主办：陕西省汽车工程学会
ISSN 1671-7988  CN 61-1394/TH
创刊：1976年
汽车实用技术

汽车实用技术 ›› 2026, Vol. 51 ›› Issue (15): 42-48.DOI: 10.16638/j.cnki.1671-7988.2026.015.007

• 新能源汽车 • 上一篇    下一篇

基于多模态耦合的永磁同步电机主动冷却 系统及控制方法研究

李万平，周映双，何志良，王龙   

  1. 宜宾凯翼汽车有限公司
  • 发布日期:2026-08-11
  • 通讯作者: 李万平
  • 作者简介:李万平（1990－），男，助理工程师，研究方向为新能源汽车电驱匹配开发、控制优化及性能提升

Research on active cooling system and control method for permanent magnet synchronous motor based on multimodal coupling

LI Wanping, ZHOU Yingshuang, HE Zhiliang, WANG Long   

  1. Yibin Kaiyi Automobile Company Limited
  • Published:2026-08-11
  • Contact: LI Wanpin

PDF

摘要： 针对永磁同步电机在高功率密度下温升显著，影响性能与寿命的问题，研究旨在开发 一种高效的热管理系统。文章提出一种基于多模态耦合的主动冷却系统，其设计包括：定子 采用“纳米多孔陶瓷导热层-石墨烯基相变材料-微通道液冷板”的三层复合冷却结构；转子采 用“轴向油道-径向喷雾”的双路径冷却方案；引入基于长短期记忆（LSTM）神经网络的智 能控制系统，实现多参数协同与动态流量分配。试验结果表明，与传统液冷系统相比，方案 使定子与转子温升分别降低 41.7%、43.5%，系统功耗降低 50.6%，功率密度提升至 6.8 kW/kg。 该研究为提升纯电动汽车电驱系统热管理效率、延长续航里程及降低整车成本提供了有效的 技术路径。

关键词: 纯电动汽车；电机；电驱冷却系统

Abstract: To address the significant temperature rise of permanent magnet synchronous motors under high power density, which affects performance and service life, this study aims to develop an efficient thermal management system. An active cooling system based on multimodal coupling is proposed. The design includes: a three-layer composite cooling structure for the stator consisting of a "nanoporous ceramic thermal conductive layer–graphene-based phase change material–microchannel liquid cooling plate"; a dual-path cooling scheme for the rotor using "axial oil channel–radial spray"; and an intelligent control system based on a long short-term memory (LSTM) neural network to achieve multi-parameter coordination and dynamic flow distribution. Experimental results show that compared with conventional liquid cooling systems, this solution reduces the temperature rise of the stator and rotor by 41.7% and 43.5%, respectively, decreases system power consumption by 50.6%, and increases power density to 6.8 kW/kg. This research provides an effective technical pathway for improving the thermal management efficiency of electric drive systems in battery electric vehicles, extending driving range, and reducing overall vehicle costs.

Key words: battery electric vehicle; electric motor; electric drive cooling system