微特电机 ›› 2025, Vol. 53 ›› Issue (10): 30-38.

• 设计分析 • 上一篇    下一篇

基于 MOPSO 寻优的动力总成冷却结构设计

位  豪1,梁  冰2,梁  昊3   

  1. 1. 江苏速豹动力科技有限公司,常州 213300;  2. 重庆理工大学 车辆工程学院,重庆 400054; 3. 苏州英特莫科技股份有限公司,苏州 215500
  • 出版日期:2025-10-28 发布日期:2025-10-28
  • 作者简介:位豪( 1997—) ,男,本科,工程师,研究方向为新能源电机设计。 梁冰( 1997—) ,女,硕士研究生,研究方向电机热管理。

Optimal Design of Power Assembly Cooling Structure Based on MOPSO

WEI Hao1,LIANG Bing2,LIANG Hao3   

  1. 1. Jiangsu Suobao Power Technology Co.,Ltd.,Changzhou 213300,China;
    2. School of Vehicle Engineering,Chongqing University of Technology,Chongqing 400054,China;
    3. Suzhou Intermate Technology Co.,Ltd.,Suzhou 215500,China
  • Online:2025-10-28 Published:2025-10-28

摘要: 针对纯电动商用车动力总成热负荷大、损耗严重的问题,以电机与变速器直连驱动动力总成为研究对象,展开动力总成温度场分析与优化研究。 建立了动力总成的几何模型,通过仿真分析与理论计算求解不同工况下的电机与变速器损耗;先后设计了螺旋形水道、半分割形水道、之字形水道以及 Z 字形水道,构建动力总成温度场求解模型,并结合冷却效果、 流道阻力以及加工便利性等优选结构方案。 基于优选水道结构, 采用多目标粒群算法( multi-objective particle swarm optimization,MOPSO) 对水道结构参数进行优化,并进行温升实验对比。 结果表明,优化后的之字形水道使壳体温度降低了 7. 9%。

关键词: 动力总成, 冷却系统, 多目标优化, 温升实验

Abstract: Aiming at the problems of high thermal load and severe loss in the power assembly of pure electric commercial vehicles,the temperature field analysis and optimization of the power assembly with direct connection between the motor and the transmission were carried out. The geometric model of the power assembly was established,and the losses of the motor and the transmission under different working conditions were solved through simulation analysis and theoretical calculation. The spiral water channel,semi-segmented water channel,zigzag water channel and Z-shaped water channel were designed successively,and the temperature field solution model of the power assembly was constructed. The structural scheme was optimized in combination with the cooling effect, flow channel resistance and processing convenience. Based on the optimized water channel structure, the multi-objective particle swarm optimization ( MOPSO ) was used to optimize the structural parameters of the water channel,and the finite element simulation calculation and temperature rise experiment were carried out for comparison. The results show that the optimized zigzag water channel reduces the shell temperature by 7. 9%.