Design method and design system for electric vehicle power assembly hoisting assembly

The invention relates to the technical field of automobile power system design, in particular to an electric vehicle power assembly hoisting assembly design method and system. Comprising the steps of determining a structure of a hoisting assembly based on an assembly mode of a power assembly; based on the installation size of the power assembly, an installation design area of the hoisting assembly is determined between the left longitudinal beam and the right longitudinal beam; a simulation model of the installation design area is constructed, topological optimization is conducted on the installation design area based on the bearing requirement of the power assembly, an optimized design area of the hoisting assembly is obtained, and the volume range of the hoisting assembly is determined based on the volume of the optimized design area; determining the length, width and height of the hoisting assembly based on the structure of the hoisting assembly and the volume range of the hoisting assembly; and determinin