Abstract: With the rapid development of the new energy automobile industry, the competition is intensifying, and the requirements of car companies are getting higher and higher in terms of weight reduction and cost reduction and technological innovation. The energy utilization rate and integration of thermal management system have become one of the core elements of product competitiveness, and the heat energy utilization of electric drive assembly has become an important topic of industry research. Through the test of active heating technology of electric drive assembly on the vehicle, the influencing factors, performance and application difficulties of active heating are analyzed, and how to improve the performance and energy utilization rate of active heating and enhance the application feasibility of this technology are discussed. To achieve a high degree of integration of thermal management system, reduce vehicle weight and cost, improve the low temperature adaptability of electric vehicles, and enhance user experience. It has practical guiding significance, and also provides reference experience for the development of active heating technology of electric drive assembly.

Key words: electric vehicle; active heating technology; electric drive system; thermal management system; low-temperature performance

摘要： 随着新能源汽车行业的快速发展，竞争日益加剧，车企在整车减重降本、技术创新方 面的要求越来越高，热管理系统的能量利用率、集成度成为产品竞争力的核心要素之一，电 驱总成的热能利用成为行业研究的重要课题。文章通过电驱总成主动加热技术在整车上的搭 载测试，分析主动加热的影响因素、性能表现和应用难点，探讨如何改善主动加热性能表现 和能量利用率、提升该技术应用可行性，以实现热管理系统高度集成，降低整车重量和成本、 改善电动汽车低温适应性，提升用户体验，具有实际的指导意义，也为后续电驱总成的主动 加热技术开发提供了可借鉴参考的经验。

关键词: 电动汽车；主动加热技术；电驱总成系统；热管理系统；低温性能