CN106553535A - Power-driven system and the vehicle with which - Google Patents

Power-driven system and the vehicle with which Download PDF

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Publication number
CN106553535A
CN106553535A CN201510626385.7A CN201510626385A CN106553535A CN 106553535 A CN106553535 A CN 106553535A CN 201510626385 A CN201510626385 A CN 201510626385A CN 106553535 A CN106553535 A CN 106553535A
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China
Prior art keywords
gear
power
driven
wheel
power output
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CN201510626385.7A
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CN106553535B (en
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杨冬生
廉玉波
张金涛
罗红斌
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BYD Co Ltd
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BYD Co Ltd
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Abstract

The invention discloses a kind of power-driven system and vehicle.The power-driven system includes：Differential mechanism, differential mechanism is made up of input unit, the first and second planet carriers, the first and second planetary gears, the first and second gear rings, first and second planetary gears are connected with the first and second planet carriers respectively, first and second planetary gears are engaged with the first and second gear rings respectively, second planetary gear is also engaged with the first row star-wheel, input unit, the first row carrier and the second planet carrier coaxial linkage；Variator and electromotor, variator are connected with electromotor and differential mechanism respectively, and the power of generation can be exported to input unit after variator by electromotor；First motor generator and the second motor generator, the first motor generator and the linkage of the first gear ring and the second motor generator and the linkage of the second gear ring.The differential mechanism of the power-driven system of the present invention realizes differential function using planet differential principle, compact conformation, simple.

Description

Power-driven system and the vehicle with which
Technical field
The present invention relates to a kind of power-driven system for vehicle, the vehicle with the power-driven system.
Background technology
In a kind of differential art known for inventor, differential mechanism includes that the driven gear of main reducing gear is (main Subtract driven gear), planetary gear, centre wheel etc., planetary gear is arranged on driven tooth by square shaft, axle sleeve On the subplate of wheel, and engage with centre wheel, realize which rotates and locomotive function with secondary and plane moving sets are rotated, Centre wheel passes through angular alignment pin and cylindrical pair or spline is connected with left and right two-semiaxle, reaches the mesh of output torque 's.This differential mechanism eliminates the components such as original differential mechanism or so housing, planetary gear shaft, uses square shaft instead Directly planetary gear is arranged on the subplate of driven gear of main reducing gear with axle sleeve, effectively reduces differential The number of parts of device, simplifies structure, alleviates weight.
But, this differential mechanism make use of symmetrical expression bevel gear structure to realize differential between wheel, just for tradition Symmetrical expression bevel differential part innovation, can not really solve this differential design axial dimension Excessive, housing and bevel gear quality be big and the shortcoming of reliability relative deviation.
The content of the invention
It is contemplated that at least solving one of above-mentioned technical problem of the prior art to a certain extent.
For this purpose, the present invention proposes a kind of power-driven system, the differential mechanism of the power-driven system is using row Star differential principle realizes differential function, compact conformation, simple.
The invention allows for a kind of vehicle with the power drive system.
Power-driven system according to embodiments of the present invention, including：Differential mechanism, the differential mechanism is by the first row Carrier, the first row star-wheel, the first gear ring, the second planet carrier, the second planetary gear, the second gear ring and input unit Composition, the first row star-wheel is connected with the first row carrier, the first row star-wheel and first tooth Circle engagement, second planetary gear are connected with second planet carrier, second planetary gear and described second Gear ring is engaged and second planetary gear is also engaged with the first row star-wheel, wherein first gear ring and institute State two clutch ends that the second gear ring constitutes the differential mechanism, the input unit, the first row carrier And the input unit coaxially arranged with second planet carrier respectively with the first row carrier and described second Planet carrier links；Variator and electromotor, the variator respectively with the electromotor and the differential mechanism phase Connect, and the electromotor can be exported the power of generation to the input unit after the variator；And First motor generator and the second motor generator, first motor generator are linked with first gear ring And second motor generator is linked with second gear ring.
The differential mechanism of power-driven system according to embodiments of the present invention realizes differential using planet differential principle Function is compact conformation, simple.
In addition, power-driven system according to embodiments of the present invention can also have following additional technical feature：
Some embodiments of the invention, the variator include power output shaft and multiple input shafts；
One of input shaft in the plurality of input shaft be arranged to optionally with the power output Axle links, and the power output shaft is arranged to also link with the input unit.
Some embodiments of the invention, the power output shaft overhead set are provided with empty set driven gear, The empty set driven gear is linked with one of input shaft, and the power-driven system also includes synchronous Device, the lock unit are arranged for the synchronous power output shaft and the empty set driven gear.
Some embodiments of the invention, power output shaft overhead set be provided with empty set driven gear with And fixed driven gear is fixedly installed, the power-driven system also includes lock unit：The lock unit sets It is set to for the synchronous power output shaft and the empty set driven gear；
It is fixedly installed fixed driving gear on each described input shaft, the empty set driven gear and described solid Determine driven gear to engage with corresponding fixed driving gear respectively.
Some embodiments of the invention, are fixedly installed multiple fixed driving tooths on each described input shaft Wheel, power output shaft overhead set are provided with multiple empty set driven gears, the empty set driven gear with it is right The fixed driving gear engagement answered, each described empty set driven gear can pass through the same of corresponding gear lock unit Walk and be bonded to the power output shaft.
Some embodiments of the invention, the variator include power output shaft and multiple input shafts；
Each described input shaft is arranged to link with the power output shaft, and the power output shaft is arranged to also Link with the input unit.
Some embodiments of the invention, are fixedly installed multiple fixed driven tooths on the power output shaft Wheel, is fixedly installed fixed driving gear on each described input shaft, the fixed driven gear with it is corresponding The fixed driving gear engagement.
Some embodiments of the invention, the variator include the first input shaft and the second input shaft, institute State the second input shaft to be set on first input shaft, the power-driven system also includes electromotor, institute State and be connected by double clutch between electromotor and first input shaft, second input shaft.
Some embodiments of the invention, are provided with power output shaft output gear on the power output shaft Wheel, the power output shaft output gear and the input unit engaged transmission.
Some embodiments of the invention, the power output shaft output gear are constituted with the input unit and are led Decelerator, wherein the power output shaft output gear is configured to main reducing gear driving gear, the input unit It is configured to main reducing gear driven gear.
Some embodiments of the invention, are provided with the first external tooth, institute on the outer peripheral face of first gear ring The second external tooth, first motor generator and first external tooth are provided with the outer peripheral face for stating the second gear ring Linkage, second motor generator are linked with second external tooth.
Some embodiments of the invention, the variator include：
Multiple input shafts and multiple power output shafts, each described power output shaft is arranged to can be by from described The power output of electromotor is to the input unit.
Some embodiments of the invention, the variator also include：
Reverse output gear and reverse idler gear, the reverse output gear are engaged with the input unit, institute State reverse idler gear to engage with the reverse output gear, the reverse output gear empty set is the plurality of Can be connect on one of power output shaft in power output shaft and by the synchronization of reverse gear synchronizer It is bonded to one of power output shaft.
Some embodiments of the invention, it is defeated that one of power output shaft overhead set is provided with power Shaft empty set output gear, the power output shaft empty set output gear share institute with the reverse idler gear Reverse gear synchronizer is stated, power output shaft is fixedly installed on remaining each power output shaft and is fixed output gear Wheel, the power output shaft fix output gear and the power output shaft empty set output gear respectively with it is described Input unit is engaged.
Some embodiments of the invention, power-driven system also include：3rd motor generator, it is described 3rd motor generator is connected with the variator, and the power of generation can be passed through by the 3rd motor generator The variator is exported to the input unit.
Some embodiments of the invention, first motor generator and second dynamoelectric and power generation office In the symmetrical distribution of the differential mechanism.
Some embodiments of the invention, the first row star-wheel and second planetary gear portion in the axial direction Divide and overlap.
Some embodiments of the invention, the first row star-wheel include：First teeth portion and the second teeth portion, Second planetary gear includes：3rd teeth portion and the 4th teeth portion, first teeth portion are nibbled with first gear ring Close, second teeth portion and the 3rd teeth portion corresponding overlap and engage cooperation on the axial direction, described the Four teeth portion are engaged with second gear ring.
Some embodiments of the invention, the first row star-wheel and the second planetary gear are roller gear.
Some embodiments of the invention, first gear ring and second gear ring be symmetrical structure, institute Each stated in the first gear ring and second gear ring includes：
Body panels portion and be arranged on the body panels portion periphery edge annular side wall portion, the annular side Multiple teeth are provided with the internal face of wall portion, are limited between the body panels portion and the annular side wall portion The cavity of cavity, the cavity of first gear ring and second gear ring toward each other to constitute installing space, The first row carrier and the first row star-wheel and second planet carrier and second planetary gear receipts It is contained in the installing space.
Some embodiments of the invention, the input unit are configured to input end gear, the input end tooth Wheel construction is for annular and is set in first gear ring and the second gear ring outer surface.
Some embodiments of the invention, between being provided between first gear ring and second gear ring Gap, the input end gear surround and cover the gap.
Some embodiments of the invention, power-driven system also include：Intermediate connection structure, it is described in Between attachment structure for the first row carrier, second planet carrier are connected to the input unit, it is described Intermediate connection structure includes：First connecting bracket and the second connecting bracket, first connecting bracket are used to connect The first row carrier and the input unit are connect, second connecting bracket is used to connect second planet carrier With the input unit, wherein each in first connecting bracket and second connecting bracket is wrapped Include：
Central body portion and extension arm, the extension arm are multiple and are arranged on the central body portion On outer peripheral face, arm is centered on the central body portion and radially distributes for the plurality of extension, wherein The arm that extends is for being connected with the input unit.
Some embodiments of the invention, each described the first row star-wheel are configured with a first row star-wheel Axle, two ends of the first planet wheel shaft respectively with the first row carrier and the second planet carrier phase Even, each described second planetary gear is configured with second planet wheel spindle, two of second planet wheel spindle End is connected with the first row carrier and second planet carrier respectively.
Some embodiments of the invention, the revolution-radius of the first row star-wheel and second planetary gear Revolution-radius it is identical.
Some embodiments of the invention, the variator include the first input shaft, the second input shaft and Three input shafts, the 3rd input shaft are set on second input shaft, and second input shaft is set in On first input shaft, the electromotor and first input shaft, second input shaft and described It is connected by three clutches between three input shafts.
Some embodiments of the invention, first gear ring and the near front wheel link, second gear ring with Off-front wheel links；
The power-driven system also includes：
4th motor generator and the 5th motor generator, the 4th motor generator are linked with left rear wheel, 5th motor generator is linked with off hind wheel；And
Anti-skidding lock unit, after the anti-skidding lock unit is arranged to the optionally synchronous left rear wheel and the right side Wheel, so that the left rear wheel and the off hind wheel synchronous rotary.
Vehicle according to embodiments of the present invention, including the power-driven system of above-described embodiment.
Description of the drawings
Fig. 1 is the explosive view of differential mechanism according to embodiments of the present invention；
Fig. 2 is the explosive view at another visual angle of differential mechanism according to embodiments of the present invention；
Fig. 3 is the axonometric chart of differential mechanism according to embodiments of the present invention；
Fig. 4 is the plan view sketch of differential mechanism according to embodiments of the present invention；
Fig. 5 is the axonometric chart of differential mechanism according to embodiments of the present invention, the second planet carrier and not shown in which Two gear rings etc.；
Fig. 6 is the mesh schematic representation of the first row star-wheel and the second planetary gear；
Fig. 7 is the theory of engagement sketch of the first row star-wheel and the second planetary gear；
Fig. 8 is the axonometric chart of the first gear ring according to embodiments of the present invention or the second gear ring；
Fig. 9 is the axonometric chart of the first gear ring in accordance with another embodiment of the present invention or the second gear ring；
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 according to further embodiment of the present invention；
Figure 13 is the schematic diagram of the power-driven system according to further embodiment of the present invention；
Figure 14 is the schematic diagram of the power-driven system according to further embodiment of the present invention；
Figure 15 is the schematic diagram of the power-driven system according to further embodiment of the present invention；
Figure 16 is the schematic diagram of the power-driven system according to further embodiment of the present invention；
Figure 17 is the schematic diagram of the power-driven system according to further embodiment of the present invention；
Figure 18 is the schematic diagram of the power-driven system according to further embodiment of the present invention；
Figure 19 is the schematic diagram of the power-driven system according to further embodiment of the present invention；
Figure 20 is the schematic diagram of the power-driven system according to further embodiment of the present invention；
Figure 21 is the schematic diagram of the power-driven system according to further embodiment of the present invention；
Figure 22 is the schematic diagram of the power-driven system according to further embodiment of the present invention；
Figure 23 is the schematic diagram of vehicle according to embodiments of the present invention.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein certainly Begin to same or similar label eventually to represent same or similar element or the unit with same or like function Part.It is exemplary below with reference to the embodiment of Description of Drawings, it is intended to for explaining the present invention, and not It is understood that as limitation of the present invention.
In describing the invention, it is to be understood that term " " center ", " longitudinal direction ", " horizontal ", " length Degree ", " width ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", The orientation or position of the instruction such as " level ", " top ", " bottom " " interior ", " outward ", " clockwise ", " counterclockwise " The relation of putting is, based on orientation shown in the drawings or position relationship, to be for only for ease of the description present invention and simplification is retouched State, rather than indicate or imply that the device or element of indication must be with specific orientation, with specific orientation Construction and operation, therefore be not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying Relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", The feature of " second " can be expressed or implicitly include one or more this feature.The present invention's In description, " multiple " are meant that at least two, such as two, three etc., unless otherwise clearly concrete Restriction.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", Terms such as " fixations " should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, Or it is integral；Can be mechanically connected, or electrically connect or can communicate with one another；It can be direct phase Even, it is also possible to be indirectly connected to by intermediary, can be two element internals connection or two elements Interaction relationship.For the ordinary skill in the art, can understand above-mentioned as the case may be Term concrete meaning in the present invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " Or D score can include the first and second feature directly contacts, it is also possible to it is special including first and second Levying is not directly contact but by the other characterisation contact between them.And, fisrt feature exists Second feature " on ", " top " and " above " including fisrt feature directly over second feature And oblique upper, or fisrt feature level height is merely representative of higher than second feature.Fisrt feature is second Feature " under ", " lower section " and " below " including fisrt feature immediately below second feature and tiltedly Lower section, or fisrt feature level height is merely representative of less than second feature.
Describe power-driven system 1000 according to embodiments of the present invention below with reference to accompanying drawings in detail, should Power-driven system 1000 is can be applicable in vehicle.
As shown in Figure 10, power-driven system 1000 according to some embodiments of the invention mainly includes Differential mechanism 100, variator 104, electromotor 301, the first motor generator 501 and second electronic Motor 502.Wherein variator 104 is connected with electromotor 301 and differential mechanism 100 respectively, and is sent out Motivation 301 can be by the power of generation by exporting to input unit 3 after variator 104, that is to say, that Variator 104 can be exported the power from electromotor 301 to input unit 3 after chronotropic action. First motor generator 501 and the first gear ring 13 link and the second motor generator 503 and the second gear ring 23 Linkage.
In a further embodiment, as shown in Figure 11-Figure 20, power-driven system 1000 also includes the Three motor generator 401, the 3rd motor generator 401 are connected with variator 104, and the 3rd electronic The power that electromotor 401 is produced can be by exporting to input unit 3 after variator 104, that is to say, that In the embodiment, variator 104 can be by from electromotor 301 and/or the 3rd motor generator 401 Power exported after chronotropic action to input unit 3.For the 3rd motor generator 401 and speed change The connected mode of device 104, is discussed in detail below in conjunction with specific embodiments.
The concrete structure of differential mechanism 100 is described in detail according to diagram embodiment first below, it is right To describe after differential mechanism 100 being discussed in detail and constructs in other constructions of power-driven system 1000.
Differential mechanism 100 according to embodiments of the present invention is described in detail with reference to Fig. 1-Fig. 9, The differential mechanism 100 can be used for differential or shaft space difference speed between wheel, as a example by differential between wheel, the difference Fast device 100 can be such that driving wheels travel in turn inside diameter or when uneven road surface is travelled with difference Angular velocity roll, to ensure two side drive wheel and ground catch cropping PURE ROLLING.
As shown in figure 1, differential mechanism 100 according to embodiments of the present invention by input unit 3, the first row 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 compositions.
With reference to the embodiment of Fig. 1 and Fig. 2, the first row carrier 11 and the second planet carrier 21 it is so structured that Circular platy structure, so can reduce the axial dimension of differential mechanism 100 to a certain extent.At some In embodiment, the first row carrier 11 and the second planet carrier 21 can be split-type structural, due to independent widget Molding is relatively easy, therefore the first row carrier 11 and the second planet carrier 21 are individually processed and can be simplified Manufacturing process, raising machining accuracy.
Such as Fig. 1-Fig. 2 and with reference to shown in Fig. 6, the first row star-wheel 12 is arranged in the first row carrier 11, For example, each the first row star-wheel 12 have a first planet wheel shaft 14, the two of first planet wheel shaft 14 Individual end is rotatably supported in the first row carrier 11 and the second planet carrier 21 respectively, such as the first row star-wheel Two ends of axle 14 can be rotatably supported in the first row carrier 11 and the second planet carrier by bearing In the axis hole corresponded to each other on 21, now the first row star-wheel 12 is securable to corresponding first planet wheel shaft 14 On.Certainly, two ends of first planet wheel shaft 14 and the first row carrier 11 and the second planet carrier 21 Can be fixedly connected, for example the two of first planet wheel shaft 14 end respectively with the first row carrier 11 It is welded and fixed with the axis hole corresponded to each other on the second planet carrier 21, now the first row star-wheel 12 rotationally covers It is located on corresponding first planet wheel shaft 14, for example the first row star-wheel 12 can be rotationally covered by bearing It is mounted on first planet wheel shaft 14.Thus, can realize connecting first planet by first planet wheel shaft 14 The purpose of frame 11 and the second planet carrier 21, so that the first row carrier 11 and the second planet carrier 21 keep At the same speed, motion (i.e. the first row carrier 11 and the second planet carrier 21 link) in the same direction, and adopt this company Mode is connect, the first row carrier 11 and the second planet carrier 21 can be carried out to first planet wheel shaft 14 well Supporting/fixed, prevents first planet wheel shaft 14 to be disconnected with single planet carrier and cause differential mechanism 100 Failure.Referring to shown in Fig. 1 and Fig. 2, the first row star-wheel 12 is engaged with the first gear ring 13, concretely interior Mesh form, i.e. the first row star-wheel 12 be located at the first gear ring 13 inner side and with the first gear ring 13 on tooth Engagement.The first row star-wheel 12 is preferably several, and circumferentially equidistantly distributed on the inside of the first gear ring 13, For example, as one kind preferred embodiment, the first row star-wheel 12 can be three, and arbitrary neighborhood Between two the first row star-wheels 12, interval angles are 120 °.
Such as Fig. 1-Fig. 2 and with reference to shown in Fig. 6, the second planetary gear 22 is arranged on the second planet carrier 21, For example, each second planetary gear 22 has second planet wheel spindle 24, such as the second planet wheel spindle 24 Two ends can be rotatably supported in by bearing on the first row carrier 11 and the second planet carrier 21 each other In corresponding axis hole, now the second planetary gear 22 is securable on corresponding second planet wheel spindle 24.Certainly, Two ends of the second planet wheel spindle 24 can also be fixed with the first row carrier 11 and the second planet carrier 21 Connection, two ends of such as the second planet wheel spindle 24 respectively with the first row carrier 11 and the second planet carrier The axis hole corresponded to each other on 21 is welded and fixed, and now the second planetary gear 22 is rotatably sleeved on corresponding On two planet wheel spindles 24, for example the second planetary gear 22 can be rotatably mounted around the second planet by bearing On wheel shaft 24.Thus, can realize connecting the first row carrier 11 and second by the second planet wheel spindle 24 The purpose of planet carrier 21, so that the first row carrier 11 and the second planet carrier 21 keep synchronized, in the same direction Motion, and this connected mode is adopted, the first row carrier 11 and the second planet carrier 21 can be right well Second planet wheel spindle 24 carries out supporting/fixing, and prevents the second planet wheel spindle 24 from departing from single planet carrier and connects Connect and cause differential mechanism 100 to fail.
Additionally, in other embodiments of the present invention, in order to keep the first row carrier 11 and the second planet Frame 21 can be moved at the same speed, in the same direction, not only can be using above by first planet wheel shaft 14 and/or The mode of two planet wheel spindles 24 is realized, while intermediate connection structure 6 can also be passed through by the first row carrier 11 Directly it is fixedly connected with the second planet carrier 21, or while is connected with intermediate connection structure 6 using planet wheel spindle The first row carrier 11 and the second planet carrier 21 are connect, and will be under with regard to the specific configuration of intermediate connection structure 6 Face describes in detail.
Referring to shown in Fig. 1 and Fig. 2, the second planetary gear 22 is engaged with the second gear ring 23, concretely interior to nibble Conjunction form, i.e. the second planetary gear 22 are located at the inner side of the second gear ring 23 and are nibbled with the tooth on the second gear ring 23 Close.Second planetary gear 22 is preferably several, and circumferentially equidistantly distributed on the inside of the second gear ring 23, For example, as one kind preferred embodiment, the second planetary gear 22 can be three, and arbitrary neighborhood Between two the second planetary gears 22, interval angles are 120 °.
, wherein it is desired to explanation, Fig. 4 is the plan view of the differential mechanism 100 according to the embodiment of the present invention Sketch, which schematically illustrates meshing relation between the first row star-wheel 12 and the second planetary gear 22 with And the meshing relation of the first row star-wheel 12 and the first gear ring 13, the second planetary gear 22 and the second gear ring 23, As Fig. 4 is plane graph, and also show above-mentioned three kinds of meshing relations, therefore the relative position of each part The relation of putting is only illustrative, and is not offered as or implies the practical spatial arrangement position of each part.
It is in multiple embodiments in the first row star-wheel 12 and the second planetary gear 22, it is preferable that Duo Ge One planetary gear 12 and multiple second planetary gears 22 are respectively correspondingly engaged.For example, as shown in Figure 1, Figure 2 and figure Shown in 5, the first row star-wheel 12 and the second planetary gear 22 are three, then first the first row star-wheel 12 Can engage with corresponding first the second planetary gear 22, second the first row star-wheel 12 can be with corresponding second Individual second planetary gear 22 is engaged, and the 3rd the first row star-wheel 12 can be with corresponding 3rd the second planetary gear , so there is multigroup the first row star-wheel 12 being engaged with each other and the second planetary gear 22, in differential mechanism in 22 engagements During 100 transmission power, the first row star-wheel 12 and second planetary gear 22 of the power in multigroup engagement that corresponds to each other Between transmission more will stablize, it is reliable.
Wherein, with reference to the embodiment of Fig. 4, the revolution axes O of the first row star-wheel 12 and the second planetary gear 22 Revolution axes O overlap, and revolution-radius (the i.e. planet of the first row star-wheel 12 and the second planetary gear 22 The distance of the central axis distance revolution axes O of wheel) it is identical.
Especially, as shown in Fig. 1-Fig. 2, Fig. 4-Fig. 7, the first row star-wheel 12 and the second planetary gear 22 Engagement coordinates.In other words, for the first row star-wheel 12, which is not only engaged with the first gear ring 13, together When also engage with the second planetary gear 22, for the second planetary gear 22, its not only with the second gear ring 23 Engagement, while also engaging with the first row star-wheel 12.
As Figure 1-Figure 4, the first gear ring 13 and the second gear ring 23 may be constructed the two of differential mechanism 100 Individual clutch end, the first row carrier 11 and the second planet carrier 21 then correspond to the power for constituting differential mechanism 100 Input, for example in one embodiment of the invention, the first row carrier 11, the second planet carrier 21 with it is defeated Enter portion 3 to link, in other words, the kinestate of input unit 3, the first row carrier 11 and the second planet carrier 21 It is identical (i.e. synchronized, motion in the same direction).As preferred embodiment, input unit 3, first planet Frame 11 and the second planet carrier 21 are coaxially arranged.The power of so external power supply output can be from input unit 3 Input, can be exported from the first gear ring 13 and the second gear ring 23 after the differential action of differential mechanism 100 respectively.
It is applied between wheel, as a example by differential, briefly describe the work original of differential mechanism 100 by the differential mechanism 100 below Reason, now the first gear ring 13 can be connected with left half axle, and left half axle can be connected with left side wheel, the second gear ring 23 can be connected with right axle shaft, and right axle shaft can be connected with right side wheels, and power source such as electromotor and/or motor is defeated The power for going out can be exported after the decelerating effect of main reducing gear to input unit 3, and input unit 3 drives the first row 21 synchronous rotary of carrier 11 and the second planet carrier.If now vehicle traveling is on smooth road surface and without turning, Rotating speed is identical in theory with right side wheels for left side wheel, and now differential mechanism 100 does not play differential action, the first row Carrier 11 and the second planet carrier 21 is synchronized, rotating in same direction, the first gear ring 13 and the second gear ring it is 23 synchronized, Rotating in same direction, the first row star-wheel 12 and the second planetary gear 22 revolution, not rotations.If now vehicle is travelled Travel on irregular road surface or turn inside diameter, rotating speed is different in theory with right side wheels for left side wheel, the The rotating speed of one gear ring 13 and the second gear ring 23 is also different, that is, there is speed discrepancy, now the first row star-wheel 12 With the second planetary gear 22 revolution while also rotation, the first row star-wheel 12 and the second planetary gear 22 from The change of team cause the first gear ring 13 and the second gear ring 23 in a speedup, another deceleration, the gear ring of speedup The speed discrepancy of left and right wheelses is with the speed discrepancy of the gear ring for slowing down, so as to realize differential action.
To sum up, differential mechanism 100 according to embodiments of the present invention utilizes planet differential principle, in structure and connection Space availability ratio is higher in form, and axial dimension is less, and more advantageous in production and fit on.This The version of sample can not only avoid the dimensional defects that angular wheel is axially and radially gone up, and additionally may be used To better profit from the space that master subtracts driven gear inner hollow, preferably space availability ratio is realized, greatly The arrangement of 100 assembly of differential mechanism and the restriction to weight size are facilitated, while also possessing higher Reliability and more preferably transmission efficiency, be conducive to improving the reliability of power chain and it is excessively curved when power Output fluency, this has more practicality for symmetrical expression bevel differential.
Below the meshing relation of first planet wheel 12 and the second planetary gear 22 is carried out in conjunction with specific embodiments in detail It is thin to describe.
Reference picture 1- Fig. 2 and Fig. 6-Fig. 7 is combined, the first row star-wheel 12 and the second planetary gear 22 are in axial direction Partly overlap on (left and right directions in Fig. 6-Fig. 7), that is to say, that the first row star-wheel 12 and the second planet 22, wheel overlaps, and part in addition is staggered, and the first row star-wheel 12 and the second planetary gear 22 are overlapped Part can be engaged with each other, and the part staggered then can be engaged with respective gear ring.
Specifically, with reference to shown in Fig. 6 and Fig. 7, the first row star-wheel 12 can include 151 He of the first teeth portion Second teeth portion 152 (K2 dotted lines are as demarcation line with Fig. 7), the second planetary gear 22 can include the 3rd tooth Portion 153 and the 4th teeth portion 154 (K1 dotted lines are as demarcation line with Fig. 7), the second teeth portion 152 and the 3rd tooth Portion 153 constitutes lap, i.e. the second teeth portion 152 with the 3rd teeth portion 153 overlap corresponding in the axial direction and nibbles Close and coordinate, the first teeth portion 151 and the 4th teeth portion 154 are staggered in the axial direction and engaged with each self-corresponding gear ring, 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 compacter, the volume of differential mechanism 100 is more compact, Installation, arrangement beneficial to differential mechanism 100.
Some embodiments of the invention, the number of teeth of the first gear ring 13 are equal with the number of teeth of the second gear ring 23, The number of teeth of the first row star-wheel 12 is equal with the number of teeth of the second planetary gear 22.
Some embodiments of the invention, the first row star-wheel 12 and the second planetary gear 22 are roller gear, Conventional symmetrical formula bevel differential is compared, 100 structure of differential mechanism using roller gear is compacter, had For body, in structure and type of attachment, space availability ratio is higher for which, and axial dimension is less, and in production It is more advantageous with fit on.
The structure of the first gear ring 13 and the second gear ring 23 is described in detail with reference to specific embodiment.
In some embodiments of the invention, the first gear ring 13 and the second gear ring 23 are symmetrical structure, change speech It, the first gear ring 13 and the second gear ring 23 are symmetrical arranged, and can so increase the versatility of gear ring, reduce Cost.
Specifically, as Figure 1-Figure 2, each in the first gear ring 13 and the second gear ring 23 is wrapped Include：Body panels portion 161 and the annular side wall portion 162 on the periphery edge for being arranged on body panels portion 161, lead Body flat part 161 and annular side wall portion 162 can be integrally formed part.The inwall of annular side wall portion 162 Multiple gear teeth are provided with face, limit between body panels portion 161 and annular side wall portion 162 cavity A1, A2, i.e., limit cavity A1 between the body panels portion 161 of the first gear ring 13 and annular side wall portion 162, Cavity A2 (such as Fig. 4) is limited between the body panels portion 161 of the second gear ring 23 and annular side wall portion 162, The cavity A2 in cavity A1 and the second gear ring 23 in first gear ring 13 is toward each other constituting installing space A (such as Fig. 4), wherein the first row carrier 11 and the first row star-wheel 12 and the second planet carrier 21 and second Planetary gear 22 is accommodated in installing space A, so that the structure of differential mechanism 100 is relatively more compact, Take volume less, it is easier to arrange, while the first gear ring 13 and the second gear ring 23 serve as external shell Function, can protect and be accommodated in planet carrier therein and planetary gear, improve the life-span.Additionally, the first gear ring 13 and second the installing space A that limited of gear ring 23 comparatively close, outside debris are not easily accessible Moving component is affected in installing space A, it is ensured that the steady operation of differential mechanism 100.
Below the specific configuration of input unit 3 is described in detail in conjunction with specific embodiments.
Some embodiments of the invention, input unit 3 are configured to input end gear.Further, as schemed Shown in 1- Fig. 3, input end gear 3 is configured to annular (tooth of the input end gear 3 is formed on outer peripheral face) And it is set in the outer surface of the first gear ring 13 and the second gear ring 23, it is to be understood that input end gear 3 internal diameter size can be more than the external diameter of the first gear ring 13 and the second gear ring 23, so by by input Gear 3 is enclosed within the outside of the first gear ring 13 and the second gear ring 23 so that positioned at the part of two gear ring inners It is not exposed from coming, protects the part of gear ring inner.
With reference to shown in Fig. 4, the first gear ring 13 and the second gear ring 23 are provided with clearance D in the axial direction, also It is to say, the first gear ring 13 is spaced apart from each other in the axial direction with the second gear ring 23, is not brought into close contact.For For those skilled in the art, due to the first row star-wheel 12 and the width of the mate of the second planetary gear 22 Determine the size of the clearance D (in addition, the thickness for extending arm 63 can also be determined to a certain extent The clearance D, this will be described hereinafter, and first only be determined with the width of the mate of two planetary gears 22 here Illustrate as a example by fixed gap D), i.e. the width of the mate of the first row star-wheel 12 and the second planetary gear 22 can With equal with the minima of the clearance D, therefore by controlling the first row star-wheel 12 and the second planetary gear 22 The width of mate, can with the size of the indirect control clearance D, to those skilled in the art, Ensureing that the first row star-wheel 12 and the second planetary gear 22 being capable of stable delivery power and the first row star-wheels 12 On the premise of the service life of the second planetary gear 22, can be by the first row star-wheel 12 and the second planetary gear 22 Mate width arrange relative narrower, so can effectively reduce the clearance D so that differential mechanism 100 axial dimension is less, more compact, it is easy to arrange.
Further, input end gear 3 surround and covers the clearance D.As a result, the envelope of installing space A More preferably, outside debris are more difficult to enter in installing space A and affect moving component closing property, further ensure The steady operation of differential mechanism 100, at the same at least can also save to a certain extent differential mechanism axial space and Radial space.
Additionally, conduct is preferred embodiment, retarder driven gearwheel based on input end gear 3.Thus, The space that master subtracts driven gear inner hollow can be better profited from, preferably space availability ratio is realized, greatly Facilitate the arrangement of 100 assembly of differential mechanism and the restriction to weight size.
It should be noted that the clearance D of above-mentioned Fig. 4 (with reference to Fig. 1-Fig. 2) refers to the first gear ring 13 Annular side wall portion 162 and the second gear ring 23 the distance between annular side wall portion 162.For example, see figure 1st, the embodiment of Fig. 2 and Fig. 4, the first gear ring 13 and the second gear ring 23 all include body panels portion 161 With annular side wall portion 162.
And the present invention other embodiments in, such as referring to the embodiment of Fig. 8 and Fig. 9 in, the first gear ring 13 and second each in gear ring 23 still further comprise annular flange portion 163, annular flange portion 163 Extend from direction of the end of annular side wall portion 162 away from body panels portion 161, in the embodiment of Fig. 8 In, the internal diameter of annular flange portion 163 can be generally equalized with the external diameter of annular side wall portion 162, such convex annular Edge 163 is diametrically equivalent to outwardly annular side wall portion 162 (i.e. the first gear ring 13 or the second tooth The outer peripheral face of circle 23).And in the embodiment in fig. 9,163 external diameter of annular flange portion can be with annular side wall portion 162 external diameter is generally equalized, and the internal diameter of annular flange portion 163 can be more than the interior of annular side wall portion 162 Footpath, that is to say, that 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, in the gear ring structure of Fig. 1, Fig. 2 and Fig. 4 embodiment, two gear ring Between clearance D refer to the gap between the annular side wall portion 162 of two gear rings.And Fig. 8 and Fig. 9 is implemented Gear ring structure in example, the clearance D between two gear ring refer to the annular flange portion 163 of two gear rings Between gap.
For the clearance D, between the engaging width of two planetary gears mentioned above can be determined to a certain extent The size of gap D, at the same time, the thickness for extending arm 63 also determines clearance D to a certain extent Size.Specifically, when the engaging width of two planetary gears is equal with the thickness for extending arm 63, should The big I of clearance D is generally equalized with the thickness of the engaging width of two planetary gears or extension arm 63. And extend arm 63 thickness more than two planetary gears engaging width when, the big I of the clearance D with The thickness for extending arm 63 is generally equalized.And extending the engagement of the thickness less than two planetary gears of arm 63 During width, the big I of the clearance D is generally equalized with the engaging width of two planetary gears.
Intermediate connection structure 6 is described in detail with reference to specific embodiment.
As depicted in figs. 1 and 2, the effect of intermediate connection structure 6 be for by the first row carrier 11, Two planet carriers 21 are connected to input unit 3 so that the first row carrier 11, the second planet carrier 21 and input unit 3 Being capable of coaxial linkage.In addition, intermediate connection structure 6 can also respectively with the first row carrier 11, the second row Carrier 21 is fixedly connected, and the input unit 3 is fixed on the outer surface of intermediate connection structure 6, equally may be used So that the first row carrier 11, the second planet carrier 21 and input unit 3 being capable of coaxial linkages.
For the specific configuration of intermediate connection structure 6, The present invention gives a kind of feasible embodiment, when So this intermediate connection structure 6 for being not offered as or implying the present invention can only adopt the structure in the embodiment. That is, the intermediate connection structure 6 that will be introduced in example below is only a kind of feasible embodiment, not It is that the one kind to the scope of the present invention is limited.
Specifically, referring to shown in Fig. 1 and Fig. 2, the input unit 3 in the embodiment is annular input end tooth Wheel 3, intermediate connection structure 6 include the first connecting bracket 61 and the second connecting bracket 62, the first connection Frame 61 is used to connect the first row carrier 11 and input unit 3 (i.e. input end gear 3), the second connecting bracket 62 are used for the second planet carrier of connection 21 and input unit 3 (i.e. input end gear 3), wherein the first connecting bracket 61 with identical, and can may comprise each with the structure of the second connecting bracket 62：Central body portion 64 And extend arm 63 (with reference to Fig. 5), wherein the central body portion of the first connecting bracket 61 and the second connection The central body portion of support 62 can with into a single integrated structure, to form shared central body portion 64, but Not limited to this.
With reference to shown in Fig. 5, on the outer peripheral face for extending arm 63 for multiple and centrally disposed body 64, Multiple extension arms 63 and central body portion 64 can be integrative-structures, but not limited to this.Multiple adjutages Portion 63 is centered on central body portion 64 and substantially radially distributes, in the example of hgure 5, adjutage Portion 63 is three and equidistantly distributed.Extend arm 63 for being connected with input unit 3, specifically, extend The outer end of arm 63 is may extend at the inner peripheral surface of for example annular main reducing gear driven gear of input unit 3 simultaneously Fix with inner circumferential surface.
The first row star-wheel 12 of each group of correspondence engagement and the second planetary gear 22 are located at two adjacent adjutages Between portion 63, such as in the example of hgure 5, it is three to extend arm 63, and this three extend arm 63 and limit Make three accommodating chambers (to extend arm 63 per adjacent two to limit with the inner peripheral surface of input end gear 3 One accommodating chamber), each accommodates the first row star-wheel 12 and the second planet that intracavity can arrange a pair of meshing Wheel 22, so that the overall structure of differential mechanism 100 is compacter, while so that the weight of differential mechanism 100 The heart is closer or is located at center, substantially improves when differential mechanism 100 runs up due to eccentric or eccentric It is larger to cause 100 fluctuation of service of differential mechanism, life-span low situation.
In a further embodiment, as shown in Figure 3 and Figure 4, the first gear ring 13 coaxially can be connected with First output shaft 41, the second gear ring 23 can coaxially be connected with the second output shaft 42.Such as Fig. 2 and Fig. 4 Shown, while the first row carrier 11 is coaxially connected with the first row carrier axle 111, the second planet carrier 21 is same It is connected with the second planet carrier shaft 211, the first output shaft 41 can be hollow axle and coaxially can be enclosed within axle On the first row carrier axle 111, the second output shaft 42 can equally be hollow axle and coaxially be set in the second row On carrier axle 211.Wherein, the central body portion 64 of the first row carrier axle 111 and the first connecting bracket 61 Coaxial fixed, the second planet carrier shaft 211 can be coaxial with the central body portion 64 of the second connecting bracket 62 fixed, But not limited to this.
Additionally, used as optional embodiment, the first gear ring 13 is identical with the radial dimension of the second gear ring 23, And first each in gear ring 13 and the second gear ring 23 may each be and be integrally formed part.
Differential mechanism 100 according to embodiments of the present invention has been discussed in detail above, below will be to power drive line Remaining structure of system 1000 is described in detail.
Shown in reference picture 10- Figure 20, variator 104 can include multiple input shafts 101,102 and move Power output shaft 103.In certain embodiments, as shown in Figure 10-Figure 13, Figure 15-Figure 20, speed change The power output shaft 103 of device 104 can be one, but not limited to this.For example, see the enforcement of Figure 14 Example, power output shaft can also be two, i.e. the first power output shaft 103a and the second power output shaft 103b。
As shown in Figure 10-Figure 13, Figure 15-Figure 20, power output shaft 103 is arranged to and input unit 3 Linkage, such as be provided with power output shaft output gear 110, power output on power output shaft 103 Axle output gear 110 and 3 engaged transmission of input unit.As preferred embodiment, power output shaft Output gear 110 constitutes main reducing gear, wherein 110 structure of power output shaft output gear with input unit 3 Make as main reducing gear driving gear, input unit 3 is then corresponded to and is configured to main reducing gear driven gear.So, So that 1000 structure of power-driven system is compacter, and differential mechanism 100 be built in main reducing gear from Inside moving gear, differential mechanism 100 can be made to better profit from the inner space, facilitate whole power to drive The arrangement of dynamic system 1000.
Referring to Figure 10-Figure 12, the embodiment of Figure 17-Figure 20, its in multiple input shafts 101,102 In an input shaft be arranged to optionally link with power output shaft 103, in other words, such as Figure 10- Shown in Figure 11, Figure 17-Figure 20, one of input shaft such as the first input shaft 101 is (in Figure 12 102) can be linked with power output shaft 103 for the second input shaft, at the same this one of them it is defeated Enter axle such as the first input shaft 101 also to disconnect with power output shaft 103.For remaining input shaft, Then it is all provided with being set to and links with power output shaft 103, be i.e. these input shaft actions then power output shaft 103 Also follow action or 103 action of power output shaft then these input shafts also action therewith.And referring to The embodiment of Figure 11, each input shaft 101,102 be all provided with being set to optionally with power output shaft 103 linkages.
Referring to the embodiment of Figure 11, Figure 17-Figure 20, the 3rd motor generator 401 be arranged to this its In input shaft such as first input shaft 101 link, i.e., linked with the 3rd motor generator 401 Input shaft 101 is the input shaft 101 with the linkage of 103 selectivity of power output shaft.In a further embodiment, 103 overhead of power output shaft set is provided with empty set driven gear 108, empty set driven gear 108 with it is above-mentioned One of input shaft linkage, it is driven with empty set that lock unit 109 is arranged for synchronous dynamic output shaft 103 Gear 108.It is understood that when lock unit 109 is in engagement state, lock unit 109 is synchronous empty Set driven gear 108 and power output shaft 103, so the power from the 3rd motor generator 401 can Export to differential mechanism 100, and in lock unit from power output shaft 103 under the conjugation of lock unit 109 109 when being off, and the 3rd motor generator 401 is equivalent to disconnecting with power output shaft 103.By This, lock unit 109 serves as the power switch of the 3rd motor generator 401, can control the 3rd dynamoelectric and power generation The output of 401 power of machine and disconnection.
Used as a kind of optional embodiment, lock unit 109 is arranged on power output shaft 103 and for connecing Close empty set driven gear 108.Thus, simple structure, it is easy to accomplish.
Referring to shown in Figure 10-Figure 11, Figure 17-Figure 20, for remaining input shaft and power output shaft 103 The kind of drive, can be realized by gear transmission mode.For example, it is fixedly installed on power output shaft 103 There is fixed driven gear 107, fixed driven gear 107 is linked with remaining input shaft, that is, remove above-mentioned figure 11st, the input shaft 102 in the input shaft 101 or Figure 12 embodiments in Figure 17-Figure 20 embodiments.
For example, see the specific embodiment of Figure 10-Figure 12, is fixedly installed on power output shaft 103 simultaneously There is fixed driven gear 107, and be set with empty set driven gear 108, and accordingly fix on input shaft It is provided with fixed driving gear 105,106, empty set driven gear 108 and fixed 107 points of driven gear Do not engage with corresponding fixed driving gear.Such as, empty set driven gear 108 and fixed driven gear 107 Total sum it is identical with the quantity of fixed driving gear.
Referring to the number of the example of Figure 10-Figure 12, empty set driven gear 108 and fixed driven gear 107 Amount is one, and accordingly, the quantity of fixed driving gear is two, empty set driven gear 108 with One fixed driving gear engagement constitutes a pair of gear pairs, and fixed driven gear 107 is fixed with another Driving gear engagement constitutes another to gear pair, it will be understood that the transmission speed ratio of two pairs of gear pairs is not Together, transmission gear of the variator 104 therefore in the embodiment with two not synchronized ratios, it is so dynamic The structure of power-driven system 1000 is relatively easy, compact, and also disclosure satisfy that normal vehicle operation pair The requirement of transmission speed ratio.
As shown in Figure 10-Figure 20, multiple input shafts include the first input shaft 101 and the second input shaft 102, First input shaft 101 can be solid shafting, and the second input shaft 102 can be hollow axle, and second is input into Axle 102 is set on the first input shaft 101, and such as the second input shaft 102 is coaxially enclosed within the first input On axle 101, the axial length of the first input shaft 101 is more than the axial length of the second input shaft 102, One end such as right-hand member of the first input shaft 101 can be internally extended from the second input shaft 102.
Further, as shown in Figure 10-Figure 12, each input shaft can only be fixedly installed a fixation Driving gear, that is to say, that fixed driving gear includes that the first fixation driving gear 106 and second is solid Determine driving gear 105, the first fixation driving gear 106 is fixedly installed on the first input shaft 101, Second fixation driving gear 105 is fixedly installed on the second input shaft 102.
Shown in Figure 10-Figure 11, Figure 17-Figure 20, empty set driven gear 108 and first is fixed actively Gear 106 is engaged, and fixed driven gear 107 is engaged with the second fixation driving gear 105, while the Three motor generator 401 are linked with the first input shaft 101, and such as the 3rd motor generator 401 passes through tooth Wheel construction is linked with the first fixation driving gear 106, and concretely the 3rd motor generator 401 passes through Gear 402, gear 403 are driven with the first fixation driving gear 106, above-mentioned by reasonable design The number of teeth of gear can obtain the transmission speed ratio needed for the 3rd motor generator 401.
And in the illustration in fig 12, empty set driven gear 108 is engaged with the second fixation driving gear 105, Fixed driven gear 107 is engaged with the first fixation driving gear 106, while the 3rd motor generator 401 Link with the second input shaft 102, such as the 3rd motor generator 401 passes through gear structure and second to be fixed Driving gear 105 links, concretely the 3rd motor generator 401 by gear 402, gear 403, Gear 404, gear 405 are driven with the second fixation driving gear 105, its middle gear 404 and gear 405 can be fixed on same axle 406, can be obtained by the number of teeth of reasonable design said gear Transmission speed ratio needed for 3rd motor generator 401.
Further, as shown in Figure 10-Figure 20, power-driven system 1000 can also include electromotor 301, electromotor 301 is arranged to optionally engage with least one of multiple input shafts, specifically Ground, input shaft is two, and is provided with double clutch 204 between electromotor 301 and two input shafts. Double clutch 204 includes：First bonding part 201, the second bonding part 202 and the 3rd bonding part 203, Wherein the first bonding part 201 and the second bonding part 202 can be two of double clutch 204 driven Disk, the 3rd bonding part 203 can be the housing of double clutch 204, at least one of two clutch plates It is selectively engageable housing, that is to say, that in the first bonding part 201 and the second bonding part 202 At least one can be selectively engaged the 3rd bonding part 203.Certainly, two clutch plates can also be with shell Body is all off, i.e. the first bonding part 201 and the second bonding part 202 with the 3rd bonding part 203 It is off.
Referring to Figure 10-Figure 20, electromotor 301 is connected with the 3rd bonding part 203, the first input shaft 101 It is connected with the first bonding part 201, the second input shaft 102 is connected with the second bonding part 202.So, The power that electromotor 301 is produced can be optionally exported to the first input shaft by double clutch 204 101st, the second input shaft 102.
In other embodiment, as shown in Figure 15-Figure 16, each input shaft is all provided with being set to and moves Power output shaft 103 links, and in other words, as shown in Figure 15-Figure 16, any one input shaft is rotated then Power output shaft 103 also follow action or power output shaft 103 rotate then these input shafts also with Action.
As shown in Figure 15-Figure 16, the 3rd motor generator 401 is arranged to link with one of input shaft. As in the example of fig. 15, the 3rd motor generator 401 is linked with the first input shaft 101, concretely 3rd motor generator 401 is passed by gear 402, gear 403 and the first fixation driving gear 106 It is dynamic.And in the example of Figure 16, the 3rd motor generator 401 is linked with the second input shaft 102, specifically Can for the 3rd motor generator 401 by gear 402, gear 403, gear 404, gear 405 with Second fixation driving gear 105 is driven, and its middle gear 404 and gear 405 can be fixed on same axle On 406.
In some embodiments, for input shaft 101,102 and the kind of drive of power output shaft 103, Can be driven using traditional shift gear pair.
For example, as shown in Figure 15 and Figure 16, multiple fixations are fixedly installed on power output shaft 103 driven Gear 107a, 107b, are fixedly installed fixed driving gear and (for example, first fix on each input shaft 105) driving gear 106 and second fixes driving gear, fixes driven gear and corresponding fixed driving tooth Wheel engagement.
As shown in Figure 15 and Figure 16, fixed driven gear 107a engages composition with fixed driving gear 105 A pair of shift gear pairs, it is another to tooth that fixed driven gear 107b engages composition with fixed driving gear 106 Wheel set.It is appreciated that the transmission speed ratio of two pairs of gear pairs is different, therefore the speed change in the embodiment Transmission gear of the device 104 with two not synchronized ratios, the structure of such power-driven system 1000 are relative Simply, it is compact, and also disclosure satisfy that requirement of the normal vehicle operation to transmission speed ratio.
Some embodiments (i.e. embodiment shown in Figure 15 and Figure 16) and above-mentioned Figure 10-Figure 12 realities Apply differring primarily in that for example：Lock unit 109 is eliminated, while empty set driven gear 108 is changed to Be directly anchored on power output shaft 103, constitute fixed driven gear, remainder then with Figure 10- Figure 11 embodiments are basically identical, therefore no longer repeat one by one here.
In the example in figure 13, i.e., in multiple input shafts, the embodiment of single power output shaft 103, Input shaft is fixedly installed on one of input shaft such as the first input shaft 101 and fixes motor gear 111a, 103 overhead of power output shaft set are provided with power output shaft empty set motor gear 111b, power Output shaft empty set motor gear 111b fixes motor gear 111a with input shaft and engages, and the 3rd electric Dynamic electromotor 401 fixes motor gear 111a linkages, such as the 3rd motor generator 401 with input shaft Motor gear 111a transmissions are fixed by gear 402, gear 403 and input shaft.In the embodiment, Power-driven system 1000 equally includes lock unit 109, and lock unit 109 is arranged for synchronous dynamic Output shaft 103 and power output shaft empty set motor gear 111b, such as lock unit 109 are arranged on power On 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, a main difference It is：Figure 13 embodiment motor gears (the 3rd motor generator 401) is by the gear that is separately provided Secondary (i.e. input shaft fixes motor gear 111a and power output shaft empty set motor gear 111b) is realized The output of motor power, and in the embodiment of Figure 10-Figure 12, motor gear is by corresponding gear Gear pair realizes the output of motor power.
Additionally, for Figure 13 embodiments are compared with above-mentioned Figure 10-Figure 12 embodiments, also one main It is different that difference is driven gear.Specifically, in the embodiment of Figure 13, it is fixedly installed on each input shaft There are multiple fixed driving gears, and in the embodiment of Figure 10-Figure 12, only fixation sets on each input shaft It is equipped with a fixed driving gear.Accordingly, in the embodiment of Figure 13, due on each input shaft Multiple fixed driving gears are fixedly installed, therefore 103 overhead of power output shaft set is provided with multiple skies Set driven gear, each empty set driven gear are engaged with corresponding fixed driving gear, and each is empty Set driven gear can be bonded to power output shaft 103 by the synchronization of corresponding gear lock unit.
For example, with reference to the example of Figure 13, two gears are fixedly installed on the first input shaft 101 and are fixed actively The fixed driving gear 6a of the fixed gears of driving gear 4a and six of gear 2a, four gears, the second input shaft 102 On be fixedly installed a gear to fix driving gear 1a, the fixed driving gear 3a of three gears, five gears fixed actively The fixed driving gear 7a of the gears of gear 5a and seven, 103 empty set of power output shaft be provided with a gear empty set from Moving gear 1b, two gear empty set driven gear 2b, three gear empty set driven gear 3b, four gear empty sets are driven Gear 4b, five gear empty set driven gear 5b, six gear empty set driven gear 6b and seven gear empty set driven tooths Wheel 7b.
Wherein one gear empty set driven gear 1b driving gear 1as fixed with a gear is engaged so as to constitute a gear Gear pair, two gear empty set driven gear 2b driving gear 2as fixed with two gears are engaged so as to constitute two gears Gear pair, three gear empty set driven gear 3b driving gear 3as fixed with three gears are engaged so as to constitute three gears Gear pair, four gear empty set driven gear 4b driving gear 4as fixed with four gears are engaged so as to constitute four gears Gear pair, five gear empty set driven gear 5b driving gear 5as fixed with five gears are engaged so as to constitute five gears Gear pair, six gear empty set driven gear 6b driving gear 6as fixed with six gears are engaged so as to constitute six gears Gear pair, seven gear empty set driven gear 7b driving gear 7as fixed with seven gears are engaged so as to constitute seven gears Gear pair.
Further, it is shown in Figure 13, be additionally provided with power output shaft 103 one or three gear lock unit 13c, Five or seven gear lock unit 57c, two gear lock unit 2c and four or six gear lock unit 46c, one or three gear lock unit 13c Keep off between empty set driven gear 3b and be selectively engageable positioned at a gear empty set driven gear 1b and three One gear empty set driven gear 1b or three gear empty set driven gear 3b, five or seven gear lock unit 57c are located at five Gear empty set driven gear 5b and seven keeps off between empty set driven gear 7b and is selectively engageable five gears sky The gear empty set driven gear 7b of set driven gear 5b or seven, two gear lock unit 2c are used for engagement two and keep off empty set Driven gear 2b, four or six gear lock unit 46c positioned at four gear empty set driven gear 4b and six gear empty sets from It is between moving gear 6b and driven for being selectively engaged the gear empty sets of six gear empty set driven gear 6b and four Gear 4b.
Thus, the variator 107 is configured with the forward gear of seven not synchronized ratios, preferably can meet The driving requirements of vehicle.
Variator 104 in other embodiments, the speed change in the embodiment are described referring to Figure 14 The main area of the variator 100 in device 104 and above-mentioned Figure 10-Figure 13, Figure 15-Figure 16 embodiments Not Wei power output shaft 103 quantity, in above-described embodiment power output shaft 103 be one, the reality In applying example, power output shaft 103 is multiple such as two, as the quantity of power output shaft 103 increases, Therefore other constructions are also unlike the embodiments above, describe in detail below in conjunction with accompanying drawing.
Shown in Figure 14, the variator 104 in the embodiment includes multiple input shafts 101,102 With multiple power output shafts, such as multiple power output shafts include the first power output shaft 103a and second Power output shaft 103b.Wherein, the 3rd motor generator 401 can be with its in multiple power output shafts In power output shaft such as 103b linkage, each power output shaft is arranged to can be by from electromotor 301 and/or the 3rd motor generator 401 power output to input unit 3.
Further, as shown in figure 14, variator 104 can also include motor power axle 103c, the 3rd Motor generator 401 is coaxially connected with motor power axle 103c, motor power axle 103c be arranged to One of power output shaft linkage, such as motor power axle 103c and the second power output shaft 103b Linkage.
For motor power axle 103c and the linked manner of the second power output shaft 103b, referring to Figure 14 Shown, the first motor gear 103d is fixedly installed on motor power axle 103c, the second motor gear 103e is fixedly installed on one of power output shaft such as the second power output shaft 103b, and first is electric Machine gear 103d is engaged with the second motor gear 103e.In short, in the embodiment, the second power Output shaft 103b and motor power axle 103d be by gear-driven, i.e., by be engaged with each other One motor gear 103d and the second motor gear 103e realize power transmission.
For the variator 104 in the embodiment, its structure of reversing gear is shown in Figure 14, and reverse gear output gear Wheel 601 is engaged with input unit 3, and reverse idler gear 604 is engaged with reverse output gear 601, in reversing gear Between 604 empty set of gear wherein on power output shaft such as the second power output shaft 103b, centre of reversing gear Gear 604 can be bonded to power output shaft 103b by the synchronization of reverse gear synchronizer 604c.Tool Body ground, reverse output gear 601 can be duplicate gear, and which has gear part 602,603, gear part 602 Engage with input unit 3, gear part 603 is engaged with reverse idler gear 604, the duplicate gear can empty set exist On motor power axle 103c, but not limited to this.
For the bang path that reverses gear, substantially it is divided into two kinds, one of which is driven for electromotor 301, for example, send out The power that motivation 301 will be produced by double clutch 204, the first input shaft 101 or the second input shaft 102 Export to the second power output shaft 103b, reverse gear synchronizer 604c engagement reverse idler gears 604, the portion Sub-power is again by exporting from reverse output gear 601 after reverse idler gear 604.It is another kind of electric for the 3rd Dynamic electromotor 401 drives, and the power for producing is passed through the first motor tooth by such as the 3rd motor generator 401 Wheel 103d and the second motor gear 103e is exported to the second power output shaft 102b, reverse gear synchronizer 604c Engagement reverse idler gear 604, the partial power again by after reverse idler gear 604 from the output gear that reverses gear Wheel 601 is exported.Certainly, electromotor 301 and the 3rd motor generator 401 can also export simultaneously reverse gear it is dynamic Power, now two parts reverse gear power couple on the second power output shaft 102b after by reverse idler gear Export from reverse output gear 601 after 604.
It is shown in Figure 14, as the power output shaft of variator 104 in the embodiment is for multiple, and often Individual power output shaft can externally export power, thus each power output shaft be provided with can be defeated by power Go out to the export structure of input unit 3.Specifically, one of power output shaft such as the second power is defeated Shaft 103b overhead set is provided with power output shaft empty set output gear 605, remaining each power output Power output shaft is fixedly installed on axle such as the first power output shaft 103a and fixes output gear 606, power Output shaft empty set output gear 605 and power output shaft are fixed output gear 606 and are engaged with input unit 3 respectively Transmission.
For example, in the specific example of Figure 14, it is fixedly installed on the first power output shaft 103a dynamic defeated Shaft fixes output gear 606, and the power output shaft is fixed output gear 606 and engaged with input unit 3, and Second power output shaft 103b overhead set is provided with power output shaft empty set output gear 605, power output Axle empty set output gear 605 is engaged with input unit 3.
Wherein, power output shaft empty set output gear 605 is same dynamic due to being in reverse idler gear 604 On power output shaft 103b, therefore as one kind preferred embodiment, power output shaft empty set output gear 605 share reverse gear synchronizer 604c with reverse idler gear 604, such as shown in Figure 14, synchronization of reversing gear Device 604c to the left engageable power output shaft empty set output gear 605, move right engageable centre of reversing gear Gear 604.Thus, it is possible to save a lock unit, frame for movement is not only simplify, and be also simplify Control strategy, reduces cost.
Additionally, for the power-driven system 1000 in Figure 14 embodiments, its electromotor 301 by it is double from Clutch 204 is connected with the first input shaft 101 and the second input shaft 102, and this part is identical with remaining embodiment, Here repeat no more.
In the embodiment, referring to Figure 14, a gear is fixedly installed on the first input shaft 101 and fixes driving tooth It is fixed on the fixed driving gear 5a of the fixed gears of driving gear 3a and five of wheel 1a, three gears, the second input shaft 102 It is provided with two gears and fixes the gears of driving gear 2a and four or six fixed driving gear 46a, the first power output shaft 103a Overhead set is provided with two gear empty set driven gear 2b, four gear empty set driven gear 4b, three gear empty set driven tooths The gear empty set driven gear 1b of wheel 3b and, the second power output shaft 103b overhead set are provided with five gear empty sets The gear empty set driven gear 6b of driven gear 5b and six.
As shown in figure 14, wherein gear empty set driven gear 1b driving gear 1as fixed with a gear is engaged So as to constitute first gear pair, two gear empty set driven gear 2b driving gear 2as fixed with two gears is engaged So as to constitute second gear pair, three gear empty set driven gear 3b driving gear 3as fixed with three gears is engaged So as to constitute three gear gear pairs, four gear empty set driven gear 4b driving gear 46as fixed with four or six gears is nibbled Close so as to constitute four gear gear pairs, five gear empty set driven gear 5b driving gear 5as fixed with five gears is nibbled Close so as to constitute five gear gear pairs, six gear empty set driven gear 6b and the fixed driving gear 46a of four or six gears Engage so as to constitute six gear gear pairs.
Further, as shown in figure 14, two or four gear lock units are provided with the first power output shaft 103a The gear lock unit 13c of 24c and or three, are provided with five or six gear lock unit 56c on the second power output shaft 103b, One or three gear lock unit 13c be arranged on the gears of a gear empty set driven gear 1b and three empty set driven gear 3b it Between and keep off the gear empty set driven gear 3b of empty set driven gear 1b or three for engagement one, two or four gears are synchronous Device 24c is arranged between the gear empty set driven gear 4b of two gear empty set driven gear 2b and four and for connecing Close two and keep off the gear empty set driven gear 4b of empty set driven gear 2b or four, five or six gear lock unit 56c are arranged Empty set is kept off between five gear empty set driven gear 5b and six gear empty set driven gear 6b and for engagement five The gear empty set driven gear 6b of driven gear 5b or six.
Thus, the variator 107 is configured with the forward gear of six not synchronized ratios, preferably can meet The driving requirements of vehicle.
Below to the first motor generator 501 and the first gear ring 13 and the second motor generator 503 and The interactively of two gear rings 23 is described in detail.
Referring to Figure 10-Figure 20 and with reference to shown in Fig. 1-Fig. 9, the first motor generator 501 and the first gear ring 13 linkages, the second motor generator 503 are linked with the second gear ring 23.Further, first gear ring 13 The first external tooth 505 is provided with outer peripheral face, the first external tooth 505 may be integrally formed at the first gear ring 13 On outer peripheral face.It is provided with the second external tooth 506 on the outer peripheral face of the second gear ring 23, the second external tooth 506 can one It is formed on the outer peripheral face of the second gear ring 23 body.First motor generator 501 is and the first external tooth 505 Linkage, the second motor generator 503 is linked with the second external tooth 506.
Further, gear 502, gear 502 can be provided with the motor shaft of the first motor generator 501 Engage with the first external tooth 505, on the motor shaft of the second motor generator 503, gear 504, tooth can be provided with Wheel 504 is engaged with the second external tooth 506.However, it will be understood that the first motor generator 501 and One gear ring 13 and the second motor generator 503 are not limited to retouch here with the linked manner of the second gear ring 23 The mode stated.
Referring to shown in Figure 10-Figure 20, the first motor generator 501 and the second motor generator 503 with regard to 100 symmetrical distribution of differential mechanism, can so cause the center of gravity of power-driven system 100 in centre bit Put or closer to center.
Referring to the embodiment of Figure 21-Figure 22, the power-driven system 1000 and Figure 10-figure in the embodiment One of power-driven system 1000 in 19 embodiments differs primarily in that：The quantity of input shaft.This one In a little embodiments, input shaft includes the first input shaft 101, the second input shaft 102 and the 3rd input shaft 1003, 3rd input shaft 1003 can be hollow axle and be set on the second input shaft 102, the second input shaft 102 Can also be hollow axle and be set on the first input shaft 101, three input shafts can be coaxially arranged. Pass through between electromotor 301 and the first input shaft 101, the second input shaft 102 and the 3rd input shaft 1003 Three clutches 205 are connected, and specifically, three clutches 205 have the first clutch plate 206, second driven Disk 207, the 3rd clutch plate 208 and housing 209, housing 209 optionally with the first clutch plate 206, At least one of second clutch plate 207, the 3rd clutch plate 208 are engaged, the first input shaft 101 and first Clutch plate 206 connects, and the second input shaft 102 is connected with the second clutch plate 207, the 3rd input shaft 1003 It is connected with the 3rd clutch plate 208, electromotor 301 is connected with housing 209.In the embodiment of Figure 21, the One clutch plate 206, the second clutch plate 207, the 3rd clutch plate 208 are axially distributed, the embodiment of Figure 22 In, the first clutch plate 206, the second clutch plate 207, the 3rd clutch plate 208 are radially distributed.
The typical work of power-driven system 1000 according to embodiments of the present invention is briefly described with reference to Figure 11 Condition.
Low speed is pure electronic：Double clutch 204 is all off, and lock unit 109 disconnects, the first motor generator 501 and second motor generator 503 worked externally directly output power in motor mode.Move under the pattern Power bang path is shorter, and transmission energy loss is little, is adapted to urban congestion road conditions.
High speed is pure electronic：Double clutch 204 is all off, and lock unit 109 is in engagement state, and first is electric All work is externally exported for dynamic electromotor 501, the second motor generator 503 and the 3rd motor generator 401 Power.
Low engine speed is kept off：First bonding part 201 is engaged with the 3rd bonding part 203, the second junction surface 202 are divided to disconnect with the 3rd bonding part 203, lock unit 109 is in engagement state, now electromotor 301 The power of generation is by exporting to differential mechanism 100, by poor after the first input shaft 101, power output shaft 103 Fast device 100 is distributed to the driving wheel of both sides by power.
High engine speeds are kept off：Second bonding part 202 is engaged with the 3rd bonding part 203, the first junction surface 201 are divided to disconnect with the 3rd bonding part 203, lock unit 109 is off, now electromotor 301 The power of generation is by exporting to differential mechanism 100, by poor after the second input shaft 102, power output shaft 103 Fast device 100 is distributed to the driving wheel of both sides by power.
Power generation in parking：First bonding part 201 is engaged with the 3rd bonding part 203, the second bonding part 202 are disconnected with the 3rd bonding part 203, and lock unit 109 is off, and now electromotor 301 is produced Raw power is exported to the 3rd motor generator 401 by the first input shaft 101, drives the 3rd dynamoelectric and power generation Machine 401 is generated electricity as motor, realizes power generation in parking function.
Brake energy recovery：Lock unit 109 can be at off-state, now 501 He of the first motor generator Second motor generator 503 reclaims braking energy.Or lock unit 109 is in engagement state, now first Motor generator 501, the second motor generator 503 and the 3rd motor generator 401 all reclaim Brake Energy Amount.
Driving generates electricity：Electromotor 301 can pass through the different engagement states and lock unit of double clutch 204 109 engaging/disengaging state, and selectivity drives the first motor generator 501 and the second motor generator 503 generate electricity or drive the 3rd motor generator 401 to generate electricity, and three motors also can be driven certainly simultaneously to send out Electricity, at the same time, electromotor 301 also externally exports power, drives vehicle traveling.
Increase journey pattern：First bonding part 201 engages the 3rd bonding part 203, the second bonding part 202 Disconnect with the 3rd bonding part 203, the output power of electromotor 301 drives the 3rd motor generator 401 to generate electricity, First motor generator 501 and the second motor generator 503 export power drive vehicle as motor simultaneously Traveling.
Figure 10 embodiments eliminate the 3rd motor generator 401 with differring primarily in that for Figure 11 embodiments, For remaining construction part is then consistent, repeat no more here.
Figure 12 embodiments differ primarily in that with Figure 11 embodiments the 3rd in Figure 12 embodiments is electronic Electromotor 401 is linked with the second input shaft 102, for remaining construction part is then consistent, here no longer Repeat.
One transmission gear for differring primarily in that Figure 13 embodiments of Figure 13 embodiments and Figure 11 embodiments More than Figure 11 embodiments, these gears are engaged by the control of corresponding gear lock unit, and this is general for this area What logical technical staff will be appreciated that, therefore no longer repeat one by one here.
Figure 14 embodiments are defeated with the power of an embodiment for differring primarily in that Figure 14 of Figure 11 embodiments Shaft is for multiple, and is correspondingly arranged on multiple transmission gears, and these gears are controlled by corresponding gear lock unit Engagement, this is all will be appreciated that for those of ordinary skill in the art, therefore is no longer repeated one by one here.
The embodiment of Figure 15-Figure 16 is differred primarily in that with of Figure 11 embodiments and eliminates lock unit 109, while empty set driven gear 108 is directly anchored on power output shaft 103, therefore Figure 15-figure 16 embodiments are similar to the transmission condition of Figure 11 embodiments but there are some difference, such as Figure 15-Figure 16 Embodiment cannot realize power generation in parking operating mode etc., these for the ordinary skill in the art should All will be appreciated that, therefore no longer repeat one by one here.
For the embodiment of Figure 17-Figure 20, compared with Figure 11 embodiments, difference is that to increased rear-guard poor Speed lock.
Reference picture 17- Figure 20 is simultaneously combined shown in Fig. 1-Fig. 9, and the first gear ring 13 is linked with the near front wheel 910a, As the first gear ring 13 is coaxially connected with the near front wheel 910a, the second gear ring 23 is linked with off-front wheel 910b, such as Second gear ring 23 is coaxially connected with off-front wheel 910b.4th motor generator 901 is by gear structure and a left side Trailing wheel 910c links, and such as the 4th motor generator 901 passes through gear W1, W2, W3, W4 and left rear wheel 910c links, and gear W1 is coaxial with the 4th motor generator 901 to be connected, and gear W1 is engaged with gear W2, Gear W2 is coaxially connected with gear W3, and gear W3 is engaged with gear W4, and gear W4 can be fixedly installed on On left half axle 904, left rear wheel 910c on left half axle 904, is provided with.Similarly, the 5th motor generator 902 are linked by gear structure and off hind wheel 910d, such as the 5th motor generator 902 by gear X1, X2, X3, X4 and off hind wheel 910d linkages, gear X1 is coaxial with the 5th motor generator 902 to be connected, Gear X1 is engaged with gear X2, and gear X2 is coaxially connected with gear X3, and gear X3 is engaged with gear X4, Gear X4 can be fixedly installed on right axle shaft 905, and off hind wheel 910d is provided with right axle shaft 905.
In the example of Figure 17, anti-skidding lock unit 903 is arranged for synchromesh gear W4 and gear X4, Such as anti-skidding lock unit 903 is arranged on gear W4 and for engage gear X4.In the example of Figure 18, Anti-skidding lock unit 903 is arranged for synchromesh gear W1 and gear X1, and for example anti-skidding lock unit 903 is arranged On gear W1 and for engage gear X1.In the example of Figure 19, anti-skidding lock unit 903 is arranged to For synchromesh gear W2 and gear X2, for example anti-skidding lock unit 903 is arranged on gear W2 on and is used to connect Close gear X2.
In the example of Figure 20, anti-skidding lock unit 903 is arranged for synchronous left half axle 904 and right axle shaft 905, such as anti-skidding lock unit 903 is arranged on left half axle 904 and for engaging right axle shaft 905, the enforcement In example, the 4th motor generator 901 and the 5th motor generator 902 are wheel motor.
To sum up, anti-skidding lock unit 903 is arranged to optionally synchronization left rear wheel 910c and off hind wheel 910d, In other words, when anti-skidding lock unit 903 is in engagement state, left rear wheel 910c and off hind wheel 910d will be same Step rotation, i.e., at the same speed, rotating Vortex, now left rear wheel 910c and off hind wheel 910d will not differential rotate. And when anti-skidding lock unit 903 is off, the 4th motor generator 901 can be operated alone left rear wheel 910c, the 5th motor generator 902 can be operated alone off hind wheel 910d, and two trailing wheels are separate, mutual Do not interfere, so as to realize the differential rotating function of wheel.
Additionally, for technical scheme and/or technical characteristic described in the various embodiments described above, mutually not rushing In the case of prominent, not conflicting, those skilled in the art can by the technical scheme in above-described embodiment and / or technical characteristic be mutually combined, the technical scheme after combination can be two or more technical sides The superposition of case, the superposition of two or more technical characteristics or two or more technical schemes with The superposition of technical characteristic, thus, it is possible to realize each technical scheme and/or technical characteristic phase each other functionally Interaction and support, and the scheme after combining has more superior technique effect.
For example, those skilled in the art can be by 22 partly overlapping side of the first row star-wheel 12 and the second planetary gear Case is combined for the scheme of platy structure with the first row carrier 11 and the second planet carrier 21, so effectively can be subtracted The axial dimension of few differential mechanism 100, so that the volume of differential mechanism 100 is less.
And for example, those skilled in the art can be by 22 partly overlapping side of the first row star-wheel 12 and the second planetary gear The scheme that case is accommodated in planetary gear and planet carrier in installing space is combined, and so effectively not only can be reduced The axial dimension of differential mechanism 100, and planetary gear and planet carrier can also be made to be hidden in installing space and avoid Sudden and violent leakage is damaged outside, so as to increased service life, reduces maintenance cost.
For another example, those skilled in the art can be by the revolution axis of the first row star-wheel 12 and second planetary gear 22 The scheme of revolution dead in line and the revolution-radius and the revolution-radius of the second planetary gear 22 of the first row star-wheel 12 Identical scheme is combined, so that the structure of differential mechanism 100 is compacter, it is less to take volume, more just In arrangement.
For another example, input unit 3 can be configured to annular input end gear and be enclosed within the first tooth by those skilled in the art The side of retarder driven gearwheel based on the scheme and input end gear 3 of the outer peripheral face of circle 13 and the second gear ring 23 Case is combined, and thus differential mechanism 100 can better profit from the space that master subtracts driven gear inner hollow, Preferably space availability ratio is realized, the arrangement of differential assembly is very easy to and to weight size Restriction, and by by input unit 3 be directly disposed as annular main reducing gear driven gear, without independent Main reducing gear driven gear is set again, the parts of whole power-driven system thus not only can be reduced, is dropped Low cost, but also make the structure of differential mechanism 100 more compact, compact.
For another example, input unit 3 can be configured to annular input end gear and input end gear by those skilled in the art On the one hand the 3 scheme combinations for surrounding and covering gap, so cause the structure relative compact of differential mechanism 100, And gap is covered by input end gear 3, moreover it is possible to the installing space for limiting the housing of two planet circular systems Relatively more closed, inside the installing space that adequately protects part, improves its service life.
However, it is to be understood that above-mentioned illustrating is only illustrative, for technical scheme and/ Or the combination of technical characteristic, those skilled in the art can carry out independent assortment in the case where not conflicting, and And the scheme after combining possesses more superior technique effect, the present invention has only made above-mentioned multiple examples briefly Bright, here is no longer exhaustive one by one.
Further it will be understood that the technical scheme after combinations thereof equally falls into protection scope of the present invention Within.
Generally speaking, differential mechanism 100 according to embodiments of the present invention, can effective save space, and reduce Weight, specifically, for this planet gear type differential mechanism 100 compares traditional bevel gear differential, Weight can reduce about 30%, while axial dimension about reduces 70%, can not only reduce bearing Frictional force, and the moment of torsion distribution of left and right wheelses can be realized, make the load of differential mechanism 100 be distributed more adduction Reason, more preferably, additionally due to adopting roller gear, transmission efficiency is also increased 100 rigidity of differential mechanism, Traditional Bevel Gear Drive efficiency of such as 6 class precisions and 7 class precisions about 0.97～0.98, and 6 grades are smart The column gear transmission efficiency of degree and 7 class precisions about 0.98～0.99, in addition using roller gear, also drops The low operating noise of differential mechanism 100, while reducing caloric value, substantially increases the longevity of differential mechanism 100 Life.In short, differential mechanism 100 according to embodiments of the present invention have lightweight, small size, low cost, Many advantages, such as transmission efficiency, noise are low, heating is little, the life-span is high.
Simultaneously as differential mechanism 100 according to embodiments of the present invention can save sun gear, and save the sun Wheel can have the advantage that：
Analyze from mechanics, cancel sun gear but differential is realized using gear ring, because the number of teeth of gear ring is compared It is more that sun gear can be arranged, while pitch circle is larger (when pitch circle refers to meshed transmission gear at node Tangent a pair of circles), such that it is able to distributed load more in a balanced way and torque is born, this is to differential mechanism 100 The raising in life-span is good.No sun gear, can preferably realize the lubrication of differential mechanism 100 simultaneously And cooling, that is to say, that can be formed inside sun gear, therefore planetary gear cavity due to eliminating, and tooth Circle engages the relation (sun gear belongs to external toothing with planetary gear) for being belonging to internal messing with planetary gear, in gear ring Lubricating oil can be stored, thus cooling and lubricant effect can be greatly improved.Further, since cancel sun gear, Parts are reduced, the quality and cost of differential mechanism 100 is reduced, makes differential mechanism 100 become more small-sized Change, lightweight.
And for the power-driven system 1000 with differential mechanism 100 according to embodiments of the present invention, Which mainly has spatially and in type of drive obvious advantage, by taking space advantage as an example, the power Drive system 1000 is particularly well-suited to new energy vehicle, as the power assembly of new energy vehicle is typically arranged In enging cabin, power assembly not only have variator, electromotor, while also have at least one motor, Due to enging cabin limited space, therefore can using compact differential mechanism 100 according to embodiments of the present invention Advantage is spatially obtained, arrangement is easily facilitated.And for example, as a example by the advantage for going up in a driving manner, due to root Greatly reduce according to the axial dimension of the differential mechanism 100 of the embodiment of the present invention, therefore axial space more preferably arranged, And there are differential mechanism 100 two gear rings can be better achieved and two motors as clutch end Power connector (as mentioned above that motor is connected by the external tooth of gear ring), and this is in traditional circular cone differential mechanism On be difficult to.
Vehicle 10000 according to embodiments of the present invention is briefly described below, as shown in figure 23, the vehicle 10000 Including the power-driven system 1000 in above-described embodiment, the power-driven system 1000 can be used for forerunner, Rear-guard is may naturally be used for, the present invention is not particularly limited to this.It should be appreciated that according to the present invention Other of the vehicle 10000 of embodiment construct such as brakes, driving system, steering etc. Prior art, and be well known to those skilled in the art, therefore no longer repeat one by one here.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specific example ", or " some examples " etc. description mean with reference to the embodiment or example describe it is concrete Feature, structure, material or feature are contained at least one embodiment or example of the present invention.In this theory In bright book, identical embodiment or example are necessarily directed to the schematic representation of above-mentioned term.And, The specific features of description, structure, material or feature can be in one or more any embodiment or examples In combine in an appropriate manner.Additionally, those skilled in the art can be by the difference described in this specification Embodiment or example are engaged and are combined.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment It is exemplary, it is impossible to be interpreted as limitation of the present invention, one of ordinary skill in the art is the present invention's In the range of above-described embodiment can be changed, change, replace and modification.

Claims (28)

1. a kind of power-driven system, it is characterised in that include：
Differential mechanism, the differential mechanism by the first row carrier, the first row star-wheel, the first gear ring, the second planet carrier, Second planetary gear, the second gear ring and input unit composition, the first row star-wheel are connected with the first row carrier, The first row star-wheel is engaged with first gear ring, second planetary gear and the second planet carrier phase Even, second planetary gear engage with second gear ring and second planetary gear also with the first planet Wheel engagement, wherein first gear ring and second gear ring constitute two power outputs of the differential mechanism End, the input unit, the first row carrier and second planet carrier be coaxially arranged and the importation Do not link with the first row carrier and second planet carrier；
Variator and electromotor, the variator are connected with the electromotor and the differential mechanism respectively, and institute State electromotor the power of generation can be exported to the input unit after the variator；And
First motor generator and the second motor generator, first motor generator and first gear ring Link and second motor generator is linked with second gear ring.
2. power-driven system according to claim 1, it is characterised in that the first row star-wheel Partly overlapped with second planetary gear in the axial direction.
3. power-driven system according to claim 2, it is characterised in that the first row star-wheel Including：First teeth portion and the second teeth portion, second planetary gear include：3rd teeth portion and the 4th teeth portion, institute State the first teeth portion to engage with first gear ring, second teeth portion is with the 3rd teeth portion on the axial direction Correspondence is overlapped and is engaged and coordinates, and the 4th teeth portion is engaged with second gear ring.
4. power-driven system according to claim 1, it is characterised in that the first row star-wheel Roller gear is with the second planetary gear.
5. power-driven system according to claim 1, it is characterised in that first gear ring and Second gear ring is symmetrical arranged, and each in first gear ring and second gear ring includes：
Body panels portion and be arranged on the body panels portion periphery edge annular side wall portion, the annular side Multiple teeth are provided with the internal face of wall portion, are limited between the body panels portion and the annular side wall portion The cavity of cavity, the cavity of first gear ring and second gear ring toward each other to constitute installing space, The first row carrier and the first row star-wheel and second planet carrier and second planetary gear receipts It is contained in the installing space.
6. power-driven system according to claim 1, it is characterised in that the input cage structure For input end gear, the input end gear is configured to annular and is set in first gear ring and described second Gear ring outer surface.
7. power-driven system according to claim 6, it is characterised in that first gear ring with Gap is provided between second gear ring, the input end gear surround and covers the gap.
8. power-driven system according to claim 1, it is characterised in that also include：Centre connects Binding structure, the intermediate connection structure is for being connected to institute by the first row carrier, second planet carrier Input unit is stated, the intermediate connection structure includes：First connecting bracket and the second connecting bracket, described first Connecting bracket is used to connect the first row carrier and the input unit, and second connecting bracket is used to connect Second planet carrier and the input unit, wherein in first connecting bracket and second connecting bracket Each include：
Central body portion and extension arm, the extension arm are multiple and are arranged on the central body portion On outer peripheral face, arm is centered on the central body portion and radially distributes for the plurality of extension, wherein The arm that extends is for being connected with the input unit.
9. power-driven system according to claim 1, it is characterised in that each described the first row Star-wheel has a first planet wheel shaft, two ends of the first planet wheel shaft respectively with the first row Carrier is connected with second planet carrier, and each described second planetary gear has second planet wheel spindle, institute Two ends for stating the second planet wheel spindle are connected with the first row carrier and second planet carrier respectively.
10. power-driven system according to claim 1, it is characterised in that the first row star-wheel Revolution-radius it is identical with the revolution-radius of second planetary gear.
11. power-driven systems according to claim 1, it is characterised in that the variator includes Power output shaft and multiple input shafts；
One of input shaft in the plurality of input shaft be arranged to optionally with the power output Axle links, and the power output shaft is arranged to also link with the input unit.
12. power-driven systems according to claim 11, it is characterised in that the power output Axle overhead set is provided with empty set driven gear, and the empty set driven gear is joined with one of input shaft Dynamic, the power-driven system also includes lock unit, and it is defeated that the lock unit is arranged for the synchronous power Shaft and the empty set driven gear.
13. power-driven systems according to claim 11, it is characterised in that the power output Axle overhead set is provided with empty set driven gear and is fixedly installed fixed driven gear, the power drive line System also includes lock unit：It is driven with the empty set that the lock unit is arranged for the synchronous power output shaft Gear；
It is fixedly installed fixed driving gear on each described input shaft, the empty set driven gear and described solid Determine driven gear to engage with corresponding fixed driving gear respectively.
14. power-driven systems according to claim 11, it is characterised in that each described input Be fixedly installed multiple fixed driving gears on axle, the power output shaft overhead set be provided with multiple empty sets from Moving gear, the empty set driven gear are engaged with corresponding fixed driving gear, each described empty set driven tooth Wheel can be bonded to the power output shaft by the synchronization of corresponding gear lock unit.
15. power-driven systems according to claim 1, it is characterised in that the variator includes Power output shaft and multiple input shafts；
Each described input shaft is arranged to link with the power output shaft, and the power output shaft is arranged to also Link with the input unit.
16. power-driven systems according to claim 15, it is characterised in that the power output Multiple fixed driven gears are fixedly installed on axle, on each described input shaft, fixed driving tooth is fixedly installed Wheel, the fixed driven gear and the corresponding fixed driving gear engagement.
17. power-driven systems according to claim 1, it is characterised in that the variator includes First input shaft and the second input shaft, second input shaft are set on first input shaft, described dynamic Power-driven system also includes electromotor, the electromotor and first input shaft, second input shaft it Between by double clutch be connected.
18. power-driven systems according to claim 11, it is characterised in that the power output Power output shaft output gear is provided with axle, the power output shaft output gear is engaged with the input unit Transmission.
19. power-driven systems according to claim 18, it is characterised in that the power output Axle output gear constitutes main reducing gear with the input unit, wherein the power output shaft output gear is configured to Main reducing gear driving gear, the input unit are configured to main reducing gear driven gear.
20. power-driven systems for vehicle according to claim 1, it is characterised in that described The first external tooth is provided with the outer peripheral face of the first gear ring, is provided with outside second on the outer peripheral face of second gear ring Tooth, first motor generator are linked with first external tooth, second motor generator and described Two external tooths link.
21. power-driven systems according to claim 1, it is characterised in that the variator includes：
Multiple input shafts and multiple power output shafts, each described power output shaft is arranged to can be by from described The power output of electromotor is to the input unit.
22. power-driven systems according to claim 21, it is characterised in that the variator is also Including：
Reverse output gear and reverse idler gear, the reverse output gear are engaged with the input unit, institute State reverse idler gear to engage with the reverse output gear, the reverse idler gear empty set is the plurality of Can be connect on one of power output shaft in power output shaft and by the synchronization of reverse gear synchronizer It is bonded to one of power output shaft.
23. power-driven systems according to claim 22, it is characterised in that it is described one of them Power output shaft overhead set is provided with power output shaft empty set output gear, the power output shaft empty set output Gear shares the reverse gear synchronizer with the reverse idler gear, fixed on remaining each power output shaft It is provided with power output shaft and fixes output gear, it is defeated with the power that the power output shaft fixes output gear Shaft empty set output gear is engaged with the input unit respectively.
24. power-driven systems according to claim 1, it is characterised in that also include：3rd is electric Dynamic electromotor, the 3rd motor generator are connected with the variator, and the 3rd motor generator can be by The power of generation is exported to the input unit by the variator.
25. power-driven systems according to claim 1, it is characterised in that described first electronic Motor is with second motor generator with regard to the symmetrical distribution of the differential mechanism.
26. power-driven systems according to claim 1, it is characterised in that the variator includes First input shaft, the second input shaft and the 3rd input shaft, the 3rd input shaft are set in second input On axle, second input shaft is set on first input shaft, and the electromotor and described first is input into It is connected by three clutches between axle, second input shaft and the 3rd input shaft.
27. power-driven systems according to claim 1, it is characterised in that first gear ring with The near front wheel links, and second gear ring is linked with off-front wheel；
The power-driven system also includes：
4th motor generator and the 5th motor generator, the 4th motor generator are linked with left rear wheel, 5th motor generator is linked with off hind wheel；And
Anti-skidding lock unit, after the anti-skidding lock unit is arranged to the optionally synchronous left rear wheel and the right side Wheel, so that the left rear wheel and the off hind wheel synchronous rotary.
28. a kind of vehicles, it is characterised in that include dynamic according to any one of claim 1-27 Power-driven system.
CN201510626385.7A 2015-09-25 2015-09-25 Power driving system and vehicle with same Active CN106553535B (en)

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CN106553536A (en) * 2015-09-25 2017-04-05 比亚迪股份有限公司 Power-driven system and the vehicle with which
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CN109835155A (en) * 2018-04-19 2019-06-04 广州市新域动力技术有限公司 The automatic four-speed pure electric power assembly of astrolabe shift type
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