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Method and device for testing driving mileage of electric automobile

A cruising range and electric vehicle technology, applied in the automotive field, can solve problems affecting the cruising range of pure electric vehicles and achieve high safety effects

Active Publication Date: 2016-08-24
BEIJING ELECTRIC VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the curb quality affects the cruising range of pure electric vehicles, and reducing the curb quality becomes an important measure to improve the cruising range

Method used

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  • Method and device for testing driving mileage of electric automobile
  • Method and device for testing driving mileage of electric automobile
  • Method and device for testing driving mileage of electric automobile

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0037] Example 1: Query preset application parameters corresponding to different road surface conditions and different curb weights, and obtain the first road running resistance corresponding to the first curb weight according to the application parameters;

example 2

[0038] Example 2, the test parameters are obtained according to the preset running resistance calculation formula, and the first road running resistance corresponding to the first curb weight is obtained according to the test parameters.

[0039] Specifically, when an electric vehicle is running on the road, its external resistance is caused by the rolling resistance of the wheels, the friction of the wheel bearings and the action of the air, while when the electric vehicle is running on the chassis dynamometer, its external resistance is the rolling of the driving wheels Resistance, bearing friction and air friction, and bearing friction of the number of rotation components, etc. These resistances are much smaller than the external resistance encountered when driving on the road. air resistance and climbing resistance.

[0040] Therefore, in order to make the force on the chassis dynamometer of the electric vehicle basically the same as that on the road, it is necessary to set ...

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Abstract

The invention provides a method and a device for testing the driving mileage of an electric automobile. The method comprises the following steps: acquiring a first road driving resistance of a tested automobile, corresponding to a first curb weight; setting a first loading force of a chassis power tester according to the first road driving resistance and testing a first driving mileage corresponding to the first curb weight; acquiring a second road driving resistance of the tested automobile, corresponding to the second curb weight; setting a second loading force of the chassis power tester according to the second road driving resistance and testing a second driving mileage corresponding to the second curb weight; determining the influence coefficient of the curb weight of the tested automobile to the driving mileage according to the first driving mileage and the second driving mileage. According to the embodiment of the invention, the loading force of the chassis power tester can be adjusted for conveniently and accurately testing the influence of different curb weights on the driving mileage and the safety is high.

Description

technical field [0001] The present application relates to the technical field of automobiles, in particular to a method and device for testing the cruising range of electric vehicles. Background technique [0002] At present, due to the technical limitations of power batteries, the curb weight of pure electric vehicles of the same level is mostly higher than that of traditional fuel vehicles. [0003] However, the curb quality affects the cruising range of pure electric vehicles, and reducing the curb quality has become an important measure to improve the cruising range. Therefore, there is an urgent need for a test method for the impact on the cruising range of an electric vehicle after the weight of the whole vehicle is reduced. Contents of the invention [0004] The present application aims to solve one of the technical problems in the above-mentioned technologies at least to a certain extent. [0005] For this reason, the first purpose of this application is to propo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/007
CPCG01M17/007
Inventor 曹敏伟张凯马博吴杰伟
Owner BEIJING ELECTRIC VEHICLE
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