低温环境下锂电池充放电性能研究  

Research on Charging and Discharging Performance of Lithium Battery at Low Temperature

作　　者：施润泽 张嘉琪[1] SHI Run-ze;ZHANG Jia-qi(Tianjin University of Technology,environmental science,Tianjin,300384,China)

机构地区：[1]天津理工大学环境科学与安全工程学院,天津300384

出　　处：《电池工业》2021年第6期291-294,328,共5页Chinese Battery Industry

摘　　要：利用恒温箱提供实验所需温度环境,对锂离子电池进行不同温度环境下的充放电实验,通过实验所得数据进行分析得出结论:使用1C倍率对锂电池充电、放电,随着温度的降低,电压变化越快,充入、放出电量越少,开路电压变化越明显。在-12℃下,随着充电、放电倍率的减小,电压变化减缓,充电、放电所需时间增加,锂离子电池可充入、放出的电量增加。使用0.1C倍率可以充入1 209mAh电量,放出1 291mAh电量,在该温度下,电池使用小电流可以提升使用性能。Providing the required temperature environment by an incubator,and carrying out experiments in different temperature environments that includes the charging and discharging of lithium ion batteries.The following conclusions can be drawn by the experiments’ data:with the decreasing of temperature,when charging and discharging at 1 C,the changes of voltage is faster,the charge and discharge of electric quantity is lesser and the change of open-circuit voltage is more obvious.With the lessen of ratio of charging and discharging at-12℃,the change of voltage becomes slow down and the time of charging and discharging increases.The power that can be charged and discharged by lithium-ion battery increases.With a rate of 0.1 C,1 209 mAh can be charged and 1 291 mAh can be released.At this temperature,the battery can improve its performance by using a small current.

关 键 词：锂电池 充电 放电 充放电容量 

分 类 号：TM911[电气工程—电力电子与电力传动]