Abstract: With the rapid development of electrification technology in the commercial vehicle sector, the electric drive axle system, as an efficient and energy-saving driving method, has gradually attracted attention. This article conducts configuration research, matching calculation and dynamic simulation analysis for semi-trailers equipped with electric drive axles. Firstly, the integration mode,layout position of the electric drive axle and its comparison with traditional fuel-powered semitrailers are discussed, and the influence of different configurations on vehicle performance is analyzed. Secondly, based on the parameters and performance requirements of conventional semitrailers, matching calculations and designs are carried out, and the dynamic model of the semi-trailer is established based on the Cruise software. Through simulation analysis, the influence of the configuration of the electric drive axle on the vehicle's acceleration performance, climbing performance and energy consumption is studied. The results show that the reasonable configuration of the electric drive axle can enhance the dynamic performance of the semi-trailer and reduce energy consumption at the same time. In addition, suggestions for optimizing the configuration are put forward, providing theoretical basis and technical support for the application of electric drive axles in semi-trailers. The research results are of great significance for promoting the electrification development of semi-trailers.

Key words: electric drive axle; hybrid semi-trailer; powertrain system; simulation

摘要： 随着电动化技术在商用车领域的快速发展，电驱动桥系统作为一种高效、节能的驱动 方式，逐渐受到关注。文章针对配置有电驱动桥的半挂车，开展了构型研究、匹配计算和动 力学仿真分析。首先，对电驱动桥的集成方式、布置位置以及与传统燃油型半挂车进行了对 比讨论，分析了不同构型对车辆性能的影响；其次，在常规半挂车参数及性能要求基础上进 行了匹配计算和设计，并基于 Cruise 软件建立了半挂车的动力学模型。通过仿真分析，研究 了电驱动桥配置对车辆加速性能、爬坡性能以及能耗的影响。结果表明，电驱动桥的合理配 置能够提升半挂车的动力学性能，同时降低能耗。此外，还提出了优化构型的建议，为电驱 动桥在半挂车中的应用提供了理论依据和技术支持，研究结果对于推动半挂车电动化发展具 有重要意义。

关键词: 电驱动桥；混合动力半挂车；动力系统；仿真