CN106198044B - Electric automobile endurance mileage testing method and device - Google Patents
Electric automobile endurance mileage testing method and device Download PDFInfo
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- CN106198044B CN106198044B CN201610480322.XA CN201610480322A CN106198044B CN 106198044 B CN106198044 B CN 106198044B CN 201610480322 A CN201610480322 A CN 201610480322A CN 106198044 B CN106198044 B CN 106198044B
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Abstract
The application provides a method and a device for testing the endurance mileage of an electric automobile, wherein the method comprises the following steps: acquiring a first road running resistance corresponding to the first rolling resistance coefficient and the detected vehicle; setting a first loading force of the chassis dynamometer according to the first road running resistance, and testing a first endurance mileage corresponding to a first rolling resistance coefficient; acquiring a second road running resistance corresponding to the second rolling resistance coefficient and the detected vehicle; setting a second loading force of the chassis dynamometer according to the second road running resistance, and testing a second endurance mileage corresponding to the second rolling resistance coefficient; and determining the influence coefficient of the rolling resistance coefficient of the detected vehicle on the endurance mileage according to the first endurance mileage and the second endurance mileage. According to the embodiment of the application, the loading force of the chassis dynamometer is adjusted, the influence of different rolling resistance coefficients on the endurance mileage is conveniently and accurately tested, and the safety is high.
Description
Technical field
This application involves automobile technical field more particularly to a kind of electric car course continuation mileage test method and devices.
Background technique
Currently, electric car is more more and more universal, electric car course continuation mileage is the major criterion that user selects electric car.
However, the course continuation mileage of rolling resistance index impacts pure electric automobile, reduction rolling resistance coefficient, which becomes, promotes course continuation mileage
A kind of important measure.Therefore, the test method influenced after a kind of complete vehicle quality mitigation of electric car on course continuation mileage is needed.
Summary of the invention
The application is intended to solve one of the technical problem in above-mentioned technology at least to a certain extent.
For this purpose, first purpose of the application is to propose that a kind of electric car course continuation mileage test method, this method are logical
The loading force of chassis dynamometer is overregulated, realizes the convenient influence for accurately testing different rolling resistance coefficients to course continuation mileage, safety
Property it is high.
Second purpose of the application is to propose a kind of electric car course continuation mileage test device.
In order to achieve the above object, the application first aspect embodiment proposes a kind of electric car course continuation mileage test method,
It include: to obtain tested vehicle the first road running resistance corresponding with the first rolling resistance coefficient；It is hindered according to first road driving
The first loading force of chassis dynamometer is arranged in power, and tests the first course continuation mileage corresponding with the first rolling resistance coefficient；It obtains
Tested vehicle the second road running resistance corresponding with the second rolling resistance coefficient；According to second road running resistance, chassis is set
Second loading force of dynamometer machine, and test the second course continuation mileage corresponding with the second rolling resistance coefficient；It is continuous according to described first
Boat mileage and second course continuation mileage determine influence coefficient of the rolling resistance coefficient of the tested vehicle to course continuation mileage.
The electric car course continuation mileage test method of the embodiment of the present application obtains being measured vehicle and the first rolling resistance system first
Corresponding first road running resistance of number, the first loading force of chassis dynamometer is arranged then according to the first road running resistance,
And test with the first corresponding first course continuation mileage of rolling resistance coefficient, then obtain being measured vehicle and rolled with second and hinder coefficient corresponding the
Two road running resistances then according to the second loading force of the second road running resistance setting chassis dynamometer, and are tested and the
Corresponding second course continuation mileage of two rolling resistance coefficients.Tested vehicle is finally determined according to the first course continuation mileage and the second course continuation mileage
Influence coefficient of the rolling resistance coefficient to course continuation mileage.This method is realized convenient accurate by the loading force of adjusting chassis dynamometer
Influence of the different rolling resistance coefficients to course continuation mileage is tested, it is highly-safe.
In addition, can also be had according to the electric car course continuation mileage test method of the above embodiments of the present application following additional
Technical characteristic:
In some instances, the acquisition tested vehicle the first road running resistance corresponding with the first rolling resistance coefficient, packet
It includes: obtaining test parameter, wherein the test parameter includes: the whole of air resistance coefficient, front face area and the tested vehicle
Standby quality and speed；Calculation processing is carried out to the first rolling resistance coefficient and the test parameter using preset formula, obtains institute
State the first road running resistance.
In some instances, the acquisition tested vehicle the second road running resistance corresponding with the second rolling resistance coefficient, packet
It includes: calculation processing being carried out to the second rolling resistance coefficient and the test parameter using preset formula, obtains second road
Running resistance.
In some instances, the preset formula includes:
Wherein, f0For coefficient of rolling resistance constant, f1For rolling resistance coefficient of first order, m is kerb weight, and v is the speed of tested vehicle, g
For acceleration of gravity, CdFor air resistance coefficient, A is front face area.
In some instances, in first loading force that chassis dynamometer is arranged according to first road running resistance
Before, further includes: environmental chamber temperature is adjusted according to testing requirement.
In order to achieve the above object, the application second aspect embodiment proposes a kind of electric car course continuation mileage test device,
It include: acquisition module, for obtaining tested vehicle the first road running resistance corresponding with the first rolling resistance coefficient；Processing module,
For the first loading force of chassis dynamometer to be arranged according to first road running resistance, and test and the first rolling resistance system
Corresponding first course continuation mileage of number；The acquisition module is also used to obtain tested vehicle and the second rolling resistance coefficient corresponding second
Road running resistance；The processing module is also used to be arranged the second of chassis dynamometer according to second road running resistance
Loading force, and test the second course continuation mileage corresponding with the second rolling resistance coefficient；Determining module, for continuous according to described first
Boat mileage and second course continuation mileage determine influence coefficient of the rolling resistance coefficient of the tested vehicle to course continuation mileage.
The electric car course continuation mileage test device of the embodiment of the present application, acquisition module, which obtains, first is measured vehicle and the
Corresponding first road running resistance of one rolling resistance coefficient, then Chassis dynamometer is arranged according to the first road running resistance in processing module
First loading force of machine, and the first course continuation mileage corresponding with the first rolling resistance coefficient is tested, it obtains module and obtains measured vehicle again
With the second corresponding second road running resistance of rolling resistance coefficient, then bottom is arranged according to the second road running resistance in processing module
Second loading force of disk dynamometer machine, and test the second course continuation mileage corresponding with the second rolling resistance coefficient.Last determining module according to
First course continuation mileage and the second course continuation mileage determine influence coefficient of the rolling resistance coefficient of tested vehicle to course continuation mileage.The device is logical
The loading force of chassis dynamometer is overregulated, realizes the convenient influence for accurately testing different rolling resistance coefficients to course continuation mileage, safety
Property it is high.
In addition, can also be had according to the electric car course continuation mileage test device of the above embodiments of the present application following additional
Technical characteristic:
In some instances, the acquisition module is specifically used for: obtaining test parameter, wherein the test parameter includes:
The kerb weight and speed of air resistance coefficient, front face area and the tested vehicle；First rolling is hindered using preset formula
Coefficient and the test parameter carry out calculation processing, obtain first road running resistance.
In some instances, the acquisition module is specifically also used to: using preset formula to it is described second rolling resistance coefficient and
The test parameter carries out calculation processing, obtains second road running resistance.
In some instances, the preset formula includes:
Wherein, f0For coefficient of rolling resistance constant, f1For rolling resistance coefficient of first order, m is kerb weight, and v is the speed of tested vehicle, g
For acceleration of gravity, CdFor air resistance coefficient, A is front face area.
In some instances, the device, further includes: setup module, for adjusting environmental chamber temperature according to testing requirement
Degree.
The additional aspect of the application and advantage will be set forth in part in the description, and will partially become from the following description
It obtains obviously, or recognized by the practice of the application.
Detailed description of the invention
The application is above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments
Obviously and it is readily appreciated that, in which:
Fig. 1 is the flow chart of the electric car course continuation mileage test method of the application one embodiment；
Fig. 2 is the flow chart of the electric car course continuation mileage test method of the application another embodiment；
Fig. 3 is the structural schematic diagram of the electric car course continuation mileage test device of the application one embodiment；And
Fig. 4 is the structural schematic diagram of the electric car course continuation mileage test device of the application another embodiment.
Specific embodiment
Embodiments herein is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the application, and should not be understood as the limitation to the application.
Below with reference to the accompanying drawings the electric car course continuation mileage test method and device of the embodiment of the present application are described.
Fig. 1 is the flow chart of the electric car course continuation mileage test method of the application one embodiment.
As shown in Figure 1, the electric car course continuation mileage test method includes:
Step 101, tested vehicle the first road running resistance corresponding with the first rolling resistance coefficient is obtained.
Step 102, the first loading force of chassis dynamometer, and test and institute are set according to first road running resistance
State corresponding first course continuation mileage of the first rolling resistance coefficient.
Specifically, rolling resistance index impacts the continual mileage of electric car, for the different rolling of quantitative analysis electric car
Coefficient is hindered to the influence degree of continual mileage, and this application provides a kind of electric car course continuation mileage test methods, so as to basis
Test result, which obtains electric car rolling resistance coefficient, influences continual mileage, for electric car improvement provide reliable reference according to
According to.
In order to test influence of variation of the electric car with rolling resistance coefficient to course continuation mileage, preset multiple and different
Rolling resistance coefficient is tested, and the present embodiment tests different rolling resistance coefficients by taking the first rolling resistance coefficient and the second rolling resistance coefficient as an example
Influence to course continuation mileage.In practical applications, it is tested in order to more fine-grained, it can be by more rolling resistance coefficient
Test and comparison is carried out, specific implementation process hinders the first rolling resistance coefficient and the second rolling the description of coefficient referring to the present embodiment, herein
It repeats no more.
Firstly, determining the first rolling resistance coefficient of tested electric car.Wherein, it should be noted that can be according to reality
Coefficient is hindered using needing to be arranged corresponding first rolling.
Wherein, electric car loading condition remains constant under multiple and different rolling resistance coefficient tests, such as: it will be electric
Electrical automobile is configured to half cargo condition, alternatively, full load condition etc. remains unchanged under multiple and different rolling resistance coefficient tests.
Then, tested vehicle the first road running resistance corresponding with the first rolling resistance coefficient is obtained.It should be noted that can
To be needed to obtain the first road running resistance corresponding with the first rolling resistance coefficient, example using various ways according to practical situations
Such as:
Example one inquires the correspondence application parameter of preset different pavement behavior from different rolling resistance coefficients, according to application
Parameter obtains the first road running resistance corresponding with the first rolling resistance coefficient；
Example two obtains test parameter according to preset running resistance calculation formula, is obtained and first according to test parameter
Corresponding first road running resistance of rolling resistance coefficient.
Specifically, electric car on road when driving, external drag by rolling resistance of wheel, wheel bearing friction
Caused by effect with air, and electric car, when operating on chassis dynamometer, external drag is the rolling of driving wheel
Resistance, bearing friction and windage and the bearing friction of revolution component etc., these resistance ratios are suffered when driving on road
External drag it is much smaller, in addition, there is no electric cars on chassis dynamometer air resistance suffered when driving on road
Power and grade resistance.
Therefore, it in order to keep stress condition of the electric car on chassis dynamometer essentially the same on road with traveling, needs
First loading force of chassis dynamometer is set according to the first road running resistance, and test obtain the first rolling resistance coefficient corresponding the
One course continuation mileage.
Step 103, tested vehicle the second road running resistance corresponding with the second rolling resistance coefficient is obtained.
Step 104, the second loading force of chassis dynamometer is set according to second road running resistance, and is tested and the
Corresponding second course continuation mileage of two rolling resistance coefficients.
With reference to the implementation process of above-mentioned steps 101 and step 102, the second rolling resistance coefficient corresponding the of electric car is tested
Two course continuation mileages.
Firstly, determining the second rolling resistance coefficient of tested electric car, wherein it should be noted that the second rolling resistance coefficient
It is different from the first rolling resistance coefficient, corresponding second rolling resistance coefficient can be set according to the actual application.
Tested vehicle the second road corresponding with the second rolling resistance coefficient is obtained referring next to the implementation process of above-mentioned steps 101
Running resistance.It should be noted that since the second rolling resistance coefficient is different from the first rolling resistance coefficient, corresponding second road
Running resistance is different from the first road running resistance.
Therefore, it in order to keep stress condition of the electric car on chassis dynamometer essentially the same on road with traveling, needs
Second loading force of chassis dynamometer is set according to the second road running resistance, and then test obtains the second rolling resistance coefficient and corresponds to
The second course continuation mileage.
Step 105, determine the rolling resistance coefficient of tested vehicle in continuation of the journey according to the first course continuation mileage and the second course continuation mileage
The influence coefficient of journey.
Specifically, by comparing the course continuation mileage obtained under different rolling resistance coefficients, rolling resistance index variation is obtained in continuation of the journey
The influence of journey.It should be noted that can according to the actual application using different calculations to the first course continuation mileage and
Second course continuation mileage is calculated, and determines influence coefficient of the rolling resistance coefficient of tested vehicle to course continuation mileage.It is illustrated below:
Assuming that the first course continuation mileage 100KM, the second course continuation mileage 120KM, wherein the second rolling resistance rolling resistance of coefficient ratio first coefficient few 2,
Example one, the value for obtaining 1.2 by 120/100 hinder the influence coefficient bits that coefficient reduces by 2 pairs of course continuation mileages as rolling
1.2。
Example two hinders the influence that coefficient reduces by 2 pairs of course continuation mileages as rolling by the value that (120-100)/100 obtains 0.2
Coefficient bits 0.2.
In conclusion the electric car course continuation mileage test method of the embodiment of the present application, obtain being measured first vehicle with
First corresponding first road running resistance of rolling resistance coefficient, then according to the of the first road running resistance setting chassis dynamometer
One loading force, and the first course continuation mileage corresponding with the first rolling resistance coefficient is tested, then obtain being measured vehicle and the second rolling resistance system
Corresponding second road running resistance of number, the second loading force of chassis dynamometer is arranged then according to the second road running resistance,
And test the second course continuation mileage corresponding with the second rolling resistance coefficient.Finally determined according to the first course continuation mileage and the second course continuation mileage
Influence coefficient of the rolling resistance coefficient of tested vehicle to course continuation mileage.This method is realized by the loading force of adjusting chassis dynamometer
The convenient influence for accurately testing different rolling resistance coefficients to course continuation mileage, it is highly-safe.
In order to more clearly illustrate above-mentioned implementation process, in conjunction with Fig. 2 to obtain road running resistance by preset formula
For be described as follows:
Fig. 2 is the flow chart of the electric car course continuation mileage test of the application another embodiment.
As illustrated in fig. 2, it is assumed that the electric car in the present embodiment is half cargo condition, the first rolling resistance coefficient is f1；Second rolling
Resistance coefficient is f2, which includes:
Step 201, test parameter is obtained, wherein test parameter includes: air resistance coefficient and front face area and is tested
The kerb weight and speed of vehicle.
Step 202, calculation processing is carried out to the first rolling resistance coefficient and test parameter using preset formula, obtains the first road
Running resistance.
Specifically, preset test parameter includes the kerb weight and vehicle of air resistance coefficient, front face area and tested vehicle
When fast four kinds of parameters, rolling resistance coefficient progress calculation processing using preset formula first is
Wherein, f0For coefficient of rolling resistance constant, f1For rolling resistance coefficient of first order, m is kerb weight, and v is the speed of tested vehicle, g
For acceleration of gravity, CdFor air resistance coefficient, A is front face area.Obtain the first road running resistance.
Step 203, environmental chamber temperature is adjusted according to testing requirement.
Wherein, air drag and environmental condition close association, accuracy in order to ensure the test results are needed according to test
Demand adjusts environmental chamber temperature.The temperature range of general test demand, control errors it is positive and negative once.
Step 204, the first loading force of chassis dynamometer is set according to the first road running resistance, and is tested and the first rolling
Hinder corresponding first course continuation mileage of coefficient.
In order to keep stress condition of the electric car on chassis dynamometer essentially the same on road with traveling, basis is needed
First rolling resistance coefficient corresponding first road running resistance setting chassis dynamometer of the tested vehicle under the first test mode
First loading force, and then test and obtain corresponding first course continuation mileage of the first rolling resistance coefficient.
Step 205, calculation processing is carried out to the second rolling resistance coefficient and test parameter using preset formula, obtains the second road
Running resistance.
Specifically, preset test parameter includes the kerb weight and vehicle of air resistance coefficient, front face area and tested vehicle
When fast four kinds of parameters, using the 2nd f of preset formula3Rolling resistance coefficient carries out calculation processing and isIts
In, f2For coefficient of rolling resistance constant, f3For rolling resistance quadratic coefficients, m is kerb weight, and v is the speed of tested vehicle, and g is
Acceleration of gravity, CdFor air resistance coefficient, A is front face area.Obtain the second road running resistance.
According to step 202, using default test parameter, the second rolling resistance coefficient and test parameter are carried out using preset formula
Calculation processing obtains the second road running resistance.
Step 206, the second loading force of chassis dynamometer is set according to the second road running resistance, and is tested and the second rolling
Hinder corresponding second course continuation mileage of coefficient.
Specifically, in order to keep stress condition of the electric car on chassis dynamometer essentially the same on road with traveling,
Need the second rolling resistance coefficient corresponding second road running resistance setting chassis according to tested vehicle under the second test mode
Second loading force of dynamometer machine, and then test and obtain corresponding second course continuation mileage of the second rolling resistance coefficient.
Step 207, determine the rolling resistance coefficient of tested vehicle in continuation of the journey according to the first course continuation mileage and the second course continuation mileage
The influence coefficient of journey.
Specifically, by comparing the course continuation mileage obtained under different rolling resistance coefficients, rolling resistance index variation is obtained in continuation of the journey
The influence of journey, referring specifically to step 105, and will not be described here in detail.
In conclusion the electric car course continuation mileage test method of the embodiment of the present application, obtain being measured first vehicle with
First corresponding first road running resistance of rolling resistance coefficient, then according to the of the first road running resistance setting chassis dynamometer
One loading force, and the first course continuation mileage corresponding with the first rolling resistance coefficient is tested, then obtain being measured vehicle and the second rolling resistance system
Corresponding second road running resistance of number, the second loading force of chassis dynamometer is arranged then according to the second road running resistance,
And test the second course continuation mileage corresponding with the second rolling resistance coefficient.Finally determined according to the first course continuation mileage and the second course continuation mileage
Influence coefficient of the rolling resistance coefficient of tested vehicle to course continuation mileage.This method is realized by the loading force of adjusting chassis dynamometer
The convenient influence for accurately testing different rolling resistance coefficients to course continuation mileage, it is highly-safe.
In order to realize above-described embodiment, the application also proposes a kind of electric car course continuation mileage test device.
Fig. 3 is the structural schematic diagram of the electric car course continuation mileage test device of the application one embodiment.
As shown in figure 3, the electric car course continuation mileage test device includes: to obtain module 10, processing module 20 and determine
Module 30.
Wherein, module 10 is obtained for obtaining tested vehicle the first road running resistance corresponding with the first rolling resistance coefficient.
Processing module 20 be used for according to the first road running resistance be arranged chassis dynamometer the first loading force, and test with
Corresponding first course continuation mileage of first rolling resistance coefficient.
Firstly, determining the first rolling resistance coefficient of tested electric car.Wherein, it should be noted that can be according to reality
Coefficient is hindered using corresponding first rolling of electric car loading condition setting is needed to configure, such as: semi-load are configured by electric car
State, alternatively, full load condition etc..
Then, tested vehicle the first road running resistance corresponding with the first rolling resistance coefficient is obtained.It should be noted that can
To be needed to obtain the first road running resistance corresponding with the first rolling resistance coefficient using various ways according to practical situations.Ginseng
The implementation process of above-mentioned steps 101 and step 102 is examined, and will not be described here in detail.
It obtains module 10 and is also used to obtain tested vehicle the second road running resistance corresponding with the second rolling resistance coefficient；
Processing module 20 is also used to be arranged according to the second road running resistance the second loading force of chassis dynamometer, and tests
The second course continuation mileage corresponding with the second rolling resistance coefficient.
With reference to the implementation process of above-mentioned steps 101 and step 102, the second rolling resistance coefficient corresponding the of electric car is tested
Two course continuation mileages.And will not be described here in detail.
Determining module 30 is used to determine that the rolling of tested vehicle hinders coefficient pair according to the first course continuation mileage and the second course continuation mileage
The influence coefficient of course continuation mileage.
Specifically, by comparing the course continuation mileage obtained under different rolling resistance coefficients, rolling resistance index variation is obtained in continuation of the journey
The influence of journey.It should be noted that can according to the actual application using different calculations to the first course continuation mileage and
Second course continuation mileage is calculated, and determines influence coefficient of the rolling resistance coefficient of tested vehicle to course continuation mileage.With reference to above-mentioned steps
105 implementation process, and will not be described here in detail.
It should be noted that the aforementioned explanation to electric car course continuation mileage testing example is also applied for the implementation
The electric car course continuation mileage test device of example, details are not described herein again.
In conclusion the electric car course continuation mileage test device of the embodiment of the present application, first acquisition module obtain tested
Vehicle the first road running resistance corresponding with the first rolling resistance coefficient is measured, then processing module is set according to the first road running resistance
The first loading force of chassis dynamometer is set, and tests the first course continuation mileage corresponding with the first rolling resistance coefficient, module is obtained and obtains again
Measured vehicle the second road running resistance corresponding with the second rolling resistance coefficient is taken, then processing module is according to the second road driving
The second loading force of chassis dynamometer is arranged in resistance, and tests the second course continuation mileage corresponding with the second rolling resistance coefficient.It is last true
Cover half root tuber determines influence system of the rolling resistance coefficient of tested vehicle to course continuation mileage according to the first course continuation mileage and the second course continuation mileage
Number.For the device by the loading force of adjusting chassis dynamometer, realization is convenient accurately to test different rollings resistance coefficients to course continuation mileage
Influence, it is highly-safe.
In order to more clearly illustrate above-mentioned implementation process, in conjunction with Fig. 4 to obtain road running resistance by preset formula
For be described as follows:
Fig. 4 is the structural schematic diagram of the electric car course continuation mileage test device of the application another embodiment.
As shown in figure 4, being based on embodiment illustrated in fig. 3, described device further include: setup module 40.
Wherein, setup module 40 is used to adjust environmental chamber temperature according to testing requirement.
Wherein, air drag and environmental condition close association, accuracy in order to ensure the test results are needed according to test
Demand adjusts environmental chamber temperature.The temperature range of general test demand, control errors it is positive and negative once.
It obtains module 10 to be specifically used for: obtaining test parameter, wherein the test parameter includes: air resistance coefficient, windward side
Long-pending and tested vehicle kerb weight and speed；The first rolling resistance coefficient and test parameter are calculated using preset formula
Processing obtains first road running resistance.
Specifically, preset test parameter includes the kerb weight and vehicle of air resistance coefficient, front face area and tested vehicle
When fast four kinds of parameters, rolling resistance coefficient progress calculation processing using preset formula first is
Wherein, f0For coefficient of rolling resistance constant, f1For rolling resistance coefficient of first order, m is kerb weight, and v is the speed of tested vehicle, g
For acceleration of gravity, CdFor air resistance coefficient, A is front face area.Obtain the first road running resistance.
It obtains module 10 to be specifically also used to: the second rolling resistance coefficient and the test parameter being carried out using preset formula
Calculation processing obtains second road running resistance.
Specifically, preset test parameter includes the kerb weight and vehicle of air resistance coefficient, front face area and tested vehicle
When fast four kinds of parameters, using the 2nd f of preset formula3Rolling resistance coefficient carries out calculation processing and is
Wherein, f2For coefficient of rolling resistance constant, f3For rolling resistance quadratic coefficients, m is kerb weight, and v is the speed of tested vehicle, g
For acceleration of gravity, CdFor air resistance coefficient, A is front face area.Obtain the second road running resistance.
It should be noted that the aforementioned explanation to electric car course continuation mileage testing example is also applied for the implementation
The electric car course continuation mileage test device of example, details are not described herein again.
In conclusion the electric car course continuation mileage test device of the embodiment of the present application, first acquisition module obtain tested
Vehicle the first road running resistance corresponding with the first rolling resistance coefficient is measured, then processing module is set according to the first road running resistance
The first loading force of chassis dynamometer is set, and tests the first course continuation mileage corresponding with the first rolling resistance coefficient, module is obtained and obtains again
Measured vehicle the second road running resistance corresponding with the second rolling resistance coefficient is taken, then processing module is according to the second road driving
The second loading force of chassis dynamometer is arranged in resistance, and tests the second course continuation mileage corresponding with the second rolling resistance coefficient.It is last true
Cover half root tuber determines influence system of the rolling resistance coefficient of tested vehicle to course continuation mileage according to the first course continuation mileage and the second course continuation mileage
Number.For the device by the loading force of adjusting chassis dynamometer, realization is convenient accurately to test different rollings resistance coefficients to course continuation mileage
Influence, it is highly-safe.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the application.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present application, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
Any process described otherwise above or method description are construed as in flow chart or herein, and expression includes
It is one or more for realizing specific logical function or process the step of executable instruction code module, segment or portion
Point, and the range of the preferred embodiment of the application includes other realization, wherein can not press shown or discussed suitable
Sequence, including according to related function by it is basic simultaneously in the way of or in the opposite order, to execute function, this should be by the application
Embodiment person of ordinary skill in the field understood.
Expression or logic and/or step described otherwise above herein in flow charts, for example, being considered use
In the order list for the executable instruction for realizing logic function, may be embodied in any computer-readable medium, for
Instruction execution system, device or equipment (such as computer based system, including the system of processor or other can be held from instruction
The instruction fetch of row system, device or equipment and the system executed instruction) it uses, or combine these instruction execution systems, device or set
It is standby and use.
Those skilled in the art are understood that realize all or part of step that above-described embodiment method carries
It suddenly is that relevant hardware can be instructed to complete by program, the program can store in a kind of computer-readable storage medium
In matter, which when being executed, includes the steps that one or a combination set of embodiment of the method.
It, can also be in addition, can integrate in a proxy module in each functional unit in each embodiment of the application
It is that each unit physically exists alone, can also be integrated in two or more units in a module.Above-mentioned integrated mould
Block both can take the form of hardware realization, can also be realized in the form of software function module.The integrated module is such as
Fruit is realized and when sold or used as an independent product in the form of software function module, also can store in a computer
In read/write memory medium.
Although embodiments herein has been shown and described above, it is to be understood that above-described embodiment is example
Property, it should not be understood as the limitation to the application, those skilled in the art within the scope of application can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of electric car course continuation mileage test method, which comprises the following steps:
Obtain tested vehicle the first road running resistance corresponding with the first rolling resistance coefficient；
First loading force of chassis dynamometer is set according to first road running resistance, and is tested and the first rolling resistance system
Corresponding first course continuation mileage of number；
Obtain tested vehicle the second road running resistance corresponding with the second rolling resistance coefficient；Wherein, by presetting the first rolling
Hinder coefficient and the second rolling resistance coefficient；The electric car loading condition is in the first rolling resistance coefficient and the second rolling resistance coefficient
It is remained unchanged under test；
Second loading force of chassis dynamometer is set according to second road running resistance, and is tested and the second rolling resistance system
Corresponding second course continuation mileage of number；
Determine the rolling resistance coefficient of the tested vehicle in continuation of the journey according to first course continuation mileage and second course continuation mileage
The influence coefficient of journey.
2. the method as described in claim 1, which is characterized in that the acquisition tested vehicle and the first rolling resistance coefficient corresponding the
One road running resistance, comprising:
Obtain test parameter, wherein the test parameter includes: the whole of air resistance coefficient, front face area and the tested vehicle
Standby quality and speed；
Calculation processing is carried out to the first rolling resistance coefficient and the test parameter using preset formula, obtains first road
Running resistance.
3. method according to claim 2, which is characterized in that the acquisition tested vehicle and the second rolling resistance coefficient corresponding the
Two road running resistances, comprising:
Calculation processing is carried out to the second rolling resistance coefficient and the test parameter using preset formula, obtains second road
Running resistance.
4. method according to claim 2, which is characterized in that the preset formula includes:
Wherein, f0For coefficient of rolling resistance constant, f1To roll
Resistance coefficient of first order, m are kerb weight, and v is the speed of tested vehicle, and g is acceleration of gravity, CdFor air resistance coefficient, A is windward
Area.
5. the method as described in claim 1-4 is any, which is characterized in that set described according to first road running resistance
Before setting the first loading force of chassis dynamometer, further includes:
Environmental chamber temperature is adjusted according to testing requirement.
6. a kind of electric car course continuation mileage test device characterized by comprising
Module is obtained, for obtaining tested vehicle the first road running resistance corresponding with the first rolling resistance coefficient；
Processing module, for according to first road running resistance be arranged chassis dynamometer the first loading force, and test with
First rolling hinders corresponding first course continuation mileage of coefficient；
The acquisition module is also used to obtain tested vehicle the second road running resistance corresponding with the second rolling resistance coefficient；Wherein,
Coefficient and the second rolling resistance coefficient are hindered by presetting the first rolling；The electric car loading condition is in the first rolling resistance coefficient
It is remained unchanged under the second rolling resistance coefficient test；
The processing module is also used to be arranged according to second road running resistance the second loading force of chassis dynamometer, and
Test the second course continuation mileage corresponding with the second rolling resistance coefficient；
Determining module, for determining that the rolling of the tested vehicle is hindered according to first course continuation mileage and second course continuation mileage
Influence coefficient of the coefficient to course continuation mileage.
7. device as claimed in claim 6, which is characterized in that the acquisition module is specifically used for:
Obtain test parameter, wherein the test parameter includes: the whole of air resistance coefficient, front face area and the tested vehicle
Standby quality and speed；
Calculation processing is carried out to the first rolling resistance coefficient and the test parameter using preset formula, obtains first road
Running resistance.
8. device as claimed in claim 7, which is characterized in that the acquisition module is specifically also used to:
Calculation processing is carried out to the second rolling resistance coefficient and the test parameter using preset formula, obtains second road
Running resistance.
9. device as claimed in claim 7, which is characterized in that the preset formula includes:
Wherein, f0For coefficient of rolling resistance constant, f1To roll
Resistance coefficient of first order, m are kerb weight, and v is the speed of tested vehicle, and g is acceleration of gravity, CdFor air resistance coefficient, A is windward
Area.
10. the device as described in claim 6-9 is any, which is characterized in that further include:
Setup module, for adjusting environmental chamber temperature according to testing requirement.
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| CN106897533B (en) * | 2017-03-08 | 2019-11-05 | 安徽江淮汽车集团股份有限公司 | A kind of automobile resistance measurement method |
| CN107323279B (en) * | 2017-06-23 | 2019-08-02 | 北京新能源汽车股份有限公司 | Driving range correction method and device based on electric vehicle |
| CN107238501B (en) * | 2017-06-27 | 2020-11-24 | 北京新能源汽车股份有限公司 | Method and system for testing road sliding resistance of electric automobile |
| CN107478437B (en) * | 2017-07-21 | 2020-09-29 | 北京新能源汽车股份有限公司 | Method, device and equipment for testing relation between road resistance and vehicle speed |
| CN108444497A (en) * | 2018-03-29 | 2018-08-24 | 北京新能源汽车股份有限公司 | Method for testing driving range of vehicle, chassis dynamometer and testing system |
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