CN104276028B

CN104276028B - For vehicle power drive system and there is its vehicle

Info

Publication number: CN104276028B
Application number: CN201410044230.8A
Authority: CN
Inventors: 杨冬生; 廉玉波; 张金涛; 罗红斌
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2014-01-30
Filing date: 2014-01-30
Publication date: 2015-09-02
Anticipated expiration: 2034-01-30
Also published as: CN104276028A

Abstract

The invention discloses a kind of power drive system for vehicle and there is its vehicle.This power drive system comprises engine unit, gearbox unit, the first dynamotor, efferent and synchro.Wherein gearbox unit is suitable for optionally being connected with engine unit power coupling, first dynamotor is connected with gearbox unit power coupling, efferent is suitable for exporting the power from described gearbox unit, synchro is arranged to be suitable between efferent and gearbox unit selectively synchronous, thus exports described power to drive the wheel of described vehicle by described efferent.According to the power drive system of the embodiment of the present invention, the power that engine unit and/or the first dynamotor export can be exported from efferent by the synchronous effect of synchro, and the compact conformation of whole power drive system and control convenient.

Description

For vehicle power drive system and there is its vehicle

Technical field

The present invention relates to technical field of vehicle, especially relate to a kind of power drive system for vehicle and there is its vehicle.

Background technology

Along with the continuous consumption of the energy, the development and utilization of new forms of energy vehicle becomes a kind of trend gradually.Hybrid vehicle, as the one in new forms of energy vehicle, is driven by driving engine and/or motor, has various modes, can improve driving efficiency and fuel economy.

But in correlation technique known for inventor, the power drive system general structure in hybrid vehicle is complicated, and bulky, driving efficiency is on the low side, needs to control multiple gearshift power element when gear switches or pattern switches, and control policy is complicated simultaneously.

Summary of the invention

The present invention is intended to solve one of above-mentioned technical matters of the prior art at least to a certain extent.

For this reason, the present invention needs to provide a kind of power drive system for vehicle, and this power transmission system structure is compact, and driving efficiency is high and control is convenient.

Further, the present invention needs to provide a kind of vehicle, and this vehicle comprises above-mentioned power drive system.

According to the power drive system for vehicle of the embodiment of the present invention, comprising: engine unit; Gearbox unit, described gearbox unit is suitable for optionally being connected with described engine unit power coupling; First dynamotor, described first dynamotor is connected with described gearbox unit power coupling; Efferent, described efferent is suitable for exporting the power from described gearbox unit; And synchro, described synchro is arranged to be suitable between described efferent and described gearbox unit selectively synchronous, thus exports described power to drive the wheel of described vehicle by described efferent.

According to the power drive system of the embodiment of the present invention, the power that engine unit and/or the first dynamotor export can be exported from efferent by the synchronous effect of synchro, compact conformation and control convenient.

And, first dynamotor can by regulating the speed of gearbox unit, such as the first dynamotor can the rotating speed of efferent be target, by the change of rotating speed, regulate the speed of gearbox unit, gearbox unit is mated rapidly in time actv. mode with the speed of efferent, thus reduce the synchronous required time, reduce intermediate energy loss, engaging without moment of torsion of synchro can also be realized simultaneously, drastically increase the driving efficiency of vehicle, synchronous controllability and synchronous real-time.In addition, the life-span of synchro is able to further prolongation, thus reduces the cost of car load maintenance.

According to the power drive system for vehicle of the embodiment of the present invention, comprising: engine unit; Double-clutch, described double-clutch has input shaft, the first mouth and the second mouth, and the mouth of described engine unit is connected with the input end of described double-clutch; First input shaft and the second input shaft, described first input shaft is connected with described first mouth and described second input shaft is connected with described second mouth, described second input shaft is set on described first input shaft coaxially, and described first input shaft and described second input shaft are fixedly installed a driving gear respectively; Output shaft, described output shaft is fixedly installed two driven gears, and described two driven gears engage accordingly with the driving gear on described first input shaft and described second input shaft respectively; First dynamotor, described first dynamotor is by driving gear indirect drive described in intermediate gear and one of them; Main reduction gear driving gear, described main reduction gear driving gear can rotate by differential relative to described output shaft; Engage gear ring, described joint gear ring and described main reduction gear driving gear are fixed; Diff, described diff is provided with main reduction gear driven gear, and described main reduction gear driven gear engages with described main reduction gear driving gear, and described diff is located between two front-wheels; Synchro, described synchro to be arranged on described output shaft and to be arranged to optionally engage described joint gear ring; And second dynamotor, described second dynamotor drives two trailing wheels by speed reduction gearing.

According to a further aspect of the invention, provide a kind of vehicle, described vehicle comprises as above for the power drive system of vehicle.

Accompanying drawing explanation

Fig. 1 is the principle sketch of the power drive system according to the 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 according to another embodiment of the present invention;

Fig. 5 is the schematic diagram of the power drive system according to another embodiment of the present invention;

Fig. 6 is the schematic diagram of the power drive system according to another embodiment of the present invention;

Fig. 7 is the schematic diagram of the power drive system according to another embodiment of the present invention;

Fig. 8 is the schematic diagram of the power drive system according to another embodiment of the present invention;

Fig. 9 is the schematic diagram of the power drive system according to another embodiment of the present invention;

Figure 10 is the schematic diagram of the power drive system according to another embodiment of the present invention.

Detailed description of the invention

Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.

In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.

In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, 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 it " on " or D score can comprise the first and second features and directly contact, also can comprise the first and second features and not be directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " comprise fisrt feature immediately below second feature and tiltedly below, or only represent that fisrt feature level height is less than second feature.

Describe in detail according to the power drive system 100 of the embodiment of the present invention below with reference to Fig. 1-Fig. 9, this power drive system 100 is applicable to vehicle, is specially adapted to in engine unit 1 and the dynamotor motor vehicle driven by mixed power that is main power source.

As shown in drawings, engine unit 1, gearbox unit 2a, the first dynamotor 41, efferent 5 and synchro 6 can be comprised according to the power drive system 100 of the embodiment of the present invention.

Gearbox unit 2a is suitable for optionally being connected with engine unit 1 power coupling.The Power output that engine unit 1 can such as optionally be produced by power-transfer clutch etc. is to gearbox unit 2a; Optionally, gearbox unit 2a also such as can will export to engine unit 1, with start the engine unit 1 from the staring torque of the first dynamotor 41.In context of the present disclosure, can carry out such as being referred to as power coupling by self or the transmission of power that produced by miscellaneous part between engine unit 1 with gearbox unit 2a and be connected.

The feature of engine unit 1 is directly machine entered internal-combustion and produce power after liquid or gaseous fuel and air mixing, and then is transformed into mechanical energy.For vehicle, its engine unit 1 generally can adopt four-stroke spark ignition engine or diesel engine, and engine unit 1 generally can comprise body group, piston crank mechanism, feed system, ignition system, cooling system and lubricating system etc.

Body group is the assembling body of each mechanism of engine unit 1, system, and the straight reciprocating motion of piston can be changed into the rotary motion of bent axle and exportable power by piston crank mechanism.Valve mechanism is used for timing air inlet, exhaust, ensures carrying out smoothly of each circulation of engine unit 1.Feed system can will be used for burning in gas mixture supply cylinder.Cooling system is used for cooled engine unit 1, ensures that the operating temperature of engine unit 1 is in suitable temperature range.Lubricating system is used for each kinematic pair in lubricating engine unit 1, reduces wear and waste of power.

Should be understood that, above-mentioned concrete structure, principle of work etc. about engine unit 1 and subsystems thereof, clamp mechanism has been prior art all, and is well known to those of ordinary skill in the art, here for succinct object, is described in detail no longer one by one.

First dynamotor 41 is connected with gearbox unit 2a power coupling.In other words, the first dynamotor 41 coordinates transmission with gearbox unit 2a, and namely the first dynamotor 41 can drive speed transmission unit 2a, and gearbox unit 2a also can drive the first dynamotor 41 conversely.

Such as, at least part of power produced can be exported to the first dynamotor 41 by gearbox unit 2a by engine unit 1, and now the first dynamotor 41 can generate electricity, and mechanical energy can be converted to electrical energy for storage in accumulation of energy parts such as battery component.And for example, the electric energy from battery component can be converted to mechanical energy by the first dynamotor 41, and exports to efferent 5 to drive vehicle by gearbox unit 2a.

First dynamotor 41 is the motors with electrical motor and generator function, in the description of the present invention about " dynamotor ", if do not have specified otherwise, is all understood in this way.

Efferent 5 is configured to the power transmission through gearbox unit 2a speed change to the wheel 200 of vehicle.In brief, efferent 5 is suitable for exporting the power from gearbox unit 2a.Synchro 6 is arranged to be suitable between efferent 5 and gearbox unit 2a selectively synchronous, thus by efferent 5 outputting power to drive the wheel 200 of vehicle.

Here, the effect of synchro 6 can be final synchronism output portion 5 and gearbox unit 2a, namely by after the synchronous effect of synchro 6, make efferent 5 can with gearbox unit 2a synchronization action, thus by efferent 5 as clutch end, by the Power output of gearbox unit 2a.And when synchro 6 non-synchronized gear transmission unit 2a and efferent 5, the power of gearbox unit 2a (by efferent 5) cannot directly export wheel 200 to.

In brief, synchro 6 serves the object of powershift, namely synchro 6 engages, the power of gearbox unit 2a can be exported by efferent 5 and for driving wheel 200, and synchro 6 disconnects, gearbox unit 2a cannot by efferent 5 by transmission of power to wheel 200, like this by the joint of a control synchro 6 or disconnection, thus the conversion of whole drive mode can be realized.

Due to the particularity of application scenario, application of synchronized device 6 advantage that power-transfer clutch has relatively is herein:

A, when synchro 6 disconnects, engine unit 1, gearbox unit 2a and the first motor generator 41 is needed thoroughly to disconnect with the power of wheel 200, the motion (generating, driving, power torque transfer etc.) that both sides are carried out separately is independent of each other, and this demand is particularly important to the energy ezpenditure reducing vehicle.Synchro 6 can well accomplish this point, and power-transfer clutch there will be friction lining is usually separated halfway situation, adds loss due to friction and energy ezpenditure.

B, when synchro 6 engages, the synthesis of engine unit 1 and the first dynamotor 41 (after coupling) propulsive effort is needed to be passed to wheel 200 after the moment of torsion of gearbox unit 2a amplifies, or the propulsive effort of wheel 200 is passed to the first dynamotor 41(generates electricity), this just requires that dynamic coupling device herein can transmit very large moment of torsion, and has very high stability.Synchro 6 can well accomplish this point, and if select power-transfer clutch, then need the power-transfer clutch designing the ultra-large volume do not matched with whole system (driving engine, change-speed box, motor), add layout difficulty, improve weight and cost, and when torsional impact, have the risk of skidding.

And, first dynamotor 41 can by regulating the speed of gearbox unit 2a, such as the first dynamotor 41 can the rotating speed of efferent 5 be target, by the change of rotating speed, regulate the speed of gearbox unit 2a, gearbox unit 2a is mated rapidly in time actv. mode with the speed of efferent 5, thus reduce the synchro 6 synchronous required time, reduce intermediate energy loss, engaging without moment of torsion of synchro 6 can also be realized simultaneously, drastically increase the driving efficiency of vehicle, synchronous controllability and synchronous real-time.In addition, the life-span of synchro 6 is able to further prolongation, thus reduces the cost of car load maintenance.

In addition, according to power drive system 100 compact conformation of the embodiment of the present invention and control convenient.

According to some embodiments of the present invention, as Fig. 2-Fig. 6 and shown in composition graphs 7, gearbox unit 2a comprises transmission power input part 21a and transmission power efferent 22a, transmission power input part 21a optionally engages with engine unit 1, to transmit the power that engine unit 1 produces.Transmission power efferent 22a is configured to be suitable for outputting power to efferent 5 by from the power on transmission power input part 21a by the synchronous of synchro 6.

As Fig. 2-Fig. 6 and shown in composition graphs 7, further, transmission power input part 21a comprises further: input shaft (such as the first input shaft 21, second input shaft 22) and the driving gear 25 be arranged on input shaft, input shaft optionally engages with engine unit 1, to transmit the power that engine unit 1 produces.In other words, when engine unit 1 needs to output power to input shaft, engine unit 1 can engage with input shaft, thus the power that engine unit 1 exports can be passed to input shaft.Engine unit 1 can pass through power-transfer clutch (such as, double-clutch 31) with the juncture of input shaft and realize, and will provide detailed description below, and repeat no more here about this part content.

As Fig. 2-Fig. 6 and shown in composition graphs 7, transmission power efferent 22a comprises: output shaft 24 and driven gear 26, driven gear 26 to be arranged on output shaft 24 and to engage accordingly with the driving gear 25 on input shaft.

With reference to shown in Fig. 2-Fig. 5, output shaft 24 is configured to export power that input shaft transmits at least partially.Specifically, output shaft 24 coordinates transmission with input shaft, such as preferably, can carry out transmission between output shaft 24 and input shaft by above-mentioned driving gear 25 and driven gear 26.

Of course it is to be understood that the type of drive for output shaft 24 and input shaft is not limited to this, such as, can also be by pulley transmission mechanism, rack and pinion drive mechanism etc.To those skilled in the art, the drive mechanism that is suitable for or mode specifically can be selected according to actual conditions.

Output shaft 24 is for transmitting the power at least partially on input shaft, such as when power drive system 100 is in some transmission mode, as the first dynamotor 41 carries out dynamoelectric and power generation, power now on input shaft can partly for the generating of the first dynamotor 41, another part also may be used for driving vehicle to travel, and the whole power on certain input shaft also can all for generating.

According to some embodiments of the present invention, the first dynamotor 41 and a direct-drive in input shaft and output shaft 24 or indirect drive.Here, " direct-drive " refers to the first dynamotor 41 and is directly connected with corresponding axle and carries out transmission, without intermediate transmission parts such as any such as transmission system, arrangement of clutch, drivings device, directly and in input shaft and output shaft 24 one of the mouth of such as the first dynamotor 41 is rigidly connected.Direct drive advantage resides in reduced intermediate transmission parts, reduces the loss of energy in transmission process.

" indirect drive " namely gets rid of other type of drive any outside direct-drive, such as, carry out transmission by centre parts such as transmission system, arrangement of clutch, drivings device.The advantage of indirect drive mode is that layout is convenient, and can obtain required transmitting ratio by arranging such as transmission system.

Efferent 5 can as the Power output terminal of output shaft 24, for exporting the power on output shaft 24, efferent 5 can rotate by differential relative to output shaft 24, namely can there is asynchronous situation of rotating relative to output shaft 24 in efferent 5, that is there is speed discrepancy therebetween, be not rigidly connected.

Synchro 6 is arranged on output shaft 24.Particularly, shown in Fig. 1 and composition graphs 2-Fig. 6, synchro 6 can comprise splined hub 61 and sliding hub 62, splined hub 61 can be fixed on output shaft 24, and splined hub 61 is with output shaft 24 synchronous axial system, and splined hub 61 can along the axial action of output shaft 24 relatively for sliding hub 62, optionally to engage efferent 5, thus making efferent 5 with output shaft 24 synchronous axial system, power can pass to wheel 200 from efferent 5 thus, realizes the object driving wheel 200.But should be understood that, the structure of synchro 6 is not limited thereto.

According to the power drive system 100 of the embodiment of the present invention, the power that engine unit 1 and/or the first dynamotor 41 export can be exported from efferent 5 by the joint of synchro 6, compact conformation, it is convenient to control, and switch in operating mode process at vehicle, may occur that synchro 6 is converted to the situation of engagement state from released state, now the first dynamotor 41 can the rotating speed of efferent 5 be target, controlled by rotating speed, the rotating speed of regulation output axle 24, output shaft 24 is mated at short notice with the rotating speed of efferent 5, facilitate the joint of synchro 6, thus substantially increase driving efficiency, decrease the transmission loss of intermediate energy simultaneously, and can realize synchro 6 engage (when namely synchro 6 engages substantially without radial frictional force or radial frictional force far below mean level in industry) without moment of torsion.

According to preferred embodiments more of the present invention, as shown in Fig. 2-Fig. 9, input shaft is multiple, namely two or more.The plurality of input shaft is coaxial nested setting successively, and such as, input shaft is N number of, then K input shaft is set on K-1 input shaft, wherein N >=K >=2, and the central axis of this N number of input shaft overlaps.

In the example of Fig. 2-Fig. 5, Fig. 7-Fig. 9, input shaft is two, i.e. the first input shaft 21 and the second input shaft 22, then the second input shaft 22 to be set on the first input shaft 21 and the central axes of the two.And for example, in the example of fig. 6, input shaft is three, i.e. the first input shaft 21, second input shaft 22 and the 3rd input shaft 23, then the 3rd input shaft 23 is set on the second input shaft 22, and the second input shaft 22 is set on the first input shaft 21, and the central axes of these three axles.

Engine unit 1 to input shaft transmit power or with input shaft carry out power coupling be connected time, engine unit 1 optionally engages with in multiple input shaft.In other words, when needing the power of engine unit 1 to send out, the mouth of engine unit 1 can engage with in multiple input shaft thus synchronous axial system.And when not needing engine unit 1 to work or engine unit 1 is in idling, then engine unit 1 all can disconnect with multiple input shaft, namely engine unit 1 is not connected with any one input shaft, thus disconnection is connected with the power coupling of engine unit 1.

Further, as Fig. 2 and shown in composition graphs 3-Fig. 6, each input shaft is fixed with a driving gear 25, driving gear 25 is with input shaft synchronous rotary, driving gear 25 has multiple with the fixed form of corresponding input shaft, such as can be fixed by keyway fit system, driving gear 25 and input shaft can certainly be fixed by hot pressing, the various ways such as one-body molded, both guarantees can synchronous rotary.Output shaft 24 is fixed with multiple driven gear 26, multiple driven gear 26 is with output shaft 24 synchronous rotary, and driven gear 26 and the fixed form of output shaft 24 also can adopt the fixed form of above-mentioned driving gear 25 and input shaft, but are not limited thereto.

But, the present invention is not limited thereto, as, on the driving gear 25 that each input shaft is arranged quantity can be not limited to one, accordingly, output shaft 24 arranges multiple driven gear 26 and has formed multiple gear, can realize to those skilled in the art.

As shown in Fig. 2-Fig. 6, multiple driven gear 26 engages respectively accordingly with the driving gear 25 on multiple input shaft, according to one embodiment of present invention, the quantity of driven gear 26 and the quantity of input shaft can be identical, such as driven gear 26 is two, then input shaft is two, such two driven gears 26 can distinguish accordingly with driving gear 25 engaged transmission on two input shafts, make these two pairs of gear pairs can form two gears and carry out transmission.

According to one embodiment of present invention, can need according to transmission and three or more input shafts are set, and on each input shaft, all can fix a driving gear 25, the quantity of input shaft is more thus, the gear that can carry out transmission is more, the scope of the transmitting ratio of this power drive system 100 is larger, thus adapts to the requirement of various for transmission.

According to specific embodiments more of the present invention, as Figure 2-Figure 5, multiple input shaft comprises the first input shaft 21 and the second input shaft 22, second input shaft 22 is set on the first input shaft 21, second input shaft 22 is hollow shafts, first input shaft 21 is preferably solid axle, and certainly alternatively, the first input shaft 21 also can be hollow shaft.

First input shaft 21 can adopt bearing to support, and in order to ensure ride comfort during the first input shaft 21 transmission, bearing is preferably multiple and can arranges along the position that the axis of the first input shaft 21 is not affecting remaining part assembling.Similarly, the second input shaft 22 also can adopt bearing to support, and is not described in detail here.

Further, with reference to shown in Fig. 2-Fig. 5, engine unit 1 and be provided with double-clutch 31 between the first input shaft 21 and the second input shaft 22, double-clutch 31 can adopt existing dry dual clutch 31 or wet-type dual-clutch 31.

Double-clutch 31 has input end 313, first mouth 311 and the second mouth 312, engine unit 1 is connected with the input end 313 of double-clutch 31, specifically, engine unit 1 can pass through the various ways such as flywheel, bumper or reverse plate and is connected with the input end 313 of double-clutch 31.

First mouth 311 of double-clutch 31 is connected with the first input shaft 21, thus this first mouth 311 and first input shaft 21 synchronous rotary.Second mouth 312 of double-clutch 31 is connected with the second input shaft 22, thus this second mouth 312 and second input shaft 22 synchronous rotary.

Wherein, the input end 313 of double-clutch 31 can be the housing of double-clutch 31, and its first mouth 311 and the second mouth 312 can be two clutch plates.Usually, housing and two clutch plates can all disconnect, namely input end 313 and the first mouth 311 and the second mouth 312 all disconnect, when needs engage one of them clutch plate, housing can be controlled carry out engaging thus synchronous rotary with corresponding clutch plate, namely input end 313 engages with one of the first mouth 311 and second mouth 312, thus the power that input end 313 transmits can by an output in the first mouth 311 and the second mouth 312.Usually, housing can not engage with two clutch plates simultaneously.

Be to be understood that, the concrete engagement state of double-clutch 31 is controlled the impact of strategy, for a person skilled in the art, can transmission mode needed for reality and adaptive settings control policy, thus can switch with the Three models that two mouths all disconnect and input end engages with one of two mouths at input end.

In the example of Fig. 2-Fig. 5, due to the cross-compound arrangement that input shaft is concentric, and each input shaft is only provided with a driving gear 25, therefore this gearbox unit 2a has two different gears, engine unit 1 can output power to efferent 5 by these two gears, synchro 6 can be in engagement state always, namely engages output shaft 24 and efferent 5.

When switching between gear, synchro 6 is without the need to engaging other gear as will first disconnect moving axially with the synchronizer structure of traditional arrangement mode again, and only need control the engaging/disengaging state of double-clutch 31 simply, now synchro 6 can be in engagement state always, like this when engine unit 1 outputs power to efferent 5, only need control a gearshift power element and double-clutch 31, and without the need to control synchro 6, greatly can simplify control policy like this, reduce the engaging/disengaging number of times of synchro 6, improve the life-span of synchro 6.

According to some embodiments of the present invention, the first dynamotor 41 is arranged to coordinate transmission with in driving gear 25 and driven gear 26, and in other words, the first dynamotor 41 is and an indirect drive in input shaft and output shaft 24.

Further, alternatively, between first dynamotor 41 and respective gears, can intermediate transmission mechanism be set, this transmission device can be Worm and worm-wheel gearing, one or more levels gear pair transmission device, chain wheel driving mechanism etc., or when non-contravention, can also be the combination of above-mentioned multiple transmission device, such first dynamotor 41 can be arranged in diverse location as required, reduces the layout difficulty of the first dynamotor 41.

Consider the problem of being convenient to spatially arrange, according to one embodiment of present invention, the first dynamotor 41 can carry out transmission by an intermediate gear 411.Such as, in the example of Fig. 3 (composition graphs 2), by intermediate gear 411 indirect drive between the driving gear 25 on the first dynamotor 41 and the first input shaft 21.And for example, in the figure 2 example, by intermediate gear 411 indirect drive between the driving gear 25 on the first dynamotor 41 and the second input shaft 22.

But the present invention is not limited to this.In other embodiments of the invention, the first dynamotor 41 is arranged to be connected with in output shaft 24 with the first input shaft 21.Such as, in the example of fig. 4, the first dynamotor 41 is directly connected with the first input shaft 21.And for example, in the example of hgure 5, the first dynamotor 41 is directly connected with output shaft 24.First dynamotor 41 adopts the mode be directly connected with corresponding axle, and the structure of power drive system 100 can be made compacter, can also reduce the circumferential size of power drive system 100 simultaneously, be convenient to be arranged in the cabin of vehicle.

According to one embodiment of present invention, with reference to shown in Fig. 4, the first dynamotor 41 is coaxially arranged with the first input shaft 21, and the first dynamotor 41 and engine unit 1 coaxially arranged.Here, " the first dynamotor 41 is coaxially arranged with engine unit 1 " should be understood to: the pivot center of the rotor of the first dynamotor 41 overlaps substantially with the rotation axis of the bent axle of engine unit 1.Thus, make the structure of power drive system 100 compacter.

According to some embodiments of the present invention, shown in Fig. 2-Fig. 6, efferent 5 can comprise output gear 51 and engage gear ring 52, and output gear 51 and output shaft 24 can relatively rotate i.e. differential and rotate, engage gear ring 52 to fix with output gear 51, namely engage gear ring 52 and output gear 51 synchronous axial system.

Thus, when synchro 6 needs efferent 5 to engage with output shaft 24, the sliding hub 62 of synchro 6 can axially to the direction motion engaging gear ring 52, after efferent 5 with the synchronization of output shaft 24, sliding hub 62 can engage with engaging gear ring 52, thus output shaft 24, formed between synchro 6 and efferent 5 three and be rigidly connected, and then three's synchronous rotary.

In order to reduce intermediate transmission parts, reduce degradation of energy, and improve the driving efficiency of power drive system 100 as much as possible, as preferred mode, as shown in Fig. 2-Fig. 6, output gear 51 can be main reduction gear driving gear, and this main reduction gear driving gear can directly engage with main reduction gear driven gear 53 thus output power, to drive wheel 200.But the present invention is not limited to this, other centre part for transmission also can be set between output gear 51 and main reduction gear.

In some embodiments of the invention, as shown in Fig. 2-Fig. 6, power drive system 100 also comprises the second dynamotor 42, the mouth of the second dynamotor 42 is arranged to carry out coordinating transmission with efferent 5, and the mouth of the second dynamotor 42 can be the motor shaft of the second dynamotor 42.

According to some embodiments of the present invention, during being converted at synchro 6 engagement state engaged with efferent 5 from the off-state be separated with efferent 5, the first dynamotor 41 may be used for the rotating speed of regulation output axle 24.According to other embodiments of the present invention, at synchro 6 from during being converted to the off-state that efferent 5 disconnects the engagement state engaged with efferent 5, the first dynamotor 41 may be used for the rotating speed that the rotating speed of regulation output axle 24 and/or the second dynamotor 42 may be used for regulation output portion 5.

Specifically, second dynamotor 42 can the rotating speed in regulation output portion 5, such as when occurring that synchro 6 is converted to engagement state from released state, now the second dynamotor 42 can the rotating speed in regulation output portion 5 as required, output shaft 24 is mated at short notice with the rotating speed of efferent 5, thus facilitates the joint of synchro 6.And, second dynamotor 42 can coordinate the first dynamotor 41 to carry out speed governing simultaneously, the rotating speed of output shaft 24 and efferent 5 is carried out synchronously within the shorter time, thus meet engaging condition within the fastest time, synchro 6 is engaged, substantially increases driving efficiency.

In brief, alternatively, the first dynamotor 41 can carry out independent speed governing.Or alternatively, the second dynamotor 42 can carry out independent speed governing.Moreover further alternatively, the first dynamotor 41 and the second dynamotor 42 can carry out speed governing simultaneously.

Like this, the engaging/disengaging of synchro 6 controls the output of gearbox unit 2a power, first dynamotor 41 and the second dynamotor 42 can carry out speed governing compensation to output shaft 24 and efferent 5 respectively during synchro 6 is converted to engagement state from off-state simultaneously, make the rotating speed Rapid matching of output shaft 24 and efferent 5, thus realize engaging without moment of torsion of synchro 6 fast.

Second dynamotor 42 can have multiple with the connection mode of efferent 5, and concrete arrangement form can consider the many factors such as space, cost, motor speed.Such as, as shown in Fig. 2-Fig. 6, the mouth of the second dynamotor 42 can directly be connected with efferent 5, and the second dynamotor 42 is coaxially arranged with output shaft 24.Like this, make the structure of power drive system 100 compacter.But, the present invention is not limited thereto, between the second dynamotor 42 and efferent 5, also can carry out indirect drive by gear drive, Worm and worm-wheel gearing, chain wheel driving mechanism.

According to some embodiments of the present invention, power drive system 100 can also comprise battery component (scheming not shown), and battery component is preferably connected with the second dynamotor 42 with the first dynamotor 41.Thus, the first dynamotor 41 drives the electric energy carrying out generating electricity or braking recovery can be used for and be stored in battery component by engine unit 1, and the electric energy that the second dynamotor 42 reclaims when damped condition also can be used for and is stored in battery component.When vehicle is in electric model, electric energy can be supplied to respectively the first dynamotor 41 and the second dynamotor 42 or supply the second dynamotor 42 separately by battery component.

But the present invention is not limited thereto, in other embodiments of the invention, this battery component also can be connected with one of the first dynamotor 41 or second dynamotor 42.

According to one embodiment of present invention, as shown in Figure 10, efferent 5 is arranged for driving pair of wheels, and the second dynamotor 42 is arranged for driving second pair of wheel, pair of wheels is front-wheel or trailing wheel, and the second pair of wheel is the another one in front-wheel and trailing wheel.Particularly, with reference to shown in Figure 10, efferent 5 is for driving front-wheel, and the second dynamotor 42 is for driving trailing wheel 220.

Efferent 5 can by transmission of power to diff 54, and power distribution can be given two front-wheels by semiaxis by diff 54.Second dynamotor 42 is one and second pair of wheel can be driven as trailing wheel 220 by speed-changing mechanism 73.This speed-changing mechanism 73 can be speed reduction gearing, and speed reduction gearing can be gear type speed reduction gearing, Worm-gear type speed reduction gearing.

As a kind of variant embodiment of the power drive system 100 described in above-described embodiment, as shown in Figure 6, multiple input shaft comprises three axles, i.e. the first input shaft 21, second input shaft 22 and the 3rd input shaft 23, second input shaft 22 is set on the first input shaft 21, and the 3rd input shaft 23 is set on the second input shaft 22.

In this variant embodiment, power drive system 100 comprises three power-transfer clutchs 32 further, three power-transfer clutchs 32 have input end 324, first mouth 321, second mouth 322 and the 3rd mouth 323, engine unit 1 is connected with the input end 324 of three power-transfer clutchs 32, and the first mouth 321 of three power-transfer clutchs 32 is connected with the first input shaft 21, the second mouth 322 of three power-transfer clutchs 32 is connected with the second input shaft 22 and the 3rd mouth 323 of the 3rd power-transfer clutch 32 is connected with the 3rd input shaft 23.

Similarly, the input end of three power-transfer clutchs 32 can be its housing, and its three mouths can be three clutch plates, and input end can engage with one of three mouths, or input end and three mouths all disconnect.Be understandable that, principle of work and the double-clutch 31 of three power-transfer clutchs 32 are similar to, and repeat no more here.

It should be noted that, in this variant embodiment, for remainder, the such as type of drive of the first dynamotor 41 and the first input shaft 21 or output shaft 24, the structure etc. of the connection mode of the second dynamotor 42 and efferent 5 and setting position, efferent 5 all can adopt set-up mode same in above-mentioned double-clutch 31 technical scheme, please with reference to the technical scheme of above-mentioned double-clutch 31, describe in detail no longer one by one here.

As the another kind of variant embodiment of the power drive system 100 described in above-described embodiment, as shown in figs. 7 to 9, in this power drive system 100, driven gear 26 is connection gear structure, this connection gear structure 26 empty set is arranged on output shaft 24, and namely the two can rotate by differential.Wherein, synchro 6 to be arranged on output shaft 24 and selectively to engage with this connection gear structure 26.

In this embodiment, particularly, input shaft is two, i.e. the first input shaft 21 and the second input shaft 22, each input shaft is fixed with a driving gear 25, connection gear structure 26 is dual gear, and this dual gear 26 has the first gear part 261 and the second gear part 262, first gear part 261 and the second gear part 262 and engages accordingly with two driving gears 25 respectively.

Power drive system 100 in this embodiment is when carrying out power transmission, synchro 6 can engage dual gear 26, thus the power that engine unit 1 and/or the first dynamotor 41 export can by efferent 5(such as, main reduction gear driving gear 51) export.

In this embodiment, the first dynamotor 41 and in output shaft or output shaft can direct-drive or indirect drive, specifically can adopt the associated actuator mode described in above-described embodiment, no longer describe in detail here.Such as, and for other parts, the power-transfer clutch (such as, double-clutch 31 or three power-transfer clutchs 32) etc. between engine unit 1 and input shaft all can adopt set-up mode same with the above-mentioned embodiment, repeat no more here.

Adopt connection gear structure 26, the structure of power drive system 100 can be made compacter, be convenient to arrange.Decrease the number of driven gear, and then reduce the axial dimension of power drive system, be beneficial to the reduction of cost, also reduce layout difficulty simultaneously.

And synchro 6 can by its motion of an independent fork controls, and make rate-determining steps simple, reliability of service is higher.

The structure of each specific embodiment medium power driving system 100 is simply described referring to Fig. 2-Fig. 9.

Embodiment one:

As shown in Figure 2, engine unit 1 is connected with the input end 313 of double-clutch 31, first mouth 311 of double-clutch 31 is connected with the first input shaft 21, and the second mouth 312 of double-clutch 31 is connected with the second input shaft 22, and the second input shaft 22 is set on the first input shaft 21 coaxially.

First input shaft 21 and the second input shaft 22 are fixedly installed respectively a driving gear 25, first dynamotor 41 by an intermediate gear 411 with driving gear 25 indirect drive on the second input shaft 22.Output shaft 24 is fixedly installed two driven gears 26, these two driven gears 26 are corresponding with the driving gear 25 on the first input shaft 21 and the second input shaft 22 respectively to be engaged, thus forms two transmission gears.

Synchro 6 is arranged on output shaft 24, and main reduction gear driving gear (that is, output gear 51) can rotate by differential relative to output shaft 24, and the left side of main reduction gear driving gear can be fixed with the joint gear ring 52 with synchro 6 adaptation by pipe link.The effect of synchro 6 controls powershift, namely by the engaging/disengaging of control synchro 6, thus can optionally be exported by efferent 5 by the power of engine unit 1 and/or the first dynamotor 41.

The mouth of the second dynamotor 42 is directly connected with main reduction gear driving gear.Wherein, main reduction gear driving gear and main reduction gear driven gear 53 external toothing, main reduction gear driven gear 53 can be fixed on the housing of diff 54, with by transmission of power to diff 54, after diff 54 distributes power, adaptability passes to the half-bridge of both sides, thus drives wheel 200.

Power drive system 100 in this embodiment, double-clutch 31 can, by cutting off or engaging, make the power of engine unit 1 be delivered on output shaft 24 with size two kinds of speed ratios respectively.First dynamotor 41 by shift gear group, can a fixed speed ratio by transmission of power on output shaft 24.Synchro 6 engages, and the power of output shaft 24 can be passed to wheel 200 by main reduction gear and diff 54, and synchro 6 cuts off, then the power of output shaft 24 can not be passed to wheel 200.Second dynamotor 42 can by efferent 5 directly by transmission of power to wheel 200.

Power drive system 100 in this embodiment can have following operating mode: the pure electronic operating mode of the second dynamotor 42, the pure electronic operating mode of double-motor, operating mode in parallel, series connection operating mode, series-parallel connection operating mode and braking/deceleration feedback operating mode.

Operating mode one:

The pure electronic operating mode of second dynamotor 42: double-clutch 31 cuts off, and synchro 6 cuts off, engine unit 1 and the first dynamotor 41 do not work, and the second dynamotor 42 drives wheel 200 by main reduction gear driving gear.This operating mode is mainly used at the uniform velocity or the Smaller load situation such as city operating mode, and battery has higher electricity simultaneously.The advantage of this operating mode is the second dynamotor 42 Direct driver, and messenger chain parts that are the shortest, that participate in work are minimum, can reach the highest driving efficiency and minimum noise.

Operating mode two:

The pure electronic operating mode of double-motor: double-clutch 31 cuts off, synchro 6 engages, engine unit 1 does not work, the shift gear group that the driven gear 26 that first dynamotor 41 is engaged by driving gear 25 and correspondence is formed and synchro 6 are by transmission of power to main reduction gear driving gear, and the second dynamotor 42 directly drives wheel 200 by main reduction gear driving gear.The larger load occasions such as this operating mode is mainly used in accelerating, climb, overtake other vehicles, high speed, and the situation that battery electric quantity is higher.This operating mode drives compared to single motor and has better tractive performance, and have better economy and lower noise compared to hybrid power, the typical applications more giving prominence to its advantage is the road conditions of blocking up on heavy grade (winding road).

Operating mode three:

Operating mode in parallel: double-clutch 31 engages, synchro 6 engages, the shift gear group of driven gear 26 formation that engine unit 1 and the first dynamotor 41 are engaged by driving gear 25 and correspondence and synchro 6 are by transmission of power to main reduction gear driving gear, and the second dynamotor 42 directly drives wheel 200 by main reduction gear driving gear.This operating mode is mainly used in anxious acceleration, climbs the peak load occasions such as large slope.The advantage of this operating mode is that three engines (engine unit 1, first dynamotor 41 and the second dynamotor 42) drive simultaneously, can play maximum tractive performance.

Operating mode four:

Series connection operating mode: double-clutch 31 engages, synchro 6 cuts off, engine unit 1 drives the first dynamotor 41 to generate electricity by the shift gear group of power-transfer clutch and driving gear 25 and corresponding intermediate gear 411 formation engaged thereof, and the second dynamotor 42 drives wheel 200 by main reduction gear driving gear.This operating mode is mainly used in moderate duty, and the situation that battery electric quantity is less.The advantage of this operating mode is the second dynamotor 42 Direct driver, messenger chain parts that are the shortest, that participate in work are minimum, the highest driving efficiency and minimum noise can be reached, first dynamotor 41 can by moment of torsion and speed adjustment simultaneously, make engine unit 1 remain on optimal economic area operation, reduce generating oil consumption.

Operating mode five:

Braking/deceleration feedback operating mode: double-clutch 31 cuts off, synchro 6 engages, engine unit 1 does not work, first dynamotor 41 is braked the power of main reduction gear driving gear by shift gear group and synchro 6 and is generated electricity, and the direct power by main reduction gear driving gear brake wheel 200 of the second dynamotor 42 also generates electricity.This operating mode is mainly used in car brakeing or deceleration.The advantage of this operating mode be car retardation or braking time, two motors are braked simultaneously, braking energy can be absorbed to greatest extent, be converted into electric energy, simultaneously by cutting off double-clutch 31, eliminating the braking of engine friction moment to vehicle, more power can be left and absorb by motor.

Operating mode six:

Series-parallel connection operating mode: double-clutch 31 engages, synchro 6 engages, the partial power of engine unit 1 drives the first dynamotor 41 to generate electricity by double-clutch 31 and shift gear group, transmission of power is directly driven wheel 200 by main reduction gear driving gear 51 to main reduction gear driving gear 51, second dynamotor 42 by shift gear group and synchro 6 by another part power of engine unit 1.This operating mode be mainly used in the larger load occasions such as acceleration, climbing and electricity is few when.The advantage of this operating mode is whole power that can play engine unit 1, has both ensured the dynamic property of vehicle, can generate electricity again simultaneously, keeps the electricity of battery.

Six kinds of above-mentioned operating modes can switch, and wherein more typical operating mode switches to: switch to operating mode three by operating mode four, or switches to operating mode five from operating mode four.

Particularly, when switching to operating mode three by operating mode four: accelerate to overtake other vehicles when needs are anxious, avoiding barrier or other situation time, according to the throttle demand of driver, power drive system 100 can switch to operating mode three from operating mode four.Now the first dynamotor 41 with the rotating speed of main reduction gear driving gear for target, can be controlled by rotating speed, the rotating speed of regulation output axle 24, the rotating speed of output shaft 24 and main reduction gear driving gear is mated as much as possible, facilitate synchro 6 to combine.

And in the matching process, the second dynamotor 42 can respond driving demand, increase moment of torsion, vehicle is accelerated, and need not as common vehicle, synchro 6 could accelerate after engaging by the time.The function of this moment of torsion compensated in advance, can shorten the torque responsive time widely, improves the instantaneous acceleration capability of vehicle.

For another example, switch to operating mode five from operating mode four: when car brakeing or slow down time, according to the throttle demand of driver or the action of trampling brake pedal, power drive system 100 can switch to operating mode five from operating mode four.Now the first dynamotor 41 can the rotating speed of main reduction gear driving gear be target, is controlled, the rotating speed of regulation output axle 24, the rotating speed of the two is mated as much as possible, facilitate synchro 6 to combine by rotating speed.And in the matching process, the second dynamotor 42 can respond driving demand, wheel 200 is braked, feedback electricity, and need not as common vehicle, synchro 6 could feedback electricity after engaging by the time.This moment of torsion compensated in advance function, can shorten motor braking response time greatly, increases the electricity of feedback.

Especially, for complex road condition, such as when vehicle at upward slope, descending, jolt, travel under the low complex road condition such as attached time, often cause synchro 6 boding difficulties because of speed wobble.Even if the first dynamotor 41 can be controlled by rotating speed, the rotating speed of regulation output axle 24, but due to the rotating speed of main reduction gear driving gear uncontrollable with the speed of a motor vehicle, bring difficulty also can to the accuracy of speed governing of the first dynamotor 41 and speed.Under these road conditions, carry out torque compensation by the second dynamotor 42 pairs of vehicles, can stabilizing speed effectively, both improve the driving experience of car load, and also make the joint of synchro 6 become simple.

Embodiment two:

As shown in Figure 3, the power drive system 100 in this embodiment and the difference of the power drive system 100 in Fig. 2 only can be the position of the first dynamotor 41.In this embodiment, the first dynamotor 41 is by driving gear 25 indirect drive on an intermediate gear 411 and the first input shaft 21, then can be basically identical with the power drive system 100 in Fig. 2 embodiment for remainder, repeats no more here.

Embodiment three:

As shown in Figure 4, the power drive system 100 in this embodiment and the difference of the power drive system 100 in Fig. 2 only can be the position of the first dynamotor 41.In this embodiment, first dynamotor 41 is directly connected with the first input shaft 21, first dynamotor 41 is when generating electricity, and its mechanical energy can be generated electricity by directly exporting to the first dynamotor 41 after double-clutch 31, first input shaft 21 by engine unit 1.When the first dynamotor 41 is as electrical motor outputting power, its power produced directly can export to the first input shaft 21, then passes to output shaft 24 by the first input shaft 21 by shift gear group.Then can be basically identical with the power drive system 100 in Fig. 2 embodiment for remainder, repeat no more here.

Embodiment four:

As shown in Figure 5, the power drive system 100 in this embodiment and the difference of the power drive system 100 in Fig. 2 only can be the position of the first dynamotor 41.In this embodiment, first dynamotor 41 is directly connected with output shaft 24, first dynamotor 41 is when generating electricity, and its mechanical energy can be generated electricity by exporting to the first dynamotor 41 after double-clutch 31, shift gear group, output shaft 24 by engine unit 1.When the first dynamotor 41 is as electrical motor outputting power, its power produced can directly export to output shaft 24.Then can be basically identical with the power drive system 100 in Fig. 2 embodiment for remainder, repeat no more here.

Embodiment five:

As shown in Figure 6, power drive system 100 in this embodiment only can be the form of power-transfer clutch and the number of input shaft, driving gear 25 and driven gear 26 with the difference of the power drive system 100 in Fig. 2, in this embodiment, power-transfer clutch is three power-transfer clutchs 32, input shaft is three, it is three right that driving gear 25 and driven gear 26 correspond to, then can be basically identical with the power drive system 100 in Fig. 2 embodiment for remainder, repeat no more here.

Embodiment six:

As shown in Figure 7, engine unit 1 is connected with the input end 313 of double-clutch 31, first mouth 311 of double-clutch 31 is connected with the first input shaft 21, and the second mouth 312 of double-clutch 31 is connected with the second input shaft 22, and the second input shaft 22 is set on the first input shaft 21 coaxially.

First input shaft 21 and the second input shaft 22 are fixedly installed a driving gear 25 respectively, namely output shaft 24 is set with dual gear 26(, driven gear), first gear part 261 of dual gear 26 engages with the driving gear 25 on the first output shaft 21, and the second gear part 262 of dual gear 26 engages with the driving gear 25 on the second output shaft 22.

Tween drive shaft 43 is fixedly installed the first countershaft-gear 431 and the second countershaft-gear 432, first countershaft-gear 431 engages with the driving gear 25 on the second input shaft 22, and the mouth of the first dynamotor 41 is by an intermediate idler 44 and the second countershaft-gear 432 indirect drive.

Synchro 6 to be arranged on output shaft 24 and for engaging dual gear 26.Main reduction gear driving gear 51 is fixed on output shaft 24.Main reduction gear driving gear 51 and main reduction gear driven gear 53 external toothing, main reduction gear driven gear 53 can be fixed on the housing of diff 54, with by transmission of power to diff 54, after diff 54 distributes power, adaptability passes to the half-bridge of both sides, thus drive wheel 200.

Embodiment seven:

As shown in Figure 8, engine unit 1 is connected with the input end 313 of double-clutch 31, first mouth 311 of double-clutch 31 is connected with the first input shaft 21, and the second mouth 312 of double-clutch 31 is connected with the second input shaft 22, and the second input shaft 22 is set on the first input shaft 21 coaxially.

Tween drive shaft 43 is fixedly installed the first countershaft-gear 431 and the second countershaft-gear 432, first countershaft-gear 431 engages with the driving gear 25 on the second input shaft 22, the mouth of the first dynamotor 41 directly with the second countershaft-gear 432 engaged transmission.

Embodiment eight:

As shown in Figure 9, engine unit 1 is connected with the input end 313 of double-clutch 31, first mouth 311 of double-clutch 31 is connected with the first input shaft 21, and the second mouth 312 of double-clutch 31 is connected with the second input shaft 22, and the second input shaft 22 is set on the first input shaft 21 coaxially.

First input shaft 21 and the second input shaft 22 are fixedly installed a driving gear 25 respectively, namely output shaft 24 is set with dual gear 26(, driven gear), first gear part 261 of dual gear 26 engages with the driving gear 25 on the first output shaft 21, and the second gear part 262 of dual gear 26 engages with the driving gear 25 on the second output shaft 22.The mouth of the first dynamotor 41 directly with the first gear part 261 engaged transmission.

Embodiment nine:

As shown in Figure 10, engine unit 1 is connected with the input end 313 of double-clutch 31, first mouth 311 of double-clutch 31 is connected with the first input shaft 21, and the second mouth 312 of double-clutch 31 is connected with the second input shaft 22, and the second input shaft 22 is set on the first input shaft 21 coaxially.

Synchro 6 is arranged on output shaft 24, and main reduction gear driving gear (that is, output gear 51) can rotate by differential relative to output shaft 24, and the left side of main reduction gear driving gear can be fixed with the joint gear ring 52 with synchro 6 adaptation by pipe link.Wherein, main reduction gear driving gear and main reduction gear driven gear 53 external toothing, main reduction gear driven gear 53 can be located on diff 54, with by transmission of power to diff 54, diff 54 can drive two front-wheels by the semiaxis of both sides.Second dynamotor 42 is one and drives two trailing wheels 220 by a speed reduction gearing 73.

Power drive system 100 in this embodiment can have following operating mode: the pure electronic operating mode of the second dynamotor 42, pure electric four-wheel drive operating mode, operating mode in parallel, series connection operating mode, series-parallel connection operating mode and braking/deceleration feedback operating mode.

Operating mode one, the pure electronic operating mode of the second dynamotor 42: double-clutch 31 and synchro 6 all cut off.This operating mode is mainly used at the uniform velocity or the Smaller load occasion such as city operating mode, and the situation that battery electric quantity is higher.The advantage of this operating mode is that the second dynamotor 42 is by speed-changing mechanism 73 Direct driver trailing wheel 220, compares forerunner and has better acceleration capability, grade climbing performance and limit steering capability.And predecessor portions is disconnected by synchro 6, make predecessor portions there is no mechanical wear, reduce the energy consumption of car load.Wherein, rear-guard part can also set up diff, and diff 54 can become one with speed-changing mechanism 73, but is not limited thereto.

Operating mode two, pure electric four-wheel drive operating mode: double-clutch 31 cuts off, synchro 6 engages, and engine unit 1 does not work, and the first dynamotor 41 drives front-wheel, and the second dynamotor 42 drives trailing wheel.The larger load occasions such as this operating mode is mainly used in accelerating, climb, overtake other vehicles, high speed, and the situation that battery electric quantity is higher.This operating mode drives compared to single motor and has better tractive performance, drives have better economy and lower noise compared to hybrid power.The typical applications giving prominence to its advantage is the road conditions of blocking up on heavy grade (winding road).Compared to forerunner or after drive, pure electric four-wheel drive has better acceleration capability, grade climbing performance, handling and cross country power.

Operating mode three, operating mode in parallel: double-clutch 31 engages, synchro 6 engages, and engine unit 1 and the first dynamotor 41 drive front-wheel jointly, and the second dynamotor 42 drives trailing wheel 220.This operating mode is mainly used in anxious acceleration, climbs the peak load occasions such as large slope.This operating mode major advantage is that double-motor and engine unit drive simultaneously, can play maximum tractive performance.Compared to forerunner and after drive, hybrid power 4 wheel driven has better acceleration capability, grade climbing performance, handling and cross country power.

Operating mode four, series connection operating mode: double-clutch 31 engages, and synchro 6 cuts off, and engine unit 1 drives the first dynamotor 41 to generate electricity, and the second dynamotor 42 drives trailing wheel 220.This operating mode is mainly used in moderate duty, and the situation that battery electric quantity is less.The advantage of this operating mode is that the second dynamotor 42 drives trailing wheel 220, has better acceleration capability, grade climbing performance and limit steering capability compared to front drive vehicle.First dynamotor 41 can, by moment of torsion and speed adjustment, make engine unit 1 remain on optimal economic area operation, reduces generating oil consumption.

Operating mode five, braking/deceleration feedback: double-clutch 31 cuts off, synchro 6 engages, and engine unit 1 does not work, and abrupt deceleration vehicle while of the first dynamotor 41 and the second dynamotor 42 also generates electricity.When the advantage of this operating mode is car retardation or braking, two motors is braked simultaneously, braking energy can be absorbed to greatest extent, be converted into electric energy.And by cutting off double-clutch 31, eliminating the braking of engine unit friction moment to vehicle, more power can be left and absorb by motor.Before and after drive feedback braking together, can under the prerequisite ensureing car load braking force, better assignment system power to front and back motor, than independent forerunner or the more electric energy of rear-guard vehicle energy feedback.

Operating mode six: series-parallel connection operating mode: double-clutch 31 engages, synchro 6 engages, the partial power of engine unit 1 drives the first dynamotor 41 to generate electricity by double-clutch 31 and shift gear group, another part power of engine unit 1 by shift gear group and synchro 6 by transmission of power to main reduction gear driving gear 51, second dynamotor 42 Direct driver trailing wheel.This operating mode be mainly used in the larger load occasions such as acceleration, climbing and electricity is few when.The advantage of this operating mode is whole power that can play engine unit 1, has both ensured the dynamic property of vehicle, can generate electricity again simultaneously, keeps the electricity of battery.

For another example, switch to operating mode five from operating mode four: when car brakeing or slow down time, according to the throttle demand of driver or the action of trampling brake pedal, power drive system 100 can switch to operating mode five from operating mode four.Now the first dynamotor 41 can the rotating speed of main reduction gear driving gear be target, is controlled, the rotating speed of regulation output axle 24, the rotating speed of the two is mated as much as possible, facilitate synchro 6 to combine by rotating speed.And in the matching process, the second dynamotor 42 can respond driving demand, trailing wheel 220 is braked, feedback electricity, and need not as common vehicle, synchro 6 could feedback electricity after engaging by the time.This moment of torsion compensated in advance function, can shorten motor braking response time greatly, increases the electricity of feedback.

In addition, the vehicle comprising power drive system 100 as above is further provided according to embodiments of the invention.Should be understood that, all be well known for ordinary skill in the art for prior art as driving system, steering swivel system, brake system etc. according to other configuration example of the vehicle of the embodiment of the present invention, therefore the detailed description of conventional construction omitted herein.

In the description of this specification sheets, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.In addition, the different embodiment described in this specification sheets or example can carry out engaging and combining by those skilled in the art.

Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.

Claims

1. for a power drive system for vehicle, it is characterized in that, comprising:

Engine unit;

Gearbox unit, described gearbox unit is suitable for optionally being connected with described engine unit power coupling;

First dynamotor, described first dynamotor is connected with described gearbox unit power coupling;

Efferent, described efferent is suitable for exporting the power from described gearbox unit; And

Synchro, described synchro is arranged to be suitable between described efferent and described gearbox unit selectively synchronous, thus exports described power to drive the wheel of described vehicle by described efferent.

2. power drive system according to claim 1, is characterized in that, described gearbox unit comprises:

Transmission power input part, described transmission power input part optionally engages with described engine unit, to transmit the described power that described engine unit produces; And

Transmission power efferent, described transmission power efferent be configured to be suitable for by from the power on described transmission power input part by the synchronous of described synchro by described Power output to described efferent.

3. power drive system according to claim 2, is characterized in that, described transmission power input part comprises further: input shaft, and described input shaft optionally engages with described engine unit; Driving gear, described driving gear is arranged on described input shaft; And

Described transmission power efferent comprises further: output shaft; Driven gear, described driven gear to be arranged on described output shaft and to engage accordingly with the described driving gear on described input shaft.

4. power drive system according to claim 3, it is characterized in that, described synchro is arranged on described output shaft, for selectively synchronous between described efferent and described output shaft, rotates with the described wheel driving described vehicle with described output shaft synchronous to make described efferent.

5. the power drive system for vehicle according to claim 4, it is characterized in that, described input shaft is multiple and coaxial nested setting successively, when described engine unit transmits power to described input shaft, described engine unit optionally engages with in described multiple input shaft.

6. the power drive system for vehicle according to claim 5, it is characterized in that, each described input shaft is fixed with a driving gear, described output shaft is fixed with multiple driven gear, and described multiple driven gear engages respectively accordingly with the driving gear on described multiple input shaft.

7. the power drive system for vehicle according to claim 6, is characterized in that, described multiple input shaft comprises the first input shaft and the second input shaft, and described second input shaft is set on described first input shaft.

8. the power drive system for vehicle according to claim 7, is characterized in that, also comprise:

Double-clutch, described double-clutch has input end, the first mouth and the second mouth, described engine unit is connected with the input end of described double-clutch, and the first mouth of described double-clutch is connected with described first input shaft and the second mouth of described double-clutch is connected with described second input shaft.

9. power drive system according to claim 7, is characterized in that, a direct-drive in described first dynamotor and described input shaft and described output shaft or indirect drive.

10. the power drive system for vehicle according to claim 9, is characterized in that, described first dynamotor is arranged to coordinate transmission with in described driving gear and described driven gear.

11. power drive systems for vehicle according to claim 9, is characterized in that, described first dynamotor is arranged to be connected with in described output shaft with described first input shaft.

12. power drive systems for vehicle according to claim 11, is characterized in that, described first dynamotor and described engine unit coaxially arranged.

13. power drive systems for vehicle according to claim 6, it is characterized in that, described multiple input shaft comprises the first input shaft, the second input shaft and the 3rd input shaft, described second input shaft is set on described first input shaft, and described 3rd input shaft is set on described second input shaft.

14. power drive systems for vehicle according to claim 13, is characterized in that, also comprise:

Three power-transfer clutchs, described three power-transfer clutchs have input end, the first mouth, the second mouth and the 3rd mouth, described engine unit is connected with the input end of described three power-transfer clutchs, and the first mouth of described three power-transfer clutchs is connected with described first input shaft, the second mouth of described three power-transfer clutchs is connected with described second input shaft and the 3rd mouth of described three power-transfer clutchs is connected with described 3rd input shaft.

15. power drive systems for vehicle according to claim 4, is characterized in that, described efferent comprises output gear and engages gear ring, and described output gear can rotate by differential relative to described output shaft, and described joint gear ring and described output gear are fixed.

16. power drive systems for vehicle according to claim 15, is characterized in that, described output gear is main reduction gear driving gear.

17. power drive systems according to claim 3, is characterized in that, described driven gear is connection gear structure, and empty set is arranged on described output shaft; And

Described synchro to be located on described output shaft and selectively with described gear structural engagement.

18. power drive systems according to claim 17, it is characterized in that, described input shaft comprises the first input shaft and the second input shaft, described second input shaft is set on described first input shaft, and each in described first input shaft and described second input shaft is all fixed with a driving gear;

Described gear structure is dual gear, and described dual gear has the first gear part and the second gear part, and described first gear part and described second gear part engage accordingly with two described driving gears respectively.

19. power drive systems for vehicle according to any one of claim 1-18, is characterized in that, also comprise:

Second dynamotor, the mouth of described second dynamotor is arranged to carry out coordinating transmission with described efferent.

20. power drive systems for vehicle according to claim 19, is characterized in that, also comprise:

Battery component, described battery component is connected with described first dynamotor and/or described second dynamotor respectively.

21. power drive systems for vehicle according to claim 4, it is characterized in that, at described synchro from during being converted to the off-state that described efferent disconnects the engagement state engaged with described efferent, described first dynamotor is for regulating the rotating speed of described output shaft.

22. power drive systems for vehicle according to claim 19, it is characterized in that, at described synchro from during being converted to the off-state that described efferent disconnects the engagement state engaged with described efferent, described second dynamotor is for regulating the rotating speed of described efferent.

23. power drive systems for vehicle according to claim 19, it is characterized in that, at described synchro from during being converted to the off-state that described efferent disconnects the engagement state engaged with described efferent, described first dynamotor for regulate the rotating speed of described output shaft and described second dynamotor for regulating the rotating speed of described efferent.

24. power drive systems for vehicle according to any one of claim 1-18, it is characterized in that, described efferent is arranged for driving pair of wheels; And

Described power drive system also comprises:

Second dynamotor, described second dynamotor is arranged for driving second pair of wheel, and described pair of wheels is front-wheel or trailing wheel, and described second pair of wheel is the another one in described front-wheel and described trailing wheel.

25. power drive systems for vehicle according to claim 24, is characterized in that, described second dynamotor is one, and described second dynamotor drives described second pair of wheel by speed-changing mechanism.

26. power drive systems for vehicle according to claim 25, is characterized in that, described speed-changing mechanism is speed reduction gearing.

27. 1 kinds for the power drive system of vehicle, is characterized in that, comprising:

Engine unit;

Double-clutch, described double-clutch has input shaft, the first mouth and the second mouth, and the mouth of described engine unit is connected with the input end of described double-clutch;

First input shaft and the second input shaft, described first input shaft is connected with described first mouth and described second input shaft is connected with described second mouth, described second input shaft is set on described first input shaft coaxially, and described first input shaft and described second input shaft are fixedly installed a driving gear respectively;

Output shaft, described output shaft is fixedly installed two driven gears, and described two driven gears engage accordingly with the driving gear on described first input shaft and described second input shaft respectively;

First dynamotor, described first dynamotor is by driving gear indirect drive described in intermediate gear and one of them;

Main reduction gear driving gear, described main reduction gear driving gear can rotate by differential relative to described output shaft;

Engage gear ring, described joint gear ring and described main reduction gear driving gear are fixed;

Diff, described diff is provided with main reduction gear driven gear, and described main reduction gear driven gear engages with described main reduction gear driving gear, and described diff is located between two front-wheels;

Synchro, described synchro to be arranged on described output shaft and to be arranged to optionally engage described joint gear ring; And

Second dynamotor, described second dynamotor drives two trailing wheels by speed reduction gearing.

28. 1 kinds of vehicles, is characterized in that, comprise the power drive system for vehicle according to any one of claim 1-27.