CN108128131A - Electric vehicle distribution wheel side electric drive power assembly and method - Google Patents
Electric vehicle distribution wheel side electric drive power assembly and method Download PDFInfo
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- CN108128131A CN108128131A CN201810119482.0A CN201810119482A CN108128131A CN 108128131 A CN108128131 A CN 108128131A CN 201810119482 A CN201810119482 A CN 201810119482A CN 108128131 A CN108128131 A CN 108128131A
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000009826 distribution Methods 0.000 title claims abstract description 14
- 230000000712 assembly Effects 0.000 claims abstract description 28
- 238000000429 assembly Methods 0.000 claims abstract description 28
- 238000009434 installation Methods 0.000 claims abstract description 14
- 230000001133 acceleration Effects 0.000 claims description 17
- 238000005457 optimization Methods 0.000 claims description 7
- 238000004364 calculation method Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 230000009194 climbing Effects 0.000 claims description 2
- 230000005484 gravity Effects 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000003137 locomotive effect Effects 0.000 description 2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/02—Arrangement or mounting of electrical propulsion units comprising more than one electric motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
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Abstract
The invention discloses a kind of electric vehicle distribution wheel side electric drive power assembly and methods.In power assembly, two-in-one retarder be internally provided with the non-interference The gear deceleration structure of two structures, pass through housing integrative installation technology；First motor and the second motor are symmetrically arranged in the left side of two-in-one retarder and right side, and connect the input shaft of two The gear deceleration structures in two-in-one retarder respectively；The first half axle assemblies and the second half axle assemblies are respectively placed in the left side and right side of two-in-one retarder, and one end connects the output shaft of two The gear deceleration structures in two-in-one retarder respectively, and the other end connects the first wheel and the second wheel respectively；The output shaft of each The gear deceleration structure is parallel with input shaft but not conllinear in two-in-one retarder；Entire power assembly is distributed along the median plane of two-in-one retarder in mirror symmetry.The present invention is a kind of possible arrangement scheme of the electric vehicle using wheel motor driving power assembly, has the characteristics that compact-sized, simple installation.
Description
Technical field
The invention belongs to electric vehicle equipment technical fields, and in particular to a kind of electric vehicle distribution wheel side electric drive is moved
Power assembly and method.
Background technology
The drive form of next-generation automobile necessarily using the distributed driving of wheel hub/wheel motor, can improve transmission
Efficiency simplifies chassis structure, improves power performance, economy and stability, and wheel motor application technology is come compared with wheel hub motor
It says relative maturity, is the preferred option for promoting distributed-driving electric automobile commercialization.It is driven especially with high-speed electric expreess locomotive wheel side
Dynamic, motor volume smaller, cost are lower.But a slowdown module is needed to configure, therefore increase reducing gear using high-speed electric expreess locomotive
The difficulty of wheel design, manufacture and power assembly integral arrangement.Therefore, this patent proposes point of integrated motor, a retarder etc.
Cloth wheel side electric drive power assembly, is simple to manufacture, is of low cost, characteristics of compact layout, simple installation, is conducive to distributed driving electricity
The industrialization promotion application of electrical automobile.
Invention content
Feasible matching the purpose of the present invention is to provide a kind of electric vehicle distribution wheel side electric drive power assembly is set
Meter and arrangement, and fully consider the design of electric vehicle, manufacture, installation, the actual conditions used, there is power assembly
The advantages of simple installation, integral strength are high, manufacture is at low cost, and this set power assembly can reach the power performance of electric vehicle
It is optimal to synthesis.
Specific technical solution of the present invention is as follows：
Electric vehicle distribution wheel side electric drive power assembly, including the first wheel, the first motor, two-in-one retarder,
Second motor, the second wheel, the second half axle assemblies, the first half axle assemblies；The two-in-one retarder is internally provided with two knots
The non-interference The gear deceleration structure of structure, passes through housing integrative installation technology；First motor and the second motor be symmetrically arranged in
The left side and right side of two-in-one retarder, and the input shaft of two The gear deceleration structures in two-in-one retarder is connected respectively；The
Half axle assembly and the second half axle assemblies are respectively placed in the left side and right side of two-in-one retarder, and one end connects two-in-one subtract respectively
The output shaft of two The gear deceleration structures in fast device, the other end connect the first wheel and the second wheel respectively；Two-in-one retarder
In each The gear deceleration structure output shaft it is parallel with input shaft but not collinearly；Entire power assembly is along two-in-one retarder
Median plane is distributed in mirror symmetry.
Preferably, the first motor, the second motor input with two The gear deceleration structures in two-in-one retarder respectively
Axis spline connects.
Preferably, the first half axle assemblies, the second half axle assemblies respectively with two The gear deceleration knots in two-in-one retarder
The output shaft spline connection of structure.
Preferably, the first half axle assemblies, the second half axle assemblies are keyed respectively with the first wheel, the second wheel flower.
Preferably, being respectively provided with an installation supporting point on the outside of the first motor and the second motor, set on two-in-one retarder
There are two installation supporting point, entire power assembly set altogether there are four installation supporting point.
Preferably, power assembly is in two rows of Parallel Designs, first motor and the second motor are in a row, the first half
Axle assembly and the second half axle assemblies are into another row.
Another object of the present invention is to provide a kind of motor to above-mentioned power assembly and retarder carry out parameter matching,
The method of optimization, the retarder parameter are retarder gearratio, and method and step is as follows：
1) m feasible gearratio i are selected in the range of the restriction of retarder gearratioj, j ∈ [1,2 ..., m], from small to large
Respectively i1、i2、……、im；
2) different drive ratios i is calculated respectivelyjThe power property arguments of corresponding electric vehicle, power property arguments are included most
High speed vmax, max. climb slope αmax, 0-100km/h acceleration time t, the power property arguments, the parameter of electric machine and retarder
Relationship between parameter meets a)~d)：
A) the peak power P of driving motormaxIt must not drop below required power of motor P during electric vehicle max. speedmax,v、
Required power of motor P during max. climb slopemax,αAnd power of motor P needed for the most short 0-100km/h acceleration timemax,t, wherein：
PmaxNm≥max{Pmax,v,Pmax,α,Pmax,t}
B) the peak torque T of driving motormaxIt must not drop below required motor torque T during electric vehicle max. speedmax,v、
Required motor torque T during max. climb slopemax,αAnd motor torque T needed for the most short 0-100km/h acceleration timemax,t, wherein：
TmaxNm≥max{Tmax,v,Tmax,α,Tmax,t}
C) the peak speed n of driving motormaxMotor speed required during electric vehicle max. speed is must not drop below,
In：
D) the gearratio i of retarder must not drop below the transmission determined by motor peak speed and electric vehicle max. speed
Compare imin；Running resistance when must be not more than by the corresponding torque capacity of motor peak speed point and electric vehicle max. speed
The gearratio i of decisionmax1；It must be not more than and be determined by motor peak torque and running resistance during electric vehicle max. climb slope
Gearratio imax2, wherein：
imin≤i≤min{imax1,imax2}
Wherein, TnmaxFor the corresponding torque capacity of motor peak speed point, calculation formula is：
In above-mentioned formula：mtFor electric vehicle kerb weight；M is fully loaded with quality for electric vehicle；G is acceleration of gravity；F is rolling
Dynamic resistance coefficient；CDFor coefficient of air resistance；A is front face area；ηtFor drive line efficiency；I is retarder middle gear slowing-down structure
Gearratio, take i successively1、i2、……、im；R is vehicle wheel roll radius；NmTo be used to drive the motor of wheel on electric vehicle
Quantity；vmaxFor max. speed；viFor speed of climbing；αmaxFor max. climb slope；vtTo correspond to speed after accelerating the t times；T is hundred
The kilometer acceleration time；δ is gyrating mass coefficient；
3) using multiple-objection optimization method, by max. speed vmax, max. climb slope αmax, 0-100km/h acceleration time t difference
As three object function f1(X)、f2(X)、f3(X), by gearratio ijCorresponding target function value fkj(X) it represents, k=
1,2,3；
4) nondimensionalization processing is done to three target function values：
Wherein,
5) m feasible gearratio i are calculatedjCorresponding integrated objective function：
Wherein, wkFor object function fk' (X) weighting coefficient,And w1＞ 0, w2＞ 0, w3＜ 0；
6) integrated objective function F is takenj(X) the maximum corresponding gearratio i of valuejFor setting for electric vehicle middle gear slowing-down structure
Count gearratio i.
Preferably, to different feasible gearratio ijWhen calculating integrated objective function, the weighting coefficient wkValue is protected
It holds constant.
The present invention in terms of existing technologies, has the advantages that：
1st, after increasing retarder, the rotating speed of motor is exported by output, torque after scale smaller after ratio enlargement, therefore
The input current of motor can be reduced in actual use, reduce the output current of battery, the heavy-current discharge of battery can be avoided,
Effectively extend the service life of battery, while also reduce the design difficulty of vehicle high-pressure system.
2nd, the present invention is a kind of possible arrangement scheme that electric vehicle wheel motor drives power assembly, compact-sized, peace
Dress is easy, is suitble to be widely used on the distributed-driving electric automobile of mass production；
3rd, since retarder is two-in-one design, the drive assembly being made of two motors and a two-in-one retarder can
With integrative installation technology, have the advantages that intensity is high, antitorque resistance to shock is good；
4th, since retarder input and output are not coaxial, Design of Speed Reducer, manufacture is easy, the selectable range of gearratio is larger
The characteristics of, it can greatly reduce the design production cost of deceleration mechanism in wheel motor drive assembly.
5th, the parameter and type selecting of motor, retarder are determined by matching primitives and Multipurpose Optimal Method, makes electric vehicle
Power performance reach synthesis it is optimal.
Description of the drawings
Fig. 1 is electric vehicle distribution wheel side electric drive power assembly vertical view.
In figure：First wheel 1, the first motor 2, two-in-one retarder 3, the second motor 4, the second wheel 5, the second semiaxis are total
Into 6, the first half axle assemblies 7.
Specific embodiment
The present invention is further elaborated and illustrated below in conjunction with the accompanying drawings.
With reference to attached drawing 1, a kind of electric vehicle distribution wheel side electric drive power assembly, including the first wheel 1, the first motor
2nd, two-in-one retarder 3, the second motor 4, the second wheel 5, the second half axle assemblies 6, the first half axle assemblies 7.Two-in-one retarder 3
Inside is two symmetrical The gear deceleration structures, and two structures are non-interference, are only installed together by housing.Two gears subtract
Fast structure is in mirror symmetry, and the input shaft and output shaft of the two are respectively arranged at the both sides of two-in-one retarder 3.First motor 2
It is symmetrically arranged with the second motor 4 in the left side and right side of two-in-one retarder 3, the first motor 2 connects two-in-one retarder 3
The input shaft of middle left side gear slowing-down structure, the second motor 4 connect the input of right side gear slowing-down structure in two-in-one retarder 3
Axis.The first half axle assemblies 7 and the second half axle assemblies 6 are located at 4 lower section of the first motor 2 and the second motor, and be respectively placed in two-in-one
The left side and right side of retarder 3.The first half 7 one end of axle assembly connect the defeated of left side gear slowing-down structure in two-in-one retarder 3
Shaft, the other end connect the first wheel 1, for by the power transmission of the first motor 2 to the first wheel 1；The second half axle assemblies 6 one
End connects the output shaft of right side gear slowing-down structure in two-in-one retarder 3, and the other end connects the second wheel 5, for by second
The power transmission of motor 4 is to the second wheel 5.The output shaft of each The gear deceleration structure and input shaft are equal in two-in-one retarder 3
Parallel but not conllinear, entire power assembly is distributed along the median plane of two-in-one retarder 3 in mirror symmetry.Power assembly is in two rows
Parallel Design, first motor 2 and the second motor 4 are in a row, and the first half axle assemblies 7 and the second half 6 one-tenth of axle assemblies are another
Row.
Spline connection may be used in connection mode between each equipment, i.e. the first motor 2, the second motor 4 close respectively with two
The input shaft spline connection of two The gear deceleration structures in one speed reducer 3.The first half axle assemblies 7, the second half axle assemblies 6 respectively with
The output shaft spline connection of two The gear deceleration structures in two-in-one retarder 3.The first half axle assemblies 7, the second half axle assemblies 6 divide
It is not connect with the first wheel 1,5 spline of the second wheel.When installing the power assembly on electric vehicle, the first motor 2 and second
The outside of motor 4 can be respectively provided with an installation supporting point, can set that there are two installation supporting point, entire power on two-in-one retarder 3
Assembly installs supporting point there are four setting altogether.
The front-wheel, trailing wheel or front and back wheel that this power assembly can be used for electric vehicle use simultaneously, and vehicle is driven in motor
When driving, two or four motor generates power simultaneously, and by taking the power assembly of a wheel as an example, side motor generates rotating speed
With torque, the side gear reduction of two-in-one retarder is transferred to, rotating speed and torque are passed through fixed proportion by deceleration mechanism
Half axle assembly of output terminal is transferred to after transformation, and passes through the wheel that half axle assembly is transferred to the same side.
The motor and retarder of this power assembly need to carry out parameter matching, optimization.
The symbol and its definition being related to below are as shown in table 1.
1 motor of table and each symbol definition of retarder characteristic parameter matching method
First, the relationship between power property arguments, the parameter of electric machine and retarder parameter need to meet a)~d)：
A) the peak power P of driving motormaxIt must not drop below required power of motor P during electric vehicle max. speedmax,v、
Required power of motor P during max. climb slopemax,αAnd power of motor P needed for the most short 0-100km/h acceleration timemax,t。
PmaxNm≥max{Pmax,v,Pmax,α,Pmax,t}
B) the peak torque T of driving motormaxIt must not drop below required motor torque T during electric vehicle max. speedmax,v、
Required motor torque T during max. climb slopemax,αAnd motor torque T needed for the most short 0-100km/h acceleration timemax,t。
TmaxNm≥max{Tmax,v,Tmax,α,Tmax,t}
Wherein, NmDepending on the driving motor quantity carried in electric vehicle, such as before the power assembly is only used for
When wheel or trailing wheel, NmIt is 2, when front and back wheel is respectively equipped with a power assembly, NmIt is 4.
C) the peak speed n of driving motormaxIt must not drop below motor speed required during electric vehicle max. speed.
D) the gearratio i of retarder must not drop below the transmission determined by motor peak speed and electric vehicle max. speed
Compare imin；Running resistance when must be not more than by the corresponding torque capacity of motor peak speed point and electric vehicle max. speed
The gearratio i of decisionmax1；It must be not more than and be determined by motor peak torque and running resistance during electric vehicle max. climb slope
Gearratio imax2。
imin≤i≤min{imax1,imax2}
Wherein, TnmaxFor the corresponding torque capacity of motor peak speed point：
It can be seen that there are correlativity between power property arguments, the parameter of electric machine and retarder parameter, therefore according to not
Same retarder gearratio and the parameter of electric machine can calculate the power property arguments of electric vehicle, available for subsequent parameter
Matching, optimization.
Based on it is above-mentioned a)~d) in correlation formula, specific motor and retarder characteristic parameter matching method step are as follows：
1) retarder parameter refers mainly to retarder gearratio.M feasible biographies are selected in the range of the restriction of retarder gearratio
Ratio is moved, from small to large respectively i1、i2、……、im.Feasible gearratio needs to consider the feasibility of Machine Design, and intensive as possible
It covers entire retarder gearratio and limits range, to search out optimal gearratio as far as possible.
2) different drive ratios i is calculated respectivelyjThe power property arguments of corresponding electric vehicle, power property arguments are included most
High speed vmax, max. climb slope αmax, 0-100km/h acceleration time t, calculation formula and a)~d) in it is consistent.
3) using multiple-objection optimization method, by max. speed vmax, max. climb slope αmax, 0-100km/h acceleration time t difference
As three object function f1(X)、f2(X)、f3(X), by gearratio ijCorresponding target function value fkj(X) it represents, k=
1,2,3；
4) nondimensionalization processing is done to three target function values：
Wherein,
5) m feasible gearratio i are calculatedjCorresponding integrated objective function：
Wherein, wkFor object function fk' (X) weighting coefficient,And to max. speed, max. climb slope (number
Value is bigger to illustrate that scheme is more excellent) for, wkPositive value is taken, the 0-100km/h acceleration time (numerical value is smaller to illustrate that scheme is more excellent) is come
It says, wkTake negative value.That is w1＞ 0, w2＞ 0, w3＜ 0.
The value of weighting coefficient influences whether final integrated objective function value, and specific value can be according to manufacturer for electricity
Electrical automobile performance stresses to be adjusted, i.e. max. speed vmax, max. climb slope αmax, 0-100km/h acceleration time t threes
In, more stress a certain performance, then need its weight being turned up accordingly.In addition, in order to make different integrated objective functions
Value is with reference to meaning, to different feasible gearratio ijWhen calculating integrated objective function, three weighting coefficient wkValue need to protect always
It holds constant.
6) integrated objective function F finally, is takenj(X) the maximum corresponding gearratio i of valuejFor electric vehicle middle gear slowing-down structure
Optimal design gearratio i.
By the matching primitives and Multipurpose Optimal Method, the vehicle can be determined according to the various parameters in calculating process
The motor carried, the parameter and model of retarder are needed in, the power performance of electric vehicle is made to reach comprehensive optimal.
Claims (8)
1. a kind of electric vehicle distribution wheel side electric drive power assembly, it is characterised in that：Including the first wheel (1), the first electricity
Machine (2), two-in-one retarder (3), the second motor (4), the second wheel (5), the second half axle assemblies (6), the first half axle assemblies
(7)；The two-in-one retarder (3) is internally provided with the non-interference The gear deceleration structure of two structures, passes through housing one
Change installation；First motor (2) is symmetrically arranged with the second motor (4) in the left side and right side of two-in-one retarder (3), and point
The input shaft of two The gear deceleration structures in two-in-one retarder (3) is not connected；The first half axle assemblies (7) and the second half axle assemblies
(6) left side and right side of two-in-one retarder (3) are respectively placed in, one end connects two gears in two-in-one retarder (3) respectively
The output shaft of slowing-down structure, the other end connect the first wheel (1) and the second wheel (5) respectively；It is each in two-in-one retarder (3)
The output shaft of The gear deceleration structure is parallel with input shaft but not conllinear；Entire power assembly is along two-in-one retarder (3)
Heart face is distributed in mirror symmetry.
2. electric vehicle distribution wheel side as described in claim 1 electric drive power assembly, it is characterised in that：First motor
(2), input shaft spline of the second motor (4) respectively with two The gear deceleration structures in two-in-one retarder (3) is connect.
3. electric vehicle distribution wheel side as described in claim 1 electric drive power assembly, it is characterised in that：First semiaxis is total
It is connect into (7), the second half output shaft splines of the axle assembly (6) respectively with two The gear deceleration structures in two-in-one retarder (3).
4. electric vehicle distribution wheel side as described in claim 1 electric drive power assembly, it is characterised in that：First semiaxis is total
It is connect respectively with the first wheel (1), the second wheel (5) spline into (7), the second half axle assemblies (6).
5. electric vehicle distribution wheel side as described in claim 1 electric drive power assembly, it is characterised in that：First motor
(2) supporting point is installed with being respectively provided with one on the outside of the second motor (4), is set on two-in-one retarder (3) there are two installation supporting point,
Entire power assembly installs supporting point there are four setting altogether.
6. electric vehicle distribution wheel side as described in claim 1 electric drive power assembly, it is characterised in that：Power assembly is in
Two rows of Parallel Designs, first motor (2) and the second motor (4) are in a row, and the first half axle assemblies (7) and the second semiaxis are total
Into (6) into another row.
7. a kind of motor and retarder to power assembly described in claim 1 carries out the method for parameter matching, optimization, feature
It is, the retarder parameter is retarder gearratio, and method and step is as follows：
1) m feasible gearratio i are selected in the range of the restriction of retarder gearratioj, j ∈ [1,2 ..., m] are respectively from small to large
i1、i2、……、im；
2) different drive ratios i is calculated respectivelyjThe power property arguments of corresponding electric vehicle, power property arguments include highest vehicle
Fast vmax, max. climb slope αmax, 0-100km/h acceleration time t, the power property arguments, the parameter of electric machine and retarder parameter
Between relationship meet a)~d)：
A) the peak power P of driving motormaxIt must not drop below required power of motor P during electric vehicle max. speedmax,v, it is maximum
Required power of motor P during climbable gradientmax,αAnd power of motor P needed for the most short 0-100km/h acceleration timemax,t, wherein：
PmaxNm≥max{Pmax,v,Pmax,α,Pmax,t}
B) the peak torque T of driving motormaxIt must not drop below required motor torque T during electric vehicle max. speedmax,v, it is maximum
Required motor torque T during climbable gradientmax,αAnd motor torque T needed for the most short 0-100km/h acceleration timemax,t, wherein：
TmaxNm≥max{Tmax,v,Tmax,α,Tmax,t}
C) the peak speed n of driving motormaxMotor speed required during electric vehicle max. speed is must not drop below, wherein：
D) the gearratio i of retarder must not drop below the gearratio determined by motor peak speed and electric vehicle max. speed
imin；It must be not more than and be determined by the corresponding torque capacity of motor peak speed point with running resistance during electric vehicle max. speed
Fixed gearratio imax1；What running resistance when must be not more than by motor peak torque and electric vehicle max. climb slope determined
Gearratio imax2, wherein：
imin≤i≤min{imax1,imax2}
Wherein, TnmaxFor the corresponding torque capacity of motor peak speed point, calculation formula is：
In above-mentioned formula：mtFor electric vehicle kerb weight；M is fully loaded with quality for electric vehicle；G is acceleration of gravity；F is hindered to roll
Force coefficient；CDFor coefficient of air resistance；A is front face area；ηtFor drive line efficiency；I is the biography of retarder middle gear slowing-down structure
Dynamic ratio, takes i successively1、i2、……、im；R is vehicle wheel roll radius；NmTo be used to drive the number of motors of wheel on electric vehicle；
vmaxFor max. speed；viFor speed of climbing；αmaxFor max. climb slope；vtTo correspond to speed after accelerating the t times；T adds for hundred kilometers
The fast time；δ is gyrating mass coefficient；
3) using multiple-objection optimization method, by max. speed vmax, max. climb slope αmax, 0-100km/h acceleration time t respectively as
Three object function f1(X)、f2(X)、f3(X), by gearratio ijCorresponding target function value fkj(X) it represents, k=1,2,
3；
4) nondimensionalization processing is done to three target function values：
Wherein,
5) m feasible gearratio i are calculatedjCorresponding integrated objective function：
Wherein, wkFor object function fk' (X) weighting coefficient,And w1＞ 0, w2＞ 0, w3＜ 0；
6) integrated objective function F is takenj(X) the maximum corresponding gearratio i of valuejDesign for electric vehicle middle gear slowing-down structure passes
It is dynamic to compare i.
8. the method for claim 7, which is characterized in that different feasible gearratio ijWhen calculating integrated objective function,
The weighting coefficient wkValue remains unchanged.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109033531A (en) * | 2018-06-28 | 2018-12-18 | 浙江大学 | A kind of electric powered motor matching optimization method based on multiple objective programming |
| WO2020058101A1 (en) * | 2018-09-19 | 2020-03-26 | Zf Friedrichshafen Ag | Axle drive |
| CN111391635A (en) * | 2020-03-27 | 2020-07-10 | 上海电气集团股份有限公司 | Dual-control motor power assembly and electric automobile |
| CN113954614A (en) * | 2021-09-22 | 2022-01-21 | 江苏英拓动力科技有限公司 | Method for increasing the power density of an electric drive train and drive train using said method |
| WO2023024451A1 (en) * | 2021-08-24 | 2023-03-02 | 华为技术有限公司 | Power assembly and electric vehicle |
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Application publication date: 20180608 |