Unlock instant, AI-driven research and patent intelligence for your innovation.

Electric vehicle test system and test method

A test system and electric vehicle technology, applied in the field of electric vehicle bench testing, can solve problems such as unsatisfactory results and poor test authenticity, and achieve the effect of solving poor test authenticity

Inactive Publication Date: 2020-03-27
SPECIAL VEHICLE TECH CENT OF HUBEI AEROSPACE TECH RES INST
View PDF6 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present application provides a test system and test method for an electric vehicle, which solves the technical problems in the prior art that the test of the electric vehicle controller and the test of the drive motor are less authentic and the effect is not ideal

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electric vehicle test system and test method
  • Electric vehicle test system and test method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 As shown, the present embodiment provides an electric vehicle test system, including: a data acquisition system, a hardware-in-the-loop system 1, a vehicle controller 2, a dynamometer control system 3, a dynamometer 6, a motor controller 4, drive motor 5;

[0028] The hardware-in-the-loop system 1 is communicatively connected to the vehicle controller 2, and is used to send test instructions to the vehicle controller 2 in response to user instructions, and receive feedback from the vehicle controller 2 and the vehicle controller 2. The motor torque signal corresponding to the test command; the hardware-in-the-loop system 1 is also connected to the dynamometer control system 3 through communication, and is used to send a load to the dynamometer control system 3 according to the motor torque signal Speed ​​signal;

[0029] The vehicle controller 2 is communicatively connected to the motor controller 4, and is used to send the motor torque signal to the ...

Embodiment 2

[0057] Such as figure 2 As shown, this embodiment provides a test method for an electric vehicle test system, which is applied to the electric vehicle test system described in any one of the first embodiments, and is characterized in that it includes:

[0058] S101: Generate the test instruction in response to the user instruction through the hardware-in-the-loop system, and send the test instruction to the vehicle controller;

[0059] S102: Using the vehicle controller to generate the motor torque signal according to the test instruction, and send the motor torque signal to the motor controller and the hardware-in-the-loop system;

[0060] S103: Generate the load speed signal according to the motor torque signal through the hardware-in-the-loop system, and send the load speed signal to the dynamometer control system;

[0061] S104: Control the rotational speed of the dynamometer by the dynamometer control system according to the load rotational speed signal;

[0062] S105:...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an electric vehicle test system and test method. The electric vehicle test system comprises a data acquisition system, a hardware-in-loop system, a whole-vehicle control unit,a dynamometer control system, a dynamometer, a motor controller and a driving motor; the hardware-in-the-loop system is used for sending a test instruction to the vehicle control unit in response to auser instruction, receiving a motor torque signal fed back by the whole-vehicle control unit, and sending a load rotating speed signal to the dynamometer control system according to the motor torquesignal; the whole-vehicle control unit is used for sending a motor torque signal to the motor controller according to the test instruction; the motor controller is used for controlling the torque of the driving motor according to the motor torque signal; the dynamometer control system is used for controlling the rotating speed of the dynamometer according to the load rotating speed signal; the dynamometer is used for loading an output shaft of the driving motor; and the data acquisition system is used for acquiring a first operating parameter of the driving motor and transmitting the first operating parameter to the hardware-in-loop system for processing.

Description

technical field [0001] The invention relates to the technical field of electric vehicle bench testing, in particular to an electric vehicle test system and test method. Background technique [0002] In the prior art, hardware-in-the-loop testing mainly utilizes virtual models of controlled objects such as drive motors to simulate various input signals of the vehicle controller, thereby realizing hardware-in-the-loop testing of the vehicle controller. Due to the complex structure and high nonlinearity of the driving motor, it is difficult for the virtual model to achieve the same accuracy as the real one, and there are large deviations in the test results of the vehicle controller. The dynamometer bench mainly tests the conventional characteristics of the drive motor. Due to the lack of vehicle controller and vehicle information input, it is difficult to simulate the acceleration, deceleration and cycle test of the real vehicle, and the authenticity of the motor test results ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/007
CPCG01M17/007
Inventor 李从刚汤政鹏侯月明严东
Owner SPECIAL VEHICLE TECH CENT OF HUBEI AEROSPACE TECH RES INST