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HAN Jing,WU Xiaogang,SUN Jinlei.Analysis of Cooling Influence Factors for Power Battery Box of Electric Vehicle[J].JOURNAL OF POWER SUPPLY,2019,17(1):120-127,144
Analysis of Cooling Influence Factors for Power Battery Box of Electric Vehicle
Received:December 15, 2016  Revised:February 15, 2018
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DOI:10.13234/j.issn.2095-2805.2019.1.120
Keywords:electric vehicle  battery box  air duct size  air cooling
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HAN Jing School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin , China
WU Xiaogang School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin , China;State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Chongqing University, Chongqing , China xgwu@hrbust.edu.cn
SUN Jinlei School of Automation, Nanjing University of Science and Technology, Nanjing , China
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Abstract:
      In consideration of the unsatisfactory cooling effect of battery box used in the ventilation cooling structure, a thermal analysis method for power battery box is proposed based on the finite element model of battery. On this basis, a li-ion power battery box with a certain structure is chosen as the research object, and the influence factors of temperature rise for battery box including wind speed of inlet and air duct size are analyzed. Simulation results show that the uniformity in battery box temperature is improved along with the increase of wind speed. When the wind speed is 5 m/s, the standard deviation of battery temperature is between 1.0 and 1.7. When the air duct size is 12 mm and wind speed is 5 m/s, the maximum and minimum temperature rises are 7.3℃ and 5.4℃, respectively, and the standard deviation of average temperature is 1.47; the battery pack can be controlled to work in a normal temperature range, and the uniformity in battery pack temperature distribution is the best.
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