CN104828077A - Hybrid vehicle and torque distribution method thereof - Google Patents
Hybrid vehicle and torque distribution method thereof Download PDFInfo
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- CN104828077A CN104828077A CN201410367737.7A CN201410367737A CN104828077A CN 104828077 A CN104828077 A CN 104828077A CN 201410367737 A CN201410367737 A CN 201410367737A CN 104828077 A CN104828077 A CN 104828077A
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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
- 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
- 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
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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
- B60W10/24—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means
- B60W10/26—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means for electrical energy, e.g. batteries or capacitors
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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
- B60W2510/1015—Input shaft speed, e.g. turbine 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
- B60W2510/1025—Input 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
- 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
- B60W2540/00—Input parameters relating to occupants
- B60W2540/16—Ratio selector position
- B60W2540/165—Rate of change
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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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- 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)
Abstract
The invention discloses a torque distribution method of a hybrid vehicle. The method comprises the following steps: obtaining the state of charge (SOC) of a power battery of the hybrid vehicle, a rotary speed n of the input end of a gear box of the hybrid vehicle and a required torque tr of the input end of the gear box; obtaining first, second, third, fourth and fifth torques ta, tb, tc, td and te according to the rotary speed n of the input end of the gear box and a five-line five-area characteristic curve of the hybrid vehicle; and subjecting an engine and a motor of the hybrid vehicle to torque distribution according to the required torque tr of the input end of the gear box and the first, second, third, fourth and fifth torques ta, tb, tc, td and te. The torque distribution method uses the five-line five-area characteristic curve to optimize the torque distribution between the engine and the motor, and the fuel economical efficiency of the hybrid vehicle is greatly increased. The invention also discloses the hybrid vehicle.
Description
Technical field
The present invention relates to Development of HEV Technology field, particularly a kind of torque distribution method of hybrid vehicle and a kind of hybrid vehicle.
Background technology
At present, the torque distribution control method of the representational hybrid vehicle of most is exactly " three line four districts " method.
" three line four districts " method refers to that the total external characteristics of hybrid vehicle, optimal fuel economy and minimum torque limit three characteristic curves and whole universal characteristic is divided into four regions, as shown in Figure 1.Wherein, full engine load work when transmission input torque is greater than full-throttle characteristics, by motor " peak load shifting "; When transmission input torque is between full-throttle characteristics and optimal fuel economy curve, driving engine is provided along the work of optimal fuel economy curve, excess power by motor; When transmission input torque is between optimal fuel economy curve and minimum torque restrictive curve, driving engine is generated electricity along the work of optimal fuel economy curve, excess power by motor; When transmission input torque is less than minimum torque restrictive curve, because driving engine discharge is poor, the pure electronic operating mode of general employing.
But, the maximum shortcoming of " three line four districts " method is exactly the mode of operation only considering driving engine, do not control to be optimized control to motor torque, such as, when engine speed is 1500r/min, the now corresponding torque of optimal fuel economy is 400Nm, if now demand torque is 401Nm, according to " three line four districts " method, engine output torque is 400Nm, motor output torque is only 1Nm, although whole motor efficiency is higher, but it is still very low to carry out work efficiency with 1Nm state, the shortcoming of Torque-sharing strategy is now attended to one thing and lose sight of another, only optimize driving engine and have ignored motor, viewed from whole structure, the fuel economy of car load can not get improving well.
Summary of the invention
Object of the present invention is intended at least solve above-mentioned technological deficiency.
For this reason, one object of the present invention is a kind of torque distribution method proposing hybrid vehicle, adopts five line five zone properties curves to optimize the distribution of demand torque between driving engine and motor, substantially increases the fuel economy of hybrid vehicle.
Another object of the present invention is to propose a kind of hybrid vehicle.
For achieving the above object, the torque distribution method of a kind of hybrid vehicle that one aspect of the present invention embodiment proposes, comprises the following steps: obtain the state-of-charge SOC of the electrokinetic cell of described hybrid vehicle, the rotating speed n of the transmission input of described hybrid vehicle and the demand torque tr of described transmission input, the first to the 5th torque ta is obtained according to the rotating speed n of described transmission input and five line five zone properties curves of described hybrid vehicle, tb, tc, td, te, wherein, described five line five zone properties curves comprise the full-throttle characteristics of described hybrid vehicle, the driving engine optimal fuel economy curve of described hybrid vehicle and the motor minimum torque restrictive curve sum of described hybrid vehicle, the driving engine optimal fuel economy curve of described hybrid vehicle, the difference of the driving engine optimal fuel economy curve of described hybrid vehicle and the motor minimum torque restrictive curve of described hybrid vehicle, the driving engine minimum torque restrictive curve of described hybrid vehicle, to the 5th torque ta, tb, tc, td, te, torque distribution is carried out to the driving engine of described hybrid vehicle and motor according to the SOC of described electrokinetic cell, the demand torque tr of described transmission input and described first.
According to the torque distribution method of the hybrid vehicle of the embodiment of the present invention, five line five zone properties curves are adopted to carry out torque distribution to the motor of hybrid vehicle and driving engine, consider driving engine and motor performance in torque distribution process simultaneously, take into full account the running state of driving engine and motor, guarantee that driving engine and motor are all in optimum mode of operation, avoid the phenomenon that in " three line four districts " method, engine efficiency is higher, electrical efficiency is lower, the torque of motor and driving engine is all optimized configuration, substantially increases the fuel economy of hybrid vehicle.And the existing condition of this torque distribution method and hybrid vehicle is more identical, be easy to realize.
According to one embodiment of present invention, the rotating speed n of described transmission input obtains according to the gear speed ratio of the speed of a motor vehicle of described hybrid vehicle and described hybrid vehicle, and the demand torque tr of described transmission input obtains according to the wheel place demand torque of described hybrid vehicle and described gear speed ratio.
According to one embodiment of present invention, when described electrokinetic cell be in can discharge regime time, wherein, if the demand torque tr of described transmission input is greater than the first torque ta and the demand torque tr of described transmission input is greater than the maximum permission torque tmm sum of the 3rd torque tc and motor, the torque being then assigned to described motor is described maximum permission torque tmm, and the torque being assigned to driving engine is tr-tmm; If the demand torque tr of described transmission input is greater than described first torque ta and the demand torque tr of described transmission input is less than or equal to the maximum permission torque tmm sum of described 3rd torque tc and described motor, the torque being then assigned to described motor is tr-tc, and the torque being assigned to described driving engine is described 3rd torque tc.
According to one embodiment of present invention, if the demand torque tr of described transmission input is less than or equal to described first torque ta, wherein, if the demand torque tr of described transmission input is greater than the second torque tb and the demand torque tr of described transmission input is greater than the maximum permission torque tmm sum of described 3rd torque tc and described motor, the torque being then assigned to described motor is described maximum permission torque tmm and the torque being assigned to described driving engine is tr-tmm or the torque being assigned to described motor is 0 and the torque being assigned to described driving engine is the demand torque tr of described transmission input, wherein, if the torque being assigned to described motor be described maximum permission torque tmm and the torque being assigned to described driving engine is tr-tmm time engine efficiency be greater than the torque being assigned to described motor be 0 and the torque being assigned to described driving engine is the demand torque tr of described transmission input time engine efficiency, the torque being then assigned to described motor is described maximum permission torque tmm and the torque being assigned to described driving engine is tr-tmm, if the demand torque tr of described transmission input is greater than described second torque tb and the demand torque tr of described transmission input is less than or equal to the maximum permission torque tmm sum of described 3rd torque tc and described motor, the torque being then assigned to described motor is tr-tc, and the torque being assigned to described driving engine is described 3rd torque tc.
According to one embodiment of present invention, if the demand torque tr of described transmission input is less than or equal to described second torque tb, wherein, if the demand torque tr of described transmission input is greater than the 4th torque td, the torque being then assigned to described motor is 0, and the torque being assigned to described driving engine is the demand torque tr of described transmission input.
According to one embodiment of present invention, if the demand torque tr of described transmission input is less than or equal to described 4th torque td and is greater than the 5th torque te, wherein, if the SOC of described electrokinetic cell is greater than the SOC threshold limit value SOCmax of described electrokinetic cell, the torque being then assigned to described motor is 0, and the torque being assigned to described driving engine is the demand torque tr of described transmission input, if the SOC of described electrokinetic cell is less than or equal to the SOC threshold limit value SOCmax of described electrokinetic cell and the demand torque tr of described transmission input is less than the difference of the maximum permission torque tmm of described 3rd torque tc and described motor, the torque being then assigned to described motor is-tmm and the torque being assigned to described driving engine is tr+tmm or the torque being assigned to described motor is 0 and the torque being assigned to described driving engine is the demand torque tr of described transmission input, wherein, if the torque being assigned to described motor be-tmm and the torque being assigned to described driving engine is tr+tmm time engine efficiency be greater than the torque being assigned to described motor be 0 and the torque being assigned to described driving engine is the demand torque tr of described transmission input time engine efficiency, the torque being then assigned to described motor is-tmm and the torque being assigned to described driving engine is tr+tmm, if the SOC of described electrokinetic cell is less than or equal to the SOC threshold limit value SOCmax of described electrokinetic cell and the demand torque tr of described transmission input is more than or equal to the difference of the maximum permission torque tmm of described 3rd torque tc and described motor, the torque being then assigned to described motor is tr-tc, and the torque being assigned to described driving engine is tc.
According to one embodiment of present invention, if the demand torque tr of described transmission input is less than or equal to described 5th torque te, then the torque being assigned to described motor is 0, and the torque being assigned to described driving engine is the demand torque tr of described transmission input.
According to one embodiment of present invention, when described electrokinetic cell be in need charge condition time, wherein, if the minimum limit value SOCmin that the demand torque tr of described transmission input is greater than the first torque ta, the SOC of described electrokinetic cell is greater than described electrokinetic cell and the demand torque tr of described transmission input are greater than the maximum permission torque tmm sum of the 3rd torque tc and motor, the torque being then assigned to described motor is described maximum permission torque tmm, and the torque being assigned to driving engine is tr-tmm; If the minimum limit value SOCmin that the demand torque tr of described transmission input is greater than described first torque ta, the SOC of described electrokinetic cell is greater than described electrokinetic cell and the demand torque tr of described transmission input are less than or equal to the maximum permission torque tmm sum of described 3rd torque tc and described motor, the torque being then assigned to described motor is tr-tc, and the torque being assigned to described driving engine is described 3rd torque tc; If the demand torque tr of described transmission input is greater than described first torque ta and the SOC of described electrokinetic cell is less than or equal to the minimum limit value SOCmin of described electrokinetic cell, the torque being then assigned to described motor is 0, and the torque being assigned to described driving engine is the demand torque tr of described transmission input.
According to one embodiment of present invention, if the demand torque tr of described transmission input is less than or equal to described first torque ta, wherein, if the demand torque tr of described transmission input is greater than the second torque tb, the SOC of described electrokinetic cell is greater than the minimum limit value SOCmin of described electrokinetic cell and the demand torque tr of described transmission input is greater than the maximum permission torque tmm sum of described 3rd torque tc and described motor, the torque being then assigned to described motor is described maximum permission torque tmm and the torque being assigned to described driving engine is tr-tmm or the torque being assigned to described motor is 0 and the torque being assigned to described driving engine is the demand torque tr of described transmission input, wherein, if the torque being assigned to described motor be described maximum permission torque tmm and the torque being assigned to described driving engine is tr-tmm time engine efficiency be greater than the torque being assigned to described motor be 0 and the torque being assigned to described driving engine is the demand torque tr of described transmission input time engine efficiency, the torque being then assigned to described motor is described maximum permission torque tmm and the torque being assigned to described driving engine is tr-tmm, if the minimum limit value SOCmin that the demand torque tr of described transmission input is greater than described second torque tb, the SOC of described electrokinetic cell is greater than described electrokinetic cell and the demand torque tr of described transmission input are less than or equal to the maximum permission torque tmm sum of described 3rd torque tc and described motor, the torque being then assigned to described motor is tr-tc, and the torque being assigned to described driving engine is described 3rd torque tc, if the demand torque tr of described transmission input is greater than described second torque tb and the SOC of described electrokinetic cell is less than or equal to the minimum limit value SOCmin of described electrokinetic cell, the torque being then assigned to described motor is 0, and the torque being assigned to described driving engine is the demand torque tr of described transmission input.
According to one embodiment of present invention, if the demand torque tr of described transmission input is less than or equal to described second torque tb, wherein, if the demand torque tr of described transmission input is greater than the 4th torque td, the torque being then assigned to described motor is 0, and the torque being assigned to described driving engine is the demand torque tr of described transmission input.
According to one embodiment of present invention, if the demand torque tr of described transmission input is less than or equal to described 4th torque td and is greater than the 5th torque te, wherein, if the demand torque tr of described transmission input is less than the difference of the maximum permission torque tmm of described 3rd torque tc and described motor, the torque being then assigned to described motor is-tmm and the torque being assigned to described driving engine is tr+tmm or the torque being assigned to described motor is 0 and the torque being assigned to described driving engine is the demand torque tr of described transmission input, wherein, if the torque being assigned to described motor be-tmm and the torque being assigned to described driving engine is tr+tmm time engine efficiency be greater than the torque being assigned to described motor be 0 and the torque being assigned to described driving engine is the demand torque tr of described transmission input time engine efficiency, the torque being then assigned to described motor is-tmm and the torque being assigned to described driving engine is tr+tmm, if the demand torque tr of described transmission input is more than or equal to the difference of the maximum permission torque tmm of described 3rd torque tc and described motor, then the torque being assigned to described motor is tr-tc, and the torque being assigned to described driving engine is tc.
According to one embodiment of present invention, if the demand torque tr of described transmission input is less than or equal to described 5th torque te, then the torque being assigned to described motor is 0, and the torque being assigned to described driving engine is the demand torque tr of described transmission input.
In addition, the present invention on the other hand embodiment also proposed a kind of hybrid vehicle, and it performs the torque distribution method of above-mentioned hybrid vehicle.
According to the hybrid vehicle of the embodiment of the present invention, by adopting five line five zone properties curves, torque distribution is carried out to motor and driving engine, consider driving engine and motor performance in torque distribution process simultaneously, take into full account the running state of driving engine and motor, guarantee that driving engine and motor are all in optimum mode of operation, avoid the phenomenon that in " three line four districts " method, engine efficiency is higher, electrical efficiency is lower, the torque of motor and driving engine is all optimized configuration, substantially increases the fuel economy of hybrid vehicle.
The aspect that the present invention adds and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
The present invention above-mentioned and/or additional aspect and advantage will become obvious and easy understand from the following description of the accompanying drawings of embodiments, wherein:
Fig. 1 is the total external characteristics of existing hybrid vehicle, optimal fuel economy and minimum torque limit the schematic diagram that whole universal characteristic is divided into four regions by three characteristic curves;
Fig. 2 is the diagram of circuit of the torque distribution method of hybrid vehicle according to the embodiment of the present invention;
Fig. 3 is the schematic diagram by five lines, the whole universal characteristic of hybrid vehicle being divided into five regions according to an embodiment of the invention;
Fig. 4 is the efficiency characteristic figure of motor according to an embodiment of the invention; And
Fig. 5 (a) and Fig. 5 (b) are the diagram of circuit of the torque distribution method of hybrid vehicle according to the present invention's specific embodiment.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
Disclosing hereafter provides many different embodiments or example is used for realizing different structure of the present invention.Of the present invention open in order to simplify, hereinafter the parts of specific examples and setting are described.Certainly, they are only example, and object does not lie in restriction the present invention.In addition, the present invention can in different example repeat reference numerals and/or letter.This repetition is to simplify and clearly object, itself does not indicate the relation between discussed various embodiment and/or setting.In addition, the various specific technique that the invention provides and the example of material, but those of ordinary skill in the art can recognize the property of can be applicable to of other techniques and/or the use of other materials.In addition, fisrt feature described below second feature it " on " structure can comprise the embodiment that the first and second features are formed as directly contact, also can comprise other feature and be formed in embodiment between the first and second features, such first and second features may not be direct contacts.
In describing the invention, it should be noted that, unless otherwise prescribed and limit, term " installation ", " being connected ", " connection " should be interpreted broadly, such as, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be directly be connected, also indirectly can be connected by intermediary, for the ordinary skill in the art, the concrete meaning of above-mentioned term can be understood as the case may be.
Describe with reference to the accompanying drawings according to the torque distribution method of the hybrid vehicle of the embodiment of the present invention and the hybrid vehicle performing this torque distribution method.
Fig. 2 is the diagram of circuit of the torque distribution method of hybrid vehicle according to the embodiment of the present invention.As shown in Figure 2, the torque distribution method of this hybrid vehicle comprises the following steps:
S1, obtains the SOC (State Of Charge, state-of-charge) of electrokinetic cell, the rotating speed n of transmission input of hybrid vehicle and the demand torque tr of transmission input of hybrid vehicle.
According to one embodiment of present invention, the rotating speed n of transmission input obtains according to the gear speed ratio of the speed of a motor vehicle of hybrid vehicle and hybrid vehicle, and the demand torque tr of transmission input obtains according to the wheel place demand torque of hybrid vehicle and gear speed ratio.That is, in an embodiment of the present invention, need the SOC of acquisition electrokinetic cell, the demand torque of wheel place, the speed of a motor vehicle and transmission gear, the rotating speed n of transmission input can be calculated according to the speed of a motor vehicle and current shift speed ratio, the demand torque tr of transmission input can be calculated according to the demand torque of wheel place and gear speed ratio.
S2, the first to the 5th torque ta is obtained according to the rotating speed n of transmission input and five line five zone properties curves of hybrid vehicle, tb, tc, td, te, wherein, described five line five zone properties curves comprise the full-throttle characteristics of described hybrid vehicle, the driving engine optimal fuel economy curve of described hybrid vehicle and the motor minimum torque restrictive curve sum of described hybrid vehicle, the driving engine optimal fuel economy curve of described hybrid vehicle, the difference of the driving engine optimal fuel economy curve of described hybrid vehicle and the motor minimum torque restrictive curve of described hybrid vehicle, the driving engine minimum torque restrictive curve of described hybrid vehicle.
Wherein, as shown in Figure 3, a represents the full-throttle characteristics of hybrid vehicle, b represents driving engine optimal fuel economy curve and motor minimum torque restrictive curve sum, c represents driving engine optimal fuel economy curve, d represents the difference of driving engine optimal fuel economy curve and motor minimum torque restrictive curve, and e represents driving engine minimum torque restrictive curve; Article five, characteristic curve is respectively a, b, c, d, e, and 1. 5th district are respectively, 2., 3., 4., 5..As shown in Figure 3, there is curve d and e when rotating speed n is between 800 ~ 900r/min and overlap, when rotating speed n is higher than 2000r/min, there is a and b, a and c and overlap.
According to one embodiment of present invention, Fig. 4 is the efficiency characteristic figure of motor, wherein, f represents the maximum torque curve of motor, g represents the minimum torque restrictive curve of motor, the efficiency of torque motor when below curve g of motor is lower, and in Fig. 3, curve b is that the distance of curve c moving g obtains, and curve d is that the distance that curve c moves down g obtains.
S3, carries out torque distribution to the 5th torque ta, tb, tc, td, te to the driving engine of hybrid vehicle and motor according to the SOC of electrokinetic cell, the demand torque tr and first of transmission input.
According to a specific embodiment of the present invention, as shown in Fig. 5 (a), the torque distribution method of above-mentioned hybrid vehicle comprises the following steps:
S501, input parameter comprises the SOC of electrokinetic cell, the demand torque of wheel place, the speed of a motor vehicle and transmission gear.Wherein, the rotating speed n of transmission input can be calculated according to the speed of a motor vehicle and current shift speed ratio, on Fig. 3, interpolation can determine torque i.e. first to the 5th torque ta, tb, tc, td, te that now each curve is corresponding by n, the demand torque tr of transmission input can be calculated according to the demand torque of wheel place and gear speed ratio.
S502, judging whether electrokinetic cell is in can discharge regime.If so, step S503 is performed; If not, the flow process in Fig. 5 (b) is performed.
Wherein, it should be noted that, " can discharge " or " need charging " state of definition electrokinetic cell is: judge whether the SOC of electrokinetic cell is greater than and highly limit Gh, if so, then judges that electrokinetic cell is as can discharge regime; Judging whether the SOC of electrokinetic cell is less than lower bound Gl, if so, then judging that electrokinetic cell is as needing charge condition; If the SOC of electrokinetic cell is between Gh and Gl, and vehicle by static transfer starting state to time, can judge that electrokinetic cell is can discharge regime.In addition, when judging whether wheel place demand torque Treq is greater than 60%Te_max (wherein 60% can demarcate), and Te_max represents that driving engine is in total external characteristics and is passed to the torque at wheel place under current shift, wherein in mild hybrid electric vehicle, Te_max represents that driving engine is passed to the torque at wheel place, if middle severe hybrid power automobile, Te_max is passed to the torque at wheel place after representing driving engine and motor superposition, if, then judge that electrokinetic cell is as can discharge regime, otherwise for needing charge condition; " can discharge " under usual condition and only power-assisted, " need charging " can represent and can only generate electricity.When demand torque is larger, although electrokinetic cell is " need charging " state, as long as the SOC of electrokinetic cell is not less than the minimum limit value SOCmin of electrokinetic cell, the exportable electricity of electrokinetic cell, meets chaufeur and travel demand; When demand torque is less, although electrokinetic cell is " can electric discharge " state, as long as but the SOC of electrokinetic cell not higher than the threshold limit value SOCmax of electrokinetic cell, electrokinetic cell is chargeable, improve engine load rate.
S503, judges whether tr is greater than ta.If so, step S504 is performed; If not, step S507 is performed.
S504, judges whether tr is greater than tc and tmm sum.If so, step S505 is performed; If not, step S506 is performed.Wherein, tmm is the maximum permission torque of motor.
S505, is assigned to the torque ten=tr-tmm of driving engine, is assigned to the torque tm=tmm of motor.
S506，ten＝tc，tm＝tr-tc。
Therefore say, according to one embodiment of present invention, when described electrokinetic cell be in can discharge regime time, wherein, if the demand torque tr of described transmission input is greater than the first torque ta and the demand torque tr of described transmission input is greater than the maximum permission torque tmm sum of the 3rd torque tc and motor, the torque being then assigned to described motor is described maximum permission torque tmm, and the torque being assigned to driving engine is tr-tmm; If the demand torque tr of described transmission input is greater than described first torque ta and the demand torque tr of described transmission input is less than or equal to the maximum permission torque tmm sum of described 3rd torque tc and described motor, the torque being then assigned to described motor is tr-tc, and the torque being assigned to described driving engine is described 3rd torque tc.
S507, judges whether tr>tb.If so, then step S508 is performed; If not, then step S511 is performed.
S508, judges whether tr is greater than tc and tmm sum.If so, step S509 is performed; If not, step S510 is performed.
S509, scheme is ten=tr-tmm, tm=tmm or scheme b a)) ten=tr, tm=0, compare a) and b) in engine efficiency, adopt the scheme that engine efficiency is high.
S510，ten＝tc，tm＝tr-tc。
Namely say, if the demand torque tr of described transmission input is less than or equal to described first torque ta, wherein, if the demand torque tr of described transmission input is greater than the second torque tb and the demand torque tr of described transmission input is greater than the maximum permission torque tmm sum of described 3rd torque tc and described motor, the torque being then assigned to described motor is described maximum permission torque tmm and the torque being assigned to described driving engine is tr-tmm or the torque being assigned to described motor is 0 and the torque being assigned to described driving engine is the demand torque tr of described transmission input, wherein, if the torque being assigned to described motor be described maximum permission torque tmm and the torque being assigned to described driving engine is tr-tmm time engine efficiency be greater than the torque being assigned to described motor be 0 and the torque being assigned to described driving engine is the demand torque tr of described transmission input time engine efficiency, the torque being then assigned to described motor is described maximum permission torque tmm and the torque being assigned to described driving engine is tr-tmm, if the demand torque tr of described transmission input is greater than described second torque tb and the demand torque tr of described transmission input is less than or equal to the maximum permission torque tmm sum of described 3rd torque tc and described motor, the torque being then assigned to described motor is tr-tc, and the torque being assigned to described driving engine is described 3rd torque tc.
S511, judges whether tr>td.If so, step S512 is performed; If not, step S513 is performed.
S512，ten＝tr、tm＝0。That is, if the demand torque tr of described transmission input is less than or equal to described second torque tb, wherein, if the demand torque tr of described transmission input is greater than the 4th torque td, the torque being then assigned to described motor is 0, and the torque being assigned to described driving engine is the demand torque tr of described transmission input.
S513, judges whether tr>te.If so, step S514 is performed; If not, step S519 is performed.
S514, judges whether the SOC>SOCmax of electrokinetic cell.If so, step S515 is performed; If not, step S516 is performed.
S515，ten＝tr，tm＝0。
S516, judges whether tr<tc-tmm.If so, step S517 is performed; If not, step S518 is performed.
S517, scheme c) ten=tr+tmm, tm=-tmm or scheme d) ten=tr, tm=0, compare c) and d) in engine efficiency, adopt the scheme that engine efficiency is high.
S518，ten＝tc，tm＝tr-tc。
Therefore say, according to one embodiment of present invention, if the demand torque tr of described transmission input is less than or equal to described 4th torque td and is greater than the 5th torque te, wherein, if the SOC of described electrokinetic cell is greater than the SOC threshold limit value SOCmax of described electrokinetic cell, the torque being then assigned to described motor is 0, and the torque being assigned to described driving engine is the demand torque tr of described transmission input, if the SOC of described electrokinetic cell is less than or equal to the SOC threshold limit value SOCmax of described electrokinetic cell and the demand torque tr of described transmission input is less than the difference of the maximum permission torque tmm of described 3rd torque tc and described motor, the torque being then assigned to described motor is-tmm and the torque being assigned to described driving engine is tr+tmm or the torque being assigned to described motor is 0 and the torque being assigned to described driving engine is the demand torque tr of described transmission input, wherein, if the torque being assigned to described motor be-tmm and the torque being assigned to described driving engine is tr+tmm time engine efficiency be greater than the torque being assigned to described motor be 0 and the torque being assigned to described driving engine is the demand torque tr of described transmission input time engine efficiency, the torque being then assigned to described motor is-tmm and the torque being assigned to described driving engine is tr+tmm, if the SOC of described electrokinetic cell is less than or equal to the SOC threshold limit value SOCmax of described electrokinetic cell and the demand torque tr of described transmission input is more than or equal to the difference of the maximum permission torque tmm of described 3rd torque tc and described motor, the torque being then assigned to described motor is tr-tc, and the torque being assigned to described driving engine is tc.
S519，ten＝tr，tm＝0。If namely the demand torque tr of described transmission input is less than or equal to described 5th torque te, then the torque being assigned to described motor is 0, and the torque being assigned to described driving engine is the demand torque tr of described transmission input.
Flow process in Fig. 5 (b) comprises:
S520, judging whether electrokinetic cell is in needs charge condition.If so, step S521 is performed; If not, termination process.
S521, judges whether tr>ta.If so, step S522 is performed; If not, step S527 is performed.
S522, judges whether the SOC>SOCmin of electrokinetic cell.If so, step S523 is performed; If not, step S526 is performed.
S523, judges whether tr>tc+tmm.If so, step S524 is performed; If not, step S525 is performed.
S524，ten＝tr-tmm，tm＝tmm。
S525，ten＝tc，tm＝tr-tc。
S526，ten＝tr，tm＝0。
Therefore say, when described electrokinetic cell be in need charge condition time, wherein, if the minimum limit value SOCmin that the demand torque tr of described transmission input is greater than the first torque ta, the SOC of described electrokinetic cell is greater than described electrokinetic cell and the demand torque tr of described transmission input are greater than the maximum permission torque tmm sum of the 3rd torque tc and motor, the torque being then assigned to described motor is described maximum permission torque tmm, and the torque being assigned to driving engine is tr-tmm; If the minimum limit value SOCmin that the demand torque tr of described transmission input is greater than described first torque ta, the SOC of described electrokinetic cell is greater than described electrokinetic cell and the demand torque tr of described transmission input are less than or equal to the maximum permission torque tmm sum of described 3rd torque tc and described motor, the torque being then assigned to described motor is tr-tc, and the torque being assigned to described driving engine is described 3rd torque tc; If the demand torque tr of described transmission input is greater than described first torque ta and the SOC of described electrokinetic cell is less than or equal to the minimum limit value SOCmin of described electrokinetic cell, the torque being then assigned to described motor is 0, and the torque being assigned to described driving engine is the demand torque tr of described transmission input.
S527, judges whether tr>tb.If so, step S528 is performed; If not, step S533 is performed.
S528, judges whether the SOC>SOCmin of electrokinetic cell.If so, step S529 is performed; If not, step S532 is performed.
S529, judges whether tr>tc+tmm.If so, step S530 is performed; If not, step S531 is performed.
S530, scheme is ten=tr-tmm, tm=tmm or scheme b a)) ten=tr, tm=0, compare a) and b) in engine efficiency, adopt the scheme that engine efficiency is high.
S531，ten＝tc，tm＝tr-tc。
S532，ten＝tr，tm＝0。
Namely say, in an embodiment of the present invention, if the demand torque tr of described transmission input is less than or equal to described first torque ta, wherein, if the demand torque tr of described transmission input is greater than the second torque tb, the SOC of described electrokinetic cell is greater than the minimum limit value SOCmin of described electrokinetic cell and the demand torque tr of described transmission input is greater than the maximum permission torque tmm sum of described 3rd torque tc and described motor, the torque being then assigned to described motor is described maximum permission torque tmm and the torque being assigned to described driving engine is tr-tmm or the torque being assigned to described motor is 0 and the torque being assigned to described driving engine is the demand torque tr of described transmission input, wherein, if the torque being assigned to described motor be described maximum permission torque tmm and the torque being assigned to described driving engine is tr-tmm time engine efficiency be greater than the torque being assigned to described motor be 0 and the torque being assigned to described driving engine is the demand torque tr of described transmission input time engine efficiency, the torque being then assigned to described motor is described maximum permission torque tmm and the torque being assigned to described driving engine is tr-tmm, if the minimum limit value SOCmin that the demand torque tr of described transmission input is greater than described second torque tb, the SOC of described electrokinetic cell is greater than described electrokinetic cell and the demand torque tr of described transmission input are less than or equal to the maximum permission torque tmm sum of described 3rd torque tc and described motor, the torque being then assigned to described motor is tr-tc, and the torque being assigned to described driving engine is described 3rd torque tc, if the demand torque tr of described transmission input is greater than described second torque tb and the SOC of described electrokinetic cell is less than or equal to the minimum limit value SOCmin of described electrokinetic cell, the torque being then assigned to described motor is 0, and the torque being assigned to described driving engine is the demand torque tr of described transmission input.
S533, judges whether tr>td.If so, step S534 is performed; If not, step S535 is performed.
S534，ten＝tr，tm＝0。That is, if the demand torque tr of described transmission input is less than or equal to described second torque tb, wherein, if the demand torque tr of described transmission input is greater than the 4th torque td, the torque being then assigned to described motor is 0, and the torque being assigned to described driving engine is the demand torque tr of described transmission input.
S535, judges whether tr>te.If so, step S536 is performed; If not, step S539 is performed.
S536, judges whether tr<tc-tmm.If so, step S537 is performed; If not, step S538 is performed.
S537, scheme c) ten=tr+tmm, tm=-tmm or scheme d) ten=tr, tm=0, compare c) and d) in engine efficiency, adopt the scheme that engine efficiency is high.
S538，ten＝tc，tm＝tr-tc。
Therefore say, if the demand torque tr of described transmission input is less than or equal to described 4th torque td and is greater than the 5th torque te, wherein, if the demand torque tr of described transmission input is less than the difference of the maximum permission torque tmm of described 3rd torque tc and described motor, the torque being then assigned to described motor is-tmm and the torque being assigned to described driving engine is tr+tmm or the torque being assigned to described motor is 0 and the torque being assigned to described driving engine is the demand torque tr of described transmission input, wherein, if the torque being assigned to described motor be-tmm and the torque being assigned to described driving engine is tr+tmm time engine efficiency be greater than the torque being assigned to described motor be 0 and the torque being assigned to described driving engine is the demand torque tr of described transmission input time engine efficiency, the torque being then assigned to described motor is-tmm and the torque being assigned to described driving engine is tr+tmm, if the demand torque tr of described transmission input is more than or equal to the difference of the maximum permission torque tmm of described 3rd torque tc and described motor, then the torque being assigned to described motor is tr-tc, and the torque being assigned to described driving engine is tc.
S539，ten＝tr，tm＝0。If namely the demand torque tr of described transmission input is less than or equal to described 5th torque te, then the torque being assigned to described motor is 0, and the torque being assigned to described driving engine is the demand torque tr of described transmission input.
In sum, the torque distribution method of the hybrid vehicle of the embodiment of the present invention has taken into full account driving engine and motor operating state, guarantee that motor and driving engine are all in optimum state, avoid the phenomenon that in " three line four districts " method, engine efficiency is higher, electrical efficiency is lower, and the existing condition of this torque distribution method and hybrid vehicle is more identical.
According to the torque distribution method of the hybrid vehicle of the embodiment of the present invention, five line five zone properties curves are adopted to carry out torque distribution to the motor of hybrid vehicle and driving engine, consider driving engine and motor performance in torque distribution process simultaneously, take into full account the running state of driving engine and motor, guarantee that driving engine and motor are all in optimum mode of operation, avoid the phenomenon that in " three line four districts " method, engine efficiency is higher, electrical efficiency is lower, the torque of motor and driving engine is all optimized configuration, substantially increases the fuel economy of hybrid vehicle.And the existing condition of this torque distribution method and hybrid vehicle is more identical, be easy to realize.
In addition, embodiments of the invention also proposed a kind of hybrid vehicle, and it performs the torque distribution method of above-mentioned hybrid vehicle.
According to the hybrid vehicle of the embodiment of the present invention, by adopting five line five zone properties curves, torque distribution is carried out to motor and driving engine, consider driving engine and motor performance in torque distribution process simultaneously, take into full account the running state of driving engine and motor, guarantee that driving engine and motor are all in optimum mode of operation, avoid the phenomenon that in " three line four districts " method, engine efficiency is higher, electrical efficiency is lower, the torque of motor and driving engine is all optimized configuration, substantially increases the fuel economy of hybrid vehicle.
Describe and can be understood in diagram of circuit or in this any process otherwise described or method, represent and comprise one or more for realizing the module of the code of the executable instruction of the step of specific logical function or process, fragment or part, and the scope of the preferred embodiment of the present invention comprises other realization, wherein can not according to order that is shown or that discuss, comprise according to involved function by the mode while of basic or by contrary order, carry out n-back test, this should understand by embodiments of the invention person of ordinary skill in the field.
In flow charts represent or in this logic otherwise described and/or step, such as, the sequencing list of the executable instruction for realizing logic function can be considered to, may be embodied in any computer-readable medium, for instruction execution system, device or equipment (as computer based system, comprise the system of treater or other can from instruction execution system, device or equipment fetch instruction and perform the system of instruction) use, or to use in conjunction with these instruction execution systems, device or equipment.With regard to this specification sheets, " computer-readable medium " can be anyly can to comprise, store, communicate, propagate or transmission procedure for instruction execution system, device or equipment or the device that uses in conjunction with these instruction execution systems, device or equipment.The example more specifically (non-exhaustive list) of computer-readable medium comprises following: the electrical connection section (electronics package) with one or more wiring, portable computer diskette box (magnetic device), random access memory (RAM), read-only memory (ROM) (ROM), erasablely edit read-only memory (ROM) (EPROM or flash memory), fiber device, and portable optic disk read-only memory (ROM) (CDROM).In addition, computer-readable medium can be even paper or other suitable media that can print described program thereon, because can such as by carrying out optical scanning to paper or other media, then carry out editing, decipher or carry out process with other suitable methods if desired and electronically obtain described program, be then stored in computer storage.
Should be appreciated that each several part of the present invention can realize with hardware, software, firmware or their combination.In the above-described embodiment, multiple step or method can with to store in memory and the software performed by suitable instruction execution system or firmware realize.Such as, if realized with hardware, the same in another embodiment, can realize by any one in following technology well known in the art or their combination: the discrete logic with the logic gates for realizing logic function to data-signal, there is the special IC of suitable combinatory logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) etc.
Those skilled in the art are appreciated that realizing all or part of step that above-described embodiment method carries is that the hardware that can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, this program perform time, step comprising embodiment of the method one or a combination set of.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, also can be that the independent physics of unit exists, also can be integrated in a module by two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, and the form of software function module also can be adopted to realize.If described integrated module using the form of software function module realize and as independently production marketing or use time, also can be stored in a computer read/write memory medium.
The above-mentioned storage medium mentioned can be read-only memory (ROM), disk or CD etc.
In the description of this specification sheets, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments without departing from the principles and spirit of the present invention, scope of the present invention is by claims and equivalency thereof.
Claims (13)
1. a torque distribution method for hybrid vehicle, is characterized in that, comprise the following steps:
Obtain the state-of-charge SOC of the electrokinetic cell of described hybrid vehicle, the rotating speed n of the transmission input of described hybrid vehicle and the demand torque tr of described transmission input;
The first to the 5th torque ta is obtained according to the rotating speed n of described transmission input and five line five zone properties curves of described hybrid vehicle, tb, tc, td, te, wherein, described five line five zone properties curves comprise the full-throttle characteristics of described hybrid vehicle, the driving engine optimal fuel economy curve of described hybrid vehicle and the motor minimum torque restrictive curve sum of described hybrid vehicle, the driving engine optimal fuel economy curve of described hybrid vehicle, the difference of the driving engine optimal fuel economy curve of described hybrid vehicle and the motor minimum torque restrictive curve of described hybrid vehicle, the driving engine minimum torque restrictive curve of described hybrid vehicle,
To the 5th torque ta, tb, tc, td, te, torque distribution is carried out to the driving engine of described hybrid vehicle and motor according to the SOC of described electrokinetic cell, the demand torque tr of described transmission input and described first.
2. the torque distribution method of hybrid vehicle as claimed in claim 1, it is characterized in that, the rotating speed n of described transmission input obtains according to the gear speed ratio of the speed of a motor vehicle of described hybrid vehicle and described hybrid vehicle, and the demand torque tr of described transmission input obtains according to the wheel place demand torque of described hybrid vehicle and described gear speed ratio.
3. the torque distribution method of hybrid vehicle as claimed in claim 1, is characterized in that, when described electrokinetic cell be in can discharge regime time, wherein,
If the demand torque tr of described transmission input is greater than the first torque ta and the demand torque tr of described transmission input is greater than the maximum permission torque tmm sum of the 3rd torque tc and motor, the torque being then assigned to described motor is described maximum permission torque tmm, and the torque being assigned to driving engine is tr-tmm;
If the demand torque tr of described transmission input is greater than described first torque ta and the demand torque tr of described transmission input is less than or equal to the maximum permission torque tmm sum of described 3rd torque tc and described motor, the torque being then assigned to described motor is tr-tc, and the torque being assigned to described driving engine is described 3rd torque tc.
4. the torque distribution method of hybrid vehicle as claimed in claim 3, is characterized in that, if the demand torque tr of described transmission input is less than or equal to described first torque ta, wherein,
If the demand torque tr of described transmission input is greater than the second torque tb and the demand torque tr of described transmission input is greater than the maximum permission torque tmm sum of described 3rd torque tc and described motor, the torque being then assigned to described motor is described maximum permission torque tmm and the torque being assigned to described driving engine is tr-tmm or the torque being assigned to described motor is 0 and the torque being assigned to described driving engine is the demand torque tr of described transmission input, wherein, if the torque being assigned to described motor be described maximum permission torque tmm and the torque being assigned to described driving engine is tr-tmm time engine efficiency be greater than the torque being assigned to described motor be 0 and the torque being assigned to described driving engine is the demand torque tr of described transmission input time engine efficiency, the torque being then assigned to described motor is described maximum permission torque tmm and the torque being assigned to described driving engine is tr-tmm,
If the demand torque tr of described transmission input is greater than described second torque tb and the demand torque tr of described transmission input is less than or equal to the maximum permission torque tmm sum of described 3rd torque tc and described motor, the torque being then assigned to described motor is tr-tc, and the torque being assigned to described driving engine is described 3rd torque tc.
5. the torque distribution method of hybrid vehicle as claimed in claim 4, is characterized in that, if the demand torque tr of described transmission input is less than or equal to described second torque tb, wherein,
If the demand torque tr of described transmission input is greater than the 4th torque td, then the torque being assigned to described motor is 0, and the torque being assigned to described driving engine is the demand torque tr of described transmission input.
6. the torque distribution method of hybrid vehicle as claimed in claim 5, is characterized in that, if the demand torque tr of described transmission input is less than or equal to described 4th torque td and is greater than the 5th torque te, wherein,
If the SOC of described electrokinetic cell is greater than the SOC threshold limit value SOCmax of described electrokinetic cell, then the torque being assigned to described motor is 0, and the torque being assigned to described driving engine is the demand torque tr of described transmission input;
If the SOC of described electrokinetic cell is less than or equal to the SOC threshold limit value SOCmax of described electrokinetic cell and the demand torque tr of described transmission input is less than the difference of the maximum permission torque tmm of described 3rd torque tc and described motor, the torque being then assigned to described motor is-tmm and the torque being assigned to described driving engine is tr+tmm or the torque being assigned to described motor is 0 and the torque being assigned to described driving engine is the demand torque tr of described transmission input, wherein, if the torque being assigned to described motor be-tmm and the torque being assigned to described driving engine is tr+tmm time engine efficiency be greater than the torque being assigned to described motor be 0 and the torque being assigned to described driving engine is the demand torque tr of described transmission input time engine efficiency, the torque being then assigned to described motor is-tmm and the torque being assigned to described driving engine is tr+tmm,
If the SOC of described electrokinetic cell is less than or equal to the SOC threshold limit value SOCmax of described electrokinetic cell and the demand torque tr of described transmission input is more than or equal to the difference of the maximum permission torque tmm of described 3rd torque tc and described motor, the torque being then assigned to described motor is tr-tc, and the torque being assigned to described driving engine is tc.
7. the torque distribution method of hybrid vehicle as claimed in claim 6, it is characterized in that, if the demand torque tr of described transmission input is less than or equal to described 5th torque te, the torque being then assigned to described motor is 0, and the torque being assigned to described driving engine is the demand torque tr of described transmission input.
8. the torque distribution method of hybrid vehicle as claimed in claim 1, is characterized in that, when described electrokinetic cell be in need charge condition time, wherein,
If the minimum limit value SOCmin that the demand torque tr of described transmission input is greater than the first torque ta, the SOC of described electrokinetic cell is greater than described electrokinetic cell and the demand torque tr of described transmission input are greater than the maximum permission torque tmm sum of the 3rd torque tc and motor, the torque being then assigned to described motor is described maximum permission torque tmm, and the torque being assigned to driving engine is tr-tmm;
If the minimum limit value SOCmin that the demand torque tr of described transmission input is greater than described first torque ta, the SOC of described electrokinetic cell is greater than described electrokinetic cell and the demand torque tr of described transmission input are less than or equal to the maximum permission torque tmm sum of described 3rd torque tc and described motor, the torque being then assigned to described motor is tr-tc, and the torque being assigned to described driving engine is described 3rd torque tc;
If the demand torque tr of described transmission input is greater than described first torque ta and the SOC of described electrokinetic cell is less than or equal to the minimum limit value SOCmin of described electrokinetic cell, the torque being then assigned to described motor is 0, and the torque being assigned to described driving engine is the demand torque tr of described transmission input.
9. the torque distribution method of hybrid vehicle as claimed in claim 8, is characterized in that, if the demand torque tr of described transmission input is less than or equal to described first torque ta, wherein,
If the demand torque tr of described transmission input is greater than the second torque tb, the SOC of described electrokinetic cell is greater than the minimum limit value SOCmin of described electrokinetic cell and the demand torque tr of described transmission input is greater than the maximum permission torque tmm sum of described 3rd torque tc and described motor, the torque being then assigned to described motor is described maximum permission torque tmm and the torque being assigned to described driving engine is tr-tmm or the torque being assigned to described motor is 0 and the torque being assigned to described driving engine is the demand torque tr of described transmission input, wherein, if the torque being assigned to described motor be described maximum permission torque tmm and the torque being assigned to described driving engine is tr-tmm time engine efficiency be greater than the torque being assigned to described motor be 0 and the torque being assigned to described driving engine is the demand torque tr of described transmission input time engine efficiency, the torque being then assigned to described motor is described maximum permission torque tmm and the torque being assigned to described driving engine is tr-tmm,
If the minimum limit value SOCmin that the demand torque tr of described transmission input is greater than described second torque tb, the SOC of described electrokinetic cell is greater than described electrokinetic cell and the demand torque tr of described transmission input are less than or equal to the maximum permission torque tmm sum of described 3rd torque tc and described motor, the torque being then assigned to described motor is tr-tc, and the torque being assigned to described driving engine is described 3rd torque tc;
If the demand torque tr of described transmission input is greater than described second torque tb and the SOC of described electrokinetic cell is less than or equal to the minimum limit value SOCmin of described electrokinetic cell, the torque being then assigned to described motor is 0, and the torque being assigned to described driving engine is the demand torque tr of described transmission input.
10. the torque distribution method of hybrid vehicle as claimed in claim 9, is characterized in that, if the demand torque tr of described transmission input is less than or equal to described second torque tb, wherein,
If the demand torque tr of described transmission input is greater than the 4th torque td, then the torque being assigned to described motor is 0, and the torque being assigned to described driving engine is the demand torque tr of described transmission input.
The torque distribution method of 11. hybrid vehicles as claimed in claim 10, is characterized in that, if the demand torque tr of described transmission input is less than or equal to described 4th torque td and is greater than the 5th torque te, wherein,
If the demand torque tr of described transmission input is less than the difference of the maximum permission torque tmm of described 3rd torque tc and described motor, the torque being then assigned to described motor is-tmm and the torque being assigned to described driving engine is tr+tmm or the torque being assigned to described motor is 0 and the torque being assigned to described driving engine is the demand torque tr of described transmission input, wherein, if the torque being assigned to described motor be-tmm and the torque being assigned to described driving engine is tr+tmm time engine efficiency be greater than the torque being assigned to described motor be 0 and the torque being assigned to described driving engine is the demand torque tr of described transmission input time engine efficiency, the torque being then assigned to described motor is-tmm and the torque being assigned to described driving engine is tr+tmm,
If the demand torque tr of described transmission input is more than or equal to the difference of the maximum permission torque tmm of described 3rd torque tc and described motor, then the torque being assigned to described motor is tr-tc, and the torque being assigned to described driving engine is tc.
The torque distribution method of 12. hybrid vehicles as claimed in claim 11, it is characterized in that, if the demand torque tr of described transmission input is less than or equal to described 5th torque te, the torque being then assigned to described motor is 0, and the torque being assigned to described driving engine is the demand torque tr of described transmission input.
13. 1 kinds of hybrid vehicles, is characterized in that, perform the torque distribution method of the hybrid vehicle according to any one of claim 1-12.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107097774A (en) * | 2017-04-13 | 2017-08-29 | 重庆大学 | The energy distributing method of parallel type hybrid vehicle |
| CN112706751A (en) * | 2021-01-13 | 2021-04-27 | 潍柴动力股份有限公司 | Torque distribution method and system of hybrid vehicle and hybrid vehicle |
| WO2023231980A1 (en) * | 2022-06-01 | 2023-12-07 | 中国第一汽车股份有限公司 | Torque distribution method and apparatus for hybrid vehicle |
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| CN107097774A (en) * | 2017-04-13 | 2017-08-29 | 重庆大学 | The energy distributing method of parallel type hybrid vehicle |
| CN112706751A (en) * | 2021-01-13 | 2021-04-27 | 潍柴动力股份有限公司 | Torque distribution method and system of hybrid vehicle and hybrid vehicle |
| CN112706751B (en) * | 2021-01-13 | 2022-06-24 | 潍柴动力股份有限公司 | Torque distribution method and system of hybrid vehicle and hybrid vehicle |
| WO2023231980A1 (en) * | 2022-06-01 | 2023-12-07 | 中国第一汽车股份有限公司 | Torque distribution method and apparatus for hybrid vehicle |
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