Electric drive axle system with double-motor large-torque output W structure

Abstract

The invention discloses an electric drive axle system of a double-motor large-torque output W structure. The system comprises symmetrically distributed electric drive axle systems, each electric driveaxle system comprises symmetrically distributed motor assemblies, output shafts of the motor assemblies are connected with driving gears, the driving gears are meshed with driven gears of intermediate shafts, an intermediate shaft driving gear is installed at one end of each intermediate shaft driven gear, and the intermediate shaft driving gears at the two sides are meshed with main reduction quilt teeth respectively and are connected with a differential mechanism through the main reduction quilt teeth . The two motor power inputs, two input shafts, two intermediate shafts, main reduction driven gear, differential mechanism and gear shaft of a W structure are arranged, small width is achieved, the width of an auxiliary frame of a high-end electric vehicle can be reduced, and design of asuspension control arm is greatly optimized; double electricity is adopted, so that the problems of high-torque high-power (more than 800Nm) single-motor manufacturing cost, high-rotating-speed (morethan 15000rpm) bearing and the like are solved; and the low-cost, high-power, large-torque, high-rotating-speed and compact design structure is realized.

Description

technical field [0001] The invention relates to an electric drive axle system, in particular to an electric drive axle system with a double-motor high-torque output W structure. Background technique [0002] At present, high-end electric vehicles, pickup trucks, sports cars, etc. require higher speed, acceleration and drag, which put forward higher requirements for the electric drive axle system (more than 300kW, output of more than 5000Nm, output speed of more than 1800rpm), etc. At present, there are few motor products with high torque and high power (300kW, 800Nm, and above 15000rpm) for passenger cars, and they are expensive. It is difficult and expensive to manufacture bearings corresponding to the input torque and rotational speed. Most of the current schemes use two motors and one reducer scheme, which has low bearing life, low efficiency, and large size. Contents of the invention [0003] Purpose of the invention: The purpose of the present invention is to provid...

AI Technical Summary

Problems solved by technology

At present, there are few motor products with high torque and high power (300kW, 800Nm, and above 15000rpm) for passenger cars, and they are expensive

Bearings corresponding to the input torque and speed are difficult to manufacture and expensive

Most of the current schemes use two motors and one reducer scheme, which has low bearing life, low efficiency, and large size

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