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Automotive Engineering ›› 2020, Vol. 42 ›› Issue (5): 658-664.doi: 10.19562/j.chinasae.qcgc.2020.05.014

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Experiment Study on Heat Transfer Characteristics of Honeycomb Liquid Cooled Battery Module

Feng Nenglian1, Dong Shikang1, Li Dezhuang1, Chen Longke2, Feng Shou1   

  1. 1.Faculty of Environmental and Life, Beijng University of Technology, Beijng 100124;
    2.DIAL EV Co., Ltd., Ningbo 315500
  • Online:2020-05-25 Published:2020-06-17

Abstract: A novel honeycomb liquid cooled battery module is developed for a 21700 lithium-ion battery with a capacity of 4 A·h and a test platform is constructed to measure the heat-transfer characteristics of the battery module. The results show that under an ambient temperature of 25 ℃,the maximum temperature difference of the battery module is less than 2 ℃ in the processes of both 0.5C constant-current / constant voltage charging and 1C constant-current discharging. When the ambient temperature rises to 40 ℃ with a cooling liquid flow rate larger than 1 L/min, the maximum temperature difference of the battery module can maintain at below the limit value of 5 ℃ in the course of 1C constant-current discharging. It is demonstrated that honeycomb liquid cooled battery module has a good cooling performance, providing technical supports for the design of battery thermal management scheme in the future

Key words: lithium-ion battery, honeycomb liquid cooled battery module, heat transfer characteristics, battery thermal management