Abstract: This study aims to analyze the physical modeling technology of electric vehicles and its applications in typical fields, optimize the design and use of electric vehicles through technical analysis of the model. The article proposes a feasible modeling method based on the working principle and related theories of electric vehicles, and uses Newtonian mechanics based methods to establish a "two degree of freedom dynamics" formula model that can reflect the actual operating state of electric vehicles. The article adopts literature analysis and mathematical modeling methods to establish a physical model technology framework, which can deeply analyze and optimize the performance and safety of electric vehicles. It provides a basis for subsequent motion analysis, control strategy design, and performance optimization. This analysis is of great significance for promoting the development of electric vehicles.

Key words: Electric vehicles; Physical modeling; Two degree of freedom dynamics

摘要： 该研究旨在分析电动汽车物理建模技术及其在典型领域的应用，通过对模型的技术分 析，优化电动汽车的设计。文章基于电动汽车的工作原理和相关理论，提出可行的建模方法， 运用基于牛顿力学的方法，建立了能够反映电动汽车实际运行状态的“二自由度动力学”公 式模型。采用文献分析、数学建模手段建立了物理模型技术框架，可对电动汽车性能和安全 性进行深入分析和优化，为后续的运动分析、控制策略设计以及性能优化提供了依据，该分 析对于推动电动汽车的发展具有重要意义。

关键词: 电动汽车；物理建模；二自由度动力学