相变材料/导热翅片复合热管理系统应用于三元体系锂离子动力电池模组实验研究

doi:10.12052/gdutxb.190096

Abstract

Abstract: For evaluating the heat dissipation properties of different battery thermal management systems (BTMS), three cooling technologies containing natural convection, phase change materials (PCM) and PCM/low fins were applied in the ternary power battery module. Furthermore, relative experiments at different discharge rates and charge-discharge cycles under room/high temperature (25℃/45℃) were carried out to compare the temperature change principles, heat generation rate and temperature increasing gradient. Ultimately, peak temperature and the maximum temperature difference during the overall discharge process were deeply assessed to investigate the influence of diverse heat dissipation medium on operation safety. Testing results indicate that no matter under high discharge rate or large current charge-discharge cycle conditions under room and higher temperature environment, the battery module adopting PCM/heat-conducting fins cooling method through the heat dissipation of negative, positive locations and surrounding surfaces area, exhibits an outstanding ability to cool down as soon as possible and stretch the temperature, accompanying with the peak temperature uniformity within 5℃, and further meeting the temperature consistency requirements of the power battery modules.

Key words: ternary power battery module, phase change material, heat conductive fins, thermal management system, balancing the temperature

CLC Number:

TK112

Zhang Jiang-yun, Zhang Guo-qing, Chen Xuan-zhuang, Zhen Zhi-cheng. An Experimental Study of Thermal Management System Based on Phase Change Materials Coupled with Low Fins for Ternary Lithium-ion Power Battery Module[J].Journal of Guangdong University of Technology, 2020, 37(01): 15-22.

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An Experimental Study of Thermal Management System Based on Phase Change Materials Coupled with Low Fins for Ternary Lithium-ion Power Battery Module

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