车用动力电池模组风冷散热分析  

Analysis of Air Cooling Vehicle Power Battery Module

作　　者：刘显茜[1] 王涛[1] 王小勇 王欢 LIU Xianxi;WANG Tao;WANG Xiaoyong;WANG Huan(Faculty of Mechanical and Electrical Engineering,Kunming University of Science and Technology,Kunming 650500;Information of Center,Changchun University of Science and Technology,Changchun 130022)

机构地区：[1]昆明理工大学机电工程学院,昆明650500 [2]长春理工大学信息化中心,长春130022

出　　处：《长春理工大学学报（自然科学版）》2018年第2期96-99,共4页Journal of Changchun University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(51566006)

摘　　要：为了降低车用动力电池模组的最高温度、提高其温度分布一致性,以4×8等间距排列18650锂离子电池模组为分析对象,运用ANSYS Fluent软件对圆形进风口,圆形、半圆形及矩形出风口三种不同散热结构及尺寸电池模组温度场进行了计算。结果表明:矩形出风口散热结构电池模组的最高温度和温度变异系数比相同工况下圆形与半圆形出风口散热结构都小。当进口风速为1~3m/s,矩形出风口为40mm×50mm时,电池模组的最高温度和温度变异系数最小;当进口风速>3m/s、矩形出风口为40mm×70mm时,电池模组的最高温度和温度变异系数最小。In order to reduce the maximum temperature of the battery module and to improve the uniformity of its temperature distribution,the 18650 lithium-ion battery modules arranged at 4×8 equidistant intervals was calculated under the three different heat dissipation structures and sizes of the battery module in circular inlet,and circular,semicircular and rectangular outlet with ANSYS Fluent software.The results showed that the maximum temperature and temperature variation coefficient of the heat dissipation structure of the rectangular air outlet are smaller than those of the circular and semi-circular air outlet in the same working conditions.When the inlet wind speed is 1~3m/s and the rectangular outlet is 40mm×50mm,the maximum temperature and the temperature variation coefficient of the battery module are the smallest.And,when the inlet wind speed is more than 3m/s and the rectangular outlet is 40mm×70mm,these two parameters of the battery module are the minimum.

关 键 词：车用动力电池 散热分析 最高温度 温度变异系数 

分 类 号：U469.72[机械工程—车辆工程]