CN108333523A - A kind of electric automobile power battery test device and test method - Google Patents
A kind of electric automobile power battery test device and test method Download PDFInfo
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- CN108333523A CN108333523A CN201810062347.7A CN201810062347A CN108333523A CN 108333523 A CN108333523 A CN 108333523A CN 201810062347 A CN201810062347 A CN 201810062347A CN 108333523 A CN108333523 A CN 108333523A
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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
- G01R31/005—Testing of electric installations on transport means
- G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
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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
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
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- Engineering & Computer Science (AREA)
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Abstract
The present invention relates to a kind of electric automobile power battery test device and test method, include for acquiring the electrokinetic cell signal acquisition module of tested power battery dbjective state amount information, the electrokinetic cell signal processing module for handling tested power battery dbjective state amount information, the power battery management system module for controlling tested power battery input/output state, the vehicle equivalent moment of inertia analog module for simulating electric vehicle actual condition and the motor control module for controlling driving motor operating status；The present invention compensates for the drawbacks of traditional power test platform, can be respectively completed the dynamic property and static properties of tested motor or power battery.
Description
Technical field
The present invention relates to a kind of electric automobile power battery test device and test methods, belong to electric automobile power battery
Technical field of measurement and test.
Background technology
At this stage, energy shortage and environment increasingly deterioration problem have become global problem, are asked to alleviate these
Topic, world community are all actively studying various countermeasures, wherein the more energy-saving ring of major motor corporation input substantial contribution research and development
The New-energy electric vehicle of guarantor undoubtedly allows it is seen that dawn；Pure electric automobile technology is《Made in China 2025》In carry
Go out one of the theme to be first developed, the environmental protection such as low emission or even zero-emission, low heat emission, low noise may be implemented in pure electric automobile
The characteristics of, therefore, the occupation rate of market of pure electric automobile is also increasing year by year.
Power battery, driving motor, electrical control are the three big component parts for constituting power system of electric automobile, however,
Compared to traditional fuel-engined vehicle, the technology of electric vehicle is still immature, and there are the defects of itself；Course continuation mileage is short, charging is slow,
The problems such as charging is difficult can be described as restricting the most key some factors of electric vehicle fast development；And it is more than electric vehicle several
Point disadvantage is exactly all closely related with the performance of the power battery of automobile, the economy of automobile, safety, dynamic property all with power
Battery is closely bound up；So to fundamentally solve these defects, it is necessary to be fully understood to the performance of power battery；Battery
Aspect mainly has：The ratio energy of battery is relatively low, cycle life is limited, the quality of battery pack is excessive, continuation of the journey
Mileage is limited etc.；Under the technology of existing power battery, if can proper use of power battery, power electric can be maximized
The value in pond.Want there is comprehensive performance to understand power battery, best mode is under electric automobile work condition traveling to dynamic
The relevant parameter of power battery carries out their changing rule under test record, however electric vehicle total system is excessively complicated,
When to battery testing, measured signal is inevitably interfered by other various signals of communication on vehicle, therefore is difficult accurate
Ground detects every truthful data of power battery.
Power battery is core as the power resources of electric vehicle, and the dynamic property of electric vehicle directly depends on dynamic
The quality of power battery performance, so global researcher has been devoted to the research and development of power battery all the time.Inspection
Test is as the important ring in power battery development process, and importance is self-evident, so to each seed ginseng of power battery
The test of number performance is essential.
Invention content
It is flat to compensate for traditional power test for a kind of electric automobile power battery test device of present invention offer and test method
The drawbacks of platform, can be respectively completed the dynamic property and static properties of tested motor or power battery.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of electric automobile power battery test device includes the power for acquiring tested power battery dbjective state amount information
Battery testing signal acquisition module, the electrokinetic cell signal processing for handling tested power battery dbjective state amount information
Module, the power battery management system module for controlling tested power battery input/output state, for simulating electric vehicle
The vehicle equivalent moment of inertia analog module of actual condition and for control driving motor operating status driving motor control
Module；
Wherein, power battery management system module is simultaneously to motor control module, electrokinetic cell signal acquisition module
Signal transmission is carried out, motor control module is connected with vehicle equivalent moment of inertia analog module simultaneously, equivalent turn of vehicle
Dynamic inertia simulation module carries out signal transmission, electrokinetic cell signal acquisition module to electrokinetic cell signal processing module
Signal transmission is carried out to electrokinetic cell signal processing module；
As present invention further optimization,
Electrokinetic cell signal acquisition module above-mentioned include testing current unit, voltage tester unit, temperature test unit,
Battery cell voltage tester unit, torque sensor and speed probe；
Electrokinetic cell signal processing module above-mentioned includes main control unit and industrial personal computer, and wherein main control unit includes main control
Device, isolation element, photoelectrical coupler, amplifier；
Power battery management system module above-mentioned includes power battery and battery management system；
Vehicle equivalent moment of inertia analog module above-mentioned includes dynamometer machine unit and flywheel group unit, wherein dynamometer machine unit packet
Include electric A.C. dynamometer, four-quadrant frequency-variable controller, Dynamometer Control device and dynamometer machine cooling system；Flywheel group unit includes
Flywheel group, flywheel group controller, shaft coupling and rack；
Motor control module above-mentioned includes driving motor and electric machine controller；
As present invention further optimization,
Testing current unit above-mentioned includes Hall sensor, amplifier, voltage-stablizer and A/D digital-to-analogue converters；
Voltage tester unit above-mentioned includes V/F converters, multiway analog switch, photoisolator and transformer；
Temperature test unit above-mentioned includes temperature-sensitive element and heat conducting element；
Battery cell voltage tester unit above-mentioned includes difference amplifier, window comparator and A/D digital-to-analogue converters；
As present invention further optimization,
Electrokinetic cell signal acquisition module above-mentioned is for acquiring tested power battery dbjective state amount information comprising drives
Dynamic motor torque, driving motor rotating speed, tested battery current, tested cell voltage and tested battery cell voltage；
Electrokinetic cell signal processing module above-mentioned is for handling tested power battery dbjective state amount information comprising drives
Dynamic motor torque, driving motor rotating speed, tested battery current, tested cell voltage, tested battery cell voltage；
A kind of test method of electric automobile power battery, includes the following steps：
The first step, simulating vehicle actual condition, vehicle equivalent moment of inertia analog module provide load resistance square and hinder driving electricity
The rotation of machine, to simulate electric vehicle actual condition；
Second step acquires battery testing signal, according to the rate curve of reference and the vehicle actual condition information tune simulated
The operating status of section electric automobile power cell test device, vehicle equivalent moment of inertia analog module carry out driving motor operation
The simulated resistance of rotating speed and dynamometer machine；
Third walks, and processing shows that measured parameter, electrokinetic cell signal acquisition module acquire electrokinetic cell signal, wherein
For the voltage that battery pack measures after decompression processing, voltage signal is input to V/F converters, and the frequency signal of generation passes through light
Electric isolator is transmitted to multiway analog switch, then passes to electric machine controller and handled；By Hall sensor tested
Larger current is converted into after weak current and signal is transmitted to A/D digital-to-analogue converters using amplifier, voltage-stablizer；Utilize temperature-sensitive element
It is in direct contact with tested battery, the temperature of tested battery is measured by the heat exchange being in direct contact with tested battery；Tested battery
The voltage at monomer both ends is linked into multiway analog switch, has respectively entered difference amplifier and window comparator later, obtains
Voltage signal is compared with the Vref of the setting of window comparator, if voltage value is in the range of Vref settings, voltage signal
It is measured into A/D converters, if the two differs greatly, the difference of the two is input to electric machine controller, and electric machine controller calculates
Going out the regulated values of needs and by D/A converter being transmitted to adjustment floating ground adjustment circuit and change the numerical value of reference potential finally makes survey
Magnitude is in VrefIn range；
4th step, regulating device operating status adjust electricity according to the rate curve of reference and the road condition information simulated
The operating status of electrical automobile testing device for power cells；
5th step, repeats the above steps, until entire electrokinetic cell process terminates；
As present invention further optimization,
First step simulating vehicle actual condition above-mentioned, is further subdivided into following steps：
The inertia that vehicle equivalent moment of inertia analog module passes through flywheel group unit simulation vehicle；
Vehicle equivalent moment of inertia analog module passes through its residual resistance of dynamometer machine unit simulation vehicle.
By above technical scheme, compared with the existing technology, the invention has the advantages that：
The present invention is sufficiently complex in view of electric automobile work condition, non-linear, the multifactor feature of test-bed, is difficult accurate in addition
The a series of problem such as the inertia of simulation vehicle, designed test device can realize dynamic load, can be to power electric
The dynamic operating conditions in pond are tested, and have enough robustness and certain overload capacity, ensure test platform energy
Enough smoothly to run, this is also the meaning of this test device；
During designing test device, for from road surface during electric automobile during traveling frictional resistance, air drag,
The acceleration resistance of grade resistance and vehicle is by using flywheel group and the common simulated implementation of electric A.C. dynamometer；The application
It considers and utilizes dynamometer machine and the common fictitious load of flywheel group, wherein the equivalent moment of inertia of flywheel group simulation electric vehicle, remain
Realize that effect is more preferable by way of the combination of dynamometer machine plus flywheel group, and system is more stable by dynamometer machine in remaining part；For
The control of driving motor, according to reference velocity curve, the physical model according to test platform obtains required rotating speed, to motor
Control to aspire for stability, quickly, ensure driving motor can safely work under certain overload situations；
Research and development electric automobile power battery test platform means a great, and can be preferably applied to research and analyse electric vehicle and move
The performance of power battery solves the problems, such as limitation power battery development；Currently, the research for power battery is abundant not enough, move
Various chemical reactions are affected by environment when the inside charge and discharge of power battery, and true circuit model is sufficiently complex, it is desirable to
It is accurate to construct that battery model is very difficult, and Computer Simulation effect is not satisfactory enough；Side based on test platform experiment
Formula can be effectively by testing the performance of the power battery mutation analysis power battery of parameters in actual work, this test
The main innovative point of device and method is to test the test of the simple relevant parameter to power battery and traditional power flat
Platform is combined the test of motor or engine power performance, and creative designs by making tested power battery to tradition
Driving motor supply of electrical energy on test platform, while allowing dynamometer machine according to electric automobile work condition load running, simulate electric vehicle
Real-road Driving Cycle, tests the consumption of power battery and each performance parameter index.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is that the power battery of the present invention simulates the overall structure figure of electric vehicle real-time working condition test device；
Fig. 2 is that the power battery of the present invention simulates the flow chart of electric vehicle real-time working condition test method.
Specific implementation mode
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates the basic structure of the present invention, therefore it only shows the composition relevant to the invention.
The only test and appraisal to power battery static properties mostly of current existing test system, however only to static properties
Test and appraisal be difficult to meet the needs of people because in vehicle actual motion, the speed of vehicle, power of driving motor etc. are all real
Shi Biandong's, merely test motor or the static properties of a certain item index of engine can not comprehensively react its synthesis
Ability；Therefore, a good electrokinetic cell platform must have remarkable sound state load test ability, can be complete respectively
At the dynamic property and static properties of tested motor or power battery；In order to make up the disadvantage of traditional power test platform
End, the present invention devise novel electric automobile power battery test device and test method.
As shown in Figure 1, a kind of electric automobile power battery test device of the present invention, including it is used to acquire tested power electric
The electrokinetic cell signal acquisition module of pond dbjective state amount information, for handling tested power battery dbjective state amount information
Electrokinetic cell signal processing module, the power battery management system for controlling tested power battery input/output state
Module, the vehicle equivalent moment of inertia analog module for simulating electric vehicle actual condition and for control driving motor fortune
The motor control module of row state；
Wherein, power battery management system module is simultaneously to motor control module, electrokinetic cell signal acquisition module
Signal transmission is carried out, motor control module is connected with vehicle equivalent moment of inertia analog module simultaneously, equivalent turn of vehicle
Dynamic inertia simulation module carries out signal transmission, electrokinetic cell signal acquisition module to electrokinetic cell signal processing module
Signal transmission is carried out to electrokinetic cell signal processing module；
As present invention further optimization,
Electrokinetic cell signal acquisition module above-mentioned include testing current unit, voltage tester unit, temperature test unit,
Battery cell voltage tester unit, torque sensor and speed probe；
Electrokinetic cell signal processing module above-mentioned includes main control unit and industrial personal computer, and wherein main control unit includes main control
Device, isolation element, photoelectrical coupler, amplifier；
Power battery management system module above-mentioned includes power battery and battery management system；
Vehicle equivalent moment of inertia analog module above-mentioned includes dynamometer machine unit and flywheel group unit, wherein dynamometer machine unit packet
Include electric A.C. dynamometer, four-quadrant frequency-variable controller, Dynamometer Control device and dynamometer machine cooling system；Flywheel group unit includes
Flywheel group, flywheel group controller, shaft coupling and rack；
Motor control module above-mentioned includes driving motor and electric machine controller；
As present invention further optimization,
Testing current unit above-mentioned includes Hall sensor, amplifier, voltage-stablizer and A/D digital-to-analogue converters；
Voltage tester unit above-mentioned includes V/F converters, multiway analog switch, photoisolator and transformer；
Temperature test unit above-mentioned includes temperature-sensitive element and heat conducting element；
Battery cell voltage tester unit above-mentioned includes difference amplifier, window comparator and A/D digital-to-analogue converters；
As present invention further optimization,
Electrokinetic cell signal acquisition module above-mentioned is for acquiring tested power battery dbjective state amount information comprising drives
Dynamic motor torque, driving motor rotating speed, tested battery current, tested cell voltage and tested battery cell voltage；
Electrokinetic cell signal processing module above-mentioned is for handling tested power battery dbjective state amount information comprising drives
Dynamic motor torque, driving motor rotating speed, tested battery current, tested cell voltage, tested battery cell voltage；
Shown in Fig. 2, a kind of test method of electric automobile power battery includes the following steps：
The first step, simulating vehicle actual condition, vehicle equivalent moment of inertia analog module provide load resistance square and hinder driving electricity
The rotation of machine, to simulate electric vehicle actual condition；
Second step acquires battery testing signal, according to the rate curve of reference and the vehicle actual condition information tune simulated
The operating status of section electric automobile power cell test device, vehicle equivalent moment of inertia analog module carry out driving motor operation
The simulated resistance of rotating speed and dynamometer machine；
Third walks, and processing shows that measured parameter, electrokinetic cell signal acquisition module acquire electrokinetic cell signal, wherein
For the voltage that battery pack measures after decompression processing, voltage signal is input to V/F converters, and the frequency signal of generation passes through light
Electric isolator is transmitted to multiway analog switch, then passes to electric machine controller and handled；By Hall sensor tested
Larger current is converted into after weak current and signal is transmitted to A/D digital-to-analogue converters using amplifier, voltage-stablizer；Utilize temperature-sensitive element
It is in direct contact with tested battery, the temperature of tested battery is measured by the heat exchange being in direct contact with tested battery；Tested battery
The voltage at monomer both ends is linked into multiway analog switch, has respectively entered difference amplifier and window comparator later, obtains
The V of the setting of voltage signal and window comparatorrefCompare, if voltage value be in Vref setting in the range of, voltage signal into
Enter the measurement of A/D converters, if the two differs greatly, the difference of the two is input to electric machine controller, and electric machine controller calculates
The numerical value that the regulated value needed is transmitted to adjustment floating ground adjustment circuit change reference potential by D/A converter finally makes measurement
Value is in VrefIn range；
4th step, regulating device operating status adjust electricity according to the rate curve of reference and the road condition information simulated
The operating status of electrical automobile testing device for power cells；
5th step, repeats the above steps, until entire electrokinetic cell process terminates；
As present invention further optimization,
First step simulating vehicle actual condition above-mentioned, is further subdivided into following steps：
The inertia that vehicle equivalent moment of inertia analog module passes through flywheel group unit simulation vehicle；
Vehicle equivalent moment of inertia analog module passes through its residual resistance of dynamometer machine unit simulation vehicle.
In a particular embodiment, flywheel group and dynamometer machine hinder the rotation of driving motor as load resistance square, wherein flying
The inertia of simulating vehicle is taken turns, its residual resistance of dynamometer machine simulating vehicle, the driving cycle simulation test of electric vehicle is to design
Test platform on realize, industrial personal computer control monitors and shows the change curve sum number of each measured parameter on test platform
Value, information collection and communication system get the tach signal of driving motor by speed probe, are adopted by torque sensor
Collect the torque signal of dynamometer machine, and by the main control unit of their real-time deliveries to test platform, according to the rate curve of reference
And the road condition information simulated adjusts the simulated resistance of the driving motor running speed and dynamometer machine of test platform.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein（Including technology art
Language and scientific terminology）With meaning identical with the general understanding of the those of ordinary skill in the application fields.Should also
Understand, those terms such as defined in the general dictionary, which should be understood that, to be had and the meaning in the context of the prior art
The consistent meaning of justice, and unless defined as here, will not be with idealizing or the meaning of too formal be explained.
The meaning of "and/or" described herein refers to that the case where respective individualism or both exists simultaneously wraps
Including including.
The meaning of " connection " described herein can be directly connected to can also be to pass through between component between component
Other components are indirectly connected with.
It is enlightenment with above-mentioned desirable embodiment according to the present invention, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to determine its technical scope according to right.
Claims (6)
1. a kind of electric automobile power battery test device, it is characterised in that：Including being used to acquire tested power battery target-like
The electrokinetic cell signal acquisition module of state amount information, the power electric for handling tested power battery dbjective state amount information
Pond testing signal process module, is used the power battery management system module for controlling tested power battery input/output state
In the vehicle equivalent moment of inertia analog module of simulation electric vehicle actual condition and for controlling driving motor operating status
Motor control module；
Wherein, power battery management system module is simultaneously to motor control module, electrokinetic cell signal acquisition module
Signal transmission is carried out, motor control module is connected with vehicle equivalent moment of inertia analog module simultaneously, equivalent turn of vehicle
Dynamic inertia simulation module carries out signal transmission, electrokinetic cell signal acquisition module to electrokinetic cell signal processing module
Signal transmission is carried out to electrokinetic cell signal processing module.
2. electric automobile power battery test device according to claim 1, it is characterised in that：
Electrokinetic cell signal acquisition module above-mentioned include testing current unit, voltage tester unit, temperature test unit,
Battery cell voltage tester unit, torque sensor and speed probe；
Electrokinetic cell signal processing module above-mentioned includes main control unit and industrial personal computer, and wherein main control unit includes main control
Device, isolation element, photoelectrical coupler, amplifier；
Power battery management system module above-mentioned includes power battery and battery management system；
Vehicle equivalent moment of inertia analog module above-mentioned includes dynamometer machine unit and flywheel group unit, wherein dynamometer machine unit packet
Include electric A.C. dynamometer, four-quadrant frequency-variable controller, Dynamometer Control device and dynamometer machine cooling system；Flywheel group unit includes
Flywheel group, flywheel group controller, shaft coupling and rack；
Motor control module above-mentioned includes driving motor and electric machine controller.
3. electric automobile power battery test device according to claim 1, it is characterised in that：
Testing current unit above-mentioned includes Hall sensor, amplifier, voltage-stablizer and A/D digital-to-analogue converters；
Voltage tester unit above-mentioned includes V/F converters, multiway analog switch, photoisolator and transformer；
Temperature test unit above-mentioned includes temperature-sensitive element and heat conducting element；
Battery cell voltage tester unit above-mentioned includes difference amplifier, window comparator and A/D digital-to-analogue converters.
4. electric automobile power battery test device according to claim 1, which is characterized in that
Electrokinetic cell signal acquisition module above-mentioned is for acquiring tested power battery dbjective state amount information comprising drives
Dynamic motor torque, driving motor rotating speed, tested battery current, tested cell voltage and tested battery cell voltage；
Electrokinetic cell signal processing module above-mentioned is for handling tested power battery dbjective state amount information comprising drives
Dynamic motor torque, driving motor rotating speed, tested battery current, tested cell voltage, tested battery cell voltage.
5. a kind of test method of electric automobile power battery, it is characterised in that：Include the following steps：
The first step, simulating vehicle actual condition, vehicle equivalent moment of inertia analog module provide load resistance square and hinder driving electricity
The rotation of machine, to simulate electric vehicle actual condition；
Second step acquires battery testing signal, according to the rate curve of reference and the vehicle actual condition information tune simulated
The operating status of section electric automobile power cell test device, vehicle equivalent moment of inertia analog module carry out driving motor operation
The simulated resistance of rotating speed and dynamometer machine；
Third walks, and processing shows that measured parameter, electrokinetic cell signal acquisition module acquire electrokinetic cell signal, wherein
For the voltage that battery pack measures after decompression processing, voltage signal is input to V/F converters, and the frequency signal of generation passes through light
Electric isolator is transmitted to multiway analog switch, then passes to electric machine controller and handled；By Hall sensor tested
Larger current is converted into after weak current and signal is transmitted to A/D digital-to-analogue converters using amplifier, voltage-stablizer；Utilize temperature-sensitive element
It is in direct contact with tested battery, the temperature of tested battery is measured by the heat exchange being in direct contact with tested battery；Tested battery
The voltage at monomer both ends is linked into multiway analog switch, has respectively entered difference amplifier and window comparator later, obtains
Voltage signal is compared with the Vref of the setting of window comparator, if voltage value is in the range of Vref settings, voltage signal
It is measured into A/D converters, if the two differs greatly, the difference of the two is input to electric machine controller, and electric machine controller calculates
Going out the regulated values of needs and by D/A converter being transmitted to adjustment floating ground adjustment circuit and change the numerical value of reference potential finally makes survey
Magnitude is within the scope of Vref；
4th step, regulating device operating status adjust electricity according to the rate curve of reference and the road condition information simulated
The operating status of electrical automobile testing device for power cells；
5th step, repeats the above steps, until entire electrokinetic cell process terminates.
6. electric automobile power battery test method according to claim 5, which is characterized in that first step simulation above-mentioned
Vehicle actual condition, is further subdivided into following steps：
The inertia that vehicle equivalent moment of inertia analog module passes through flywheel group unit simulation vehicle；
Vehicle equivalent moment of inertia analog module passes through its residual resistance of dynamometer machine unit simulation vehicle.
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| CN112014052A (en) * | 2020-07-30 | 2020-12-01 | 中国汽车技术研究中心有限公司 | Method for checking safety of electric vehicle with power battery rapidly replaced |
| CN115586447A (en) * | 2022-12-13 | 2023-01-10 | 中北润良新能源(济宁)股份有限公司 | Ship power battery detection equipment and system |
| CN115586447B (en) * | 2022-12-13 | 2023-04-07 | 中北润良新能源(济宁)股份有限公司 | Ship power battery detection equipment and system |
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