上海交通大学学报

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2019 , Vol. 53 >Issue 9: 1051 - 1057

DOI: https://doi.org/10.16183/j.cnki.jsjtu.2019.09.006

学报（中文）

极寒环境下动力锂离子电池特性

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  • 上海交通大学 海洋工程国家重点实验室； 高新船舶与深海开发装备协同创新中心， 上海 200240
黄德扬(1994-)，男，湖南省长沙市人，博士生，研究方向为锂离子电池系统状态估计与热管理.

网络出版日期: 2019-10-11

基金资助

国家自然科学基金资助项目（51677119）

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Characteristics of Power Lithium-Ion Batteries at Extreme Cold Environment

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  • State Key Laboratory of Ocean Engineering; Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai Jiao Tong University, Shanghai 200240, China

Online published: 2019-10-11

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摘要

针对极地无人机系统供电保障问题，为极地锂离子电池开发及电池管理技术研究提供依据，对12 A·h 三元镍钴锰酸锂电池在极寒环境下的特性展开了实验研究.结果表明：在0 ℃以下，随着环境温度的降低，电池在不同放电倍率下的可用容量迅速减小，最大放电深度的衰减速率不断加快，欧姆内阻与极化内阻均显著增大且极化内阻的变化更为突出，开路电压明显降低；在低于－40 ℃的环境温度下，放电前对电池表面进行预热能显著改善电池放电性能，预热温度的变化不影响相同倍率放电时电池表面的平衡温度，同时采取预热与保温措施能够有效恢复电池的容量特性与功率特性.

关键词： 镍钴锰酸锂电池； 极寒环境温度； 电池特性； 预热； 保温

本文引用格式

黄德扬，陈自强，周诗尧，刘健，郑昌文，葛云龙 . 极寒环境下动力锂离子电池特性[J]. 上海交通大学学报, 2019 , 53(9) : 1051 -1057 . DOI: 10.16183/j.cnki.jsjtu.2019.09.006

Abstract

Research on characteristics of power Li-ion batteries at extreme cold environment is the most necessary task for optimizing the battery design and the battery management system of unmanned aerial vehicle powered by Li-ion batteries in the application of polar research. A series of experiments are taken to explore the characteristics of a 12 A·h Li(NiCoMn)O2 lithium battery at extreme cold environment. The results show that the available capacities of battery under different discharge rates decrease rapidly at subzero temperatures, and the attenuation rate of the maximum depth of discharge speed up with falling temperature. Meanwhile, the discharge internal resistances, especially the polarization resistance, increase substantially. The open-circuit voltage is reduced evidently. Moreover, the implement of preheating before discharging can well recover battery performance at the ambient temperatures below －40 ℃. The equilibrium temperature of battery surface remains unchanged under the same discharge rate even with changing preheating temperature. The capacity and power characteristics of battery can be recovered effectively by utilizing both the preheating and heat insulation methods at the same time.

Key words： NCM lithium ion battery; extreme cold temperature; battery characteristics; preheating; heat insulation

参考文献

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