文章针对新能源汽车碰撞场景中高压线束安全性研究不足的问题，提出融合多尺度试验与仿真分析的安全判定方法。首先通过分层解析高压线束材料力学特性，建立双组份等效有限元模型；其次设计专用挤压测试装置，对波纹管和防割布防护的线束进行测试；最后对比整车碰撞仿真与试验阈值，建立包含 10%安全裕度的判据体系，为高压线束安全设计提供参考。

This article addresses the issue of insufficient research on the safety of high-voltage wiring harnesses in collision scenarios of new energy vehicles and proposes a safety determination method that integrates multi-scale tests and simulation analysis. Firstly，by layer-by-layer analysis of the mechanical properties of high-voltage wire harness materials，a two-component equivalent finite element model is established；secondly，a dedicated extrusion testing device is designed to test the wire harnesses protected by corrugated tubes and anti-cutting cloth. Finally，by comparing the vehicle collision simulation and test thresholds，a criterion system with a 10% safety margin was established to provide a reference for the safety design of high-voltage wiring harnesses.