摘 要
随着新能源汽车和工业自动化技术的快速发展，电驱动系统的高效散热成为提升其性能与可靠性的关键问题。针对传统散热结构在高功率密度工况下热管理能力不足的问题，本文提出了一种新型电驱动系统散热结构设计方法。通过结合流体动力学仿真与热网络模型分析，优化了冷却通道布局与热传导路径，显著提升了散热效率。研究采用数值模拟与实验验证相结合的方式，对新结构在不同工况下的热分布特性进行了全面评估。结果表明，所设计的散热结构能够有效降低关键部件的温升，最高温度降幅达15%，同时改善了系统的温度均匀性。此外，该设计在轻量化与紧凑性方面表现出明显优势，为高功率密度电驱动系统的热管理提供了创新解决方案。本研究不仅验证了新结构的可行性和优越性，还为相关领域的工程应用奠定了理论基础。
关键词：电驱动系统；散热结构；热管理
Abstract
With the rapid development of new energy vehicles and industrial automation technologies, efficient heat dissipation of electric drive systems has become a critical issue for enhancing their performance and reliability. In response to the insufficient thermal management capability of traditional cooling structures under high power density conditions, this study proposes a novel design method for an electric drive system cooling structure. By integrating computational fluid dynamics simulations with thermal network model analysis, the layout of cooling channels and thermal conduction paths is optimized, leading to a significant improvement in heat dissipation efficiency. The research employs a combination of numerical simulation and experimental validation to comprehensively evaluate the thermal distribution characteristics of the new structure under various operating conditions. Results indicate that the designed cooling structure effectively reduces the temperature rise of key components, achieving a maximum temperature reduction of 15%, while also improving the temperature uniformity of the system. Moreover, the design demonstrates clear advantages in terms of lightweight construction and compactness, providing an innovative solution for thermal management in high power density electric drive systems. This study not only verifies the feasibility and superiority of the new structure but also lays a theoretical foundation for engineering applications in related fields.
Keywords: Electric Drive System；Heat Dissipation Structure；Thermal Management
目 录
引言 1
一、电驱动系统散热需求分析 1
（一）电驱动系统热源特性研究 1
（二）散热需求与性能指标 1
（三）现有散热方案局限性分析 2
二、高效散热结构设计原理 2
（一）散热材料选择与优化 2
（二）结构设计理论基础 3
（三）设计参数对散热效率的影响 3
三、散热结构仿真与优化 4
（一）热仿真模型建立方法 4
（二）关键参数敏感性分析 4
（三）基于仿真的结构优化策略 4
四、实验验证与性能评估 5
（一）实验平台搭建与测试方法 5
（二）散热性能实验数据分析 5
（三）高效散热结构的改进方向 6
结 论 6
致 谢 7
参考文献 8
