Performance Study of Battery Thermal Management System With a Bionic Cooling Plate Based on Leaf Vein Channels of Plantain

Author:

Tang Zhiguo1,Sun Ran1,Lu Kuan1,Cheng Jianping1

Affiliation:

1. Hefei University of Technology School of Mechanical Engineering, , Hefei, Anhui 230009 , China

Abstract

Abstract The microchannel cooling plate is a vital component in an efficient battery thermal management system (BTMS) that has been widely used to design battery modules for electric vehicles. In this study, regarding the leaf vein structure of plantain, a novel bionic cooling plate similar to the plantain leaf vein channels was proposed. A three-dimensional mathematical model of BTMS including the bionic cooling plate was established. The effects of the structure type; the reducing angle of the main inlet channel; the number, angle, and width of branch channels; and the inlet mass flowrate of the coolant on the thermal performance of the BTMS were investigated. The results indicated that the cooling plate of single-inlet and double-outlet channels with leaf veins exhibited excellent comprehensive performance. The increase of the reducing angle of the main inlet channel decreased the pressure drop by up to 43.55% but could not improve the temperature uniformity of batteries; the maximum temperature difference of batteries increased by 0.11 °C. A larger number of branch channels and a smaller angle of branch channels can improve the cooling performance of BTMS, while the increase in the width of branch channels significantly decreases the pressure drop. At a coolant inlet mass flowrate of 1 g/s, the BTMS can control the maximum temperature and maximum temperature difference of the batteries at a 3C discharge rate to 31.75 °C and 4.95 °C, respectively, and exhibited excellent temperature uniformity at low pressure drop (669 Pa).

Publisher

ASME International

Subject

Fluid Flow and Transfer Processes,General Engineering,Condensed Matter Physics,General Materials Science

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