温度对NCM锂离子动力电池特性的影响  

Effect of Temperature on Characteristics of NCM Lithium-ion Power Battery

作　　者：刘红涛 董红玉[2] LIU Hongtao DONG Hongyu(Xinxiang Battery Research Insitute Co. Ltd , Xinxiang 453000 , China Henan Normal Universi- ty , Xinxiang 453000 , China)

机构地区：[1]新乡电池研究院有限公司,河南新乡453000 [2]河南师范大学,河南新乡453000

出　　处：《河南化工》2017年第9期26-28,共3页Henan Chemical Industry

摘　　要：基于市场上成熟的镍钴锰(NCM)锂离子动力电池产品进行测试。随着温度的降低,电池内阻增大,电池放电容量减小。同时发现温度降低,电池极化内阻增大。但电池的欧姆内阻基本不随电池的剩余容量(SOC)变化而变化,极化内阻的变化趋势和等效内阻随SOC的变化趋势相同。随着温度的降低,电池的内阻增大,电池的循环寿命逐渐降低。Testing is based on the mature lithium - ion power battery with NCM cathode on the market. As the temperature decreases, the internal resisitance of the battery increases and the discharge capacity of battery decreases. As the same time, it found that the temperature decreases, polarization resistance of bat- tery increases. However, the ohmic resistance of the battery does not change with the SOC, and the change trend of the polarization resistance and equivalent resistance are the same as the change trend of SOC. As the temperature decreases, the internal resistance of battery increases , the cycle life of battery gradually decreases.

关 键 词：温度 等效内阻 极化内阻 循环寿命 

分 类 号：TM911[电气工程—电力电子与电力传动]