Cooling effect of oil cooling method on electric vehicle motors with hairpin winding
Cooling effect of oil cooling method on electric vehicle motors with hairpin winding
复制标题
DOI：
10.1007/s12206-020-1240-y
复制
发表时间：
2021-01-09
影响因子：
1.6
通讯作者：
Ryou, Hong Sun
中科院分区：
文献类型：
--
作者：
Ha, Taewook;Kang, Yerim;Ryou, Hong Sun
分析了油冷方式对发卡式绕组电动汽车电机的冷却效果。应用了某商用车公司正在开发的160 kW电机。首先对油液流场进行了分析。在顶部，96%的油流动;在焊接部分，90%的油流动。其次，对定子和线圈的传热进行了分析。线圈的焊接部分的平均温度比冠部的平均温度高4%。最后，进行了参数研究，以了解温度和流量的油对电机的温度分布的影响。随着流速的增加，最高温度降低。然而，在大于0.8 LPM/LPM时没有大的差异。研究结果为了解油冷电机的冷却效果提供了重要信息。
The cooling effect of oil cooling method on electric vehicle motors with hairpin winding is analyzed. A 160 kW motor being developed by a commercial vehicle company is applied. Firstly, the flow field of oil was analyzed. In the crown part, 96% of the oil flowed; in the welded part, 90% of the oil flowed. Secondly, an analysis of the heat transfer in the coil and stator was performed. The welded part of the coil exhibited an average temperature 4% higher than that of the crown part. Finally, the parametric study was conducted to understand the effect of the temperature and flow rate of the oil on the temperature distributions of the motor. As the flow rate increases, the maximum temperature decreases. However, there is not a big difference at more than 0.8 LPM/LPM. The results provide important information for understanding the effect of a motor using oil cooling.