CN106555857B - Power-driven system and vehicle with it - Google Patents

Power-driven system and vehicle with it Download PDF

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Publication number
CN106555857B
CN106555857B CN201510626326.XA CN201510626326A CN106555857B CN 106555857 B CN106555857 B CN 106555857B CN 201510626326 A CN201510626326 A CN 201510626326A CN 106555857 B CN106555857 B CN 106555857B
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China
Prior art keywords
gear
power
output shaft
planet carrier
driven
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CN201510626326.XA
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Chinese (zh)
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CN106555857A (en
Inventor
凌和平
翟震
郑峰
徐友彬
罗永孟
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BYD Co Ltd
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BYD Co Ltd
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Priority to CN201510626326.XA priority Critical patent/CN106555857B/en
Publication of CN106555857A publication Critical patent/CN106555857A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H48/00—Differential gearings
    • F16H48/06—Differential gearings with gears having orbital motion
    • F16H48/10—Differential gearings with gears having orbital motion with orbital spur gears
    • F16H48/11—Differential gearings with gears having orbital motion with orbital spur gears having intermeshing planet gears
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing
    • B60K17/165—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing provided between independent half axles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Retarders (AREA)

Abstract

The invention discloses a kind of power-driven system and vehicles.The power-driven system includes: differential mechanism, differential mechanism includes: the first and second planet carriers, the first and second planetary gears, the first and second gear rings, first and second planetary gears are separately positioned on the first and second planet carriers, first and second planetary gears are engaged with the first and second gear rings respectively, and the second planetary gear is also engaged with the first planetary gear；Speed changer and engine, speed changer are connected with engine and differential mechanism respectively, and the power of generation can be passed through output after speed changer to the power intake of differential mechanism by engine；First and second output sections, the first and second output sections are linked with the first and second gear rings respectively；First and second motor generators, the first and second motor generators link with the first and second output sections respectively.The differential mechanism of power-driven system of the invention realizes differential function using planet differential principle, compact-sized, simple.

Description

Power-driven system and vehicle with it
Technical field
The present invention relates to a kind of power-driven systems for vehicle, the vehicle with the power-driven system.
Background technique
In a kind of differential art known for inventor, differential mechanism include main reducing gear driven gear (it is main subtract it is driven Gear), planetary gear, centre wheel etc., planetary gear is mounted on the subplate of driven gear by square shaft, axle sleeve, and and center Wheel engagement realizes its rotation and locomotive function with revolute pair and plane prismatic pair, and centre wheel passes through angular positioning pin and cylindrical pair Or spline and left and right two halves axis connection, achieve the purpose that output torque.This differential mechanism eliminates original differential mechanism or so shell The components such as body, planetary gear shaft use the subplate that planetary gear is directly mounted on the driven gear of main reducing gear by square shaft and axle sleeve instead On, the number of parts of differential mechanism is effectively reduced, structure is simplified, alleviates weight.
But this differential mechanism is utilized symmetrical bevel gear structure and realizes differential between wheel, just for traditional symmetrical The part of formula bevel differential is innovated, and excessive this differential design axial dimension, shell and cone tooth can not be really solved The shortcomings that taking turns big quality and reliability relative deviation.
Summary of the invention
The present invention is directed to solve one of above-mentioned technical problem in the prior art at least to a certain extent.
For this purpose, the differential mechanism of the power-driven system utilizes planet differential the invention proposes a kind of power-driven system Principle realizes differential function, compact-sized, simple.
The invention also provides a kind of vehicles with the power drive system.
Power-driven system according to an embodiment of the present invention, comprising: differential mechanism, the differential mechanism include: first planet carrier, First planetary gear and the first gear ring, first planetary gear are arranged in the first planet carrier, first planetary gear and institute State the engagement of the first gear ring；Second planet carrier, the second planetary gear and the second gear ring, second planetary gear are arranged in second row In carrier, second planetary gear is engaged with second gear ring and second planetary gear is also nibbled with first planetary gear It closes；Wherein, first gear ring and second gear ring constitute two power output ends of the differential mechanism, first planet Frame and second planet carrier constitute the power intake of the differential mechanism；Speed changer and engine, the speed changer respectively with The engine is connected with the differential mechanism, and the power of generation can be passed through output after the speed changer to institute by the engine State the power intake of differential mechanism；And first output section and the second output section, first output section and first gear ring Linkage, second output section and second gear ring link；First motor generator and the second motor generator, described first Motor generator and first output section are linked, and second motor generator and second output section are linked.
The differential mechanism of power-driven system according to an embodiment of the present invention realizes differential function, knot using planet differential principle Structure is compact, simple.
In addition, power-driven system according to an embodiment of the present invention can also have following additional technical feature:
According to some embodiments of the present invention, the speed changer includes power output shaft and multiple input shafts；
One of input shaft in the multiple input shaft is arranged to optionally link with the power output shaft, The power output shaft is arranged to also link with the power intake of the differential mechanism.
According to some embodiments of the present invention, the power output shaft overhead set is provided with empty set driven gear, the sky It covers driven gear and one of input shaft links, the power-driven system further includes synchronizer, and the synchronizer is set It is set to for synchronizing the power output shaft and the empty set driven gear.
According to some embodiments of the present invention, the power output shaft overhead set is provided with empty set driven gear and fixation Be provided with fixed driven gear, the power-driven system further includes synchronizer: the synchronizer is arranged for synchronizing described Power output shaft and the empty set driven gear；
Fixed driving gear is fixedly installed on each input shaft, the empty set driven gear and the fixation are driven Gear is engaged with corresponding fixed driving gear respectively.
According to some embodiments of the present invention, multiple fixed driving gears, institute are fixedly installed on each input shaft It states power output shaft overhead set and is provided with multiple empty set driven gears, the empty set driven gear and corresponding fixed driving gear Engagement, each empty set driven gear can be bonded to the power output shaft by synchronizing for corresponding gear synchronizer.
According to some embodiments of the present invention, the speed changer includes power output shaft and multiple input shafts；
Each input shaft be arranged to the power output shaft link, the power output shaft be arranged to also with it is described The power intake of differential mechanism links.
According to some embodiments of the present invention, multiple fixed driven gears are fixedly installed on the power output shaft, often It is fixedly installed fixed driving gear on a input shaft, the fixed driven gear and the corresponding fixed driving gear Engagement.
According to some embodiments of the present invention, the speed changer include the first input shaft and the second input shaft, described second Input axle sleeve is located on first input shaft, and the power-driven system further includes engine, the engine and described the It is connected between one input shaft, second input shaft by double clutch.
According to some embodiments of the present invention, the power output shaft and the first planet carrier, second planet carrier It is coaxial fixed.
According to some embodiments of the present invention, first output section is left half axle gear, and second output section is the right side Axle shaft gear；And
It is provided with the first external tooth on first gear ring, is provided with the second external tooth on second gear ring, outside described first Tooth is engaged with the left half axle gear, and second external tooth is engaged with the right axle shaft gear.
According to some embodiments of the present invention, the speed changer includes:
Multiple input shafts and multiple power output shafts, each power output shaft are arranged to that the engine can will be come from Power output to the differential mechanism power intake.
According to some embodiments of the present invention, the speed changer further include:
The power intake of reverse output gear and reverse idler gear, the reverse output gear and the differential mechanism joins Dynamic, the reverse idler gear is engaged with the reverse output gear, and the reverse idler gear empty set is in the multiple power Described wherein one can be bonded on one of power output shaft in output shaft and by the synchronous effect of reverse gear synchronizer A power output shaft.
According to some embodiments of the present invention, one of power output shaft overhead set is provided with power output shaft sky Output gear is covered, the power output shaft empty set output gear and the reverse idler gear share the reverse gear synchronizer, The fixed output gear of power output shaft, the fixed output gear of the power output shaft are fixedly installed on remaining each power output shaft Wheel links with the power intake of the differential mechanism respectively with the power output shaft empty set output gear.
According to some embodiments of the present invention, power-driven system further include:
Jackshaft, the jackshaft are coaxially fixed with the first planet carrier and second planet carrier, the jackshaft On be fixedly installed countershaft-gear, the countershaft-gear respectively with the fixed output gear of the power output shaft, described dynamic Power output shaft empty set output gear and reverse output gear engagement.
According to some embodiments of the present invention, power-driven system further include: third motor generator, the third are electronic Generator is connected with the speed changer, and the third motor generator can be exported the power of generation to institute by the speed changer State the power intake of differential mechanism.
According to some embodiments of the present invention, first planetary gear partially weighs in the axial direction with second planetary gear It is folded.
According to some embodiments of the present invention, first planetary gear includes: the first teeth portion and the second teeth portion, and described second Planetary gear includes: third teeth portion and the 4th teeth portion, and first teeth portion is engaged with first gear ring, second teeth portion and institute It states third teeth portion to correspond to overlapping in the axial direction and engage cooperation, the 4th teeth portion is engaged with second gear ring.
According to some embodiments of the present invention, first planetary gear and the second planetary gear are roller gear.
According to some embodiments of the present invention, each of first gear ring and second gear ring include:
The annular side wall portion in body panels portion and the outer periphery that the body panels portion is set, the annular side wall portion It is provided with multiple teeth on inner wall, cavity, first tooth are limited between the body panels portion and the annular side wall portion The cavity of the cavity of circle and second gear ring is toward each other to constitute installation space, the first planet carrier and the first row Star-wheel and second planet carrier and second planetary gear are accommodated in the installation space.
According to some embodiments of the present invention, first gear ring and second gear ring are provided with gap in the axial direction.
According to some embodiments of the present invention, each first planetary gear is configured with first planet wheel spindle, described Two ends of the first planet wheel spindle are connected with the first planet carrier and second planet carrier respectively, each second row Star-wheel be configured with second planet wheel spindle, two ends of second planet wheel spindle respectively with the first planet carrier and institute The second planet carrier is stated to be connected.
According to some embodiments of the present invention, the revolution of the revolution axis and second planetary gear of first planetary gear Axis is overlapped, and the revolution-radius of first planetary gear is identical as the revolution-radius of second planetary gear.
According to some embodiments of the present invention, the speed changer includes the first input shaft, the second input shaft and third input Axis, the third input axle sleeve are located on second input shaft, and second input axle sleeve is located on first input shaft, Pass through three clutch phases between the engine and first input shaft, second input shaft and the third input shaft Even.
According to some embodiments of the present invention, first gear ring and the near front wheel link, second gear ring and off-front wheel Linkage；
The power-driven system further include:
4th motor generator and the 5th motor generator, the 4th motor generator and left rear wheel link, and described the Five motor generators and off hind wheel link；And
Anti-skidding synchronizer, the anti-skidding synchronizer are arranged to optionally synchronize the left rear wheel and off hind wheel, thus So that the left rear wheel and the off hind wheel synchronous rotary.
Vehicle according to an embodiment of the present invention, the power-driven system including above-described embodiment.
Detailed description of the invention
Fig. 1 is the explosive view of differential mechanism according to an embodiment of the present invention；
Fig. 2 is the explosive view at another visual angle of differential mechanism according to an embodiment of the present invention；
Fig. 3 is the perspective view of differential mechanism according to an embodiment of the present invention；
Fig. 4 is the plan view schematic diagram of differential mechanism according to an embodiment of the present invention；
Fig. 5 is the perspective view of differential mechanism according to an embodiment of the present invention, wherein the second planet carrier and the second gear ring is not shown Deng；
Fig. 6 is the mesh schematic representation of the first planetary gear and the second planetary gear；
Fig. 7 is the theory of engagement schematic diagram of the first planetary gear and the second planetary gear；
Fig. 8 is the perspective view of the first gear ring or the second gear ring according to an embodiment of the present invention；
Fig. 9 is the perspective view of the first gear ring or the second gear ring in accordance with another embodiment of the present invention；
Figure 10 is the schematic diagram of power-driven system according to an embodiment of the invention；
Figure 11 is the schematic diagram of power-driven system in accordance with another embodiment of the present invention；
Figure 12 is the schematic diagram of the power-driven system of further embodiment according to the present invention；
Figure 13 is the schematic diagram of the power-driven system of further embodiment according to the present invention；
Figure 14 is the schematic diagram of the power-driven system of further embodiment according to the present invention；
Figure 15 is the schematic diagram of the power-driven system of further embodiment according to the present invention；
Figure 16 is the schematic diagram of the power-driven system of further embodiment according to the present invention；
Figure 17 is the schematic diagram of the power-driven system of further embodiment according to the present invention；
Figure 18 is the schematic diagram of the power-driven system of further embodiment according to the present invention；
Figure 19 is the schematic diagram of the power-driven system of further embodiment according to the present invention；
Figure 20 is the schematic diagram of the power-driven system of further embodiment according to the present invention；
Figure 21 is the schematic diagram of the power-driven system of further embodiment according to the present invention；
Figure 22 is the schematic diagram of the power-driven system of further embodiment according to the present invention；
Figure 23 is the schematic diagram of vehicle according to an embodiment of the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of The description present invention and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with spy Fixed orientation construction and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is at least two, such as two It is a, three etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc. Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect It connects, is also possible to be electrically connected or can communicate with each other；It can be directly connected, can also indirectly connected through an intermediary, it can To be the interaction relationship of connection or two elements inside two elements.For the ordinary skill in the art, The specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower" It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above " Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of First feature horizontal height is less than second feature.
Power-driven system 1000 according to an embodiment of the present invention, the power drive line are described in detail below with reference to accompanying drawings System 1000 can be applied in vehicle.
As shown in Figure 10, according to some embodiments of the invention power-driven system 1000 mainly includes differential mechanism 100, becomes Fast device 104, engine 301, the first motor generator 501 and the second motor generator 502.Wherein speed changer 104 respectively with hair Motivation 301 is connected with differential mechanism 100, and the power of generation can be passed through output after speed changer 104 to differential mechanism by engine 301 100 power intake (such as first planet carrier 11 and second planet carrier 21), that is to say, that speed changer 104 can will come from The power of engine 301 passes through power intake (such as first planet carrier 11 and the of output after chronotropic action to differential mechanism 100 Two planet carriers 21).First motor generator 501, the first gear ring 13 link with the first output section 601, the second motor generator 502, the second gear ring 23 links with the second output section 602.
In a further embodiment, as shown in Figure 11-Figure 19, power-driven system 1000 further includes third motor generator 401, third motor generator 401 is connected with speed changer 104, and the power that third motor generator 401 generates can pass through speed change It is exported after device 104 to the power intake (such as first planet carrier 11 and second planet carrier 21) of differential mechanism 100, that is to say, that In the embodiment, speed changer 104 can be made the power from engine 301 and/or third motor generator 401 by speed change With the power intake of rear output to differential mechanism 100.It, will for the connection type of third motor generator 401 and speed changer 104 It is discussed in detail in conjunction with specific embodiments below.
It is described in detail first below according to specific structure of the illustrated embodiment to differential mechanism 100, for power drive Other constructions of system 1000 will describe after differential mechanism 100 is discussed in detail and constructs.
It is described in detail first below according to specific structure of the illustrated embodiment to differential mechanism 100, for power drive Other constructions of system 1000 will describe after differential mechanism 100 is discussed in detail and constructs.
Differential mechanism 100 according to an embodiment of the present invention is described in detail below with reference to Fig. 1-Fig. 9, the differential mechanism 100 Differential or shaft space difference speed between can be used for taking turns, for for differential between taking turns, which can make driving wheels exist Vehicle turning traveling is rolled when driving with different angular speed in uneven road surface, pure to guarantee to make between two side drive wheels and ground Rolling movement.
As shown in Figure 1, differential mechanism 100 according to some embodiments of the invention may include first planet carrier 11, the first row Star-wheel 12 and the first gear ring 13 and the second planet carrier 21, the second planetary gear 22 and the second gear ring 23.
In conjunction with the embodiment of Fig. 1 and Fig. 5, first planet carrier 11 and the second planet carrier 21 are it is so structured that circular plate Structure can reduce the axial dimension of differential mechanism 100 to a certain extent in this way.In some embodiments, first planet carrier 11 It can be split type structure with the second planet carrier 21, since the molding of independent widget is relatively easy, by 11 He of first planet carrier Second planet carrier 21, which is individually processed, can simplify manufacturing process, improves machining accuracy.
Such as shown in Fig. 1, Fig. 3, Fig. 5 and combination Fig. 6-Fig. 7, the first planetary gear 12 is arranged in first planet carrier 11, for example, Each first planetary gear 12 is configured with first planet wheel spindle 14, and two ends difference of the first planet wheel spindle 14 is rotationally It is supported in first planet carrier 11 and the second planet carrier 21, two ends of such as the first planet wheel spindle 14 can be turned by bearing It is supported in the axis hole to correspond to each other on first planet carrier 11 and the second planet carrier 21 dynamicly, the first planetary gear 12 can be fixed at this time In on corresponding first planet wheel spindle 14.Certainly, two ends of the first planet wheel spindle 14 and first planet carrier 11 and the second row What carrier 12 was also possible to be fixedly connected, for example, the first planet wheel spindle 14 two ends respectively with first planet carrier 11 and second The axis hole to correspond to each other on planet carrier 12 is welded and fixed, and the first planetary gear 12 is rotatably sleeved on corresponding first planet at this time On wheel shaft 14, such as the first planetary gear 12 can be rotatably mounted around on the first planet wheel spindle 14 by bearing.Pass through as a result, The purpose of connection first planet carrier 11 and the second planet carrier 21 may be implemented in first planet wheel spindle 14, so that first planet carrier 11 and second planet carrier 21 keep movement (i.e. first planet carrier 11 and the second planet carrier 21 linkage) synchronized, in the same direction.And it uses This connection type, Gu first planet carrier 11 and the second planet carrier 21 well the first planet wheel spindle 14 can support/ It is fixed, prevent the first planet wheel spindle 14 to be disconnected with single planet carrier and differential mechanism 100 is caused to fail.
Shown in Figure 3, the first planetary gear 12 is engaged with the first gear ring 13, concretely internal messing form, i.e. the first row Star-wheel 12 be located at the inside of the first gear ring 13 and with the tooth engagement on the first gear ring 13.First planetary gear 12 is preferably several, and And circumferentially equidistantly distributed is in 13 inside of the first gear ring, for example, as a preferred embodiment, the first planetary gear 12 can It is three, and interval angles are 120 ° between two the first planetary gears 12 of arbitrary neighborhood.
Similarly, such as shown in Fig. 1, Fig. 3, Fig. 5 and combination Fig. 6-Fig. 7, the second planetary gear 22 is arranged in the second planet carrier 21 On, for example, each second planetary gear 22 is configured with second planet wheel spindle 24, two ends of such as the second planet wheel spindle 24 can It is rotatably supported in the axis hole to correspond to each other in first planet carrier 11 and the second planet carrier 21 by bearing, at this time second Planetary gear 22 is securable on corresponding second planet wheel spindle 24.Certainly, two ends of the second planet wheel spindle 24 and the first row What carrier 11 and the second planet carrier 12 were also possible to be fixedly connected, for example, the second planet wheel spindle 24 two ends respectively with first The axis hole to correspond to each other on planet carrier 11 and the second planet carrier 12 is welded and fixed, and the second planetary gear 22 is rotatably sleeved at this time On corresponding second planet wheel spindle 24, such as the second planetary gear 22 can be rotatably mounted around the second planet wheel spindle by bearing On 24.The purpose of connection first planet carrier 11 and the second planet carrier 21 may be implemented by the second planet wheel spindle 24 as a result, thus So that first planet carrier 11 and the second planet carrier 21 keep movement synchronized, in the same direction.And use this connection type, the first planet Frame 11 and the second planet carrier 21 can support/fix to the second planet wheel spindle 24 well, prevent the second planet wheel spindle 24 It is disconnected with single planet carrier and differential mechanism 100 is caused to fail.
In addition, in other embodiments of the invention, in order to keep first planet carrier 11 and the second planet carrier 21 can At the same speed, it moves, can also be directly fixedly connected with first planet carrier 11 with the second planet carrier 21 by intermediate member, also in the same direction It is to say, synchronized, the in the same direction movement of first planet carrier 11 and the second planet carrier 21 can be through the first planet in above example Wheel shaft 14 and the second planet wheel spindle 24 are realized, and the embodiment directly can realize the first planet by setting intermediate member The movement synchronized, in the same direction of frame 11 and the second planet carrier 21, such as the intermediate member can be located at first planet carrier 11 and the second row It is welded and fixed between carrier 21 and respectively with first planet carrier 11 and the second planet carrier 21.
Shown in Figure 3, the second planetary gear 22 is engaged with the second gear ring 23, concretely internal messing form, i.e. the second row Star-wheel 22 be located at the inside of the second gear ring 23 and with the tooth engagement on the second gear ring 23.Second planetary gear 22 is preferably several, and And circumferentially equidistantly distributed is in 23 inside of the second gear ring, for example, as a preferred embodiment, the second planetary gear 22 can It is three, and interval angles are 120 ° between two the second planetary gears 22 of arbitrary neighborhood.
Wherein, it should be noted that Fig. 3 is the plan view schematic diagram according to the differential mechanism 100 of the embodiment of the present invention, wherein Schematically show the meshing relation and the first planetary gear 12 and first between the first planetary gear 12 and the second planetary gear 22 The meshing relation of gear ring 13, the second planetary gear 22 and the second gear ring 23, since Fig. 3 is plan view, and at the same time showing above-mentioned Three kinds of meshing relations, therefore the relative positional relationship of each component is only illustrative, and is not offered as or implies the reality of each component Space layout position.
It is in multiple embodiments in the first planetary gear 12 and the second planetary gear 22, it is preferable that multiple first planetary gears 12 and multiple second planetary gears 22 respectively correspondingly engage.For example, as shown in Figure 1 and Figure 4, the first planetary gear 12 and the second planet Wheel 22 is three, then first the first planetary gear 12 can be engaged with corresponding first the second planetary gear 22, and second first Planetary gear 12 can be engaged with corresponding second the second planetary gear 22, and third the first planetary gear 12 can be with corresponding third the , there is the first planetary gear 12 and the second planetary gear 22 that multiple groups are engaged with each other in the engagement of two planetary gears 22, pass in differential mechanism 100 in this way When defeated power, power multiple groups correspond to each other engagement the first planetary gear 12 and the second planetary gear 22 between transmitting will be more steady It is fixed, reliable.
In addition, being another multiple embodiments, multiple first planets in the first planetary gear 12 and the second planetary gear 22 Wheel 12 and the circumferentially alternating arrangement of multiple second planetary gears 22, and the first planetary gear 12 and the second planetary gear 22 of arbitrary neighborhood Engagement.That is, in this embodiment, multiple first planetary gears 12 and the circumferentially alternating arrangement of multiple second planetary gears 22 are simultaneously An annular is formed, two the second planetary gears 22 engagement adjacent thereto of each first planetary gear 12, similarly, each Second planetary gear 22, two the first planetary gears 12 engagement all adjacent thereto.
Wherein, referring to the embodiment of Fig. 3, the revolution axes O of the revolution axes O of the first planetary gear 12 and the second planetary gear 22 It is overlapped, and revolution-radius (the i.e. central axis distance revolution axes O of planetary gear of the first planetary gear 12 and the second planetary gear 22 Distance) it is identical.
Particularly, as shown in Fig. 1-Fig. 2, Fig. 4-Fig. 7, the first planetary gear 12 engages cooperation with the second planetary gear 22.Change speech It is not only engaged with the first gear ring 13 for the first planetary gear 12, while also being engaged with the second planetary gear 22, for It for second planetary gear 22, not only engages with the second gear ring 23, while also being engaged with the first planetary gear 12.
As shown in figure 3, the first gear ring 13 and the second gear ring 23 may be constructed two power output ends of differential mechanism 100, the One planet carrier 11 and the second planet carrier 21 then correspond to the power intake for constituting differential mechanism 100 (for example, first planet carrier 11 at this time Can be rigidly connected with the second planet carrier 21), the power of such external power supply output can be from 11 He of first planet carrier The input of second planet carrier 21 can be exported from the first gear ring 13 and the second gear ring 23 respectively after the differential action of differential mechanism 100. At this point, first planet carrier 11 and the second planet carrier 21 can connect the power such as engine, motor as optional embodiment Source, the first gear ring 13 and the second gear ring 23 can be connected by gear transmission structure and corresponding semiaxis, semiaxis again with corresponding vehicle Wheel is connected, but not limited to this.
Differential between taking turns is applied to the differential mechanism 100 below, the first gear ring 13 and the second gear ring 23 constitute differential mechanism 100 Simple declaration is poor for the power intake of power output end, first planet carrier 11 and the second planet carrier 21 composition differential mechanism 100 The working principle of fast device 100, wherein the first gear ring 13 can be connected by external tooth with left half axle at this time, left half axle can be with left side wheel It is connected, the second gear ring 23 can be connected by external tooth with right axle shaft, and right axle shaft can be connected with right side wheels, power source such as engine And/or the power of motor output can be by exporting after the decelerating effect of main reducing gear to first planet carrier 11 and the second planet carrier 21.If vehicle driving is turned on smooth road surface and not at this time, theoretically revolving speed is identical for left side wheel and right side wheels, at this time Differential mechanism 100 does not play differential action, and first planet carrier 11 and the second planet carrier are 21 synchronized, rotate in same direction, the first gear ring 13 and the Two gear rings 23 are synchronized, rotate in same direction, the first planetary gear 12 and the second planetary gear 22 revolution, not rotations.If vehicle driving at this time It is travelled on the road surface of out-of-flatness or vehicle turning, theoretically revolving speed is different for left side wheel and right side wheels, 13 He of the first gear ring The revolving speed of second gear ring 23 is also different, that is, there is rotational speed difference, and the first planetary gear 12 and the second planetary gear 22 are in the same of revolution at this time When also rotation, the first planetary gear 12 and the second planetary gear 22 from the change of team so that one in the first gear ring 13 and the second gear ring 23 Speedup, another deceleration, the rotational speed difference of the gear ring of the gear ring and deceleration of speedup is the rotational speed difference of left and right wheels, to realize difference Speed effect.
To sum up, differential mechanism 100 according to an embodiment of the present invention utilizes planet differential principle, in structure and type of attachment overhead Between utilization rate it is higher, axial dimension is smaller, and production and fit on it is more advantageous.Such structure type not only can be with Avoid angular wheel axially and radially on dimensional defects, additionally can preferably using master subtract in driven gear inside Preferably space utilization rate is realized in empty space, greatly facilitates the arrangement of 100 assembly of differential mechanism and big to weight Small limitation, while also having higher reliability and more preferably transmission efficiency, be conducive to improve the reliable of power chain Property and it is excessively curved when power output fluency, this for symmetrical bevel differential have more practicability.
The first row star-wheel 12 and the meshing relation of the second planetary gear 22 are described in detail in conjunction with specific embodiments below.
Referring to shown in Fig. 3, Fig. 5-Fig. 7, the first planetary gear 12 and the second planetary gear 22 are on axial direction (left and right directions in Fig. 7) It partly overlapping, that is to say, that the first planetary gear 12 only overlaps with the second planetary gear 22, and part in addition is staggered, and first The part that the part of planetary gear 12 and the overlapping of the second planetary gear 22 can be engaged with each other, and be staggered can then be engaged with respective gear ring.
Specifically, in conjunction with shown in Fig. 6 and Fig. 7, the first planetary gear 12 may include the first teeth portion 151 and the second teeth portion 152 (using K2 dotted line in Fig. 7 as line of demarcation), the second planetary gear 22 may include third teeth portion 153 and the 4th teeth portion 154 (in Fig. 7 K1 dotted line is line of demarcation), the second teeth portion 152 and third teeth portion 153 constitute lap, i.e. the second teeth portion 152 and third teeth portion 153 overlappings corresponding in the axial direction and engagement cooperation, the first teeth portion 151 and the 4th teeth portion 154 be staggered in the axial direction and with it is respectively right The gear ring engagement answered, i.e., the first teeth portion 151 is engaged with the first gear ring 13, and the 4th teeth portion 154 is engaged with the second gear ring 23.
As a result, the axial dimension of differential mechanism 100 is more compact, the volume of differential mechanism 100 is more compact, is conducive to differential The installation of device 100, arrangement.
The power intake to differential mechanism 100 and power output end are described in detail in conjunction with specific embodiments below.
As shown in connection with fig. 3, differential mechanism 100 further includes differential input shaft 31,32 and differential output shaft 41,42, differential Device input shaft 31,32 is connected with first planet carrier 11 and the second planet carrier 21 respectively, such as in the example of fig. 3, first planet carrier 11 left side is connected with a differential input shaft 31, and the right side of the second planet carrier 21 is connected with the input of another 32 differential mechanism Axis.Differential output shaft 41,42 is connected with the first gear ring 13 and the second gear ring 23 respectively, such as in the example of fig. 3, the first gear ring 13 left side is connected with a differential output shaft 41, and the right side of the second gear ring 23 is connected with another differential output shaft 42. Differential input shaft 31,32, the 41,42, first gear ring 13 of differential output shaft and the second gear ring 23 can be coaxially arranged.
Further, as shown in figure 3, differential input shaft includes: the first differential input shaft 31 and the input of the second differential mechanism Axis 32, the first differential input shaft 31 are connected with first planet carrier 11, the second differential input shaft 32 and 21 phase of the second planet carrier Even, differential output shaft may include: the first differential output shaft 41 and the second differential output shaft 42, the output of the first differential mechanism Axis 41 is connected with the first gear ring 13, and the second differential output shaft 42 is connected with the second gear ring 23,31 He of the first differential input shaft Second differential input shaft 32 and the first differential output shaft 41 and the second differential output shaft 42 can be hollow shaft structure, It is wherein used as preferred embodiment, the first differential output shaft 41 is coaxially set on the first differential input shaft 31, the Two differential output shafts 42 are coaxially set on the second differential input shaft 32, and thus 100 structure of differential mechanism is more compact, body Product is smaller.
However, above-mentioned differential input shaft, differential output shaft are only a kind of optional embodiments.And in Figure 10-figure In the embodiment of 22 power-driven system, differential mechanism 100 is the external output power of external tooth by gear ring, and referring to figure 10- Figure 13, Figure 15-Figure 22, the power output shaft 103 of speed changer 104 then can directly with first planet carrier 11 and the second planet carrier 21 is coaxial connected, and passes through jackshaft 701 and first planet carrier referring to Figure 14, power output shaft 103a, 103b of speed changer 104 11 and second planet carrier 21 link, jackshaft 701 and first planet carrier 11 and the coaxial fixation of the second planet carrier 21.
According to some embodiments of the present invention, the number of teeth of the first gear ring 13 is equal with the number of teeth of the second gear ring 23, the first row The number of teeth of star-wheel 12 is equal with the number of teeth of the second planetary gear 22.
According to some embodiments of the present invention, the first planetary gear 12 and the second planetary gear 22 are roller gear, compared to biography Unite symmetrical bevel differential, it is more compact using 100 structure of differential mechanism of roller gear, specifically, its in structure and Space utilization rate is higher in type of attachment, and axial dimension is smaller, and more advantageous in production and fit on.
The structure of the first gear ring 13 and the second gear ring 23 is described in detail combined with specific embodiments below.
In some embodiments of the invention, the first gear ring 13 and the second gear ring 23 are symmetrical structure, in other words, the first tooth Circle 13 and the second gear ring 23 are symmetrical arranged, and can be increased the versatility of gear ring in this way, be reduced cost.
Specifically, such as Fig. 1 and as shown in connection with fig. 3, each of the first gear ring 13 and the second gear ring 23 include: main body The annular side wall portion 162 of flat part 161 and the outer periphery that body panels portion 161 is set, body panels portion 161 and annular sidewall Portion 162 can be integrated molding component.Be provided with multiple gear teeth on the inner wall of annular side wall portion 162, body panels portion 161 with Cavity A1, A2 is limited between annular side wall portion 162 (referring to Fig. 3), that is to say, that the body panels portion 161 of the first gear ring 13 Cavity A1 is limited between annular side wall portion 162, between the body panels portion 161 and annular side wall portion 162 of the second gear ring 23 Cavity A2 is limited, the cavity A2 in cavity A1 and the second gear ring 23 in the first gear ring 13 is toward each other to constitute installation space A (referring to Fig. 3), wherein first planet carrier 11 and the first planetary gear 12 and the second planet carrier 21 and the second planetary gear 22 are accommodated in In installation space A, so that the structure of differential mechanism 100 is relatively more compact, it is smaller to occupy volume, it is easier to arrange, simultaneously First gear ring 13 and the second gear ring 23 serve as the function of external shell, can protect and be accommodated in planet carrier and planetary gear therein, Improve the service life.In addition, the installation space A that the first gear ring 13 and the second gear ring 23 are limited comparatively is closed, external sundries It is not easily accessible in installation space A and influences moving component, ensure that the steady operation of differential mechanism 100.
As shown in connection with fig. 2, the first gear ring 13 and the second gear ring 23 are provided with clearance D in the axial direction, that is to say, that the first tooth Circle 13 is separated from each other in the axial direction with the second gear ring 23, not fits closely.To those skilled in the art, due to The width of the engaging portion of one planetary gear 12 and the second planetary gear 22 determines the size of the clearance D, i.e. the first planetary gear 12 with The width of the engaging portion of second planetary gear 22 is equal with the minimum value of the clearance D, therefore passes through control 12 He of the first planetary gear The width of second planetary gear, 22 engaging portion, can indirectly control the size of the clearance D, to those skilled in the art, Guaranteeing that the first planetary gear 12 and the second planetary gear 22 being capable of stable delivery power and the first planetary gears 12 and the second planetary gear Under the premise of 22 service life, the width of the first planetary gear 12 and the engaging portion of the second planetary gear 22 can be arranged opposite It is relatively narrow, the clearance D can be effectively reduced in this way, so that the axial dimension of differential mechanism 100 is smaller, more compact, be easy to arrange.
It should be noted that the clearance D of above-mentioned Fig. 3 (in conjunction with Fig. 1-Fig. 2) refers to the annular side wall portion of the first gear ring 13 162 and second gear ring 23 the distance between annular side wall portion 162.For example, see the embodiment of Fig. 1, Fig. 2 and Fig. 3, the first tooth Circle 13 and the second gear ring 23 all include body panels portion 161 and annular side wall portion 162.
And in other embodiments of the invention, in the embodiment such as referring to Fig. 8 and Fig. 9, the first gear ring 13 and second Each of gear ring 23 still further comprises annular flange portion 163, and annular flange portion 163 is from the end face of annular side wall portion 162 Extend to the direction far from body panels portion 161, in the embodiment in fig. 8, the internal diameter of annular flange portion 163 can be with annular sidewall The outer diameter in portion 162 is generally equalized, and such annular flange portion 163 is equivalent to radially protrudes outward annular side wall portion 162 (i.e. The outer peripheral surface of one gear ring 13 or the second gear ring 23).And in the embodiment in fig. 9,163 outer diameter of annular flange portion can be with annular sidewall The outer diameter in portion 162 is generally equalized, and the internal diameter of annular flange portion 163 can be greater than the internal diameter of annular side wall portion 162, that is, It says, the thickness of annular flange portion 163 is more thinner than the thickness of annular side wall portion 162.
However, it is desirable to illustrate, the clearance D in the gear ring structure of Fig. 1, Fig. 2 and Fig. 3 embodiment, between two gear ring Refer to the gap between the annular side wall portion 162 of two gear rings.And the gear ring structure in Fig. 8 and Fig. 9 embodiment, two gear ring Between clearance D refer to two gear rings annular flange portion 163 between gap.
According to some embodiments of the present invention, since the first gear ring 13 and/or the second gear ring 23 can further include Annular flange portion 163, due to the presence of annular flange portion 163, compares no annular flange portion when using this gear ring structure Above-mentioned clearance D can be at least partly further decreased for 163 gear ring, and preferably, which can reduce to zero, Such as first gear ring 13 and the second gear ring 23 can use gear ring structure shown in Fig. 8 simultaneously, the annular of the first gear ring 13 at this time The end face of the annular flange portion 163 of flange part 163 and the second gear ring 23 can fit together substantially, so that clearance D is Zero, such installation space A is more closed, and external sundries is more difficult to enter in installation space A and influence moving component, ensure that difference The steady operation of fast device 100.However, it is to be understood that explanation here is only illustrative, it is not to be construed as to this hair A kind of limitation of bright protection scope, those skilled in the art are being understood by setting convex annular after having read above content After edge 163 can further decrease the technical concept that clearance D is even decreased to zero by clearance D, gear ring can be neatly selected Type be combined, such as guarantee wherein at least one gear ring have annular flange portion 163, in this way can be further by gap D, which reduces, is even reduced into zero for clearance D, so that installation space A is more closed.
In addition, the first gear ring 13 is identical with the radial dimension of the second gear ring 23, and the first tooth as optional embodiment Each of circle 13 and the second gear ring 23 may each be integrated molding component.
Differential mechanism 100 according to an embodiment of the present invention has been discussed in detail above, it below will be to power-driven system 1000 Remaining structure is described in detail.
Referring to Fig.1 shown in 0- Figure 20, speed changer 104 may include multiple input shafts 101,102 and power output shaft 103. In some embodiments, as shown in Figure 10-Figure 13, Figure 15-Figure 20, the power output shaft 103 of speed changer 104 can be one, But not limited to this.For example, see the embodiment of Figure 14, power output shaft is also possible to two, i.e. the first power output shaft 103a and Second power output shaft 103b.
As shown in Figure 10-Figure 13, Figure 15-Figure 20, power output shaft 103 is arranged to the power intake with differential mechanism 100 Linkage, i.e. power output shaft 103 are arranged to link with first planet carrier 11 and the second planet carrier 21.
Referring to the embodiment of Figure 10-Figure 12, Figure 17-Figure 20, one of input shaft in multiple input shafts 101,102 is set It is set to and optionally links with power output shaft 103, in other words, as shown in Figure 10-Figure 11, Figure 17-Figure 20, this one of them Input shaft such as the first input shaft 101 (being the second input shaft 102 in Figure 12) can link with power output shaft 103, simultaneously One of input shaft such as the first input shaft 101 can also be disconnected with power output shaft 103.For remaining input shaft, then It is arranged to link with power output shaft 103, i.e., then power output shaft 103 also follows movement or power to the movement of these input shafts Then these input shafts also act the movement of output shaft 103 therewith.And referring to the embodiment of Figure 11, each input shaft 101,102 is all provided with It is set to and optionally links with power output shaft 103.
Referring to the embodiment of Figure 11, Figure 17-Figure 20, third motor generator 401 is arranged to and one of input shaft If the first input shaft 101 links, i.e., the input shaft 101 to link with third motor generator 401 is and power output shaft 103 The input shaft 101 selectively to link.In a further embodiment, 103 overhead of power output shaft set is provided with empty set driven gear 108, empty set driven gear 108 and above-mentioned one of input shaft link, and synchronizer 109 is arranged for synchronous dynamic output Axis 103 and empty set driven gear 108.It is understood that synchronizer 109 synchronizes sky when synchronizer 109 is in engagement state Driven gear 108 and power output shaft 103 are covered, the power in this way from third motor generator 401 can be in synchronizer 109 It is exported from power output shaft 103 to differential mechanism 100 under conjugation, and when synchronizer 109 is in an off state, third is electronic Generator 401 is equivalent to be disconnected with power output shaft 103.Synchronizer 109 serves as the power of third motor generator 401 as a result, Switch, can control the output and disconnection of 401 power of third motor generator.
As an alternative embodiment, synchronizer 109 be arranged on power output shaft 103 and for engage empty set from Moving gear 108.It has the advantages of simple structure and easy realization as a result,.
Referring to shown in Figure 10-Figure 11, Figure 17-Figure 20, for the kind of drive of remaining input shaft and power output shaft 103, It can be realized by gear transmission mode.For example, be fixedly installed fixed driven gear 107 on power output shaft 103, it is fixed from Moving gear 107 and remaining input shaft link, that is, remove above-mentioned Figure 10-Figure 11, the input shaft 101 in Figure 17-Figure 20 embodiment Or the input shaft 102 in Figure 12 embodiment.
For example, see the specific embodiment of Figure 10-Figure 12, fixed driven tooth is fixedly installed on power output shaft 103 simultaneously Wheel 107, and it is set with empty set driven gear 108, and fixed driving gear 105,106 is accordingly fixedly installed on input shaft, Empty set driven gear 108 and fixed driven gear 107 are engaged with corresponding fixed driving gear respectively.Such as, empty set driven gear 108 and fixed driven gear 107 the sum of sum it is identical as the fixed quantity of driving gear.
Referring to the example of Figure 10-Figure 12, the quantity of empty set driven gear 108 and fixed driven gear 107 is one, right Ying Di, the quantity of fixed driving gear are two, and empty set driven gear 108 engages a pair of of tooth of composition with a fixed driving gear Wheel set, fixed driven gear 107 fix driving gear with another and engage composition another pair gear pair, it will be understood that this two pairs The transmission speed ratio of gear pair is different, therefore there are two the transmission gears of different speed ratios for the tool of speed changer 104 in the embodiment, in this way The structure of power-driven system 1000 is relatively easy, compact, and also can satisfy normal vehicle operation and want to transmission speed ratio It asks.
As shown in Figure 10-Figure 20, multiple input shafts include the first input shaft 101 and the second input shaft 102, the first input shaft 101 can be solid shafting, and the second input shaft 102 can be hollow shaft, and the second input shaft 102 is set on the first input shaft 101, If the second input shaft 102 coaxially covers on the first input shaft 101, the axial length of the first input shaft 101 is greater than the second input One end such as right end of the axial length of axis 102, the first input shaft 101 can be internally extended from the second input shaft 102.
Further, as shown in Figure 10-Figure 20, each input shaft can only be fixedly installed a fixed driving gear, That is fixed driving gear includes the first fixed driving gear 106 and the second fixed driving gear 105, first is fixed actively Gear 106 is fixed on the first input shaft 101, and the second fixed driving gear 105 is fixed at the second input shaft 102 On.
Shown in Figure 11, Figure 17-Figure 20, empty set driven gear 108 engage with the first fixed driving gear 106, fixation from Moving gear 107 is engaged with the second fixed driving gear 105, while third motor generator 401 and the first input shaft 101 link, It fixes driving gear 106 by gear structure and first such as third motor generator 401 to link, concretely third dynamoelectric and power generation Machine 401 is driven by the fixed driving gear 106 of gear 402, gear 403 and first, passes through the tooth of reasonable design said gear Transmission speed ratio needed for number can obtain third motor generator 401.
And in the illustration in fig 12, empty set driven gear 108 is engaged with the second fixed driving gear 105, fixed driven tooth Wheel 107 engage with the first fixed driving gear 106, while third motor generator 401 and the linkage of the second input shaft 102, and such as the Three motor generators 401 are linked by gear structure and the second fixed driving gear 105, concretely third motor generator 401 are driven by the fixed driving gear 105 of gear 402, gear 403, gear 404, gear 405 and second, 404 He of middle gear Gear 405 can be fixed on same axis 406, can obtain third dynamoelectric and power generation by the number of teeth of reasonable design said gear Transmission speed ratio needed for machine 401.
Further, as shown in Figure 10-Figure 20, power-driven system 1000 can also include engine 301, engine 301 It is arranged to optionally engage at least one of multiple input shafts, specifically, input shaft is two, and engine Double clutch 204 is provided between 301 and two input shafts.Double clutch 204 includes: the engagement of the first bonding part 201, second Part 202 and third bonding part 203, wherein the first bonding part 201 and the second bonding part 202 can be double clutch 204 two driven discs, third bonding part 203 can be at least one of the shell of double clutch 204, two driven discs It is selectively engageable shell, that is to say, that at least one of the first bonding part 201 and the second bonding part 202 can be with It is selectively engaged third bonding part 203.Certainly, two driven discs can also be all off with shell, i.e. the first joint portion Points 201 and second bonding part 202 be in an off state with third bonding part 203.
Referring to Figure 10-Figure 20, engine 301 is connected with third bonding part 203, and the first input shaft 101 is engaged with first Part 201 is connected, and the second input shaft 102 is connected with the second bonding part 202.In this way, the power that engine 301 generates can pass through Double clutch 204 and selectively export to the first input shaft 101, the second input shaft 102.
In other embodiments, as shown in Figure 15-Figure 16, each input shaft, which is all provided with, to be set to and power output shaft 103 Linkage, in other words, as shown in Figure 15-Figure 16, any one input shaft rotation then power output shaft 103 also follow movement or Then these input shafts also act the rotation of power output shaft 103 therewith.
As shown in Figure 15-Figure 16, third motor generator 401 is arranged to link with one of input shaft.Such as in Figure 15 Example in, third motor generator 401 and the first input shaft 101 link, and concretely third motor generator 401 passes through tooth The fixed driving gear 106 of wheel 402, gear 403 and first is driven.And in the example of Figure 16, third motor generator 401 and The linkage of two input shafts 102, concretely third motor generator 401 passes through gear 402, gear 403, gear 404, gear 405 It is driven with the second fixed driving gear 105, middle gear 404 and gear 405 can be fixed on same axis 406.
In some embodiments, for the kind of drive of input shaft 101,102 and power output shaft 103, it can use Traditional shift gear pair is driven.
For example, as shown in Figure 15-Figure 16, be fixedly installed on power output shaft 103 multiple fixed driven gear 107a, 107b is fixedly installed fixed driving gear on each input shaft (for example, the first fixed driving gear 106 and the second fixed master Moving gear 105), fixed driven gear is engaged with corresponding fixed driving gear.
As shown in Figure 15-Figure 16, fixed driven gear 107a engages a pair of of shift gear of composition with fixed driving gear 105 Pair, fixed driven gear 107b are engaged with fixed driving gear 106 and are constituted another pair gear pair.It is appreciated that two pairs of gears Secondary transmission speed ratio is different, therefore there are two the transmission gear of different speed ratios, such power for the tool of speed changer 104 in the embodiment The structure of drive system 1000 is relatively easy, compact, and also can satisfy requirement of the normal vehicle operation to transmission speed ratio.
The main distinction of some embodiment (i.e. the embodiments shown in Figure 15-Figure 16) and above-mentioned Figure 10-Figure 11 embodiment It is: eliminates synchronizer 109, while empty set driven gear 108 being changed to be directly anchored on power output shaft 103, constitutes Fixed driven gear, rest part is then almost the same with Figure 10-Figure 11 embodiment, therefore no longer repeats one by one here.
In the example in figure 13, i.e., multiple input shafts, single power output shaft 103 embodiment in, described wherein one The fixed motor gear 111a of fixed setting input shaft on a input shaft such as the first input shaft 101,103 overhead of power output shaft is arranged It is equipped with power output shaft empty set motor gear 111b, power output shaft empty set motor gear 111b and the fixed motor gear of input shaft 111a engagement, and third motor generator 401 and the fixed motor gear 111a linkage of input shaft, such as third motor generator 401 pass through the fixed motor gear 111a transmission of gear 402, gear 403 and input shaft.In the embodiment, power-driven system 1000 equally include synchronizer 109, and synchronizer 109 is arranged for synchronous dynamic output shaft 103 and power output shaft empty set electricity Machine gear 111b, such as synchronizer 109 are arranged on power output shaft 103 and for engaging power output shaft empty set motor gear 111b。
That is, the embodiment of Figure 13, compared with the embodiment of above-mentioned Figure 10-Figure 12, one main difference is that Figure 13 is real It applies a motor gear (third motor generator 401) and passes through gear pair (the i.e. fixed motor gear 111a of input shaft being separately provided The output of motor power is realized with power output shaft empty set motor gear 111b), and in the embodiment of Figure 10-Figure 12, motor Gear is the output that motor power is realized by corresponding shift gear pair.
In addition, there are one the main distinctions to be driven gear for Figure 13 embodiment compared with above-mentioned Figure 10-Figure 12 embodiment Position is different.Specifically, multiple fixed driving gears are fixedly installed in the embodiment of Figure 13, on each input shaft, and Figure 10-figure A fixed driving gear is only fixedly installed in 12 embodiment, on each input shaft.Accordingly, in the embodiment of Figure 13 In, due to being fixedly installed multiple fixed driving gears on each input shaft, 103 overhead of power output shaft set is provided with more A empty set driven gear, each empty set driven gear is engaged with corresponding fixed driving gear, and each empty set driven gear Power output shaft 103 can be bonded to by synchronizing for corresponding gear synchronizer.
For example, with reference to the example of Figure 13, the fixed driving gear 2a of second gear, four gears are fixedly installed on the first input shaft 101 Fixed driving gear 4a and six keeps off fixed driving gear 6a, and the fixed driving gear of a gear is fixedly installed on the second input shaft 102 1a, three keep off the fixed fixed driving gear 7a of the gear of driving gear 5a and seven of fixed driving gear 3a, five gears, and power output shaft 103 is empty It is driven that set is provided with a gear empty set driven gear 1b, second gear empty set driven gear 2b, three gear empty set driven gear 3b, four gear empty sets Gear 4b, five gear empty set driven gear 5b, six gear empty set driven gear 6b and seven gear empty set driven gear 7b.
Wherein a gear empty set driven gear 1b keeps off fixed driving gear 1a with one and engages to constitute first gear pair, second gear Empty set driven gear 2b and second gear fixed driving gear 2a engages to constitute second gear pair, three gear empty set driven gear 3b and Three keep off fixed driving gear 3a engagement to constitute three gear gear pairs, and four gear empty set driven gear 4b and four keep off fixed driving gear To constitute four gear gear pairs, five gear empty set driven gear 5b keep off fixed driving gear 5a with five and engage to constitute five for 4a engagement Gear pair is kept off, six gear empty set driven gear 6b keep off fixed driving gear 6a with six and engage to constitute six gear gear pairs, and seven gears are empty Set driven gear 7b keeps off fixed driving gear 7a with seven and engages to constitute seven gear gear pairs.
Further, shown in Figure 13, one or three gear synchronizer 13c are additionally provided on power output shaft 103, five or seven gears synchronize Device 57c, second gear synchronizer 2c and four or six gear synchronizer 46c, one or three gear synchronizer 13c are located at a gear empty set driven gear 1b and three Gear empty set driven gear 3b between and be selectively engageable a gear empty set driven gear 1b or three gear empty set driven gear 3b, five Seven gear synchronizer 57c are located between five gear empty set driven gear 5b and seven gear empty set driven gear 7b and are selectively engageable five The gear of empty set driven gear 5b or seven empty set driven gear 7b is kept off, second gear synchronizer 2c is used to engage second gear empty set driven gear 2b, Four or six gear synchronizer 46c are located between four gear empty set driven gear 4b and six gear empty set driven gear 6b and for selectively connecing Close six gear empty set driven gear 6b and four gear empty set driven gear 4b.
Forward gear of the speed changer 107 configured with seven different speed ratios, the traveling that can preferably meet vehicle are wanted as a result, It asks.
The speed changer 104 in other embodiments is described referring to Figure 14, the speed changer 104 in the embodiment with it is above-mentioned The main quantity for being distinguished as power output shaft 103 of Figure 10-Figure 13, speed changer 100 in Figure 15-Figure 16 embodiment, it is above-mentioned Power output shaft 103 is one in embodiment, and power output shaft 103 is multiple such as two in the embodiment, due to power output The quantity of axis 103 increases, therefore other constructions are also unlike the embodiments above, is described in detail below in conjunction with attached drawing.
Shown in Figure 14, the speed changer 104 in the embodiment includes multiple input shafts 101,102 and multiple power outputs Axis, such as multiple power output shafts include the first power output shaft 103a and the second power output shaft 103b.Wherein, third is electronic Generator 401 can link with one of power output shaft such as 103b in multiple power output shafts, and each power output shaft is set Being set to can power intake by the power output from engine 301 and/or third motor generator 401 to differential mechanism 100 (such as first planet carrier 11 and second planet carrier 21).
Further, as shown in figure 14, speed changer 104 can also include motor power axis 103c, third motor generator 401 Coaxially it is connected with motor power axis 103c, motor power axis 103c is arranged to link with one of power output shaft, such as electricity Mechanomotive force axis 103c and the second power output shaft 103b links.
It is shown in Figure 14 for the linked manner of motor power axis 103c and the second power output shaft 103b, the first electricity Machine gear 103d is fixed on motor power axis 103c, and it is defeated that the second motor gear 103e is fixed at one of power On shaft such as the second power output shaft 103b, first motor gear 103d is engaged with the second motor gear 103e.In short, the reality Apply in example, the second power output shaft 103b and motor power axis 103d be by gear-driven, i.e., by be engaged with each other the One motor gear 103d and the second motor gear 103e realizes power transmission.
For the speed changer 104 in the embodiment, structure of reversing gear is shown in Figure 14, reverse output gear 601 and poor The power intake (such as first planet carrier 11 and second planet carrier 21) of fast device 100 engages, reverse idler gear 604 with reverse gear Output gear 601 engages, 604 empty set of a reverse idler gear power output shaft such as the second power output shaft 103b wherein On, reverse idler gear 604 can be bonded to power output shaft 103b by the synchronous effect of reverse gear synchronizer 604c.Specifically Ground, reverse output gear 601 can be duplicate gear, with gear part 602,603, the power of gear part 602 and differential mechanism 100 Input terminal (such as first planet carrier 11 and second planet carrier 21) engagement, gear part 603 are engaged with reverse idler gear 604, should Duplicate gear can empty set on motor power axis 103c, but not limited to this.
For the transmission path that reverses gear, substantially it is divided into two kinds, one of which is that engine 301 drives, such as engine 301 is logical Double clutch 204, the first input shaft 101 or the second input shaft 102 are crossed by the power output of generation to the second power output shaft 103b, reverse gear synchronizer 604c engage reverse idler gear 604, which passes through after reverse idler gear 604 again from falling Output gear 601 is kept off to export.Another kind is that third motor generator 401 drives, such as third motor generator 401 is by generation Power is exported by first motor gear 103d and the second motor gear 103e to the second power output shaft 102b, reverse gear synchronizer 604c engages reverse idler gear 604, which passes through defeated from reverse output gear 601 after reverse idler gear 604 again Out.Certainly, engine 301 and third motor generator 401 can also export the power that reverses gear simultaneously, and two parts reverse gear power at this time By being exported after reverse idler gear 604 from reverse output gear 601 after being coupled on the second power output shaft 102b.
It is shown in Figure 14, since the power output shaft of speed changer 104 in the embodiment is multiple, and each power output Axis can external output power, therefore each power output shaft is provided with the power that can output power to differential mechanism 100 The export structure of input terminal (such as first planet carrier 11 and second planet carrier 21).Specifically, one of power is defeated Shaft such as the second overhead power output shaft 103b set is provided with power output shaft empty set output gear 605, remaining each power The fixed output gear 606 of power output shaft is fixedly installed on output shaft such as the first power output shaft 103a, power output shaft is empty Cover the fixed output gear 606 of output gear 605 and power output shaft respectively with the power intake of differential mechanism 100 (such as first Planet carrier 11 and the second planet carrier 21) linkage.
For example, being fixedly installed power output shaft in the specific example of Figure 14 on the first power output shaft 103a and fixing Output gear 606, the second overhead power output shaft 103b set are provided with power output shaft empty set output gear 605, and speed changer 104 further include jackshaft 701, and jackshaft 701 and first planet carrier 11 and the second planet carrier 21 are coaxial fixed, thus jackshaft 701, first planet carrier 11 and the second planet carrier 21 can rotate in the same direction, at the same speed.Jackshaft tooth is fixedly installed on jackshaft 701 Wheel 702, countershaft-gear 702 fix output gear 606, power output shaft empty set output gear 605 with power output shaft respectively It is engaged with reverse output gear 601.
Wherein, power output shaft empty set output gear 605 is due to being in same power output shaft with reverse idler gear 604 On 103b, therefore as a preferred embodiment, power output shaft empty set output gear 605 and reverse idler gear 604 Reverse gear synchronizer 604c is shared, such as shown in Figure 14, reverse gear synchronizer 604c engageable power output shaft empty set output to the left Gear 605, move right engageable reverse idler gear 604.Thus, it is possible to save a synchronizer, machinery is not only simplified Structure, and control strategy is also simplified, it reduces costs.
In addition, for the power-driven system 1000 in Figure 14 embodiment, engine 301 by double clutch 204 with First input shaft 101 is connected with the second input shaft 102, this part is identical as remaining embodiment, and which is not described herein again.
In the embodiment, referring to Figure 14, the fixed driving gear 1a of a gear, three gears are fixedly installed on the first input shaft 101 The fixed driving gear of second gear is fixedly installed on the fixed driving gear 5a of the gear of fixation driving gear 3a and five, the second input shaft 102 2a and four or six keeps off fixed driving gear 46a, and the first overhead power output shaft 103a set is provided with second gear empty set driven gear 2b, four It keeps off on empty set driven gear 4b, three gear empty set driven gear 3b and gear an empty set driven gear 1b, the second power output shaft 103b Empty set is provided with the gear of five gear empty set driven gear 5b and six empty set driven gear 6b.
As shown in figure 14, wherein a gear empty set driven gear 1b engages to constitute a gear with the fixed driving gear 1a of a gear Gear pair, second gear empty set driven gear 2b engage to constitute second gear pair, three gear empty sets with the fixed driving gear 2a of second gear Driven gear 3b keeps off fixed driving gear 3a with three and engages to constitute three gear gear pairs, four gear empty set driven gear 4b and four or six Fixed driving gear 46a engagement is kept off to constitute four gear gear pairs, five gear empty set driven gear 5b and five keep off fixed driving gear To constitute five gear gear pairs, six gear empty set driven gear 6b keep off fixed driving gear 46a with four or six and engage to structure for 5a engagement At six gear gear pairs.
Further, as shown in figure 14, it is provided with two or four gear synchronizer 24c on the first power output shaft 103a and one or three gears are same Device 13c is walked, five or six gear synchronizer 56c are provided on the second power output shaft 103b, one or three gear synchronizer 13c settings are empty in a gear Cover driven gear 1b and three gear empty set driven gear 3b between and for engage one gear empty set driven gear 1b or three gear empty sets from Moving gear 3b, two or four gear synchronizer 24c settings are between the gear of second gear empty set driven gear 2b and four empty set driven gear 4b and use In engagement second gear empty set driven gear 2b or four gear empty set driven gear 4b, five or six gear synchronizer 56c setting five gear empty sets from Between the gear of moving gear 5b and six empty set driven gear 6b and for engaging five gear empty set driven gear 5b or six gear empty set driven tooths Take turns 6b.
There are six the forward gear of different speed ratios, the traveling that can preferably meet vehicle is wanted for the speed changer 107 configuration as a result, It asks.
For the speed changer embodiment of single power output shaft 103, which can be directly same with two planet carriers Axis is fixedly connected.Referring to Figure 10-Figure 13, Figure 14-Figure 20 and combine shown in Fig. 1-Fig. 9, power output shaft 103 and first planet carrier 11 and second planet carrier 21 it is coaxially fixed so that speed changer 104 and the coupling part of differential mechanism 100 are more compact, i.e., directly It connects the axis 103 that outputs power coaxially to fix with two planet carriers, to can at least reduce power drive line to a certain extent The volume of system 1000.
In a further embodiment, as shown in Figure 10-Figure 20, power-driven system 1000 further includes the first output section 601 With the second output section 602, the first output section 601 and the first gear ring 13 link, and the second output section 602 and the second gear ring 23 link. Further, the first output section 601 is left half axle gear, and the second output section 602 is right axle shaft gear, while on the first gear ring 13 It is provided with the first external tooth 603, the second external tooth 604 is provided on the second gear ring 23, the first external tooth 603 is nibbled with left half axle gear 601 It closes, the second external tooth 604 is engaged with right axle shaft gear 602, and the power thus through differential mechanism 100 can finally pass through left half axle gear 603 and right axle shaft gear 604 output to the left and right sides wheel.
Wherein, the first motor generator 501 is arranged to link with the first output section 601, and the second motor generator 502 is set Being set to can link with the second output section 602, may be provided with gear 503, gear on such as motor shaft of the first motor generator 501 503 engage with left half axle gear 601, while gear 504 is provided on the motor shaft of the second motor generator 502, gear 504 with Right axle shaft gear 602 engages.
Referring to shown in Figure 10-Figure 20, the first motor generator 501 and the second motor generator 502 are left about differential mechanism 100 It is right symmetrical, the center of gravity of power-driven system 100 can be made in center or closer to center in this way.
The embodiment of 1- Figure 22 referring to fig. 2, in the power-driven system 1000 and Figure 10-Figure 20 embodiment in the embodiment The main distinction of power-driven system 1000 be: the quantity of input shaft.In some embodiments, input shaft includes the One input shaft 101, the second input shaft 102 and third input shaft 1003, third input shaft 1003 can be hollow shaft and be set in On second input shaft 102, the second input shaft 102 is also possible to hollow shaft and is set on the first input shaft 101, three input shafts It can be coaxially arranged.Lead between engine 301 and the first input shaft 101, the second input shaft 102 and third input shaft 1003 Cross three clutches 205 be connected, specifically, three clutches 205 have the first driven disc 206, the second driven disc 207, third from Moving plate 208 and shell 209, shell 209 optionally with the first driven disc 206, the second driven disc 207, third driven disc 208 At least one of engagement, the first input shaft 101 connect with the first driven disc 206, the second input shaft 102 and the second driven disc 207 connections, third input shaft 1003 are connect with third driven disc 208, and engine 301 is connect with shell 209.The embodiment of Figure 20 In, the first driven disc 206, the second driven disc 207, third driven disc 208 are axially distributed, in the embodiment of Figure 21, first from Moving plate 206, the second driven disc 207, third driven disc 208 are radially distributed.
The typical condition of power-driven system 1000 according to an embodiment of the present invention is briefly described below with reference to Figure 11.
Low speed pure electric vehicle: double clutch 204 is all off, and synchronizer 109 disconnects, the first motor generator 501 and second Motor generator 502 is worked external direct output power in a manner of motor.Power transfer path is shorter under the mode, is driven energy Amount loss is small, is suitble to urban congestion road conditions.
High speed pure electric vehicle: double clutch 204 is all off, and synchronizer 109 is in engagement state, the first motor generator 501, the second motor generator 502 and the whole external output powers that work of third motor generator 401.
Low engine speed gear: the first bonding part 201 is engaged with third bonding part 203, the second bonding part 202 and the Three bonding parts 203 disconnect, and synchronizer 109 is in engagement state, and the power that engine 301 generates at this time passes through the first input shaft 101, power is distributed to the driving wheel of two sides by differential mechanism 100 to differential mechanism 100 by output after power output shaft 103.
High engine speeds gear: the second bonding part 202 is engaged with third bonding part 203, the first bonding part 201 and the Three bonding parts 203 disconnect, and synchronizer 109 is in an off state, and the power that engine 301 generates at this time passes through the second input shaft 102, power is distributed to the driving wheel of two sides by differential mechanism 100 to differential mechanism 100 by output after power output shaft 103.
Power generation in parking: the first bonding part 201 is engaged with third bonding part 203, and the second bonding part 202 connects with third It closes part 203 to disconnect, synchronizer 109 is in an off state, and the power that engine 301 generates at this time passes through the first input shaft 101 Output drives third motor generator 401 to generate electricity as motor, realizes power generation in parking to third motor generator 401 Function.
Brake energy recovery: synchronizer 109 can be at off-state, and the first motor generator 501 and second is electronic at this time Generator 502 recycles braking energy.Or synchronizer 109 is in engagement state, the first motor generator 501, second is electric at this time Dynamic generator 502 and third motor generator 401 all recycle braking energy.
Driving power generation: engine 301 can by the engagements of the different engagement states and synchronizer 109 of double clutch 204/ Off-state, and selectivity drives the first motor generator 501 and the second motor generator 502 to generate electricity or drive third electricity Dynamic generator 401 generates electricity, and can also drive three electric power generations simultaneously certainly, and at the same time, also externally output is dynamic for engine 301 Power drives vehicle driving.
Increase journey mode: the first bonding part 201 engages third bonding part 203, and the second bonding part 202 is engaged with third Part 203 disconnects, and 301 output power of engine drives third motor generator 401 to generate electricity, while the first motor generator 501 Motor output power drive vehicle driving is used as with the second motor generator 502.
The main distinction of Figure 10 embodiment and Figure 11 embodiment is to eliminate third motor generator 401, for remaining Construction portion is then consistent, and which is not described herein again.
Figure 12 embodiment and the main distinction of Figure 11 embodiment be, the third motor generator 401 in Figure 12 embodiment It links, remaining construction portion is then consistent, which is not described herein again with the second input shaft 102.
One main distinction of Figure 13 embodiment and Figure 11 embodiment is the transmission gear of Figure 13 embodiment more than Figure 11 Embodiment, these gears are controlled by corresponding gear synchronizer and are engaged, this is all to be easy reason for those of ordinary skill in the art Solution, therefore no longer repeat one by one here.
One main distinction of Figure 14 embodiment and Figure 11 embodiment is that the power output shaft of the embodiment of Figure 14 is more It is a, and multiple transmission gears are correspondingly arranged on, these gears are controlled by corresponding gear synchronizer and are engaged, this is general for this field What logical technical staff will be appreciated that, therefore no longer repeat one by one here.
The embodiment of Figure 15-Figure 16 and a main distinction of Figure 11 embodiment are to eliminate synchronizer 109, simultaneously will Empty set driven gear 108 is directly anchored on power output shaft 103, therefore the biography of Figure 15-Figure 16 embodiment and Figure 11 embodiment Condition of starting building is similar but there are some difference, such as the embodiment of Figure 15-Figure 16 cannot achieve power generation in parking operating condition etc., these for It should all will be appreciated that for those skilled in the art, therefore no longer repeat one by one here.
For the embodiment of Figure 17-Figure 20, compared with Figure 11 embodiment, difference is to increase rear-guard differential lock.
It 7- Figure 20 and combines shown in Fig. 1-Fig. 9 referring to Fig.1, the first gear ring 13 links with the near front wheel 910a, such as the first gear ring 13 are linked by the first external tooth 603 and left half axle gear 601 and the near front wheel 910a, and the second gear ring 23 and off-front wheel 910b links, As the second gear ring 23 is linked by the second external tooth 604 and right axle shaft gear 602 and off-front wheel 910b.4th motor generator 901 It is linked by gear structure and left rear wheel 910c, such as the 4th motor generator 901 passes through gear W1, W2, W3, W4 and left rear wheel 910c linkage, gear W1 with the 4th motor generator 901 is coaxial is connected, gear W1 is engaged with gear W2, gear W2 and gear W3 Coaxial to be connected, gear W3 is engaged with gear W4, and gear W4 can be fixedly installed on left half axle 904, is provided with a left side on left half axle 904 Rear-wheel 910c.Similarly, the 5th motor generator 902 is linked by gear structure and off hind wheel 910d, such as the 5th dynamoelectric and power generation Machine 902 is linked by gear X1, X2, X3, X4 and off hind wheel 910d, gear X1 with the 5th motor generator 902 is coaxial is connected, tooth Wheel X1 is engaged with gear X2, and gear X2 is coaxially connected with gear X3, and gear X3 is engaged with gear X4, and gear X4 can be fixedly installed on On right axle shaft 905, off hind wheel 910d is provided on right axle shaft 905.
In the example of Figure 17, anti-skidding synchronizer 903 is arranged for synchromesh gear W4 and gear X4, such as anti-skidding synchronization Device 903 is arranged on gear W4 and is used for engage gear X4.In the example of Figure 18, anti-skidding synchronizer 903 is arranged for together Gear W1 and gear X1 is walked, such as anti-skidding synchronizer 903 is arranged on gear W1 and is used for engage gear X1.In the example of Figure 19 In, anti-skidding synchronizer 903 is arranged for synchromesh gear W2 and gear X2, such as anti-skidding synchronizer 903 is arranged on gear W2 And it is used for engage gear X2.
In the example of fig. 20, anti-skidding synchronizer 903 is arranged for synchronous left half axle 904 and right axle shaft 905, such as anti-skidding Synchronizer 903 is arranged on left half axle 904 and for engaging right axle shaft 905, the 4th motor generator 901 and the in the embodiment Five motor generators 902 are wheel motor.
To sum up, anti-skidding synchronizer 903 is arranged to optionally synchronize left rear wheel 910c and off hind wheel 910d, in other words, When anti-skidding synchronizer 903 is in engagement state, left rear wheel 910c and off hind wheel 910d revolve synchronous rotary that is, at the same speed, in the same direction Turn, left rear wheel 910c and off hind wheel 910d will not differential rotation at this time.And when anti-skidding synchronizer 903 is in an off state, the Four motor generators 901 can be operated alone left rear wheel 910c, and the 5th motor generator 902 can be operated alone off hind wheel 910d, and two A rear-wheel is mutually indepedent, non-interference, to realize the differential rotating function of wheel.
In addition, for technical solution described in the various embodiments described above and/or technical characteristic, do not conflict with each other, not phase In mutual contradictory situation, those skilled in the art can be by the technical solution and/or technical characteristic progress phase in above-described embodiment Mutually combination, the technical solution after combination can be the superposition of two or more technical solutions, two or more technologies The superposition of feature or two or more technical solutions are superimposed with technical characteristic, and thus, it is possible to realize each technical solution And/or the interaction and support of technical characteristic each other functionally, and the scheme after combination is imitated with more superior technology Fruit.
For example, those skilled in the art can be by the first planetary gear 12 and the partly overlapping scheme of the second planetary gear 22 and first Planet carrier 11 and the second planet carrier 21 are that the scheme of plate structure combines, and can effectively reduce the axial ruler of differential mechanism 100 in this way It is very little, to keep the volume of differential mechanism 100 smaller.
For another example, those skilled in the art can be by the first planetary gear 12 and the partly overlapping scheme of the second planetary gear 22 and planet Wheel and planet carrier are accommodated in the combination of the scheme in installation space, not only can effectively reduce the axial ruler of differential mechanism 100 It is very little, and planetary gear and planet carrier can also be made to be hidden in installation space and avoid leaking cruelly being damaged outside, so that increasing makes With the service life, maintenance cost is reduced.
For another example, those skilled in the art can be by the revolution axis of the revolution axis and the second planetary gear 22 of the first planetary gear 12 The scheme of coincidence is combined with the revolution-radius of the first planetary gear 12 with the identical scheme of revolution-radius of the second planetary gear 22, in this way So that the structure of differential mechanism 100 is more compact, occupancy volume is smaller, is more convenient for arranging.
However, it is to be understood that above-mentioned illustrating is only illustrative, it is special for technical solution and/or technology The combination of sign, those skilled in the art can be freely combined in the absence of conflict, and the scheme after combination has More superior technical effect, the present invention have only made above-mentioned multiple exemplary simple declarations, no longer exhaustive one by one herein.
Further it will be understood that the technical solution after said combination is equally fallen under the scope of the present invention.
Generally speaking, differential mechanism 100 according to an embodiment of the present invention, can effectively save space, and reduce weight, tool For body, for this planet gear type differential mechanism 100 compares traditional bevel gear differential, weight can be reduced about 30%, while axial dimension about reduces 70%, can not only reduce the frictional force of bearing, and can be realized left and right wheels Torque distribution is distributed the load of differential mechanism 100 more reasonable, and 100 rigidity of differential mechanism is more preferable, additionally due to using Cylinder Gear Wheel, transmission efficiency is also increased, such as traditional Bevel Gear Drive efficiency of 6 class precisions and 7 class precisions is about 0.97 ~0.98, and the column gear transmission efficiency of 6 class precisions and 7 class precisions is about 0.98~0.99, furthermore uses roller gear, also The operating noise of differential mechanism 100 is reduced, while reducing calorific value, substantially increases the service life of differential mechanism 100.In short, Differential mechanism 100 according to an embodiment of the present invention have lightweight, small size, at low cost, transmission efficiency is high, low noise, fever it is small, Many advantages, such as service life is high.
Simultaneously as differential mechanism 100 according to an embodiment of the present invention can save sun gear, and saving sun gear can have It has the following advantages:
It is analyzed from mechanics, cancel sun gear but gear ring is utilized to realize differential, because the number of teeth of gear ring compares sun gear What be can be set is more, while pitch circle is larger (pitch circle refers to a pair of circle tangent at node when gear engaged transmission), from And can be more balanced distributed load and bear torque, this is good to the raising in the service life of differential mechanism 100.Do not have simultaneously Sun gear can preferably realize the lubrication and cooling of differential mechanism 100, that is to say, that due to eliminating sun gear, planet Wheel the inside can form cavity, and it is to belong to the relationship of internal messing (sun gear belongs to outside with planetary gear that gear ring engage with planetary gear Engagement), lubricating oil can be stored in gear ring, thus cooling and lubricant effect can greatly improve.In addition, due to cancelling sun gear, Reduce components, reduce the quality and cost of differential mechanism 100, differential mechanism 100 is made to become more miniaturization, lightweight.
And for the power-driven system 1000 with differential mechanism 100 according to an embodiment of the present invention, mainly exist Spatially and in driving method there is obvious advantage, by taking space advantage as an example, the power-driven system 1000 is especially suitable For new energy vehicle, since the power assembly of new energy vehicle is typically located in enging cabin, power assembly not only has Speed changer, also has at least one motor at engine simultaneously, since enging cabin space is limited, using according to the present invention The compact differential mechanism 100 of embodiment can spatially obtain advantage, easily facilitate arrangement.For another example, in a driving manner For advantage, since the axial dimension of differential mechanism 100 according to an embodiment of the present invention greatly reduces, the more preferable cloth of axial space It sets, and differential mechanism 100 tool can be better achieved as power output end there are two gear ring and be connected by power with two motors (external tooth by gear ring as mentioned above connects motor), and this is difficult to realize on traditional circular cone differential mechanism.
Vehicle 10000 according to an embodiment of the present invention is briefly described below, as shown in figure 23, which includes upper The power-driven system 1000 in embodiment is stated, which can be used for forerunner, naturally it is also possible to after being used for It drives, the present invention is not particularly limited this.It should be understood that other constructions of vehicle 10000 according to an embodiment of the present invention Such as braking system, driving system, steering system etc. have been the prior art, and are well known to those skilled in the art, therefore Here it no longer repeats one by one.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office What can be combined in any suitable manner in one or more embodiment or examples.In addition, those skilled in the art can say this Different embodiments or examples described in bright book are engaged and are combined.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned Embodiment is changed, modifies, replacement and variant.

Claims (25)

1. a kind of power-driven system, the power-driven system includes differential mechanism, engine and speed changer, the speed changer point It is not connected with the engine and the differential mechanism, and the engine can be by the power of generation by exporting after the speed changer To the power intake of the differential mechanism, it is characterised in that:
The differential mechanism includes:
First planet carrier, the first planetary gear and the first gear ring, first planetary gear is arranged in the first planet carrier, described First planetary gear is engaged with first gear ring；
Second planet carrier, the second planetary gear and the second gear ring, second planetary gear is arranged on second planet carrier, described Second planetary gear is engaged with second gear ring and second planetary gear is also engaged with first planetary gear；
Wherein, first gear ring and second gear ring constitute two power output ends of the differential mechanism, the first row Carrier and second planet carrier constitute the power intake of the differential mechanism；The first planet carrier and second planet carrier Be spaced apart, first planetary gear and second planetary gear with the form directly engaged be configured in the first planet carrier and Between second planet carrier, so that the first planet carrier and second planet carrier are located at first planet The opposite exterior lateral sides of wheel and second planetary gear；
The power-driven system further include:
First output section and the second output section, first output section and first gear ring link, second output section with The second gear ring linkage；
First motor generator and the second motor generator, first motor generator and first output section are linked, institute It states the second motor generator and second output section is linked.
2. power-driven system according to claim 1, which is characterized in that first planetary gear and second planet Wheel partly overlaps in the axial direction.
3. power-driven system according to claim 2, which is characterized in that first planetary gear includes: the first teeth portion With the second teeth portion, second planetary gear includes: third teeth portion and the 4th teeth portion, and first teeth portion is nibbled with first gear ring It closes, second teeth portion corresponding overlapping and engagement cooperation, the 4th teeth portion and institute in the axial direction with the third teeth portion State the engagement of the second gear ring.
4. power-driven system according to claim 1, which is characterized in that first planetary gear and the second planetary gear are equal For roller gear.
5. power-driven system according to claim 1, which is characterized in that in first gear ring and second gear ring Each include:
The annular side wall portion in body panels portion and the outer periphery that the body panels portion is set, the inner wall of the annular side wall portion It is provided with multiple teeth on face, cavity is limited between the body panels portion and the annular side wall portion, first gear ring The cavity of cavity and second gear ring is toward each other to constitute installation space, the first planet carrier and first planetary gear And second planet carrier and second planetary gear are accommodated in the installation space.
6. power-driven system according to claim 1, which is characterized in that first gear ring and second gear ring exist Gap is provided in axial direction.
7. power-driven system according to claim 1, which is characterized in that each first planetary gear is configured with one First planet wheel spindle, two ends of first planet wheel spindle respectively with the first planet carrier and the second planet carrier phase Even, each second planetary gear be configured with second planet wheel spindle, two ends of second planet wheel spindle respectively with The first planet carrier is connected with second planet carrier.
8. power-driven system according to claim 1, which is characterized in that the revolution axis of first planetary gear and institute The revolution axis for stating the second planetary gear is overlapped, the revolution-radius of the revolution-radius of first planetary gear and second planetary gear It is identical.
9. power-driven system according to claim 1, which is characterized in that the speed changer includes power output shaft and more A input shaft；
One of input shaft in the multiple input shaft is arranged to optionally link with the power output shaft, described Power output shaft is arranged to also link with the power intake of the differential mechanism.
10. power-driven system according to claim 9, which is characterized in that the power output shaft overhead set is provided with Empty set driven gear, the empty set driven gear and one of input shaft link, and the power-driven system further includes Synchronizer, the synchronizer are arranged for synchronizing the power output shaft and the empty set driven gear.
11. power-driven system according to claim 9, which is characterized in that the power output shaft overhead set is provided with Empty set driven gear and it is fixedly installed fixed driven gear, the power-driven system further includes synchronizer: the synchronization Device is arranged for synchronizing the power output shaft and the empty set driven gear；
Fixed driving gear, the empty set driven gear and the fixed driven gear are fixedly installed on each input shaft It is engaged respectively with corresponding fixed driving gear.
12. power-driven system according to claim 9, which is characterized in that be fixedly installed on each input shaft Multiple fixed driving gears, the power output shaft overhead set are provided with multiple empty set driven gears, the empty set driven gear It is engaged with corresponding fixed driving gear, each empty set driven gear can be connect by corresponding synchronizing for gear synchronizer It is bonded to the power output shaft.
13. power-driven system according to claim 1, which is characterized in that the speed changer include power output shaft and Multiple input shafts；
Each input shaft be arranged to the power output shaft link, the power output shaft be arranged to also with the differential The power intake of device links.
14. power-driven system according to claim 13, which is characterized in that be fixedly installed on the power output shaft Multiple fixed driven gears, are fixedly installed fixed driving gear on each input shaft, the fixed driven gear with it is right The fixed driving gear engagement answered.
15. power-driven system according to claim 1, which is characterized in that the speed changer include the first input shaft and Second input shaft, second input axle sleeve are located on first input shaft, and the power-driven system further includes engine, It is connected between the engine and first input shaft, second input shaft by double clutch.
16. power-driven system according to claim 9, which is characterized in that the power output shaft and the first row Carrier, second planet carrier are coaxially fixed.
17. power-driven system according to claim 1, which is characterized in that first output section is left half axle gear, Second output section is right axle shaft gear；And
Be provided with the first external tooth on first gear ring, be provided with the second external tooth on second gear ring, first external tooth with The left half axle gear engagement, second external tooth are engaged with the right axle shaft gear.
18. power-driven system according to claim 1, which is characterized in that the speed changer includes:
Multiple input shafts and multiple power output shafts, each power output shaft are arranged to move from the engine Power is exported to the power intake of the differential mechanism.
19. power-driven system according to claim 18, which is characterized in that the speed changer further include:
The power intake of reverse output gear and reverse idler gear, the reverse output gear and the differential mechanism links, The reverse idler gear is engaged with the reverse output gear, and the reverse idler gear empty set is in the multiple power output It can be bonded in axis one of power output shaft and by the synchronous effect of reverse gear synchronizer that described one of them is dynamic Power output shaft.
20. power-driven system according to claim 19, which is characterized in that one of power output shaft overhead Set is provided with power output shaft empty set output gear, and the power output shaft empty set output gear and the reverse idler gear are total With the reverse gear synchronizer, the fixed output gear of power output shaft is fixedly installed on remaining each power output shaft, it is described The fixed output gear of power output shaft and the power output shaft empty set output gear are inputted with the power of the differential mechanism respectively End linkage.
21. the power-driven system stated according to claim 20, which is characterized in that further include:
Jackshaft, the jackshaft are coaxially fixed with the first planet carrier and second planet carrier, solid on the jackshaft Surely it is provided with countershaft-gear, the countershaft-gear is defeated with the fixed output gear of the power output shaft, the power respectively Shaft empty set output gear and reverse output gear engagement.
22. power-driven system according to claim 1, which is characterized in that further include: third motor generator, it is described Third motor generator is connected with the speed changer, and the power of generation can be passed through the speed changer by the third motor generator It exports to the power intake of the differential mechanism.
23. power-driven system according to claim 1, which is characterized in that the speed changer includes the first input shaft, the Two input shafts and third input shaft, the third input axle sleeve are located on second input shaft, and second input shaft is arranged On first input shaft, the engine and first input shaft, second input shaft and the third input shaft Between by three clutches be connected.
24. power-driven system according to claim 1, which is characterized in that first gear ring and the near front wheel link, institute It states the second gear ring and off-front wheel links；
The power-driven system further include:
4th motor generator and the 5th motor generator, the 4th motor generator and left rear wheel link, the 5th electricity Dynamic generator and off hind wheel link；And
Anti-skidding synchronizer, the anti-skidding synchronizer are arranged to optionally synchronize the left rear wheel and off hind wheel, so that The left rear wheel and the off hind wheel synchronous rotary.
25. a kind of vehicle, which is characterized in that including power-driven system described according to claim 1 any one of -24.
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