Lightweight design and optimization of three-speed electric drive axle

Abstract

In order to provide wider speed range and smaller volume, wet multi-plate clutches and planetary gears are utilized to design a three-speed transmission system, electric drive axle housing is designed according to the transmission system. Aluminum alloy is used to perform lightweight design. Firstly, the finite element (FE) models of electric drive axle housing are built. Secondly the stiffness and strength simulation results of electric drive axle housing under different conditions are obtained. According to the simulation results, the thickness of electric drive axle housing is reduced and the stiffeners are added. The FE results show that the quality of the optimized shell is greatly reduced on the basis of the original stiffness and durability.

Analysis of the force of new energy vehicle drive bridge

“…The main difference between pure electric vehicles and fuel vehicles is that the motor of electric vehicles replaces the fuel engine and fuel tank of fuel vehicles, so the other systems of the vehicle, including steering, drive, braking and other systems, are roughly the same, that is, the structure of the vehicle's drive axle, reducer, differential and so on is universal [12].…”