The collision damage of the circuit system not only affects the normal operation of the safety-related parts of the automobile, but also easily causes damage to the circuit parts caused by the short circuit or open circuit of the circuit system, or even an accident. In order to prevent such accidents from happening, the collision protection of the circuit system should be fully considered in the whole vehicle development process.
At present, the collision protection research of automotive circuit systems in the industry mostly focuses on the high-voltage circuit system of hybrid or pure electric vehicles, and it is divided into high-voltage components and high-voltage wiring harnesses for research. The collision damage evaluation of high-voltage components is mainly based on Whether the component shell exceeds the fracture strain of the material used is judged, and the failure risk evaluation of high-voltage wiring harnesses is mostly subjectively judged by whether it will be significantly squeezed, and there is no clear quantitative evaluation index.