超低温锂离子电池的研制  

Development of ultra low temperature Li-ion battery

作　　者：程广玉[1] 顾洪汇[1] 高蕾[1] 王可[1] CHENG Guang-yu GU Hong-hui GAO Lei WANG Ke(State Key Laboratory of Space Power Technology, Shanghai Institute of Space Power Sources, Shanghai 200245, Chin)

机构地区：[1]上海空间电源研究所空间电源技术国家重点实验室,上海200245

出　　处：《电池》2016年第5期255-258,共4页Battery Bimonthly

摘　　要：研制了兼具低温放电、高功率输出及高比能量等特点的额定容量为5 Ah的软包装锂离子电池。电池的比能量达183.5 Wh/kg,在-40℃的低温下,以5 C（25 A）在2.2~4.2 V放电,可放出额定容量的86.9%。常温20 C放电能放出额定容量的94.3%,平均比功率达3 027 W/kg。在80 C高功率脉冲放电2 s的实验中,2 s内平均比功率达9 164 W/kg。以1 C在2.75~4.20 V循环1 000次,容量保持率为88.3%。Soft-package ultra low temperature L-ion battery with nominal capacity of 5 Ah was developed, which exhibited such advantages as low temperature discharge, high power output and high specific energy. The specific energy of the battery reached to 183.5 Wh/kg. 86. 9% of the nominal capacity could be obtained at 5 C（25 A） discharge in 2. 2 -4. 2 V at low temperature -40℃. When discharged at 20 C at normal temperature, it could retained 94. 3% of the nominal capacity, the average specific power was 3 027 W/kg. In the 80 C 2 s high power pulse discharged test, the average specific power reached to 9 164 W/Kg. When cycled at 1 C in 2.75 -4. 20 V for 1 000 times, the capacity retention rate was 88. 3%.

关 键 词：超低温 高功率 高比能量 锂离子电池 无人机 

分 类 号：TM912[电气工程—电力电子与电力传动]