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CN106800018B - Vehicle powertrain control method and system - Google Patents

Vehicle powertrain control method and system Download PDF

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Publication number
CN106800018B
CN106800018B CN201710018586.8A CN201710018586A CN106800018B CN 106800018 B CN106800018 B CN 106800018B CN 201710018586 A CN201710018586 A CN 201710018586A CN 106800018 B CN106800018 B CN 106800018B
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Prior art keywords
torque
power
driving
driving torque
current
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CN106800018A (en
Inventor
莫崇相
吴坚
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Guangzhou Automobile Group Co Ltd
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Guangzhou Automobile Group Co Ltd
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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
    • 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
    • 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
    • B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
    • 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
    • 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
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18—Propelling the vehicle
    • 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
    • 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
    • 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
    • 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
    • B60W2540/00—Input parameters relating to occupants
    • B60W2540/16—Ratio selector position
    • 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
    • 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
    • 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
    • B60W2710/10—Change speed gearings
    • B60W2710/105—Output torque
    • 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
    • B60W2720/00—Output or target parameters relating to overall vehicle dynamics
    • B60W2720/30—Wheel 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
    • 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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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Arrangement And Driving Of Transmission Devices (AREA)

Abstract

A kind of vehicle engine assembly control method and system, the method in one embodiment is comprising steps of obtain the current throttle aperture of vehicle, current vehicle speed, current gear speed ratio, transmission the rotary inertia factor, current gear；It is determined according to the current throttle aperture, the current vehicle speed and drives power；It is determined according to the current vehicle speed, the current gear speed ratio, the transmission rotary inertia factor, the current throttle aperture, the current gear and the driving power and drives torque；TCU requested torque is determined according to the driving power and the driving torque；Vehicle power control is carried out according to the driving torque, gearbox control is carried out according to the TCU requested torque.The scheme of the present embodiment, determines the torque of vehicle based on driving power, to solve the problems, such as that shift front and back has grade shift bring vehicle power discontinuous, improves vehicle shift quality.

Description

Vehicle engine assembly control method and system
Technical field
The present invention relates to field of vehicle control, dynamic more particularly to a kind of vehicle engine assembly control method and a kind of vehicle Power assembly control system.
Background technique
There are two types of current vehicle engine assembly integration modes: a kind of for the control of the single power source of engine and speed changer Structure, control structure is as shown in Figure 1, another is engine, speed changer, motor and ISG (automobile start power generation one Body machine) integrated hybrid power control structure, by two drive and 4 wheel driven for, control structure difference is as shown in Figure 2 and Figure 3.
In conjunction with Fig. 1 to Fig. 3 as it can be seen that vehicle engine assembly structure control common at present is moved based on torque Power control, is to export driving torque from the angle of power source (synthesis of engine or engine and motor), for list The control of one power source, the torque characteristics that engine is output to speed changer end are similar to the relationship for waiting the torques such as throttles, and mostly dynamic The control of the hybrid power in power source is also to be synthesized to the form that speed changer end is exported using the torque of multi power source.Due to normal Similar such as gear will be also presented in the characteristics of transmission gear step type variation seen, therefore, the driving torque for being input to road wheel end The same variation of speed ratio, since shift front and back speed cannot be mutated, so that the driving power of shift front rear wheel also will Rank alternation is presented, finally makes vehicle power discontinuous before and after shift.In order to guarantee that shift front and back obtains identical vehicle Power, identical dynamic property impression can just be obtained by needing driver to adjust throttle size, seriously affect vehicle in this way Driving and shift quality.
Summary of the invention
Based on this, the embodiment of the present invention is designed to provide a kind of vehicle engine assembly control method and a kind of vehicle Power assembly control system, to solve the problems, such as that vehicle power variation is discontinuous.
In order to achieve the above objectives, the embodiment of the present invention uses following technical scheme:
A kind of vehicle engine assembly control method, comprising steps of
Obtain current throttle aperture, current vehicle speed, current gear speed ratio, transmission the rotary inertia factor, current shelves of vehicle Position；
It is determined according to the current throttle aperture, the current vehicle speed and drives power；
It is opened according to the current vehicle speed, the current gear speed ratio, the transmission rotary inertia factor, the current throttle Degree, the current gear and the driving power, which determine, drives torque；
TCU requested torque is determined according to the driving power and driving torque；
Vehicle power control is carried out according to the driving torque, gearbox control is carried out according to the TCU requested torque.
A kind of vehicle engine assembly control system, including power control unit and gear box control unit, in which:
The power control unit includes driving power determination module, driving torque determination module, the gearbox control Unit includes TCU requested torque determining module；
The driving power determination module drives power for determining according to current throttle aperture, current vehicle speed；
The driving torque determination module, for according to the current vehicle speed, current gear speed ratio, transmission rotary inertia because Sub, the described current throttle aperture, current gear and the driving power, which determine, drives torque；
The TCU requested torque determining module, for determining that TCU is requested according to the driving power and the driving torque Torque；
The power control unit carries out vehicle power control, the gear box control unit root according to the driving torque Gearbox control is carried out according to the TCU requested torque.
Based on the scheme of embodiment as described above, determined based on current throttle aperture, current vehicle speed after driving power, The driving torque and TCU requested torque that vehicle is determined based on driving power are then based on determining driving torque and carry out Vehicle power control carries out gearbox control based on determining TCU requested torque, is to determine vehicle based on driving power Torque, thus solve the problems, such as shift front and back have grade shift bring vehicle power it is discontinuous, improve vehicle shift product Matter.
Detailed description of the invention
Fig. 1 is the single power source control structure schematic diagram of current engine and speed changer；
Fig. 2 is two current driving mixed power vehicle power control structure schematic diagrames；
Fig. 3 is current four-wheel drive hybrid vehicle power control architecture schematic diagram；
Fig. 4 is the flow diagram of the vehicle engine assembly control method in one embodiment；
Fig. 5 is the structural schematic diagram of the vehicle engine assembly control system in one embodiment；
Fig. 6 is the structural schematic diagram of the vehicle engine assembly control system in a specific example；
Fig. 7 is the structural schematic diagram of the vehicle engine assembly control system in another specific example；
Fig. 8 is to obtain the corresponding relation schematic diagram for driving torque by throttle size and engine speed；
Fig. 9 is the schematic diagram of the vehicle acceleration under each gear；
Figure 10 is the schematic diagram of the ECU-TCU software control interface of the single power source in one embodiment；
Figure 11 is the functional block diagram schematic diagram of the calculating driving torque in a concrete application example；
Figure 12 is the schematic diagram of the HCU-TCU software control interface of the multi power source in one embodiment；
Figure 13 is the schematic diagram of the HCU-ECU software control interface of the multi power source in one embodiment；
Figure 14 is the schematic diagram of the HCU-IPU-BMS software control interface of the multi power source in one embodiment；
Figure 15 is that being shifted gears in a concrete application example based on power demarcates the schematic diagram of vehicle wheel power；
Figure 16 is the schematic diagram of the power contrast based on torque and power Shifting in a concrete application example；
Figure 17 is the schematic diagram of the vehicle acceleration comparison in a concrete application example；
Figure 18 is the schematic diagram of the identical shifting points vehicle acceleration comparison in a concrete application example；
Figure 19 is the schematic diagram based on torque shift vehicle acceleration curve that emulation obtains in a concrete application example；
Figure 20 be in a concrete application example emulation obtain based on power shift gears vehicle acceleration curve.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention more comprehensible, with reference to the accompanying drawings and embodiments, to this Invention is described in further detail.It should be appreciated that the specific embodiments described herein are only used to explain the present invention, And the scope of protection of the present invention is not limited.
In the embodiment of the present invention, the control of vehicle power and shift quality is considered from the angle of driver. Whether single power source or multi power source, for driver, it is only necessary to it is identical corresponding to wheel to meet identical throttle Driving power.Meanwhile for mechanically having for grade gear shift transmission, it is contemplated that shift front and back drives the consistent of power Property, it is only necessary to the corresponding conversion for driving torque of driving power is coordinated in control, so that solving shift front and back has grade shift bring The discontinuous problem of vehicle power.
The flow diagram of the vehicle engine assembly control method in one embodiment is shown in Fig. 4.As shown in figure 4, Vehicle engine assembly control method in the embodiment comprising steps of
Step S401: obtain the current throttle aperture of vehicle, current vehicle speed, current gear speed ratio, transmission rotary inertia because Son, current gear；
Step S402: it is determined according to the current throttle aperture, the current vehicle speed and drives power；
Step S403: according to the current vehicle speed, the current gear speed ratio, the transmission rotary inertia factor, described Current throttle aperture, the current gear and the driving power, which determine, drives torque；
Step S404: TCU requested torque is determined according to the driving power and the driving torque；
Step S405: carrying out vehicle power control according to the driving torque, carries out speed change according to the TCU requested torque Case control.
Scheme in embodiment as described above, after determining driving power based on current throttle aperture, current vehicle speed, with The driving torque and TCU requested torque that vehicle is determined based on driving power are then based on determining driving torque and carry out vehicle Dynamic Control carries out gearbox control based on determining TCU requested torque, is to determine vehicle based on driving power Torque improves vehicle shift quality to solve the problems, such as that shift front and back has grade shift bring vehicle power discontinuous.
Since current vehicle may have different power sources to provide energy source and power, below for single power source and more For the hybrid power of power source, it is illustrated respectively.
For single power source, power resources are generally from engine.For using single power source For vehicle, when determining driving torque, it can be carried out using following manner:
According to the current vehicle speed, the current gear speed ratio, the transmission rotary inertia factor and the driving function Rate determines that driving drives torque；
According to the current throttle aperture, the current gear and the current gear speed ratio, determines that starting drives and turn round Square；
Torque is driven according to the driving, the starting drives torque and determines that engine target drives torque；
Torque is driven according to the engine target and drives the value range of torque, determines the driving torque.
In the case where single power source, as shown in connection with fig. 1, engine is directly connect with speed changer, is provided for speed changer Power source therefore, can be in current rotating speed, the engine for obtaining vehicle when determining TCU requested torque according to driving power After ability torque, carried out using following manner:
Torque, the starting driving torque, current rotating speed, the driving power are driven according to the driving, determines speed change Case target drives torque；
Torque, which is driven, according to the engine ability torque and the gearbox target determines the TCU requested torque.
And for the hybrid power source using multi power source, since its power source is more complicated than for single power source, And the front-wheel of vehicle, rear-wheel provide power using different power sources, thus can from throttle performance angle to front-wheel and after Wheel distinguishes.
In a concrete application example, for the vehicle of multi power source, above-mentioned driving torque may include front-wheel It drives torque and rear-wheel drives torque.
Accordingly, it is above-mentioned it is determining drive torque when, can obtain engine ability torque, front motor ability torque, after After Motor Capability torque, current SOC state, rear-wheel speed ratio, carried out using following manner:
According to the current vehicle speed, the current gear speed ratio, the transmission rotary inertia factor and the driving function Rate determines that driving drives torque；
According to the current throttle aperture, the current gear and the current gear speed ratio, determines that starting drives and turn round Square；
Torque is driven according to the driving, the starting drives torque and determines that target drives torque；
Torque is driven according to the target and drives the value range of torque, determines total driving torque；
It determines that the front-wheel drives according to total driving torque, engine ability torque and front motor ability torque to turn round Square；
Rear-wheel driving ability function is determined according to the rear Motor Capability torque, the current vehicle speed and current SOC state Rate；It is understood that Motor torque, current SOC state after also needing to obtain in the present embodiment；
Determine that rear-wheel drives power according to the driving power, front-wheel driving ability power, rear-wheel driving ability power；
According to the rear-wheel drive power, the current vehicle speed, the rear-wheel speed ratio, the transmission rotary inertia factor with And the rear-wheel driving ability power determines that the rear-wheel drives torque；It is understood that also needing to obtain in the present embodiment Rear-wheel speed ratio.
In the case, when determining TCU requested torque, torque can be driven according to the front-wheel, the rear-wheel drives Torque determines the TCU requested torque.By taking 4 wheel driven vehicle as an example, the TCU request of 4 wheel driven vehicle drives torque and needs to consider rear-wheel Therefore the effect that twisting fluctuation adjusts self closed loop of clutch control is driven above-mentioned according to front-wheel driving torque and rear-wheel When sailing torque and determining TCU requested torque, setting torque can be passed through synthesize closed loop coordination function and carry out, the form of specific function And establish mode this embodiment without limitation.
Using hybrid power source, when the driving torque to engine controls, it can combine following Mode carries out:
Determine that engine drives according to engine ability torque, revolving speed, the transmission efficiency factor and the transmission rotary inertia factor Power capability；
Determine that front motor drives power energy according to revolving speed, speed capability torque, the electric efficiency factor and current SOC state Power；
Power capability is driven according to engine, front motor drives power capability and determines that front-wheel drives power；
Torque is driven according to engine ability torque, the target, the front-wheel drives power and determines that engine drives torsion Square.
At this point, driving torque in the above-mentioned torque progress vehicle power control according to driving, including according to the engine Engine is controlled.
Herein using in the case where hybrid power source, power, current vehicle speed, rear wheel speed can also be driven according to the rear-wheel Than and transmission the rotary inertia factor determine rear-wheel drive torque.
At this point, can also include being driven according to the rear-wheel in the above-mentioned torque progress vehicle power control according to driving Torque carries out rear-guard motor control.
On the other hand, power, current vehicle speed, current shift speed ratio, transmission rotary inertia can also be driven according to front motor The factor determines front motor target torque.
At this point, can also include according to the front motor mesh in the above-mentioned torque progress vehicle power control according to driving Mark torque controls precursor motor.
Using the hybrid power of multi power source, it is also possible to using battery as power source.Therefore, have at one In body example, can with comprising steps of
Obtain current SOC state, battery system state parameter；
Battery target power, the battery target are determined according to the current SOC state, the battery system state parameter Power includes peak-peak charge power, maximum rated charge power, peak-peak working power, maximum rated working power.
Thus when according to torque progress vehicle power control is driven, it can also be according to the battery target power to electricity Cell system is controlled.
Based on the method in the embodiment described, the embodiment of the present invention also provides a kind of vehicle engine assembly control system.
The structural schematic diagram of the vehicle engine assembly control system in one embodiment is shown in Fig. 5.As shown in figure 5, System in the embodiment includes power control unit 501 and gear box control unit 502.Wherein, power control unit 501 wraps It includes and drives power determination module 5011, drive torque determination module 5012, gear box control unit 502 includes TCU requested torque Determining module 5021.
Above-mentioned driving power determination module 5011 drives power for determining according to current throttle aperture, current vehicle speed；
Above-mentioned driving torque determination module 5012, for according to current vehicle speed, current gear speed ratio, transmission rotary inertia because Son, current throttle aperture, current gear and the driving power, which determine, drives torque；
And above-mentioned TCU requested torque determining module 5021, for being determined according to the driving power and the driving torque TCU requested torque.
To which above-mentioned power control unit 501 carries out vehicle power control according to the driving torque, and gearbox control is single Member 502 carries out gearbox control according to the TCU requested torque.
Scheme in embodiment as described above, after determining driving power based on current throttle aperture, current vehicle speed, with The driving torque and TCU requested torque that vehicle is determined based on driving power are then based on determining driving torque and carry out vehicle Dynamic Control carries out gearbox control based on determining TCU requested torque, is to determine vehicle based on driving power Torque improves vehicle shift quality to solve the problems, such as that shift front and back has grade shift bring vehicle power discontinuous.
Since current vehicle may have different power sources to provide energy source and power, below for single power source and more For the hybrid power of power source, it is illustrated respectively.
The structural schematic diagram of the vehicle engine assembly control system in a specific example is shown in Fig. 6, this specifically shows It is to be illustrated for single power source in example.
As shown in fig. 6, in the specific example, above-mentioned power control unit 501 is control unit of engine ECU, above-mentioned Driving torque determination module 5012 may include:
First driving drives torque submodule 50121, for according to the current vehicle speed, the current gear speed ratio, institute The transmission rotary inertia factor and the vehicle drive power are stated, determines that driving drives torque；
First starting drive torque submodule 50122, for according to the current throttle aperture, the current gear and The current gear speed ratio determines that starting drives torque；
First object drives torque submodule 50123, and for driving torque according to the driving, the starting drives torque Determine that engine target drives torque；
First drives torque submodule 50124, for driving torque according to the engine target and driving torque Value range determines the driving torque.
At this point, above-mentioned TCU requested torque determining module 5021, can drive torque, the starting is driven according to the driving Torque, current rotating speed, the driving power are sailed, determines that gearbox target drives torque；And according to the engine ability torque Torque, which is driven, with the gearbox target determines the TCU requested torque.
Fig. 7 shows the structural schematic diagram of the vehicle engine assembly control system in another specific example, this specifically shows It in example is illustrated by taking the hybrid power of multi power source as an example.
As shown in fig. 7, in the specific example, above-mentioned power control unit 501 is hybrid power control unit HCU.It is right For the hybrid power source using multi power source, since its power source is more complicated than for single power source, and before vehicle Wheel, rear-wheel provide power using different power sources, thus can distinguish from throttle performance angle to front wheels and rear wheels.According to This, as shown in fig. 7, in the specific example, above-mentioned driving torque determination module 5012 includes:
Second driving drives torque submodule 5112, for according to the current vehicle speed, the current gear speed ratio, described It is driven the rotary inertia factor and the driving power, determines that driving drives torque；
Second starting drive torque submodule 5212, for according to the current throttle aperture, the current gear and The current gear speed ratio determines that starting drives torque；
Second target drives torque submodule 5312, and for driving torque according to the driving, the starting drives torque Determine that target drives torque；
Front-wheel drives torque submodule 5412, for driving torque according to the target and driving the value model of torque It encloses, determines total driving torque；And according to the determination of total driving torque, engine ability torque and front motor ability torque Front-wheel drives torque；
Rear-wheel drives power modules 5512, for according to the rear Motor Capability torque, the current vehicle speed and institute It states current SOC state and determines rear-wheel driving ability power；It is driven according to the driving power, front-wheel driving ability power, rear-wheel Capable power determines that rear-wheel drives power；
Rear-wheel drives torque submodule 5612, for driving power, the current vehicle speed, the rear-wheel according to the rear-wheel Speed ratio, the transmission rotary inertia factor and the rear-wheel driving ability power determine that the rear-wheel drives torque.
In the case, above-mentioned TCU requested torque determining module 5021 can drive torque, described according to the front-wheel Rear-wheel drives torque and determines the TCU requested torque.By taking 4 wheel driven vehicle as an example, the TCU request of 4 wheel driven vehicle drives torque and needs Consider the effect that rear-wheel twisting fluctuation adjusts self closed loop of clutch control, therefore, torque is driven according to front-wheel above-mentioned When torque determines TCU requested torque at that time with rear-wheel, closed loop coordination function can be synthesized by setting torque and carried out, specific letter Several forms and establish mode this embodiment without limitation.
As shown in fig. 7, in the specific example, the system of the present embodiment can also include control unit of engine 503, it should Control unit of engine 503 includes that engine drives torque determination module 5031.The engine drives torque determination module 5031, For determining that engine drives power according to engine ability torque, revolving speed, the transmission efficiency factor and the transmission rotary inertia factor Ability determines that front motor drives power capability, root according to revolving speed, speed capability torque, the electric efficiency factor and current SOC state Power capability is driven according to engine, front motor drives power capability and determines that front-wheel drives power；According to engine ability torque, institute State target driving torque, the front-wheel drives power and determines that engine drives torque.
At this point, control unit of engine 503 is when according to torque progress vehicle power control is driven, used mode can Engine is controlled so as to include: control unit of engine 503 drive torque according to the engine.
As shown in fig. 7, in the specific example, the system of the present embodiment can also include motor control unit 504.Its In, motor control unit 504 may include that rear-wheel drives torque determination module 5041 and/or motor target torque determining module 5042。
Wherein, rear-wheel drives torque determination module 5041, for driving power, current vehicle speed, rear-wheel according to the rear-wheel Speed ratio and the transmission rotary inertia factor determine that rear-wheel drives torque.At this point, above-mentioned motor control unit 504 is according to the rear-wheel It drives torque and carries out rear-guard motor control.
Motor target torque determining module 5042, for driving power according to front motor, current vehicle speed, gear speed ratio, passing The dynamic rotary inertia factor determines front motor target torque.At this point, above-mentioned motor control unit 504 is according to the motor target torque Precursor motor is controlled.
As shown in fig. 7, in the specific example, the system of the present embodiment can also include that battery controls administrative unit 505. Wherein, battery control administrative unit 505 includes power of battery determining module 5051, for obtaining current SOC state, battery system System state parameter；And battery target power, the electricity are determined according to the current SOC state, the battery system state parameter Pond target power includes peak-peak charge power, maximum rated charge power, peak-peak working power, maximum rated acting Power.At this point, battery control administrative unit 505 controls battery system according to the battery target power.
Based on the method and system in each embodiment as described above, below in conjunction with the method and system in above-described embodiment Particular technique application example carry out illustrated in greater detail.
It is that power is driven inversely to calculate the target to each power source from road wheel end in the scheme of the embodiment of the present invention It drives torque and considers gear and be driven the influence of the rotary inertia factor, similar gear speed ratio one can be presented in these target torques The stepped change of sample is simultaneously satisfied with the constant requirement of general power, due to the consistency of power, to ensure that shift fore-aft vehicle The consistency of power.
Relationship based on throttle size and air throttle can be turned according to the characteristic of engine by throttle size and engine Speed obtain it is corresponding drive torque, this relationship (especially turbocharged engine) is substantially it is considered that equal throttles are corresponding Identical driving torque.Its relation schematic diagram is as shown in Figure 8.
The equation of step type fixed drive ratio transmission vehicle based on vehicle, available vehicle acceleration calculate Formula such as following formula (1)
In formula (1),Indicate longitudinal acceleration of the vehicle, unit m/s2, TtqIndicate engine driving torque, unit is Nm, igIndicate transmission gear ratio, i0Indicate speed changer base ratio, ηTIndicating transmission efficiency, r indicates that vehicle rolls effective radius, Unit is m, and G indicates vehicle gravity, and unit is N (newton), and f indicates that coefficient of rolling resistance, i indicate the gradient, CDIndicate air resistance Force coefficient, A indicate vehicle front face area, unit m2, uaIndicate that car speed, unit Km/h, δ indicate gyrating mass conversion Coefficient, m indicate vehicle mass, and unit is kg (kilogram).
Since the driving parameters state of shift moment vehicle cannot be mutated, thus available shift fore-aft vehicle acceleration Difference such as following formula (2).
Motor characteristic curve as shown in connection with fig. 8 can be learnt: P2 > P1, Ttq2≈Ttq1.Due to i2 > i1,1 ≈ δ 2 of δ, (P2- > P1) vehicle acceleration is poor before and after knowing upshiftLess than zero, i.e., upshift fore-aft vehicle acceleration is reduced in ladder.With It is calculated for 60% throttle torque, the vehicle acceleration under various gears is in stepped change as shown in Figure 9.
Pliable in order to solve the above-mentioned injustice for having acceleration brought by the moment of torsion control such as grade shift, the embodiment of the present invention is logical Design motivation assembly is crossed to control so that shift front and back wheel driving power is equal to solve the problems, such as this.Power of the embodiment of the present invention changes The thought of gear control is to come inversely to derive ECU (control unit of engine) and TCU (gearbox control list from road wheel end constant power Member) control strategy.
Vehicle power can be continuous when having grade shift for front and back of shifting gears, to need to meet wheel shift front and backBy formula (2) it is found that the target of shift front and back engine drives torque and (3) can be controlled as the following formula.
Therefore, based on the method and system in embodiment as described above, relevant software control interface can be designed, with Execute or provide the method or system in the various embodiments described above.
The signal of the ECU-TCU software control interface of the single power source in one embodiment of the invention is shown in Figure 10 Figure.
In conjunction with shown in 10, the calculating for driving power can be determined by two input quantities of throttle and speed, specifically be answered at one With in example, power=interpolation letter can be driven by tabling look-up to obtain using throttle and speed as the interpolating function of input quantity Number (throttle, speed).It is understood that for ECU, for different driving style (driving mode in other words, such as Motor pattern, economic model), the interpolating function table of different driving power can also be defined.
And drive the calculating of torque, then need to consider gear, starting, speed, transmission the rotary inertia factor, engine torque The influence of the factors such as limitation, to need the factors such as gear, starting, speed, the transmission rotary inertia factor, engine torque limit It is calculated, the functional block diagram schematic diagram that the calculating in a concrete application example drives torque is shown in Figure 11.
As shown in figure 11, the calculating for driving torque can be briefly described are as follows:
Drive torque=minimax function (minimal torque, peak torque, target drive torque).
Wherein:
Target drives torque=operating condition selection function (driving drives torque, and starting drives torque)；
Driving drives torque=driving power * speed * gear speed ratio * and is driven the rotary inertia factor；
Starting drives torque=starting torque interpolating function (throttle, gear) * gear speed ratio.
And the starting torque in TCU needs to influence in view of the size for driving power and the control of transient process, TCU exists The moment of torsion control request of shift process needs to guarantee that output torque meets the needs of driving power, while also needing in view of starting The limitation of machine maximum capacity torque, therefore the requested torque of TCU can indicate are as follows:
TCU requested torque=maximum value limit value function (engine ability torque, target drive torque).
Wherein:
Target drives torque=target restricted function, and (operating condition selects function (starting drives torque, and driving drives torque) * to turn Speed drives power).
The signal of the HCU-TCU software control interface of the multi power source in a concrete application example is shown in Figure 12 Figure.
As shown in figure 12, it is similar that the mode of power is driven with the calculating shown in Figure 10 when middle single power source, in more power When source, the calculating for driving power can also be determined by two input quantities of throttle and speed, can be in a concrete application example By tabling look-up to obtain using throttle and speed as the interpolating function of input quantity, i.e. driving power=interpolating function (throttle, speed). It is understood that for HCU, for different driving style (driving mode in other words, such as motor pattern, economy Mode), the interpolating function table of different driving power can also be defined.
Front-wheel drives the calculating of torque, can based on shown in Figure 11 in, above-mentioned single power source when same mode, and Consider further that the influence of engine ability torque and front motor torque and revolving speed, to have:
Front-wheel drives torque=restricted function (driving torque, engine ability torque, front motor torque and speed capability).
Rear-wheel drives power when calculating corresponding rear-wheel driving torque, needs in view of rear-wheel speed ratio (if any), transmission The influence of inertial factor, rear motor (eRad) torque and revolving speed, while also needing to drive in view of front-wheel is practical in shift process It sails the variation of torque and closed-loop control meets vehicle and always drives the requirement of power, to have:
Rear-wheel drives power=power distribution control function and (drives power, front-wheel driving ability power, rear-wheel driving ability Power).
Wherein:
Rear-wheel driving ability power=capability goal function (rear Motor torque, speed, SOC state).
The control mode of Figure 11 can be referred to by driving power by rear-wheel, to show that rear-wheel drives the calculation formula of torque such as Under:
Rear-wheel driving torque=restricted function (rear-wheel drives power * speed * rear-wheel speed ratio * and is driven the rotary inertia factor, after Take turns driving ability power).
And it is directed to 4 wheel driven vehicle, it is public in addition to needing to meet the driving torque arithmetic in shown in Figure 11 that TCU request drives torque Formula, it is also necessary to consider the effect that rear-wheel torque ripple adjusts self closed loop of clutch control, to have:
TCU requested torque=torque synthesis closed loop coordination function (front-wheel drives torque, and rear-wheel drives torque).
The signal of the HCU-ECU software control interface of the multi power source in a concrete application example is shown in Figure 13 Figure.
As shown in Figure 13, the front-wheel of HCU drives the ginseng that power needs to be divided into engine output reference power and motor It examines power (power of motor power containing positive output and negative absorption power situation), while the calculating of the driving torque of front-wheel also needs to examine Considering gear, starting, speed, transmission inertial factor, engine torque limit factor, front motor torque and revolving speed influences, thus its Formula can be expressed as follows:
Front-wheel driving power=power distribution control function (engine drives power capability, and front motor drives power capability, Motor drives power capability afterwards).
Wherein:
Engine drive the power capability=engine ability torque * revolving speed * transmission efficiency factor/transmission rotary inertia because Son；
Front motor drives power capability=cell potential objective function (revolving speed * speed capability torque (positive/negative) * motor effect The rate factor, SOC state).
Motor drives power capability=cell potential objective function (revolving speed * speed capability torque (positive/negative) * motor effect afterwards The rate factor, SOC state).
ECU can calculate engine according to the size for driving power and drive torque, which needs in view of engine The factor of torque limit, to have:
Engine drives torque=maximum value restricted function (engine ability torque drives target torque).
Wherein, the mode for driving the driving torque that target torque is referred in Figure 11 is calculated.
Showing for the HCU-IPU-BMS software control interface of the multi power source in a concrete application example is shown in Figure 14 It is intended to.
As shown in Figure 14, for 4 wheel driven vehicle, it is that power is driven by rear-wheel according to current vehicle that eRad, which drives torque, The reference torque (torque can be positive output valve can also be with negative output value) that situations such as fast calculates, so as to express such as Under:
Rear-wheel drives torque=rear-wheel and drives the power * speed * rear-wheel speed ratio * transmission rotary inertia factor.
And ISG is as front end motor, object reference torque needs to consider that in HCU, gear, speed, starting, transmission turn The factors such as the dynamic inertia factor influence, i.e., formula is expressed as follows:
Front motor target torque=front motor drives power * speed * gear speed ratio * and is driven the rotary inertia factor.
And the management of the BMS power of battery then can go out current mesh according to the state and battery system state computation of current SOC Capable power is marked, specific as follows:
Battery target power=battery target power control function (SOC state, battery system state parameter).
Wherein, battery target power includes following related power:
Battery target power=(peak-peak charge power, maximum rated charge power, peak-peak work done power, most Wholesale is set for function power).
Relative to the shift of transmission control theory of conventional torque control, it is mixed that the method for the present embodiment simplifies multi power source Close power shift control power and torque conversion trouble (need to convert power flow control to torque flow control before shift, Torque-flow is synthesized into power flow again again after shift) so that power control directly applies to shift process, not only it is easier to manage Solution, and shift quality is also obviously improved.
In order to more intuitively illustrate the advantage in above-described embodiment scheme, below to be used under 60% throttle of single power source It is traditional based on torque Shifting and being compared based on power Shifting using the present embodiment.
Figure 15 is that being shifted gears in a concrete application example based on power demarcates the schematic diagram of vehicle wheel power, is root According to driving power demand and engine characteristics based on speed and throttle, the driving power MAP chart of the vehicle of calibration.Figure 16 is The schematic diagram of the power contrast based on torque and power Shifting in one concrete application example, is shifted gears according to torque Row of the engine under the power distribution of each gear and 60% throttle of power Shifting under 60% throttle of policy calculation Vehicle power.Based on vehicle accelerating curve under the calculated various gears based on torque Shifting of Figure 15 and Figure 16 and it is based on function The vehicle acceleration curve of rate Shifting.Identical shift revolving speed point is taken for both strategies, so as to obtain vehicle The schematic diagram for the vehicle acceleration curve comparison for accelerating to highest gear from starting is as shown in figure 17.Then two kinds of plans of real steering vectors Data slightly, and emulated based on measured data, the vehicle shifted gears based on torque and shifted gears based on power emulated is added Speed data curve difference is as illustrated in figures 19 and 20.Based on above-mentioned each schematic diagram as it can be seen that application scheme is changed based on power The accelerating curve of the vehicle engine assembly control method of gear is more steady, has grade shift so as to effectively solve shift front and back The discontinuous problem of bring vehicle power improves vehicle shift quality
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.

Claims (10)

1.一种车辆动力总成控制方法，其特征在于，包括步骤：1. a vehicle powertrain control method, is characterized in that, comprises the steps: 获取车辆的当前油门开度、当前车速、当前档位速比、传动转动惯量因子、当前档位；Obtain the vehicle's current accelerator opening, current vehicle speed, current gear ratio, transmission moment of inertia factor, and current gear; 根据所述当前油门开度、所述当前车速确定驾驶功率；determining driving power according to the current accelerator opening degree and the current vehicle speed; 根据所述当前车速、所述当前档位速比、所述传动转动惯量因子、所述当前油门开度、所述当前档位以及所述驾驶功率确定驾驶扭矩；determining a driving torque according to the current vehicle speed, the current gear ratio, the transmission moment of inertia factor, the current accelerator opening, the current gear, and the driving power; 根据所述驾驶功率和所述驾驶扭矩确定TCU请求扭矩；determining a TCU request torque based on the drive power and the drive torque; 根据所述驾驶扭矩进行车辆动力控制，根据所述TCU请求扭矩进行变速箱控制。Vehicle power control is performed according to the driving torque, and transmission control is performed according to the TCU request torque. 2.根据权利要求1所述的车辆动力总成控制方法，其特征在于，所述确定驾驶扭矩的方式包括：2. The vehicle powertrain control method according to claim 1, wherein the method for determining the driving torque comprises: 根据所述当前车速、所述当前档位速比、所述传动转动惯量因子以及所述驾驶功率，确定行车驾驶扭矩；According to the current vehicle speed, the current gear ratio, the transmission moment of inertia factor and the driving power, determining the driving torque; 根据所述当前油门开度、所述当前档位以及所述当前档位速比，确定起步驾驶扭矩；determining the starting driving torque according to the current accelerator opening, the current gear, and the current gear ratio; 根据所述行车驾驶扭矩、所述起步驾驶扭矩确定发动机目标驾驶扭矩；Determine the engine target driving torque according to the driving driving torque and the starting driving torque; 根据所述发动机目标驾驶扭矩以及驾驶扭矩的取值范围，确定所述驾驶扭矩。The driving torque is determined according to the target driving torque of the engine and the value range of the driving torque. 3.根据权利要求2所述的车辆动力总成控制方法，其特征在于，根据所述驾驶功率和所述驾驶扭矩确定TCU请求扭矩的方式包括：3. The vehicle powertrain control method according to claim 2, wherein the manner of determining the torque requested by the TCU according to the driving power and the driving torque comprises: 获取车辆的当前转速、发动机能力扭矩；Get the current speed of the vehicle, engine capacity torque; 根据所述行车驾驶扭矩、所述起步驾驶扭矩、所述当前转速、所述驾驶功率，确定变速箱目标驾驶扭矩；Determine the gearbox target driving torque according to the driving torque, the starting driving torque, the current rotational speed, and the driving power; 根据所述发动机能力扭矩和所述变速箱目标驾驶扭矩确定所述TCU请求扭矩。The TCU request torque is determined based on the engine capable torque and the transmission target drive torque. 4.根据权利要求1所述的车辆动力总成控制方法，其特征在于，还包括步骤：获取发动机能力扭矩、前电机能力扭矩、后电机能力扭矩、当前SOC状态、后轮速比；4 . The vehicle powertrain control method according to claim 1 , further comprising the step of: obtaining engine capability torque, front motor capability torque, rear motor capability torque, current SOC state, and rear wheel speed ratio; 5 . 所述确定驾驶扭矩包括确定前轮驾驶扭矩和确定后轮驾驶扭矩：The determining of the driving torque includes determining the front wheel driving torque and determining the rear wheel driving torque: 根据所述当前车速、所述当前档位速比、所述传动转动惯量因子以及所述驾驶功率，确定行车驾驶扭矩；根据所述当前油门开度、所述当前档位以及所述当前档位速比，确定起步驾驶扭矩；根据所述行车驾驶扭矩、所述起步驾驶扭矩确定目标驾驶扭矩；根据所述目标驾驶扭矩以及驾驶扭矩的取值范围，确定总驾驶扭矩；根据所述总驾驶扭矩、所述发动机能力扭矩及所述前电机能力扭矩确定所述前轮驾驶扭矩；According to the current vehicle speed, the current gear ratio, the transmission moment of inertia factor and the driving power, the driving torque is determined; according to the current accelerator opening, the current gear and the current gear speed ratio, determine the starting driving torque; determine the target driving torque according to the driving driving torque and the starting driving torque; determine the total driving torque according to the target driving torque and the value range of the driving torque; determine the total driving torque according to the total driving torque , the engine capability torque and the front motor capability torque determine the front wheel driving torque; 根据所述后电机能力扭矩、所述当前车速以及所述当前SOC状态确定后轮驾驶能力功率；根据所述驾驶功率、前轮驾驶能力功率、后轮驾驶能力功率确定后轮驾驶功率；根据所述后轮驾驶功率、所述当前车速、所述后轮速比、所述传动转动惯量因子以及所述后轮驾驶能力功率确定所述后轮驾驶扭矩。Determine rear-wheel driving capability power according to the rear motor capability torque, the current vehicle speed, and the current SOC state; determine rear-wheel driving power according to the driving power, front-wheel driving capability power, and rear-wheel driving capability power; The rear wheel driving power, the current vehicle speed, the rear wheel speed ratio, the transmission moment of inertia factor, and the rear wheel driving capability power determine the rear wheel driving torque. 5.根据权利要求4所述的车辆动力总成控制方法，其特征在于，包括下述各项中的至少一项：5. The vehicle powertrain control method according to claim 4, characterized in that it comprises at least one of the following items: 第一项：根据所述驾驶功率确定TCU请求扭矩的方式包括：根据所述前轮驾驶扭矩、所述后轮驾驶扭矩确定所述TCU请求扭矩；The first item: the manner of determining the TCU request torque according to the driving power includes: determining the TCU request torque according to the front wheel driving torque and the rear wheel driving torque; 第二项：还包括步骤：根据发动机能力扭矩、转速、传动效率因子和传动转动惯量因子确定发动机驾驶功率能力；根据转速、转速能力扭矩、电机效率因子和当前SOC状态确定前电机驾驶功率能力；根据发动机驾驶功率能力、前电机驾驶功率能力确定前轮驾驶功率；根据所述发动机能力扭矩、所述目标驾驶扭矩、所述前轮驾驶功率确定发动机驾驶扭矩；根据所述驾驶扭矩进行车辆动力控制的方式包括：根据所述发动机驾驶扭矩对发动机进行控制；The second item: also includes the steps of: determining the engine driving power capability according to the engine capability torque, rotational speed, transmission efficiency factor and transmission moment of inertia factor; determining the front motor driving power capability according to the rotational speed, rotational speed capability torque, motor efficiency factor and the current SOC state; Determine the front wheel driving power according to the engine driving power capability and the front motor driving power capability; determine the engine driving torque according to the engine capability torque, the target driving torque, and the front wheel driving power; perform vehicle power control according to the driving torque The method includes: controlling the engine according to the engine driving torque; 第三项：还包括步骤：根据所述后轮驾驶功率、当前车速、后轮速比以及传动转动惯量因子确定后轮驾驶扭矩；根据所述驾驶扭矩进行车辆动力控制的方式包括：根据所述后轮驾驶扭矩对后驱电机进行控制；The third item: further includes the step of: determining the rear wheel driving torque according to the rear wheel driving power, the current vehicle speed, the rear wheel speed ratio and the transmission moment of inertia factor; the method of performing vehicle power control according to the driving torque includes: according to the The rear wheel driving torque controls the rear drive motor; 第四项：还包括步骤：根据前电机驾驶功率、所述当前车速、所述当前档位速比、所述传动转动惯量因子确定前电机目标扭矩；根据所述驾驶扭矩进行车辆动力控制的方式包括：根据所述前电机目标扭矩对前驱电机进行控制；The fourth item: further includes the steps of: determining the target torque of the front motor according to the driving power of the front motor, the current vehicle speed, the current gear ratio, and the transmission moment of inertia factor; the method of performing vehicle power control according to the driving torque Including: controlling the front drive motor according to the target torque of the front motor; 第五项：还包括步骤：获取电池系统状态参数；根据所述当前SOC状态、所述电池系统状态参数确定电池目标功率，所述电池目标功率包括最大峰值充电功率、最大额定充电功率、最大峰值做功功率、最大额定做功功率；根据所述驾驶扭矩进行车辆动力控制的方式包括：根据所述电池目标功率对电池系统进行控制。The fifth item: further includes the steps of: acquiring battery system state parameters; determining battery target power according to the current SOC state and the battery system state parameters, where the battery target power includes maximum peak charging power, maximum rated charging power, and maximum peak charging power working power, maximum rated working power; the manner of performing vehicle power control according to the driving torque includes: controlling the battery system according to the battery target power. 6.一种车辆动力总成控制系统，包括动力控制单元和变速箱控制单元，其特征在于：6. A vehicle powertrain control system, comprising a power control unit and a gearbox control unit, characterized in that: 所述动力控制单元包括驾驶功率确定模块、驾驶扭矩确定模块，所述变速箱控制单元包括TCU请求扭矩确定模块；The power control unit includes a driving power determination module and a driving torque determination module, and the transmission control unit includes a TCU request torque determination module; 所述驾驶功率确定模块，用于根据当前油门开度、当前车速确定驾驶功率；The driving power determining module is configured to determine the driving power according to the current accelerator opening and the current vehicle speed; 所述驾驶扭矩确定模块，用于根据所述当前车速、当前档位速比、传动转动惯量因子、所述当前油门开度、当前档位以及所述驾驶功率确定驾驶扭矩；the driving torque determination module, configured to determine the driving torque according to the current vehicle speed, the current gear ratio, the transmission moment of inertia factor, the current accelerator opening, the current gear, and the driving power; 所述TCU请求扭矩确定模块，用于根据所述驾驶功率和所述驾驶扭矩确定TCU请求扭矩；the TCU request torque determination module, configured to determine the TCU request torque according to the driving power and the driving torque; 所述动力控制单元根据所述驾驶扭矩进行车辆动力控制，所述变速箱控制单元根据所述TCU请求扭矩进行变速箱控制。The power control unit performs vehicle power control according to the driving torque, and the transmission control unit performs transmission control according to the TCU request torque. 7.根据权利要求6所述的车辆动力总成控制系统，其特征在于，所述动力控制单元为发动机控制单元，所述驾驶扭矩确定模块包括：7. The vehicle powertrain control system according to claim 6, wherein the power control unit is an engine control unit, and the driving torque determination module comprises: 第一行车驾驶扭矩子模块，用于根据所述当前车速、所述当前档位速比、所述传动转动惯量因子以及所述驾驶功率，确定行车驾驶扭矩；a first driving torque sub-module, configured to determine the driving torque according to the current vehicle speed, the current gear ratio, the transmission moment of inertia factor and the driving power; 第一起步驾驶扭矩子模块，用于根据所述当前油门开度、所述当前档位以及所述当前档位速比，确定起步驾驶扭矩；a first starting driving torque sub-module, configured to determine the starting driving torque according to the current accelerator opening, the current gear and the current gear ratio; 第一目标驾驶扭矩子模块，用于根据所述行车驾驶扭矩、所述起步驾驶扭矩确定发动机目标驾驶扭矩；a first target driving torque sub-module, configured to determine an engine target driving torque according to the driving driving torque and the starting driving torque; 第一驾驶扭矩子模块，用于根据所述发动机目标驾驶扭矩以及驾驶扭矩的取值范围，确定所述驾驶扭矩。The first driving torque sub-module is configured to determine the driving torque according to the target driving torque of the engine and the value range of the driving torque. 8.根据权利要求7所述的车辆动力总成控制系统，其特征在于，所述TCU请求扭矩确定模块，根据所述行车驾驶扭矩、所述起步驾驶扭矩、当前转速、所述驾驶功率，确定变速箱目标驾驶扭矩；并根据发动机能力扭矩和所述变速箱目标驾驶扭矩确定所述TCU请求扭矩。8 . The vehicle powertrain control system according to claim 7 , wherein the TCU request torque determination module determines the driving torque according to the driving torque, the starting driving torque, the current speed, and the driving power. 9 . and the TCU request torque is determined according to the engine capability torque and the transmission target drive torque. 9.根据权利要求6所述的车辆动力总成控制系统，其特征在于，所述动力控制单元为混合动力控制单元，所述驾驶扭矩包括前轮驾驶扭矩和后轮驾驶扭矩；所述驾驶扭矩确定模块包括：9 . The vehicle powertrain control system according to claim 6 , wherein the power control unit is a hybrid control unit, and the driving torque includes a front wheel driving torque and a rear wheel driving torque; the driving torque Determining modules include: 第二行车驾驶扭矩子模块，用于根据所述当前车速、所述当前档位速比、所述传动转动惯量因子以及所述驾驶功率，确定行车驾驶扭矩；a second driving torque sub-module, configured to determine the driving torque according to the current vehicle speed, the current gear ratio, the transmission moment of inertia factor and the driving power; 第二起步驾驶扭矩子模块，用于根据所述当前油门开度、所述当前档位以及所述当前档位速比，确定起步驾驶扭矩；a second starting driving torque sub-module, configured to determine the starting driving torque according to the current accelerator opening, the current gear and the current gear ratio; 第二目标驾驶扭矩子模块，用于根据所述行车驾驶扭矩、所述起步驾驶扭矩确定目标驾驶扭矩；a second target driving torque sub-module, configured to determine a target driving torque according to the driving driving torque and the starting driving torque; 前轮驾驶扭矩子模块，用于根据所述目标驾驶扭矩以及驾驶扭矩的取值范围，确定总驾驶扭矩；并根据所述总驾驶扭矩、发动机能力扭矩及前电机能力扭矩确定所述前轮驾驶扭矩；a front wheel driving torque sub-module, used for determining the total driving torque according to the target driving torque and the value range of the driving torque; and determining the front wheel driving torque according to the total driving torque, the engine capacity torque and the front motor capacity torque torque; 后轮驾驶功率子模块，用于根据后电机能力扭矩、所述当前车速以及当前SOC状态确定后轮驾驶能力功率；根据所述驾驶功率、前轮驾驶能力功率、后轮驾驶能力功率确定后轮驾驶功率；The rear wheel driving power sub-module is used to determine the rear wheel driving capability power according to the rear motor capability torque, the current vehicle speed and the current SOC state; determine the rear wheel driving capability power according to the driving power, the front wheel driving capability power and the rear wheel driving capability power driving power; 后轮驾驶扭矩子模块，用于根据所述后轮驾驶功率、所述当前车速、后轮速比、所述传动转动惯量因子以及所述后轮驾驶能力功率确定所述后轮驾驶扭矩。A rear-wheel driving torque sub-module, configured to determine the rear-wheel driving torque according to the rear-wheel driving power, the current vehicle speed, the rear-wheel speed ratio, the transmission moment of inertia factor, and the rear-wheel driving capability power. 10.根据权利要求9所述的车辆动力总成控制系统，其特征在于，包括下述各项中的至少一项：10. The vehicle powertrain control system according to claim 9, characterized in that it comprises at least one of the following: 第一项：所述TCU请求扭矩确定模块根据所述前轮驾驶扭矩、所述后轮驾驶扭矩确定所述TCU请求扭矩；The first item: the TCU request torque determination module determines the TCU request torque according to the front wheel driving torque and the rear wheel driving torque; 第二项：所述系统还包括发动机控制单元；所述发动机控制单元包括发动机驾驶扭矩确定模块，用于根据发动机能力扭矩、转速、传动效率因子和传动转动惯量因子确定发动机驾驶功率能力，根据转速、转速能力扭矩、电机效率因子和当前SOC状态确定前电机驾驶功率能力，根据发动机驾驶功率能力、前电机驾驶功率能力确定前轮驾驶功率；根据所述发动机能力扭矩、所述目标驾驶扭矩、所述前轮驾驶功率确定发动机驾驶扭矩；所述发动机控制单元根据所述驾驶扭矩进行车辆动力控制的方式包括：根据所述发动机驾驶扭矩对发动机进行控制；The second item: the system further includes an engine control unit; the engine control unit includes an engine driving torque determination module, which is used to determine the engine driving power capability according to the engine capacity torque, the rotational speed, the transmission efficiency factor and the transmission moment of inertia factor, and according to the rotational speed , speed capability torque, motor efficiency factor and current SOC state to determine the front motor driving power capability, and determine the front wheel driving power according to the engine driving power capability and the front motor driving power capability; according to the engine capability torque, the target driving torque, all The front wheel driving power determines the driving torque of the engine; the manner in which the engine control unit performs vehicle power control according to the driving torque includes: controlling the engine according to the driving torque of the engine; 第三项：所述系统还包括电机控制单元，所述电机控制单元包括后轮驾驶扭矩确定模块；所述后轮驾驶扭矩确定模块，用于根据所述后轮驾驶功率、当前车速、后轮速比以及传动转动惯量因子确定后轮驾驶扭矩；所述电机控制单元根据所述后轮驾驶扭矩对后驱电机进行控制；Item 3: The system further includes a motor control unit, and the motor control unit includes a rear wheel driving torque determination module; the rear wheel driving torque determination module is configured to The speed ratio and the transmission moment of inertia factor determine the rear-wheel driving torque; the motor control unit controls the rear-drive motor according to the rear-wheel driving torque; 第四项：所述系统还包括电机控制单元，所述电机控制单元包括电机目标扭矩确定模块；所述电机目标扭矩确定模块，用于根据前电机驾驶功率、所述当前车速、所述当前档位速比、所述传动转动惯量因子确定前电机目标扭矩；所述电机控制单元根据所述前电机目标扭矩对前驱电机进行控制；Item 4: The system further includes a motor control unit, and the motor control unit includes a motor target torque determination module; the motor target torque determination module is configured to determine the motor target torque according to the driving power of the front motor, the current vehicle speed, the current gear The speed ratio and the transmission moment of inertia factor determine the target torque of the front motor; the motor control unit controls the front motor according to the target torque of the front motor; 第五项：所述系统还包括电池控制管理单元；所述电池控制管理单元包括电池功率确定模块，用于获取当前SOC状态、电池系统状态参数；并根据所述当前SOC状态、所述电池系统状态参数确定电池目标功率，所述电池目标功率包括最大峰值充电功率、最大额定充电功率、最大峰值做功功率、最大额定做功功率；所述电池控制管理单元根据所述电池目标功率对电池系统进行控制。Item 5: The system further includes a battery control management unit; the battery control management unit includes a battery power determination module for acquiring the current SOC state and battery system state parameters; and according to the current SOC state, the battery system The state parameter determines the battery target power, and the battery target power includes the maximum peak charging power, the maximum rated charging power, the maximum peak working power, and the maximum rated working power; the battery control management unit controls the battery system according to the battery target power .
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