电流特征对锂离子电池性能的影响研究

申永鹏; 孙嵩楠; 孙建彬; 孙冬; 唐耀华; 王延峰

doi:10.19912/j.0254-0096.tynxb.2022-0078

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太阳能学报 ›› 2023, Vol. 44 ›› Issue (6) : 61-70. DOI: 10.19912/j.0254-0096.tynxb.2022-0078

电流特征对锂离子电池性能的影响研究

申永鹏¹, 孙嵩楠¹, 孙建彬¹, 孙冬¹, 唐耀华², 王延峰¹

作者信息 +

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

Shen Yongpeng¹, Sun Songnan¹, Sun Jianbin¹, Sun Dong¹, Tang Yaohua², Wang Yanfeng¹

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文章历史 +

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。

Abstract

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.

导出引用

申永鹏, 孙嵩楠, 孙建彬, 孙冬, 唐耀华, 王延峰. 电流特征对锂离子电池性能的影响研究[J]. 太阳能学报. 2023, 44(6): 61-70 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0078

Shen Yongpeng, Sun Songnan, Sun Jianbin, Sun Dong, Tang Yaohua, Wang Yanfeng. RESEARCH ON INFLUENCE OF CURRENT CHARACTERISTICS ON PERFORMANCE OF LITHIUM-ION BATTERY[J]. Acta Energiae Solaris Sinica. 2023, 44(6): 61-70 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0078

中图分类号： TM912

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