CN106476604A - Power drive system and the vehicle with it - Google Patents

Abstract

The invention discloses a kind of power drive system and the vehicle with it, including power drive system, it is characterized in that, including electromotor and coupled power input shaft, the first and second planetary gears, the first and second motor generator, power output portion；First motor generator can be engaged with power input shaft, and the sun gear of first planet gear mechanism is rigidly connected with power input shaft and one of its gear ring and planet carrier are rigidly connected with the rotor of the first motor generator；The sun gear of the second planetary gears is rigidly connected and can be engaged with the second motor generator with another in the gear ring and planet carrier of first planet gear mechanism, and one of the gear ring of the second planetary gears and planet carrier are rigidly attached on the second motor generator and another is linked with power output portion to export power.Power drive system according to embodiments of the present invention, has multiple-working mode to adapt to different operating modes and to keep preferably fuel economy.

Description

Power drive system and the vehicle with it

Technical field

The present invention relates to system of vehicle transmission technical field, in particular to a kind of power drive system and have this power transmission The vehicle of system.

Background technology

In correlation technique, in the power drive system of motor vehicle driven by mixed power, system whole efficiency to be improved it is impossible to realize not With mode of operation under all can reach splendid fuel economy, for example, series connection operating mode under, system be only applicable to low speed or Middle speed operation is to obtain higher transmission efficiency, and under high-speed working condition, engine power needs to supplement electricity for system and need Wheel is arrived in experience conversion output twice, and loss is big；Under connection in series-parallel hybrid mode, for ensureing the high efficiency under this pattern The trend that motor generator keeps the large-scale development then can be caused, in this mode, during high-speed working condition, there is high-power electricity simultaneously , thus causing to decline under this operating mode, there is room for improvement in the shortcoming of circulation car load fuel economy.

Content of the invention

It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.For this reason, the one of the present invention Purpose is to propose a kind of power drive system that can realize splendid fuel economy under various operating modes.

Second object of the present invention is to propose a kind of vehicle with above-mentioned power drive system.

Power drive system according to embodiments of the present invention includes：Electromotor；Power input shaft, described power input shaft and institute The bent axle stating electromotor is connected；First motor generator, the rotor of described first motor generator is optionally dynamic with described Power input shaft synchronous axial system；Second motor generator；First planet gear mechanism, the sun of described first planet gear mechanism Wheel is rigidly attached on described power input shaft, the row of the gear ring of described first planet gear mechanism and described first planet gear One of carrier is rigidly attached on the rotor of described first motor generator；Second planetary gears, described second row In the planet carrier of the gear ring of the sun gear of star gear mechanism and described first planet gear mechanism and described first planet gear mechanism Another be rigidly connected, the sun gear of described second planetary gears optionally with described second motor generator Rotor synchronous axial system, one of planet carrier of the gear ring of described second planetary gears and described second planetary gears It is rigidly attached on the rotor of described second motor generator；Power output portion, described power output portion and described second planet Another linkage in the planet carrier of the gear ring of gear mechanism and described second planetary gears is with by described electromotor, described The power output of at least one of the first motor generator and described second motor generator.

Power drive system according to embodiments of the present invention, has multiple-working mode, and in the different operating mode of each mode adaptive, Splendid fuel economy all can be ensured under each operating mode, simple and compact for structure.

The vehicle of embodiment includes the power drive system described in first aspect according to a second aspect of the present invention, thus having car load Characteristics of compact layout, the advantages of fuel economy is high.

Brief description

Fig. 1 is the structural representation of the power drive system according to first embodiment of the invention；

Fig. 2 is the PWTN that the second arrangement of clutch and the 3rd arrangement of clutch are changed on the basis of Fig. 1 lock unit from clutch A kind of embodiment of system；

Fig. 3 is a kind of embodiment of the power drive system that increased the first arrangement of clutch on the basis of Fig. 1；

Fig. 4 is a kind of embodiment of the power drive system that increased the first arrangement of clutch on the basis of Fig. 2；

Fig. 5 is a kind of enforcement of the power drive system of another embodiment showing power output portion on the basis of Fig. 1 Example；

Fig. 6 is a kind of enforcement of the power drive system of another embodiment showing power output portion on the basis of Fig. 2 Example；

Fig. 7 is a kind of enforcement of the power drive system of another embodiment showing power output portion on the basis of Fig. 3 Example；

Fig. 8 is a kind of enforcement of the power drive system of another embodiment showing power output portion on the basis of Fig. 4 Example.

Fig. 9 is the structural representation of the power drive system according to second embodiment of the invention；

Figure 10 is the PWTN that the second arrangement of clutch and the 3rd arrangement of clutch are changed on the basis of Fig. 9 lock unit from clutch A kind of embodiment of system；

Figure 11 is a kind of enforcement of the power drive system of another embodiment showing power output portion on the basis of Fig. 9 Example；

Figure 12 be show on the basis of Figure 10 power output portion the power drive system of another embodiment a kind of real Apply example；

Figure 13 is the structural representation of the power drive system according to third embodiment of the invention；

Figure 14 is the structural representation of the power drive system according to four embodiment of the invention.

Reference：

Power drive system 1000,

Differential mechanism 100,

Electromotor 200,

Power input shaft 1,

First motor generator MG1, the rotor 2 of the first motor generator MG1,

Second motor generator MG2, the rotor 11 of the second motor generator MG2,

First arrangement of clutch C1,

Second clutch C2, the first active part 21, the first secondary part 22,

First planet gear mechanism P1, the sun gear 3 of first planet gear mechanism P1, the tooth of first planet gear mechanism P1 Circle 4, the planetary gear 5 of first planet gear mechanism P1, the planet carrier 6 of first planet gear mechanism P1,

First axle 7,

3rd clutch C3, the second active part 31, the second secondary part 32,

Second planetary gears P2, the sun gear 8 of the second planetary gears P2, the row of the second planetary gears P2 Star-wheel 9, the gear ring 10 of the second planetary gears P2, the planet carrier 12 of the second planetary gears P2,

Power output portion 300, the first driving gear 13, the first driven gear 14,17, two grades of driving gears 15 of jackshaft, Differential mechanism driven gear 16, the second axle 18,

First lock unit S1, the second lock unit S2.

Specific embodiment

Embodiments of the invention are described below in detail, the example of described embodiment is shown in the drawings.Below with reference to accompanying drawing The embodiment of description is exemplary it is intended to be used for explaining the present invention, and is not considered as limiting the invention.

Referring to Fig. 1-Figure 14, power drive system 1000 according to embodiments of the present invention is described, as shown in Fig. 1-Figure 12, Power drive system 1000 according to embodiments of the present invention includes electromotor 200, power input shaft 1, the first motor generator MG1, the second motor generator MG2, first planet gear mechanism P1, the second planetary gears P2 and power output portion 300.

As shown in Fig. 1-Figure 14, the bent axle of electromotor 200 is connected with power input shaft 1 with by the power output of electromotor 200 To power input shaft 1, bent axle is coaxially disposed with power input shaft 1.

First motor generator MG1 and the second motor generator MG2 all can use as motor and also can use as electromotor, And different working modes the first motor generator MG1 according to residing for power drive system 1000 and the second motor generator MG2 All can change that is to say, that the first motor generator MG1 and the second motor generator MG2 between motor and electromotor All can change between driving condition and generating state.

As shown in Fig. 1-Figure 14, the rotor 2 of the first motor generator MG1 optionally with power input shaft 1 synchronous axial system, That is, the rotation axiss of rotor 2 of the first motor generator MG1 are coaxial with the rotation axiss of power input shaft 1, the The rotor 2 of one motor generator MG1 can together with power input shaft 1 is around same axis synchronous axial system it is also possible to each around This axis rotates.

Alternatively, power input shaft 1 passes through the second arrangement of clutch optionally rotor 2 with the first motor generator MG1 Synchronous axial system.As shown in Fig. 1, Fig. 3, Fig. 5, Fig. 7, Fig. 9, Figure 11, the second arrangement of clutch can be clutch, that is, Second clutch C2；As shown in Fig. 2, Fig. 4, Fig. 6, Fig. 8, Figure 10, Figure 12, the second arrangement of clutch can be synchronous Device, i.e. the first lock unit S1.

Each of first planet gear mechanism P1 and the second planetary gears P2 all include sun gear, planetary gear, OK Carrier and gear ring, planetary gear is rotatably arranged on planet carrier, and planetary gear and gear ring internal messing and with sun gear external toothing. For example, first planet gear mechanism P1 includes sun gear 3, gear ring 4, planetary gear 5 and planet carrier 6, the second planetary gear Mechanism P2 includes sun gear 8, planetary gear 9, planet carrier 12 and gear ring 10.

As shown in Fig. 1-Figure 14, the sun gear 3 of first planet gear mechanism P1 be rigidly attached on power input shaft 1 with Power input shaft 1 is synchronous together to be rotated around rotation axiss, i.e. the sun gear 3 of first planet gear mechanism P1 and power input shaft It is coaxially disposed and can synchronous axial system.

It is understood that " two parts are rigidly connected " refers to that two parts are fixed together in explained below, Ke Yiyi Play motion.

One of planet carrier 6 of the gear ring 4 of first planet gear mechanism P1 and first planet gear mechanism P1 is rigidly connected With synchronization together with the rotor 2 of the first motor generator MG1 around rotation axiss on the rotor 2 of the first motor generator MG1 Rotate, that is, first planet gear mechanism P1 is also coaxially disposed with the rotor 2 of the first motor generator MG1.

The sun gear 8 of the second planetary gears P2 and the gear ring 4 of first planet gear mechanism P1 and first planet gear mechanism Another in the planet carrier 6 of structure P1 is rigidly connected, i.e. the sun gear 8 of the second planetary gears P2 and first planet gear The gear ring 4 of the planet carrier 6 of mechanism P1 and first planet gear mechanism P1 is coaxially disposed and can synchronous axial system.

For example, in the embodiment shown in Fig. 1-Figure 12, the gear ring 4 of first planet gear mechanism P1 is rigidly attached to the first electricity On the rotor 2 of dynamic electromotor MG1 and the sun gear 8 of the second planetary gears P2 and first planet gear mechanism P1 row Carrier 6 is rigidly connected；In embodiment shown in Figure 13 and Figure 14, planet carrier 6 rigidity of first planet gear mechanism P1 connects It is connected on the rotor 2 of the first motor generator MG1 and the sun gear 8 of the second planetary gears P2 and first planet gear mechanism The gear ring 4 of structure P1 is rigidly connected.

The sun gear 8 of the second planetary gears P2 is optionally synchronous with the rotor 11 of the second genemotor MG2 to be turned Dynamic that is to say, that the rotor of the rotation axiss of sun gear 8 of the second planetary gears P2 and the second motor generator MG2 11 rotation axiss are coaxial, and the sun gear 8 of the second planetary gears P2 can be with the rotor of the second motor generator MG2 11 around same axis together synchronous axial system it is also possible to each rotate around this axis.Due to the second planetary gears P2's Sun gear 8 is rigidly connected with the planet carrier 6 of first planet gear mechanism P1, thus the planet of first planet gear mechanism P1 Frame 6 also optionally rotor 11 synchronous axial system with the second genemotor MG2.

Alternatively, the sun gear 8 of the second planetary gears P2 pass through the 3rd arrangement of clutch optionally with second electronic Rotor 11 synchronous axial system of motivation MG2.As shown in Fig. 1, Fig. 3, Fig. 5, Fig. 7, Fig. 9, Figure 11, the 3rd clutch dress Putting can be clutch, i.e. the 3rd clutch C3；As shown in Fig. 2, Fig. 4, Fig. 6, Fig. 8, Figure 10, Figure 12, the 3rd from Attach together that to put can be lock unit, i.e. the second lock unit S2.

In some embodiments as shown in Fig. 1-Fig. 8 and Figure 13, the gear ring 10 of the second planetary gears P2 is rigidly connected On the rotor 11 of the second motor generator MG2, i.e. the gear ring 10 of the second planetary gears P2 and the second motor generator The rotor 11 of MG2 be coaxially disposed and can synchronous axial system, the planet carrier of power output portion 300 and the second planetary gears P2 12 linkages are with will be defeated for the power of at least one of electromotor 200, the first motor generator MG1 and the second motor generator MG2 Go out, that is, power output portion 300 linked by the planet carrier 12 with the second planetary gears P2 electromotor 200 is dynamic Power individually exports or individually exports or the power of the first motor generator MG1 by the second motor generator MG2's Power individually export or electromotor 200 coupled with the first motor generator MG1 after power output or will start Machine 200 couple with the second motor generator MG2 after power output or by electromotor 200, the first motor generator MG1 With output after the power coupling of the second motor generator MG2 three or by the first motor generator MG1 and second electronic Export after the power coupling of both motor MG2.

Wherein, two parts " linkage " refer to that the motion between two parts is relevant, and a part motion drives another Part moves or both can be synchronized with the movement.

Certainly, the annexation in power output portion 300, the second motor generator MG2 and the second planetary gears P2 is not It is limited to this, in some embodiments as shown in Fig. 9-Figure 12 and Figure 14, the planet carrier 12 of the second planetary gears P2 is firm Property be connected on the rotor 11 of the second motor generator MG2, i.e. the planet carrier 12 of the second planetary gears P2 and the second electricity The rotor 11 of dynamic electromotor MG2 is coaxially disposed and can synchronous axial system, power output portion 300 and the second planetary gears P2 Gear ring 10 link with by electromotor 200, the first motor generator MG1 and the second motor generator MG2 at least one Power output.

In short, in a power drive system 1000, first planet gear mechanism P1 and the first motor generator MG1, Power input shaft 1, the second planetary gears P2 annexation constant on the basis of, the second planetary gears P2's One of planet carrier 12 of gear ring 10 and the second planetary gears P2 can be rigidly attached to the second motor generator MG2 Rotor 11 on as input, and the planet of the gear ring 10 of the second planetary gears P2 and the second planetary gears P2 Another in frame 12 is linked with power output portion 300 as output.

Alternatively, power output portion 300 can be single reduction gear unit structure, two reduction gear or infinite speed reduction mechanism.For example, In some embodiments shown in Fig. 1-Fig. 4, Fig. 9-Figure 10, power output portion 300 is two reduction gear, specifically should Two reduction gear is second gear reduction unit structure.

The present invention other alternatively in embodiment, as shown in Figure 5-Figure 8, power output portion 300 is single reduction gear unit Structure, specifically this single-stage speed reducing mechanism is chain-drive mechanism or tape handler.When power output portion 300 is chain-drive mechanism Or driven sprocket or driven pulley can be located on differential mechanism 100 during tape handler.Alternatively, single-stage speed reducing mechanism also may be used Think single gear reductions mechanism, infinite speed reduction mechanism can be metal band type stepless speed reducer.

Depending on the concrete form in power output portion 300 can be according to the real needs of power drive system 1000, so that power The scope of application of drive system 100 is wider.

Describe a specific embodiment of the power drive system 1000 according to the present invention referring to Fig. 1 in detail.As Fig. 1 Shown, power drive system 1000 includes electromotor 200, power input shaft 1, the first motor generator MG1, the second electricity Dynamic electromotor MG2, first planet gear mechanism P1, the second planetary gears P2, power output portion 300, the second clutch Device and the 3rd arrangement of clutch.

The bent axle of electromotor 200, power input shaft 1, the rotor 2 of the first motor generator MG1, the second motor generator MG2 Rotor 11, first planet gear mechanism P1 and the second planetary gears P2 is coaxially disposed.

The bent axle of electromotor 200 is connected with power input shaft 1, and the rotor 2 of the first motor generator MG1 passes through the second clutch Device optionally with power input shaft 1 synchronous axial system, the sun gear 3 of first planet gear mechanism P1 is rigidly attached to dynamic On power input shaft 1, the gear ring 4 of first planet gear mechanism P1 is rigidly attached on the rotor 2 of the first motor generator MG1, The planet carrier 6 of first planet gear mechanism P1 is rigidly connected with the sun gear 8 of the second planetary gears P2, the second planet The sun gear 8 of gear mechanism P2 optionally rotor 11 synchronous axial system with the second motor generator MG2, the second planet The gear ring 10 of gear mechanism P2 is rigidly attached on the rotor 11 of the second motor generator MG2, the second planetary gears The planet carrier 12 of P2 and power output portion 300 link, and the planet carrier 6 of first planet gear mechanism P1 and the second planet tooth The sun gear 8 of wheel mechanism P2 is all optionally same by the rotor 11 of the 3rd arrangement of clutch and the second motor generator MG2 Step rotates.

As shown in figure 1, the second arrangement of clutch includes the first active part 21 and the first secondary part 22, the first active part 21 and the first secondary part 22 optionally synchronous axial system, power input shaft 1 is rigidly connected with the first secondary part 22, The rotor 2 of the first motor generator MG1 is rigidly connected with the first active part 21, the rotor 2 of the first motor generator MG1 On power input shaft 1, that is, the rotor 2 of the first motor generator MG1 is hollow structure to empty set and power input shaft 1 passes through The hollow space of the rotor 2 of the first motor generator MG1.The arrangement space of power drive system 1000 thus can be saved, So that it is arranged more compact, and hollow structure can save manufacturing cost.

Specifically, the second arrangement of clutch has joint and disconnects two kinds of working conditions, when the second arrangement of clutch engages, the One active part 21 is engaged with the first secondary part 3 and synchronous axial system, so that power input shaft 1 and the first motor generator Rotor 2 synchronous axial system of MG1；When second arrangement of clutch disconnects, the first active part 21 is separated with the first secondary part 3, So that power input shaft 1 is separated with the rotor 2 of the first motor generator MG1, respective self-movement.

As shown in figure 1, the 3rd arrangement of clutch includes the second active part 31 and the second secondary part 32, the second active part 31 and the second secondary part 32 optionally synchronous axial system, the rotor 11 of the second motor generator MG2 and the second initiative part Points 31 are rigidly connected, rotor 11 empty set of the second motor generator MG2 on power input shaft 1, i.e. the second dynamoelectric and power generation The rotor 11 of machine MG2 is the hollow bulb of the rotor 11 that hollow structure and power input shaft 1 pass through the second motor generator MG2 Point.The arrangement space of power drive system 1000 thus can be saved so as to arrangement is more compact, and hollow structure can be saved Manufacturing cost.

The planet carrier 6 of first planet gear mechanism P1 passes through first axle 7 on power input shaft 1 for the empty set and the second follower Points 32 are rigidly connected, as shown in figure 1, first axle 7 be quill shaft and empty set on power input shaft 1 so that the first row The rotor 11 optionally synchronous axial system of the planet carrier 6 of star gear mechanism P1 and the second motor generator MG2, the second row The sun gear 8 of star gear mechanism P2 is rigidly attached in first axle 7, so that the planet carrier of first planet gear mechanism P1 6 are rigidly connected by first axle 7 with the sun gear 8 of the second planetary gears P2, thus also by the second planet tooth The wheel sun gear 8 of mechanism P2 and the rotor 11 optionally synchronous axial system of the second motor generator MG2.

In short, the rotor 11 of the second motor generator MG2 be hollow structure, first axle 7 empty set on power input shaft 1, It is rigidly connected in first axle 7 and have the sun gear 8 of the second planetary gears P2, the second secondary part 32 and first planet tooth The planet carrier 6 of wheel mechanism P1.

In other optional embodiments, as shown in figure 13, the gear ring 4 of first planet gear mechanism P1 is existed by empty set First axle 7 on power input shaft 1 is rigidly connected with the second secondary part 32.

As shown in figure 1, in the axial direction of power input shaft 1, the second secondary part 32 is located at the second planetary gears P2 Sun gear 8 and the planet carrier 6 of first planet gear mechanism P1 between, thus more between power drive system 1000 Axial space.

Specifically, the 3rd arrangement of clutch has joint and disconnects two kinds of working conditions, when the 3rd arrangement of clutch engages, the Two active parts 31 are engaged with the second secondary part 32 and synchronous axial system, so that the planet carrier of first planet gear mechanism P1 6 and second planetary gears P2 sun gear 8 and the second motor generator MG2 rotor 11 synchronous axial system；3rd When arrangement of clutch disconnects, the second active part 31 is separated with the second secondary part 32, so that first planet gear mechanism P1 Planet carrier 6 and the sun gear 8 of the second planetary gears P2 separate with the rotor 11 of the second motor generator MG2, Each self-movement.

It is understood that respective self-movement includes resting state in foregoing description, empty set represents part on axle for the empty set Can be movable relatively with axle, that is, part can rotate around the axis rather than synchronous axial system together with axle.

As shown in figure 1, power output portion 300 is two reduction gear, this two reduction gear includes intermeshing first Driving gear 13 and the first driven gear 14 and two grades of driving gears 15, the first driving gear 13 empty set inputs in power On axle 1, and the first driving gear 13 is connected with the planet carrier 12 of the second planetary gears P2 and can be with the second planetary gear Planet carrier 12 synchronous axial system of mechanism P2, specifically, the first driving gear 13 passes through empty set on power input shaft 1 the Two axles 18 are connected with the planet carrier 12 of the second planetary gears P2, and that is, the second axle 18 is quill shaft, power input shaft 1 Hollow space through the second axle 18.

In other optional embodiments, as shown in Fig. 9 and Figure 14, it is defeated in power that the first driving gear 13 passes through empty set The second axle 18 entering on axle 1 is connected with the gear ring 10 of the second planetary gears P2.

Further, the first driven gear 14 and two grades of driving gears 15 be coaxially disposed and can synchronous axial system, that is, first is driven Gear 14 and two grades of driving gears 15 are all rigidly attached on jackshaft 17 and the interval setting along in the axial direction of jackshaft 17, Two grades of driving gears 15 are suitable to engage with the differential mechanism driven gear 16 of differential mechanism 100, thus the portion 300 that outputs power is defeated The power going out is exported to the wheel of vehicle by differential mechanism 100.

Referring to the annexation of each part of above-mentioned power drive system 1000, describe in detail according to embodiments of the present invention The different working modes that power drive system 1000 has, the such as first dynamic branch pattern, the second dynamic branch pattern, Three dynamic branch patterns, electric-only mode, the first pure fuel oil pattern and the second pure fuel oil pattern, the first power generation in parking pattern and Second power generation in parking pattern.

When power drive system 1000 is in different working modes, the kinestate of each part is as shown in table 1：

Table 1：

Describe each mode of operation of power drive system 1000 according to embodiments of the present invention with reference to table 1 in detail：

1), the first dynamic branch pattern is input power shunt mode：

When power drive system 1000 is in the first dynamic branch pattern, electromotor 200 works, the first motor generator MG1 It is in generating state or close machinery dotted state for electromotor and the second motor generator MG2 is in driving shape for motor State, the second arrangement of clutch disconnects and the 3rd arrangement of clutch engages.

Specifically, due to second arrangement of clutch disconnect and the 3rd arrangement of clutch engage, the first motor generator MG1 with start The power of machine 200 couples in first planet gear mechanism P1, and the first motor generator MG1 is responsible for speed governing, the second dynamoelectric and power generation Machine MG2 is responsible for the power after first planet gear mechanism P1 coupling is carried out adjusting to turn round.

Wherein first motor generator MG1 is responsible for speed governing and refers to：Electromotor 200 drives first planet by power input shaft 1 The planet carrier 6 of gear mechanism P1 rotates, and the power of electromotor 200 realizes dynamic branch in first planet gear mechanism P1, I.e. a part of power drives the first motor generator MG1 to generate electricity by sun gear 5 and is delivered to second electronic with electrical power path Motor MG2, another part power mechanically exports from planet carrier 6.Due to first planet gear mechanism P1 sun gear 5, Between planet carrier 6 and gear ring 4, rotating speed is interrelated, therefore electromotor 200 can be maintained at the interval operation of economic speed, Pass through the continuous rotating speed changing the first motor generator MG1 in certain range of speeds, thus the output speed of planet carrier 6 can With consecutive variations, realize electric controlling stepless variable speed.Engine speed is decoupled with speed, so that the rotating speed of electromotor 200 is in all the time Fuel-efficient rotating speed is interval, and the first motor generator MG1 electricity can be used for driving the second motor generator MG2, it is to avoid the loss of discharge and recharge.

Second motor generator MG2 is responsible for the power after first planet gear mechanism P1 coupling is carried out adjusting torsion to refer to：By In being that power coupling, first planet gear mechanism are carried out by first planet gear mechanism P1 in this input power shunt mode Three rotating elements (i.e. sun gear 3, planet carrier 6 and gear ring 4 or power input being connected with sun gear 3 of structure P1 Axle 1, the sun gear 8 of the second planetary gears P2 being connected with planet carrier 6 and be connected with gear ring 4 first electronic The rotor 2 of motor MG1) although the decoupling of electromotor 200 rotating speed and speed can be realized, three rotating element rotating speeds It is proportional relation, moment of torsion is also (being expressed as torsion lever) of proportional relation, the therefore power drive system of the present invention 1000 need the second motor generator MG2 to carry out mending torsion after the first motor generator MG1 realizes the speed governing of electromotor 200 The requirement of the dynamic property of system could preferably be met.

This input power shunt mode be applied to low speed or speed operation, now the first motor generator MG1 be in generating or Close to the state of mechanical. points, so not only guarantee that electromotor 200 always works in the higher rotating speed interval of efficiency, avoid simultaneously The larger electrical power circulation of system occurs, thus the system that ensure that higher fuel economy.

It is to be appreciated that speed may be considered low speed or middle speed operation in below 80km/h, this operating mode is especially suitable For city operating mode.Mechanical. points are the point that motor generator rotating speed is when zero, and now power drive system 1000 does not have electricity Power cycle, when the first motor generator MG1 is in mechanical. points, system whole efficiency is optimal.

Wherein, electrical power circulation refers to：When speed slowly rises to high speed from low speed, the first motor generator MG1 sends out Speed governing when electric is insufficient for speed demand, now must make the first motor generator MG1 reversion, is changed into from electromotor Motor, is in other words changed into driving condition by generating state and could meet speed demand, at this moment because the first motor generator MG1 is in driving condition, by first planet gear mechanism P1 moment of torsion distribution proportional the reason, the second motor generator MG2 Need to absorb a part of moment of torsion, even if the second motor generator MG2 is in generating state, now the second motor generator MG2 Electricity drives for the first motor generator MG1, so just creates electrical power circulation, it is electronic that electrical power circulates in second Electromotor MG2 (electricity gives the first motor generator MG1) the first motor generator MG1 (consumes the second motor generator The electricity of MG2) first planet gear mechanism P1 (coupling with electromotor 200) second motor generator MG2 (electricity To the first motor generator MG1) circulation in always consumed energy so that system capacity is constantly lost, cause system effectiveness Lowly.

2), the second dynamic branch pattern exports dynamic branch pattern：

When power drive system 1000 is in the second dynamic branch pattern, electromotor 200 works, the first motor generator MG1 It is in generating state for electromotor and the second motor generator MG2 is in driving condition for motor, the second arrangement of clutch Engage and the 3rd arrangement of clutch disconnects.

Specifically, the second arrangement of clutch engages, the 3rd arrangement of clutch disconnection, the first motor generator MG1 and electromotor 200 Power directly couple in first planet gear mechanism P1, the first motor generator MG1 is responsible for adjusting and turns round, and the second dynamoelectric and power generation Machine MG2 is responsible for carrying out speed governing to the power after first planet gear mechanism P1 coupling.

Wherein first motor generator MG1 is responsible for adjusting torsion to refer to：Because the second arrangement of clutch engages, first planet gear mechanism The gear ring 4 of the sun gear 3 of P1 and first planet gear mechanism P1 is rigidly connected, according to the operation principle of planetary gears, First planet gear mechanism P1 is as a unitary rotation, so that electromotor 200 directly drives the first motor generator MG1 to enter Row generates electricity to absorb moment of torsion.And vehicle is at a high speed or high speed operating mode downward driving (such as speed 120km/h or higher) When, the first motor generator MG1 generates electricity to drive for the second motor generator MG2 and uses, that is, at the first motor generator MG1 It is that the second motor generator MG2 supplements electricity in generating state, it is to avoid electricity needs by set of cells as filling that medium produces Discharge loss.

Wherein second motor generator MG2 is responsible for carrying out speed governing to the power after first planet gear mechanism P1 coupling Refer to, because the 3rd arrangement of clutch disconnects, the second motor generator MG2 is motor rather than electromotor for driving condition, Thus the gear ring 10 of the sun gear 8 of the second planetary gears P2 and the second planetary gears P2 is input, and second Brakeless element in planetary gears P2, according to the operation principle of planetary gears, unpowered output, thus realize The speedy carding process of the planet carrier 12 of two planetary gears P2, because the planet carrier 12 of the second planetary gears P2 is permissible With wheel linkage, thus the 3rd actuated element here is wheel that is to say, that the speed governing master of the second motor generator MG2 If meeting the speedy carding process of wheel, at this moment due to being first motor generator MG1 the second motor generator MG2 second Planetary gears P2 wheel, will not produce big electrical power circulation, therefore be applied to high-speed working condition.

If it is to be appreciated that now the second motor generator MG2 is in generating state, not meeting the second planetary gear machine The Speed allotment relation of each element of structure P2.Thus not only guarantee that electromotor 200 always works in the higher rotating speed interval of efficiency, Also make the system to be easier to be operated near mechanical. points under this high-speed working condition, it is to avoid the larger electrical power circulation of system simultaneously Occur, thus ensure that splendid fuel economy.

Additionally, output dynamic branch pattern is more suitable for high speed or high speed operating mode, reason is as follows：High-speed working condition is typically not required to Torque output that will be too big, but need than the torque output under higher rotation speed, at this moment if with input power shunt mode Improper, so that turning round by first carrying out adjusting, then carry out speed governing.

3) the 3rd dynamic branch pattern is composite power shunt mode：

When power drive system 1000 is in the 3rd dynamic branch pattern, electromotor 200 works, the first motor generator MG1 It is motor or electromotor that is to say, that the first electricity can occur for motor or electromotor and the second motor generator MG2 Dynamic electromotor MG1 and the second motor generator MG2 simultaneously be motor or simultaneously be electromotor situation or first Another is electromotor for motor for one of motor generator MG1 and the second motor generator MG2, the second arrangement of clutch All disconnect with the 3rd arrangement of clutch.

Specifically, electromotor 200 works, and the second arrangement of clutch and the 3rd arrangement of clutch all disconnect, the first motor generator MG1 is first coupled in first planet gear mechanism P1 with the power of electromotor 200, and the first motor generator MG1 is responsible for tune simultaneously Speed and tune are turned round, and the second motor generator MG2 is responsible for first planet gear mechanism P1 in the second planetary gears P2 Power after coupling carries out speed governing again and adjusts torsion.

When system charge is sufficient, so that the first motor generator MG1 and the second motor generator MG2 is located simultaneously In driving condition, thus meeting the special limiting condition of vehicle, the operating mode such as such as high-speed passing.When system charge deficiency needs to mend During charging energy, generate electricity preferably by the first motor generator MG1, the working condition that the second motor generator MG2 drives, Thus avoiding the occurrence of big electrical power circulation.

Because the second arrangement of clutch and the 3rd arrangement of clutch all disconnect, now the first motor generator MG1 and the first dynamoelectric and power generation Machine MG1 all realizes the rotating speed coupling of planetary gears, and system has two mechanical. points respectively the first motor generator MG1 to turn Speed is point when zero, or the point that the second motor generator MG2 rotating speed is zero.Each mechanical. points, system can be kept away Exempt from circulating power and reach good fuel economy.But system is due to this rotating element not having braking member to be zero by rotating speed Locking, then need to brake using motor generator, and this motor generator now reaching mechanical. points does not have rotating speed but to there is moment of torsion, At this moment certain power attenuation can more or less be produced.At this time system dynamic output can be determined by operating mode, two electronic Electromotor all can export can also speed governing, the speed ratio specifically how selecting to need to consider two planetary gears and two electricity Power of dynamic electromotor etc..For example：During the low torsion of low speed, two motors can be selected simultaneously to generate electricity, electromotor 200 is exported Rotating speed carries out speed governing；At a high speed during high torsion, two motor generator can be driven, not only realize high rotating speed output and also can simultaneously Realize good torque output；And middle low speed is low when turning round output, a motor generator can be allowed close to machinery point-like with selectivity State and another motor generator power generation operation；Then can consider during high torsion at a high speed to allow a motor generator close to machinery point-like State and another motor generator driving work.These operating modes specifically need for by motor generator rotating speed, planetary gear machine The speed ratio of structure, torque relationship and rotation speed relation are determining.

For to sum up, above-mentioned three kinds of dynamic branch patterns are applied to different operating modes, can lead in power drive system 1000 The working condition crossing change the second arrangement of clutch, the 3rd arrangement of clutch and two motor generator neatly switches, and this just protects The fuel economy having demonstrate,proved whole power drive system 1000 reaches most preferably.

Specifically, general power drive system only has one of above-mentioned three kinds of mode of operations or two kinds, and each pattern Between switching control complicated, and each pattern be respectively provided with its inapplicable operating mode and under this inapplicable operating mode fuel economy poor, and Power drive system 1000 according to embodiments of the present invention, by input power shunt mode, output dynamic branch pattern and compound Dynamic branch pattern Three models combine, wherein input power shunt mode be applied to low speed or low speed work Condition, output dynamic branch pattern are applied to high speed or high speed operating mode, and composite power shunt mode overcomes input power and divides Stream mode and the deficiency of output dynamic branch pattern, can meet the special operation conditions such as high-speed passing, and by changing the second clutch The state of device, the joint of the 3rd arrangement of clutch and disconnection realizes power drive system 1000 in input power shunt mode, defeated Go out power shunt mode and the switching of composite power shunt mode, structure is simple and controls easily, thus achieves PWTN System 1000 all can guarantee that good fuel economy under each operating mode.

4), electric-only mode

When power drive system 1000 is in electric-only mode, electromotor 200 does not work, the first motor generator MG1 not work Make, the second motor generator MG2 is motor, the second arrangement of clutch disconnects and the 3rd arrangement of clutch engages.

Because the 3rd arrangement of clutch engages, thus make sun gear 8 and second planetary gears of the second planetary gears P2 One of the gear ring 10 of P2 and planet carrier 12 are bonded to synchronous axial system, simultaneously the rotor 11 of the second motor generator MG2 It is bonded to synchronous axial system with another in the gear ring 4 and planet carrier 6 of first planet gear mechanism P1, according to planetary gear machine The operation principle of structure, the gear ring 10 of the sun gear 8 of the second planetary gears P2 and the second planetary gears P2 and planet Another common rotation in frame 12, thus driving the first driving gear 13 to rotate, the output of the second motor generator MG2 Power by another in the gear ring 10 and planet carrier 12 of the second planetary gears P2, the first driving gear 13, First 14, two grades of driven gear driving gear 15, differential mechanism driven gear 16 pass to the operating of wheel driving moment.

Due to one of the gear ring 4 of first planet gear mechanism P1 and planet carrier 6 with the second planetary gears P2 too Sun wheel 8 is rigidly connected, and the second arrangement of clutch disconnects, thus in the gear ring 4 and planet carrier 6 of first planet gear mechanism P1 One meeting servo-actuated, now one in the gear ring 4 and planet carrier 6 of first planet gear mechanism P1 can drive Another rotation described in the gear ring 4 and planet carrier 6 of one planetary gears P1, specifically, due to first planet gear The sun gear 3 of mechanism P1 and power input shaft 1 are rigidly connected, and rub by the cylinder that is connected with the bent axle of electromotor 200 Wiping power can ensure that the bent axle of electromotor 200 will not rotate, and that is, power input shaft 1 will not rotate, therefore first planet gear Another idle running described in the gear ring 4 and planet carrier 6 of mechanism P1.

5), the first pure fuel oil pattern

When power drive system 1000 is in the first pure fuel oil pattern, electromotor 200 works, the first motor generator MG1 and Second motor generator MG2 does not all work, and the second arrangement of clutch and the 3rd arrangement of clutch all engage.

Specifically, the first motor generator MG1 and the second motor generator MG2 does not work, because the second arrangement of clutch connects Close, by the rotor 2 of the sun gear 3 of first planet gear mechanism P1 and the first motor generator MG1 all with power input shaft 1 It is bonded to synchronous axial system, and make the gear ring 4 of first planet gear mechanism P1 engage synchronous axial system with power input shaft 1, according to The operation principle of planetary gears, first planet gear mechanism P1 is as a unitary rotation.

Because the 3rd arrangement of clutch engages, thus make sun gear 8 and the second motor generator MG2 of the second planetary gears P2 Rotor 11 be bonded to synchronous axial system, the tooth of the sun gear 8 of the second planetary gears P2 and the second planetary gears P2 Circle 10 is bonded to synchronous axial system, and the sun of the planet carrier 6 of first planet gear mechanism P1 and the second planetary gears P2 Wheel 8 is rigidly connected, according to the operation principle of planetary gears, the sun gear 8 of the second planetary gears P2 and the second row Planet carrier 12 common rotation of star gear mechanism P2, that is, the second planetary gears P2 is as a unitary rotation, thus carrying Dynamic first driving gear 13 rotates, and the power of electromotor 200 output passes through first planet gear mechanism P1, the second planet tooth The wheel planet carrier 12 of mechanism P2, the first driving gear 13,14, two grades of driving gears 15 of the first driven gear, differential mechanism from Moving gear 16 passes to the operating of wheel driving moment.

It is to be appreciated that in the first pure fuel oil pattern, one and only one speed ratio of power of electromotor 200 output drives car Wheel, that is, under this first pure fuel oil pattern, the single gear output mode of power drive system 1000 only, this pattern is not Need to use motor generator, motor generator is merely only idle running, thus this pattern is only relatively applied to electromotor 200 Relatively inexpensive rotating speed is interval.

Especially, under this first pure fuel oil pattern, though the power of electromotor 200 output is through Multi-stage transmission Chain conveyer, this When two groups of planetary gears function only as the transmission being equivalent to spline, and if arrangement of clutch adopts dry clutch, move Power drive system 1000 still can obtain Billy with the electromotor 200 of motor generator speed governing and electronic under some specific operations Higher fuel economy during electric generator hybrid power output mode.

Due to the first pure fuel oil pattern, the gear pair that driving-chain passes through is few, transmission efficiency, do not have motor generator to generate electricity and The operating mode (this two parts can lose the efficiency of the 80% about of electromotor 200) driving, does not have battery set charge/discharge feelings simultaneously Condition, therefore under this specific operation, electromotor 200 work fuel economy is good, thus this first pure fuel oil pattern have certain excellent More property.

Wherein specific operation will be according under the first pure fuel oil pattern, from the speed ratio of the driving-chain to wheel for the bent axle of electromotor 200 To determine, and the speed ratio of driving-chain determines the moment of torsion interval that speed and electromotor 200 are realized.For example, this speed ratio is similar to normal If 3 gears of rule vehicle, then just good in this vehicle speed intervals fuel economy being suitable for 3 gears, that is, it is applied to this Operating mode.

Certainly, arrangement of clutch can also adopt wet clutch, but stir oil using wet clutch due to meeting and be likely to result in portion The loss of point energy, but this loss is also not too large, is unlikely to have influence on the excellent of under this specific operation fuel-economy More property.

6) the second pure fuel oil pattern

When power drive system 1000 is in the second pure fuel oil pattern, electromotor 200 works, the first motor generator MG1 and At least one of second motor generator MG2 is electromotor, and the second arrangement of clutch and the 3rd arrangement of clutch all engage.

Specifically, the first motor generator MG1 and one both the second motor generator MG2 or be simultaneously in generating state, Supplement electricity for system.Electromotor 200 works, and the second arrangement of clutch and the 3rd arrangement of clutch all engage, first planet gear As a unitary rotation and the second planetary gears P2 is as a unitary rotation, electromotor 200 power warp for mechanism P1 Cross first planet gear mechanism P1, the second planetary gears P2, the first driving gear 13, the first driven gear 14, two Level driving gear 15, differential mechanism driven gear 16 pass to the operating of wheel driving moment.

Although it is understood that under this second pure fuel oil pattern, the first motor generator MG1 and the second motor generator At least one of MG2 is electromotor, but the power resources of power drive system 1000 are only electromotor 200.

7) the first power generation in parking pattern, i.e. small-power power generation in parking pattern, now the only first motor generator MG1 individually generate electricity

When power drive system 1000 is in the first power generation in parking pattern, due to parking, that is, wheel is motionless, the second planetary gear The planet carrier 12 of mechanism P2 is braked, and electromotor 200 works, and the first motor generator MG1 is electromotor and second electronic Motor MG2 does not work, and the second arrangement of clutch engages and the 3rd arrangement of clutch disconnects.

Specifically, vehicle passes through electronic parking system by wheel lock up, and electromotor 200 works, and the second arrangement of clutch engages, Electromotor 200 directly drives the first motor generator MG1 action to supplement electricity to generate electricity for system via power input shaft 1.

Because the second arrangement of clutch engages, first planet gear mechanism P1 is as a unitary rotation, i.e. first planet gear mechanism The planet carrier 6 of structure P1 is with power input shaft 1 synchronous axial system although the 3rd arrangement of clutch disconnects, but due to the second planetary gear The sun gear 8 of mechanism P2 is rigidly connected with the planet carrier 6 of first planet gear mechanism P1, and the second planetary gears P2 Planet carrier 12 brake, thus result in the second motor generator MG2 servo-actuated.

8) the second power generation in parking pattern, i.e. high-power power generation in parking pattern, now the first motor generator MG1 and second electronic Electromotor MG2 all generates electricity

When power drive system 1000 is in the second power generation in parking pattern, electromotor 200 works, the second planetary gears P2 Planet carrier 12 brake, the first motor generator MG1 and the second motor generator MG2 are electromotor, the second arrangement of clutch Engage and the 3rd arrangement of clutch disconnects.

Specifically, vehicle passes through electronic parking system by wheel lock up, and electromotor 200 works, and the second arrangement of clutch engages, Electromotor 200 directly drives the first motor generator MG1 action to supplement electricity to generate electricity for system.

Because the second arrangement of clutch engages, first planet gear mechanism P1 is as a unitary rotation, i.e. first planet gear mechanism The planet carrier 6 of structure P1 is with power input shaft 1 synchronous axial system although the 3rd arrangement of clutch disconnects, but due to the second planetary gear The row sun gear 8 of mechanism P2 is rigidly connected with the planet carrier 6 of first planet gear mechanism P1, and the second planetary gears The planet carrier 12 of P2 is braked, thus the second motor generator MG2 is also driven generating to supplement energy for system by electromotor 200.

For functionally, this power drive system 1000 is by 200, two motor generator of electromotor, two planetary gears Mechanism and two arrangement of clutch composition, by both having realized the single gear output of electromotor 200 to the control of two arrangement of clutch With pure electronic output, can also neatly realize input power shunt mode under hybrid power operating mode, output power divides simultaneously Stream mode and the mutual switching of composite power shunt mode.By control the second arrangement of clutch, the 3rd arrangement of clutch, first Motor generator MG1 and the different working condition of the second motor generator MG2, can be under different operating modes, for guaranteeing car load Optimal fuel economy, comfortableness or dynamic property demand are thus select the different mode of operation of hybrid power system.

That is, connect in 200, two motor generator of electromotor, two planetary gears and two arrangement of clutch closing On the basis of system, by with the second arrangement of clutch of different working condition, the 3rd arrangement of clutch, the first motor generator MG1 With the combination of the second motor generator MG2, can at least realize above-mentioned eight kinds of mode of operations, and every kind of mode of operation is all applicable Ensure that the demand of car load optimal fuel economy, comfortableness or dynamic property in different operating modes and in this applicable working condition, thus move The structure of power drive system 1000 is simple, vdiverse in function and is applied on vehicle, can make the vehicle can when moving under each operating mode There is good fuel economy, comfortableness and dynamic property.

Especially, under different operating modes, coupling possesses the work of the splendid fuel economy of car load, comfortableness or dynamic property demand Pattern, each pattern switching controls thinking simple, car travel mode variation, maximally by splendid fuel economy with relax Adaptive covers all driving cycles of vehicle.For structure, as hybrid power coupling unit, it has concurrently planetary gears Transmission efficiency, realize that ratio coverage is wide and the advantages of compact conformation.

In short, power drive system 1000 according to embodiments of the present invention, different work can be selected according to different operating modes Pattern, and fuel economy is high, system effectiveness is high, electrical power circulation is little, each mode switching structure is simple simultaneously.

Power drive system 1000 shown in Fig. 9 is differed only in the power drive system 1000 of Fig. 1, power output Portion 300, the second motor generator MG2 are different from the annexation of the second planetary gears P2, specifically, the second row The planet carrier 12 of star gear mechanism P2 is rigidly attached on the rotor 11 of the second motor generator MG2, power output portion 300 Link with will be electronic to electromotor 200, the first motor generator MG1 and second with the gear ring 10 of the second planetary gears P2 The power output of at least one of electromotor MG2, those skilled in the art can according to the work process of mode of operation each in Fig. 1, Derive the mode of operation of the power drive system 1000 shown in Fig. 9, here no longer describes in detail.

Power drive system 1000 shown in Figure 13 is differed only in the power drive system 1000 of Fig. 1, first planet Gear mechanism P1 is different from the annexation of the first motor generator MG1 and the second planetary gears P2, specifically, The planet carrier 6 of first planet gear mechanism P1 is rigidly attached on the rotor 2 of the first motor generator MG1, the second planet tooth The sun gear 8 of wheel mechanism P2 is rigidly connected with the gear ring 4 of first planet gear mechanism P1, and those skilled in the art can basis The work process of each mode of operation in Fig. 1, derives the mode of operation of the power drive system 1000 shown in Figure 13, here No longer describe in detail.

Power drive system 1000 shown in Figure 14 and the difference of the power drive system of Fig. 1 are first planet gear mechanism P1 is different from the annexation of the first motor generator MG1 and the second planetary gears P2, and power output portion 300, Two motor generator MG2 are different from the annexation of the second planetary gears P2.Specifically, first planet gear mechanism The planet carrier 6 of P1 is rigidly attached on the rotor 2 of the first motor generator MG1, the sun of the second planetary gears P2 Wheel 8 is rigidly connected with the gear ring 4 of first planet gear mechanism P1, and planet carrier 12 rigidity of the second planetary gears P2 connects It is connected on the rotor 11 of the second motor generator MG2, the gear ring 10 of power output portion 300 and the second planetary gears P2 Linkage with by the power output of at least one of electromotor 200, the first motor generator MG1 and the second motor generator MG2, Those skilled in the art can derive the power drive system shown in Figure 14 according to the work process of mode of operation each in Fig. 1 1000 mode of operation, here no longer describes in detail.

In short, in the power drive system 1000 shown in Fig. 1-Fig. 8, two planetary gears are all using planet carrier as defeated Go out, in the power drive system 1000 shown in Fig. 9-Figure 12, first planet gear mechanism P1 is exported with planet carrier 6, and Second planetary gears P2 is exported with gear ring 10, in the power drive system 1000 shown in Figure 13, first planet gear Mechanism P1 is exported with gear ring 4, and the second planetary gears P2 is exported with planet carrier 12, the power transmission shown in Figure 14 In system 1000, two planetary gears are all using gear ring as output.

Further, as shown in Fig. 1-Figure 14, the rotor 2 of the first motor generator MG1 and the second motor generator MG2 Rotor be hollow structure, first planet gear mechanism P1 and the second arrangement of clutch are each provided at the first motor generator MG1's In the hollow structure of rotor 2, the rotor 11 of the second motor generator MG2 has hollow structure, the second planetary gears P2 In the hollow structure of the rotor 11 being each provided at the second motor generator MG2 with the 3rd arrangement of clutch.Such set-up mode, greatly Save greatly the axial space of power drive system 1000, make full use of radial space.

Advantageously, the second motor generator MG2 is located between electromotor 200 and the first motor generator MG1, the second planet Gear mechanism P2, the 3rd arrangement of clutch, first planet gear mechanism P1 and the second arrangement of clutch and electromotor distance successively Increase.

More specifically, as shown in Fig. 1-Figure 14, one end that power input shaft 1 is connected from the bent axle with electromotor 200 to Away from bent axle one end sequentially pass through the second planetary gears P2, the 3rd arrangement of clutch, first planet gear mechanism P1 with Second arrangement of clutch is connected.

Alternatively, electromotor 200 can horizontal can also be longitudinal.

Such arrangement, in electromotor 200 horizontal arrangement, makes power input shaft 1 especially extend, and power inputs One end of axle 1 is connected with the bent axle of electromotor 200, one end away from bent axle of power input shaft 1 and the second arrangement of clutch with And first planet gear mechanism P1 is connected, ensured as far as possible that differential mechanism 100 close to car load laterally to turning on centrage, Avoid jackshaft cause different in size phenomenon, it is to avoid deviation phenomenon in vehicle, lift the handling of vehicle.

Alternatively, reverse plate can be provided between one end away from bent axle of power input shaft 1 and the second arrangement of clutch, subtract Shake device or flywheel.

More specifically, as shown in Fig. 1-Figure 12, the gear ring 10 with the second planetary gears P2 in power output portion 300 With another part being connected (the such as Fig. 1-Fig. 4, Fig. 9-Figure 10 in the planet carrier 12 of the second planetary gears P2 In the first driving gear 13 or the drivewheel in Fig. 5-Fig. 8) be located axially at electromotor 200 in power input shaft 1 And the second planetary gears P2 between, thereby further ensured that differential mechanism 100 close to car load laterally to turning on centrage. Further, the two grades of driving gears 15 engaging with differential mechanism driven gear 16 are located at the side near electromotor 200, from And further ensured that differential mechanism 100 close to car load laterally to turning on centrage.

Specifically, the second axle 18 is located between electromotor 200 and the second planetary gears P2, that is, be located at electromotor 200 And the second motor generator MG2 between.

Certainly, when electromotor 200 is longitudinal, such arrangement it is also possible to make power drive system 1000 structure tighter Gather, make full use of the axially and radially space of power input shaft 1.

As shown in Fig. 3, Fig. 4, Fig. 7 and Fig. 8, power drive system 1000 can also include the first arrangement of clutch C1, the One arrangement of clutch C1 is located between the bent axle of electromotor 200 and power input shaft 1, by arranging the first arrangement of clutch C1, When not needing electromotor 200 work, it is to avoid so that the bent axle of electromotor 200 is sent out during the first motor generator MG1 power output The servo-actuated phenomenon of life, it is to avoid unnecessary energy loss, is conducive to lifting the work efficiency of power drive system 1000.Optional Ground, the first arrangement of clutch C1 is first clutch.

Power drive system 1000 according to embodiments of the present invention, in the first motor generator MG1, first planet gear mechanism P1, the annexation of the second motor generator MG2, the second planetary gears P2 and power output portion 300 and work On the basis of making state, the first arrangement of clutch C1 is set between the bent axle and power input shaft 1 of electromotor 200, not only real Showed multiple different mode of operations, and each mode of operation be applied to different operating modes, and ensure that splendid fuel economy and Comfortableness, and mode switching structure is simple, also when not needing electromotor 200 work, it is to avoid the first motor generator MG1 Servo-actuated phenomenon in the bent axle making electromotor 200 during power output, it is to avoid unnecessary energy loss there is, is conducive to lifting dynamic The work efficiency of power drive system 1000.

In sum, this power drive system 1000 functional realiey enrich, compact conformation, reasonable in design, have concurrently simultaneously and be directed to The mode switching manner of splendid fuel economy and comfortableness is guaranteed, scheme is reliable, practical value is high under each operating mode.

Additionally, power drive system 1000 according to embodiments of the present invention, in the first motor generator MG1, first planet tooth Wheel mechanism P1, the annexation of the second motor generator MG2, the second planetary gears P2 and power output portion 300 And on the basis of working condition, creatively arrange the first motor generator MG1, first planet gear mechanism P1, second The position of motor generator MG2, the second planetary gears P2 and power output portion 300, not only achieve multiple not Same mode of operation, and each mode of operation is applied to different operating modes, and ensure that splendid fuel economy and comfortableness, and Mode switching structure is simple, also makes the compact overall structure of power drive system 1000, arrangement space is little, and structure is simply easily real Existing.

In short, power drive system 1000 according to embodiments of the present invention, mode of operation is various and each mode of operation switching letter Single, particularly innovatively will be organic to input power shunt mode system, output dynamic branch pattern and composite power shunt mode Ground combines, thus tackling various operating modes, splendid fuel economy is realized with reference to the respective advantage of three in subversiveness ground, And the structure simple-arranged of realization is compact.

According to embodiments of the present invention vehicle is briefly described below, this vehicle includes above-mentioned power drive system 1000, thus There is arrangement compact, the advantages of fuel economy is high.

In describing the invention it is to be understood that term " " center ", " longitudinal ", " horizontal ", " length ", " width ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", the orientation of instruction such as " clockwise ", " counterclockwise ", " axial ", " radially ", " circumferential " or position relationship be based on Orientation shown in the drawings or position relationship, are for only for ease of the description present invention and simplify description, rather than instruction or hint institute The device referring to or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this Bright restriction.

Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or hint relative importance Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed Or implicitly include at least one this feature.In describing the invention, " multiple " are meant that at least two, such as two Individual, three etc., unless otherwise expressly limited specifically.

In the present invention, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", etc. term should It is interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral；Can be to be mechanically connected, Can also be to electrically connect or can communicate each other；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, Ke Yishi The connection of two element internals or the interaction relationship of two elements, limit unless otherwise clear and definite.General for this area For logical technical staff, above-mentioned term concrete meaning in the present invention can be understood as the case may be.

In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can Being the first and second feature directly contacts, or the first and second features pass through intermediary mediate contact.And, the One feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or Oblique upper, or it is merely representative of fisrt feature level height higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be fisrt feature immediately below second feature or obliquely downward, or it is special to be merely representative of first Levy level height and be less than second feature.

In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. mean specific features with reference to this embodiment or example description, structure, material or Feature is contained at least one embodiment or the example of the present invention.In this manual, the schematic representation to above-mentioned term Necessarily it is directed to identical embodiment or example.And, the specific features of description, structure, material or feature are permissible Any one or more embodiments or example combine in an appropriate manner.Additionally, in the case of not conflicting, ability The feature of the different embodiments described in this specification or example and different embodiment or example can be entered by the technical staff in domain Row combines and combines.

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

Claims (17)

1. a kind of power drive system is it is characterised in that include：

Electromotor；

Power input shaft, described power input shaft is connected with the bent axle of described electromotor；

First motor generator, the rotor of described first motor generator optionally with described power input shaft synchronous axial system；

Second motor generator；

First planet gear mechanism, the sun gear of described first planet gear mechanism is rigidly attached on described power input shaft, One of planet carrier of the gear ring of described first planet gear mechanism and described first planet gear is rigidly attached to described first On the rotor of motor generator；

The gear ring of the second planetary gears, the sun gear of described second planetary gears and described first planet gear mechanism It is rigidly connected with another in the planet carrier of described first planet gear mechanism, the sun gear of described second planetary gears The optionally rotor synchronous axial system with described second motor generator, the gear ring of described second planetary gears and described One of planet carrier of second planetary gears is rigidly attached on the rotor of described second motor generator；

The gear ring of power output portion, described power output portion and described second planetary gears and described second planetary gear machine Another linkage in the planet carrier of structure is with by described electromotor, described first motor generator and described second motor generator At least one of power output.

2. power drive system according to claim 1 is it is characterised in that the bent axle of described electromotor and described power It is provided with the first arrangement of clutch between input shaft.

3. power drive system according to claim 1 and 2 is it is characterised in that described power input shaft passes through second The arrangement of clutch optionally rotor synchronous axial system with described first motor generator；

The sun gear of described second planetary gears pass through the 3rd arrangement of clutch optionally with described second motor generator Rotor synchronous axial system.

4. power drive system according to claim 3 it is characterised in that described power drive system have first move Power shunt mode, the second dynamic branch pattern and the 3rd dynamic branch pattern；

When described power drive system is in the first dynamic branch pattern, described electromotor work, described first motor generator It is motor for electromotor and described second motor generator, described second arrangement of clutch disconnects and described 3rd arrangement of clutch connects Close；

When described power drive system is in the second dynamic branch pattern, described electromotor work, described first motor generator It is motor for electromotor and described second motor generator, described second arrangement of clutch engages and described 3rd arrangement of clutch breaks Open；

When described power drive system is in the 3rd dynamic branch pattern, described electromotor work, described first motor generator For motor or electromotor and described second motor generator is motor or electromotor, described second arrangement of clutch and described the Three arrangement of clutch all disconnect.

5. power drive system according to claim 3 it is characterised in that described power drive system have pure electronic Pattern；

When described power drive system is in electric-only mode, described electromotor does not work, described first motor generator not work Make, described second motor generator is motor, described second arrangement of clutch disconnects and described 3rd arrangement of clutch engages.

6. power drive system according to claim 3 it is characterised in that described power drive system to have first pure Fuel oil pattern and the second pure fuel oil pattern；

When described power drive system is in the first pure fuel oil pattern, the work of described electromotor, described first motor generator and Described second motor generator does not all work, and described second arrangement of clutch and described 3rd arrangement of clutch all engage；

When described power drive system is in the second pure fuel oil pattern, the work of described electromotor, described first motor generator and At least one of described second motor generator is electromotor, and described second arrangement of clutch and described 3rd arrangement of clutch all connect Close.

7. power drive system according to claim 3 is it is characterised in that described power drive system has first stays Car power generation mode and the second power generation in parking pattern；

When described power drive system is in the first power generation in parking pattern, the gear ring of described second planetary gears and described Another braking described in the planet carrier of two planetary gears, described electromotor works, and described first motor generator is Electromotor and described second motor generator does not work, described second arrangement of clutch engages and described 3rd arrangement of clutch disconnects；

When described power drive system is in the second power generation in parking pattern, described electromotor work, described second planetary gear machine In the planet carrier of the gear ring of structure and described second planetary gears described another braking, described first motor generator and Described second motor generator is electromotor, and described second arrangement of clutch engages and described 3rd arrangement of clutch disconnects.

8. power drive system according to claim 3 it is characterised in that the rotor of described first motor generator and The rotor of described second motor generator is hollow structure；

Described first planet gear mechanism and described second arrangement of clutch are each provided at the hollow of the rotor of described first motor generator In structure；

The rotor of described second motor generator has hollow structure, and described second planetary gears and described 3rd clutch fill Put in the hollow structure of rotor being each provided at described second motor generator.

9. power drive system according to claim 8 is it is characterised in that described second motor generator is positioned at described Between electromotor and described first motor generator.

10. power drive system according to claim 9 is it is characterised in that described second planetary gears, institute State the 3rd arrangement of clutch, described first planet gear mechanism and described second arrangement of clutch to increase successively with the distance of described electromotor Plus.

11. power drive systems according to claim 3 are it is characterised in that described second arrangement of clutch and described Three arrangement of clutch are clutch；Or

Described second arrangement of clutch and described 3rd arrangement of clutch are lock unit.

12. power drive systems according to claim 3 are it is characterised in that described power output portion is single-stage speed reducing Mechanism, two reduction gear or infinite speed reduction mechanism.

13. power drive systems according to claim 12 are it is characterised in that described power output portion is double reduction Mechanism, described two reduction gear includes：Intermeshing first driving gear and the first driven gear and two grades of driving tooths Wheel, described first driving gear empty set is on described power input shaft, and described first driving gear and described second planet tooth The gear ring of wheel mechanism be connected with described another in the planet carrier of described second planetary gears and can with described another together Step rotates, described first driven gear and described two grades of driving gears be coaxially disposed and can synchronous axial system, described two grades of driving tooths Wheel is suitable to engage with the differential mechanism driven gear of differential mechanism.

14. power drive systems according to claim 12 it is characterised in that described power output portion with described The gear ring of two planetary gears is with the described part that another is connected in the planet carrier of described second planetary gears in institute State being located axially between described electromotor and described second planetary gears of power input shaft.

15. power drive systems according to claim 3 are it is characterised in that described second arrangement of clutch includes first Active part and the first secondary part, described first active part and described first secondary part optionally synchronous axial system；

Described power input shaft is rigidly connected with described first secondary part；

The rotor of described first motor generator is rigidly connected with described first active part；

The rotor empty set of described first motor generator is on described power input shaft.

16. power drive systems according to claim 3 are it is characterised in that described 3rd arrangement of clutch includes second Active part and the second secondary part, described second active part and described second secondary part optionally synchronous axial system；

The rotor of described second motor generator is rigidly connected with described second active part, described second motor generator turn Sub- empty set is on described power input shaft；

Described another in the planet carrier of the gear ring of described first planet gear mechanism and described first planet gear mechanism passes through First axle on described power input shaft for the empty set is rigidly connected with described second secondary part, described second planetary gears Sun gear be rigidly attached in described first axle.

A kind of 17. vehicles are it is characterised in that include the power drive system according to any one of claim 1-16.