CN109228886A - A kind of power assembly of electric automobile characteristic parameter matching method, control device and equipment - Google Patents

A kind of power assembly of electric automobile characteristic parameter matching method, control device and equipment Download PDF

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Publication number
CN109228886A
CN109228886A CN201811157799.XA CN201811157799A CN109228886A CN 109228886 A CN109228886 A CN 109228886A CN 201811157799 A CN201811157799 A CN 201811157799A CN 109228886 A CN109228886 A CN 109228886A
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motor
parameter
design parameter
design
value
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CN109228886B (en
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马朋涛
王泽兴
白伟
苏正杲
伊然
刘钊
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Beijing Electric Vehicle Co Ltd
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Beijing Electric Vehicle Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • B60L15/2045—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for optimising the use of energy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/10—Vehicle control parameters
    • B60L2240/12—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/42—Drive Train control parameters related to electric machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/42—Drive Train control parameters related to electric machines
    • B60L2240/421—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/42—Drive Train control parameters related to electric machines
    • B60L2240/423—Torque
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility

Abstract

The invention discloses a kind of power assembly of electric automobile characteristic parameter matching method, control device and equipment, the matching process includes: the value range for obtaining an at least design parameter for motor；Determine that the dynamic property that can satisfy vehicle in the value range of each design parameter checks desired targeted parameter value；Determine motor type when corresponding targeted parameter value is respectively adopted in each design parameter；According to electric efficiency contour map corresponding with motor type, motor calculation efficiency when corresponding targeted parameter value is respectively adopted in each design parameter is determined；According to the relationship of corresponding with motor type design parameter and motor weight, determine that the motor weight of the corresponding targeted parameter value is respectively adopted in each design parameter；According to motor calculation efficiency and motor weight, the motor optimal design parameters for meeting vehicle performance driving economy requirement in targeted parameter value are determined.The problem of solving in power assembly parameter matched design, not can be carried out the emulation of vehicle dynamic property economy.

Description

A kind of power assembly of electric automobile characteristic parameter matching method, control device and equipment
Technical field
The present invention relates to the technical field of power assembly of electric automobile parameter matched design more particularly to a kind of electric cars Power assembly characteristic parameter matching method, control device and equipment.
Background technique
Currently, pure electric automobile is generally divided into two methods: one in carrying out power drive system motor and retarder matching It is to be matched according to existing motor model, checks its dynamic property for whether meeting vehicle and cost-effectiveness requirement；First is that again The matched design of electric drive assembly parameter is carried out, to obtain new motor performance parameter requirement.The former is existing due to motor The efficiency contour map of product, available motor carries out the emulation of dynamic property economy, but selected motor is not optimal case； The available optimal motor performance parameter index of the latter, but need to design and produce new motor, conceptual design early period without Method obtains electric efficiency contour map, can not carry out vehicle dynamic property and economy emulation.
Summary of the invention
In order to solve the above-mentioned technical problems, the present invention provides a kind of power assembly of electric automobile characteristic parameter matching methods, control Device processed and equipment, not can be carried out vehicle dynamic property when solving the matched design for carrying out electric drive assembly parameter and economy is imitative Genuine problem.
According to one aspect of the present invention, a kind of power assembly of electric automobile characteristic parameter matching method is provided, comprising:
Obtain the value range of an at least design parameter for motor；
Determine that the dynamic property that can satisfy vehicle in the value range of each design parameter checks desired mesh Mark parameter value；
Determine motor type when the corresponding targeted parameter value is respectively adopted in each design parameter；
According to electric efficiency contour map corresponding with the motor type, determine that each design parameter is respectively adopted Motor calculation efficiency when the corresponding targeted parameter value；
According to the relationship of corresponding with the motor type design parameter and motor weight, each design parameter is determined Motor weight when the corresponding targeted parameter value is respectively adopted；
According to the motor calculation efficiency and motor weight, determines and meet vehicle performance driving economy in the targeted parameter value It is required that motor optimal design parameters.
Optionally, the design parameter includes: that peak power, peak torque, nominal torque, maximum speed and retarder subtract Speed ratio.
Optionally, determine that the dynamic property check that can satisfy vehicle in the value range of each design parameter is wanted The targeted parameter value asked, comprising:
According to the value range of each design parameter, first group of design ginseng in the value range is obtained Number；
Dynamic property check is carried out to first group of design parameter；
If first group of design parameter does not meet the requirement that the dynamic property is checked, again according to each design The value range of parameter, obtains first group of design parameter, and action edge of going forward side by side is checked；
If first group of design parameter meets the requirement that the dynamic property is checked, first group of design ginseng is exported Number, as the targeted parameter value.
Optionally, dynamic property check is carried out to first group of design parameter, comprising:
The dynamic property requirement of vehicle is obtained, the dynamic property requires to include vehicle maximum speed, vehicle acceleration time and vehicle Three aspects of max. climb slope；
Whether the dynamic property requirement is met to first group of design parameter, is checked；
If first group of design parameter meets the vehicle maximum speed, vehicle acceleration time and maximum climbable gradient of vehicle Requirement, then first group of design parameter meet dynamic property check requirement；
If first group of design parameter is unsatisfactory for the vehicle maximum speed, vehicle acceleration time and the climbing of vehicle maximum The requirement of any of degree, then first group of design parameter does not meet the requirement that the dynamic property is checked.
Optionally, according to electric efficiency contour map corresponding with the motor type, each design parameter is determined Motor calculation efficiency when the corresponding targeted parameter value is respectively adopted, comprising:
Obtain electric efficiency contour map corresponding with the motor type；
According to the electric efficiency contour map corresponding with the motor type, motor calculation efficiency calculation mould is established Type；
The target component is inputted in the motor calculation efficiency calculation model, it is corresponding to obtain the targeted parameter value Motor calculation efficiency.
Optionally, according to the relational graph of corresponding with the motor type design parameter and motor weight, each institute is determined State motor weight when the corresponding targeted parameter value is respectively adopted in design parameter, comprising:
Obtain the relationship of corresponding with the motor type design parameter and motor weight；
According to the relationship of corresponding with the motor type design parameter and motor weight, the calculating of motor weight is established Model；
The targeted parameter value is inputted in the motor weight computation model, obtains the corresponding electricity of the targeted parameter value Machine weight.
Optionally, it according to the motor calculation efficiency and motor weight, determines and meets vehicle fortune in the targeted parameter value The motor optimal design parameters of row cost-effectiveness requirement, comprising:
According to the motor calculation efficiency and motor weight, the unit mileage energy consumption of vehicle is calculated；
In multiple unit mileage energy consumptions being calculated, the smallest unit mileage energy consumption is obtained；
Targeted parameter value corresponding to the smallest unit mileage energy consumption is exported, is joined as the motor optimal design Number.
According to another aspect of the invention, a kind of power assembly of electric automobile parameter matching control apparatus is provided, is wrapped It includes:
Design parameter range obtains module, the value range of at least design parameter for obtaining motor；
Target component determining module can satisfy vehicle in the value range for determining each design parameter Dynamic property check require targeted parameter value；
Motor type determining module, for determining that the corresponding target component is respectively adopted in each design parameter Motor type when value；
Motor calculation efficiency determination module, for basis electric efficiency contour map corresponding with the motor type, really Motor calculation efficiency when the corresponding targeted parameter value is respectively adopted in fixed each design parameter；
Motor weight determining module, for the pass according to corresponding with the motor type design parameter and motor weight System, determines motor weight when the corresponding targeted parameter value is respectively adopted in each design parameter；
Motor optimal design parameters determining module, described in determining according to the motor calculation efficiency and motor weight Meet the motor optimal design parameters of vehicle performance driving economy requirement in targeted parameter value.
Optionally, the design parameter includes: that peak power, peak torque, nominal torque, maximum speed and retarder subtract Speed ratio.
According to another aspect of the invention, a kind of control equipment is provided, comprising: memory, processor and be stored in On memory and the computer program that can run on a processor, described in the processor is realized when executing the computer program Power assembly of electric automobile characteristic parameter matching method in step.
The beneficial effect of the embodiment of the present invention is:
The embodiment of the invention provides a kind of power assembly of electric automobile characteristic parameter matching method, control device and equipment, institutes Power assembly of electric automobile characteristic parameter matching method is stated, according to the electric efficiency contour map of the existing motor product of same type, is obtained The motor calculation efficiency of design motor needed for out determines institute according to the relationship of the design parameter of same type motor and motor weight The motor weight of motor need to be designed, and then obtains the optimal motor optimal design parameters of economy.The characteristic parameter matching method exists Schematic design phase can use optimization thought, obtain the optimal design of electrical motor parameter for meeting vehicle dynamic property and economy, For electric drive assembly is newly developed, asking for vehicle economy emulation not can be carried out when solving the matched design of drive assembly parameter Topic.
Detailed description of the invention
Fig. 1 shows one of the flow charts of the power assembly of electric automobile characteristic parameter matching method of the embodiment of the present invention；
Fig. 2 indicates the two of the flow chart of the power assembly of electric automobile characteristic parameter matching method of the embodiment of the present invention；
Fig. 3 indicates the three of the flow chart of the power assembly of electric automobile characteristic parameter matching method of the embodiment of the present invention；
Fig. 4 indicates the four of the flow chart of the power assembly of electric automobile characteristic parameter matching method of the embodiment of the present invention；
Fig. 5 indicates the five of the flow chart of the power assembly of electric automobile characteristic parameter matching method of the embodiment of the present invention；
Fig. 6 indicates the six of the flow chart of the power assembly of electric automobile characteristic parameter matching method of the embodiment of the present invention；
Fig. 7 indicates the structural block diagram of the power assembly of electric automobile parameter matching control apparatus of the embodiment of the present invention.
Specific embodiment
The exemplary embodiment that the present invention will be described in more detail below with reference to accompanying drawings.Although showing the present invention in attached drawing Exemplary embodiment, it being understood, however, that may be realized in various forms the present invention without should be by embodiments set forth here It is limited.It is to be able to thoroughly understand the present invention on the contrary, providing these embodiments, and can be by the scope of the present invention It is fully disclosed to those skilled in the art.
The embodiment provides a kind of power assembly of electric automobile characteristic parameter matching methods, as shown in Figure 1, include with Lower step:
Step 11, obtain motor an at least design parameter value range.
Preferably, the design parameter includes: that peak power, peak torque, nominal torque, maximum speed and retarder subtract Speed ratio.
Specifically, obtaining the value range of an at least design parameter for motor, that is, obtain the peak power, peak value turns Square, nominal torque, five kinds of design parameters of maximum speed and retarder reduction ratio at least one design parameter value range.
Step 12 determines that the dynamic property check that can satisfy vehicle in the value range of each design parameter is wanted The targeted parameter value asked.
Specifically, as shown in Fig. 2, the step 12 the following steps are included:
Step 121, according to the value range of each design parameter, obtain first group in the value range Design parameter.
Specifically, first group of design parameter is obtained according to the value range, including the institute in each design parameter State and obtain a design parameter value in value range, wherein the design parameter include peak power, peak torque, nominal torque, Maximum speed and retarder reduction ratio.
For example, obtaining the first peak power value in the value range of the peak power；In taking for the peak torque It is worth in range and obtains the first peak torque value；The first nominal torque value is obtained in the value range of the nominal torque；Institute It states and obtains the first maximum speed value in the value range of maximum speed；Is obtained in the value range of the retarder reduction ratio One speed reducer deceleration ratio.First peak power value, the first peak torque value, the first nominal torque value, the first highest turn Speed value and the first retarder deceleration ratio form first group of design parameter.
Step 122 carries out dynamic property check to first group of design parameter.
Specifically, as shown in figure 3, the step 122 the following steps are included:
Step 1221, the dynamic property requirement for obtaining vehicle, the dynamic property requires to include vehicle maximum speed, vehicle accelerates Three aspects of time and maximum climbable gradient of vehicle.
Specifically, the dynamic property of the vehicle is climbed by the vehicle maximum speed, vehicle acceleration time and vehicle maximum It spends three aspects to be considered, if first group of design parameter meets the requirement of three aspects, described first group is set Meter parameter meets the dynamic property requirement of vehicle.
Whether step 1222 meets the dynamic property to first group of design parameter and requires to check.
Specifically, described require to check to whether first group of design parameter meets the dynamic property, including right Whether first group of design parameter meets three the vehicle maximum speed, vehicle acceleration time and maximum climbable gradient of vehicle sides It is checked in face.
In the present embodiment, the requirement for whether meeting the vehicle maximum speed to first group of design parameter carries out school Core, comprising:
It obtains the first check parameter and first in first group of design parameter is judged according to the vehicle maximum speed Whether maximum speed value and the first retarder speed ratio value meet equation one.Wherein, the first check parameter includes: wheel half Diameter.
Equation one:
0.377nmaxr/i≥vmax
Wherein, nmaxFor the first maximum speed value, r is the radius of wheel, and i is the first retarder speed ratio value, vmaxFor the vehicle maximum speed.
If the first maximum speed value and the first retarder speed ratio value meet equation one, described first is determined Maximum speed value and the first retarder speed ratio value are met the requirements.If the first maximum speed value and first retarder Speed ratio value is unsatisfactory for equation one, then determines that the first maximum speed value and the first retarder speed ratio value are unsatisfactory for wanting It asks.
In the present embodiment, the requirement for whether meeting the vehicle acceleration time to first group of design parameter carries out school Core, comprising:
It obtains the second check parameter and first in first group of design parameter is judged according to the vehicle acceleration time Whether peak power value meets equation two.The second check parameter includes: to accelerate finish time speed, accelerates start time Speed, vehicle correction coefficient of rotating mass, rolling resistance coefficient, half mounted mass of vehicle, acceleration of gravity, air resistance coefficient, front face area And transmission system efficiency.
Equation two:
Pmax≥(fmgv2 2/5400+CDAv2 3/190350+σm(v2 2-v1 2)/ta/25920)/η
Wherein, v2For the acceleration finish time speed, v1For the acceleration start time speed, σ is vehicle rotation Mass conversion coefficient, taFor the vehicle acceleration time, PmaxFor first peak power value, f is that the rolling hinders coefficient, and m is Half mounted mass of vehicle, g are the acceleration of gravity, CDFor the air resistance coefficient, A is the front face area, and η is the biography Dynamic system effectiveness.
If first peak power value meets equation two, determine that first peak power value is met the requirements, if First peak power value is unsatisfactory for equation two, then determines that first peak power value is unsatisfactory for requiring.
In the present embodiment, the requirement for whether meeting the maximum climbable gradient of vehicle to first group of design parameter carries out school Core, comprising:
It obtains third and checks parameter, according to the vehicle climbable gradient, judge described the in first group of design parameter Whether one peak torque value and the first retarder speed ratio value meet equation three.It includes: vehicle tyre that third, which checks parameter, Attachment coefficient, rolling resistance coefficient, half mounted mass of vehicle, acceleration of gravity and transmission system efficiency.
Equation three:
fmgcosα+mgsinα≤Tmaxiη≤Φmgcosα
Wherein, α is the vehicle climbable gradient, and Φ is the vehicle tyre attachment coefficient, and f is that the rolling hinders coefficient, and m is institute Half mounted mass of vehicle is stated, g is the acceleration of gravity, and η is the transmission system efficiency, and i is the first retarder speed ratio value, TmaxFor the first peak value torque value.
If the first peak value torque value and the first retarder speed ratio value meet equation three, described first is determined Peak torque value and the first retarder speed ratio value are met the requirements, if the first peak value torque value and first retarder Speed ratio value is unsatisfactory for equation three, then determines that the first peak value torque value and the first retarder speed ratio value are unsatisfactory for wanting It asks.
If step 1223, first group of design parameter meet the vehicle maximum speed, vehicle acceleration time and vehicle The requirement of max. climb slope, then first group of design parameter meets the requirement of dynamic property check.
If step 1224, first group of design parameter are unsatisfactory for stating vehicle maximum speed, vehicle acceleration time and vehicle The requirement of any of max. climb slope, then first group of design parameter does not meet the requirement that the dynamic property is checked.
In the present embodiment, when first group of design parameter meets the vehicle maximum speed, vehicle acceleration time and vehicle When whole in max. climb slope requires, first group of design parameter meets the requirement that the dynamic property is checked.If described When first group of design parameter is unsatisfactory for stating any one in vehicle maximum speed, vehicle acceleration time and maximum climbable gradient of vehicle, First group of design parameter does not meet the requirement that the dynamic property is checked.
If step 123, first group of design parameter do not meet the requirement that the dynamic property is checked, again according to each The value range of the design parameter, obtains first group of design parameter, and action edge of going forward side by side is checked.
Specifically, if first group of design parameter does not meet the requirement that the dynamic property is checked, according to the value Range reacquires first group of design parameter, sets including reacquiring one in the value range of each design parameter Count parameter value, wherein the design parameter includes that peak power, peak torque, nominal torque, maximum speed and retarder slow down Than.
For example, obtaining the second peak power value in the value range of the peak power；In taking for the peak torque It is worth in range and obtains the second peak torque value；The first nominal torque value is obtained in the value range of the nominal torque；Institute It states and obtains the second maximum speed value in the value range of maximum speed；Is obtained in the value range of the retarder reduction ratio Two retarder deceleration ratios.Second peak power value, the second peak torque value, the second nominal torque value, the second highest turn Speed value and the second retarder deceleration ratio reformulate first group of design parameter.
If step 124, first group of design parameter meet the requirement that the dynamic property is checked, described first group is exported Design parameter, as the targeted parameter value.
In the present embodiment, if first group of design parameter meets the requirement that the dynamic property is checked, by described first Group design parameter is exported as the targeted parameter value.The targeted parameter value can be first group of design parameter described in multiple groups.
Step 13 determines electric machinery when the corresponding targeted parameter value is respectively adopted in each design parameter Type.
Specifically, being determined and described first according to first group of design parameter corresponding with the targeted parameter value The corresponding motor type of group design parameter.
Step 14, basis electric efficiency contour map corresponding with the motor type, determine each design parameter Motor calculation efficiency when the corresponding targeted parameter value is respectively adopted.
Specifically, as shown in figure 4, the step 14 the following steps are included:
Step 141 obtains electric efficiency contour map corresponding with the motor type.
Step 142, the electric efficiency contour map corresponding with the motor type according to, establish motor calculation efficiency Computation model.
Specifically, step 142 the following steps are included:
According to the corresponding electric efficiency contour map of the motor type, recurrence calculating is carried out, obtains the first estimation constant； The mathematics computing model of the motor calculation efficiency is established in conjunction with the estimation constant.
Determination about the first estimation constant: according to the corresponding electric efficiency contour map of the motor type, institute is obtained The relationship of the parameter of electric machine corresponding to motor type and electric efficiency is stated, recurrence calculating is carried out, determines that the motor type institute is right The the first estimation constant answered, the first estimation constant includes third coefficient and the 4th coefficient.
The foundation of mathematics computing model about the motor calculation efficiency:
According to one~formula of formula 14, the motor calculation efficiency of the motor in any torque and any revolving speed is established Mathematical model.
Formula one:
Formula two:
Formula three:
Formula four:
Formula five:
Formula six:
Formula seven:
Te_N=Tcoul+Bvis+TN
Formula eight:
Formula nine:
Formula ten:
wmax=π nmax/30
Formula 11:
Formula 12:
Formula 13:
Formula 14:
Wherein, ηmFor the motor calculation efficiency, T is the motor torque, and ω is the motor speed, nmaxIt is described Maximum speed, TNFor the nominal torque, p is motor pole logarithm, PmaxFor the peak power, ωT_NFor nominal torque pair Answer revolving speed, ηPnmaxFor the efficiency of maximum speed operating point, mi_maxFor motor modulation parameter, UBat,minFor minimum power source voltage, ΦN For electric moter voltage current phase angle, X1For the third coefficient, X2For the 4th coefficient.
Step 143 inputs the target component in the motor calculation efficiency calculation model, obtains the target component It is worth corresponding motor calculation efficiency.
Specifically, step 143 includes:
The first input parameter is obtained from the corresponding electric system of the motor type, the first input parameter includes: electricity Machine number of magnetic pole pairs, nominal torque correspond to revolving speed, the efficiency of maximum speed operating point, motor modulation parameter and electric moter voltage electric current phase Parallactic angle；
The second input parameter is obtained from Vehicular system, the second input parameter includes: minimum power source voltage；
The third input parameter is obtained, the third input parameter includes: third coefficient and the 4th coefficient；
Obtain the targeted parameter value；
By the first input parameter, the second input parameter, third input parameter and the targeted parameter value The mathematics computing model is inputted, the corresponding electric efficiency of the targeted parameter value that you can get it.
Wherein, the targeted parameter value includes first group of design parameter described in multiple groups.First group of design parameter described in multiple groups It is inputted in the motor calculation efficiency calculation model respectively as the targeted parameter value, obtains multiple motor calculation effects Rate.Different motor calculation efficiency corresponds to different first group of design parameters.
Step 15, the relationship according to corresponding with the motor type design parameter and motor weight determine each described Motor weight when the corresponding targeted parameter value is respectively adopted in design parameter.
Specifically, as shown in figure 5, step 15 the following steps are included:
Step 151, the relationship for obtaining corresponding with the motor type design parameter and motor weight.
Specifically, the corresponding design parameter of the motor type and motor weight are in a linear relationship.
The relationship of step 152, corresponding with the motor type design parameter and motor weight according to, establishes motor Weight computation model.
Specifically, being returned according to the relationship of corresponding with the motor type design parameter and motor weight It calculates, obtains the second estimation constant.The second estimation constant includes the first coefficient and the second coefficient.The second estimation constant It is obtained according to the corresponding design parameter of the motor type and the linear relationship of motor weight.The motor weight is according to formula ten Five calculate.
Formula 15:
mmotor=kTmax+m0
Wherein, mmotorFor the motor weight, TmaxFor the peak torque, k is first coefficient, m0It is described Two coefficients.
Step 153 inputs the targeted parameter value in the motor weight computation model, obtains the targeted parameter value Corresponding motor weight.
Specifically, inputting first peak torque value in the targeted parameter value in the formula 15 Obtain motor weight corresponding to the targeted parameter value.
Step 16, according to the motor calculation efficiency and motor weight, determine meet in the targeted parameter value vehicle fortune The motor optimal design parameters of row cost-effectiveness requirement.
Specifically, as shown in fig. 6, step 16 the following steps are included:
Step 161, according to the motor calculation efficiency and motor weight, calculate the unit mileage energy consumption of vehicle.
Specifically, calculate vehicle unit mileage energy consumption the following steps are included:
The first energy consumption calculation parameter is obtained, the first energy consumption calculation parameter includes: running time, driving force and traveling speed Degree；
In conjunction with the first energy consumption calculation parameter, the unit mileage energy consumption is calculated according to formula 16 and formula 17.
Formula 16:
Formula 17:
scycle=∫t∈tracv(t)dt
Wherein, t is the running time, and F is the driving force, and v is the travel speed, scycleFor the actual motion Operating condition total kilometrage, EtracFor the unit mileage energy consumption, ηmFor the motor calculation efficiency.
Wherein, the driving force calculating the following steps are included:
Obtain the second energy consumption calculation parameter, the second energy consumption calculation parameter include: coefficient of rolling resistance, air resistance coefficient, Front face area, climbable gradient, correction coefficient of rotating mass, the other component quality in addition to motor；
In conjunction with the second energy consumption calculation parameter, the driving force is calculated according to 18~formula of formula 23.
Formula 18:
F (t)=Ff(t)+Fw(t)+Fi(t)+Fj(t)
Formula 19:
Fi(t)=fMg
Formula 20:
Formula 21:
Fi(t)=Mgsin α
Formula 22:
Formula 23:
M=m+mmotor
Wherein, f is the coefficient of rolling resistance, CDFor the air resistance coefficient, A be the front face area, α is the climbing Degree, δ are the correction coefficient of rotating mass, and m is other component quality, the m in addition to motormotorFor the motor weight.
Step 162, in multiple unit mileage energy consumptions being calculated, obtain the smallest unit mileage energy consumption.
Targeted parameter value corresponding to step 163, the output the smallest unit mileage energy consumption, it is optimal as the motor Design parameter.
It is in the present embodiment, targeted parameter value corresponding to the minimum unit mileage energy consumption is defeated as optimal design parameters Out.The optimal design parameters of the output make vehicle reach unit mileage energy consumption minimum under the premise of dynamic property is required to meet, Economy optimization aim is optimal, improves the course continuation mileage of vehicle.
Power assembly of electric automobile characteristic parameter matching method provided in an embodiment of the present invention is produced according to the existing motor of same type The electric efficiency contour map of product, the motor calculation efficiency of design motor needed for obtaining, according to the design parameter of same type motor With the relationship of motor weight, the motor weight of design motor needed for determining, and then obtain economy and the optimal motor of dynamic property Optimal design parameters.The characteristic parameter matching method can use optimization thought in the schematic design phase, obtain meeting vehicle power The optimal design of electrical motor parameter of property and economy, not can be carried out vehicle power when solving the matched design of drive assembly parameter Property and economy emulate the problem of.
The embodiments of the present invention also provide a kind of power assembly of electric automobile parameter matching control apparatus, as shown in fig. 7, Include:
Design parameter range obtains module 71, the value range of at least design parameter for obtaining motor.
Preferably, the design parameter includes: that peak power, peak torque, nominal torque, maximum speed and retarder subtract Speed ratio.
Target component determining module 72 can satisfy in the value range for determining each design parameter whole The dynamic property of vehicle checks desired targeted parameter value.
Specifically, the target component determining module 72 includes:
First group of design parameter acquiring unit obtains institute for the value range according to each design parameter State first group of design parameter in value range.
Dynamic property checks unit, for carrying out dynamic property check to first group of design parameter.
Design parameter weight acquiring unit, for not meeting the requirement that the dynamic property is checked when first group of design parameter When, again according to the value range of each design parameter, obtain first group of design parameter, action edge of going forward side by side It checks.
Target component output unit, when for meeting the requirement of the dynamic property check when first group of design parameter, First group of design parameter is exported, as the targeted parameter value.
Preferably, the dynamic property checks unit, comprising:
Dynamic property requires to obtain subelement, and for obtaining the dynamic property requirement of vehicle, the dynamic property requires to include vehicle Three maximum speed, vehicle acceleration time and maximum climbable gradient of vehicle aspects.
Subelement is checked, for whether meeting the dynamic property requirement to first group of design parameter, is checked.
First checks judgement subelement, for meeting the vehicle maximum speed, vehicle when first group of design parameter When acceleration time and the equal requirement of maximum climbable gradient of vehicle, determine that first group of design parameter meets wanting for dynamic property check It asks.
Second checks judgement subelement, for being unsatisfactory for stating vehicle maximum speed, vehicle when first group of design parameter When the requirement of any of acceleration time and maximum climbable gradient of vehicle, it is described to determine that first group of design parameter is not met The requirement that dynamic property is checked.
Motor type determining module 73, for determining each design parameter using the corresponding targeted parameter value The motor type of Shi Suoshu target component.
Motor calculation efficiency determination module 74 is used for according to electric efficiency contour map corresponding with the motor type, Determine motor calculation efficiency when the corresponding targeted parameter value is respectively adopted in each design parameter.
Specifically, motor calculation efficiency determination module 74 includes:
Contour map acquiring unit, for obtaining electric efficiency contour map corresponding with the motor type.
First computation model establishes unit, for according to the electric efficiency contour corresponding with the motor type Figure, establishes motor calculation efficiency calculation model.
Motor calculation efficiency calculation unit, for inputting the target ginseng in the motor calculation efficiency calculation model Number, obtains the corresponding motor calculation efficiency of the target component.
Motor weight determining module 75, for the pass according to corresponding with the motor type design parameter and motor weight System, determines motor weight when the corresponding targeted parameter value is respectively adopted in each design parameter.
Specifically, motor weight determining module 75 includes:
Motor weight relationships acquiring unit, for obtaining design parameter corresponding with the motor type and motor weight Relationship.
Second computation model establishes unit, for according to the design parameter corresponding with the motor type and motor weight The relationship of amount establishes motor weight computation model.
Motor weight computing unit obtains institute for inputting the target component in the motor weight computation model State the corresponding motor weight of target component.
Motor optimal design parameters determining module 76, for determining institute according to the motor calculation efficiency and motor weight State the motor optimal design parameters for meeting vehicle performance driving economy requirement in targeted parameter value.
Power assembly of electric automobile parameter matching control apparatus provided in an embodiment of the present invention, according to the existing electricity of same type The electric efficiency contour map of machine product, the motor calculation efficiency of design motor needed for obtaining, according to the design of same type motor The relationship of parameter and motor weight, the motor weight of design motor needed for determining, and then it is optimal to obtain the optimal motor of economy Design parameter.Make the parameter matching in the schematic design phase, can use optimization thought, obtain meeting vehicle dynamic property and warp The optimal design of electrical motor parameter of Ji property, not can be carried out vehicle dynamic property and warp when solving the matched design of drive assembly parameter The problem of Ji property emulation.
The embodiments of the present invention also provide a kind of control equipment, comprising: memory, processor and storage are on a memory And the computer program that can be run on a processor, the processor are realized electronic as mentioned when executing the computer program Step in automobile power assembly characteristic parameter matching method.
Above-described is the preferred embodiment of the present invention, it should be pointed out that the ordinary person of the art is come It says, can also make several improvements and retouch under the premise of not departing from principle of the present invention, these improvements and modifications also exist In protection scope of the present invention.

Claims (10)

1. a kind of power assembly of electric automobile characteristic parameter matching method characterized by comprising
Obtain the value range of an at least design parameter for motor；
Determine that the dynamic property that can satisfy vehicle in the value range of each design parameter checks desired target ginseng Numerical value；
Determine motor type when the corresponding targeted parameter value is respectively adopted in each design parameter；
According to electric efficiency contour map corresponding with the motor type, determine that each design parameter is respectively adopted relatively Motor calculation efficiency when the targeted parameter value answered；
According to the relationship of corresponding with the motor type design parameter and motor weight, each design parameter difference is determined Motor weight when using the corresponding targeted parameter value；
According to the motor calculation efficiency and motor weight, determines and meet vehicle performance driving economy requirement in the targeted parameter value Motor optimal design parameters.
2. power assembly of electric automobile characteristic parameter matching method according to claim 1, which is characterized in that the design parameter It include: peak power, peak torque, nominal torque, maximum speed and retarder reduction ratio.
3. power assembly of electric automobile characteristic parameter matching method according to claim 2, which is characterized in that determine each described The dynamic property that can satisfy vehicle in the value range of design parameter checks desired targeted parameter value, comprising:
According to the value range of each design parameter, first group of design parameter in the value range is obtained；
Dynamic property check is carried out to first group of design parameter；
If first group of design parameter does not meet the requirement that the dynamic property is checked, again according to each design parameter The value range, obtain first group of design parameter, action edge of going forward side by side is checked；
If first group of design parameter meets the requirement that the dynamic property is checked, first group of design parameter is exported, is made For the targeted parameter value.
4. power assembly of electric automobile characteristic parameter matching method according to claim 3, which is characterized in that described first group Design parameter carries out dynamic property check, comprising:
The dynamic property requirement of vehicle is obtained, the dynamic property requires to include vehicle maximum speed, vehicle acceleration time and vehicle most Three aspects of big climbable gradient；
Whether the dynamic property requirement is met to first group of design parameter, is checked；
If first group of design parameter meets wanting for the vehicle maximum speed, vehicle acceleration time and maximum climbable gradient of vehicle It asks, then first group of design parameter meets the requirement of dynamic property check；
If first group of design parameter is unsatisfactory in the vehicle maximum speed, vehicle acceleration time and maximum climbable gradient of vehicle Either one or two of requirement, then first group of design parameter does not meet the requirement that the dynamic property is checked.
5. power assembly of electric automobile characteristic parameter matching method according to claim 2, which is characterized in that according to the electricity The corresponding electric efficiency contour map of machine type determines that the corresponding target component is respectively adopted in each design parameter Motor calculation efficiency when value, comprising:
Obtain electric efficiency contour map corresponding with the motor type；
According to the electric efficiency contour map corresponding with the motor type, motor calculation efficiency calculation model is established；
The target component is inputted in the motor calculation efficiency calculation model, obtains the corresponding motor of the targeted parameter value Computational efficiency.
6. power assembly of electric automobile characteristic parameter matching method according to claim 2, which is characterized in that according to the electricity The relational graph of machine type corresponding design parameter and motor weight determines that corresponding institute is respectively adopted in each design parameter State motor weight when targeted parameter value, comprising:
Obtain the relationship of corresponding with the motor type design parameter and motor weight；
According to the relationship of corresponding with the motor type design parameter and motor weight, establishes motor weight and calculate mould Type；
The targeted parameter value is inputted in the motor weight computation model, obtains the corresponding motor weight of the targeted parameter value Amount.
7. power assembly of electric automobile characteristic parameter matching method according to claim 2, which is characterized in that according to the motor Computational efficiency and motor weight determine the motor optimal design ginseng for meeting vehicle performance driving economy requirement in the targeted parameter value Number, comprising:
According to the motor calculation efficiency and motor weight, the unit mileage energy consumption of vehicle is calculated；
In multiple unit mileage energy consumptions being calculated, the smallest unit mileage energy consumption is obtained；
Targeted parameter value corresponding to the smallest unit mileage energy consumption is exported, as the motor optimal design parameters.
8. a kind of power assembly of electric automobile parameter matching control apparatus characterized by comprising
Design parameter range obtains module, the value range of at least design parameter for obtaining motor；
Target component determining module can satisfy the dynamic of vehicle in the value range for determining each design parameter Power checks desired targeted parameter value；
Motor type determining module, when for determining that the corresponding targeted parameter value is respectively adopted in each design parameter Motor type；
Motor calculation efficiency determination module, for determining every according to electric efficiency contour map corresponding with the motor type Motor calculation efficiency when the corresponding targeted parameter value is respectively adopted in one design parameter；
Motor weight determining module, for the relationship according to corresponding with the motor type design parameter and motor weight, really Motor weight when the corresponding targeted parameter value is respectively adopted in fixed each design parameter；
Motor optimal design parameters determining module, for determining the target according to the motor calculation efficiency and motor weight Meet the motor optimal design parameters of vehicle performance driving economy requirement in parameter value.
9. power assembly of electric automobile parameter matching control apparatus according to claim 8, which is characterized in that the design Parameter includes: peak power, peak torque, nominal torque, maximum speed and retarder reduction ratio.
10. a kind of control equipment characterized by comprising memory, processor and storage are on a memory and can be in processor The computer program of upper operation, the processor are realized as described in any one of claim 1~7 when executing the computer program Power assembly of electric automobile characteristic parameter matching method in step.
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