Method and device for testing reliability performance of electric drive system of hybrid electric vehicle

Abstract

The invention discloses a method and device for testing the reliability performance of an electric drive system of a hybrid vehicle, and the method comprises the steps: controlling a vehicle to carry out a driving test on a preset path according to a preset driving plan, wherein the preset path is provided with a plurality of detection points, the driving plan comprises the driving parameters which are corresponding to the detection points in a one-to-one manner, and the driving parameters comprise speed and acceleration; obtaining the driving parameter, detected by one detection point, of the vehicle when the vehicle arrives at the preset detection point; adjusting the driving parameters of the vehicle when the driving parameter detected by the current detection point is different from the driving parameter, corresponding to the current detection point, in the driving plan; detecting the performance parameter value of the vehicle, and determining that the reliability performance of the electric drive system is not qualified when the performance parameter value of the vehicle is lower than a standard performance parameter value. The method can quickly and completely detect the performance of the electric drive system of the hybrid vehicle in a limit test time period.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a method and device for testing the reliability performance of an electric drive system of a hybrid electric vehicle. Background technique [0002] Under the dual pressure of environmental protection and energy saving, new energy vehicles have become a major trend in the future development of the automotive industry. Due to the problems of "long charging time", "low energy density" and "high manufacturing cost" in vehicle batteries, the development of pure electric vehicles (EV) is severely restricted. Plug-in hybrid electric vehicles (PHEV) take into account the advantages of pure electric vehicles and traditional energy vehicles, and will be an important development direction in the future. The electric drive system of a hybrid vehicle is a very critical part of the vehicle function, and reliability is the most basic attribute of the system to realize the function, so how to verify ...

AI Technical Summary

Problems solved by technology

[0007] In view of the above situation, it is necessary to provide a method and device for testing the reliability performance of the electric drive system of hybrid electric vehicles in view of the lack of vehicle verification and incomplete verification in the reliability performance test of the electric drive system of the hybrid electric vehicle in the prior art

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