Driving range testing device for electric vehicle power assembly and testing method thereof

Abstract

The invention discloses a driving range testing device for an electric vehicle power assembly. The device is used in cooperation with an electric vehicle test bench. The driving range testing device comprises an electric vehicle driving axle detachably mounted on the test bench. The electric vehicle driving axle is in transmission connection with a driving motor, the driving motor is electricallyconnected with a motor controller, the motor controller is electrically connected to a battery device, and a driving motor operation parameter monitoring device is arranged corresponding to the driving motor. Two ends of the electric vehicle drive axle are respectively in transmission connection with a dynamometer motor, and the two dynamometer motors are respectively connected to a mileage test control device. Also disclosed is a testing method of the device. Only a power assembly of the electric vehicle, namely an electric vehicle drive axle, a drive motor, a motor controller, a battery pack, a battery power distribution unit and the like, is used, so that the problem of difficulty in operation such as fault inspection, parameter measurement inspection, part replacement and the like is avoided, the working efficiency is greatly improved, and the development and production period is shortened.

Description

technical field [0001] The invention relates to a test device for the driving range of the power assembly of an electric vehicle, and also relates to a test method of the test device. Background technique [0002] In recent years, under the vigorous promotion of national policies and market demand, the electric vehicle industry has developed rapidly. As a basic parameter information of electric vehicles, the driving range has always been an important basis for the majority of users to purchase electric vehicles. In order to ensure the accuracy of the driving range of electric vehicles, a special driving range test is required after the electric vehicle is assembled. At present, the test method for the driving range of electric vehicles stipulated in the national standard is based on the vehicle chassis dynamometer. [0003] However, when carrying out the mileage test on a fully assembled vehicle, if a fault occurs during the test or the mileage is insufficient, due to the l...

AI Technical Summary

Problems solved by technology

[0003] However, when carrying out the mileage test on a fully assembled vehicle, if a fault occurs during the test or the mileage is insufficient, due to the limitation of the vehicle space and other factors, the operations such as fault inspection and parts replacement will be abnormal. Difficult, heavy workload and long test period

Moreover, on the whole vehicle, there are no sensors between the transmission components, making it difficult to measure parameters such as output power and efficiency of the transmission components.

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