矿山机车用中等功率型锂离子电池制备技术  

The Preparation Technology of the Medium-Power Lithium-Ion Battery for the Mine Tractor

作　　者：王先友[1] 魏思伟[1] 舒洪波[1] 吴强[1] 杨秀康[1] 杨顺毅[1] 肖琼[1] 

机构地区：[1]湘潭大学化学学院环境友好化学与应用教育部重点实验室,湖南湘潭411105

出　　处：《湘潭大学自然科学学报》2011年第1期53-58,共6页Natural Science Journal of Xiangtan University

基　　金：国家自然科学基金项目(20871101);科技部科技计划项目(2009GJD20021);湖南省科技厅重点攻关项目(2009WK2007);湖南省自然科学市州联合基金重点项目(09JJ8001)

摘　　要：分别以LiFePO4、人造石墨为正、负极活性物质,成功研制出可替代铅酸电池用于矿山机车、额定容量为23 Ah的中等功率4866135型方型钢壳锂离子电池.针对矿山机车使用工况,提出了锂离子动力电池的设计依据和各项工艺参数,重点研究了电池的荷电特性、功率特性和安全性能.测试结果表明,4866135型锂离子电池5 C倍率的持续放电质量比功率高达354.6 W/kg,1 C循环450周,容量保持率在86%以上.安全性能测试表明,电池可靠性高,各项技术指标均达到了设计要求.The medium-power 4866135 size lithium-ion battery with nominal capacity of 23 Ah was fabricated using LiFePO4 as cathode active material and graphite as anode active material.Based on actual condition of mine tractor,the design principle and parameters for the power lithium ion battery were suggested.Besides,charge retention characteristic,power performance and safety property of the battery were mainly studied.The results showed that the 4866135 size lithium-ion battery exhibited a power density of 354.6 W/kg at a charge/discharge rate of 5 C.The capacity retention was more than 86% after 450 cycles at a charge/discharge rate of 1 C.Safety performance test showed that battery reliability and other technology parameters can meet the design requirements.

关 键 词：磷酸铁锂 锂离子动力电池 中等功率 矿山机车 

分 类 号：TM912.9[电气工程—电力电子与电力传动]