18650型锂离子电池的安全性能研究  

The safety research of the 18650 type Li-ion batteries

作　　者：胡杨[1] 李艳[1] 钟盛文[2] 李培植[2] 王茹英 刘庆国[1] 

机构地区：[1]北京科技大学固体电解质研究室,北京100083 [2]江西理工大学材料科学与工程系,江西赣州341000 [3]石家庄光宇公司,河北石家庄050031

出　　处：《电池》2006年第3期192-194,共3页Battery Bimonthly

摘　　要：用质量比为5：5和7：3的锰酸锂和包覆镍酸锂混合的复合材料作为正极,球形石墨作为负极,制成18650型锂离子电池并进行了安全性测试.结果表明：在热箱实验中,复合材料组装的电池可以耐145～150℃的高温,且在3 C、10 V和5C、10 V过充电条件下安全可靠.随着复合材料中锰酸锂比例的增加,电池的安全性提高.在电池内装置正温度系数端子（PTC）,可提高电池的耐过充性和短路安全性.The 18650 type Li-ion batteries, using composite cathode of LiMn204 and eoated-LiNiO2 with the mass ratio of 5：5 and 7：3, with graphite as anode electrode were assembled, safety tests were carried out. The restdts showed that in the thermal box test, the batteries with composite material were safe at 145 ～ 150 ℃, as well as in the overcharge tests with 3 C, 10 V and 5 C,10 V. With the increasing of the content of LiMn2O4, the safety performance of the battery improved. Fitting a positive temperature coefficient part （PTC） was very useful to improve the overcharge performance and short circuit safety performance.

关 键 词：锂离子电池 复合正极材料 安全性能 

分 类 号：TM912.9[电气工程—电力电子与电力传动]