电流特征对锂离子电池性能的影响研究  

RESEARCH ON INFLUENCE OF CURRENT CHARACTERISTICS ON PERFORMANCE OF LITHIUM-ION BATTERY

作　　者：申永鹏 孙嵩楠 孙建彬 孙冬 唐耀华 王延峰 Shen Yongpeng;Sun Songnan;Sun Jianbin;Sun Dong;Tang Yaohua;Wang Yanfeng(College of Electrical and Information Engineering,Zhengzhou University of Light Industry,Zhengzhou 450002,China;Rundian Energy Science Technology Co.,Ltd.,Zhengzhou 450000,China)

机构地区：[1]郑州轻工业大学电气信息工程学院,郑州450002 [2]润电能源科学技术有限公司,郑州450000

出　　处：《太阳能学报》2023年第6期61-70,共10页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(62273313);河南省科技攻关项目(222102240005);河南省青年骨干教师培养计划项目(2021GGJS089);郑州市协同创新专项(2021ZDPY0204)。

摘　　要：以镍钴锰酸锂、镍钴铝酸锂、磷酸铁锂和钛酸锂4种锂离子动力电池为研究对象,建立测试实验平台,并设计实验流程,综合电流曲线、放电倍率和环境温度等工况因素,研究运行工况对4种锂离子动力电池可用能量、温升的影响。实验结果表明:温度是影响电池可用能量的主要因素之一,钛酸锂电池可用能量受温度影响最小,磷酸铁锂电池受温度影响最大;放电倍率是影响电池可用能量的另一个关键因素,随着放电倍率的增加,4种电池可用能量均出现不同程度的衰减;阶跃电流或阶跃放电频率对镍钴锰酸锂电池和磷酸铁锂电池的可用能量具有较大影响。Four types of lithium-ion batteries,namely,nickel cobalt manganese oxide(NCM),nickel cobalt aluminum oxide(NCA),lithium iron phosphate(LFP),and lithium titanate(LTO),are used as the research objects to establish a test experimental platform,an experimental procedure is designed,and different current characteristics and environmental temperatures are studied.The discharging current curve,discharging rate,and temperature are considered to explore the effect of operating conditions on available energy and temperature rise of four types of lithium-ion power batteries.The experimental results show that temperature is one of the main factors affecting the available energy of the battery,in which the available energy of the LTO battery is least affected by temperature,and the LFP battery is most affected.The discharge rate is another key factor affecting the available energy of the battery.With the increase of discharge rate,the available energy of the four types batteries attenuates to different degrees.The step current or step discharge frequency may have a greater impact on the available energy of NCM battery and LFP battery.

关 键 词：锂离子电池 电流特征 环境温度 可用能量 温升 

分 类 号：TM912[电气工程—电力电子与电力传动]