Journal of Shanghai Jiao Tong University

Journal of Shanghai Jiaotong University >

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

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

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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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

Cite this article

HUANG Deyang,CHEN Ziqiang,ZHOU Shiyao,LIU Jian,ZHENG Changwen,GE Yunlong . Characteristics of Power Lithium-Ion Batteries at Extreme Cold Environment[J]. Journal of Shanghai Jiaotong University, 2019 , 53(9) : 1051 -1057 . DOI: 10.16183/j.cnki.jsjtu.2019.09.006

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