CN105522908B

CN105522908B - Hybrid power/electric car and its control method and power drive system

Info

Publication number: CN105522908B
Application number: CN201410526451.9A
Authority: CN
Inventors: 廉玉波; 阮鸥; 陈昊; 程华; 黄鹏; 王品
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2014-09-30
Filing date: 2014-09-30
Publication date: 2019-01-29
Anticipated expiration: 2034-09-30
Also published as: CN105522908A

Abstract

The invention discloses a kind of control methods of hybrid vehicle, comprising the following steps: detects the operating condition of hybrid vehicle and/or the working condition of power battery；Corresponding operating mode is switched to according to the instruction of the pattern switching of user and the operating condition of hybrid vehicle and/or the working state control hybrid vehicle of power battery, wherein, operating mode includes electric-only mode and hybrid mode, and when hybrid vehicle is in electric-only mode or hybrid mode, controllable first motor generator and the second motor generator carry out torque distribution simultaneously.The control method passes through while controlling the first motor generator and the second motor generator output torque, can carry out reasonable distribution to the output of engine and motor generator, keep hybrid vehicle with good performance.The invention discloses a kind of power drive system of hybrid vehicle, a kind of hybrid vehicle and a kind of power drive systems of electric car.

Description

Hybrid power/electric car and its control method and power drive system

Technical field

The present invention relates to automobile technical field, in particular to a kind of control method of hybrid vehicle, a kind of mixing are dynamic The power drive system of power automobile, a kind of hybrid vehicle and a kind of power drive system of electric car.

Background technique

Hybrid vehicle refers to the automobile using series model and the comprehensive driving of paralleling model.Wherein, in series model Under, the power drive electrical power generators exported by engine, the electrical energy transportation that generator issues is to motor to drive wheel Or power battery is to be stored；Under paralleling model, power a part of engine output drives wheel by machine driving, Then driven generator generates electricity another part, and the electrical energy transportation that generator issues drives wheel or battery to be stored up to motor It deposits.

Relevant hybrid vehicle generally drives drive mode using series connection two or drive mode, still, phase are driven in parallel connection two Pass technology not can avoid the disadvantage of its single drive mode, for example, when automobile is to run at high speed, starting under series model Machine works in preferable economic zone, but the energy transmission link of this mode is more, and automobile overall efficiency is lower；In paralleling model Under, when automobile is at low speed, since the remaining capacity by power battery is influenced, engine assists motor drive vehicle Wheel, so, the efficiency of engine operation region is lower, and oil consumption and discharge are all higher.Also, the dynamic property of two drive drive modes, Passability and steering property are all poor.In addition, from the viewpoint of economy, the operating mode that single drive mode is constituted is less, The traffic coverage of engine and motor, which is adjusted, to be limited, and not can guarantee engine and motor is constantly in economic zone work； When automobile brake, due to the limitation of motor power (output), the ratio to recover energy is also smaller.

Summary of the invention

The present invention is directed to solve at least some of the technical problems in related technologies.

For this purpose, the first purpose of this invention is to propose a kind of control method of hybrid vehicle, the control method Hybrid vehicle can be controlled and run on multiple-working mode, moreover it is possible on the basis of guaranteeing hybrid electric vehicle power, Engine and motor is set all to work in preferable economic zone.

Second object of the present invention is to propose a kind of power drive system of hybrid vehicle.Third of the invention A purpose is to propose a kind of hybrid vehicle.Fourth object of the present invention is to propose that a kind of power of electric car passes Dynamic system.

The control method for the hybrid vehicle that embodiment proposes according to a first aspect of the present invention, the hybrid vehicle Power drive system include engine, multiple input shafts, multiple output shafts, motor power axis, for drive pair of wheels The first motor generator and the second motor generator for driving second pair of wheel, wherein the engine is arranged to can It is selectively engaged at least one of the multiple input shaft, is provided with gear driving gear on each input shaft, often Gear driven gear is provided on a output shaft, the gear driven gear is accordingly nibbled with the gear driving gear It closes, the motor power axis is arranged to link with one in the input shaft, and first motor generator is arranged to Enough to link with the motor power axis, the control method is the following steps are included: detect the operation work of the hybrid vehicle The working condition of condition and/or the power battery；According to the instruction of the pattern switching of user and the fortune of the hybrid vehicle Hybrid vehicle described in the working state control of row operating condition and/or the power battery switches to corresponding operating mode, In, the operating mode includes electric-only mode and hybrid mode, and when the hybrid vehicle is in described pure When electric model or the hybrid mode, it can control first motor generator and second motor generator same The distribution of Shi Jinhang torque.

The control method of the hybrid vehicle proposed according to embodiments of the present invention, in the operation of detection hybrid vehicle After operating condition and/or the working condition of power battery, according to the instruction of the pattern switching of user and the operation work of hybrid vehicle The working state control hybrid vehicle of condition and/or power battery switches to corresponding operating mode, and works as hybrid power When automobile is in electric-only mode or hybrid mode, the first motor generator and the second motor generator can control simultaneously Carry out torque distribution.The control method passes through while controlling the first motor generator as a result, and the output of the second motor generator is turned round Square can carry out reasonable distribution to the output of engine and motor generator, hybrid vehicle is made to have good passability, warp Ji property, steering property, handling and cross-country ability, promote the experience of user.Also, the control method is according to the fortune of hybrid vehicle Row operating condition and/or the working condition of power battery determine operating mode, to give full play to the excellent of series model and paralleling model Point makes engine and motor generator all work in preferable economic zone on the basis of guaranteeing hybrid electric vehicle power Domain reaches the control target of discharge and oil consumption.

Second aspect of the present invention embodiment proposes a kind of power drive system of hybrid vehicle, comprising: engine； Multiple input shafts, the engine are arranged to be selectively engageable at least one of the multiple input shaft, each described Gear driving gear is provided on input shaft；Multiple output shafts are provided with gear driven gear on each output shaft, described Gear driven gear is accordingly engaged with the gear driving gear；Motor power axis, the motor power axis is arranged to can be with A linkage in the input shaft；For driving the first motor generator of pair of wheels, first motor generator It is arranged to link with the motor power axis；For driving second motor generator of second pair of wheel；Detection module is used In the working condition for the operating condition and/or the power battery for detecting the hybrid vehicle；Control module is used for basis The pattern switching of user instructs and the working condition control of the operating condition and/or the power battery of the hybrid vehicle It makes the hybrid vehicle and switches to corresponding operating mode, wherein the operating mode includes electric-only mode and mixing Dynamic mode, and when the hybrid vehicle is in the electric-only mode or the hybrid mode, it is described Control module can control first motor generator and second motor generator while carry out torque distribution.

The power drive system of the hybrid vehicle proposed according to embodiments of the present invention is detected by detection module and is mixed The operating condition of power vehicle and/or the working condition of power battery, control module according to the pattern switching of user instruct and The operating condition of hybrid vehicle and/or the working state control hybrid vehicle of power battery switch to corresponding work Mode, and when hybrid vehicle is in electric-only mode or hybrid mode, it can control the first motor generator Torque distribution is carried out simultaneously with the second motor generator.The power drive system controls first by control module simultaneously as a result, Motor generator and the second motor generator output torque can carry out reasonable distribution to the output of engine and motor generator, Make hybrid vehicle that there is good passability, economy, steering property, handling and cross-country ability, promotes the experience of user.And And the power drive system determines Working mould according to the operating condition of hybrid vehicle and/or the working condition of power battery Formula, so that the advantages of giving full play to series model and paralleling model makes to send out on the basis of guaranteeing hybrid electric vehicle power Motivation and motor generator all work in preferable economic zone, reach the control target of discharge and oil consumption.

The hybrid vehicle that embodiment proposes according to a third aspect of the present invention, it is dynamic including the hybrid vehicle Power transmission system.

The hybrid vehicle proposed according to embodiments of the present invention, by controlling the first motor generator and the second electricity simultaneously Dynamic generator output torque can carry out reasonable distribution to the output of engine and motor generator, have hybrid vehicle Good passability, economy, steering property, handling and cross-country ability, promote the experience of user.Also, according to hybrid power vapour The operating condition of vehicle and/or the working condition of power battery determine operating mode, to give full play to series model and and gang mould The advantages of formula, makes engine and motor generator all work preferable on the basis of guaranteeing hybrid electric vehicle power Economic zone reaches the control target of discharge and oil consumption.

The power drive system for the electric car that the fourth aspect of the present invention embodiment proposes, comprising: motor power axis, more A output shaft and motor power axis synchronizer；For driving the first motor generator of pair of wheels, the motor power axis It is arranged to link with one in the multiple output shaft, one in the motor power axis and the multiple output shaft It is a when being linked, first motor generator can by the power of generation by an output of the multiple output shaft, The motor power axis synchronizer is arranged on the motor power axis, and the motor power axis is arranged to can be by the motor The synchronization of line shaft synchronizer and selectively with one in the multiple output shaft linkage；For driving second pair of wheel Second motor generator；Control module, the control module control first motor generator and second dynamoelectric and power generation Machine carries out torque distribution simultaneously.

The power drive system of the electric car proposed according to embodiments of the present invention, it is electronic by control module control first Generator and the second motor generator carry out torque distribution simultaneously.The power drive system can be to the first motor generator as a result, Output with the second motor generator carries out reasonable distribution, and hybrid vehicle is made to have good passability, economy, steering Property, handling and cross-country ability, promote the experience of user.

Detailed description of the invention

Fig. 1 is the schematic diagram of speed changer according to an embodiment of the present invention；

Fig. 2 is the schematic diagram of power drive system according to an embodiment of the invention；

Fig. 3 is the schematic diagram of power drive system in accordance with another embodiment of the present invention；

Fig. 4 is the schematic diagram of the power drive system of further embodiment according to the present invention；

Fig. 5 is energy of the power drive system of hybrid vehicle according to an embodiment of the invention under series model Measure transfer route figure；

Fig. 6 is energy of the power drive system of hybrid vehicle according to an embodiment of the invention under paralleling model Measure transfer route figure；

Fig. 7 is energy of the power drive system of hybrid vehicle according to an embodiment of the invention under mixed connection mode Measure transfer route figure；

Fig. 8 is the flow chart of the control method of hybrid vehicle according to an embodiment of the present invention；

Fig. 9 is the flow chart of the control method of hybrid vehicle according to an embodiment of the invention；

Figure 10 is the flow chart of the control method of hybrid vehicle in accordance with another embodiment of the present invention；

Figure 11 is motor generator in the control method of the hybrid vehicle of a specific embodiment according to the present invention Torque and revolving speed between relation curve schematic diagram；

Figure 12 is that accelerator pedal is opened in the control method of the hybrid vehicle of a specific embodiment according to the present invention Relation curve schematic diagram between degree and the demand torque at wheel end；

Figure 13 is electric-only mode in the control method of the hybrid vehicle of a specific embodiment according to the present invention Relation curve schematic diagram between lower accelerator pedal aperture and shift speed；

Figure 14 is the flow chart of the control method of the hybrid vehicle of another embodiment according to the present invention；

Figure 15 is the flow chart of the control method of the hybrid vehicle of further embodiment according to the present invention；

Figure 16 is the process of power generation in parking in the control method of the hybrid vehicle of further embodiment according to the present invention Figure；

Figure 17 is the flow chart of the control method of hybrid vehicle accord to a specific embodiment of that present invention；

Figure 18 is engine torque in the control method of the hybrid vehicle of a specific embodiment according to the present invention Relation curve schematic diagram between engine speed；

Figure 19 is the flow chart of the control method of the hybrid vehicle of another specific embodiment according to the present invention；

Figure 20 is hybrid power mould in the control method of the hybrid vehicle of a specific embodiment according to the present invention The relation curve schematic diagram of SOC deviation and engine power generation power under formula；

Figure 21 is the flow chart of the control method of the hybrid vehicle of another specific embodiment according to the present invention；And

Figure 22 is that signal interaction is illustrated in the control method of hybrid vehicle accord to a specific embodiment of that present invention Figure.

Specific embodiment

The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.

Combine Fig. 1-Fig. 4 that power drive system 100 according to an embodiment of the present invention is described in detail first, the power Transmission system 100 is suitable for the vehicle of such as hybrid vehicle, and the dynamical system as vehicle, is normal vehicle operation Sufficient power and electric energy are provided.

Power drive system 100 according to an embodiment of the present invention mainly includes two large divisions, and one can be power source, power Source can be engine 4, motor generator etc., secondly can be speed changer (as shown in Figure 1), speed changer is for realizing to power source The speed changing function of output power meets vehicle driving requirement or charging requirement etc..

For example, in some embodiments, as shown in figs 2-4, power drive system 100 may include engine 4, first Motor generator 51 and speed changer, but not limited to this.

It is directly defeated after utilizing liquid fuel (for example, gasoline, diesel oil etc.) and air to mix for engine 4 more Enter combustion chamber burning and generate energy, is then transformed into mechanical energy again.Engine 4 generally may include body group, crank Link mechanism, feed system, ignition system, cooling system and lubricating system etc..Body group is each mechanism of engine 4, system Body is assembled, the straight reciprocating motion of piston can be changed into the rotary motion of crankshaft and exportable power by crank link mechanism. For timing air inlet, exhaust, what guarantee engine 4 respectively recycled goes on smoothly valve actuating mechanism.Feed system can be by gas mixture For burning in supply cylinder.Cooling system guarantees that the operating temperature of engine 4 is in suitable temperature for cooling down engine 4 It spends in section.Lubricating system is used to lubricate each kinematic pair in engine 4, reduces abrasion and energy loss.

It should be understood that above-mentioned about engine 4 and its subsystems, the specific configuration of clamp mechanism, working principle Deng being the prior art, and be it is well known to those of ordinary skill in the art, here for purposes of brevity, no longer one by one in detail Description.

As shown in connection with fig. 1, in some embodiments, speed changer mainly includes multiple input shafts (for example, the first input shaft 11, the second input shaft 12), multiple output shafts (for example, first output shaft 21, the second output shaft 22) and motor power axis 3 and each Associated gear and shifting element (e.g., synchronizer) on axis.

When carrying out power transmitting between engine 4 and input shaft, engine 4 is arranged to be selectively engageable multiple defeated Enter at least one of axis.In other words, for example, engine 4 can be selectively when engine 4 transmits power to input shaft Engaging with one in multiple input shafts can also be selectively and in multiple input shaft to transmit power or engine 4 Two or more input shafts are simultaneously engaged with to transmit power.

For example, multiple input shafts may include 12 liang of the first input shaft 11 and the second input shaft in the example of Fig. 1-Fig. 4 Root input shaft, engine 4 can be engaged selectively with one of the first input shaft 11 and the second input shaft 12 to transmit power.Or Person, particularly, engine 4 can also simultaneously engage with the first input shaft 11 and the second input shaft 12 to transmit power.Certainly, should Understand, engine 4 can also be disconnected with the first input shaft 11 and the second input shaft 12 simultaneously.

For the ordinary skill in the art, the engagement state and power drive system of engine 4 and input shaft 100 specific operating condition is related, this will be described in detail in conjunction with specific embodiments below, is no longer described in detail here.

It can be driven by shift gear pair between input shaft and output shaft.For example, being respectively provided on each input shaft There is gear driving gear, gear driven gear, gear driven gear and gear driving gear pair are provided on each output shaft It engages with answering, to constitute the different gear pair of multipair speed ratio.

In some embodiments of the invention, speed changer can be five advance shift transmissions, that is, have first gear pair, two Keep off gear pair, three gear gear pairs, four gear gear pairs and five gear gear pairs.But the present invention is not limited thereto, for this field For those of ordinary skill, it can be needed according to transmission and adaptability increases or decreases the number of shift gear pair, however it is not limited to Five gear transmission shown in the embodiment of the present invention.

As Figure 1-Figure 4, be arranged to can be with one (for example, second input shaft 12) in input shaft for motor power axis 3 It links.In other words, the power from the input shaft need to motor power axis 3 transmit when, motor power axis 3 then with this Input shaft linkage is to transmit power, or the power from the motor power axis 3 is when needing to transmit to the input shaft, the input Axis then links with motor power axis 3 to transmit power.

In short, (the tool when the vehicle with power drive system 100 according to an embodiment of the present invention is in certain operating conditions Body operating condition will be described in detail in conjunction with specific embodiments below), and power needs between motor power axis 3 and the input shaft When being transmitted, then the input shaft links with motor power axis 3.

It should be noted that above-mentioned " linkage " can be understood as multiple components (for example, two) coupled movements, with two For component linkage, wherein when a component movement, another component also moves therewith.

For example, in some embodiments of the invention, gear and axis linkage can be understood as when gear rotates and it The axis of linkage also will rotation, or in axis rotation, the gear that links with it will also rotate.

For another example, axis and axis linkage can be understood as when wherein axis rotates, another axis linking with it also general Rotation.

For another example, gear and gear-linked can be understood as when wherein a gear rotates, link with it another Gear also will rotation.

Below the present invention in the description in relation to " linkage ", if be understood in this way without specified otherwise.

Similarly, the first motor generator 51 is arranged to link with motor power axis 3.For example, the first dynamoelectric and power generation Machine 51, can be by the power output of generation to motor power axis 3 when as electric motor operation.For another example, in the first motor generator 51 as generators when working, and the power from motor power axis 3 can be exported to the first motor generator 51, thus driving the One motor generator 51 generates electricity.

Here, it needs to illustrate a bit, in the description of the invention in relation to " motor generator ", if without specified otherwise, The motor generator can be understood as the motor with generator and motor function.

As described above, motor power axis 3 can link with one in input shaft, particularly, in motor power axis 3 When being linked with one in the input shaft, the first motor generator 51 can be utilized from at least portion that engine 4 exports Sub-power generates electricity in vehicle driving and parking.

In other words, when vehicle is in driving status and motor power axis 3 is linked with one in the input shaft, hair At least partly power of motivation 4 can be exported by motor power axis 3 to the first motor generator 51, so that driving first is electronic Generator 51 generates electricity, and realizes that engine 4 charges operating condition in driving.And vehicle be in parking (vehicle stop but start Machine 4 is still in working condition) one in state and motor power axis 3 and the input shaft when being linked, engine 4 is at least Partial power can be exported by motor power axis 3 to the first motor generator 51, thus the first motor generator 51 of driving into Row power generation, is realized parking charge function (i.e. " STOP " charging).

Further, motor power axis 3 is also configured to link with one (for example, second output shaft 22) in output shaft. For example, the power from motor power axis 3 is when needing to transmit to the output shaft, motor power axis 3 then links with the output shaft To transmit power.Particularly, when one in motor power axis 3 and output shaft is linked, the first motor generator 51 can pass through the power of generation one output of output shaft, to drive vehicle driving.In short, in motor power When axis 3 and the output shaft link, the first motor generator 51 is to can be used as motor and output power to drive vehicle driving 's.

Need to illustrate that a little in the description of the present invention, motor power axis 3 can be the first motor generator 51 itself Motor shaft.It is, of course, understood that the motor shaft of motor power axis 3 and the first motor generator 51 is also possible to two lists Only axis.

Power drive system 100 according to an embodiment of the present invention as a result, can be realized in vehicle driving and parking and be filled Electricity Functional, enriches charge mode, solve at least to a certain extent existing power drive system charging modes it is single, charging The problems such as low efficiency.In short, power drive system 100 according to an embodiment of the present invention can be realized driving charging and parking is filled Electric two class charge modes.

The specific configuration of speed changer is retouched in detail in conjunction with specific embodiments referring to Fig. 1 and in conjunction with Fig. 2-Fig. 4 It states.

First to motor power axis synchronizer 33c, motor power axis first gear 31 and the motor on motor power axis 3 Power axis second gear 32 is described in detail.

Specifically, motor power axis first gear 31 and the equal sky of motor power axis second gear 32 are set on motor On power axis 3, that is to say, that motor power axis 3 and motor power axis first gear 31 can differential rotate, similarly, motor Power axis 3 and motor power axis second gear 32 also being capable of differential rotations.

Such as Fig. 1 and in combination with Fig. 2-Fig. 4, motor power axis first gear 31 is arranged to one progress with input shaft Linkage, motor power axis second gear 32 are arranged to link with the one of output shaft.In some examples of Fig. 1-Fig. 4 In, motor power axis first gear 31 is linked with the second input shaft 12, motor power axis second gear 32 be with it is second defeated What shaft 22 linked, but the present invention is not limited thereto.

Further, motor power axis synchronizer 33c is arranged in motor power axis first gear 31 and motor power axis second Between gear 32, the clutch collar of motor power axis synchronizer 33c can be along the axial movement of motor power axis 3, such as in Fig. 1-Fig. 4 Example in, the clutch collar of motor power axis synchronizer 33c can be under the driving of shifting fork mechanism along the axial direction of motor power axis 3 Movement to the left or to the right.

Motor power axis synchronizer 33c is due to being arranged in motor power axis first gear 31 and motor power axis second gear Between 32, therefore motor power axis synchronizer 33c can be selectively by motor power axis first gear 31 and motor power axis One of second gear 32 is engaged with motor power axis 3.

In conjunction with the example of Fig. 1-Fig. 4, the clutch collar of motor power axis synchronizer 33c is moved downward along axial direction can be by motor Line shaft first gear 31 is engaged with motor power axis 3, so that motor power axis 3 and 31 energy of motor power axis first gear It is enough to rotate synchronously.The clutch collar of motor power axis synchronizer 33c is moved right along axial direction can be by motor power axis second gear 32 engage with motor power axis 3, so that motor power axis 3 can be rotated synchronously with motor power axis second gear 32.

It is, of course, understood that the clutch collar of motor power axis synchronizer 33c also may remain in neutral position (example Such as, initial position), motor power axis synchronizer 33c and motor power axis first gear 31 and motor power axis second at this time Gear 32 is each turned off.

Furthermore, it is necessary to illustrate a bit, for the ease of motor power axis first gear 31, motor power axis second gear 32 with Motor power axis synchronizer 33c is engaged, the court of motor power axis first gear 31 and motor power axis second gear 32 Engagement gear ring can be set to the side of motor power axis synchronizer 33c, this for the ordinary skill in the art, It should all will be appreciated that.

Motor power axis 3 can be by the synchronization of motor power axis synchronizer 33c (i.e. to the first tooth of motor power axis as a result, Wheel 31 or motor power axis second gear 32 synchronization) and selectively with one linkage of input shaft or and output shaft One linkage.Specifically, motor power axis synchronizer 33c can synchronize motor power axis first gear 31, That is the engageable motor power axis first gear 31 of motor power axis synchronizer 33c and motor power axis 3, thus motor power axis 3 It can link with one (for example, second input shaft 12) in input shaft.For another example, in some instances, motor Power axis synchronizer 33c can synchronize motor power axis second gear 32, i.e. the engageable motor of motor power axis synchronizer 33c Line shaft second gear 32 and motor power axis 3, thus motor power axis 3 can with it is one (for example, the in output shaft Two output shafts 22) it links.

The structure of reversing gear of power drive system 100 according to an embodiment of the present invention is retouched in detail with reference to the accompanying drawing It states.

As described above, motor power axis first gear 31 links with the one of input shaft.And show in the present invention In some embodiments out, motor power axis first gear 31 be with input shaft it is one on driving gear direct-drive Or indirect drive, to realize the purpose with input shaft linkage.Such as in the example of Fig. 1-Fig. 4, motor power axis One gear 31 passes through 73 indirect drive of intermediate idler with corresponding driving gear such as two gear driving gear 2a, in other words, Intermediate idler 73 is engaged with corresponding driving gear and motor power axis first gear 31 respectively.

Further, on motor power axis 3, reverse idler gear 72 engages 71 empty set of reverse gear with reverse gear 71, Reverse idler gear 72 is arranged to optionally link with intermediate idler 73.In conjunction with the embodiment of Fig. 1-Fig. 4, center tooth of reversing gear 72 skies are taken turns to be set on the second output shaft 22, with intermediate idler 73 can differential rotation and when needed be engageable to it is synchronous Rotation.

Further, intermediate idler 73 and reverse idler gear 72 be by the synchronous effect of reverse gear synchronizer 74c into Row linkage, that is to say, that reverse gear synchronizer 74c is arranged for synchronous reverse idler gear 72 and intermediate idler 73.

Input shaft, output shaft and various gears gear are described in detail below with reference to the embodiment of Fig. 1-Fig. 4.

In some embodiments of the present invention, as Figure 1-Figure 4, input shaft can be two, i.e. input shaft includes first Input shaft 11 and the second input shaft 12, the second input shaft 12 can be hollow shaft, and the first input shaft 11 can be solid shafting, and first The a part of of input shaft 11 can be embedded in the second hollow input shaft 12, and another part of the first input shaft 11 can be from second Axially outward in input shaft 12, the first input shaft 11 and the second input shaft 12 can be coaxially arranged.

Output shaft can be two, i.e. the first output shaft 21 and the second output shaft 22, the first output shaft 21 and second export Axis 22 and input shaft are arranged in parallel, and the first output shaft 21 and the second output shaft 22 can be solid shafting.

Power drive system 100 according to an embodiment of the present invention can have five forward ranges, specifically, the first input shaft Odd number gear driving gear can be arranged on 11, and arrangement even number gear driving gear can be set on the second input shaft 12, thus the One input shaft 11 is responsible for the power transmitting of odd number shift gear pair, and the power that the second input shaft 12 is responsible for even number shift gear pair passes It passs.

More specifically, as Figure 1-Figure 4, a gear driving gear 1a, three gear masters can be disposed on the first input shaft 11 Moving gear 3a and five keeps off driving gear 5a, and the gear driving gear of two gear driving gear 2a and four can be disposed on the second input shaft 12 4a, each gear driving gear are rotated synchronously with corresponding input shaft.

Accordingly, a gear driven gear 1b, second gear driven gear 2b, three gear driven gears are provided on the first output shaft 21 3b and four keeps off driven gear 4b, is provided with five gear driven gear 5b on the second output shaft 22, each equal empty set of driven gear is right On the output shaft answered, i.e., each driven gear being capable of differential rotation relative to corresponding output shaft.

Wherein, a gear driven gear 1b engages to constitute first gear pair, second gear driven tooth with a gear driving gear 1a Wheel 2b engages to constitute second gear pair with two gear driving gear 2a, and three gear driven gear 3b are engaged with three gear driving gear 3a To constitute three gear gear pairs, four gear driven gear 4b engage to constitute four gear gear pairs, five gears with four gear driving gear 4a Driven gear 5b engages to constitute five gear gear pairs with five gear driving gear 5a.

Due to being empty set structure between driven gear and output shaft, it is therefore desirable to synchronizer be arranged to corresponding driven gear It is synchronized with output shaft, to realize the output of power.

In some embodiments, in conjunction with shown in Fig. 1-Fig. 4, power drive system 100 includes one or three gear synchronizer 13c, two Four gear synchronizer 24c and five gear synchronizer 5c.

As shown in Figure 1, one or three gear synchronizer 13c are arranged on the first output shaft 21 and are located at a gear driven gear 1b and three It keeps off between driven gear 3b, one or three gear synchronizer 13c can be by a gear driven gear 1b or three gear driven gear 3b and the first input Axis 11 is engaged, so that the driven gear be enable to rotate synchronously with output shaft.

For example, as shown in connection with fig. 1, the clutch collars of one or three gear synchronizer 13c be moved to the left can by three gear driven gear 3b with First input shaft 11 engagement, so that three gear driven gear 3b can be rotated synchronously with the first output shaft 21.One or three gear synchronizer 13c Clutch collar move right and a gear driven gear 1b can be engaged with the first input shaft 11, so that one keeps off driven gear 1b and first Output shaft 21 can rotate synchronously.

As shown in Figure 1, similarly, two or four gear synchronizer 24c are arranged on the first output shaft 21 and are located at second gear driven tooth Take turns 2b and four gear driven gear 4b between, two or four gear synchronizer 24c can by second gear driven gear 2b or four gear driven gear 4b with First input shaft 11 is engaged, so that the driven gear be enable to rotate synchronously with output shaft.

For example, as shown in connection with fig. 1, the clutch collars of two or four gear synchronizer 24c be moved to the left can by second gear driven gear 2b with First output shaft 21 engagement, so that second gear driven gear 2b and the first output shaft 21 rotate synchronously.Two or four gear synchronizer 24c's connects Trap, which moves right, to be combined four gear driven gear 4b with the first output shaft 21, thus four gear driven gear 4b and the first output Axis 21 rotates synchronously.

As shown in Figure 1, similarly, five gear synchronizer 5c are arranged on the second output shaft 22, five gear synchronizer 5c are located at five The side of driven gear 5b, such as left side are kept off, five gear synchronizer 5c are used to meet five gear driven gear 5b with the second output shaft 22 It closes, such as the clutch collar of five gear synchronizer 5c moves right, then five gear driven gear 5b can be engaged with the second output shaft 22, from And five gear driven gear 5b and the second output shaft 22 rotate synchronously.

The embodiment of-Fig. 4 referring to Fig.1, since reverse idler gear 72, intermediate idler 73 are respectively positioned on the second output shaft 22 On, and five gear driven gear 5b also are located on the second output shaft 22, and five gear synchronizer 5c are served only for five gear driven tooth of engagement Wheel 5b, reverse gear synchronizer 74c are served only for engagement intermediate idler 73 and reverse idler gear 72.Therefore implementation as one preferred Mode, the gear of reverse gear synchronizer 74c and five synchronizer 5c share a shifting fork mechanism, thereby reduce a set of shifting fork mechanism, so that The structure of power drive system 100 is more compact, smaller.

It is understood that in the clutch collar by five gear synchronizer 5c and reverse gear synchronizer 74c of shifting fork mechanism driving When movement, as shown in connection with fig. 1, when the clutch collar of the five gear synchronizer 5c of shift fork driving of the shifting fork mechanism moves right, five gears Synchronizer 5c can engage five gear driven gear 5b, and the clutch collar of reverse gear synchronizer 74c does not engage reverse idler gear 72 at this time With intermediate idler 73.The shifting fork mechanism shift fork driving reverse gear synchronizer 74c clutch collar engagement reverse idler gear 72 with When intermediate idler 73, the clutch collar of five gear synchronizer 5c does not engage five gear driven gear 5b.Certainly, it is driven herein in relation to shifting fork mechanism The action process of the clutch collar of the gear of dynamic reverse gear synchronizer 74c and five synchronizer 5c is only illustrative, and is not to be construed as pair A kind of limitation of the invention.

In some embodiments of the invention, the first input shaft 11 of engine 4 and speed changer and the second input shaft 12 it Between can be power transmitting or separation are carried out by double clutch 2d.

Referring to shown in Fig. 2-Fig. 4, double clutch 2d has input terminal 23d, the first output end 21d and second output terminal 22d, Engine 4 is connected with the input terminal 23d of double clutch 2d, specifically, engine 4 can pass through flywheel, damper or torsion The diversified forms such as disk are connected with the input terminal 23d of double clutch 2d.

The first output end 21d of double clutch 2d is connected with the first input shaft 11, thus the first output end 21d and first 11 synchronous rotary of input shaft.The second output terminal 22d of double clutch 2d is connected with the second input shaft 12, thus the second output terminal 12 synchronous rotary of 22d and the second input shaft.

Wherein, the input terminal 23d of double clutch 2d can be the shell of double clutch 2d, the first output end 21d and Two output end 22d can be two driven discs.Generally, shell and two driven discs, which can be, all disconnects, i.e. input terminal 23d It is disconnected with the first output end 21d and second output terminal 22d, when needing to engage one of driven disc, can control shell Engage with corresponding driven disc to synchronous rotary, i.e. input terminal 23d and the first output end 21d and second output terminal 22d it One engagement, so that the power that input terminal 23d is transmitted can be defeated by one in the first output end 21d and second output terminal 22d Out.

Particularly, shell can also be engaged with two driven discs simultaneously, i.e. input terminal 23d can also be exported with first simultaneously 21d and second output terminal 22d engagement is held, so that the power that input terminal 23d is transmitted can pass through the first output end 21d and second simultaneously Output end 22d output.

It should be appreciated that the specific engagement state of double clutch 2d is controlled the influence of strategy, for the technology of this field For personnel, can according to actually required transmission mode adaptive settings control strategy, so as to input terminal 23d with It is switched in the various modes that two output ends are all off and at least one input terminal 23d and two output ends engage.

About motor power axis second gear 32, as described above, it is linked with one in output shaft. Specifically, in some embodiments, transmission gear 6, transmission gear 6 and motor power axis are fixedly installed on the second output shaft 22 Second gear 32 directly engages.

Below with reference to Fig. 2-Fig. 4 to three power output shafts (i.e. the first output shaft 21, the second output shaft 22 and motor power Axis 3) and differential for vehicles 75 between relationship be described in detail.

The differential mechanism 75 of vehicle can be arranged between a pair of of front-wheel or between a pair of rear wheels, in some examples of the invention In, differential mechanism 75 is located between a pair of of front-wheel.The function of differential mechanism 75 is when vehicle turning travels or on uneven road surface When driving, roll driving wheels with different angular speed, to guarantee to make PURE ROLLING between two side drive wheels and ground. Main reducing gear driven gear 74 is provided on differential mechanism 75, such as main reducing gear driven gear 74 can be arranged in differential mechanism 75 On shell.Main reducing gear driven gear 74 can be bevel gear, but not limited to this.

Further, the first output shaft output gear 211, the first output shaft output gear are fixedly installed on the first output shaft 21 Wheel 211 is rotated synchronously with the first output shaft 21, and the first output shaft output gear 211 engages biography with main reducing gear driven gear 74 It is dynamic, so that the power from the first output shaft 21 can be transferred to main reducing gear driven tooth from the first output shaft output gear 211 Wheel 74 and differential mechanism 75.

Similarly, the second output shaft output gear 221, the second output shaft output gear are fixedly installed on the second output shaft 22 Wheel 221 is rotated synchronously with the second output shaft 22, and the second output shaft output gear 221 engages biography with main reducing gear driven gear 74 It is dynamic, so that the power from the second output shaft 22 can be transferred to main reducing gear driven tooth from the second output shaft output gear 221 Wheel 74 and differential mechanism 75.

In addition, reverse gear 71 is the power output end as most of reverse mode, therefore the reverse gear 71 is same Sample is engaged with main reducing gear driven gear 74.And since reverse gear 71 is also engaged with reverse idler gear 72 simultaneously, it is simultaneously Suitable reverse speed ratio is obtained, as a kind of optional embodiment, reverse gear 71 is configured to duplicate gear, the duplex-gear A part of the reverse gear 71 of structure is engaged with reverse idler gear 72, another portion of the reverse gear 71 of the duplex toothing Divide and is engaged with main reducing gear driven gear 74.In other words, one of gear part 712 of reverse gear 71 is and center tooth of reversing gear Wheel 72 engages and another gear part 711 is engaged with main reducing gear driven gear 74.Thus can not only obtain it is good fall Keep off speed ratio, at the same reverse gear power transmitting when each gear will not interfere, guarantee power transmitting of reversing gear is reliable.

Some typical conditions of power drive system 100 according to an embodiment of the present invention include power generation in parking, double clutch 2d simultaneously engage in the case of while driving while charge and 51 second gear of the first motor generator adjust the speed.

This typical condition of power generation in parking is described first, when vehicle is in parked state, engine 4 is arranged to generate Power output to input shaft one (input shaft to link with motor power axis first gear 31, such as Two input shafts 12), and outputed power by motor power axis synchronizer 33c to synchronizing for motor power axis first gear 31 To the first motor generator 51, so that the first motor generator 51 of driving generates electricity.

Specifically, engine 4 can lead to power after vehicle parking in conjunction with Fig. 2-Fig. 4 exemplary specific embodiment It crosses double clutch 2d and exports to the second input shaft 12, the motor power axis on second input shaft 12 and motor power axis 3 the One gear 31 is linkage, control motor power axis synchronizer 33c engagement motor power axis 3 and motor power axis first gear 31, then the power that engine 4 exports will be from the second input shaft 12, intermediate idler 73, motor power axis first gear 31 and motor Line shaft synchronizer 33c is exported to motor power axis 3, this final partial power is exported from motor power axis 3 to the first electronic hair Motor 51, so that the first motor generator 51 of driving generates electricity as generator.

Hereby it is achieved that power generation in parking function, enriches charge mode, and vehicle is in static shape under power generation in parking operating condition State, the power of engine 4 can be completely used for charging, and improve charge efficiency, realize quick function of supplying power.

Secondly charge in driving operating condition, under the operating condition, engine 4 in the case of description double clutch 2d is simultaneously engaged with A portion can be moved with conjugation while the first output end 21d and second output terminal 22d by input terminal 23d Power is exported by a wherein output shaft to wheel using the power as vehicle driving, and another part power is passed through motor The output of power axis 3 is to the first motor generator 51, so that the first motor generator 51 of driving generates electricity.

Specifically, in conjunction with the exemplary specific embodiment of Fig. 2-Fig. 4, under the operating condition, a part of power of engine 4 can be from First output shaft 21 or the output of the second output shaft 22, such as, three gear gear pairs secondary by first gear or five gear gear pair outputs, Another part power of engine 4 can be from motor power axis first gear 31, motor power axis synchronizer 33c, motor power axis 3 This path is exported to the first motor generator 51, thus driving the first motor generator 51 power generation.

In the power drive system due to tradition with double clutch, double clutch 2d is in only one clutch of synchronization Device is in running order, and power drive system according to an embodiment of the present invention 100 is realized to the breakthrough of double clutch 2d Using that is, (input terminal 23d simultaneously engages with the first output end 21d under two clutch whole engagement states of double clutch 2d With second output terminal 22d) so that a part of power of engine 4 is by an output shaft output driving vehicle driving, another part Power is then exported to the first motor generator 51, and driving motor power generation enriches transmission mode, takes into account vehicle driving and charging It is required that.

The second gear speed-regulating function of first motor generator 51 is described again, specifically, in conjunction with shown in Fig. 2-Fig. 4, due to electricity Mechanomotive force axis synchronizer 33c is arranged between motor power axis first gear 31 and motor power axis second gear 32, the first electricity Dynamic generator 51 passes through motor power axis first gear 31 or motor to the property of can choose when as motor output power Power axis second gear 32 exports, and in the transition period, needs the synchronism switching of motor power axis synchronizer 33c.Specifically, work as electricity When mechanomotive force axis synchronizer engages motor power axis first gear 31, the power of the first motor generator 51 passes through first gear 31 Output, at this time the first motor generator 51 selection the first gear (i.e. large speed ratio gear), motor power axis synchronizer 33c and two or four Keep off synchronizer 24c toward as figure left direction dial, at this time the power of the first motor generator 51 by motor power axis synchronizer 33c, Motor power axis first gear 31, intermediate idler 73, two gear driving gear 2a, second gear driven gear 2b, two or four gear synchronizers 24c, the first output shaft 21, the first output shaft output gear 211, main reducing gear driven gear 74, using hybrid vehicle Power drive system to wheel；When motor power axis synchronizer engages motor power axis second gear 32, the first electronic hair The power of motor 51 is exported by second gear 32, and the first motor generator 51 selects the second gear (i.e. small speed ratio shelves at this time Position), motor power axis synchronizer 33c right direction into such as figure is dialled, and the power of the first motor generator 51 passes through motor at this time Power axis synchronizer 33c, motor power axis second gear 32, transmission gear 6, the second output shaft 22, the second output shaft output gear 221, main reducing gear driven gear 74 is transmitted to wheel using the power drive system of hybrid vehicle.

For example, being from motor power axis second gear 32 from 31 output motor powershift of motor power axis first gear During output power, the clutch collar needs of motor power axis synchronizer 33c are engaged from motor power axis first gear 31 Position be switched to the position engaged with motor power axis second gear 32, due to motor power axis first gear 31 arrive main deceleration Between device driven gear 74 between the speed ratio of transmission path and motor power axis second gear 32 and main reducing gear driven gear 74 The speed ratio of drive path is different, therefore during handoff synchronizer synchronous motor line shaft second gear 32, motor Line shaft second gear 32 and motor power axis 3 are differential rotations, will increase the synchronization time of synchronizer in this way, while also increasing Add the abrasion of synchronizer, reduced transmission efficiency, is easy to appear power interruption or pause and transition in rhythm or melody sense caused by can not synchronizing for a long time.

At this point it is possible to control revolving speed of first motor generator 51 based on motor power axis second gear 32 and adjust motor The revolving speed of line shaft 3 promotes as target or reduces turning for motor power axis 3 using the revolving speed of motor power axis second gear 32 Speed enables the revolving speed of motor power axis 3 to match (i.e. substantially phase with motor power axis second gear 32 within the shortest time Deng or it is close), so that motor power axis synchronizer 33c can be quickly engaged motor power axis second gear 32 and motor Power axis 3, reduce motor power axis synchronizer 33c synchronize the required time, greatly improve the transmission efficiency of vehicle, synchronization can Control property with synchronous real-time.In addition, the service life of motor power axis synchronizer 33c is further extended, to reduce vehicle The cost of maintenance.

It similarly, is being from motor power axis first gear from 32 output motor powershift of motor power axis second gear During 31 output powers, the first motor generator 51 can be based on the rotational speed regulation motor of motor power axis first gear 31 The revolving speed of line shaft 3 promotes or reduces the revolving speed of motor power axis 3 using 31 revolving speed of motor power axis first gear as target, The revolving speed of motor power axis 3 is matched within the shortest time with motor power axis first gear 31, to improve electricity The joint efficiency of mechanomotive force axis synchronizer 33c.

To sum up, in short, motor power axis synchronizer 33c with motor power axis first gear 31 and motor power axis During one in two gears 32 engagement is switched to and engages with another, the first motor generator 51 is arranged to motor power axis Another revolving speed in first gear 31 and motor power axis second gear 32 is that target adjusts the speed motor power axis 3.

This function is adjusted the speed for the first motor generator 51, typical condition is under electric-only mode, i.e., first is electronic When generator 51 drives vehicle driving.Certainly, the present invention is not limited thereto, and dynamic model formula for example mixed for other modes needs electricity When mechanomotive force axis synchronizer 33c comes switch motor line shaft first gear 31 and motor power axis second gear 32, can it adopt Motor power axis 3 is adjusted the speed with the first motor generator 51.

Power drive system 100 according to an embodiment of the present invention as a result, motor power axis synchronizer 33c is in motor power When switching bonding station between axis first gear 31 and motor power axis second gear 32, pass through 51 pairs of electricity of the first motor generator The speed regulation of mechanomotive force axis 3, enables the revolving speed of motor power axis 3 and gear to be joined (such as the first tooth of motor power axis Wheel 31 or motor power axis second gear 32) revolving speed matches, i.e., and the first motor generator 51 can be with gear to be joined Revolving speed is that the revolving speed of motor power axis 3 is adjusted in target, makes the revolving speed of motor power axis 3 and the revolving speed of gear to be joined It matches in a short time, facilitates the engagement of motor power axis synchronizer 33c, to substantially increase transmission efficiency, reduce intermediate The transmitting of energy is lost.

Power drive system 100 according to some embodiments of the present invention, can also add a motor generator 52 with Increase the dynamic property of power drive system 100, enriches transmission mode.

For example, motor generator 52 can be driven with main reducing gear driven gear 74 in wherein some embodiments, such as electricity Gear can be set on the motor shaft of dynamic generator 52, the gear and the directly engaged transmission of main reducing gear driven gear 74.For another example, In further embodiments, motor generator 52 also can be set into be connected with the first input shaft 11 or with 21 phase of the first output shaft Even.For another example, in still other embodiments, motor generator 52 is two and is separately positioned on the two sides of differential mechanism 75, such as should Two motor generators 52 can become one with differential mechanism 75.

The construction of power drive system 100 and typical work in each specific embodiment is briefly described referring to Fig. 2-Fig. 4 Condition.

Embodiment one:

As shown in Fig. 2, engine 4 is connected with the input terminal 23d of double clutch 2d, the first output end of double clutch 2d 21d is connected with the first input shaft 11, and the second output terminal 22d of double clutch 2d is connected with the second input shaft 12, double clutch 2d The the first output end 21d and second output terminal 22d of input terminal 23d and double clutch 2d can be in an off state simultaneously, or The input terminal 23d of person's double clutch 2d can be engaged with one of the first output end 21d of double clutch 2d and second output terminal 22d, Or the input terminal 23d of double clutch 2d can connect simultaneously with the first output end 21d and second output terminal 22d of double clutch 2d It closes.

Second input shaft 12 is hollow shaft structure, and the first input shaft 11 is solid shafting, and the second input shaft 12 is coaxially arranged On the first input shaft 11, and a part of the first input shaft 11 is axially outward out of second input shaft 12.

The gear driving gear 1a that can be rotated synchronously with the first input shaft 11, three gears are provided on first input shaft 11 actively The gear of gear 3a and five driving gear 5a, a gear driving gear 1a are located at the right side of five gear driving gear 5a, three gear driving gear 3a Positioned at the left side of five gear driving gear 5a.

Being provided on second input shaft 12 can lead with the gear of two gear driving gear 2a and four that the second input shaft 12 rotates synchronously Moving gear 4a, two gear driving gear 2a are located at left side and four gear driving gear 4a are located at right side.

First output shaft 21 and two input shafts are arranged in parallel, be set on the first output shaft 21 a gear driven gear 1b, Second gear driven gear 2b, three gear driven gear 3b and four gear driven gear 4b, an a gear driven gear 1b and gear driving gear 1a It directly engages, second gear driven gear 2b is directly engaged with two gear driving gear 2a, three gear driven gear 3b and three gear driving gears 3a is directly engaged, and four gear driven gear 4b are directly engaged with four gear driving gear 4a.

One or three gear synchronizer 13c and two or four gear synchronizer 24c, one or three gear synchronizers are additionally provided on first output shaft 21 13c is located between a gear driven gear 1b and three gear driven gear 3b, and optionally by a gear driven gear 1b or three gears Driven gear 3b is synchronous with the first output shaft 21, and two or four gear synchronizer 24c are located at the gear driven gear of second gear driven gear 2b and four Between 4b, and it is optionally that the gear of second gear driven gear 2b or four driven gear 4b is synchronous with the first output shaft 21.

Second output shaft 22 is equally arranged in parallel with two input shafts, and five gear driven gears are set on the second output shaft 22 5b, five gear driven gear 5b are directly engaged with five gear driving gear 5a, and five gear synchronizer 5c are additionally provided on the second output shaft 22, Five gear synchronizer 5c are used for five gear driven gear 5b are synchronous with the second output shaft 22.

Motor power axis 3 is arranged in parallel with two input shafts, two output shafts, is set with motor on motor power axis 3 Power axis first gear 31 and motor power axis second gear 32, motor power axis first gear 31 are located at left side, motor power axis Second gear 32 is located at right side.Motor power axis synchronizer 33c, motor power axis synchronizer are additionally provided on motor power axis 3 33c is located between motor power axis first gear 31 and motor power axis second gear 32, and motor power axis synchronizer 33c is used for Selectively by motor power axis first gear 31 it is synchronous with motor power axis 3 or by motor power axis second gear 32 and electricity Mechanomotive force axis 3 is synchronous.

In addition, as shown in Fig. 2, being additionally provided with the driving cog that can be rotated synchronously with the second output shaft 22 on the second output shaft 22 Wheel 6 and empty set are provided with reverse idler gear 72, and transmission gear 6 is directly engaged with motor power axis second gear 32, reversed gear The side of intermediate gear 72 forms set 721 with teeth, and tooth covers 721 same empty sets on the second output shaft 22,73 empty set of intermediate idler On tooth set 721, intermediate idler 73 is engaged with two gear driving gear 2a and motor power axis first gear 31 respectively, is reversed gear same Step device 74c is arranged on tooth set 721 and can be used for engaging intermediate idler 73.

Reverse gear 71 is configured to duplicate gear, and a gear part 712 and the reverse idler gear 72 of reverse gear 71 are nibbled It closes, another gear part 711 of reverse gear 71 is directly engaged with main reducing gear driven gear 74, while on the first output shaft 21 It is fixedly installed the first output shaft output gear 211 engaged with main reducing gear driven gear 74, fixed on the second output shaft 22 It is provided with the second output shaft output gear 221 engaged with main reducing gear driven gear 74.

First motor generator 51 with motor power axis 3 is coaxial is connected.

The typical condition of power drive system 100 shown in Fig. 2 is described in detail below.

Parking charging operating condition:

The input terminal 23d engagement second output terminal 22d of double clutch 2d is simultaneously disconnected, motor power with the first output end 21d Axis synchronizer 33c engages motor power axis first gear 31, so that the power that engine 4 exports successively passes through double clutch 2d's Input terminal 23d, second output terminal 22d, the second input shaft 12, two gear driving gear 2a, intermediate idler 73, motor power axis first The first motor generator 51 is passed to after gear 31, motor power axis synchronizer 33c, motor power axis 3, thus the first electricity of driving Dynamic generator 51 generates electricity.

Can be realized constant-speed ratio charging under the operating condition, energy transfer efficiency is higher, and about the selected of speed ratio, with engine The permitted maximum speed of additional components such as the type selecting of revolving speed, the first motor generator 51 when 4 parking and periphery bearing There is direct relation, for the ordinary skill in the art, the factors such as above that can integrate account for, flexible design phase The transmission speed ratio answered enables power drive system 100 maximumlly to utilize the energy of engine 4 in power generation in parking, reaches To quick charge purpose.

Pure electric vehicle operating condition:

Path one: motor power axis synchronizer 33c engages motor power axis first gear 31, and the first motor generator 51 is defeated Power out keeps off synchronizer 24c by motor power axis first gear 31, the output of intermediate idler 73 to the second input shaft 12,24 The gear driven gear 4b of second gear driven gear 2b or four is engaged, so that the power of the first motor generator 51 can pass through second gear pair Or four gear gear pair output.

Path two: motor power axis synchronizer 33c engages motor power axis second gear 32, and the first motor generator 51 is defeated Power out is exported by motor power axis second gear 32, transmission gear 6 from the second output shaft 22.

As a result, in the case where power drive system 100 is in pure electric vehicle operating condition, the first motor generator 51 can pass through above-mentioned two There is item the path of different speed ratios to output power to wheel, to drive vehicle driving.

Preferably, when switching over to above-mentioned path, the first motor generator 51 can adjust motor power axis 3 Speed.

Description from path one is switched to path two first: at this time motor power axis synchronizer 33c from motor power axis the The position of one gear 31 engagement is moved to the position engaged with motor power axis second gear 32, during this period, the first electronic hair Motor 51 can be adjusted the revolving speed of motor power axis 3, make electricity using the revolving speed of motor power axis second gear 32 as target The revolving speed of mechanomotive force axis 3 is matched with motor power axis second gear 32, so that motor power axis synchronizer 33c can be quickly engaged Motor power axis second gear 32 improves synchronous efficiency.

Secondly description from path two is switched to path one: at this time motor power axis synchronizer 33c from motor power axis the The position of two gears 32 engagement is moved to the position engaged with motor power axis first gear 31, during this period, the first electronic hair Motor 51 can be adjusted the revolving speed of motor power axis 3, make electricity using the revolving speed of motor power axis first gear 31 as target The revolving speed of mechanomotive force axis 3 is matched with motor power axis first gear 31, so that motor power axis synchronizer 33c can be quickly engaged Motor power axis first gear 31 improves synchronous efficiency.

However, it is to be understood that above-mentioned speed-regulating mode is applicable not only to pure electric vehicle operating condition, it can be applicable to other Operating condition, such as mixed condition etc. of starting building, as long as being related to the changed operating condition (example of engagement state of motor power axis synchronizer 33c Such as from engaged with motor power axis first gear 31 be switched to engaged with motor power axis second gear 32 or from motor The engagement of power axis second gear 32 is switched to be engaged with motor power axis first gear 31), it is suitable for above-mentioned speed-regulating mode.

The mixed condition scheme one of starting building of various gears:

Power drive system 100 be in a gear it is mixed start building condition when, one or three gear synchronizer 13c engagement, one gear driven gear The input terminal 23d of 1b, double clutch 2d engage the first output end 21d and disconnect with second output terminal 22d, and motor power axis is synchronous Device 33c engages motor power axis second gear 32.To which the power that engine 4 exports passes through the first input shaft 11, first gear Pair is exported from the first output shaft 21, and the power of the first motor generator 51 output passes through motor power axis second gear 32, transmission Gear 6 is exported from the second output shaft 22, and two parts power is finally coupled at main reducing gear driven gear 74, after coupling Power distributes to the wheel of two sides from differential mechanism 75.

The gear is mixed to start building under condition, and the first motor generator 51 can be adjusted the speed, so that main reducing gear driven tooth Wheel 74 can evenly synchronize reception the power from engine 4 and the first motor generator 51, improve transmission ride comfort, Harmony.

Power drive system 100 be in second gear it is mixed start building condition when, two or four gear synchronizer 24c engage second gear driven gears The input terminal 23d of 2b, double clutch 2d engage second output terminal 22d and disconnect with the first output end 21d, and motor power axis is synchronous Device 33c engages motor power axis second gear 32.To which the power that engine 4 exports passes through the second input shaft 12, second gear Pair is exported from the first output shaft 21, and the power of the first motor generator 51 output passes through motor power axis second gear 32, transmission Gear 6 is exported from the second output shaft 22, and two parts power is finally coupled at main reducing gear driven gear 74, after coupling Power distributes to the wheel of two sides from differential mechanism 75.

Power drive system 100 be in three gears it is mixed start building condition when, be in the mixed condition of starting building of a gear with power drive system 100 Similar, difference is that one or three gear synchronizer 13c engagement, three gear driven gear 3b, the power of engine 4 are defeated by three gear gear pairs Out, remaining is substantially roughly the same with the mixed dynamic transmission of a gear, and which is not described herein again.

Power drive system 100 be in four gears it is mixed start building condition when, be in second gear with power drive system 100 and mix condition of starting building Similar, difference is that two or four gear synchronizer 24c engagement, four gear driven gear 4b, the power of engine 4 are defeated by four gear gear pairs Out, remaining is substantially roughly the same with the mixed dynamic transmission of second gear, and which is not described herein again.

Power drive system 100 be in five gears it is mixed start building condition when, five gear synchronizer 5c engagements five gear driven gear 5b is double The input terminal 23d of clutch 2d engages the first output end 21d and disconnects with second output terminal 22d, motor power axis synchronizer 33c Engage motor power axis second gear 32.To which the power that engine 4 exports keeps off gear pair from the by the first input shaft 11, five Two output shafts 22 output, the first motor generator 51 output power by motor power axis second gear 32, transmission gear 6 from The output of second output shaft 22, two parts power are coupled on the second output shaft 22, and the power after coupling divides from differential mechanism 75 The wheel of dispensing two sides.

The gear is mixed to start building under condition, and the first motor generator 51 can be adjusted the speed, so that 22 energy of the second output shaft Enough evenly synchronous power of the reception from engine 4 and the first motor generator 51, improves the ride comfort of transmission, coordinates Property.

The mixed condition scheme two of starting building of various gears:

Power drive system 100 be in a gear it is mixed start building condition when, one or three gear synchronizer 13c engagement, one gear driven gear 1b, two or four gear synchronizer 24c engagement second gear driven gear 2b (are from the output of second gear pair with 51 power of the first motor generator Example, certainly can also be from four gear gear pairs outputs), the input terminal 23d of double clutch 2d engage the first output end 21d and with it is second defeated Outlet 22d is disconnected, and motor power axis synchronizer 33c engages motor power axis first gear 31.

To which the power that engine 4 exports is exported by the first input shaft 11, first gear pair to the first output shaft 21, the The power of one motor generator 51 output passes through motor power axis first gear 31, intermediate idler 73, second gear pair, two or four gears Synchronizer 24c is exported to the first output shaft 21, and two parts power is coupled on the first output shaft 21, the power after coupling from Differential mechanism 75 distributes to the wheel of two sides.

The gear is mixed to start building under condition, and the first motor generator 51 can be adjusted the speed, so that 21 energy of the first output shaft Enough evenly synchronous power of the reception from engine 4 and the first motor generator 51, improves the ride comfort of transmission, coordinates Property.

Power drive system 100 be in second gear it is mixed start building condition when, two or four gear synchronizer 24c engage second gear driven gears The input terminal 23d of 2b, double clutch 2d engage second output terminal 22d and disconnect with the first output end 21d, and motor power axis is synchronous Device 33c engages motor power axis first gear 31.To which the power that engine 4 exports is exported by the second input shaft 12 to second gear The power of gear pair, the output of the first motor generator 51 passes through motor power axis first gear 31, the output of intermediate idler 73 to two Gear pair is kept off, two parts power is coupled in second gear pair, and the first output shaft of power 21 after coupling exports.

The gear is mixed to start building under condition, and the first motor generator 51 can be adjusted the speed, so that second gear pair can It is evenly synchronous to receive the power from engine 4 and the first motor generator 51, improve ride comfort, the harmony of transmission.

It, can not be at this since two or four gear gear pairs share two or four gear synchronizer 24c for condition of starting building mixed for four gears The mixed condition of starting building of four gears is realized under mode.

Power drive system 100 be in five gears it is mixed start building condition when, five gear synchronizer 5c engagements five gear driven gear 5b, two Four gear synchronizer 24c engage second gear driven gear 2b, and the input terminal 23d of double clutch 2d engage the first output end 21d and with the Two output end 22d are disconnected, and motor power axis synchronizer 33c engages motor power axis first gear 31.

It exports to which the power that engine 4 exports keeps off gear pair by the first input shaft 11, five to the second output shaft 22, the The power of one motor generator 51 output passes through motor power axis first gear 31, intermediate idler 73, second gear pair, two or four gears Synchronizer 24c is exported to the first output shaft 21, and two parts power is coupled at main reducing gear driven gear 74, after coupling Power distributes to the wheel of two sides from differential mechanism 75.

It should be noted that above-mentioned various gears it is mixed start building condition scheme second is that with two or four gear synchronizer 24c engage second gears from Illustrate for moving gear 2b, two or four gear synchronizer 24c can also engage four gear driven gear 4b under certain mode, at this time respectively The mixed dynamic principle of gear with it is above-mentioned unanimous on the whole, no longer repeat one by one here.And it is to be appreciated that keeping off synchronizer two or four It cannot achieve the mixed condition of starting building of second gear under the mode of four gear driven gear 4b of 24c engagement, principle and above-mentioned mode cannot achieve four gears It is mixed dynamic consistent.

To sum up, for the ordinary skill in the art, it can neatly select above-mentioned any according to actual needs Any mixed dynamic path in various gears mixed start building condition scheme one and the mixed condition scheme two of starting building of various gears, is greatly enriched power The transmission mode of transmission system 100, improves driving pleasure, enables the vehicle to better adapt to different road conditions, improves vehicle Dynamic property, fuel economy.

Engine charges operating condition scheme one in driving:

Power drive system 100 be in a rib driving side charging operating condition when, one or three gear synchronizer 13c engagement one gear from The input terminal 23d of moving gear 1b, double clutch 2d are engaged with the first output end 21d and are disconnected with second output terminal 22d, motor Power axis synchronizer 33c engages motor power axis second gear 32.To engine 4 export power by the first input shaft 11, First gear pair is exported from the first output shaft 21, is simultaneously from the counter of wheel and energy is dragged to pass through the second output shaft 22, transmission gear 6, output is to the first motor generator 51 after motor power axis second gear 32, motor power axis 3, thus the first electronic hair of driving Motor 51 generates electricity.

Power drive system 100 be in two ribs driving side charging operating condition when, two or four gear synchronizer 24c engage second gears from The input terminal 23d of moving gear 2b, double clutch 2d are engaged with second output terminal 22d and are disconnected with the first output end 21d, motor Power axis synchronizer 33c engages motor power axis first gear 31.To which a part of power that engine 4 exports passes through the second input Axis 12, second gear pair are exported from the first output shaft 21, engine 4 export another part power by the second input shaft 12, Output is to the first motor generator 51 after intermediate idler 73, motor power axis first gear 31, motor power axis 3, to drive The power generation of first motor generator 51.

When power drive system 100 is in three ribs driving side charging operating condition, a gear is in power drive system 100 Almost the same when the operating condition that charges in driving, difference is one or three gear synchronizer 13c engagement, three gear driven gear 3b at this time.

When power drive system 100 is in four ribs driving side charging operating condition, second gear is in power drive system 100 Almost the same when the operating condition that charges in driving, difference is two or four gear synchronizer 24c engagement, four gear driven gear 4b at this time.

When power drive system 100 is in five ribs driving side charging operating condition, five gear synchronizer 5c five gears of engagement are driven The input terminal 23d of gear 5b, double clutch 2d are engaged with the first output end 21d and are disconnected with second output terminal 22d, motor power Axis synchronizer 33c engages motor power axis second gear 32.To which the power that engine 4 exports passes through the first input shaft 11, five Gear gear pair is exported from the second output shaft 22, while the partial power on the second output shaft 22 also passes through transmission gear 6, motor Output is to the first motor generator 51 after power axis second gear 32, motor power axis 3, thus driving the first motor generator 51 hair Electricity.

Engine 4 charges operating condition scheme two in driving:

Engine 4 presented hereinbefore is charged in driving in operating condition scheme one, and double clutch 2d only has one in transmission A clutch carries out engaging work, such as its input terminal 23d is engaged with the first output end 21d or input terminal 23d and second is defeated Outlet 22d engagement, particularly, power drive system 100 according to an embodiment of the present invention, in the input terminal 23d of double clutch 2d In the case where simultaneously engaging with the first output end 21d and second output terminal 22d, the operating condition that charges in driving also can be realized.

With this condition, when power drive system 100 is in rib driving side charging operating condition, the input of double clutch 2d End 23d simultaneously engages with the first output end 21d and second output terminal 22d, and one or three gear synchronizer 13c engagements one keep off driven gear 1b, Motor power axis synchronizer 33c engages motor power axis first gear 31, so that a part of power that engine 4 exports is by the One input shaft 11, first gear pair are exported from the first output shaft 21, and another part power that engine 4 exports is from the second input shaft 12, intermediate idler 73, motor power axis first gear 31, the output of motor power axis 3 are to the first motor generator 51, to drive The power generation of first motor generator 51.

With this condition, power drive system 100 is in the driving of three ribs when charging operating condition or being in the driving of five ribs When the operating condition that charges, a rib is in above-mentioned power drive system 100 and drives side charging operating condition roughly the same, difference exists In, one or three gear synchronizer 13c engagement, three gear driven gear 3b when three gears are driven, five gear synchronizer 5c engagements, five gear when five gears are driven Driven gear 5b and power is exported from the second output shaft 22.

To sum up, for the ordinary skill in the art, above-mentioned start neatly can be selected according to actual needs Machine charge any drive path that operating condition scheme one and engine are charged when driving in operating condition scheme two in driving, greatly Ground enriches the transmission mode of power drive system 100, improves driving pleasure, enables the vehicle to better adapt to not go the same way Condition improves dynamic property, the fuel economy of vehicle.

It reverses gear operating condition:

Power drive system 100 be in machinery reverse gear operating condition when, synchronous 72 He of reverse idler gear of reverse gear synchronizer 74c Intermediate idler 73, the input terminal 23d of double clutch 2d engage second output terminal 22d and disconnect with the first output end 21d, engine The power of 4 outputs after the second input shaft 12, intermediate idler 73, reverse idler gear 72 from reverse gear 71 by exporting.

When power drive system 100 is in electronic reverse mode, motor power axis synchronizer 33c synchronous motor line shaft 3 reverse idler gears 72 synchronous with motor power axis first gear 31, reverse gear synchronizer 74c and intermediate idler 73, first is electronic The power that generator 51 exports passes through motor power axis 3, motor power axis first gear 31, intermediate idler 73, center tooth of reversing gear It is exported after wheel 72 from reverse gear 71.

When power drive system 100 is in mixed dynamic reverse mode, motor power axis synchronizer 33c synchronous motor line shaft 3 reverse idler gears 72 synchronous with motor power axis first gear 31, reverse gear synchronizer 74c and intermediate idler 73, engine 4 are defeated Power out is exported by the second input shaft 12 to intermediate idler 73, and the power of the first motor generator 51 output passes through motor Power axis 3, the output of motor power axis first gear 31 to intermediate idler 73, two parts power lead to again after coupling at intermediate idler 73 Reverse idler gear 72 is crossed to export from reverse gear 71.

Parking charging operating condition, pure electric vehicle operating condition, the mixed condition scheme one of starting building of various gears, the various gears being introduced above are mixed and are started building Charge in driving operating condition scheme one, engine of condition scheme two, engine charges operating condition scheme two and work of reversing gear when driving In condition, the first motor generator 51 is rotated according to same predetermined direction from beginning to end, i.e., the first motor generator 51 is being made It when working for electric motor operation and generator, can be rotated according to same direction always, especially for from pure electric vehicle operating condition, each During the mixed condition scheme two of starting building of the mixed condition scheme one of starting building of gear, various gears switches to operating condition of reversing gear, the first motor generator 51 be also without commutation, so that the first motor generator 51 can be same from beginning to end under any operating condition for participating in work To rotation, improves due to motor commutation bring impact sense, pause and transition in rhythm or melody sense etc., improve the service life of power drive system 100.

Embodiment two:

As shown in figure 3, the master of power drive system 100 and power drive system 100 shown in Fig. 2 in the embodiment It distinguishes and is at reverse idler gear 72, intermediate idler 73 and reverse gear synchronizer 74c.In this embodiment, it reverses gear center tooth Wheel 72 and intermediate idler 73 are adjacent empty sets on the second output shaft 22, and reverse gear synchronizer 74c is arranged on intermediate idler 73 And for engaging reverse idler gear 72.It then can be with the power drive system 100 basic one in Fig. 2 embodiment for rest part It causes, which is not described herein again.

Embodiment three:

As shown in figure 4, the master of power drive system 100 shown in power drive system 100 in the embodiment and Fig. 3 Distinguish the construction for being intermediate idler 73.In this embodiment, intermediate idler 73 is configured to duplicate gear, and has gear part 731,732, one of gear part 731 engaged with two gear driving gear (i.e. with input shaft it is one on gear actively Gear), another gear part 732 is engaged with motor power axis first gear 31.For rest part then can in Fig. 3 embodiment Power drive system 100 it is almost the same, which is not described herein again.

In addition, embodiment according to the present invention further provides the vehicle including power drive system 100 as described above ?.It should be understood that other compositions of vehicle according to an embodiment of the present invention such as driving system, steering system, braking system System etc. has been the prior art and has been well known for ordinary skill in the art, therefore herein to the detailed description of well known structures It is omitted.

Power drive system based on the above embodiment and the hybrid vehicle with the power drive system, the present invention Embodiment proposes a kind of control method of hybrid vehicle, wherein the controlling party of the hybrid vehicle of the embodiment of the present invention Method is executed based on the hybrid vehicle with above-mentioned power drive system.With reference to the accompanying drawings come be described in detail according to this The control method of hybrid vehicle, the power drive system of hybrid vehicle and the hybrid power vapour that inventive embodiments propose Vehicle.

Fig. 8 is the flow chart of the control method of hybrid vehicle according to an embodiment of the present invention.

In one embodiment of the invention, as shown in Figure 5-Figure 7, the power drive system of hybrid vehicle may include Engine 4, multiple input shafts (for example, first input shaft 11, the second input shaft 12), multiple output shafts are (for example, the first output shaft 21, the second output shaft 22), motor power axis 3, the first motor generator 51 and the second motor generator 511, wherein such as Fig. 1- Shown in Fig. 4, engine 4 is arranged to be selectively engageable at least one of multiple input shafts, is provided on each input shaft Gear driving gear is provided with gear driven gear on each output shaft, and gear driven gear and gear driving gear are accordingly Engagement, motor power axis 3 are arranged to link with one (for example, second input shaft 12) in input shaft, the first dynamoelectric and power generation Machine 51 is arranged to link with motor power axis 3.

Wherein, engine 4 and/or the first motor generator 51 are for driving pair of wheels 76, the second motor generator 511 are arranged for second pair of wheel 77 of driving, wherein pair of wheels 76 is a pair in front wheels and rear wheels, second pair of wheel 77 be the another pair in front wheels and rear wheels.In the example of Fig. 5-Fig. 7, engine 4 and the first motor generator 51 driving two A front-wheel, the second motor generator 511 is for driving two rear-wheels, for example, the second motor generator 511 can be subtracted by one Fast mechanism 85 drives two rear-wheels or the second motor generator 511 is two and respectively by a deceleration mechanism driving one A rear-wheel or the second motor generator 511 can be wheel motor and for rear-wheels.

In addition, according to the description of Fig. 1-Fig. 4 it is found that the power drive system of hybrid vehicle may also include double clutch 2d and synchronizer are (for example, one or three gear synchronizer 13c, two or four gear synchronizer 24c, five gear synchronizer 5c, reverse gear synchronizer 74c With motor power axis synchronizer 33c).Also, a gear driving gear 1a, three gear driving tooths can be disposed on the first input shaft 11 The gear driving gear 5a of 3a and five is taken turns, the gear of two gear driving gear 2a and four driving gear 4a can be disposed on the second input shaft 12. Accordingly, a gear driven gear 1b, second gear driven gear 2b, three gear driven gear 3b and four gears are provided on the first output shaft 21 Driven gear 4b is provided with five gear driven gear 5b on the second output shaft 22.

Engine 4 can realize 5 gear speed changes as a result, to can improve the work of engine by the gear for increasing engine Region improves engine economy, while can improve the dynamic property of hybrid vehicle, whole when hybrid vehicle power shortage The dynamic property and economy that vehicle is shown can improve significantly.

It is understood that in some embodiments, multiple input shafts are (for example, the first input shaft 11, the second input shaft 12), on multiple output shafts (for example, first output shaft 21, the second output shaft 22) and motor power axis 3 and each axis associated gear with And shifting element (e.g., synchronizer) may make up the speed changer of hybrid vehicle.

Based on above-mentioned power drive system, the hybrid vehicle of the embodiment of the present invention can have series model, parallel connection Three kinds of operating modes of mode and mixed connection mode.Hybrid vehicle is described respectively below with reference to Fig. 5-7 to work under Three models When energy transmission route.

When hybrid vehicle works under series model, engine 4 passes through the second output terminal 22d of double clutch 2d (in conjunction with) drives the first motor generator 51 power generation (as power generation cascade), is supplied to the second motor generator 511 driving second Wheel 77 is used, energy transmission route is as shown in the dotted line 01 and solid line 02 in Fig. 5.

When hybrid vehicle works under paralleling model, engine 4 passes through the first output end 21d of double clutch 2d Or second output terminal 22d (any output end combination), its power is transferred to speed changer, is reached finally by main reducing gear Pair of wheels 76, while power is reached pair of wheels 76 by reverse gear synchronizer 74c by the first motor generator 51, and is driven Dynamic first motor generator 51 power generation (power generation as in parallel).Solid line 03 in energy transmission route such as Fig. 6 is (with the first electronic hair Motor 51 select the second gear for)+dotted line 04 (and by engine 4 selection 5 gear for) shown in.

When hybrid vehicle works under mixed connection mode, engine 4 passes through the first output end 21d of double clutch 2d Or second output terminal 22d (in conjunction with) drives pair of wheels 76, dump power drives the first motor generator 51 to generate electricity Supplying the second motor generator 511 drives second pair of wheel 77 to use, and the solid line 03 in energy transmission route such as Fig. 7 is (with first Motor generator 51 selects for the second gear)+dotted line 04 (by taking 5 gear of the selection of engine 4 as an example) is shown in+solid line 02.

The control method of the hybrid vehicle of the embodiment of the present invention is described in detail below.

As shown in figure 8, the control method of the hybrid vehicle of the embodiment of the present invention the following steps are included:

S1: the operating condition of hybrid vehicle and/or the working condition of power battery are detected.

Wherein, the operating condition of hybrid vehicle may include current gear, demand torque, speed, accelerator pedal aperture, Engine speed etc., the working condition of power battery may include the SOC of power battery (State of Charge, remaining capacity or State-of-charge), the maximum discharge power of power battery.

S2: according to the work of the operating condition and/or power battery of the instruction of the pattern switching of user and hybrid vehicle Make state control hybrid vehicle and switch to corresponding operating mode, wherein operating mode may include electric-only mode and mix Dynamic mode is closed, and when hybrid vehicle is in electric-only mode or hybrid mode, controllable first is electronic Generator and the second motor generator carry out torque distribution simultaneously.

According to an embodiment of the present invention, when automobile enters low attached road surface, climbing or turning road surface from ideal road surface, only It needs to adjust the distribution of the first motor generator and the second motor generator, low attached road surface (such as sandstone, miriness and knot can be passed through The road surfaces such as ice), climbing or turning road surface.For example, when encountering low attached road surface or climbing in vehicle traveling process, by judging front truck Wheel and rear wheel slippery conditions distribute to carry out the torque of the first motor generator and the second motor generator, to play every The maximum adhesion power of a wheel, by taking the first motor generator drives front vehicle wheel and the second motor generator driving rear wheel as an example, When rear wheel skids, the first motor generator increases torque output to drive running car, and the second motor generator is before The revolving speed of wheel carries out reduction of speed limit and turns round control, reduces torque output；When rear wheel skids, the second motor generator increases torque It exports to drive running car, the first motor generator is defeated according to the revolving speed of front vehicle wheel progress reduction of speed limit torsion control, reduction torque Out；When front vehicle wheel and rear wheel skid simultaneously, according to the speed of hybrid vehicle to the first motor generator and the second electricity Dynamic generator carries out reduction of speed limit simultaneously and turns round control while reducing torque output, to guarantee the stability and ride comfort of automobile.

Torque distribution is carried out simultaneously by the first motor generator of control and the second motor generator, it can be achieved that complete as a result, When 4 wheel driven, have better passability, that is, dynamic response characteristics, and have well turn to property (turn to property it is bad when, front drive vehicle Understeer, after drive ovdersteering), handling and cross-country ability.Also, in the present embodiment, not being will by power takeoff Power is transferred to other axis (mechanical 4 wheel driven), but directly converts electrical energy into kinetic energy by electric device, that is, motor generator, Running car is assisted, to ensure that good economy.

In addition, it is necessary to explanation, electric-only mode can pure electric vehicle economic model and pure electric vehicle motor pattern, hybrid power Mode may include hybrid power economic model and hybrid power motor pattern.When hybrid vehicle enters electric-only mode, Hybrid vehicle can also switch to pure electric vehicle economic model or pure electric vehicle movement mould according to the instruction of user,；Work as hybrid power When automobile enters hybrid mode, hybrid vehicle can also be switched to according to the instruction of user hybrid power economic model or Hybrid power motor pattern.A specific example according to the present invention can also be equipped with economic model key on hybrid vehicle With motor pattern key, user can pass through key manual switching to economic model or motor pattern.

In addition, in accordance with a preferred embodiment of the present invention, it, can be according to throttle when hybrid vehicle is in deceleration regime The states such as pedal starts, brake pedal and dynamical system carry out energy feedback, into energy feedback operating mode, wherein feedback Ratio carries out reasonable distribution according to demand braking force and adhesion of wheels ratio, guarantees the optimality of energy regenerating control.

According to one embodiment of present invention, when hybrid vehicle is in electric-only mode, judge whether to receive and use The pattern switching at family instructs, if it is, control hybrid vehicle switches to hybrid mode, wherein electric-only mode Including pure electric vehicle economic model and pure electric vehicle motor pattern, hybrid mode includes hybrid power economic model and hybrid power Motor pattern；If it is not, then judging whether the SOC (State of Charge, remaining capacity or state-of-charge) of power battery is small Whether it is less than or equal to the first predetermined power in the maximum discharge power for being equal to the first power threshold or power battery；Work as power battery SOC when being less than or equal to the maximum discharge power of the first power threshold or power battery and being less than or equal to the first predetermined power, control Hybrid vehicle switches to hybrid mode；When the SOC of power battery is greater than the first power threshold and power battery most When big discharge power is greater than the first predetermined power, control hybrid vehicle keeps electric-only mode.

A specific example according to the present invention can be equipped with electric-only mode key and hybrid power on hybrid vehicle Mode key, when hybrid vehicle is in electric-only mode, if user triggers hybrid mode key, control is mixed It closes power vehicle and switches to hybrid mode.It is, of course, understood that if user triggers electric-only mode key, Continue to control hybrid vehicle holding electric-only mode.

Specifically, as shown in figure 9, the control method of hybrid vehicle according to an embodiment of the invention includes Following steps:

S101: hybrid vehicle is in electric-only mode.

S102: judge whether to receive the pattern switching instruction of user, that is, judge whether to receive hybrid mode key Trigger signal.If so, thening follow the steps S103；If not, thening follow the steps S104.

S103: switching to hybrid mode, returns.

S104: judge whether the SOC (State of Charge, remaining capacity or state-of-charge) of power battery is less than Whether it is less than or equal to the first predetermined power Pb1 in the maximum discharge power Pb of the first power threshold SOC1 or power battery.If It is to then follow the steps S105；If not, thening follow the steps S106.

S105: switching to hybrid mode, returns.

S106: keeping electric-only mode, returns.

As a result, in the present embodiment, hybrid vehicle can be controlled according to the instruction of user to be switched to by electric-only mode Hybrid mode realizes manual switching operating mode, also, can also be according to the working condition of power battery automatically by pure electric vehicle Pattern switching guarantees hybrid vehicle to realize the manual switching and automatic switchover of operating mode to hybrid mode Work is in optimal state.

According to another embodiment of the invention, when hybrid vehicle is in hybrid mode, judge whether to connect The pattern switching instruction of user is received, if it is not, then control hybrid vehicle keeps hybrid mode；If it is, judgement Whether the SOC of power battery is greater than the first power threshold and whether the maximum discharge power of power battery is greater than the first default function Rate；When the maximum discharge power that the SOC of power battery is less than or equal to the first power threshold or power battery is less than or equal to first in advance If when power, control hybrid vehicle keeps hybrid mode；When the SOC of power battery is greater than the first power threshold and moves When the maximum discharge power of power battery is greater than the first predetermined power, control hybrid vehicle switches to electric-only mode.

Specifically, as shown in Figure 10, the control method of hybrid vehicle according to another embodiment of the invention The following steps are included:

S201: hybrid vehicle is in hybrid mode.

S202: judge whether to receive the pattern switching instruction of user, that is, judge whether to receive electric-only mode key Trigger signal.If so, thening follow the steps S204；If not, thening follow the steps S203.

S203: keeping hybrid mode, returns.

S204: judge whether the SOC (State of Charge, remaining capacity or state-of-charge) of power battery is greater than the Whether the maximum discharge power Pb of one power threshold SOC1 and power battery is greater than the first predetermined power Pb1.If it is, executing Step S205；If not, thening follow the steps S206.

S205: switching to electric-only mode, returns.

S206: keeping hybrid mode, returns.

It as a result, in the present embodiment, can be according to the instruction of user and the working state control hybrid power vapour of power battery Vehicle switches to electric-only mode by hybrid mode, manual switching operating mode is realized, to realize the manual of operating mode Switching guarantees hybrid vehicle work in optimal state.

According to still another embodiment of the invention, when hybrid vehicle enters electric-only mode, if hybrid power The current shift of automobile is non-P gear, wherein when the demand torque of hybrid vehicle is less than or equal to the volume of the first motor generator When determining the sum of the rated output torque of output torque and the second motor generator, the first motor generator and the second motor generator It is carried out according to the ratio between the rated output torque of the first motor generator and the rated output torque of the second motor generator Torque distribution；When the demand torque of hybrid vehicle is greater than the rated output torque and the second electronic hair of the first motor generator When the sum of rated output torque of motor, the first motor generator and the second motor generator are according to preset torque distribution principle Carry out torque distribution.

Further, after the first motor generator and the second motor generator carry out torque distribution, the first dynamoelectric and power generation The gear of machine is selected according to the speed of hybrid vehicle, wherein when the speed of hybrid vehicle is less than shift speed When, the first motor generator selects such as EV1 grades of the first gear；When the speed of hybrid vehicle is more than or equal to shift speed When, the first motor generator selects the second gear such as direct high.

Wherein, it should be noted that preset torque distribution principle is according to the first motor generator and the second electronic hair The principle that motor synchronizes the peak torque of the peak torque for reaching the first motor generator and the second motor generator is allocated.

Make the first motor generator as a result, with the second motor generator synchronize reach rated output torque or peak value is turned round Square gives full play to the first electricity to guarantee the consistent with temperature rise with the rate of load condensate of the second motor generator of the first motor generator Dynamic generator and the second motor generator ability.

Specifically, preset torque distribution principle determines the torque and second of the first motor generator according to the following formula The torque of motor generator:

Wherein, T is demand torque, and Tf is the torque for distributing to the first motor generator, and Tr is to distribute to the second electronic hair The torque of motor, Tfe are the rated output torque of the first motor generator, and Tre is that the rated output of the second motor generator is turned round Square, Tfp are the peak torque of the first motor generator, and Trp is the peak torque of the second motor generator.

According to above-mentioned calculating, the first motor generator also can be obtained and the second motor generator is distributed according to preset torque Principle carries out the allocation proportion Pro2, Pro2=Tf/Tr after torque distribution.

A specific embodiment according to the present invention, relation curve such as Figure 11 between the torque and revolving speed of motor generator It is shown, between the rated output torque T fe of the first motor generator and the first motor generator revolving speed in relation curve such as Figure 11 Shown in curve 1, relation curve is as schemed between the rated output torque T re of the second motor generator and the second motor generator revolving speed In 11 shown in curve 2, relation curve is as schemed between the peak torque Tfp of the first motor generator and the first motor generator revolving speed In 11 shown in curve 3, relation curve is as schemed between the peak torque Trp of the second motor generator and the second motor generator revolving speed In 11 shown in curve 4.As shown in Figure 11, Tfe, Tre, Tfp and Trp can be obtained according to revolving speed, and then calculate the difference of Tfp and Tfe, Such as the difference of Tfp-Tfe=153 and Trp and Tre, such as Trp-Tre=170.

In addition, it is necessary to explanation, demand torque can be determined according to the driving intention of driver, it is in general exactly to add Speed pedal aperture directly influences demand torque, and accelerator pedal aperture and the demand torque for taking turns end have direct relation, and then examine Consider wheel end and power source between speed ratio and transmission efficiency, can be obtained power source demand torque (such as the demand turn round Square T), wherein for electric-only mode, which is the demand torque of the first motor generator and the second motor generator；It is right For hybrid mode, which is that engine and/or the first motor generator and the common demand of the second motor generator are turned round Square.

Specifically, the demand torque for taking turns end can be obtained according to accelerator pedal aperture, and in economic model and movement mould Under formula, the relationship between accelerator pedal aperture and the demand torque at wheel end is different, i.e., in the economy mode, is being less than preset add When speed pedal opening value, the demand torque variation for taking turns end is relatively slow, i.e., the early period accelerated in vehicle, the demand torque for taking turns end becomes Change it is relatively slow, be greater than preset accelerator pedal opening value when, take turns end demand torque variation it is relatively fast, i.e., add in vehicle In the later period of speed, the demand torque variation for taking turns end is relatively fast, and the relationship between accelerator pedal aperture and the demand torque for taking turns end is bent Line embodies the economy of vehicle operation as shown in A-B2-C in Figure 12.In the sport mode, it is being less than preset accelerator pedal When opening value, the demand torque variation for taking turns end is relatively fast, i.e., the early period accelerated in vehicle, the demand torque variation for taking turns end is opposite Comparatively fast, when being greater than preset accelerator pedal opening value, the demand torque variation for taking turns end is relatively slow, i.e., after vehicle acceleration Phase, the demand torque variation for taking turns end is relatively slow, and the relation curve between accelerator pedal aperture and the demand torque for taking turns end is as schemed In 12 shown in A-B1-C, the dynamic property of vehicle acceleration is embodied.As a result, can by electric machine controller acquire accelerator pedal aperture and The operating mode of hybrid power vapour, and the demand torque at wheel end is determined according to accelerator pedal aperture and operating mode, and then examine Consider wheel end and the direct speed ratio of power source and transmission efficiency, determines the demand torque T of power source.

In addition, a specific embodiment according to the present invention, under electric-only mode, speed of shifting gears and hybrid vehicle Accelerator pedal aperture correlation.In other words, under electric-only mode, the gear of the first motor generator can be according to adding Speed pedal aperture and speed are selected, to meet driving intention, combine economy.Specifically, under electric-only mode Relation curve between accelerator pedal aperture and shift speed is as shown in figure 13.Electric machine controller can acquire accelerator pedal as a result, Aperture, and shift speed is determined according to accelerator pedal aperture, and according to shift speed and speed selection the first motor generator Gear.

In addition, according to still another embodiment of the invention, power drive system further includes motor power axis synchronizer, motor Line shaft first gear and motor power axis second gear, motor power axis synchronizer with motor power axis first gear and electricity During one in mechanomotive force axis second gear engagement is switched to and engages with another, the first motor generator is arranged to motor Another revolving speed in line shaft first gear and motor power axis second gear is that target adjusts the speed motor power axis, So that the gear of the first motor generator switches between the first gear and the second gear.

Wherein, the difference of the first gear and the second gear is embodied in speed ratio, power drive system through this embodiment 2 kinds of speed ratios are formed, different speed ratios can change the revolving speed of the first motor generator and the output torque at wheel end.When speed is smaller When, it selects the first gear (i.e. large speed ratio gear), meets the demand of the larger output torque of hybrid vehicle, while improving the The revolving speed of one motor generator, to improve the business efficiency of the first motor generator；When speed is higher, the second gear is selected (i.e. small speed ratio gear), reduce the first motor generator revolving speed, make the first motor generator work suitable, economy compared with Good revolving speed section work.Wherein, the speed ratio of the first gear is greater than the speed ratio of the second gear.

The first motor generator can realize the automatic switchover of 2 grades of gears as a result, thus, mixing was dynamic when both ensure that low speed The large torque demand of power automobile, but motor generator revolving speed is not too high when can guarantee high speed, while can also improve well The working efficiency of one motor generator.

Specifically, as shown in figure 14, the control method of hybrid vehicle according to still another embodiment of the invention The following steps are included:

S301: hybrid vehicle is in electric-only mode.

S302: judge whether to receive economy/motor pattern switching command of user.If receiving economic model switching to refer to It enables, thens follow the steps S303；If receiving motor pattern switching command, S308 is thened follow the steps.

S303: enter pure electric vehicle economic model.Wherein, according to curve A- in accelerator pedal aperture and Figure 12 under economic model B2-C determines wheel end demand torque, and then the demand torque T of hybrid vehicle.

S304: whether the current shift for judging hybrid vehicle is non-P gear.If so, thening follow the steps S305；If No, then current shift is P gear, hybrid vehicle parking.

S305: judge that the demand torque T of hybrid vehicle is less than or equal to the rated output torque of the first motor generator The sum of the rated output torque T re of Tfe and the second motor generator T1, i.e. T1=Tfe+Tre.If so, thening follow the steps S306；If not, thening follow the steps S307.

S306: the first motor generator and the second motor generator are turned round according to the ratio Pro1 of its rated output torque The gear of square distribution, the first motor generator is selected according to the speed and shift speed of hybrid vehicle.

Wherein, ratio Pro1 is to synchronize to reach rated output torque according to the first motor generator and the second motor generator Principle be allocated after obtain, i.e. ratio Pro1 is that the rated output torque T fe and second of the first motor generator is electronic The ratio between rated output torque T re of generator.The shift speed of first gear and the second gear is as shown in figure 13, when speed is less than When speed of shifting gears, the first motor generator selects the first gear；Conversely, then selecting the second gear.

S307: the first motor generator and the second motor generator carry out torque distribution according to allocation proportion Pro2, and first The gear of motor generator is selected according to the speed and shift speed of hybrid vehicle.

Wherein, allocation proportion Pro2 is that the first motor generator and the second motor generator synchronize the original for reaching peak torque It is obtained after being then allocated.The shift speed of first gear and the second gear is as shown in figure 13, when speed is less than shift vehicle When fast, the first motor generator selects the first gear；Conversely, then selecting the second gear.

S308: enter pure electric vehicle motor pattern.

Pure electric vehicle motor pattern control strategy and step S304 to S307 are almost the same, and which is not described herein again.Wherein, different Place is, the variation of the demand torque of the change curve and economic model lower whorl end of the demand torque at the wheel end under motor pattern Curve is different, determines the demand torque at wheel end under motor pattern according to curve A-B1-C in accelerator pedal aperture and Figure 12, in turn Determine the demand torque T of hybrid vehicle.

As a result, in the present embodiment, under electric-only mode, can according to demand torque to the first motor generator and first Motor generator carries out torque distribution, and the first motor generator can be realized gear and automatically switch (2 grades), thus, to hair The output of motivation and motor generator carries out reasonable distribution, and hybrid vehicle can be made to have good passability, economy, turn Tropism, handling and cross-country ability, promote the experience of user.Also, the advantages of giving full play to series model and paralleling model is being protected On the basis of demonstrate,proving hybrid electric vehicle power, engine and motor generator is made all to work in preferable economic zone.

In addition, the first motor generator can be front motor in the embodiment of the present invention, the second motor generator can be rear electricity Machine.

Still another embodiment in accordance with the present invention, when hybrid vehicle enters hybrid mode, if mixing is dynamic The current shift of power automobile is non-P gear, wherein when the SOC of power battery is more than or equal to 0 and when less than the first power threshold, control Hybrid vehicle processed is run in a manner of the low battery under hybrid mode；When the SOC of power battery is more than or equal to the first electricity Measure threshold value and when less than the second power threshold, control hybrid vehicle is run in a manner of the middle electricity under hybrid mode； When the SOC of power battery is more than or equal to the second power threshold, hybrid vehicle is controlled with the height electricity under hybrid mode Amount mode is run.

Further, if the current shift of hybrid vehicle is P gear, according to the speed and power of hybrid vehicle The SOC control hybrid vehicle of battery carries out power generation in parking.

Specifically, it can judge whether control mixing according to the dead ship condition of hybrid vehicle and the SOC of power battery Power vehicle carries out power generation in parking, i.e., when current shift is that P is kept off and speed is equal to default parking vehicle velocity V 0 and the SOC of power battery When less than or equal to default parking charge capacity value SOC0, control hybrid vehicle carries out power generation in parking, is carrying out power generation in parking During, also the SOC of power battery is detected, is increased to preset stopping parking charge capacity in the SOC of power battery When value SOC10, stop carrying out power generation in parking.As a result, in parking, the electricity of power battery is supplemented, improves power electric The discharge power in pond, thus, guarantee power performance when hybrid electric vehicle start, when hybrid vehicle starts starting, Vehicle can be started to walk by electric-only mode, avoid the oil consumption upper zone of engine starting stage, improve economy, the row of reduction It puts；The characteristic of large torque when can also play motor generator low speed simultaneously, the power performance for making vehicle start to walk are improved；Also The hill start ability that vehicle can be improved, by under pure fuel oil mode can not by ramp；It can also generate electricity in parking and give other vehicles Electrical appliance uses.

Wherein, it should be noted that when motor power axis is linked with one in input shaft, the first dynamoelectric and power generation Machine can be sailed using at least partly power exported from engine in hybrid electric vehicle and when parking generates electricity.

Specifically, as shown in figure 15, the control method of the hybrid vehicle of still another embodiment in accordance with the present invention The following steps are included:

S401: hybrid vehicle is in hybrid mode.

S402: judge whether to receive economy/motor pattern switching command of user, that is, trigger economic key.If received To economic model switching command, S403 is thened follow the steps；If receiving motor pattern switching command, S412 is thened follow the steps.

S403: enter hybrid power economic model.

Wherein, economic model more focuses on the economy of running car while guaranteeing power performance.Hybrid power warp Ji mode includes low speed pure electric vehicle mode, i.e., in low speed, engine has the state not driven to hybrid vehicle, Engine oil-break or shutdown (such as braking, accelerator releasing operating condition) in the state of not driving；First motor generator is according only to vehicle Speed selection gear (when speed is less than or equal to the first preset vehicle speed, the first gear is selected, conversely, the second gear is then selected, In, the first preset vehicle speed can be definite value)；The demand torque variation for taking turns end is relatively slow, according in accelerator pedal aperture and Figure 12 Curve A-B2-C determines the demand torque at wheel end, and then determines the demand torque T of hybrid vehicle.

S404: judge whether current gear is P grades non-according to the gear signal detected.If so, thening follow the steps S405；If not, thening follow the steps S413.

S405: current gear is non-P grades, judges the range where power battery SOC.If the SOC of power battery is greater than Equal to 0 and less than the first power threshold SOC1, S406 is thened follow the steps；If the SOC of power battery is more than or equal to the first electricity Threshold value SOC1 and less than the second power threshold SOC2, thens follow the steps S408；If the SOC of power battery is more than or equal to the first electricity Threshold value SOC21 is measured, S410 is thened follow the steps.

S406: judge that the SOC of power battery is more than or equal to 0 and less than the first power threshold SOC1.

S407: control hybrid vehicle is run in a manner of the low battery under hybrid power economic model.At this point, power electric The SOC in pond is in lower value, and engine suitably increases generated energy under the premise of guaranteeing dynamic property, economy, guarantees power electric There is certain surplus in pond, in case exporting when automobile significant power demand.

S408: judge that the SOC of power battery is more than or equal to the first power threshold SOC1 and less than the second power threshold SOC2. Wherein, SOC2 is greater than SOC1.

S409: control hybrid vehicle is run in a manner of the middle electricity under hybrid power economic model.At this point, power electric The SOC in pond is in suitable interval, and in order to allow electric quantity balancing in this range, the generated energy of engine need to be protected with electronic power consumption Maintain an equal level weighing apparatus.

S410: judge that the SOC of power battery is more than or equal to the second power threshold SOC2.

S411: control hybrid vehicle is run in a manner of the high electricity under hybrid power economic model.At this point, power electric The SOC in pond is in high value, needs motor generator variety of priority driven automobile, the SOC of power battery is made to drop to suitable interval, in case The storage of the operating conditions such as automobile brake feeding amount next time.

S412: enter hybrid power motor pattern.

The control strategy of hybrid power motor pattern and step S405 to S411 are almost the same, and which is not described herein again.Wherein, The difference is that: hybrid power motor pattern does not have low speed pure electric vehicle mode, i.e. engine always drives automobile； First motor generator according to the current gear and speed of engine carry out gear shift, i.e., the current gear of engine be low-grade location and When speed is lower, the first gear is selected, conversely, the second gear of selection；The demand torque and economic mould at the wheel end under motor pattern The demand torque at formula lower whorl end is different, determines wheel end according to curve A-B1-C in accelerator pedal aperture and Figure 12 under motor pattern Demand torque, and then determine the demand torque T of hybrid vehicle.

S413: current gear is P grades, judges whether to control according to the SOC of the speed of hybrid vehicle and power battery Hybrid vehicle carries out power generation in parking, to supplement in parking the electricity of power battery, guarantees hybrid power vapour The power consumption of power performance and vehicular electrical appliance when vehicle is started to walk.

Specifically, the control method of 6 pairs of power generation in parking is described in detail referring to Fig.1.

S1301: judge whether the SOC of power battery is less than or equal to default parking charge capacity value SOC0.If it is, holding Row step S1302；If it is not, then exiting, without power generation in parking.

S1302: judge whether the speed of hybrid vehicle is equal to default parking vehicle velocity V 0.If so, thening follow the steps S1303；If it is not, then exiting, without power generation in parking.

Wherein, presetting parking vehicle velocity V 0 can be 0.

S1303: whether the current gear for judging hybrid vehicle is P grades or EPB (Electrical Park Brake, electronic brake system) whether it is pulled up.If so, thening follow the steps S1304；If it is not, then exit, without Power generation in parking.

S1304: control hybrid vehicle carries out power generation in parking.It is performed simultaneously step S1305 and step S1306.

S1305: the power generation in parking power signal that electric machine controller is sent to engine control module, engine control module Engine is controlled, i.e., control engine drives the first motor generator to generate electricity according to preset generated output.

S1306: the parking power generation gear signal that electric machine controller is sent to shift change controller controls speed changer System controls motor power axis synchronizer combination motor power axis first gear, to realize the energy transmission of power generation in parking.

As a result, when controlling hybrid vehicle progress power generation in parking, sent out according to preset power generation in parking revolving speed and parking Electrical power, the revolving speed of the first motor generator is first adjusted to motor power axis synchronizer can be with motor power axis first gear knot The revolving speed of conjunction, so that motor power axis synchronizer is smoothly combined with motor power axis first gear, in motor power axis synchronizer When in conjunction with motor power axis first gear, the first motor generator passes through motor power axis synchronizer, the first tooth of motor power axis Wheel, intermediate idler, the second input shaft are connected with engine, and then the revolving speed of the first motor generator is adjusted to preset stay Vehicle power generation revolving speed, while engine is dragged to the revolving speed synchronous with the first motor generator, so that engine is according to preset hair Electrical power drives the first motor generator to generate electricity, and the first motor generator makes other vehicular electrical appliances of the energy supply of power generation With, while also storing electric energy into power battery.

S1307: judge whether the SOC of power battery is less than or equal to preset stopping parking charge capacity value SOC10.If It is to then follow the steps S1302；If it is not, then exiting, without power generation in parking.As a result, in the present embodiment, in hybrid power Under mode, according to the SOC of power battery control hybrid vehicle in a manner of low battery, middle electricity mode or high electricity mode transport Row, thus, reasonable distribution is carried out to the output of engine and motor generator, on the basis for guaranteeing hybrid electric vehicle power On, so that engine and motor generator is all worked in preferable economic zone.

A specific embodiment according to the present invention, when hybrid vehicle is in a manner of the high electricity under hybrid mode When operation, wherein if the speed of hybrid vehicle is less than or equal to the maximum electric discharge function of the first preset vehicle speed and power battery Rate is greater than the first predetermined power, judges whether the demand torque of hybrid vehicle is less than or equal to the specified of the first motor generator The sum of output torque and the rated output torque of the second motor generator；If so, the first motor generator and the second electronic hair Motor is according to the ratio between the rated output torque of the first motor generator and the rated output torque of the second motor generator Torque distribution is carried out, and the first motor generator selects the first gear；If not, the first motor generator and the second electronic hair Motor carries out torque distribution according to preset torque distribution principle, and the first motor generator selects the first gear.

Wherein, it should be noted that the first preset vehicle speed can be the upper limit speed in congestion road conditions.First predetermined power master If the limited operating condition of the discharge power for embodying power battery, wherein temperature of powered cell is too low or excessively high will affect power The discharge power of battery.

Further, when the speed of hybrid vehicle is less than or equal to the maximum electric discharge of the first preset vehicle speed and power battery When power is less than or equal to the first predetermined power, the first motor generator and the are first controlled according to the demand torque of hybrid vehicle Two motor generators carry out torque distribution, wherein if being assigned to the torque of the first motor generator and the second motor generator Respectively more than the peak torque of the first motor generator and the second motor generator,, then control engine and supply torque with first Tb carries out torque output, wherein and Tb=T-Tfp-Trp, T are demand torque, and Tfp is the peak torque of the first motor generator, Trp is the peak torque of the second motor generator, wherein the first motor generator selects the first gear.

Further, when the speed of hybrid vehicle is greater than the first preset vehicle speed, according to the need of hybrid vehicle It asks torque first to control engine and carries out torque distribution until the torque for being assigned to engine reaches preset economic torque, then controls First motor generator and the second motor generator supply torque T c with second and carry out torque output, wherein Tc=T-T2, T are Demand torque, T2 are preset economic torque, wherein if being assigned to the torsion of the first motor generator and the second motor generator Square is respectively more than the peak torque of the first motor generator and the second motor generator, then controls engine and supply torque with first Tb carries out torque output, wherein and Tb=T-Tfp-Trp, T are demand torque, and Tfp is the peak torque of the first motor generator, Trp is the peak torque of the second motor generator；Wherein, the first motor generator selects the second gear.

It follows that needing motor generator variety of priority driven hybrid power vapour when the SOC of power battery is in high value Vehicle makes the SOC of power battery drop to suitable interval, in case the storage of the operating conditions such as automobile brake feeding amount next time.

Specifically, as shown in figure 17, it is according to the present invention when hybrid vehicle is in hybrid power economic model The control method of the hybrid vehicle of one specific embodiment the following steps are included:

S501: hybrid vehicle is run in a manner of high electricity.

S502: detecting the speed of hybrid vehicle, and judges whether the speed of hybrid vehicle is less than or equal to first Preset vehicle speed V1.If so, thening follow the steps S503；If so, thening follow the steps S509.

Wherein, the first preset vehicle speed V1 is the pre-set velocity value run in a manner of low speed pure electric vehicle, when speed is less than or equal to First preset vehicle speed V1, control hybrid vehicle are run in a manner of low speed pure electric vehicle.

S503: detecting the maximum discharge power Pb of power battery, judges whether the maximum discharge power Pb of power battery is small In equal to the first predetermined power Pb1.If so, thening follow the steps S504；If so, thening follow the steps S506.

S504: obtaining demand torque T, first controls the first motor generator and the second motor generator while carrying out torque point Match, and the first motor generator selects the first gear.

Specifically, the distribution of the torque of the first motor generator and the second motor generator follows while to reach its specified defeated The principle of torque and peak torque out carries out torque distribution according to allocation proportion Pro1 or Pro2, specifically refers to pure electric vehicle Torque distribution under mode.

S505: when being assigned to the torque of the first motor generator and the second motor generator respectively more than the first dynamoelectric and power generation When the peak torque of machine and the second motor generator, then control engine with first supply torque T-Tfp-Trp carry out torque it is defeated Out.

In other words, if demand torque T is greater than the peak torque Tfp of the first motor generator and the peak of the second motor generator It is worth the sum of torque T rp, then controls engine with T-Tfp-Trp and carry out torque output.

S506: judge that the demand torque T of hybrid vehicle is less than or equal to the rated output torque of the first motor generator The sum of the rated output torque T re of Tfe and the second motor generator T1, i.e. T1=Tfe+Tre.If so, thening follow the steps S507；If not, thening follow the steps S508.

Wherein, first it can determine that the demand at wheel end is turned round according to curve A-B2-C in accelerator pedal aperture and Figure 12 under economic model Square determines the demand torque T of hybrid vehicle further according to the speed ratio and transmission efficiency taken turns between end and power source.

S507: the first motor generator and the second motor generator are turned round according to the ratio Pro1 of its rated output torque Square distribution, the first motor generator select the first gear.

Wherein, ratio Pro1 is to synchronize to reach rated output torque according to the first motor generator and the second motor generator Principle be allocated after obtain, i.e. ratio Pro1 is that the rated output torque T fe and second of the first motor generator is electronic The ratio between rated output torque T re of generator.

S508: the first motor generator and the second motor generator carry out torque distribution according to allocation proportion Pro2, and first Motor generator selects the first gear.

Wherein, allocation proportion Pro2 is that the first motor generator and the second motor generator synchronize the original for reaching peak torque It is obtained after being then allocated, allocation proportion Pro2=Tf/Tr, wherein Tf/Tr is calculated according to the following formula:

S509: it first controls engine and carries out torque distribution, when the torque for being assigned to engine reaches preset economic torque It when T2, then controls the first motor generator and the second motor generator and torque distribution is carried out with T-T2, wherein the first dynamoelectric and power generation Machine selects the second gear.

Wherein, the curve synoptic diagram as shown in figure 18 between engine torque and engine speed.Preset economic torsion Square T2 can according in Figure 18 torque curve 1 and engine speed determine, economic torque T 2 be engine operation in economic section Upper limited torque.

S510: when being assigned to the torque of the first motor generator and the second motor generator respectively more than the first dynamoelectric and power generation When the peak torque of machine and the second motor generator, engine is controlled with T-Tfp-Trp and carries out torque output.

Wherein, above-mentioned steps S503 to S508 is the low speed pure electric vehicle mode in hybrid mode.Using the pure electricity of low speed Flowing mode can evade the poor region of engine economy, and power consumption is smaller when low speed, the electricity fluctuation of power battery compared with It is small, when road compares congestion, reduce the operating condition of engine idling.

In addition, it is necessary to explanation, when hybrid vehicle is in hybrid power motor pattern, hybrid power moves mould Formula is not controlled hybrid vehicle and is run in a manner of low speed pure electric vehicle, i.e., if control hybrid vehicle is transported in a manner of high electricity Row, then directly execute step S509, and control engine carries out always torque output.

It as a result, in the present embodiment, can be according to hybrid vehicle when hybrid vehicle is run in a manner of high electricity Demand torque, speed and power battery working state control engine carry out the first dynamoelectric and power generation of torque distribution and control Machine and the second motor generator carry out torque distribution simultaneously, and according to the gear of the first motor generator of speed selection.To right The output of engine and motor generator carries out reasonable distribution, can make hybrid vehicle have good passability, economy, Steering property, handling and cross-country ability, promote the experience of user.Also, the advantages of giving full play to series model and paralleling model, On the basis of guaranteeing hybrid electric vehicle power, engine and motor generator is made all to work in preferable economic zone.

Another specific embodiment according to the present invention, when hybrid vehicle is with the middle electricity side under hybrid mode When formula is run, wherein if the speed of hybrid vehicle is less than or equal to the first preset vehicle speed, control hybrid vehicle with low Fast pure electric vehicle mode is run；If the speed of hybrid vehicle is greater than the first preset vehicle speed, the need of hybrid vehicle are judged Ask whether torque is less than or equal to preset engine torque；If so, control engine is turned round according to the demand of hybrid vehicle Square carries out torque distribution, and controls engine and drive the first motor generator to carry out power generation in parallel with the second predetermined power, wherein First motor generator selects the second gear；If not, control engine is exported with preset engine torque, and according to The surplus torque Td control engine of engine is to drive the first motor generator to carry out power generation in parallel, wherein Td=T3-T ', T3 is preset engine torque, and T ' is Hybrid Vehicle in the demand torque of driving；If Hybrid Vehicle in The demand torque of driving is greater than preset engine torque, then controls engine and carry out output torque to meet hybrid vehicle For the demand torque of driving, if being still unsatisfactory for the driving demand of hybrid vehicle, control the first genemotor and Second genemotor output torque is to meet Hybrid Vehicle in the demand torque of driving.As a result, when power battery When SOC is in suitable interval, in order to allow electric quantity balancing, the generated energy of engine need to be protected with electronic power consumption within this range Maintain an equal level weighing apparatus.

Specifically, as shown in figure 19, it is according to the present invention when hybrid vehicle is in hybrid power economic model The control method of the hybrid vehicle of another specific embodiment the following steps are included:

S601: hybrid vehicle is run in a manner of middle electricity.

S602: detecting the speed of hybrid vehicle, and judges whether the speed of hybrid vehicle is less than or equal to first Preset vehicle speed V1.If so, thening follow the steps S603；If so, thening follow the steps S604.

S603: control hybrid vehicle is run in a manner of low speed pure electric vehicle.The step of executing described in Figure 17 S503 to S507.

S604: demand torque T is obtained, judges whether the demand torque of hybrid vehicle is less than or equal to preset engine Torque T 3.If so, thening follow the steps S605；If not, thening follow the steps S606.

Wherein, under hybrid mode, demand torque T is the demand torque of engine, and demand torque T includes driving the One motor generator carries out the torque of power generation in parallel, as a result, in the economy mode can be first according in accelerator pedal aperture and Figure 12 Curve A-B2-C determines the demand torque at wheel end, determines further according to the speed ratio and transmission efficiency etc. taken turns between end and transmitter mixed Close the demand torque T of power vehicle.In addition preset engine torque T3 can be according to the torque curve 2 and engine turn in Figure 18 Speed determines.

S605: torque T carries out torque output to control engine as desired, and controls the first motor generator selection second Gear.

Specifically, control engine driving hybrid electric vehicle is sailed, while controlling engine with the second predetermined power P1 The first motor generator is driven to carry out power generation in parallel.That is, a part of demand torque T of engine output is mixed for driving Power vehicle traveling is closed, another part demand torque T is for driving the first motor generator to carry out power generation in parallel.

Wherein, the second predetermined power P1 is the generated output of engine, and the second predetermined power P1 can working as by power battery Difference, that is, SOC deviation between preceding SOC and equalization point electricity determines, is as shown in figure 20 SOC deviation and engine power generation power Relation curve schematic diagram.

S606: judge that Hybrid Vehicle is greater than preset engine torque T in the demand torque T ' of driving.If It is to then follow the steps S608；If not, thening follow the steps S607.

S607: control engine is exported with preset engine torque T3, while being controlled engine and being carried out parallel connection with T3-T ' Power generation, and control the first motor generator and select the second gear.

Wherein, it should be noted that when preset engine torque T3 is equal with the demand torque T ' for driving, then not Carry out power generation in parallel.

S608: control engine carries out output torque to meet Hybrid Vehicle in the demand torque T ' of driving, such as Fruit is still unsatisfactory for the driving demand of hybrid vehicle, then controls the first genemotor and the second genemotor output torque To meet Hybrid Vehicle in the demand torque T ' of driving.

Specifically, control engine driving hybrid electric vehicle sail, while by preset engine torque T3 with mix Demand torque T ' of the power vehicle for driving is compared, if T3 is greater than T ', controls engine with preset engine Torque T 3 exports, while driving the first motor generator to carry out power generation in parallel with the surplus torque of engine, that is, T3-T ', and will be electric It can store to power battery；If T3 is less than being short of power for T ' i.e. engine, first controls engine progress torque and supplies, In, if torque T needed for driving running car ' more than the external characteristics of engine, i.e., independent engine driving is unable to satisfy mixed The driving demand for closing power vehicle, then control the first motor generator and the second motor generator again while carrying out torque and supply； If T3 is equal to T ', engine is controlled with preset engine torque T3 and only drives running car.

In addition, it is necessary to explanation, when hybrid vehicle is in hybrid power motor pattern, hybrid power moves mould Formula is not controlled hybrid vehicle and is run in a manner of low speed pure electric vehicle, i.e., if control hybrid vehicle is transported in a manner of middle electricity Row, then execute since step S604, and control engine carries out always torque output.

It as a result, in the present embodiment, can torque and vehicle according to demand when hybrid vehicle is run in a manner of middle electricity Speed control engine carries out torque distribution and controls the first motor generator of engine driving progress power generation in parallel, and according to speed The gear of the first motor generator is selected, and controls the first motor generator when being short of power and the second motor generator is same Shi Jinhang torque supplement.To carry out reasonable distribution to the output of engine and motor generator, hybrid vehicle can be made to have There are good passability, economy, steering property, handling and cross-country ability, promotes the experience of user.Also, give full play to series connection The advantages of mode and paralleling model, makes engine and motor generator all on the basis of guaranteeing hybrid electric vehicle power Work is in preferable economic zone.

Another specific embodiment according to the present invention, when hybrid vehicle is with the low battery side under hybrid mode When formula is run, wherein if the speed that the SOC of power battery is greater than third power threshold and hybrid vehicle is less than or equal to the One preset vehicle speed, control hybrid vehicle are run in a manner of low speed pure electric vehicle；If the SOC of power battery is greater than third electricity Threshold value and the speed of hybrid vehicle are greater than the first preset vehicle speed, judge whether the demand torque of hybrid vehicle is less than In preset engine torque；If so, control engine carries out torque distribution according to the demand torque of hybrid vehicle, and It controls engine and drives the first motor generator to carry out power generation in parallel with the second predetermined power, wherein the choosing of the first motor generator Select the second gear；If not, control engine is exported with preset engine torque, and according to the surplus torque of engine Td controls engine to drive the first motor generator to carry out power generation in parallel, wherein Td=T3-T ', T3 are preset engine Torque, T ' are Hybrid Vehicle in the demand torque of driving；If Hybrid Vehicle is big in the demand torque of driving In preset engine torque, then controls engine and carry out output torque to meet Hybrid Vehicle in the needs of driving and turn round Square controls the first genemotor and the second genemotor is defeated if being still unsatisfactory for the driving demand of hybrid vehicle Torque is out to meet Hybrid Vehicle in the demand torque of driving.

Further, when the SOC of power battery is less than or equal to third power threshold, wherein if hybrid vehicle Speed be less than or equal to the second preset vehicle speed, then control engine with third predetermined power drive the first motor generator gone here and there Connection power generation, and electric energy is supplied into the second motor generator and is used to drive traveling.

Further, if the speed of hybrid vehicle is greater than the second preset vehicle speed, judge the need of hybrid vehicle Ask whether torque is less than or equal to preset engine torque；If so, control engine is turned round according to the demand of hybrid vehicle Square carries out torque distribution, and controls engine and drive the first motor generator to carry out power generation in parallel with the second predetermined power；If It is no, control engine exported with preset engine torque, and according to the surplus torque Td of engine control engine with The first motor generator is driven to carry out power generation in parallel, wherein Td=T3-T ', T3 are preset engine torque, and T ' is that mixing is dynamic Demand torque of the power automobile for driving；If Hybrid Vehicle is turned round in the demand torque of driving greater than preset engine Square then controls engine and carries out output torque to meet Hybrid Vehicle in the demand torque of driving, if be still unsatisfactory for The driving demand of hybrid vehicle controls the first genemotor and the second genemotor output torque then to meet mixing Demand torque of the power vehicle for driving.Also, when the speed of hybrid vehicle is less than shift speed, the first electronic hair The first gear of selection of Motor, when the speed of hybrid vehicle is more than or equal to shift speed, the first motor generator selection the Two gears.Wherein, need to illustrate when, the shift speed of the present embodiment is with a definite value.

Specifically, as shown in figure 21, it is according to the present invention when hybrid vehicle is in hybrid power economic model The control method of the hybrid vehicle of another specific embodiment the following steps are included:

S701: hybrid vehicle is run in a manner of low battery.

S702: judge whether the SOC of power battery is greater than third power threshold SOC3.If so, thening follow the steps S703； If not, thening follow the steps S710.

Wherein, SOC3 is less than SOC1.

S703: judge whether the speed of hybrid vehicle is less than or equal to the first preset vehicle speed V1.If it is, executing step Rapid S704；If not, thening follow the steps S705.

S704: control hybrid vehicle is run in a manner of low speed pure electric vehicle.

S705: demand torque T is obtained, judges whether the demand torque of hybrid vehicle is less than or equal to preset hair Motivation torque T 3.If so, thening follow the steps S706；If not, thening follow the steps S707.

S706: torque T carries out torque output to control engine as desired, and controls the first motor generator selection second Gear.

Specifically, control engine driving hybrid electric vehicle is sailed, while with the first electricity of the second predetermined power P1 driving Dynamic generator carries out power generation in parallel.That is, a part of demand torque T of engine output is for driving hybrid vehicle Traveling, another part demand torque T is for driving the first motor generator to carry out power generation in parallel.

S707: judge present hybrid automobile for driving demand torque T ' greater than preset engine torque T.Such as Fruit is to then follow the steps S709；If not, thening follow the steps S708.

S708: control engine is exported with preset engine torque T3, while controlling engine with surplus torque T3-T ' Power generation in parallel is carried out, and controls the first motor generator and selects the second gear.

S709: control engine carries out output torque to meet Hybrid Vehicle in the demand torque T ' of driving, such as Fruit is still unsatisfactory for the driving demand of hybrid vehicle, then controls the first genemotor and the second genemotor output torque To meet Hybrid Vehicle in the demand torque T ' of driving.

Specifically, control engine driving hybrid electric vehicle sail, while by preset engine torque T3 with mix Demand torque T ' of the power vehicle for driving is compared, if T3 is greater than T ', controls engine with preset engine Torque T 3 exports, while driving the first motor generator to carry out power generation in parallel with the surplus torque of engine, that is, T3-T ', and will be electric It can store to power battery；If T3 is less than being short of power for T ' i.e. engine, first controls engine progress torque and supplies, In, if torque T needed for driving running car ' more than the external characteristics of engine, i.e., independent engine driving is unable to satisfy mixed The driving demand for closing power vehicle, then control the first motor generator and the second motor generator again while carrying out torque and supply； Engine is controlled if T3 is equal to T ', and running car is driven with preset engine torque T3.

S710: judge whether the speed of hybrid vehicle is less than or equal to the second preset vehicle speed V2.If it is, executing step Rapid 711；If not, thening follow the steps 712.

Wherein, the second preset vehicle speed V2 is the max speed value under preset series model；

S711: control engine drives the first motor generator to carry out power generation cascade with third predetermined power P2, and will be electric Can supply the second motor generator for drive traveling.

Specifically, by electric energy the second motor generator of supply of power generation cascade to drive hybrid electric vehicle to sail use, Electric energy E ' needed for the electric energy E of power generation cascade is driven running car with the second motor generator is compared, if E is greater than E ' Then the i.e. E-E ' of the electric energy having more is stored to power battery, the second motor generator is operated alone hybrid electric vehicle and sails；Such as Fruit E is less than E ' and is short of power (peak torque that torque needed for running car is more than the second motor generator), then controls hair Motivation is exported with external characteristics, if there is the surplus torque of engine, then drives the first dynamoelectric and power generation with the surplus torque of engine Machine carries out power generation in parallel, if being short of power for unpowered surplus torque and engine, controls the first motor generator Torque is carried out simultaneously with the second motor generator to supply.

Wherein, third predetermined power P2 is preset series model generated output, and third predetermined power P2 can be definite value.

S712: demand torque T is obtained, it is preset to judge whether the demand torque T of hybrid vehicle is less than or equal to Engine torque T3.If so, thening follow the steps S713；If not, thening follow the steps S714.

Wherein, demand torque T includes the torque for driving the first motor generator to carry out power generation in parallel, as a result, in economic mould The demand torque that can first determine wheel end under formula according to curve A-B2-C in accelerator pedal aperture and Figure 12, further according to wheel end and sends Speed ratio and transmission efficiency between machine etc. determine the demand torque T of hybrid vehicle.In addition preset engine torque T3 It can be determined according to the torque curve 2 and engine speed of Figure 18.

S713: torque T carries out torque output to control engine as desired, while controlling engine with the second predetermined power P1 drives the first motor generator to carry out power generation in parallel, and the gear of the first motor generator is selected according to preset shift speed It selects.

Specifically, control engine is sailed with demand torque T driving hybrid electric vehicle, while controlling engine with second Predetermined power P1 drives the first motor generator to carry out power generation in parallel.That is, a part of demand torque T of engine output For driving hybrid electric vehicle to sail, another part demand torque T is for driving the first motor generator to carry out power generation in parallel.

S714: judge present hybrid automobile for driving demand torque T ' greater than preset engine torque T.Such as Fruit is to then follow the steps S716；If not, thening follow the steps S715.

S715: control engine is exported with preset engine torque T3, while controlling engine with surplus torque T3-T ' Power generation in parallel is carried out, the gear of the first motor generator is selected according to preset shift speed.

S716: control engine carries out output torque to meet Hybrid Vehicle in the demand torque T ' of driving, such as Fruit is still unsatisfactory for the driving demand of hybrid vehicle, then controls the first genemotor and the second genemotor output torque To meet Hybrid Vehicle in the demand torque T ' of driving.

Specifically, control engine driving hybrid electric vehicle sail, while by preset engine torque T3 with mix Demand torque T ' of the power vehicle for driving is compared, if T3 is greater than T ', controls engine with preset engine Torque T 3 exports, while driving the first motor generator to carry out power generation in parallel with the surplus torque of engine, that is, T3-T ', and will be electric It can store to power battery；If first controlling engine if T3 is less than being short of power for T ' i.e. engine and carrying out torque benefit Foot, wherein if torque T needed for driving running car ' more than the external characteristics of engine, i.e., independent engine driving can not expire The driving demand of sufficient hybrid vehicle then controls the first motor generator and the second motor generator again while carrying out torque benefit Foot；If T3 is equal to T ', engine is controlled with preset engine torque T3 and drives running car.

In addition, it is necessary to explanation, when hybrid vehicle is in hybrid power motor pattern, hybrid power moves mould Formula is not controlled hybrid vehicle and is run in a manner of low speed pure electric vehicle, i.e., if control hybrid vehicle is transported in a manner of low battery Row, then if step S702 judges that the SOC of power battery is greater than third power threshold SOC3, directly execution step S705, and Step S703 and S704 are not executed, but also are controlled engine and carried out torque output always.Also, the first motor generator according to The current gear and speed of engine carry out gear shift, rather than hybrid power economic model carries out gear shift according only to speed, that is, works as When the current gear of engine is lower than default low-grade location such as third gear and speed less than or equal to preset shift speed, first is selected Gear；When the current gear of engine is higher than default low-grade location or speed is greater than preset shift speed, the second gear is selected.

A specific embodiment according to the present invention can pass through gear controller SCU, electric machine controller as shown in figure 22 ECN, battery management system BMS, vehicle body stability controller ESC, electronic parking system EPB, motion control unit TCU, engine Information exchange between controller ECM and combination instrument realizes the control of the hybrid vehicle of the embodiment of the present invention.

As shown in figure 22, gear controller SCU is for acquiring current gear signal, and sends the signal to electric machine controller ECN；Battery management system BMS sends the signal to electricity for acquiring the signals such as SOC, the maximum discharge power of power battery Machine controller ECN, and execute battery cell monitoring, management strategy；Vehicle body stability controller ESC sends speed signal to electric machine controller ECN；Electronic parking system EPB sends EPB status signal to electric machine controller ECN；Electric machine controller ECN is to the vehicle received The signals such as mode, accelerator pedal aperture, brake pedal aperture are verified and are executed power generation in parking, speed regulation gear shift and execute driving Control strategy, and the signals such as motor generator target gear, gear shift request and torque unloading complement mark are sent to transmission control Unit TCU processed；The signals such as engine demand torque and vehicle mode are also sent to engine controller by electric machine controller ECN ECM, the signals such as energy transmission state, vehicle mode state are sent to combination instrument；Engine controller ECM executes parking hair Electricity and drive control strategy；Motion control unit TCU is for executing power generation in parking, speed regulation gear shift and drive control strategy；Combination Instrument is for showing energy state, vehicle mode etc..

Generally speaking, according to an embodiment of the invention, under electric-only mode, the first motor generator and the second electronic hair Motor carries out torque distribution simultaneously, while hybrid electric vehicle being driven to sail, and guarantees the first motor generator and second electronic Generator reaches its rated output torque and peak torque simultaneously.Under hybrid mode, when the speed of hybrid vehicle Less than or equal to the first preset vehicle speed, i.e., when speed is lower, it can first control the first motor generator and the second motor generator simultaneously Torque distribution is carried out, is sailed by the first motor generator and the second motor generator driving hybrid electric vehicle, later, if dynamic Power demand is larger, that is, is assigned to the torque of the first motor generator and the second motor generator respectively more than the first motor generator With the peak torque of the second motor generator, then control engine carry out torque supply；When the speed of hybrid vehicle is greater than When first preset vehicle speed, that is, speed is higher, it can first control engine and individually carry out torque distribution, mixing is operated alone by engine Power vehicle traveling, engine residual torque can be converted into electric energy by the first motor generator and be stored into power battery, it Afterwards, if power demand is larger, i.e., demand torque is greater than preset engine torque or preset economic torque, then controls first Motor generator and the second motor generator carry out torque distribution, engine, the first motor generator and the second electronic hair simultaneously Motor drives hybrid electric vehicle to sail simultaneously.

In addition, the operating mode of hybrid vehicle may also include series model, paralleling model and mixed connection mode.Series connection mould Formula is the power generation of the first motor generator of engine driving, and the second motor generator driving hybrid electric vehicle is sailed, and first is electronic Electrical power generators are supplied to the second motor generator driving use or power battery stores；Paralleling model is engine and first Motor generator, the second motor generator drive hybrid electric vehicle to sail simultaneously；Mixed connection mode is series model and and gang mould The perfect combination of formula, evades the deficiency of two kinds of connecting modes, under mixed connection mode, can control engine driving hybrid electric vehicle It sails, and controls the power generation of the first motor generator of engine driving, used with being supplied to the driving of the second motor generator.Root as a result, It, can feelings such as torque, the SOC of power battery, speed and drive system operation area according to demand according to the description of the embodiment of the present invention Condition comprehensive descision simultaneously selects suitable operating mode (i.e. series model, paralleling model or mixed connection mode, three take one).Work as vehicle When smaller and power battery the SOC of speed is lower, i.e., speed is less than or equal to the second preset vehicle speed and the SOC of power battery is less than or equal to Third power threshold, engine speed is lower at this time, and the economy of traffic coverage is poor, based on series model, by the second electricity Vehicle driving is operated alone in dynamic generator, and controls the first motor generator of engine driving and carry out power generation cascade, for the second electricity Dynamic generator drive uses, and the electricity having more is stored to power battery, wherein if the torsion machine of the second motor generator output is not Foot then controls the second motor generator driving running car after the first motor generator and engine assistance；When speed is higher, I.e. speed be greater than the first preset vehicle speed or the second preset vehicle speed, based on paralleling model, engine be operated alone running car or The first motor generator of person and the second motor generator assist engine-driven car traveling, wherein if the SOC of power battery Less than the second power threshold SOC2, based on mixed connection mode, a part of torque drive hybrid electric vehicle of engine is sailed, hair Motivation is generated electricity using the first motor generator of another part torque drive, and being supplied to the second motor generator and drive makes With to play the large torque characteristic of the second motor generator, mixed connection mode has given full play to series model and paralleling model Advantage, can make the Optimized Matching of engine, the first motor generator and the second motor generator, to make hybrid vehicle Work is in optimum state, it is easier to realize the control target of discharge and oil consumption.

In addition, the operating mode of hybrid vehicle may also include forerunner's mode, rear-guard mode and 4 wheel driven mode.Rear-guard mould Formula is that running car, the first motor generator and engine are operated alone by the second motor generator or does not work or cooperate with hair Electricity；Forerunner's mode is engine, the first motor generator or both driving running car jointly；4 wheel driven mode is with forerunner's mode Running car is driven jointly with rear-guard mode.Description according to an embodiment of the present invention as a result, can torque, power electric according to demand Situations such as SOC in pond, speed and drive system operation area comprehensive descision and select suitable operating mode (i.e. forerunner's mode, Rear-guard mode or 4 wheel driven mode, three take one).When speed is smaller and the SOC of power battery, i.e., speed is less than or equal to second The SOC of preset vehicle speed and power battery is less than or equal to third power threshold, and vehicle driving is operated alone by the second motor generator, It i.e. with rear-guard mode activated vehicle driving, and controls the first motor generator of engine driving and carries out power generation cascade, for the second electricity Dynamic generator drive uses, and the electricity having more is stored to power battery；When the speed of hybrid vehicle is greater than the first default vehicle When speed is that speed is higher, hybrid electric vehicle first can be operated alone by engine and sailed, the first motor generator and second electronic Generator is distributed without torque, later, if the SOC of power battery, less than the second power threshold SOC2, engine utilizes Surplus torque drives the first motor generator to carry out power generation storage into power battery, when demand torque is greater than preset engine Torque or preset economic torque, then control the first motor generator and the second motor generator while carrying out torque distribution, the One motor generator and the second motor generator assist engine driving hybrid electric vehicle to sail.

To sum up, the control method of the hybrid vehicle proposed according to embodiments of the present invention, in detection hybrid vehicle Operating condition and/or power battery working condition after, according to the instruction of the pattern switching of user and hybrid vehicle The working state control hybrid vehicle of operating condition and/or power battery switches to corresponding operating mode, and when mixed When conjunction power vehicle is in electric-only mode or hybrid mode, the first motor generator and the second dynamoelectric and power generation can control Machine carries out torque distribution simultaneously.The control method passes through while controlling the first motor generator and the second motor generator as a result, Output torque can carry out reasonable distribution to the output of engine and motor generator, have hybrid vehicle good logical The property crossed, economy, steering property, handling and cross-country ability, promote the experience of user.Also, the control method is according to hybrid power The operating condition of automobile and/or the working condition of power battery determine operating mode, to give full play to series model and parallel connection The advantages of mode, makes engine and motor generator all work preferable on the basis of guaranteeing hybrid electric vehicle power Economic zone, reach the control target of discharge and oil consumption.

The embodiment of the present invention also proposes a kind of power drive system of hybrid vehicle for executing the control method.This is mixed The power drive system for closing power vehicle includes: engine, multiple input shafts, multiple output shafts, motor power axis, first electronic Generator, the second motor generator, detection module and control module.

Wherein, engine is arranged to be selectively engageable at least one of multiple input shafts, sets on each input shaft It is equipped with gear driving gear；Gear driven gear, gear driven gear and gear driving gear pair are provided on each output shaft It engages with answering；Motor power axis is arranged to link with one in input shaft；First motor generator is for driving first pair Wheel, the first motor generator are arranged to link with motor power axis；Second motor generator is for driving second pair of vehicle Wheel；Detection module is used to detect the operating condition of hybrid vehicle and/or the working condition of power battery；Control module is used for Working state control according to the operating condition and/or power battery of the instruction of the pattern switching of user and hybrid vehicle is mixed It closing power vehicle and switches to corresponding operating mode, wherein operating mode includes electric-only mode and hybrid mode, and When hybrid vehicle is in electric-only mode or hybrid mode, control module can control the first motor generator and Second motor generator carries out torque distribution simultaneously.

A specific embodiment according to the present invention, control module may include electric machine controller and motion control unit, In, it is communicated with each other between electric machine controller and motion control unit by the communication network of hybrid vehicle.

According to one embodiment of present invention, when hybrid vehicle enters electric-only mode, if hybrid power vapour The current shift of vehicle is non-P gear, wherein when the demand torque of hybrid vehicle is less than or equal to the specified of the first motor generator When the sum of output torque and the rated output torque of the second motor generator, control module controls the first motor generator and second Motor generator is according between the rated output torque of the first motor generator and the rated output torque of the second motor generator Ratio carry out torque distribution；When hybrid vehicle demand torque be greater than the first motor generator rated output torque and When the sum of rated output torque of the second motor generator, control module controls the first motor generator and the second motor generator Torque distribution is carried out according to preset torque distribution principle.

Further, according to one embodiment of present invention, when the first motor generator and the second motor generator carry out After torque distribution, the gear of the first motor generator is selected according to the speed of hybrid vehicle, wherein works as hybrid power When the speed of automobile is less than shift speed, the first motor generator selects the first gear；When the speed of hybrid vehicle is greater than When equal to shift speed, the first motor generator selects the second gear.Wherein, the acceleration of speed of shifting gears and hybrid vehicle is stepped on Plate aperture correlation.

According to another embodiment of the invention, motor power axis is also arranged to be able to link with one in output shaft, One in motor power axis and output shaft when being linked, the first motor generator the power of generation can be passed through output One output of axis；Power drive system further include: motor power axis synchronizer, motor power axis synchronizer are arranged in motor On power axis, motor power axis is arranged to selectively join with one of input shaft by the synchronization of motor power axis synchronizer A linkage dynamic or with output shaft.

Further, according to another embodiment of the invention, power drive system further include: motor power axis first Gear and motor power axis second gear.Wherein, motor power axis first gear and the equal empty set of motor power axis second gear are set It sets on motor power axis, motor power axis first gear is arranged to link with one of input shaft, motor power axis Two gears are arranged to link with one of output shaft；The setting of motor power axis synchronizer in motor power axis first gear and Between motor power axis second gear.

Further, according to another embodiment of the invention, motor power axis synchronizer with motor power axis first During one in gear and motor power axis second gear engagement is switched to and engage with another, the first motor generator is arranged It is target to motor power axis at using another the revolving speed in motor power axis first gear and motor power axis second gear It is adjusted the speed, so that the gear of the first motor generator switches between the first gear and the second gear.

According to still another embodiment of the invention, when hybrid vehicle enters hybrid mode, if mixing is dynamic The current shift of power automobile is non-P gear, wherein when the SOC of power battery is more than or equal to 0 and when less than the first power threshold, control Molding block control hybrid vehicle is run in a manner of the low battery under hybrid mode；When power battery SOC be greater than etc. In the first power threshold and when less than the second power threshold, control module controls hybrid vehicle under hybrid mode Middle electricity mode is run；When the SOC of power battery is more than or equal to the second power threshold, control module controls hybrid vehicle It is run in a manner of the high electricity under hybrid mode.

Further, according to still another embodiment of the invention, if the current shift of hybrid vehicle is P gear, control Molding root tuber carries out power generation in parking according to the speed of hybrid vehicle and the SOC control hybrid vehicle of power battery.

A specific embodiment according to the present invention, when hybrid vehicle is in a manner of the high electricity under hybrid mode When operation, wherein if the speed of hybrid vehicle is less than or equal to the maximum electric discharge function of the first preset vehicle speed and power battery Rate is greater than the first predetermined power, and control module also judges whether the demand torque of hybrid vehicle is less than or equal to the first electronic hair The sum of rated output torque and the rated output torque of the second motor generator of motor；If control module judges hybrid power The demand torque of automobile is less than or equal to the rated output torque of the first motor generator and the rated output of the second motor generator The sum of torque, control module control the first motor generator and the second motor generator according to the specified defeated of the first motor generator The ratio between torque and the rated output torque of the second motor generator carries out torque distribution, and the first motor generator out Select the first gear；If control module judges that the demand torque of hybrid vehicle is greater than the specified defeated of the first motor generator The sum of torque and the rated output torque of the second motor generator out, control module control the first motor generator and second electronic Generator carries out torque distribution according to preset torque distribution principle, and the first motor generator selects the first gear.

Further, when the speed of hybrid vehicle is less than or equal to the maximum electric discharge of the first preset vehicle speed and power battery When power is less than or equal to the first predetermined power, control module first controls the first electronic hair according to the demand torque of hybrid vehicle Motor and the second motor generator carry out torque distribution, wherein if being assigned to the first motor generator and the second dynamoelectric and power generation For the torque of machine respectively more than the peak torque of the first motor generator and the second motor generator, control module controls engine again Torque T b is supplied with first and carries out torque output, wherein Tb=T-Tfp-Trp, T are demand torque, and Tfp is the first dynamoelectric and power generation The peak torque of machine, Trp are the peak torque of the second motor generator；Wherein, the first motor generator selects the first gear.

Further, when the speed of hybrid vehicle is greater than the first preset vehicle speed, control module is according to hybrid power The demand torque of automobile first controls engine and carries out torque distribution until the torque for being assigned to engine reaches preset economic torsion Square, then control the first motor generator and the second motor generator and supply torque T c progress torque output with second, wherein Tc= T-T2, T are demand torque, and T2 is preset economic torque, wherein if being assigned to the first motor generator and second electronic For the torque of generator respectively more than the peak torque of the first motor generator and the second motor generator, control module controls hair again Motivation supplies torque T b with first and carries out torque output, wherein Tb=T-Tfp-Trp, T are demand torque, and Tfp is first electronic The peak torque of generator, Trp are the peak torque of the second motor generator；Wherein, the first motor generator selects second gear Position.

Another specific embodiment according to the present invention, when hybrid vehicle is with the middle electricity side under hybrid mode When formula is run, wherein if the speed of hybrid vehicle is less than or equal to the first preset vehicle speed, control module controls hybrid power Automobile is run in a manner of low speed pure electric vehicle；If the speed of hybrid vehicle is greater than the first preset vehicle speed, control module is also sentenced Whether the demand torque of disconnected hybrid vehicle is less than or equal to preset engine torque；If control module judges hybrid power The demand torque of automobile is less than or equal to preset engine torque, and control module controls engine according to the need of hybrid vehicle It asks torque to carry out torque distribution, and controls engine and drive the first motor generator to carry out power generation in parallel with the second predetermined power, Wherein, the first motor generator selects the second gear；If it is pre- that control module judges that the demand torque of hybrid vehicle is greater than If engine torque, control module control engine exported with preset engine torque, and according to the surplus of engine Remaining torque T d control engine is to drive the first motor generator to carry out power generation in parallel, wherein Td=T3-T ', T3 are preset Engine torque, T ' are Hybrid Vehicle in the demand torque of driving；If Hybrid Vehicle is in the demand of driving Torque is greater than preset engine torque, then control module control engine carries out output torque to meet Hybrid Vehicle In the demand torque of driving, if being still unsatisfactory for the driving demand of hybrid vehicle, control module controls the first electronic hair Motivation and the second genemotor output torque are to meet Hybrid Vehicle in the demand torque of driving.Wherein, the first electricity Dynamic generator selects the second gear.

Another specific embodiment according to the present invention, when hybrid vehicle is with the low battery side under hybrid mode When formula is run, wherein if the speed that the SOC of power battery is greater than third power threshold and hybrid vehicle is less than or equal to the One preset vehicle speed, control module control hybrid vehicle are run in a manner of low speed pure electric vehicle；If the SOC of power battery is greater than Third power threshold and the speed of hybrid vehicle are greater than the first preset vehicle speed, and control module also judges hybrid vehicle Whether demand torque is less than or equal to preset engine torque；If control module judges that the demand torque of hybrid vehicle is small In being equal to preset engine torque, control module controls engine and carries out torque point according to the demand torque of hybrid vehicle Match, and control engine and drive the first motor generator to carry out power generation in parallel with the second predetermined power, wherein the first dynamoelectric and power generation Machine selects the second gear；If control module judges that the demand torque of hybrid vehicle is greater than preset engine torque, control Molding block control engine is exported with preset engine torque, and controls engine according to the surplus torque Td of engine To drive the first motor generator to carry out power generation in parallel, wherein Td=T3-T ', T3 are preset engine torque, and T ' is mixing Demand torque of the power vehicle for driving；If Hybrid Vehicle is greater than preset engine in the demand torque of driving Torque, then control module control engine carries out output torque to meet Hybrid Vehicle in the demand torque of driving, such as Fruit is still unsatisfactory for the driving demand of hybrid vehicle, then control module controls the first genemotor and the second genemotor Output torque is to meet Hybrid Vehicle in the demand torque of driving.Wherein, the first motor generator selects the second gear.

Further, when the SOC of power battery is less than or equal to third power threshold, wherein if hybrid vehicle Speed be less than or equal to the second preset vehicle speed, control module control engine with third predetermined power drive the first motor generator Power generation cascade is carried out, and electric energy is supplied into the second motor generator and is used to drive traveling.

Further, if the speed of hybrid vehicle is greater than the second preset vehicle speed, control module also judges that mixing is dynamic Whether the demand torque of power automobile is less than or equal to preset engine torque；If control module judges the need of hybrid vehicle Ask torque be less than or equal to preset engine torque, control module control engine according to hybrid vehicle demand torque into The distribution of row torque, and control engine and drive the first motor generator to carry out power generation in parallel with the second predetermined power；If control Module judges that the demand torque of hybrid vehicle is greater than preset engine torque, and control module controls engine with preset Engine torque is exported, and according to the surplus torque Td of engine control engine with drive the first motor generator into Row power generation in parallel；Wherein, Td=T3-T ', T3 are preset engine torque, and T ' is Hybrid Vehicle in the demand of driving Torque；If Hybrid Vehicle is greater than preset engine torque, control module control hair in the demand torque of driving Motivation carries out output torque to meet Hybrid Vehicle in the demand torque of driving, if being still unsatisfactory for hybrid vehicle Driving demand, then control module controls the first genemotor and the second genemotor output torque to meet hybrid power Demand torque of the automobile for driving.Also, when the speed of hybrid vehicle is less than shift speed, the first motor generator The first gear is selected, when the speed of hybrid vehicle is more than or equal to shift speed, the first motor generator selects second gear Position.

The invention also provides a kind of hybrid vehicle, the power drive system including above-mentioned hybrid vehicle.

The invention also provides a kind of power drive systems of electric car, comprising: motor power axis, multiple output shafts, Motor power axis synchronizer, the first motor generator, the second motor generator and control module.

Wherein, for driving pair of wheels, motor power axis is arranged to and multiple outputs the first motor generator A linkage in axis, when motor power axis is linked with one in multiple output shafts, the first motor generator can By the power of generation by an output of multiple output shafts, motor power axis synchronizer is arranged on motor power axis, motor Line shaft is arranged to selectively link with one in multiple output shafts by the synchronization of motor power axis synchronizer；The Two motor generators are for driving second pair of wheel；Control module controls the first motor generator and the second motor generator simultaneously Carry out torque distribution.

According to one embodiment of present invention, if the current shift of electric car is non-P gear, wherein work as electric car Demand torque be less than or equal to the first motor generator rated output torque and the second motor generator rated output torque The sum of when, the first motor generator and the second motor generator are according to the rated output torque of the first motor generator and the second electricity Ratio between the rated output torque of dynamic generator carries out torque distribution；When the demand torque of electric car is electronic greater than first When the sum of rated output torque and the rated output torque of the second motor generator of generator, the first motor generator and second Motor generator carries out torque distribution according to preset torque distribution principle.

Further, according to one embodiment of present invention, when the first motor generator and the second motor generator carry out After torque distribution, the gear of the first motor generator is selected according to the speed of electric car, wherein when the vehicle of electric car When speed is less than shift speed, the first motor generator selects the first gear；When the speed of electric car is more than or equal to shift speed When, the first motor generator selects the second gear.Wherein, the accelerator pedal aperture of speed and electric car of shifting gears is positively correlated pass System.

A specific embodiment according to the present invention, preset torque distribution principle can determine the first electricity according to the following formula The torque of dynamic generator and the second motor generator:

To sum up, the power drive system of the electric car proposed according to embodiments of the present invention passes through control module control the One motor generator and the second motor generator carry out torque distribution simultaneously.The power drive system can be electronic to first as a result, The output of generator and the second motor generator carries out reasonable distribution, and hybrid vehicle is made to have good passability, economy Property, turn to property, handling and cross-country ability, promote the experience of user.

In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.

In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three It is a etc., unless otherwise specifically defined.

In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc. Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.

In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below " One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples It closes and combines.

Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned Embodiment is changed, modifies, replacement and variant.

Claims

1. a kind of control method of hybrid vehicle, which is characterized in that the power drive system packet of the hybrid vehicle Include engine, multiple input shafts, multiple output shafts, motor power axis, the first motor generator for driving pair of wheels With for driving second motor generator of second pair of wheel, wherein the engine is arranged to be selectively engageable described At least one of multiple input shafts are provided with gear driving gear on each input shaft, set on each output shaft It is equipped with gear driven gear, the gear driven gear is accordingly engaged with the gear driving gear, the motor power axis It is arranged to link with one in the input shaft, first motor generator is arranged to and the motor power axis Linkage, the control method the following steps are included:

Detect the operating condition of the hybrid vehicle and/or the working condition of the power battery；

According to the work of the operating condition and/or the power battery of the instruction of the pattern switching of user and the hybrid vehicle Make the state control hybrid vehicle and switch to corresponding operating mode, wherein the operating mode includes pure electric vehicle mould Formula and hybrid mode, and when the hybrid vehicle is in the electric-only mode or the hybrid mode When, it can control first motor generator and second motor generator while carrying out torque distribution；

Wherein, when the hybrid vehicle enters the electric-only mode, if the hybrid vehicle works as front Position is that non-P is kept off, wherein

When the demand torque of the hybrid vehicle is less than or equal to rated output torque and the institute of first motor generator When stating the sum of the rated output torque of the second motor generator, first motor generator and second motor generator are pressed Rated output torque according to first motor generator and the ratio between the rated output torque of second motor generator Example carries out torque distribution.

2. the control method of hybrid vehicle as described in claim 1, which is characterized in that when the hybrid vehicle into When entering the electric-only mode, if the current shift of the hybrid vehicle is non-P gear, wherein

When the demand torque of the hybrid vehicle is greater than the rated output torque and described the of first motor generator When the sum of rated output torque of two motor generators, first motor generator and second motor generator are according to pre- If torque distribution principle carry out torque distribution.

3. the control method of hybrid vehicle as claimed in claim 2, which is characterized in that the preset torque distribution is former The torque of the first motor generator and the second motor generator is then determined according to the following formula:

Wherein, T is the demand torque, and Tf is the torque for distributing to first motor generator, and Tr is to distribute to described the The torque of two motor generators, Tfe are the rated output torque of first motor generator, and Tre is the described second electronic hair The rated output torque of motor, Tfp are the peak torque of first motor generator, and Trp is second motor generator Peak torque.

4. the control method of hybrid vehicle as described in claim 1, which is characterized in that when first motor generator After carrying out torque distribution with second motor generator, the gear of first motor generator is according to the hybrid power vapour The speed of vehicle is selected, wherein

When the speed of the hybrid vehicle is less than shift speed, first motor generator selects the first gear；

When the speed of the hybrid vehicle is more than or equal to the shift speed, the first motor generator selection second Gear.

5. the control method of hybrid vehicle as claimed in claim 4, which is characterized in that the shift speed is mixed with described Close the accelerator pedal aperture correlation of power vehicle.

6. the control method of hybrid vehicle as claimed in claim 4, which is characterized in that the power drive system is also wrapped Motor power axis synchronizer, motor power axis first gear and motor power axis second gear are included, the motor power axis is synchronous Device engaged with one in the motor power axis first gear and the motor power axis second gear be switched to it is another During a engagement, first motor generator is arranged to the motor power axis first gear and the motor power axis In two gears it is described another revolving speed be target the motor power axis is adjusted the speed so that first dynamoelectric and power generation The gear of machine switches between first gear and second gear.

7. the control method of hybrid vehicle as described in claim 1, which is characterized in that when the hybrid vehicle into When entering the hybrid mode, if the current shift of the hybrid vehicle is non-P gear, wherein

When the SOC of the power battery is more than or equal to 0 and when less than the first power threshold, the hybrid vehicle is controlled with institute The low battery mode stated under hybrid mode is run；

When the SOC of the power battery is more than or equal to first power threshold and when less than the second power threshold, described in control Hybrid vehicle is run in a manner of the middle electricity under the hybrid mode；

When the SOC of the power battery is more than or equal to second power threshold, the hybrid vehicle is controlled with described High electricity mode under hybrid mode is run.

8. the control method of hybrid vehicle as claimed in claim 7, which is characterized in that if the hybrid vehicle Current shift be P gear, the hybrid power is controlled according to the SOC of the speed of the hybrid vehicle and the power battery Automobile carries out power generation in parking.

9. the control method of hybrid vehicle as claimed in claim 7, which is characterized in that when the hybrid vehicle with When high electricity mode under the hybrid mode is run, wherein

If the speed of the hybrid vehicle is less than or equal to the maximum electric discharge function of the first preset vehicle speed and the power battery Rate is greater than the first predetermined power, judges whether the demand torque of the hybrid vehicle is less than or equal to first dynamoelectric and power generation The sum of the rated output torque of machine and the rated output torque of second motor generator；

If so, first motor generator and second motor generator are according to the specified of first motor generator Ratio between output torque and the rated output torque of second motor generator carries out torque distribution, and described first Motor generator selects the first gear；

If not, first motor generator and second motor generator are turned round according to preset torque distribution principle Square distribution, and first motor generator selects the first gear.

10. the control method of hybrid vehicle as claimed in claim 9, which is characterized in that when the hybrid vehicle Speed be less than or equal to the maximum discharge power of first preset vehicle speed and the power battery to be less than or equal to described first pre- If when power, first controlling first motor generator and described second electronic according to the demand torque of the hybrid vehicle Generator carries out torque distribution, wherein if being assigned to the torsion of first motor generator and second motor generator Square is more than the peak torque of first motor generator and second motor generator respectively, then control the engine with First, which supplies torque T b, carries out torque output, wherein Tb=T-Tfp-Trp, T are the demand torque, and Tfp is first electricity The peak torque of dynamic generator, Trp are the peak torque of second motor generator；

Wherein, first motor generator selects the first gear.

11. the control method of hybrid vehicle as claimed in claim 9, which is characterized in that when the hybrid vehicle Speed be greater than first preset vehicle speed when, according to the demand torque of the hybrid vehicle first control the engine into The distribution of row torque is until the torque for being assigned to the engine reaches preset economic torque, then controls first dynamoelectric and power generation Machine and second motor generator supply torque T c with second and carry out torque output, wherein Tc=T-T2, T are the demand Torque, T2 are the preset economic torque, wherein

If the torque for being assigned to first motor generator and second motor generator is more than first electricity respectively The peak torque of dynamic generator and second motor generator, then control the engine and supply torque T b with first and turned round Square output, wherein Tb=T-Tfp-Trp, T are the demand torque, and Tfp is the peak torque of first motor generator, Trp is the peak torque of second motor generator；

Wherein, first motor generator selects the second gear.

12. the control method of hybrid vehicle as claimed in claim 7, which is characterized in that when the hybrid vehicle When being run in a manner of the middle electricity under the hybrid mode, wherein

If the speed of the hybrid vehicle is less than or equal to the first preset vehicle speed, the hybrid vehicle is controlled with low speed Pure electric vehicle mode is run；

If the speed of the hybrid vehicle is greater than first preset vehicle speed, the demand of the hybrid vehicle is judged Whether torque is less than or equal to preset engine torque；

Torque distribution is carried out according to the demand torque of the hybrid vehicle if so, controlling the engine, and controls institute It states engine and drives first motor generator to carry out power generation in parallel with the second predetermined power；

It is exported if not, controlling the engine with preset engine torque, and is turned round according to the residue of the engine Square Td controls the engine to drive first motor generator to carry out power generation in parallel, wherein Td=T3-T ', T3 are institute Preset engine torque is stated, T ' is the Hybrid Vehicle in the demand torque of driving；

If the Hybrid Vehicle in driving demand torque be greater than the preset engine torque, control described in Engine carries out output torque to meet the Hybrid Vehicle in the demand torque of driving, if it is dynamic to be still unsatisfactory for mixing The driving demand of power automobile, then it is described mixed to meet to control first genemotor and the second genemotor output torque Close demand torque of the power vehicle for driving.

13. the control method of hybrid vehicle as claimed in claim 7, which is characterized in that when the hybrid vehicle When being run in a manner of the low battery under the hybrid mode, wherein

If the SOC of the power battery is greater than third power threshold and the speed of the hybrid vehicle is less than or equal to first Preset vehicle speed is controlled the hybrid vehicle and is run in a manner of low speed pure electric vehicle；

If the SOC of the power battery is greater than the third power threshold and the speed of the hybrid vehicle is greater than described First preset vehicle speed, judges whether the demand torque of the hybrid vehicle is less than or equal to preset engine torque；

It is exported if not, controlling the engine with the preset engine torque, and according to the surplus of the engine Remaining torque T d controls the engine to drive first motor generator to carry out power generation in parallel, wherein Td=T3-T ', T3 For the preset engine torque, T ' is the Hybrid Vehicle in the demand torque of driving；

14. the control method of hybrid vehicle as claimed in claim 13, which is characterized in that when the power battery When SOC is less than or equal to the third power threshold, wherein preset if the speed of the hybrid vehicle is less than or equal to second Speed then controls the engine and drives first motor generator to carry out power generation cascade with third predetermined power, and will be electric Second motor generator can be supplied for driving traveling.

15. the control method of hybrid vehicle as claimed in claim 14, which is characterized in that if the hybrid power vapour The speed of vehicle is greater than second preset vehicle speed, and it is described pre- to judge whether the demand torque of the hybrid vehicle is less than or equal to If engine torque；

Torque distribution is carried out according to the demand torque of the hybrid vehicle if so, controlling the engine, and controls institute It states engine and drives first motor generator to carry out power generation in parallel with second predetermined power；

16. a kind of power drive system of hybrid vehicle characterized by comprising

Engine；

Multiple input shafts, the engine are arranged to be selectively engageable at least one of the multiple input shaft, each Gear driving gear is provided on the input shaft；

Multiple output shafts are provided with gear driven gear, the gear driven gear and the gear on each output shaft Driving gear accordingly engages；

Motor power axis, the motor power axis are arranged to link with one in the input shaft；

For driving the first motor generator of pair of wheels, first motor generator is arranged to and the motor Line shaft linkage；

For driving second motor generator of second pair of wheel；

Detection module, for detecting the operating condition of the hybrid vehicle and/or the working condition of the power battery；

Control module, for operating condition and/or the institute according to the instruction of the pattern switching of user and the hybrid vehicle It states hybrid vehicle described in the working state control of power battery and switches to corresponding operating mode, wherein the Working mould Formula includes electric-only mode and hybrid mode, and when the hybrid vehicle is in the electric-only mode or institute When stating hybrid mode, the control module can control first motor generator and second motor generator simultaneously Carry out torque distribution；

Wherein, when the hybrid vehicle enters the electric-only mode, if the hybrid vehicle works as front Position is that non-P is kept off, wherein when the demand torque of the hybrid vehicle is less than or equal to the specified defeated of first motor generator Out when the sum of torque and the rated output torque of second motor generator, the control module controls the first electronic hair Motor and second motor generator according to first motor generator rated output torque and the described second electronic hair Ratio between the rated output torque of motor carries out torque distribution.

17. the power drive system of hybrid vehicle as claimed in claim 16, which is characterized in that when the hybrid power When automobile enters the electric-only mode, if the current shift of the hybrid vehicle is non-P gear, wherein

When the demand torque of the hybrid vehicle is greater than the rated output torque and described the of first motor generator When the sum of rated output torque of two motor generators, the control module controls first motor generator and described second Motor generator carries out torque distribution according to preset torque distribution principle.

18. the power drive system of hybrid vehicle as claimed in claim 16, which is characterized in that when described first electronic After generator and second motor generator carry out torque distribution, the gear of first motor generator is according to the mixing The speed of power vehicle is selected, wherein

19. the power drive system of hybrid vehicle as claimed in claim 18, which is characterized in that the shift speed with The accelerator pedal aperture correlation of the hybrid vehicle.

20. the power drive system of hybrid vehicle as claimed in claim 18, which is characterized in that the motor power axis Be also arranged to be able to one in output shaft linkage, the motor power axis with it is one in the output shaft When being linked, one output that the power of generation can be passed through the output shaft by first motor generator；With And

The power drive system further include:

Motor power axis synchronizer, the motor power axis synchronizer are arranged on the motor power axis, the motor power Axis be arranged to can by the synchronization of the motor power axis synchronizer selectively with one linkage of the input shaft Or one linkage with the output shaft.

21. the power drive system of hybrid vehicle as claimed in claim 20, which is characterized in that further include:

Motor power axis first gear and motor power axis second gear, the motor power axis first gear and the motor The equal sky of power axis second gear is set on the motor power axis, the motor power axis first gear be arranged to it is described defeated Enter the one of axis to link, the motor power axis second gear is arranged to one progress with the output shaft Linkage；And

The motor power axis synchronizer is arranged in the motor power axis first gear and the motor power axis second gear Between.

22. the power drive system of hybrid vehicle as claimed in claim 21, which is characterized in that the motor power axis Synchronizer engaged with one in the motor power axis first gear and the motor power axis second gear be switched to During another engagement, first motor generator is arranged to the motor power axis first gear and the motor power In axis second gear it is described another revolving speed be target the motor power axis is adjusted the speed so that described first is electronic The gear of generator switches between first gear and second gear.

23. the power drive system of hybrid vehicle as claimed in claim 16, which is characterized in that when the hybrid power When automobile enters the hybrid mode, if the current shift of the hybrid vehicle is non-P gear, wherein

When the SOC of the power battery is more than or equal to 0 and when less than the first power threshold, the control module controls the mixing Power vehicle is run in a manner of the low battery under the hybrid mode；

When the SOC of the power battery is more than or equal to first power threshold and when less than the second power threshold, the control Module is controlled the hybrid vehicle and is run in a manner of the middle electricity under the hybrid mode；

When the SOC of the power battery is more than or equal to second power threshold, the control module control mixing is dynamic Power automobile is run in a manner of the high electricity under the hybrid mode.

24. the power drive system of hybrid vehicle as claimed in claim 23, which is characterized in that if the mixing is dynamic The current shift of power automobile is P gear, and the control module is according to the speed of the hybrid vehicle and the power battery SOC controls the hybrid vehicle and carries out power generation in parking.

25. the power drive system of hybrid vehicle as claimed in claim 23, which is characterized in that when the hybrid power When automobile is run in a manner of the high electricity under the hybrid mode, wherein

If the speed of the hybrid vehicle is less than or equal to the maximum electric discharge function of the first preset vehicle speed and the power battery Rate is greater than the first predetermined power, and the control module also judges whether the demand torque of the hybrid vehicle is less than or equal to institute State the sum of rated output torque and the rated output torque of second motor generator of the first motor generator；

If the control module judges that the demand torque of the hybrid vehicle is less than or equal to first motor generator Rated output torque and the sum of the rated output torque of second motor generator, the control module control described first Motor generator and second motor generator according to first motor generator rated output torque and described second Ratio between the rated output torque of motor generator carries out torque distribution, and first motor generator selection first Gear；

If the control module judges that the demand torque of the hybrid vehicle is greater than the volume of first motor generator Determine the sum of output torque and the rated output torque of second motor generator, the control module control described first is electronic Generator and second motor generator carry out torque distribution according to preset torque distribution principle, and described first electronic Generator selects the first gear.

26. the power drive system of hybrid vehicle as claimed in claim 25, which is characterized in that when the hybrid power The maximum discharge power that the speed of automobile is less than or equal to first preset vehicle speed and the power battery is less than or equal to described the When one predetermined power, the control module first controls first dynamoelectric and power generation according to the demand torque of the hybrid vehicle Machine and second motor generator carry out torque distribution, wherein if being assigned to first motor generator and described the The torque of two motor generators is more than the peak torque of first motor generator and second motor generator, institute respectively State control module control again engine with first supply torque T b carry out torque output, wherein Tb=T-Tfp-Trp, T are described Demand torque, Tfp are the peak torque of first motor generator, and Trp is the peak torque of second motor generator；

Wherein, first motor generator selects the first gear.

27. the power drive system of hybrid vehicle as claimed in claim 25, which is characterized in that when the hybrid power When the speed of automobile is greater than first preset vehicle speed, the control module is first according to the demand torque of the hybrid vehicle It controls the engine and carries out torque distribution until the torque for being assigned to the engine reaches preset economic torque, then controls First motor generator and second motor generator supply torque T c with second and carry out torque output, wherein Tc= T-T2, T are the demand torque, and T2 is the preset economic torque, wherein

If the torque for being assigned to first motor generator and second motor generator is more than first electricity respectively The peak torque of dynamic generator and second motor generator, the control module control engine again and supply torque with first Tb carries out torque output, wherein Tb=T-Tfp-Trp, T are the demand torque, and Tfp is the peak of first motor generator It is worth torque, Trp is the peak torque of second motor generator；

Wherein, first motor generator selects the second gear.

28. the power drive system of hybrid vehicle as claimed in claim 23, which is characterized in that when the hybrid power When automobile is run in a manner of the middle electricity under the hybrid mode, wherein

If the speed of the hybrid vehicle is less than or equal to the first preset vehicle speed, the control module control mixing is dynamic Power automobile is run in a manner of low speed pure electric vehicle；

If the speed of the hybrid vehicle is greater than first preset vehicle speed, the control module also judges the mixing Whether the demand torque of power vehicle is less than or equal to preset engine torque；

If the control module judges that the demand torque of the hybrid vehicle is less than or equal to the preset engine and turns round Square, the control module controls the engine and carries out torque distribution according to the demand torque of the hybrid vehicle, and controls It makes the engine and drives first motor generator to carry out power generation in parallel with the second predetermined power；

If the control module judges that the demand torque of the hybrid vehicle is greater than the preset engine torque, institute It states the control module control engine to be exported with the preset engine torque, and according to the residue of the engine Torque T d controls the engine to drive first motor generator to carry out power generation in parallel, wherein Td=T3-T ', T3 are The preset engine torque, T ' are the Hybrid Vehicle in the demand torque of driving；

If the Hybrid Vehicle is greater than the preset engine torque, the control in the demand torque of driving Module controls the engine and carries out output torque to meet the Hybrid Vehicle in the demand torque of driving, if still It is unsatisfactory for the driving demand of hybrid vehicle, then the control module controls first genemotor and the second electronic hair Motivation output torque is to meet the Hybrid Vehicle in the demand torque of driving.

29. the power drive system of hybrid vehicle as claimed in claim 23, which is characterized in that when the hybrid power When automobile is run in a manner of the low battery under the hybrid mode, wherein

If the SOC of the power battery is greater than third power threshold and the speed of the hybrid vehicle is less than or equal to first Preset vehicle speed, the control module are controlled the hybrid vehicle and are run in a manner of low speed pure electric vehicle；

If the SOC of the power battery is greater than the third power threshold and the speed of the hybrid vehicle is greater than described First preset vehicle speed, the control module also judge whether the demand torque of the hybrid vehicle is less than or equal to preset hair Motivation torque；

30. the power drive system of hybrid vehicle as claimed in claim 29, which is characterized in that when the power battery SOC when being less than or equal to the third power threshold, wherein if to be less than or equal to second pre- for the speed of the hybrid vehicle If speed, the control module controls the engine and drives first motor generator to connect with third predetermined power Power generation, and electric energy is supplied into second motor generator and is used to drive traveling.

31. the power drive system of hybrid vehicle as claimed in claim 30, which is characterized in that if the mixing is dynamic The speed of power automobile is greater than second preset vehicle speed, and the control module also judges the demand torque of the hybrid vehicle Whether the preset engine torque is less than or equal to；

If the control module judges that the demand torque of the hybrid vehicle is less than or equal to the preset engine and turns round Square, the control module controls the engine and carries out torque distribution according to the demand torque of the hybrid vehicle, and controls It makes the engine and drives first motor generator to carry out power generation in parallel with second predetermined power；

32. a kind of hybrid vehicle, which is characterized in that including the hybrid power as described in any one of claim 16-31 The power drive system of automobile.

33. a kind of power drive system of electric car characterized by comprising

Motor power axis, multiple output shafts and motor power axis synchronizer；

For driving the first motor generator of pair of wheels, the motor power axis is arranged to and the multiple output A linkage in axis, when the motor power axis is linked with one in the multiple output shaft, first electricity The power of generation can be passed through an output of the multiple output shaft, the motor power axis synchronizer setting by dynamic generator On the motor power axis, the motor power axis is arranged to select by the synchronization of the motor power axis synchronizer Property with one in the multiple output shaft linkage；

For driving second motor generator of second pair of wheel；

Control module, the control module controls first motor generator and second motor generator is turned round simultaneously Square distribution；

Wherein, if the current shift of the electric car is non-P gear, when the demand torque of the electric car is less than or equal to institute When stating the sum of rated output torque and the rated output torque of second motor generator of the first motor generator, described One motor generator and second motor generator are according to the rated output torque of first motor generator and described the Ratio between the rated output torque of two motor generators carries out torque distribution.

34. the power drive system of electric car as claimed in claim 33, which is characterized in that if the electric car Current shift is non-P gear, wherein

When the demand torque of the electric car is greater than the rated output torque and second electricity of first motor generator When the sum of the rated output torque of dynamic generator, first motor generator and second motor generator are according to preset Torque distribution principle carries out torque distribution.

35. the power drive system of electric car as claimed in claim 33, which is characterized in that when first dynamoelectric and power generation After machine and second motor generator carry out torque distribution, the gear of first motor generator is according to the electric car Speed selected, wherein

When the speed of the electric car is less than shift speed, first motor generator selects the first gear；

When the speed of the electric car is more than or equal to the shift speed, first motor generator selects second gear Position.

36. the power drive system of electric car as claimed in claim 35, which is characterized in that the shift speed with it is described The accelerator pedal aperture correlation of electric car.

37. the power drive system of electric car as claimed in claim 34, which is characterized in that the preset torque distribution Principle determines the torque of the first motor generator and the second motor generator according to the following formula: