battery before and after storage was tested.The effects of storage in different SOC on the performance of battery were studied.The results showed that the general performance of the battery would reach the best when the voltage of the battery was about 3.80 V with the perennial storing.If the voltage of the battery exceeded 3.90 V,it would bring the unfavorable effects on the capacity,internal resistance,plateau and cycle life of the battery.When the battery was stored in 0% SOC or low SOC,the cycle performance of the battery would reduce slightly,the battery could not be used at once,moreover,the over-discharge would occur easily.