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A dual-motor electric tractor test bench and its test control method

A control method and tractor technology, applied in the testing of machine/structural components, vehicle testing, instruments, etc., can solve problems such as the inability to develop and use electric tractors, and lack of related equipment for power output shafts

Active Publication Date: 2020-03-17
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional tractor test bench is based on the engine as the power system, which cannot be used for the development and use of electric tractors
The working conditions of electric tractors and electric vehicles are very different. Electric tractors need to complete plowing, rotary tillage and other operating conditions, and the electric vehicle test bench does not have power output shaft related equipment

Method used

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  • A dual-motor electric tractor test bench and its test control method
  • A dual-motor electric tractor test bench and its test control method
  • A dual-motor electric tractor test bench and its test control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] refer to figure 1 , a dual-motor electric tractor test bench, including a battery simulator 2 capable of detecting the discharge characteristics of the power battery pack 1 and simulating the discharge characteristics of the power battery pack 1 for external power supply. The battery simulator 2 sequentially passes through the relay K3 and the relay K 4 (i.e. the battery pack switch) is connected with the power battery pack 1;

[0025] The test bench also includes a drive motor controller 3 for controlling the working state of the drive motor 4, and the drive motor controller 3 sequentially passes through the relay K 1 and relay K 4 Connect with power battery pack 1; drive motor controller 3 through relay K in turn 1 and relay K 3Connect with battery simulator 2; Described test stand also comprises the first rotational speed torque sensor 5 and transfer case 14, first load motor 6, clutch 8 (test When the clutch 8 is engaged), the gearbox 10, the wheels 11, the doub...

Embodiment 2

[0028] refer to figure 2 And table 1, table 2, as the test control method of dual-motor electric tractor test bench described in embodiment 1, by the upper computer by logic gate circuit recognition instruction symbol, control test bench is with the corresponding test pattern work of instruction symbol, upper computer with A certain step size controls the output torque of the corresponding load, and at the same time collects the working information of the test element to judge whether the test element has reached the working condition, so as to determine whether to adjust the load working condition; the instruction symbol is composed of five logical numbers, from the lowest to the highest The bits respectively correspond to the working states of the five test modes of power battery pack test mode, drive motor test mode, drive system test mode, power output shaft test mode and complete machine test mode, and each bit can be "0" or "1". ", the host computer starts to recognize ...

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Abstract

The invention relates to a double-motor electric tractor test bed and a test control method thereof. An instruction symbol is recognized by the upper computer through a logic gate circuit, and the test bed is controlled to work in a test mode corresponding to the instruction character, the test mode of the test bed comprises a power battery pack test mode, a driving motor test mode, a drive systemtest mode, a power output shaft test mode and a complete machine test mode. According to the double-motor electric tractor test bed provided by the invention, test analysis can be carried out on different modules of the developed electric tractor, great significance is achieved for the development of the electric tractor; the invention further provides a control method of different modes, the test mode of the test bed is controlled through the upper computer identification instruction symbol, and automatic control of the test process is realized.

Description

technical field [0001] The invention relates to the technical field of vehicle development, in particular to the development of a dual-motor electric tractor. Background technique [0002] With the decrease of petroleum resources and the serious impact of the use of petroleum resources on the environment, energy conservation and environmental protection have become issues that need to be faced worldwide. At the same time, due to the continuous increase in the number of vehicles in the world, the development of new energy vehicles has profound significance for solving energy-saving and environmental protection issues. New energy vehicles refer to the development of new energy forms to replace oil, so as to fundamentally solve the problems caused by oil consumption. At present, research and development at home and abroad are mainly focused on using lithium batteries as a new energy source to replace petroleum energy. Lithium batteries have the advantages of high energy densi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M17/007
CPCG01M17/007
Inventor 徐立友赵学平刘孟楠周志立赵思夏李忠利倪倩
Owner HENAN UNIV OF SCI & TECH