Journal of Jilin University(Engineering and Technology Edition) ›› 2018, Vol. 48 ›› Issue (5): 1339-1348.doi: 10.13229/j.cnki.jdxbgxb20170860

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Simulation of mixed inner air-flow integrated thermal management with temperature uniformity of Li-ion battery

WANG Yan1,2, GAO Qing1,2, WANG Guo-hua1,2, ZHANG Tian-shi1,2, YUAN Meng1   

  1. 1.State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China;
    2.College of Automotive Engineering, Jilin University, Changchun 130022, China
  • Received:2017-08-16 Online:2018-09-20 Published:2018-12-11

Abstract: Large temperature difference can deteriorate the reliable operation of electric vehicle and battery cycle life. So it is essential to improve the temperature uniformity of battery pack. To enhance the heat transfer and reduce the temperature difference in a battery pack, a mixed inner air-flow Integrated Thermal Management (ITM) method is proposed by employing a small size axial fan. The performance of temperature control and temperature uniformity of single liquid Thermal Management (TM) and mixed inner air-flow ITM are analyzed and compared by Computational Fluid Dynamics (CFD). Furthermore, simulation on the thermal characteristic synergy of the mixed inner air-flow ITM is conducted by altering the aerodynamic characteristics and the position of the fan. Results show that the proposed method can effectively improve the temperature uniformity, thus enhancing the battery cycle life and the total performance of electric vehicle.

Key words: vehicle engineering, mixed inner flow, battery thermal management, fan aerodynamic characteristics, assembly position

CLC Number: 

  • U469.72
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