CN106853820A - The control method and system of motor vehicle driven by mixed power multi power source distribution - Google Patents
The control method and system of motor vehicle driven by mixed power multi power source distribution Download PDFInfo
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- CN106853820A CN106853820A CN201510902472.0A CN201510902472A CN106853820A CN 106853820 A CN106853820 A CN 106853820A CN 201510902472 A CN201510902472 A CN 201510902472A CN 106853820 A CN106853820 A CN 106853820A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/06—Combustion engines, Gas turbines
- B60W2510/0604—Throttle position
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/06—Combustion engines, Gas turbines
- B60W2510/0638—Engine speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/10—Change speed gearings
- B60W2510/1005—Transmission ratio engaged
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/24—Energy storage means
- B60W2510/242—Energy storage means for electrical energy
- B60W2510/244—Charge state
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2520/00—Input parameters relating to overall vehicle dynamics
- B60W2520/10—Longitudinal speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/06—Combustion engines, Gas turbines
- B60W2710/0666—Engine torque
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/08—Electric propulsion units
- B60W2710/083—Torque
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- 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
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- 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
- Y02T10/62—Hybrid vehicles
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- Combustion & Propulsion (AREA)
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Abstract
The present invention discloses a kind of control method and system of the distribution of motor vehicle driven by mixed power multi power source, and control method includes：Determine the peak torque that present engine can be output, the peak torque that motor can be output；According to current shift, engine speed or speed and accelerator pedal aperture, aggregate demand moment of torsion is determined；When aggregate demand moment of torsion is less than the peak torque that engine can be output, power generation torque is determined according to electrokinetic cell electricity and aggregate demand moment of torsion, with aggregate demand moment of torsion sum as engine demand moment of torsion, the negative value of power generation torque is used as motor demand torque for power generation torque；When aggregate demand moment of torsion is more than the peak torque that engine can be output, determined to drive distribution moment of torsion according to electrokinetic cell electricity and aggregate demand moment of torsion, aggregate demand moment of torsion subtracts driving distribution moment of torsion as engine demand moment of torsion, drives distribution moment of torsion as motor demand torque.The present invention realizes accelerating, preferably discharge and fuel economy preferably in dynamic property and comprehensive driving cycle during climbing.
Description
Technical field
Moved the present invention relates to motor vehicle driven by mixed power control field, more particularly to a kind of motor vehicle driven by mixed power more
The control method and system of power source distribution.
Background technology
Motor vehicle driven by mixed power refers to that driver for vehicle can be while the drivetrain for operating by two or more
The vehicle that system is constituted jointly, the road horsepower of vehicle can be by a drive according to actual vehicle running state
Dynamic system is provided separately or is provided jointly by multiple drive systems.
Usually said motor vehicle driven by mixed power, generally refers to hybrid vehicle, i.e., using tradition
Internal combustion engine and motor as power source.
The control method distributed for motor vehicle driven by mixed power multi power source, it is necessary to consider factors, than
Such as transport condition of vehicle, the charged state of battery, the demand of driver.
The control method of known some motor vehicle driven by mixed power multi power sources distribution, is to try to demand more
Moment of torsion distributes to motor, and allows engine to play the part of complementary role.But for certain form of car
, such as these heavy goods vehicles of car, motor may be insufficient as main power source and provide torsion in itself
Square, and still need by engine as main power source, motor is then as the power source of auxiliary.
At this moment, it is necessary to a kind of motor vehicle driven by mixed power multi power source distribution that can adapt to such hardware setting
Control method and system.
The content of the invention
Technical problem solved by the invention is to overcome at least one defect of the prior art, is carried
For the control method and system of a kind of distribution of motor vehicle driven by mixed power multi power source.
The present invention solves above-mentioned technical problem by the following technical programs.
A kind of control method of motor vehicle driven by mixed power multi power source distribution, comprises the following steps：
Determine the peak torque that engine can be output under current state, and motor institute under current state
The peak torque that can be exported；
According to current shift, engine speed or speed and accelerator pedal aperture, it is determined that current is total
Demand torque；And
Compare the peak torque that aggregate demand moment of torsion can be output with engine, with based on comparative result and root
Engine demand moment of torsion and motor are determined respectively according to current electrokinetic cell electricity and the aggregate demand moment of torsion
Demand torque；
When the aggregate demand moment of torsion is less than the peak torque that the engine can be output, according to current
Electrokinetic cell electricity and the aggregate demand moment of torsion determine power generation torque, the power generation torque is total with described
, used as the engine demand moment of torsion, the negative value of the power generation torque is used as the electricity for demand torque sum
Machine demand torque；And
When the aggregate demand moment of torsion is more than the peak torque that the engine can be output, according to current
Electrokinetic cell electricity and the aggregate demand moment of torsion determine to drive distribution moment of torsion, the aggregate demand moment of torsion subtracts
Described driving is gone to distribute moment of torsion as the engine demand moment of torsion, the driving distributes moment of torsion as institute
State motor demand torque.
It is preferred that determining that the peak torque that engine can be output under current state includes：
The preferable maximum characteristic moment of torsion of storage engine and engine continuous operation maximum are turned round in the controller
Square；It is actually defeated that engine actual torque obtains engine divided by the preferable maximum characteristic moment of torsion of the engine
Go out rate of load condensate；Mean value calculation is carried out to the engine reality output rate of load condensate；Started according to described
The average value of machine reality output rate of load condensate, determines the peak torque that the engine can be output, described
The peak torque that engine can be output is started between the preferable maximum characteristic moment of torsion of the engine with described
Between machine continuous service peak torque.
It is preferred that determining that the peak torque that motor can be output includes：
The preferable maximum characteristic moment of torsion of motor and motor continuous service peak torque are stored in the controller；Electricity
Machine actual torque obtains motor reality output rate of load condensate divided by the preferable maximum characteristic moment of torsion of the motor；It is right
The motor reality output rate of load condensate carries out mean value calculation；According to the motor reality output rate of load condensate
Average value, determine the current peak torque of the motor, the current peak torque of motor is between described
Between the preferable maximum characteristic moment of torsion of motor and the motor continuous service peak torque, the motor is worked as
The peak torque that preceding peak torque can be output as motor.
It is preferred that determining that the peak torque that the motor can be output is further included：
Input and current motor rotating speed according to battery management system, determine the power of battery to the motor
The limits value of the peak torque that can be output；By the current peak torque of the motor and the power of battery to institute
State the peak torque limits value that motor can be output and take small, be defined as final motor and can be output most
High pulling torque.
It is preferred that the aggregate demand moment of torsion includes basal needs moment of torsion and power-assisted demand torque, wherein,
The peak torque that the basal needs moment of torsion can be output with engine as the upper limit, according to engine speed
Or the peak torque that speed, accelerator pedal aperture and the engine can be output is obtained；It is described to help
The peak torque that power demand torque can be output with the motor as the upper limit, according to engine speed or car
The peak torque that speed, accelerator pedal aperture and the motor can be output is obtained.
A kind of control system of motor vehicle driven by mixed power multi power source distribution, wherein, it includes engine institute
Peak torque determining module, aggregate demand that the peak torque determining module of energy output, motor can be output
Torque determination module, moment of torsion distribute module；Wherein：
The peak torque determining module that the engine can be output is used to determine engine under current state
The peak torque that can be output；
The peak torque determining module that the motor can be output is used to determine motor institute energy under current state
The peak torque of output；
The aggregate demand torque determination module be used for according to current shift, engine speed or speed and
Accelerator pedal aperture, it is determined that current aggregate demand moment of torsion；
The moment of torsion distribute module is used to compare the maximum torsion that aggregate demand moment of torsion can be output with engine
Square, with based on comparative result and true respectively according to current electrokinetic cell electricity and the aggregate demand moment of torsion
Determine engine demand moment of torsion and motor demand torque；
In the moment of torsion distribute module, engine demand moment of torsion and motor demand are determined in the following manner
Moment of torsion：
When the aggregate demand moment of torsion is less than the peak torque that the engine can be output, according to current
Electrokinetic cell electricity and the aggregate demand moment of torsion determine power generation torque, the power generation torque is total with described
, used as the engine demand moment of torsion, the negative value of the power generation torque is used as the electricity for demand torque sum
Machine demand torque；And
When the aggregate demand moment of torsion is more than the peak torque that the engine can be output, according to current
Electrokinetic cell electricity and the aggregate demand moment of torsion determine to drive distribution moment of torsion, the aggregate demand moment of torsion subtracts
Described driving is gone to distribute moment of torsion as the engine demand moment of torsion, the driving distributes moment of torsion as institute
State motor demand torque.
It is preferred that in the peak torque determining module that the engine can be output, in the following manner
Determine the peak torque that the engine can be output：
The preferable maximum characteristic moment of torsion of storage engine and engine continuous operation maximum are turned round in the controller
Square；It is actually defeated that engine actual torque obtains engine divided by the preferable maximum characteristic moment of torsion of the engine
Go out rate of load condensate；Mean value calculation is carried out to the engine reality output rate of load condensate；Started according to described
The average value of machine reality output rate of load condensate, determines the peak torque that the engine can be output, described
The peak torque that engine can be output is started between the preferable maximum characteristic moment of torsion of the engine with described
Between machine continuous service peak torque.
It is preferred that in the peak torque determining module that the motor can be output, in the following manner really
Determine the peak torque that motor can be output：
The preferable maximum characteristic moment of torsion of motor and motor continuous service peak torque are stored in the controller；Electricity
Machine actual torque obtains motor reality output rate of load condensate divided by the preferable maximum characteristic moment of torsion of the motor；It is right
The motor reality output rate of load condensate carries out mean value calculation；According to the motor reality output rate of load condensate
Average value, determine the current peak torque of the motor, the current peak torque of motor is between described
Between the preferable maximum characteristic moment of torsion of motor and the motor continuous service peak torque, the motor is worked as
The peak torque that preceding peak torque can be output as motor.
It is preferred that in the peak torque determining module that the motor can be output, entering in the following manner
One step determines the peak torque that motor can be output：
Input and current motor rotating speed according to battery management system, determine the power of battery to the motor
The limits value of the peak torque that can be output；By the current peak torque of the motor and the power of battery to institute
State the peak torque limits value that motor can be output and take small, be defined as final motor and can be output most
High pulling torque.
It is preferred that in the aggregate demand torque determination module, aggregate demand moment of torsion is determined in the following manner：
The aggregate demand moment of torsion includes basal needs moment of torsion and power-assisted demand torque, wherein, the basis
The peak torque that demand torque can be output with engine as the upper limit, according to engine speed or speed,
The peak torque that accelerator pedal aperture and the engine can be output is obtained；The power-assisted demand is turned round
The peak torque that square can be output with the motor as the upper limit, according to engine speed or speed, acceleration
The peak torque that pedal aperture and the motor can be output is obtained.
The positive effect of the present invention is：By consider driver demand and electrokinetic cell electricity come
Moment of torsion between distribution engine and motor, realizes accelerating, preferable dynamic property and comprehensive during climbing
Close preferable discharge and fuel economy in driving cycle.
Brief description of the drawings
Fig. 1 is a flow of the control method of motor vehicle driven by mixed power multi power source distribution of the invention
Figure.
Fig. 2 is another stream of the control method of motor vehicle driven by mixed power multi power source distribution of the invention
Cheng Tu.
Specific embodiment
The present invention is further illustrated below by the mode of embodiment, but is not therefore limited the invention to
Among described scope of embodiments.
Explain and explanation, it is necessary to first be done for the ease of more fully understanding the present invention.
First, various Maipu's figures that the present invention is mentioned are a kind of discrete storage mode of nominal data, one
As be one-dimensional or two-dimensional table.For one-dimensional table, a variable is input into as the input quantity tabled look-up,
Interpolation calculation is carried out by two data points adjacent with the variable to Biao Nei, an output valve is obtained；
For two-dimensional table, two variables are input into as the input quantity tabled look-up, by Biao Nei and the variable phase
Four adjacent data points carry out interpolation calculation, obtain an output valve.Maipu's figure in the present invention can be with
Obtained by simulation calculation according to algorithm.These Maipu's figures can be stored in vehicle off-line manner
In controller such as ECU.When needed, can be schemed with one or more input values inquiry Maipu, obtained
To required output valve.
Secondly, present invention is generally directed to multi power source paralleling model, i.e., each power source (such as engine
And motor) power can be directly provided in parallel.
Furthermore, inventive engine is primarily referred to as traditional internal combustion engine (diesel engine or gasoline engine), certainly
Also it is not excluded for using the hair of other alternative fuel (such as compressed natural gas, propane and alcohol fuel etc.)
Motivation.
The present invention provides a kind of control method of motor vehicle driven by mixed power multi power source distribution, as shown in Figure 1, Figure 2
Shown, it is comprised the following steps：
Step 101：Determine the peak torque that engine can be output under current state, and current state
The peak torque that lower motor can be output, the step 101 includes：
In the controller the preferable maximum characteristic moment of torsion of engine and engine are recorded using Maipu's figure is offline
Continuous service peak torque；Engine actual torque is sent out divided by the preferable maximum characteristic moment of torsion of engine
Motivation reality output rate of load condensate；Mean value calculation is carried out to engine reality output rate of load condensate；According to hair
The average value of motivation reality output rate of load condensate, is schemed by inquiring about Maipu, determines what engine can be output
Peak torque, the peak torque that engine can be output is between the preferable maximum characteristic moment of torsion of engine and hair
Between motivation continuous service peak torque；And
The preferable maximum characteristic moment of torsion of motor is recorded offline using Maipu's figure in the controller and motor continues
Operation peak torque；It is actually defeated that motor actual torque obtains motor divided by the preferable maximum characteristic moment of torsion of motor
Go out rate of load condensate；Mean value calculation is carried out to motor reality output rate of load condensate；It is negative according to motor reality output
The average value of lotus rate, is schemed by inquiring about Maipu, determines the current peak torque of motor, and motor is currently maximum
Moment of torsion is between the preferable maximum characteristic moment of torsion of motor and motor continuous service peak torque；According to battery
(input is the value related to electrokinetic cell electricity, such as battery can be output for the input of management system
Power) and current motor rotating speed, determine the limit of the peak torque that the power of battery can be output to motor
Value processed；The peak torque limits value that the current peak torque of motor and the power of battery can be output to motor
Take small, be defined as the peak torque that final motor can be output；
Step 102：According to current shift, engine speed or speed, accelerator pedal aperture and power electric
Pond electricity (can not also consider electrokinetic cell electricity) in this step, determine the aggregate demand under current state
Moment of torsion；
Aggregate demand moment of torsion includes basal needs moment of torsion and power-assisted demand torque, wherein, basal needs moment of torsion
The peak torque that can be output with engine as the upper limit, with engine speed (or speed), accelerator pedal
Aperture is schemed as input inquiry base torque pedal Maipu, the first percentage is obtained, with the first percentage
It is multiplied by the peak torque that engine can be output and obtains basal needs moment of torsion；Power-assisted demand torque is with motor
The peak torque that can be output be the upper limit, using engine speed (or speed), accelerator pedal aperture as
Input inquiry booster torquemoment pedal Maipu schemes, and obtains the second percentage, and motor is multiplied by with the second percentage
The peak torque that can be output obtains power-assisted demand torque；
Using different base torque pedal Maipu figures and different helping pedal moments of torsion under different gears
Pedal Maipu schemes；
Step 103：Moment of torsion distribution is carried out between engine and motor：
When aggregate demand moment of torsion is less than the peak torque that engine can be output, with current electrokinetic cell
Electricity and aggregate demand moment of torsion are schemed as input inquiry power generation torque distribution Maipu, obtain power generation torque, are sent out
, with aggregate demand moment of torsion sum as engine demand moment of torsion, the negative value of power generation torque is used as motor for electric moment of torsion
Demand torque；
For example, aggregate demand moment of torsion is 100Nm, the generating torsion that Maipu's figure is obtained is distributed according to power generation torque
Square is 10Nm, then engine demand moment of torsion is 100+10=110Nm, and motor demand torque is
10*-1=-10Nm；
When aggregate demand moment of torsion is more than the peak torque that engine can be output, with current electrokinetic cell
Electricity and aggregate demand moment of torsion are schemed as input inquiry driving torque distribution Maipu, obtain driving distribution moment of torsion,
Aggregate demand moment of torsion subtracts driving distribution moment of torsion as engine demand moment of torsion, drives distribution moment of torsion as electricity
Machine demand torque；
For example, aggregate demand moment of torsion is 400Nm, the peak torque that engine can be output is 300Nm,
Now battery electric quantity is higher, is according to the driving distribution moment of torsion that driving torque distribution Maipu figure is obtained
150Nm, then engine demand moment of torsion is 400-150=250Nm, and motor demand torque is then 150Nm.
I.e. when battery electric quantity is higher, and engine torque is used current maximum by non-preferential.
Above-mentioned power generation torque distribution Maipu's figure and driving torque distribute Maipu's figure according to engine and motor
The optimization gross efficiency that is obtained in that and obtain in advance and be stored in vehicle control device.
It should be appreciated that some steps in the above method be not necessarily limited to it is as described above
Like that.For example, in above-mentioned steps 101, being not necessarily limited to determination as described above current
The method of the peak torque that engine can be output under state, it would however also be possible to employ other methods.For example,
The peak torque that directly can be can be output as engine using the preferable maximum characteristic moment of torsion of engine,
Or the peak torque that can be can be output as engine using engine continuous operation peak torque etc.
Deng.
Similarly, in above-mentioned steps 101, it is not necessarily limited to determination as described above current
The method of the peak torque that motor can be output under state, it would however also be possible to employ other methods.For example, not
Taken using by the peak torque limits value that the current peak torque of motor can be output with the power of battery to motor
The small peak torque that be can be output as final motor, but use the current peak torque conduct of motor
The peak torque that motor can be output.Again for example, can directly using the preferable maximum characteristic moment of torsion of motor
The peak torque that be can be output as motor, or motor continuous service peak torque conduct can be used
Peak torque that motor can be output etc..
Certainly, the method for the peak torque that the determination engine for being given in the above method can be output and
The method of the peak torque that motor can be output is preferably method, according to engine and the reality of motor
Load limits its current peak torque, can fully ensure that the endurance life of part.
From the above it can also be seen that the present invention is by considering driver demand and electrokinetic cell
Electricity distributes the moment of torsion between engine and motor, realizes accelerating, preferable power during climbing
Property and comprehensive driving cycle in preferably discharge and fuel economy.
Although it should be noted that the present invention is considered using engine as main power source, motor conduct
Auxiliary power source, but the whole efficiency of engine and motor is also significant consideration, while also
Take into account current electrokinetic cell electricity.Such as when battery electric quantity is higher, and non-preferential turns round engine
Square uses current maximum, but to pursue the whole efficiency of engine and motor in engine and electricity
Rational moment of torsion distribution is carried out between machine.Certainly, if current electrokinetic cell electricity is relatively low, for
Meet aggregate demand moment of torsion as far as possible, may sacrifice a part of whole efficiency, and can be by engine torque
Perform to its current maximum.In addition, if occurring what aggregate demand moment of torsion can be output less than engine
Peak torque, while when current electrokinetic cell electricity is sufficient, may be no longer needed for being charged to battery,
Or possibly even need battery also to export certain power.
In order to realize the above method, the present invention provides a kind of control of motor vehicle driven by mixed power multi power source distribution
System processed, it includes that the peak torque determining module that engine can be output, motor can be output most
High pulling torque determining module, aggregate demand torque determination module, moment of torsion distribute module；Wherein：
The peak torque determining module that engine can be output is used to determine engine institute energy under current state
The peak torque of output；
In the peak torque determining module that engine can be output, engine institute is determined in the following manner
The peak torque that can be exported：
In the controller the preferable maximum characteristic moment of torsion of engine and engine are recorded using Maipu's figure is offline
Continuous service peak torque；Engine actual torque is obtained divided by the preferable maximum characteristic moment of torsion of the engine
To engine reality output rate of load condensate；Mean value calculation is carried out to the engine reality output rate of load condensate；
According to the average value of the engine reality output rate of load condensate, schemed by inquiring about Maipu, determine engine
The peak torque that can be output, the peak torque that engine can be output is preferable maximum special between engine
Property moment of torsion and engine continuous operation peak torque between；
Motor can be output under the peak torque determining module that motor can be output is used to determine current state
Peak torque；
In the peak torque determining module that motor can be output, determine that motor institute can be defeated in the following manner
The peak torque for going out：
The preferable maximum characteristic moment of torsion of motor is recorded offline using Maipu's figure in the controller and motor continues
Operation peak torque；It is actually defeated that motor actual torque obtains motor divided by the preferable maximum characteristic moment of torsion of motor
Go out rate of load condensate；Mean value calculation is carried out to motor reality output rate of load condensate；It is negative according to motor reality output
The average value of lotus rate, is schemed by inquiring about Maipu, determines the current peak torque of motor, and motor is currently maximum
Moment of torsion is between the preferable maximum characteristic moment of torsion of motor and motor continuous service peak torque；According to battery
(input is the value related to electrokinetic cell electricity, such as battery can be output for the input of management system
Power) and current motor rotating speed, determine the limit of the peak torque that the power of battery can be output to motor
Value processed；The peak torque limits value that the current peak torque of motor and the power of battery can be output to motor
Take small, be defined as the peak torque that final motor can be output；
Aggregate demand torque determination module is used to be stepped on according to current shift, engine speed or speed, acceleration
Plate aperture and electrokinetic cell electricity (can not also consider electrokinetic cell electricity in this step), it is determined that currently
Aggregate demand moment of torsion, aggregate demand moment of torsion include need by engine export basal needs moment of torsion and needs
The power-assisted demand torque exported by motor；
In aggregate demand torque determination module, the maximum torsion that basal needs moment of torsion can be output with engine
Square is coboundary, is turned round as input inquiry basis using engine speed (or speed), accelerator pedal aperture
Square pedal Maipu schemes, and obtains the first percentage, and being multiplied by engine with the first percentage can be output most
High pulling torque obtains basal needs moment of torsion；The peak torque that power-assisted demand torque can be output with motor is as upper
Border, using engine speed (or speed), accelerator pedal aperture as input inquiry booster torquemoment pedal
Maipu schemes, and obtains the second percentage, and being multiplied by the peak torque that motor can be output with the second percentage obtains
To power-assisted demand torque.
Stepped on using different base torque pedal Maipu figures and different helping pedal moments of torsion under different gears
Plate Maipu schemes；
Moment of torsion distribute module is used to carry out moment of torsion distribution between engine and motor, and mould is distributed in moment of torsion
In block, the size between the peak torque that aggregate demand moment of torsion and engine can be output is judged：
When aggregate demand moment of torsion is less than the peak torque that engine can be output, with current electrokinetic cell
Electricity and aggregate demand moment of torsion are schemed as input inquiry power generation torque distribution Maipu, obtain power generation torque, are sent out
, with aggregate demand moment of torsion sum as engine demand moment of torsion, the negative value of power generation torque is used as motor for electric moment of torsion
Demand torque；
When aggregate demand moment of torsion is more than the peak torque that engine can be output, with current electrokinetic cell
Electricity and aggregate demand moment of torsion are schemed as input inquiry driving torque distribution Maipu, obtain driving distribution moment of torsion,
Aggregate demand moment of torsion subtracts driving distribution moment of torsion as engine demand moment of torsion, drives distribution moment of torsion as electricity
Machine demand torque.
Although the foregoing describing specific embodiment of the invention, those skilled in the art should
Understand, this is merely illustrative of, and protection scope of the present invention is defined by the appended claims.
Those skilled in the art, can be to these realities on the premise of without departing substantially from principle of the invention and essence
The mode of applying makes various changes or modifications, but these changes and modification each fall within protection scope of the present invention.
Claims (10)
1. a kind of control method of motor vehicle driven by mixed power multi power source distribution, comprises the following steps：
Determine the peak torque that engine can be output under current state, and motor institute under current state
The peak torque that can be exported；
According to current shift, engine speed or speed and accelerator pedal aperture, it is determined that current is total
Demand torque；And
Compare the peak torque that aggregate demand moment of torsion can be output with engine, with based on comparative result and root
Engine demand moment of torsion and motor are determined respectively according to current electrokinetic cell electricity and the aggregate demand moment of torsion
Demand torque；
When the aggregate demand moment of torsion is less than the peak torque that the engine can be output, according to current
Electrokinetic cell electricity and the aggregate demand moment of torsion determine power generation torque, the power generation torque is total with described
, used as the engine demand moment of torsion, the negative value of the power generation torque is used as the electricity for demand torque sum
Machine demand torque；And
When the aggregate demand moment of torsion is more than the peak torque that the engine can be output, according to current
Electrokinetic cell electricity and the aggregate demand moment of torsion determine to drive distribution moment of torsion, the aggregate demand moment of torsion subtracts
Described driving is gone to distribute moment of torsion as the engine demand moment of torsion, the driving distributes moment of torsion as institute
State motor demand torque.
2. the control method that motor vehicle driven by mixed power multi power source as claimed in claim 1 is distributed, wherein,
Determine that the peak torque that engine can be output under current state includes：
The preferable maximum characteristic moment of torsion of storage engine and engine continuous operation maximum are turned round in the controller
Square；It is actually defeated that engine actual torque obtains engine divided by the preferable maximum characteristic moment of torsion of the engine
Go out rate of load condensate；Mean value calculation is carried out to the engine reality output rate of load condensate；Started according to described
The average value of machine reality output rate of load condensate, determines the peak torque that the engine can be output, described
The peak torque that engine can be output is started between the preferable maximum characteristic moment of torsion of the engine with described
Between machine continuous service peak torque.
3. the control method that motor vehicle driven by mixed power multi power source as claimed in claim 2 is distributed, wherein,
Determine that the peak torque that motor can be output includes：
The preferable maximum characteristic moment of torsion of motor and motor continuous service peak torque are stored in the controller；Electricity
Machine actual torque obtains motor reality output rate of load condensate divided by the preferable maximum characteristic moment of torsion of the motor；It is right
The motor reality output rate of load condensate carries out mean value calculation；According to the motor reality output rate of load condensate
Average value, determine the current peak torque of the motor, the current peak torque of motor is between described
Between the preferable maximum characteristic moment of torsion of motor and the motor continuous service peak torque, the motor is worked as
The peak torque that preceding peak torque can be output as motor.
4. the control method that motor vehicle driven by mixed power multi power source as claimed in claim 3 is distributed, wherein,
Determine that the peak torque that the motor can be output is further included：
Input and current motor rotating speed according to battery management system, determine the power of battery to the motor
The limits value of the peak torque that can be output；By the current peak torque of the motor and the power of battery to institute
State the peak torque limits value that motor can be output and take small, be defined as final motor and can be output most
High pulling torque.
5. the control of the motor vehicle driven by mixed power multi power source distribution as described in any one in claim 1-4
Method processed, the aggregate demand moment of torsion includes basal needs moment of torsion and power-assisted demand torque, wherein, it is described
The peak torque that basal needs moment of torsion can be output with engine as the upper limit, according to engine speed or car
The peak torque that speed, accelerator pedal aperture and the engine can be output is obtained；The power-assisted is needed
The peak torque that moment of torsion can be output with the motor is sought as the upper limit, according to engine speed or speed,
The peak torque that accelerator pedal aperture and the motor can be output is obtained.
6. the control system that a kind of motor vehicle driven by mixed power multi power source is distributed, wherein, it includes engine
Peak torque determining module that the peak torque determining module that can be output, motor can be output, always need
Ask torque determination module, moment of torsion distribute module；Wherein：
The peak torque determining module that the engine can be output is used to determine engine under current state
The peak torque that can be output；
The peak torque determining module that the motor can be output is used to determine motor institute energy under current state
The peak torque of output；
The aggregate demand torque determination module be used for according to current shift, engine speed or speed and
Accelerator pedal aperture, it is determined that current aggregate demand moment of torsion；
The moment of torsion distribute module is used to compare the maximum torsion that aggregate demand moment of torsion can be output with engine
Square, with based on comparative result and true respectively according to current electrokinetic cell electricity and the aggregate demand moment of torsion
Determine engine demand moment of torsion and motor demand torque；
In the moment of torsion distribute module, engine demand moment of torsion and motor demand are determined in the following manner
Moment of torsion：
When the aggregate demand moment of torsion is less than the peak torque that the engine can be output, according to current
Electrokinetic cell electricity and the aggregate demand moment of torsion determine power generation torque, the power generation torque is total with described
, used as the engine demand moment of torsion, the negative value of the power generation torque is used as the electricity for demand torque sum
Machine demand torque；And
When the aggregate demand moment of torsion is more than the peak torque that the engine can be output, according to current
Electrokinetic cell electricity and the aggregate demand moment of torsion determine to drive distribution moment of torsion, the aggregate demand moment of torsion subtracts
Described driving is gone to distribute moment of torsion as the engine demand moment of torsion, the driving distributes moment of torsion as institute
State motor demand torque.
7. the control system that motor vehicle driven by mixed power multi power source as claimed in claim 6 is distributed, wherein,
In the peak torque determining module that the engine can be output, start described in determination in the following manner
The peak torque that machine can be output：
The preferable maximum characteristic moment of torsion of storage engine and engine continuous operation maximum are turned round in the controller
Square；It is actually defeated that engine actual torque obtains engine divided by the preferable maximum characteristic moment of torsion of the engine
Go out rate of load condensate；Mean value calculation is carried out to the engine reality output rate of load condensate；Started according to described
The average value of machine reality output rate of load condensate, determines the peak torque that the engine can be output, described
The peak torque that engine can be output is started between the preferable maximum characteristic moment of torsion of the engine with described
Between machine continuous service peak torque.
8. the control system that motor vehicle driven by mixed power multi power source as claimed in claim 7 is distributed, wherein,
In the peak torque determining module that the motor can be output, determine that motor institute can be defeated in the following manner
The peak torque for going out：
The preferable maximum characteristic moment of torsion of motor and motor continuous service peak torque are stored in the controller；Electricity
Machine actual torque obtains motor reality output rate of load condensate divided by the preferable maximum characteristic moment of torsion of the motor；It is right
The motor reality output rate of load condensate carries out mean value calculation；According to the motor reality output rate of load condensate
Average value, determine the current peak torque of the motor, the current peak torque of motor is between described
Between the preferable maximum characteristic moment of torsion of motor and the motor continuous service peak torque, the motor is worked as
The peak torque that preceding peak torque can be output as motor.
9. the control system that motor vehicle driven by mixed power multi power source as claimed in claim 8 is distributed, wherein,
In the peak torque determining module that the motor can be output, motor is further determined that in the following manner
The peak torque that can be output：
Input and current motor rotating speed according to battery management system, determine the power of battery to the motor
The limits value of the peak torque that can be output；By the current peak torque of the motor and the power of battery to institute
State the peak torque limits value that motor can be output and take small, be defined as final motor and can be output most
High pulling torque.
10. the motor vehicle driven by mixed power multi power source as described in any one in claim 6-9 is distributed
Control system, wherein, in the aggregate demand torque determination module, aggregate demand is determined in the following manner
Moment of torsion：
The aggregate demand moment of torsion includes basal needs moment of torsion and power-assisted demand torque, wherein, the basis
The peak torque that demand torque can be output with engine as the upper limit, according to engine speed or speed,
The peak torque that accelerator pedal aperture and the engine can be output is obtained；The power-assisted demand is turned round
The peak torque that square can be output with the motor as the upper limit, according to engine speed or speed, acceleration
The peak torque that pedal aperture and the motor can be output is obtained.
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| CN111703414A (en) * | 2020-03-27 | 2020-09-25 | 北京致行慕远科技有限公司 | Method for controlling an all-terrain vehicle |
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| CN112026531A (en) * | 2020-07-31 | 2020-12-04 | 武汉理工大学 | Driving torque distribution method and system for front-rear axle double-motor driven electric automobile |
| CN112977396A (en) * | 2021-03-18 | 2021-06-18 | 中国第一汽车股份有限公司 | Hybrid electric vehicle power generation torque distribution method and hybrid electric vehicle |
| CN112977396B (en) * | 2021-03-18 | 2022-04-22 | 中国第一汽车股份有限公司 | Hybrid electric vehicle power generation torque distribution method and hybrid electric vehicle |
| CN113619406A (en) * | 2021-09-02 | 2021-11-09 | 北京汽车集团越野车有限公司 | Control method and device for automobile power-assisted function |
| CN114312354A (en) * | 2022-01-12 | 2022-04-12 | 安徽华菱汽车有限公司 | Dual-motor torque control method and device and computer readable storage medium |
| CN115158037A (en) * | 2022-09-06 | 2022-10-11 | 中国重汽集团济南动力有限公司 | Torque distribution method and system for four-wheel drive motor of electric vehicle |
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