电动汽车电机冷却水道设计  

Design of cooling water channels for electric vehicle motors

作　　者：杨晓光 娄华语 张明[1] 王陶[1] 王良模[1] YANG Xiaoguang;LOU Huayu;ZHANG Ming;WANG Tao;WANG Liangmo(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,Jiangsu,China)

机构地区：[1]南京理工大学机械工程学院,江苏南京210094

出　　处：《农业装备与车辆工程》2024年第8期132-137,共6页Agricultural Equipment & Vehicle Engineering

摘　　要：散热性能对电机的工作效率有重要影响,电机温升问题直接影响电动汽车的稳定性和安全性。优化设计冷却水道有助于提高电机的散热效率,延长电机使用寿命,降低能耗,符合节能减排要求。首先通过Maxwell软件分析电机正常工况下的损耗;然后建立电机等效三维模型,采用外壳水道冷却方式建立4种冷却水道模型,通过Fluent软件分析不同冷却水道的散热性能,对比水道的综合冷却效果,进一步研究了4种水道的不同水道截面尺寸对电机散热性能的影响;最后运用综合评价方法,获得最适合当前电机的水道类型和水道截面尺寸。The heat dissipation performance of the motor has an important impact on the working efficiency of the motor,and its temperature rise directly affects the stability and safety of the electric vehicle.Optimizing the design of cooling channels helps to improve the heat dissipation efficiency of motors,extend their service life,reduce energy consumption,and meet energy-saving and emission reduction requirements.Firstly,Maxwell was used to analyze the loss of the motor under normal working conditions,and then the equivalent three-dimensional model of the motor was established.Four kinds of cooling water channel models were established by means of shell water channel cooling.Fluent was used to analyze the heat dissipation performance of different cooling waterways,compare the comprehensive cooling effect of the waterways,and further study the influence of different water section sizes of four kinds of waterways on the heat dissipation performance of the motor.Finally,the comprehensive evaluation method was used to select the most suitable type and cross section size of the current motor.

关 键 词：电机冷却 外壳水冷 水道类型 截面尺寸 综合评价方法 

分 类 号：TM351[电气工程—电机]