隔膜对18650型锂离子电池性能的影响  

Effects of separators on the performance of 18650 type Li-ion battery

作　　者：高洪森[1] 龚金保[1] 韩恩山[1] 高俊奎[2] 

机构地区：[1]河北工业大学化工学院,天津300130 [2]天津力神电池股份有限公司,天津300384

出　　处：《电池》2008年第3期166-168,共3页Battery Bimonthly

摘　　要：用4种隔膜制作了18650型锂离子电池,并测试了电池的安全性能(150℃热箱、冲击和过充实验)和电性能(倍率和循环性能)。隔膜的孔隙率大、熔融温度高,电池的150℃热箱安全性能坚持时间就短,而2C、12 V过充安全性能和倍率放电性能更好。孔隙率值合适(约45%)和孔径均匀的隔膜,能提高电池的循环性能。18650 type Li-ion batteries were prepared by four kinds of separators. The safety performance （150 ℃ hot oven, shock and overcharge tests） and the electrical performance （rate and cycle performance） of the batteries were tested. Separators with large porosity and high melt temperature resulted in short maintaining time for batteries of 150 ℃ hot oven safety performance,but the safety performance of 2 C, 12 V overcharge and rate discharge performance were better. Separators with suitable porosity value （about 45%） and uniformity pore size could improve the cycle performance of 18650 Li-ion batteries.

关 键 词：隔膜 18650型锂离子电池 安全性能 电性能 

分 类 号：TM912.9[电气工程—电力电子与电力传动]