车用磷酸铁锂/石墨电池性能特性研究(英文)  

Performance Characteristics of LiFePO_4/Graphite Batteries for Electric Vehicles

作　　者：曹辉[1,2] 陈晓宇[1,2] 侯敏 赵文鹏 张建文 王东[1,2] 

机构地区：[1]上海航天电源技术有限公司 [2]上海空间电源研究所

出　　处：《汽车安全与节能学报》2011年第1期58-61,共4页Journal of Automotive Safety and Energy

基　　金：Science and Technology Commission of Shanghai Municipality, New energy Technologies Program(c68545950x 00220090001)~~

摘　　要：为适合电动车用需求,设计并测试了质量850g容量25Ah磷酸铁锂为阳极的电池。采用了不同的倍率放电,循环测试和滥用测试等方法,对电池性能进行了评估。该电池在1C倍率放电条件下容量达到26Ah;在6C倍率(150A)放电下,50%充电状态(SOC)电压在3V左右,容量保持可达98%。在1700次循环后,保持90%的容量。电池通过了由美国政府制订的相关标准中的全部"滥用"测试。可以得出结论:该电池具有平缓的放电电压平台和很好的放电性能,长循环寿命均符合车用要求。由该单体电池2并联102串联所组装的16kWh车用电池系统已经提交给上海汽车集团测试使用。Cells of 25 Ah with mass of 850 g were designed and tested with LiFePO4 （LFPO） as cathode material according to electrical vehicle demands. Discharges of different rates, cycles tests and abuse tests were adopted to certify that the ceils have a discharge capacity of 26 Ah at 1 C rate and a high-rate capacity retention of 98% even at 6 C rate （150 A）. The voltage at 50% SOC （state of charge） is about 3.0 V when discharged at 6 C rate. The capacity retention of 25-Ah cells is about 90% after 1 700 cycles, All the abuse tests on 25-Ah cells were carried out based on ＂Electrical Energy Storage System Abuse Test Manual for Electric and Hybrid Electric Vehicle Applications＂ suggested by U.S. Department of Energy FreedomCAR ＆ Vehicle Technologies Program with satisfactory results. The 16-kWh EV battery units each assembled by 2 parallel, 102 series connections using these batteries have been delivered to Shanghai Automotive Industry Corporations.

关 键 词：锂离子电池 电动车(EV) LiFePO_4 

分 类 号：TM912.9[电气工程—电力电子与电力传动]