CN106671973A

CN106671973A - Hybrid electric vehicle and gear-shifting control method and system thereof

Info

Publication number: CN106671973A
Application number: CN201510751361.4A
Authority: CN
Inventors: 严二冬
Original assignee: Beiqi Foton Motor Co Ltd
Current assignee: Beijing Treasure Car Co Ltd
Priority date: 2015-11-06
Filing date: 2015-11-06
Publication date: 2017-05-17
Anticipated expiration: 2035-11-06
Also published as: CN106671973B

Abstract

The invention discloses a hybrid electric vehicle and a gear-shifting control method and system thereof. The gear-shifting control method includes the following steps that a current working mode of the hybrid electric vehicle is obtained; according to the current working mode, a gear-shifting strategy corresponding to the current working mode is obtained, wherein the hybrid electric vehicle has multiple working modes, and all the working modes in the multiple working modes have corresponding gear-shifting strategies; according to the obtained gear-shifting strategy corresponding to the current working mode, the hybrid electric vehicle is controlled for gear shifting. In this way, according to the hybrid electric vehicle and the gear-shifting control method and system thereof, different gear-shifting strategies are used in different working modes to meet different requirements for gears in different working modes, the better power performance and the better economic performance of the whole vehicle in all the working modes can be achieved accordingly, and the driveability of the whole vehicle is improved.

Description

Hybrid vehicle and its shift control method and shifting control system

Technical field

The present invention relates to automobile technical field, more particularly to a kind of shift control method, Yi Zhongyong for hybrid vehicle In the shifting control system and a kind of hybrid vehicle of hybrid vehicle.

Background technology

The shift control strategy of automobile is fairly simple in correlation technique, typically only considers that the fuel characteristic of engine, discharge are special The factor such as property and NVH (Noise, Vibration, Harshness, noise, vibration and sound vibration roughness), so as to can only Disclosure satisfy that under some specific operation mode to the demand shifted gears, such as demand under pure engine mode to shifting gears.

But, it has the drawback that, if only met to the demand shifted gears under some specific operation mode, may Cause the power performance under other mode of operations to lack, fuel-economy performance be deteriorated or electric quantity consumption increase etc. consequence.For example when When vehicle enters pure electrician's operation mode, because the efficiency characteristic of motor and the fuel characteristic of engine have very big difference, therefore Using the Shifting of the factors such as fuel characteristic, the emission performance based on engine formulation electric quantity consumption can be caused substantially to increase, Power performance can not reach the consequence such as expected.

The content of the invention

It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.For this purpose, one of the present invention Purpose is to propose a kind of shift control method for hybrid vehicle, and the method can be such that car load reaches in different operating More preferable power performance and economic performance are attained by under pattern.

Further object is that proposing a kind of shifting control system for hybrid vehicle.The present invention's is another Individual purpose is to propose a kind of hybrid vehicle.

To reach above-mentioned purpose, one aspect of the present invention embodiment proposes a kind of shift control method for hybrid vehicle, Comprise the following steps：Obtain the current operation mode of hybrid vehicle；Obtained according to the current operation mode and worked as with described The corresponding Shifting of front mode of operation, wherein, the hybrid vehicle includes multiple-working mode, various work Every kind of mode of operation in pattern has corresponding Shifting；According to the gearshift corresponding with the current operation mode for obtaining Hybrid vehicle is shifted gears described in policy control.

The shift control method for hybrid vehicle for proposing according to embodiments of the present invention, obtains according to current operation mode Shifting corresponding with current operation mode, and according to Shifting corresponding with the current operation mode control mixing for obtaining Power vehicle is shifted gears.Thus, the method for the embodiment of the present invention adopts different Shiftings under different mode of operations, To the different demands of gear under to adapt to different working modes, and then car load is set to be attained by each of these modes of operation preferably Power performance and economic performance, lift the cornering ability of car load.

Some embodiments of the invention, the multiple-working mode include pure electrician's operation mode, pure engine working mode, Power generation operation pattern in parallel and power-assisted mode of operation in parallel.

Some embodiments of the invention, when the current operation mode of the hybrid vehicle is pure electrician's operation mode When, Shifting corresponding with pure electrician's operation mode is the first Shifting, and first Shifting is according to motor Efficiency distribution curve and motor external characteristic curve obtain；When the current operation mode of the hybrid vehicle is institute When stating power generation operation pattern in parallel, Shifting corresponding with the power generation operation pattern in parallel is the second Shifting, described Efficiency distribution curve acquisition of second Shifting according to the fuel characteristic curve, engine test bench characteristic and motor of engine； When the current operation mode of the hybrid vehicle is the pure engine working mode, with the pure engine Working mould The corresponding Shifting of formula is the 3rd Shifting, and the 3rd Shifting is according to the fuel characteristic curve of engine and starts The external characteristic curve of machine is obtained；When the current operation mode of the hybrid vehicle is the power-assisted mode of operation in parallel, Shifting corresponding with the power-assisted mode of operation in parallel is the 4th Shifting, and the 4th Shifting is according to engine Fuel characteristic curve, the external characteristic curve after the efficiency distribution curve of motor and motor are coupled with engine obtains.

Some embodiments of the invention, the hybrid vehicle includes motor, engine, clutch and speed changer, Wherein, when the current operation mode of the hybrid vehicle is pure electrician's operation mode, the clutch separation, institute State motor drives the hybrid electric vehicle to sail by the speed changer, and the engine does not work；When the mixing When the current operation mode of power vehicle is the power generation operation pattern in parallel, the clutch is combined, the engine driving The hybrid electric vehicle is sailed, while motor described in the driven by engine generates electricity；When working as the hybrid vehicle When front mode of operation is the pure engine working mode, the clutch is combined, hybrid power described in the engine driving Running car, and the motor do not work；When the current operation mode of the hybrid vehicle is the power-assisted work in parallel During operation mode, the clutch is combined, and the engine and the motor drive the hybrid electric vehicle to sail simultaneously.

To reach above-mentioned purpose, another aspect of the present invention embodiment proposes a kind of gearshift control system for hybrid vehicle System, including：Entire car controller, for the driving cycle and whole vehicle state according to hybrid vehicle the hybrid power is determined The current operation mode of automobile, and control the hybrid vehicle and run with the current operation mode；Transmission control list Unit, for obtaining the current operation mode of hybrid vehicle, and obtains and the current work according to the current operation mode The corresponding Shifting of operation mode, and it is described mixed according to Shifting corresponding with the current operation mode control for obtaining Close power vehicle to be shifted gears, wherein, the hybrid vehicle includes multiple-working mode, in the multiple-working mode Every kind of mode of operation there is corresponding Shifting.

The shifting control system for hybrid vehicle for proposing according to embodiments of the present invention, transmission control unit is according to ought Front mode of operation obtains Shifting corresponding with current operation mode, and is changed according to the corresponding with current operation mode of acquisition Gear policy control hybrid vehicle is shifted gears.Thus, the system of the embodiment of the present invention is adopted under different mode of operations Different Shiftings, to adapt to different working modes under different demands to gear, and then make car load in every kind of mode of operation Under be attained by more preferable power performance and economic performance, lift the cornering ability of car load.

To reach above-mentioned purpose, another aspect of the invention embodiment proposes a kind of hybrid vehicle, including described is used for The shifting control system of hybrid vehicle.

The hybrid vehicle for proposing according to embodiments of the present invention, by the above-mentioned gearshift control system for hybrid vehicle System, the different demands under different Shiftings are adopted under different mode of operations to adapt to different working modes to gear, And then make car load be attained by more preferable power performance and economic performance in each of these modes of operation, lift the cornering ability of car load.

Description of the drawings

Fig. 1 is the flow chart of the shift control method for hybrid vehicle according to embodiments of the present invention；

Fig. 2 is the flow chart of the acquisition methods of the first Shifting under pure electrician's operation mode according to an embodiment of the invention；

Fig. 3 is showing for the external characteristic curve of the efficiency distribution curve of motor according to an embodiment of the invention and motor It is intended to；

Fig. 4 is the gearshift curve synoptic diagram of the first Shifting under pure electrician's operation mode according to an embodiment of the invention；

Fig. 5 is the flow process of the acquisition methods of the second Shifting under power generation operation pattern in parallel according to an embodiment of the invention Figure；

Fig. 6 is showing for the external characteristic curve of the fuel characteristic curve of engine according to an embodiment of the invention and engine It is intended to；

Fig. 7 is the gearshift curve synoptic diagram of the second Shifting under power generation operation pattern in parallel according to an embodiment of the invention；

Fig. 8 is the flow process of the acquisition methods of the 3rd Shifting under pure engine working mode according to an embodiment of the invention Figure；

Fig. 9 is the gearshift curve synoptic diagram of the 3rd Shifting under pure engine working mode according to an embodiment of the invention；

Figure 10 is the flow process of the acquisition methods of the 4th Shifting under power-assisted mode of operation in parallel according to an embodiment of the invention Figure；

Figure 11 is that the gearshift curve of the 4th Shifting under power-assisted mode of operation in parallel according to an embodiment of the invention is illustrated Figure；

Figure 12 is the flow chart of the shift control method for hybrid vehicle according to a specific embodiment of the invention；

Figure 13 is the block diagram of the shifting control system for hybrid vehicle according to embodiments of the present invention；

Figure 14 is the structural representation of the hybrid power system of hybrid vehicle according to an embodiment of the invention.

Specific embodiment

Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein identical from start to finish Or similar label represents same or similar element or the element with same or like function.Retouch below with reference to accompanying drawing The embodiment stated is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.

Below with reference to the accompanying drawings come describe the embodiment of the present invention proposition the shift control method for hybrid vehicle, be used for The shifting control system and hybrid vehicle of hybrid vehicle.Wherein, hybrid vehicle may include motor, send out Motivation, clutch and speed changer.According to one embodiment of present invention, hybrid vehicle can adopt as shown in figure 14 mixing Dynamical system is closed, as shown in figure 14, engine 101, clutch 102 and motor 103 are sequentially coaxially connected, and By speed changer 104 by the power output of engine 101 and motor 103 driving forerunner and trailing wheel, also, motor 103 also can generate electricity under the drive of engine 101 thinks that electrokinetic cell 105 charges.But the mixing of the embodiment of the present invention is moved Power automobile is not limited to the hybrid power system shown in Figure 14, and alternatively other have the hybrid vehicle of speed changer.

It should be appreciated that with regard to hybrid vehicle and its each system, the specific configuration of mechanism, operation principle etc. It is prior art, and for well known to those of ordinary skill in the art, it is here for purposes of brevity, no longer detailed one by one Carefully repeat.

One aspect of the present invention embodiment proposes a kind of shift control method for hybrid vehicle.

Fig. 1 is the flow chart of the shift control method for hybrid vehicle according to embodiments of the present invention.As shown in figure 1, The shift control method is comprised the following steps：

S1：Obtain the current operation mode of hybrid vehicle.

Specifically, the entire car controller HCU (Hybrid Control Unit) of hybrid vehicle can be dynamic according to mixing The driving cycle and whole vehicle state of power automobile determines current operation mode, and then entire car controller HCU can be by work at present Pattern issues transmission control unit TCU (Transmission Control Unit) so that speed changer by CAN Control unit TCU gets current operation mode.Also, the controllable hybrid vehicles of entire car controller HCU are with true Fixed current operation mode traveling.

S2：Shifting corresponding with current operation mode is obtained according to current operation mode, wherein, hybrid vehicle bag Multiple-working mode is included, the every kind of mode of operation in multiple-working mode has corresponding Shifting.

S3：Shifting corresponding with current operation mode control hybrid vehicle according to obtaining is shifted gears.

Various Shiftings it should be noted that transmission control unit TCU can prestore, various Shiftings with it is various Mode of operation, Shifting is also different under different working modes.

Specifically, transmission control unit TCU is received after the current operation mode of entire car controller HCU transmissions, According to current operation mode and can obtain corresponding Shifting from various Shiftings for prestoring and shift gears curve.Speed changer control Unit TCU processed carries out gearshift control by obtaining Shifting and shifting gears after curve according to the gearshift curve, specifically, Transmission control unit TCU can obtain the current vehicle speed of hybrid vehicle and current accelerator pedal aperture, and then basis is worked as Front speed and current accelerator pedal aperture are compared to obtain comparison result in corresponding gearshift curve, and are tied according to comparing The gear gear of fruit control hybrid vehicle, the gear that for example can control hybrid vehicle according to comparison result is upgraded to by 1 gear 2 keep off or are reduced to 1 gear by 2 gears or keep gear constant.

Thus, the method for the embodiment of the present invention adopts different Shiftings under different mode of operations, to adapt to different works To the different demands of gear under operation mode, and then car load is set to be attained by more preferable power performance and Jing in each of these modes of operation Ji performance, lifts the cornering ability of car load.

A specific embodiment of the invention, multiple-working mode may include pure electrician's operation mode, pure engine Working mould Formula, power generation operation pattern in parallel and power-assisted mode of operation in parallel.It is described below hybrid power vapour under above four kinds of mode of operations The Shifting of car, operation principle.

Specifically, as shown in figure 14, when the current operation mode of hybrid vehicle is pure electrician's operation mode, clutch 102 Separate, motor 103 drives hybrid electric vehicle to sail by speed changer 104, and engine 101 does not work；Work as mixing When the current operation mode of power vehicle is power generation operation pattern in parallel, clutch 102 is combined, and engine 101 drives mixing Power vehicle is travelled, while 101 driving electric machine of engine 103 generates electricity thinks that electrokinetic cell 105 charges；Work as hybrid power When the current operation mode of automobile is pure engine working mode, clutch 102 is combined, and engine 101 drives hybrid power Running car, and motor 103 do not work；When the current operation mode of hybrid vehicle is power-assisted mode of operation in parallel, Clutch 102 is combined, and engine 101 and motor 103 drive hybrid electric vehicle to sail simultaneously.

Specifically, it is corresponding with pure electrician's operation mode when the current operation mode of hybrid vehicle is pure electrician's operation mode Shifting is the first Shifting, and the first Shifting can be according to the efficiency distribution curve of motor and the outer spy of motor Linearity curve is obtained.

That is, select under pure electrician's operation mode the first Shifting i.e. the first gearshift curve this first gearshift curve it is main It is to be obtained according to the efficiency distribution curve of motor and the external characteristic curve of motor.

Specifically, Shifting may include economy Shifting and dynamic property Shifting, under pure electrician's operation mode, root The first Shifting is obtained according to the efficiency distribution curve of motor and the external characteristic curve of motor to specifically include：According to electronic The most economical working region of the efficiency distribution curve acquisition motor of machine, and the most economical working region according to motor and acceleration The characteristic of pedal obtains the first economy Shifting；Turned according to the peak power that the external characteristic curve of motor obtains motor It is fast, and the characteristic of the max-power-output speed point according to motor and accelerator pedal obtains the first dynamic property Shifting；By One economy Shifting and the first dynamic property Shifting synthesize the first Shifting.

It should be noted that obtain the first economy Shifting when can be based on following principle, will motor operating point (should Operating point includes torque and rotating speed) the optimal economic region of motor is adjusted to as much as possible, to meet economy gearshift demand； Following principle can be based on when the first dynamic property Shifting is obtained, even if the rotating speed after gearshift can reach max-power-output speed Point, to meet dynamic property gearshift demand.

More specifically, following steps that can be according to Fig. 2 obtain the first Shifting：

S201：The efficiency distribution curve of motor and the external characteristic curve of motor are obtained, respectively execution step S202 and step Rapid S207.

S202：According to the economic work region of the efficiency distribution curve acquisition motor of motor.

By taking Fig. 3 as an example, Fig. 3 is the external characteristic curve and efficiency distribution curve of the motor of a specific embodiment of the invention Schematic diagram, wherein curve a represent external characteristic curve, and other curves beyond curve a represent efficiency distribution curve.By efficiency Distribution curve can be seen that the economic work region of this motor and be in 1500-3500rpm.

S203：According to the economic work region of the motor for obtaining, the corresponding most Jing of each power points in multiple power points is obtained Ji working speed.

Specifically, multiple different power points can be preset according to actual conditions, and with reference to the efficiency distribution curve of motor, is obtained Take the corresponding most economical working speed of each power points.More specifically, in the example of Fig. 3, curve c represents a plurality of invariable power Curve is multiple power points, can obtain every invariable power curve and has most economical point zero with reference to the efficiency distribution curve of motor, this Sample can obtain the corresponding most economical working speed of each power points.

S204：Relation between accelerator pedal aperture and most economical working speed is obtained according to the characteristic of accelerator pedal.

Wherein, under different pedal apertures, the power of motor is different, and then the rotating speed of motor is also different, so right Each power points in multiple power points, can obtain the corresponding accelerator pedal aperture of each power points according to the characteristic of accelerator pedal, And each power points has corresponding most economical working speed, so as to can obtain accelerator pedal aperture and most economical working speed it Between relation.

S205：Combined according to the Relation acquisition speed and accelerator pedal aperture between accelerator pedal aperture and most economical working speed It is corresponding closest to gear.

S206：Finally draw the relation between accelerator pedal, speed and gear to obtain the first economy Shifting, perform Step S211.

Specifically, accelerator pedal aperture determines power demand, and according to power demand any one accelerator pedal aperture pair can be obtained The most economical working speed answered, and motor speed value of any one speed under multiple gears can be obtained according to fast ratio, this Sample exists any one corresponding most economical working speed of accelerator pedal aperture such as aperture Ki and any one speed such as vehicle velocity V i Motor speed value under multiple gears is compared to obtain comparative result, according to comparative result will it is corresponding with aperture Ki most The corresponding gear of the immediate motor speed value of economic work rotating speed is corresponding closest to gear as aperture Ki and vehicle velocity V i, If the corresponding motor speed values of such as gear Di are Zi, and between the corresponding most economical working speed of aperture 1 and Zi Difference is minimum, then aperture Ki it is corresponding with vehicle velocity V i closest to gear be gear Di.The like, obtain other accelerator pedals Aperture and speed combination are corresponding closest to gear, finally draw multigroup speed, accelerator pedal aperture, the value of gear, and will Multigroup speed, accelerator pedal aperture, the value of gear are combined to obtain the first economy Shifting.

S207：The max-power-output speed point of motor is obtained according to the external characteristic curve of motor.

Wherein, from the motor external characteristic curve in Fig. 3, the max-power-output speed point of this motor is about 3000rpm.

S208：The corresponding gearshift rotating speed of each gear under multiple gears is obtained, so that the rotating speed after gearshift is remained essentially in most High-power rotating speed point.

Wherein, different gears have and do not compare at the same speed, thus can be changed with the most strong gearshift rotating speed of dynamic property under each gear Gear, so that motor speed remains essentially in max-power-output speed point after the completion of gearshift.

S209：Relation between accelerator pedal aperture and gearshift rotating speed is obtained according to the characteristic of accelerator pedal.

S210：According to the relation between accelerator pedal aperture and gearshift rotating speed, accelerator pedal, speed and gear can be finally drawn Between relation obtaining the first dynamic property Shifting.

S211：The first final Shifting i.e. is obtained according to the first economy Shifting and the first dynamic property Shifting One gearshift curve.

Wherein, the gearshift rotating speed in most economical working speed, step S208-S210 in step S203-S205 can refer to electricity The rotating speed of motivation.

Specifically, the first economy Shifting and the first dynamic property Shifting can be entered according to default pedal aperture threshold value Row synthesis, to synthesize the first final gearshift curve.For example, default pedal aperture threshold value can be 90%, when acceleration is stepped on Plate aperture is less than 90%, the economy plan of curve that the part in the first economy Shifting less than 90% is shifted gears as first Slightly part, when accelerator pedal aperture is more than or equal to 90%, will be more than or equal to 90% portion in the first dynamic property Shifting It is allocated as the dynamic property policy section of the first gearshift curve, the first final gearshift curve of such two parts synthesis.

Thus, according to above-mentioned steps S201-S211, you can obtain the first gearshift curve map under pure electrician's operation mode.At this In a bright example, first gearshift curve map can as shown in Fig. 4, wherein, solid line be upshift curve, dotted line is downshift Curve.By taking upshift as an example, when the aperture of accelerator pedal is k, it is u1 that 1 gear rises 2 gear correspondence speeds, and it is right that 2 gears rise 3 gears Speed is answered to be u2, it is u3 that 3 gears rise 4 gear correspondence speeds, and it is that u4 keeps off that 4 gears rise 5 gear correspondence speeds.

It is corresponding with power generation operation pattern in parallel when the current operation mode of hybrid vehicle is power generation operation pattern in parallel Shifting is the second Shifting, and the second Shifting is according to the fuel characteristic curve of engine, engine test bench characteristic and electricity The efficiency distribution curve acquisition of motivation.

That is, selecting the second Shifting i.e. the second gearshift curve under power generation operation pattern in parallel, this second gearshift is bent Line is mainly the efficiency distribution curve acquisition of fuel characteristic curve, engine test bench characteristic and motor according to engine.

Specifically, Shifting may include economy Shifting and dynamic property Shifting, under power generation operation pattern in parallel, According to the Shifting of efficiency distribution curve acquisition second tool of the fuel characteristic curve, engine test bench characteristic and motor of engine Body includes：The most economical work of engine is obtained respectively according to the fuel characteristic curve of engine and the efficiency distribution curve of motor Make the most economical working region of region and motor, and the most economical work of the most economical working region according to engine and motor The characteristic for making region and accelerator pedal obtains the second economy Shifting；Obtained according to the external characteristic curve of engine and started The max-power-output speed point of machine, and the characteristic of the max-power-output speed point according to engine and accelerator pedal obtains the second dynamic property Shifting；Second economy Shifting and the second dynamic property Shifting are synthesized into the second Shifting.

It should be noted that following principle can be based on when the second economy Shifting is obtained, will engine and motor Operating point (operating point include torque and rotating speed) be both adjusted to corresponding optimal economic region, to meet economy gearshift Demand；Following principle can be based on when the second dynamic property Shifting is obtained, even if the rotating speed after gearshift can reach maximum work Rate rotating speed point, to meet dynamic property gearshift demand.

More specifically, following steps that can be according to Fig. 5 obtain the second Shifting：

S301：Fuel characteristic curve, the efficiency distribution curve of motor and the external characteristic curve of engine of engine are obtained, Difference execution step S302 and step S307.

S302：Engine and motor are obtained respectively according to the fuel characteristic curve of engine and the efficiency distribution curve of motor Economic work region.

By taking Fig. 3 as an example, Fig. 3 is the external characteristic curve and efficiency distribution curve of the motor of a specific embodiment of the invention Schematic diagram, wherein curve a represent external characteristic curve, and other curves in curve a represent efficiency distribution curve.By efficiency point Cloth curve can be seen that the economic work region of this motor and be in 1500-3500rpm.

By taking Fig. 6 as an example, Fig. 6 is the external characteristic curve and fuel characteristic curve of the engine of a specific embodiment of the invention Schematic diagram, wherein curve b represent the external characteristic curve of engine, and other curves beyond curve b represent fuel characteristic curve. The economic work region that can be seen that this engine by fuel characteristic curve is in 1500-3500rpm.S303：According to acquisition Engine economic work region and the economic work region of motor, obtain each power points in multiple power points corresponding Most economical working speed.

Specifically, multiple different power points can be preset according to actual conditions, and combines the economic work region for having obtained, be obtained Take the corresponding most economical working speed of each power points.More specifically, in the example of Fig. 6, curve d represents a plurality of invariable power Curve is multiple power points, can obtain every invariable power curve and has most economical point zero with reference to the efficiency distribution curve of engine, this Sample can obtain the corresponding most economical working speed of each power points.

S304：Relation between accelerator pedal aperture and most economical working speed is obtained according to the characteristic of accelerator pedal.

Wherein, under different pedal apertures, the power of engine is different, and then the rotating speed of engine is also different, so right Each power points in multiple power points, can obtain the corresponding accelerator pedal aperture of each power points according to the characteristic of accelerator pedal, And each power points has corresponding most economical working speed, so as to can obtain accelerator pedal aperture and most economical working speed it Between relation.

S305：Combined according to the Relation acquisition accelerator pedal aperture and speed between accelerator pedal aperture and most economical working speed It is corresponding closest to gear.

S306：Finally draw the relation between accelerator pedal, speed and gear to obtain the second economy Shifting, perform Step S311.

Specifically, accelerator pedal aperture determines power demand, and according to power demand any one accelerator pedal aperture pair can be obtained The most economical working speed answered, and according to fast ratio can obtain engine speed value of any one speed under multiple gears (or Motor speed value), so by any one corresponding most economical working speed of accelerator pedal aperture such as aperture Ki and any one Engine speed value (or motor speed value) of speed such as vehicle velocity V i under multiple gears is compared and compares knot to obtain Really, will corresponding with aperture Ki immediate machine tachometer value of most economical working speed (or motor speed according to comparative result Value) corresponding gear is corresponding closest to gear as aperture Ki and vehicle velocity V i, if for example gear Di is corresponding started Machine tachometer value (or motor speed value) is Zi, and the difference between the corresponding most economical working speed of aperture 1 and Zi is minimum, Then aperture Ki it is corresponding with vehicle velocity V i closest to gear be gear Di.The like, obtain other accelerator pedal apertures and speed Combination is corresponding closest to gear, finally draws multigroup speed, accelerator pedal aperture, the value of gear, and by multigroup speed, Accelerator pedal aperture, the value of gear are combined to obtain the second economy Shifting.S307：According to the outer spy of engine Linearity curve obtains the max-power-output speed point of engine.

S308：The corresponding gearshift rotating speed of each gear under multiple gears is obtained, so that the rotating speed after gearshift is remained essentially in most High-power rotating speed point.

Wherein, different gears have and do not compare at the same speed, thus can be changed with the most strong gearshift rotating speed of dynamic property under each gear Gear, so that engine speed remains essentially in max-power-output speed point after the completion of gearshift.

S309：Relation between accelerator pedal aperture and gearshift rotating speed is obtained according to the characteristic of accelerator pedal.

S310：According to the relation between accelerator pedal aperture and gearshift rotating speed, accelerator pedal, speed and gear can be finally drawn Between relation obtaining the second dynamic property Shifting.

S311：The second final gearshift curve is obtained according to the second economy Shifting and the second dynamic property Shifting.

Wherein, the most economical working speed in step S303-S305 can refer to the rotating speed of engine or the rotating speed of motor, step Gearshift rotating speed in S308-S310 can refer to the rotating speed of engine.

Specifically, the second economy Shifting and the second dynamic property Shifting can be entered according to default pedal aperture threshold value Row synthesis, to synthesize the second final gearshift curve.For example, default pedal aperture threshold value can be 90%, when acceleration is stepped on Plate aperture is less than 90%, the economy plan of curve that the part in the second economy Shifting less than 90% is shifted gears as second Slightly part, when accelerator pedal aperture is more than or equal to 90%, will be more than or equal to 90% portion in the second dynamic property Shifting It is allocated as the dynamic property policy section of the second gearshift curve, it is the second gearshift that such two parts synthesize the second final Shifting Curve.

Thus, according to above-mentioned steps S301-S311, you can obtain the second gearshift curve map under power generation operation pattern in parallel. In one example of the present invention, the second gearshift curve map can as shown in Fig. 7, wherein, solid line is upshift curve, and dotted line is Downshift curve.By taking upshift as an example, when the aperture of accelerator pedal is k, it is w1 that 1 gear rises 2 gear correspondence speeds, and 2 gears rise 3 Gear correspondence speed is w2, and it is w3 that 3 gears rise 4 gear correspondence speeds, and 4 gears rise 5 gear correspondence speeds for w4 gears.

It is corresponding with pure engine working mode when the current operation mode of hybrid vehicle is pure engine working mode Shifting is the 3rd Shifting, and the 3rd Shifting is bent according to the fuel characteristic curve of engine and the external characteristics of engine Line is obtained.

That is, selecting the 3rd Shifting to be the 3rd gearshift curve under pure engine working mode, this 3rd gearshift is bent Line is mainly obtained according to the fuel characteristic curve of engine and the external characteristic curve of engine.

Specifically, Shifting may include economy Shifting and dynamic property Shifting, under pure engine working mode, The 3rd Shifting is obtained according to the fuel characteristic curve and engine test bench characteristic of engine to specifically include：According to the combustion of engine Oily characteristic curve obtains the most economical working region of engine, and the most economical working region according to engine and accelerator pedal Characteristic obtains the 3rd economy Shifting；The max-power-output speed point of engine is obtained according to the external characteristic curve of engine, And the characteristic of the max-power-output speed point according to engine and accelerator pedal obtains the 3rd dynamic property Shifting；It is economical by the 3rd Property Shifting and the 3rd dynamic property Shifting synthesize the 3rd Shifting.

It should be noted that obtain the 3rd economy Shifting when can be based on following principle, will engine operating point (operating point includes torque and rotating speed) is adjusted to as much as possible the optimal economic region of engine, to meet economy gearshift Demand；Following principle can be based on when the 3rd dynamic property Shifting is obtained, even if the rotating speed after gearshift can reach maximum work Rate rotating speed point, to meet dynamic property gearshift demand.

More specifically, following steps that can be according to Fig. 8 obtain the 3rd Shifting：

S401：The fuel characteristic curve of engine and the external characteristic curve of engine are obtained, respectively execution step S402 and step S407。

S402：According to the economic work region of the fuel characteristic curve acquisition engine of engine.

By taking Fig. 6 as an example, Fig. 6 is the external characteristic curve and fuel characteristic curve of the engine of a specific embodiment of the invention Schematic diagram, wherein curve b represent the external characteristic curve of engine, and other curves beyond curve b represent fuel characteristic curve. The economic work region that can be seen that this engine by fuel characteristic curve is in 1500-3500rpm.

S403：According to the economic work region of the engine for obtaining, the corresponding most Jing of each power points in multiple power points is obtained Ji working speed.

Specifically, under different pedal apertures, the power of engine is different, and then the rotating speed of engine is also different, so For each power points in multiple power points, multiple different power points can be preset according to actual conditions, and combine what is obtained Economic work region, obtains the corresponding most economical working speed of each power points, concrete such as the example of Fig. 6.

S404：Relation between accelerator pedal aperture and most economical working speed is obtained according to the characteristic of accelerator pedal.

Wherein, for each power points in multiple power points, each power points can be obtained according to the characteristic of accelerator pedal corresponding Accelerator pedal aperture, and each power points has corresponding most economical working speed, so as to can obtain accelerator pedal aperture with most Relation between economic work rotating speed.

S405：Determined according to the relation between accelerator pedal aperture and most economical working speed and obtain accelerator pedal aperture and speed Combination is corresponding closest to gear.

S406：Finally draw the relation between accelerator pedal, speed and gear to obtain the 3rd economy Shifting, perform Step S411.

Specifically, accelerator pedal aperture determines power demand, and according to power demand any one accelerator pedal aperture pair can be obtained The most economical working speed answered, and engine speed value of any one speed under multiple gears can be obtained according to fast ratio, this Sample exists any one corresponding most economical working speed of accelerator pedal aperture such as aperture Ki and any one speed such as vehicle velocity V i Engine speed value under multiple gears is compared to obtain comparative result, according to comparative result will it is corresponding with aperture Ki most The corresponding gear of immediate machine tachometer value of economic work rotating speed is corresponding closest to gear as aperture Ki and vehicle velocity V i, If for example the corresponding engine speed values of gear Di are Zi, and between the corresponding most economical working speed of aperture 1 and Zi Difference is minimum, then aperture Ki it is corresponding with vehicle velocity V i closest to gear be gear Di.The like, obtain other accelerator pedals Aperture and speed combination are corresponding closest to gear, finally draw multigroup speed, accelerator pedal aperture, the value of gear, and will Multigroup speed, accelerator pedal aperture, the value of gear are combined to obtain the 3rd economy Shifting.

S407：The max-power-output speed point of engine is obtained according to the external characteristic curve of engine.

S408：The corresponding gearshift rotating speed of each gear under multiple gears is obtained, so that the rotating speed after gearshift is remained essentially in most High-power rotating speed point.

S409：Relation between accelerator pedal aperture and gearshift rotating speed is obtained according to the characteristic of accelerator pedal.

S410：According to the relation between accelerator pedal aperture and gearshift rotating speed, accelerator pedal, speed and gear can be finally drawn Between relation obtaining the 3rd dynamic property Shifting.

S411：The 3rd final gearshift curve is obtained according to the 3rd economy Shifting and the 3rd dynamic property Shifting.

Wherein, the gearshift rotating speed in most economical working speed, step S408-S410 in step S403-S405 can refer to and send out The rotating speed of motivation.

Specifically, the 3rd economy Shifting and the 3rd dynamic property Shifting can be entered according to default pedal aperture threshold value Row synthesis, to synthesize the 3rd final gearshift curve.For example, default pedal aperture threshold value can be 90%, when acceleration is stepped on Plate aperture is less than 90%, the economy plan of curve that the part in the 3rd economy Shifting less than 90% is shifted gears as the 3rd Slightly part, when accelerator pedal aperture is more than or equal to 90%, will be more than or equal to 90% portion in the 3rd dynamic property Shifting It is allocated as the dynamic property policy section of the 3rd gearshift curve, it is the 3rd gearshift that such two parts synthesize the 3rd final Shifting Curve.

Thus, according to above-mentioned steps S401-S411, you can obtain the 3rd gearshift curve map under pure engine working mode. In one example of the present invention, the 3rd gearshift curve map can as shown in Fig. 9, wherein, solid line is upshift curve, and dotted line is Downshift curve.By taking upshift as an example, when the aperture of accelerator pedal is k, it is v1 that 1 gear rises 2 gear correspondence speeds, and 2 gears rise 3 Gear correspondence speed is v2, and it is v3 that 3 gears rise 4 gear correspondence speeds, and 4 gears rise 5 gear correspondence speeds for v4 gears.

It is corresponding with power-assisted mode of operation in parallel when the current operation mode of hybrid vehicle is power-assisted mode of operation in parallel Shifting is the 4th Shifting, and the 4th Shifting is according to the fuel characteristic curve of engine, the efficiency distribution of motor External characteristic curve after curve and motor are coupled with engine is obtained.

That is, selecting the 4th Shifting to be the 4th gearshift curve under power-assisted mode of operation in parallel, this 4th gearshift is bent After line is mainly coupled according to the fuel characteristic curve of engine, the efficiency distribution curve of motor and motor with engine External characteristic curve obtain.

Specifically, Shifting may include economy Shifting and dynamic property Shifting, under power-assisted mode of operation in parallel, The efficiency distribution curve and motor of fuel characteristic curve, motor according to engine couple with engine after external characteristics The Shifting of curve acquisition the 4th is specifically included：According to the fuel characteristic curve and the efficiency distribution curve point of motor of engine Not Huo Qu engine most economical working region and the most economical working region of motor, and according to the most economical work of engine The characteristic of the most economical working region and accelerator pedal of region and motor obtains the 4th economy Shifting；According to starting The max-power-output speed point of the curve acquisition engine after the external characteristic curve of machine and the coupling of engine test bench characteristic curve, and according to The max-power-output speed point of engine and the characteristic of accelerator pedal obtain the 4th dynamic property Shifting；By the gearshift of the 4th economy Strategy and the 4th dynamic property Shifting synthesize the 4th Shifting.

It should be noted that following principle can be based on when the 4th economy Shifting is obtained, will engine and motor Operating point (operating point include torque and rotating speed) while be adjusted to corresponding optimal economic region, changed with meeting economy Gear demand；Following principle can be based on when the 4th dynamic property Shifting is obtained, even if the rotating speed after gearshift can reach maximum Power rotating speed point, to meet dynamic property gearshift demand.

More specifically, following steps that can be according to Figure 10 obtain the 4th Shifting：

S501：Fuel characteristic curve, the efficiency distribution curve of motor and the external characteristic curve of engine of engine are obtained, Difference execution step S502 and step S507.

S502：The economic work of engine is obtained respectively according to the fuel characteristic curve of engine and the efficiency distribution curve of motor Make the economic work region of region and motor.

S503：According to the economic work region and the economic work region of motor of the engine for obtaining, multiple power points are obtained In the corresponding most economical working speed of each power points.Specifically, multiple different power points can be preset according to actual conditions, And the economic work region for having obtained is combined, the corresponding most economical working speed of each power points is obtained, concrete such as Fig. 3 or figure 6 example.

S504：Relation between accelerator pedal aperture and most economical working speed is obtained according to the characteristic of accelerator pedal.

S505：Determined according to the relation between accelerator pedal aperture and most economical working speed and obtain accelerator pedal aperture and speed Combine corresponding immediate gear.

S506：Finally draw the relation between accelerator pedal, speed and gear to obtain the 4th economy Shifting, perform Step S511.

Specifically, accelerator pedal aperture determines power demand, and according to power demand any one accelerator pedal aperture pair can be obtained The most economical working speed answered, and according to fast ratio can obtain engine speed value of any one speed under multiple gears (or Motor speed value), so by any one corresponding most economical working speed of accelerator pedal aperture such as aperture Ki and any one Engine speed value (or motor speed value) of speed such as vehicle velocity V i under multiple gears is compared and compares knot to obtain Really, will corresponding with aperture Ki immediate machine tachometer value of most economical working speed (or motor speed according to comparative result Value) corresponding gear is corresponding closest to gear as aperture Ki and vehicle velocity V i, if for example gear Di is corresponding started Machine tachometer value (or motor speed value) is Zi, and the difference between the corresponding most economical working speed of aperture 1 and Zi is minimum, Then aperture Ki it is corresponding with vehicle velocity V i closest to gear be gear Di.The like, obtain other accelerator pedal apertures and speed Combination is corresponding closest to gear, finally draws multigroup speed, accelerator pedal aperture, the value of gear, and by multigroup speed, Accelerator pedal aperture, the value of gear are combined to obtain the 4th economy Shifting.

S507：Curve acquisition max-power-output speed after being coupled according to the external characteristic curve and motor external characteristic curve of engine Point.S508：The corresponding gearshift rotating speed of each gear under multiple gears is obtained, so that the rotating speed after gearshift is remained essentially in most High-power rotating speed point.

Wherein, different gears have and do not compare at the same speed, thus can be changed with the most strong gearshift rotating speed of dynamic property under each gear Gear, so that the rotating speed after the completion of gearshift remains essentially in max-power-output speed point.

S509：Relation between accelerator pedal aperture and gearshift rotating speed is obtained according to the characteristic of accelerator pedal.

S510：According to the relation between accelerator pedal aperture and gearshift rotating speed, accelerator pedal, speed and gear can be finally drawn Between relation obtaining the 4th dynamic property Shifting.

S511：The 4th final gearshift curve is obtained according to the 4th economy Shifting and the 4th dynamic property Shifting.

, wherein it is desired to explanation, because engine speed is identical with motor speed, is previously mentioned in step S501-S511 Rotating speed both can be motor speed, or engine speed.

Specifically, the 4th economy Shifting and the 4th dynamic property Shifting can be entered according to default pedal aperture threshold value Row synthesis, to synthesize the 4th final gearshift curve.For example, default pedal aperture threshold value can be 90%, when acceleration is stepped on Plate aperture is less than 90%, the economy plan of curve that the part in the 4th economy Shifting less than 90% is shifted gears as the 4th Slightly part, when accelerator pedal aperture is more than or equal to 90%, will be more than or equal to 90% portion in the 4th dynamic property Shifting It is allocated as the dynamic property policy section of the 4th gearshift curve, it is the 4th gearshift that such two parts synthesize the 4th final Shifting Curve.

Thus, according to above-mentioned steps S501-S511, you can obtain the 4th gearshift curve map under power-assisted mode of operation in parallel. In one example of the present invention, the 4th gearshift curve map can as shown in Figure 11, wherein, solid line is upshift curve, and dotted line is Downshift curve.By taking upshift as an example, when the aperture of accelerator pedal is k, it is s1 that 1 gear rises 2 gear correspondence speeds, and 2 gears rise 3 Gear correspondence speed is s2, and it is s3 that 3 gears rise 4 gear correspondence speeds, and 4 gears rise 5 gear correspondence speeds for s4 gears.

Specifically, the shift control method for hybrid vehicle of the embodiment of the present invention specifically include shown in Figure 12 with Lower step：

S101：Entire car controller HCU judges the current operation mode of hybrid vehicle.

S102：Current operation mode is sent to transmission control unit TCU by entire car controller HCU.

S103：Transmission control unit TCU obtains Shifting corresponding with current operation mode according to current operation mode.

S104：The first Shifting is selected when current operation mode is pure electrician's operation mode；When current operation mode is parallel connection The second Shifting is selected during power generation operation pattern；The 3rd is selected to shift gears when current operation mode is pure engine working mode Strategy；The 4th Shifting is selected when current operation mode is power-assisted mode of operation in parallel.

Thus, the shift control method for hybrid vehicle of the embodiment of the present invention is adapted under different working modes Gear demand, i.e., select different Shiftings under different working modes, and then can be issued to most in different working modes Good power performance and economic performance.

In sum, the shift control method for hybrid vehicle for proposing according to embodiments of the present invention, according to current work Operation mode obtains Shifting corresponding with current operation mode, and according to the gearshift plan corresponding with current operation mode for obtaining Slightly control hybrid vehicle to be shifted gears.Thus, the method for the embodiment of the present invention adopts difference under different mode of operations Shifting, to adapt to different working modes under different demands to gear, and then make car load in each of these modes of operation all More preferable power performance and economic performance can be reached, the cornering ability of car load is lifted.

Another aspect of the present invention embodiment proposes a kind of shifting control system for hybrid vehicle.

Figure 13 is the block diagram of the shifting control system for hybrid vehicle according to embodiments of the present invention.Such as Figure 13 Shown, the shifting control system includes：Entire car controller 201 and transmission control unit 202.

Wherein, entire car controller 201 is used to determine hybrid power vapour according to the driving cycle and whole vehicle state of hybrid vehicle The current operation mode of car, and hybrid vehicle is controlled with current operation mode operation；Transmission control unit 202 is used for CAN communication is carried out with entire car controller 201, and speed changer 104 is controlled, transmission control unit 202 is additionally operable to The current operation mode of hybrid vehicle is obtained, and gearshift corresponding with current operation mode is obtained according to current operation mode Strategy, and shifted gears according to Shifting corresponding with the current operation mode control hybrid vehicle for obtaining, wherein, Hybrid vehicle includes multiple-working mode, and the every kind of mode of operation in multiple-working mode has corresponding Shifting.

Various Shiftings it should be noted that transmission control unit 202 can prestore, various Shiftings and various works Operation mode, Shifting is also different under different working modes.

Specifically, entire car controller 201 can determine current work according to the driving cycle of hybrid vehicle and whole vehicle state Operation mode, then entire car controller HCU current operation mode can be issued transmission control unit by CAN 202 so that transmission control unit 202 gets current operation mode.

Transmission control unit 202 is received after the current operation mode of the transmission of entire car controller 201, can be according to current work Operation mode simultaneously obtains corresponding Shifting and shifts gears curve from various Shiftings for prestoring.Transmission control unit 202 exists Obtain by Shifting is shifted gears after curve carries out gearshift control according to the gearshift curve, specifically, transmission control list Unit 202 can obtain the current vehicle speed and current accelerator pedal aperture of hybrid vehicle, then add according to current vehicle speed and currently Speed pedal aperture is compared to obtain comparison result in corresponding gearshift curve, and controls hybrid power according to comparison result The gear gear of automobile, the gear that for example can control hybrid vehicle according to comparison result is upgraded to 2 gears or by 2 by 1 gear Gear is reduced to 1 gear or keeps gear constant.

Thus, the system of the embodiment of the present invention adopts different Shiftings under different mode of operations, to adapt to different works To the different demands of gear under operation mode, and then car load is set to be attained by more preferable power performance and Jing in each of these modes of operation Ji performance, lifts the cornering ability of car load.

Thus, it is possible to the gear demand under adapting to different working modes, i.e., select different gearshift plans under different working modes Slightly, and then optimal power performance and economic performance can be issued in different working modes.

In sum, the shifting control system for hybrid vehicle for proposing according to embodiments of the present invention, transmission control Unit obtains corresponding with current operation mode Shifting according to current operation mode, and according to acquisition and work at present mould The corresponding Shifting control hybrid vehicle of formula is shifted gears.Thus, the system of the embodiment of the present invention is in different work Different Shiftings is adopted under pattern, to adapt to different working modes under different demands to gear, and then make car load every Plant and more preferable power performance and economic performance are attained by under mode of operation, lift the cornering ability of car load.

The present invention has one side embodiment to propose a kind of hybrid vehicle, and the hybrid vehicle includes above-described embodiment For the shifting control system of hybrid vehicle.

In describing the invention, it is to be understood that term " " center ", " longitudinal direction ", " horizontal ", " length ", " width ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", The orientation or position relationship of the instruction such as " clockwise ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " is based on shown in the drawings Orientation or position relationship, be for only for ease of description the present invention and simplify description, rather than indicate or imply indication device or Element with specific orientation, with specific azimuth configuration and operation, therefore must be not considered as limiting the invention.

Additionally, term " first ", " second " be only used for describe purpose, and it is not intended that indicate or imply relative importance or The implicit quantity for indicating indicated technical characteristic.Thus, " first " is defined, the feature of " second " can be expressed or hidden Include at least one this feature containing ground.In describing the invention, " multiple " are meant that at least two, such as two, three It is individual etc., unless otherwise expressly limited specifically.

In the present invention, unless otherwise clearly defined and limited, the art such as term " installation ", " connected ", " connection ", " fixation " Language should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or it is integral；Can be machinery Connection, or electrical connection；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two units The interaction relationship of connection or two elements inside part, unless otherwise clearly restriction.For the ordinary skill of this area For personnel, above-mentioned term concrete meaning in the present invention can be as the case may be understood.

In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be First and second feature directly contacts, or the first and second features are by intermediary mediate contact.And, first is special Levy second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only Only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " Can be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height less than second Feature.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specific example ", Or the description of " some examples " etc. means to combine specific features, structure, material or feature bag that the embodiment or example are described In being contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term necessarily It is directed to identical embodiment or example.And, the specific features of description, structure, material or feature can be arbitrary Combine in an appropriate manner in individual or multiple embodiments or example.Additionally, in the case of not conflicting, the skill of this area Art personnel can be combined the feature of the different embodiments or example described in this specification and different embodiments or example And combination.

Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment be it is exemplary, It is not considered as limiting the invention, one of ordinary skill in the art within the scope of the invention can be to above-described embodiment It is changed, changes, replacing and modification.

Claims

1. a kind of shift control method for hybrid vehicle, it is characterised in that comprise the following steps：

Obtain the current operation mode of hybrid vehicle；

Shifting corresponding with the current operation mode is obtained according to the current operation mode, wherein, the mixing is dynamic Power automobile includes multiple-working mode, and the every kind of mode of operation in the multiple-working mode has corresponding Shifting；

The hybrid vehicle is controlled according to the Shifting corresponding with the current operation mode for obtaining to be shifted gears.

2. the shift control method for hybrid vehicle according to claim 1, it is characterised in that described various Mode of operation includes pure electrician's operation mode, pure engine working mode, power generation operation pattern in parallel and power-assisted mode of operation in parallel.

3. the shift control method for hybrid vehicle according to claim 2, it is characterised in that

When the current operation mode of the hybrid vehicle is pure electrician's operation mode, with pure electrician's operation mode pair The Shifting answered be the first Shifting, efficiency distribution curve and motor of first Shifting according to motor External characteristic curve obtain；

When the current operation mode of the hybrid vehicle is the power generation operation pattern in parallel, with the generating work in parallel The corresponding Shifting of operation mode is the second Shifting, second Shifting according to the fuel characteristic curve of engine, The efficiency distribution curve acquisition of engine test bench characteristic and motor；

When the current operation mode of the hybrid vehicle is the pure engine working mode, with the pure engine work The corresponding Shifting of operation mode is the 3rd Shifting, the 3rd Shifting according to the fuel characteristic curve of engine and The external characteristic curve of engine is obtained；

When the current operation mode of the hybrid vehicle is the power-assisted mode of operation in parallel, with the power-assisted work in parallel The corresponding Shifting of operation mode is the 4th Shifting, the 4th Shifting according to the fuel characteristic curve of engine, External characteristic curve after the efficiency distribution curve of motor and motor are coupled with engine is obtained.

4. the shift control method for hybrid vehicle according to claim 2, it is characterised in that the mixing Power vehicle includes motor, engine, clutch and speed changer, wherein,

When the current operation mode of the hybrid vehicle is pure electrician's operation mode, the clutch separation is described Motor drives the hybrid electric vehicle to sail by the speed changer, and the engine does not work；

When the current operation mode of the hybrid vehicle is the power generation operation pattern in parallel, the clutch is combined, Hybrid electric vehicle described in the engine driving is sailed, while motor described in the driven by engine generates electricity；

When the current operation mode of the hybrid vehicle is the pure engine working mode, the clutch is combined, Hybrid electric vehicle described in the engine driving is sailed, and the motor does not work；

When the current operation mode of the hybrid vehicle is the power-assisted mode of operation in parallel, the clutch is combined, The engine and the motor drive the hybrid electric vehicle to sail simultaneously.

5. a kind of shifting control system for hybrid vehicle, it is characterised in that include：

Entire car controller, for the driving cycle and whole vehicle state according to hybrid vehicle the hybrid vehicle is determined Current operation mode, and control the hybrid vehicle and run with the current operation mode；

Transmission control unit, for obtaining the current operation mode of hybrid vehicle, and according to the current operation mode Shifting corresponding with the current operation mode is obtained, and is changed according to the corresponding with the current operation mode of acquisition Hybrid vehicle described in gear policy control is shifted gears, wherein, the hybrid vehicle includes multiple-working mode, institute The every kind of mode of operation stated in multiple-working mode has corresponding Shifting.

6. the shifting control system for hybrid vehicle according to claim 5, it is characterised in that described various Mode of operation includes pure electrician's operation mode, pure engine working mode, power generation operation pattern in parallel and power-assisted mode of operation in parallel.

7. the shifting control system for hybrid vehicle according to claim 6, it is characterised in that

8. the shifting control system for hybrid vehicle according to claim 6, it is characterised in that the mixing Power vehicle includes motor, engine, clutch and speed changer, wherein,

9. a kind of hybrid vehicle, it is characterised in that include according to any one of claim 5-8 for mixing The shifting control system of power vehicle.