Electric drive axle assembly test system and electric drive axle assembly test method

CN122283274APending Publication Date: 2026-06-26ZHENGZHOU YUTONG BUS CO LTD

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Applications(China)
Current Assignee / Owner: ZHENGZHOU YUTONG BUS CO LTD
Filing Date: 2026-03-05
Publication Date: 2026-06-26

AI Technical Summary

Technical Problem

Existing electric drive axle assembly testing systems cannot effectively simulate the comprehensive working conditions of real vehicles, resulting in insufficient accuracy and reliability of life and safety test results. This is because multi-factor isolation or asynchronous loading cannot replicate the coupling effect of factors in real vehicles.

Method used

Design an electric drive axle assembly testing system that integrates mechanical towing, environmental simulation, and real vehicle power characteristics. Simulate the comprehensive stress state of the electric drive axle assembly during real vehicle operation by synchronously loading multi-dimensional factors through a unified control strategy.

Benefits of technology

It enables efficient and high-precision replication of the comprehensive stress state of real vehicles in the laboratory, stimulates real failure modes, and improves the accuracy and coverage of life and safety testing.

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Abstract

This application discloses an electric drive axle assembly testing system and method, relating to the field of vehicle testing technology. The system includes: a first electric drive axle assembly and a second electric drive axle assembly; a towing system mechanically coupling the output ends of the first and second electric drive axle assemblies; an environmental simulation unit providing a sealed space to accommodate the first and second electric drive axle assemblies, and controlling at least one of the temperature, humidity, and air pressure of the sealed space; a vibration simulation unit applying random vibration acceleration to the first or second electric drive axle assembly; a battery simulation unit supplying power to at least one electric drive axle assembly and simulating the voltage and power output characteristics of the vehicle's power battery; and a control unit controlling the towing system, environmental simulation unit, vibration simulation unit, and battery simulation unit to apply coupled mechanical loads, environmental loads, and electrical loads to the electric drive axle assembly according to predetermined test conditions.

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