电动汽车轮毂电机散热规律  

Heat dissipation law of electric vehicle in-wheel motor

作　　者：江从喜 赵兰萍[1,2,3] 苗露 杨志刚[1,2,3,4] JIANG Congxi;ZHAO Lanping;MIAO Lu;YANG Zhigang(Shanghai Key Lab of Vehicle Aerodynamics and Vehicle Thermal Management Systems, Shanghai 201804, China;a. Shanghai Automotive Wind Tunnel Center;b. School of Mechanical Engineering, Tongji University, Shanghai 201804, Chin;3. COMAC Beijing Aeronautical Science ＆ Technology Research Center, Beijing 102211, Chin)

机构地区：[1]上海市地面交通工具空气动力与热环境模拟重点实验室,上海201804 [2]同济大学上海地面交通工具风洞中心,上海201804 [3]同济大学机械与能源工程学院,上海201804 [4]中国商飞北京民用飞机技术研究中心,北京102211

出　　处：《计算机辅助工程》2018年第2期47-52,共6页Computer Aided Engineering

基　　金：上海市地面交通工具风洞专业技术服务平台项目(16DZ2290400)

摘　　要：采用计算流体力学方法对电动汽车轮毂电机的散热规律进行数值仿真计算,得到整车流场下各电机的表面温度、表面传热系数,各车轮的空气质量流等参数的分布及变化规律。结果表明:前轮电机受前端散热模块影响较大;右前轮电机外壳温度高于左前轮电机和后轮电机;前轮电机表面传热系数明显大于后轮。随着车速的增加,产生较多的冷却气体,电机表面散热情况有所好转。Computational fluid dynamics method is used to simulate the heat dissipation law of in-wheel motor of electric vehicle. The heat transfer coefficient and temperature of each motor surface are obtained as well as distribution and variation of the air mass flow of each wheel. The results show that,the front wheel motor is greatly affected by front-end heat dissipation module; the shell temperature of the right front wheel motor is higher than that of the left front wheel and rear wheel motor; the surface heat transfer coefficient of the front wheel motor is obviously bigger than that of the rear wheel. With the increase of speed,more cooling gas is produced,and the surface heat dissipation of the motor is improved.

关 键 词：电动汽车 轮毂电机 计算流体力学 传热系数 散热规律 

分 类 号：U469.72[机械工程—车辆工程] U463.343[交通运输工程—载运工具运用工程]