CN106124057B - Temperature rise on-line measuring system of electric vehicle power component - Google Patents
Temperature rise on-line measuring system of electric vehicle power component Download PDFInfo
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- CN106124057B CN106124057B CN201610446122.2A CN201610446122A CN106124057B CN 106124057 B CN106124057 B CN 106124057B CN 201610446122 A CN201610446122 A CN 201610446122A CN 106124057 B CN106124057 B CN 106124057B
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- 238000001514 detection method Methods 0.000 claims abstract description 31
- 238000012360 testing method Methods 0.000 claims abstract description 6
- 238000010586 diagram Methods 0.000 claims description 17
- 238000005259 measurement Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 11
- 238000007639 printing Methods 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
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- 238000004146 energy storage Methods 0.000 description 1
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- 238000010248 power generation Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0096—Radiation pyrometry, e.g. infrared or optical thermometry for measuring wires, electrical contacts or electronic systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/48—Thermography; Techniques using wholly visual means
- G01J5/485—Temperature profile
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J2005/0077—Imaging
Abstract
The invention relates to an online temperature rise measuring system for a power part of an electric vehicle, which comprises a vehicle chassis dynamometer, an online temperature measurer, an industrial computer and an axial flow fan used for simulating the wind speed generated by the vehicle speed when the electric vehicle runs, wherein the industrial computer is respectively connected with the vehicle chassis dynamometer, the online temperature measurer and the axial flow fan, the axial flow fan is arranged at the front end of the electric vehicle to be measured, the online temperature measurer is aligned with the power part of the electric vehicle to be measured, and the electric vehicle to be measured runs on the vehicle chassis dynamometer. Compared with the prior art, the invention has the advantages of high detection precision, intuitive embodiment, high automation degree, comprehensive test and the like.
Description
Technical Field
The invention relates to an electric vehicle measuring system, in particular to an online temperature rise measuring system for a power component of an electric vehicle.
Background
In order to protect the scenery spot environment and avoid the pollution of vehicle tail gas, the vehicle can use a battery to generate power, so that the environment is protected, no pollution is caused, and resources are effectively utilized. Most electric vehicles adopt a storage battery power supply driving mode, do not discharge harmful gas polluting the atmosphere, and can be used only by charging the storage battery. The electric vehicle can fully utilize surplus electric power in the night power utilization valley time to charge, so that power generation equipment of a power plant can be fully utilized day and night, and the electric vehicle is favorable for saving energy and reducing the emission of carbon dioxide.
The motor of the electric vehicle is one of the key components of the electric vehicle, the temperature rise change of the motor during operation is the comprehensive index reflection of the working state of the motor, the potential safety hazard can be effectively eliminated, and the driving safety is guaranteed.
The motor can cause temperature rise when in operation, the quality or the fault of the motor is evaluated by detecting the surface temperature of the motor, and the matching of the motor power and the vehicle use is analyzed.
The reason for causing the temperature rise when the motor runs is that the motor is designed and used, and materials, structures and the like are designed, so that how to carry out effective temperature rise detection on key components of the electric vehicle becomes a problem which needs to be solved urgently.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an online temperature rise measuring system for a power component of an electric vehicle.
The purpose of the invention can be realized by the following technical scheme:
the temperature rise on-line measuring system of the power component of the electric vehicle comprises a vehicle chassis dynamometer, an on-line temperature measurer, an industrial computer and an axial flow fan, wherein the axial flow fan is used for simulating the wind speed generated by the vehicle speed when the electric vehicle runs;
during testing, the vehicle chassis dynamometer loads power to the tested electric vehicle according to a set vehicle speed so as to measure temperature rise distribution and temperature rise time of the power component of the electric vehicle running under different loading powers and measure surface temperature change of the power component under different loads.
The power component of the tested electric vehicle comprises: the system comprises a driving motor, a power battery or a power energy storage component, wheels and a motor controller.
The axial flow fan is connected with the industrial computer through an anemoscope, and the anemoscope is connected with the industrial computer through an AD data acquisition card.
The vehicle chassis dynamometer is connected with an industrial computer through a serial port RS-232, the mode of selecting power measurement is constant power or constant torque or loading force, and loading torque quantity and vehicle speed are controlled during measurement.
The measuring system also comprises an environment temperature sensor connected with the industrial computer, and the environment temperature sensor is connected with the industrial computer through an AD data acquisition card;
firstly, setting detection parameters and modes on an industrial computer, and controlling the power of a loaded vehicle chassis dynamometer by the industrial computer; simultaneously controlling the wind speed of the axial flow fan, wherein the wind speed corresponds to the vehicle speed; measuring the surface temperature of a measured part of the electric vehicle by using an online temperature detector, after the temperature rise tends to be stable, collecting temperature distribution data of the online temperature detector by using an industrial computer to form a measured temperature distribution graph, collecting a corresponding temperature distribution graph under each loading power, and gradually increasing the loading power according to steps; obtaining a corresponding group of temperature distribution diagrams when the loading power of the tested electric vehicle changes from small to large; meanwhile, the ambient temperature measured by the ambient temperature sensor is used for correcting the data measured by the online temperature measurer so as to eliminate the influence of the ambient temperature on the detection result.
The online temperature detector is a thermal infrared imager.
The thermal infrared imager is connected with the industrial computer through a USB interface.
The industrial computer is connected with the axial flow fan through a frequency converter.
The functions of the industrial computer are as follows:
storing data and detection data results of the detected electric vehicle, setting detection parameters and modes, displaying a temperature distribution graph of the detection results and comparing the plurality of temperature distribution graphs, and designating special points in a group of temperature distribution graphs to convert into a temperature rise curve; setting detection parameters and a mode to ensure that the loading power of the vehicle chassis dynamometer is manually loaded or automatically loaded; when the power is automatically loaded, the initial loading power, the maximum loading power and the increment of the loading power measurement are set.
The industrial computer carries out further technical analysis on a group of temperature distribution diagrams obtained after detection to obtain display results in different modes, and provides visual criteria for the technical analysis, and the method specifically comprises the following steps:
a. representing the value range of the temperature according to the color, defining the color by user, obtaining a color distribution diagram to replace the temperature distribution diagram, and identifying the temperature by the color;
b. designating a point in a set of temperature profiles to be converted into a corresponding power-temperature rise curve graph;
c. comparing detection results, comparing and analyzing the measurement results obtained under different conditions, and displaying the comparison of the average temperature difference, the maximum and minimum temperature difference and a plurality of groups of temperature rise curves;
d. setting a warning point of the temperature, and giving an alarm or indicating with a specified color when the temperature exceeds the warning point;
e. displaying the maximum temperature rising rate in the whole measuring process;
f. and (4) detecting a curve and printing data.
Compared with the prior art, the invention has the following advantages:
1) The invention measures the temperature distribution diagram of the part in an on-line power loading mode, is a novel detection means, enables the heating degree to be described by data, can correctly know the heated state and the variation trend of the part during operation, effectively observes the operation quality and the reliability of the part to be detected, is a necessary detection tool for the design and the development of the electric vehicle, automatically controls the detection process by a computer, obtains complete results and is intuitive in analysis.
2) The invention has high automation degree and comprehensive test, is designed for detecting the heating degree of the power part of the electric vehicle in the running process, can comprehensively master the temperature rise process through detection, loads the relation between the vehicle running and the temperature, converts specified points in a group of temperature distribution graphs obtained through detection into a curve graph, automatically detects, has comprehensive measured data and can correctly master the temperature rise process of the tested part.
3) The results of the temperature rise change process curve and the temperature distribution diagram are measured, all heating components in the vehicle can be detected, the measured data accord with the actual use state, and the results have important basis for the quality analysis, design recommendation and fault analysis of the components, so that the quality and the technology of the electric vehicle are further improved.
Drawings
FIG. 1 is a block diagram of the present invention;
fig. 2 is a schematic structural diagram of the present invention.
Wherein 1-thermal infrared imager; 2-vehicle chassis dynamometer; 3-an industrial computer; 4-a frequency converter; 5-an axial flow fan; 6-ambient temperature sensor; 7-AD data acquisition card; 8-an anemometer; 9-control cabinet of the vehicle chassis dynamometer; 10-the electric vehicle under test.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, shall fall within the protection scope of the present invention.
As shown in fig. 1 and fig. 2, an online temperature rise measuring system for a power component of an electric vehicle comprises a vehicle chassis dynamometer 2, an online temperature measurer, an industrial computer 3 and an axial flow fan 5 for simulating a wind speed generated by a vehicle speed when the electric vehicle runs, wherein the industrial computer 3 is respectively connected with the vehicle chassis dynamometer 2, the online temperature measurer and the axial flow fan 5, the axial flow fan 5 is installed at the front end of a tested electric vehicle 10, the online temperature measurer is aligned with the power component of the tested electric vehicle, and the tested electric vehicle 10 runs on the vehicle chassis dynamometer 2; during testing, the vehicle chassis dynamometer loads power to the tested electric vehicle according to a set vehicle speed so as to measure temperature rise distribution and temperature rise time of the power component of the electric vehicle running under different loading powers and measure surface temperature change of the power component under different loads.
The power component of the tested electric vehicle comprises: the device comprises a driving motor, a power battery and a motor controller.
The axial flow fan 5 is connected with the industrial computer 3 through an anemoscope 8, and the anemoscope 8 is connected with the industrial computer 3 through an AD data acquisition card 7.
The vehicle chassis dynamometer 2 is controlled by a control cabinet 9 of the vehicle chassis dynamometer, a serial port RS-232 of the control cabinet 9 is connected with the industrial computer 3, a mode of measuring power is selected to be constant power or constant torque or loading force, and loading torque quantity and vehicle speed are controlled during measurement.
The measuring system also comprises an environment temperature sensor 6 connected with the industrial computer, and the environment temperature sensor 6 is connected with the industrial computer 3 through an AD data acquisition card 7;
firstly, setting detection parameters and modes on an industrial computer, and controlling the power of a loaded vehicle chassis dynamometer by the industrial computer; simultaneously controlling the wind speed of the axial flow fan, wherein the wind speed corresponds to the vehicle speed; measuring the surface temperature of a measured part of the electric vehicle by using an online temperature measurer, after the temperature rise tends to be stable, collecting temperature distribution data of the online temperature measurer by using an industrial computer to form a measured temperature distribution graph, collecting a corresponding temperature distribution graph under each loading power, and gradually increasing the loading power according to steps; obtaining a corresponding group of temperature distribution diagrams when the loading power of the tested electric vehicle changes from small to large; meanwhile, the ambient temperature measured by the ambient temperature sensor is used for correcting the data measured by the online temperature measurer so as to eliminate the influence of the ambient temperature on the detection result. The measured temperature rise distribution diagram is measured under the condition of different loading powers of the vehicle at a certain vehicle speed, so that the temperature distribution diagram of the loading force of the vehicle from small to large can be measured, and the temperature rise change of a measured component can be comprehensively mastered through measurement.
The on-line temperature detector is a thermal infrared imager 1. The thermal infrared imager 1 is connected with the industrial computer 3 through a USB interface. The industrial computer is connected with the axial flow fan through a frequency converter.
The functions of the industrial computer are as follows: storing data and detection data results of the detected electric vehicle, setting detection parameters and modes, displaying a temperature distribution graph of the detection results and comparing the plurality of temperature distribution graphs, and designating special points in a group of temperature distribution graphs to convert into a temperature rise curve; setting detection parameters and a mode to ensure that the loading power of the vehicle chassis dynamometer is manually loaded or automatically loaded; when the power is automatically loaded, the initial loading power, the maximum loading power and the increment of the loading power measurement are set.
The industrial computer carries out further technical analysis on a group of temperature distribution diagrams obtained after detection to obtain display results in different modes, and provides visual criteria for technical analysis, and the method specifically comprises the following steps: a. representing the value range of the temperature according to the color, defining the color by user, obtaining a color distribution diagram to replace the temperature distribution diagram, and identifying the temperature by the color; b. designating a point in a set of temperature distribution graphs to be converted into a corresponding power-temperature rise curve graph; c. comparing the detection results, comparing and analyzing the measurement results obtained under different conditions, and displaying the comparison of the average temperature difference, the maximum temperature difference, the minimum temperature difference and a plurality of groups of temperature rise curves; d. setting a warning point of the temperature, and giving an alarm or indicating with a specified color when the temperature exceeds the warning point; e. displaying the maximum temperature rise rate in the whole measuring process; f. detecting the curve and printing data.
While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. The temperature rise online measurement system of the power component of the electric vehicle is characterized by comprising a vehicle chassis dynamometer, an online temperature measurer, an industrial computer and an axial flow fan for simulating the wind speed generated by the speed of the electric vehicle during running, wherein the industrial computer is respectively connected with the vehicle chassis dynamometer, the online temperature measurer and the axial flow fan;
during testing, the vehicle chassis dynamometer loads power to the tested electric vehicle according to a set vehicle speed so as to measure temperature rise distribution and temperature rise time of a power component of the electric vehicle running under different loading powers and to measure surface temperature change of the power component under different loads;
the measuring system also comprises an environment temperature sensor connected with the industrial computer, and the environment temperature sensor is connected with the industrial computer through an AD data acquisition card;
firstly, setting detection parameters and modes on an industrial computer, and controlling the power of a loaded vehicle chassis dynamometer by the industrial computer; simultaneously controlling the wind speed of the axial flow fan, wherein the wind speed corresponds to the vehicle speed; measuring the surface temperature of a measured part of the electric vehicle by using an online temperature measurer, after the temperature rise tends to be stable, collecting temperature distribution data of the online temperature measurer by using an industrial computer to form a measured temperature distribution graph, collecting a corresponding temperature distribution graph under each loading power, and gradually increasing the loading power according to steps; thus obtaining a corresponding group of temperature distribution graphs when the loading power of the tested electric vehicle changes from small to large; meanwhile, the ambient temperature measured by the ambient temperature sensor is used for correcting the data measured by the online temperature measurer so as to eliminate the influence of the ambient temperature on the detection result;
the industrial computer carries out further technical analysis on a group of temperature distribution diagrams obtained after detection to obtain display results in different modes, and provides visual criteria for technical analysis, and the method specifically comprises the following steps:
a. representing the value range of the temperature according to the color, defining the color by user, obtaining a color distribution diagram to replace the temperature distribution diagram, and identifying the temperature by the color;
b. designating a point in a set of temperature distribution graphs to be converted into a corresponding power-temperature rise curve graph;
c. comparing detection results, comparing and analyzing the measurement results obtained under different conditions, and displaying the comparison of the average temperature difference, the maximum and minimum temperature difference and a plurality of groups of temperature rise curves;
d. setting a warning point of the temperature, and giving an alarm or indicating with a specified color when the temperature exceeds the warning point;
e. displaying the maximum temperature rise rate in the whole measuring process;
f. detecting the curve and printing data.
2. The system of claim 1, wherein the power unit of the electric vehicle comprises: the device comprises a driving motor, a power battery, wheels and a motor controller.
3. The system for measuring the temperature rise of the power component of the electric vehicle according to claim 1, wherein the axial flow fan is connected with an industrial computer through an anemometer, and the anemometer is connected with the industrial computer through an AD data acquisition card.
4. The system of claim 1, wherein the vehicle chassis dynamometer is connected to an industrial computer through a serial port RS-232, the power measurement mode is selected to be constant power, constant torque or loading force, and the loading torque and the vehicle speed are controlled during measurement.
5. The system of claim 1, wherein the online temperature detector is a thermal infrared imager.
6. The system of claim 5, wherein the thermal infrared imager is connected to the industrial computer through a USB interface.
7. The system for the on-line measurement of the temperature rise of the power component of the electric vehicle as recited in claim 1, wherein the industrial computer is connected to the axial flow fan through a frequency converter.
8. The system of claim 1, wherein the industrial computer functions as follows:
storing data and detection data results of the detected electric vehicle, setting detection parameters and modes, displaying a temperature distribution graph of the detection results and comparing the temperature distribution graphs with a plurality of temperature distribution graphs, and designating special points in a group of temperature distribution graphs to convert into temperature rise curves; setting detection parameters and a mode to ensure that the loading power of the vehicle chassis dynamometer is manually loaded or automatically loaded; when the power is automatically loaded, the initial loading power, the maximum loading power and the increment of the loading power measurement are set.
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| CN201610446122.2A CN106124057B (en) | 2016-06-20 | 2016-06-20 | Temperature rise on-line measuring system of electric vehicle power component |
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| CN201610446122.2A CN106124057B (en) | 2016-06-20 | 2016-06-20 | Temperature rise on-line measuring system of electric vehicle power component |
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| CN113138083A (en) * | 2021-03-25 | 2021-07-20 | 西安法士特汽车传动有限公司 | Test system and test method for whole vehicle hub and power assembly |
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| EP1048944A2 (en) * | 1999-04-28 | 2000-11-02 | Horiba, Ltd. | Engine testing apparatus |
| CN203275603U (en) * | 2013-04-24 | 2013-11-06 | 联合汽车电子有限公司 | Motor endurance test system |
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| KR101600316B1 (en) * | 2014-12-12 | 2016-03-21 | 옵토파워주식회사 | Apparatus for diagnosing a switchboard with electromagnetic waves and temperature and method using the same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4572907B2 (en) * | 2007-03-29 | 2010-11-04 | トヨタ自動車株式会社 | Motor control device, control method, and control program |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1048944A2 (en) * | 1999-04-28 | 2000-11-02 | Horiba, Ltd. | Engine testing apparatus |
| CN203275603U (en) * | 2013-04-24 | 2013-11-06 | 联合汽车电子有限公司 | Motor endurance test system |
| KR101600316B1 (en) * | 2014-12-12 | 2016-03-21 | 옵토파워주식회사 | Apparatus for diagnosing a switchboard with electromagnetic waves and temperature and method using the same |
| CN204903728U (en) * | 2015-08-26 | 2015-12-23 | 中国石油集团渤海钻探工程有限公司 | Take load motor testing arrangement among broad width temperature environment |
Non-Patent Citations (1)
| Title |
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| 《交流电力测功机控制系统的研究》;田颖等;《汽车工程》;20140126;第125-128页 * |
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