CN106553528A - Power-driven system and the vehicle with which - Google Patents

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；Power output shaft, power output shaft are arranged to link with input unit；Multiple input shafts, each input shaft are arranged to link with power output shaft；First motor generator, the first motor generator are linked with the one of input shaft in multiple input shafts.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 the driven gear (master subtract driven gear) of main reducing gear, planetary gear, centre wheel etc., planetary gear is arranged on the subplate of driven gear by square shaft, axle sleeve, 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 purpose of output torque.This differential mechanism eliminates the components such as original differential mechanism or so housing, planetary gear shaft, use square shaft instead and planetary gear is directly arranged on the subplate of driven gear of main reducing gear by axle sleeve, the number of parts of differential mechanism is effectively reduced, structure is simplified, is alleviated weight.

But, this differential mechanism make use of symmetrical expression bevel gear structure to realize differential between wheel, innovate just for the part of traditional symmetrical expression bevel differential, can not really solve excessive this differential design axial dimension, housing and bevel gear quality greatly 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 realizes differential function using planet differential principle, 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, first gear ring, second planet carrier, second planetary gear, second gear ring and input unit composition, the first row star-wheel is connected with the first row carrier, the first row star-wheel is engaged with first gear ring, second planetary gear is connected with second planet carrier, second planetary gear is engaged with second gear ring and second planetary gear is also engaged with the first row star-wheel, wherein described first gear ring and second gear ring constitute two clutch ends of the differential mechanism, the input unit, the first row carrier and second planet carrier is coaxially arranged and the input unit is linked with the first row carrier and second planet carrier respectively；Power output shaft, the power output shaft are arranged to link with the input unit；Multiple input shafts, each described input shaft are arranged to link with the power output shaft；First motor generator, first motor generator are linked with the one of input shaft in the plurality of input shaft.

The differential mechanism of power-driven system according to embodiments of the present invention realizes differential function using planet differential principle, 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, power-driven system also include：Electromotor, the electromotor are arranged to be selectively engageable at least one of the plurality of input shaft.

Some embodiments of the invention, are provided with power output shaft output gear, the power output shaft output gear and the input unit engaged transmission on the power output shaft.

Some embodiments of the invention, the power output shaft output gear constitute 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 is configured to main reducing gear driven gear.

Some embodiments of the invention, pass through shift gear auxiliary driving between the input shaft and the power output shaft.

Some embodiments of the invention, are fixedly installed multiple fixed driven gears on the power output shaft, fixed driving gear, the fixed driven gear and the corresponding fixed driving gear engagement are fixedly installed on each described input shaft.

Some embodiments of the invention, the plurality of input shaft include：

First input shaft and the second input shaft, second input shaft are set on first input shaft, and the fixed driving gear includes：The first fixation driving gear being fixed on the first input shaft and the second fixation driving gear being fixed on the second input shaft, the fixed driven gear include：The first fixation driven gear being fixed on the power output shaft and second fixes driven gear, and the first fixation driven gear is engaged with the described first fixation driving gear, and the second fixation driven gear is engaged with the described second fixation driving gear.

Some embodiments of the invention, power-driven system also include：

Electromotor；And

Double clutch, the double clutch include：First junction surface, the second junction surface and the 3rd junction surface, 3rd junction surface is arranged to be selectively engageable at least one of first junction surface and described second junction surface, the electromotor is connected with the 3rd junction surface, first input shaft is connected with first junction surface, and second input shaft is connected with second junction surface.

Some embodiments of the invention, first motor generator fix driving gear or second fixation driving gear linkage with described first by gear structure.

Some embodiments of the invention, the first row star-wheel are partly overlapped in the axial direction with second planetary gear.

Some embodiments of the invention, power-driven system also include：Second motor generator and the 3rd motor generator, second motor generator are linked with first gear ring, and the 3rd motor generator is linked with second gear ring.

Some embodiments of the invention, the first external tooth is provided with the outer peripheral face of first gear ring, the second external tooth is provided with the outer peripheral face of second gear ring, second motor generator is linked with first external tooth, and the 3rd motor generator is linked with second external tooth.

Some embodiments of the invention, the variator includes the first input shaft, the second input shaft and the 3rd input shaft, 3rd input shaft is set on second input shaft, second input shaft is set on first input shaft, is connected by three clutches between the electromotor and first input shaft, second input shaft and the 3rd input shaft.

Some embodiments of the invention, the first row star-wheel include：First teeth portion and the second teeth portion, second planetary gear include：3rd teeth portion and the 4th teeth portion, first teeth portion are engaged with first gear ring, and second teeth portion corresponding overlap and engagement cooperation on the axial direction with the 3rd teeth portion, the 4th 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 are symmetrical structure, 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, multiple teeth are provided with the internal face of the annular side wall portion, cavity is limited between the body panels portion and the annular side wall portion, 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 are accommodated in the installing space cavity of the cavity of first gear ring and second gear ring.

Some embodiments of the invention, the input unit are configured to input end gear, and the input end gear is configured to annular and is set in first gear ring and the second gear ring outer surface.

Some embodiments of the invention, are provided with gap between first gear ring and second gear ring, the input end gear surround and covers the gap.

Some embodiments of the invention, power-driven system also include：Intermediate connection structure, for the first row carrier, second planet carrier are connected to the input unit, the intermediate connection structure includes the intermediate connection structure：First connecting bracket and the second connecting bracket, first connecting bracket is used to connect the first row carrier and the input unit, second connecting bracket is used to connect second planet carrier and the input unit, wherein each in first connecting bracket and second connecting bracket includes：

Central body portion and extension arm, the extension arm is multiple and is arranged on the outer peripheral face in the central body portion, it is the plurality of to extend that arm is centered on the central body portion and radially distributes, wherein the adjutage portion is for being connected with the input unit.

Some embodiments of the invention, each described the first row star-wheel is configured with a first planet wheel shaft, two ends of the first planet wheel shaft are connected with the first row carrier and second planet carrier respectively, each described second planetary gear is configured with second planet wheel spindle, and two ends of second planet wheel spindle are 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 are identical with the revolution-radius of second planetary gear.

Some embodiments of the invention, first gear ring are linked with the near front wheel, 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, and the 5th motor generator is linked with off hind wheel；And

Anti-skidding lock unit, the anti-skidding lock unit are arranged to the optionally synchronous left rear wheel and off hind 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 the second gear ring etc. not shown in which；

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 first gear ring or the axonometric chart of the second gear ring according to other embodiments of the invention；

Figure 10 is the schematic diagram of power-driven system according to an embodiment of the invention；

Figure 11 is the schematic diagram of power-driven system in accordance with another embodiment of the present invention；

Figure 12 is the schematic diagram of the power-driven system 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 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 same or similar label represents same or similar element or the element with same or like function from start to finish.It is exemplary below with reference to the embodiment of Description of Drawings, it is intended to for explaining the present invention, and be not considered as limiting the invention.

In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " horizontal ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", " clockwise ", the orientation or position relationship of instructions such as " counterclockwise " is based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than indicate or imply that the device or element of indication must have specific orientation, with specific azimuth configuration and operation, therefore it is 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.In describing the invention, " multiple " are meant that at least two, such as two, three etc., unless otherwise expressly limited specifically.

In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixation " 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；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be connection or the interaction relationship of two elements of two element internals.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.

In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can include the first and second feature directly contacts, it is also possible to be not directly contact including the first and second features but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " or fisrt feature level height is merely representative of higher than second feature including fisrt feature directly over second feature and oblique upper.Fisrt feature second feature " under ", " lower section " and " below " or fisrt feature level height is merely representative of less than second feature including fisrt feature immediately below second feature and obliquely downward.

Describe power-driven system 1000 according to embodiments of the present invention below with reference to accompanying drawings in detail, the power-driven system 1000 is can be applicable in vehicle.

As shown in Figure 10-Figure 15, power-driven system 1000 according to some embodiments of the invention mainly includes differential mechanism 100, variator 104 and the first motor generator 401, and variator 104 is connected between differential mechanism 100 and the first motor generator 401.

The concrete structure of differential mechanism 100 is described in detail according to diagram embodiment first below, for other constructions of power-driven system 1000 will be described after differential mechanism 100 being discussed in detail and constructs.

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 differential mechanism 100 can be such that driving wheels travel in turn inside diameter or when uneven road surface is travelled with different angular velocity rollings, 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 is made up of 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.

With reference to the embodiment of Fig. 1 and Fig. 2, the first row carrier 11 and the second planet carrier 21 are it is so structured that circular platy structure, so can reduce the axial dimension of differential mechanism 100 to a certain extent.In certain embodiments, the first row carrier 11 and the second planet carrier 21 can be split-type structural, as independent widget molding is relatively easy, therefore the first row carrier 11 and the second planet carrier 21 individually processs can simplify 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 has a first planet wheel shaft 14, two ends of first planet wheel shaft 14 are rotatably supported in the first row carrier 11 and the second planet carrier 21 respectively, two ends such as first planet wheel shaft 14 can be rotatably supported in by bearing in the axis hole correspond to each other on the first row carrier 11 and the second planet carrier 21, and now the first row star-wheel 12 is securable on corresponding first planet wheel shaft 14.Certainly, two ends of first planet wheel shaft 14 can also be fixedly connected with the first row carrier 11 and the second planet carrier 21, two ends of such as first planet wheel shaft 14 are welded and fixed with the axis hole that corresponds to each other in the first row carrier 11 and the second planet carrier 21 respectively, now the first row star-wheel 12 is rotatably sleeved on corresponding first planet wheel shaft 14, and for example the first row star-wheel 12 can be rotatably mounted around by bearing on first planet wheel shaft 14.Thus, can realize connecting the purpose of the first row carrier 11 and the second planet carrier 21 by first planet wheel shaft 14, so that the first row carrier 11 and the second planet carrier 21 keep synchronized, in the same direction motion (i.e. the first row carrier 11 and the second planet carrier 21 link), and adopt this connected mode, the first row carrier 11 and the second planet carrier 21 can carry out supporting/fixing to first planet wheel shaft 14 well, prevent first planet wheel shaft 14 to be disconnected with single planet carrier and cause differential mechanism 100 to fail.Referring to shown in Fig. 1 and Fig. 2, the first row star-wheel 12 is engaged with the first gear ring 13, concretely internal messing form, i.e., the first row star-wheel 12 is located at the inner side of the first gear ring 13 and is engaged with the tooth on the first gear ring 13.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 it is a kind of preferred embodiment, the first row star-wheel 12 can be that interval angles are 120 ° between three, and two the first row star-wheels 12 of arbitrary neighborhood.

Such as Fig. 1-Fig. 2 and with reference to shown in Fig. 6, 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, two ends such as the second planet wheel spindle 24 can be rotatably supported in by bearing in the axis hole correspond to each other on the first row carrier 11 and the second planet carrier 21, and 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 fixedly connected with the first row carrier 11 and the second planet carrier 21, two ends of such as the second planet wheel spindle 24 are welded and fixed with the axis hole that corresponds to each other in the first row carrier 11 and the second planet carrier 21 respectively, now the second planetary gear 22 is rotatably sleeved on corresponding second planet wheel spindle 24, and for example the second planetary gear 22 can be rotatably mounted around by bearing on the second planet wheel spindle 24.Thus, can realize connecting the purpose of the first row carrier 11 and the second planet carrier 21 by the second planet wheel spindle 24, so that the first row carrier 11 and the second planet carrier 21 keep synchronized, in the same direction motion, and adopt this connected mode, the first row carrier 11 and the second planet carrier 21 can carry out supporting/fixing to the second planet wheel spindle 24 well, prevent the second planet wheel spindle 24 to be disconnected with single planet carrier and cause differential mechanism 100 to fail.

In addition, in other embodiments of the present invention, in order to keep the first row carrier 11 and the second planet carrier 21 move at the same speed, in the same direction, not only can realize by the way of above by first planet wheel shaft 14 and/or the second planet wheel spindle 24, the first row carrier 11 can also be directly fixedly connected with the second planet carrier 21 by intermediate connection structure 6 simultaneously, or while be connected the first row carrier 11 and the second planet carrier 21 with intermediate connection structure 6 using planet wheel spindle, and will be discussed in more detail below with regard to the specific configuration of intermediate connection structure 6.

Referring to shown in Fig. 1 and Fig. 2, the second planetary gear 22 is engaged with the second gear ring 23, concretely internal messing form, i.e., the second planetary gear 22 is located at the inner side of the second gear ring 23 and is engaged with the tooth on the second gear ring 23.Second planetary gear 22 is preferably several, and circumferentially equidistantly distributed on the inside of the second gear ring 23, for example, as it is a kind of preferred embodiment, the second planetary gear 22 can be that interval angles are 120 ° between three, and two the second planetary gears 22 of arbitrary neighborhood.

Wherein, it should be noted that, Fig. 4 is the plan view sketch of the differential mechanism 100 according to the embodiment of the present invention, which schematically illustrates the meshing relation of the meshing relation and the first row star-wheel 12 and the first gear ring 13, the second planetary gear 22 and the second gear ring 23 between the first row star-wheel 12 and the second planetary gear 22, as Fig. 4 is plane graph, and also show above-mentioned three kinds of meshing relations, therefore the relative position relation of each part 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 multiple the first row star-wheels 12 and multiple second planetary gears 22 are respectively correspondingly engaged.For example, such as Fig. 1, shown in Fig. 2 and Fig. 5, the first row star-wheel 12 and the second planetary gear 22 are three, then first the first row star-wheel 12 can be engaged with corresponding first the second planetary gear 22, second the first row star-wheel 12 can be engaged with corresponding second the second planetary gear 22, 3rd the first row star-wheel 12 can be engaged with corresponding 3rd the second planetary gear 22, so there is multigroup the first row star-wheel 12 being engaged with each other and the second planetary gear 22, when differential mechanism 100 transmits power, power between the first row star-wheel 12 and the second planetary gear 22 of multigroup engagement that corresponds to each other is transmitted and more will be stablized, it is reliable.

Wherein, with reference to the embodiment of Fig. 4, the revolution axes O of the first row star-wheel 12 is overlapped with the revolution axes O of the second planetary gear 22, and the first row star-wheel 12 is identical with the revolution-radius of the second planetary gear 22 (i.e. the distance of the central axis distance revolution axes O of planetary gear).

Especially, as shown in Fig. 1-Fig. 2, Fig. 4-Fig. 7, the first row star-wheel 12 engages cooperation with the second planetary gear 22.In other words, for the first row star-wheel 12, which is not only engaged with the first gear ring 13, while also engaging with the second planetary gear 22, for the second planetary gear 22, which is not only engaged with the second gear ring 23, while also engaging with the first row star-wheel 12.

As Figure 1-Figure 4, first gear ring 13 and the second gear ring 23 may be constructed two clutch ends of differential mechanism 100, the first row carrier 11 and the second planet carrier 21 then correspond to the power intake for constituting differential mechanism 100, for example in one embodiment of the invention, the first row carrier 11, the second planet carrier 21 are linked with input unit 3, in other words, the kinestate of input unit 3, the first row carrier 11 and the second planet carrier 21 is identical (i.e. synchronized, motion in the same direction).Used as preferred embodiment, input unit 3, the first row carrier 11 and the second planet carrier 21 are coaxially arranged.The power of so external power supply output can be input into from input unit 3, can be exported from the first gear ring 13 and the second gear ring 23 respectively after the differential action of differential mechanism 100.

It is applied between wheel, as a example by differential, briefly describe the operation principle of differential mechanism 100 by the differential mechanism 100 below, now the first gear ring 13 can be connected with left half axle, left half axle can be connected with left side wheel, second gear ring 23 can be connected with right axle shaft, right axle shaft can be connected with right side wheels, the power source power that such as electromotor and/or motor are exported can be exported after the decelerating effect of main reducing gear to input unit 3, and input unit 3 drives 21 synchronous rotary of the first row 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, now differential mechanism 100 does not play differential action, 21 synchronized, rotating in same direction of the first row carrier 11 and the second planet carrier, 23 synchronized, rotating in same direction of first gear ring 13 and the second gear ring, the first row star-wheel 12 and the second planetary gear 22 revolution, not rotations.If now vehicle traveling is travelled on irregular road surface or turn inside diameter, rotating speed is different in theory with right side wheels for left side wheel, the rotating speed of the first gear ring 13 and the second gear ring 23 is also different, there is speed discrepancy, now the first row star-wheel 12 and the second planetary gear 22 also rotation while revolution, the speedup caused from the change of team in the first gear ring 13 and the second gear ring 23 of the first row star-wheel 12 and the second planetary gear 22, another deceleration, the speed discrepancy of the gear ring of speedup and the gear ring for slowing down is the speed discrepancy of left and right wheelses, so as to realize differential action.

To sum up, differential mechanism 100 according to embodiments of the present invention utilizes planet differential principle, and in structure and type of attachment, space availability ratio is higher, and axial dimension is less, and more advantageous in production and fit on.Such version can not only avoid the dimensional defects that angular wheel is axially and radially gone up, the space that master subtracts driven gear inner hollow can additionally be better profited from, realize preferably space availability ratio, it is very easy to the arrangement of 100 assembly of differential mechanism and the restriction to weight size, simultaneously also possesses 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 is for symmetrical expression bevel differential with more practicality.

Meshing relation to first planet wheel 12 with the second planetary gear 22 is described in detail in conjunction with specific embodiments below.

Reference picture 1- Fig. 2 and combine Fig. 6-Fig. 7, the first row star-wheel 12 is partly overlapped on axial direction (left and right directions in Fig. 6-Fig. 7) with the second planetary gear 22, that is, the first row star-wheel 12 is only overlapped with the second planetary gear 22, stagger other part, the part that the first row star-wheel 12 and the second planetary gear 22 are overlapped 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 the first teeth portion 151 and the second teeth portion 152 (with Fig. 7, K2 dotted lines are as demarcation line), second planetary gear 22 can include the 3rd teeth portion 153 and the 4th teeth portion 154 (with Fig. 7, K1 dotted lines are as demarcation line), second teeth portion 152 and the 3rd teeth portion 153 constitute lap, that is the second teeth portion 152 is with the 3rd teeth portion 153 overlap corresponding in the axial direction and engages cooperation, first teeth portion 151 and the 4th teeth portion 154 are staggered in the axial direction and are engaged with each self-corresponding gear ring, i.e. the first teeth portion 151 is engaged with the first gear ring 13, 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, the 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, and 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, compare conventional symmetrical formula bevel differential, 100 structure of differential mechanism using roller gear is compacter, specifically, in structure and type of attachment, space availability ratio is higher for which, and axial dimension is less, and more advantageous in production and fit on.

The structure of the first gear ring 13 and the second gear ring 23 is described in detail 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, and in other words, the first gear ring 13 and the second gear ring 23 are symmetrical arranged, and can so increase the versatility of gear ring, reduces cost.

Specifically, as Figure 1-Figure 2, each in the first gear ring 13 and the second gear ring 23 includes：Body panels portion 161 and be arranged on body panels portion 161 periphery edge annular side wall portion 162, body panels portion 161 and annular side wall portion 162 can be integrally formed part.Multiple gear teeth are provided with the internal face of annular side wall portion 162，Cavity A1 is limited between body panels portion 161 and annular side wall portion 162、A2，Cavity A1 is limited between the body panels portion 161 of the first gear ring 13 and annular side wall portion 162，Cavity A2 is limited between the body panels portion 161 of the second gear ring 23 and annular side wall portion 162 (such as Fig. 4)，The cavity A2 in cavity A1 and the second gear ring 23 in first gear ring 13 is toward each other with composition 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 the second planetary gear 22 are accommodated in installing space A，So cause the structure of differential mechanism 100 relatively more compact，Take volume less，It is easier to arrangement，First gear ring 13 and the second gear ring 23 serve as the function of external shell simultaneously，Can protect and be accommodated in planet carrier therein and planetary gear，Improve the life-span.Additionally, the installing space A limited by the first gear ring 13 and the second gear ring 23 is comparatively closed, outside debris are not easily accessible in installing space A and affect moving component, 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 shown in Figure 1-Figure 3; input end gear 3 is configured to annular (tooth of the input end gear 3 is formed on outer peripheral face) and is set in the outer surface of the first gear ring 13 and the second gear ring 23; it is understandable that; the internal diameter size of input end gear 3 can be more than the external diameter of the first gear ring 13 and the second gear ring 23; so by input end gear 3 to be enclosed within the outside of the first gear ring 13 and the second gear ring 23; so that the part positioned at two gear ring inners is not exposed from coming, the part of gear ring inner is protected.

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, that is to say, that 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.To those skilled in the art，The size that the clearance D is determined to a certain extent due to the width of the first row star-wheel 12 and the mate of the second planetary gear 22 is (in addition，The thickness for extending arm 63 can also determine the clearance D，This will be described hereinafter，Here first only illustrate so that the width of the mate of two planetary gears 22 determines clearance D as an example)，I.e. the first row star-wheel 12 can be equal with the minima of the clearance D with the width of the mate of the second planetary gear 22，Therefore by the width of control 22 mate of the first row star-wheel 12 and the second planetary gear，Can be with the size of the indirect control clearance D，To those skilled in the art，On the premise of service life that the first row star-wheel 12 and the second planetary gear 22 are capable of stable delivery power and the first row star-wheel 12 and the second planetary gear 22 is ensured，The relative narrower that the width of the first row star-wheel 12 and the mate of the second planetary gear 22 can be arranged，The clearance D can be effectively reduced so，So that the axial dimension of differential mechanism 100 is less、It is more compact，It is easy to arrangement.

Further, input end gear 3 surround and covers the clearance D.Thus, so that the closure of installing space A is more preferable, outside debris are more difficult to enter in installing space A and affect moving component, further ensure the steady operation of differential mechanism 100, while the axial space and radial space of differential mechanism at least can also be saved to a certain extent.

Additionally, conduct is preferred embodiment, retarder driven gearwheel based on input end gear 3.Thus, it is possible to better profit from the space that master subtracts driven gear inner hollow, preferably space availability ratio is realized, the arrangement of 100 assembly of differential mechanism and the restriction to weight size is very easy to.

It should be noted that the clearance D of above-mentioned Fig. 4 (with reference to Fig. 1-Fig. 2) refers to the distance between annular side wall portion 162 of annular side wall portion 162 and the second gear ring 23 of the first gear ring 13.For example, see the embodiment of Fig. 1, Fig. 2 and Fig. 4, the first gear ring 13 and the second gear ring 23 all include body panels portion 161 and annular side wall portion 162.

And in other embodiments of the present invention, such as referring in the embodiment of Fig. 8 and Fig. 9, each in first gear ring 13 and the second gear ring 23 still further comprises annular flange portion 163, direction of the annular flange portion 163 from the end of annular side wall portion 162 away from body panels portion 161 extends, in the embodiment in fig. 8, the internal diameter of annular flange portion 163 can be generally equalized with the external diameter of annular side wall portion 162, and such annular flange portion 163 is diametrically equivalent to outwardly annular side wall portion 162 (i.e. the outer peripheral face of the first gear ring 13 or the second gear ring 23).And in the embodiment in fig. 9,163 external diameter of annular flange portion can be generally equalized with the external diameter of annular side wall portion 162, and the internal diameter of annular flange portion 163 can be more than the internal diameter of annular side wall portion 162, 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, the clearance D between two gear ring refers to the gap between the annular side wall portion 162 of two gear rings.And the gear ring structure in Fig. 8 and Fig. 9 embodiments, the clearance D between two gear ring refers to the gap between the annular flange portion 163 of two gear rings.

For the clearance D, the engaging width of two planetary gears mentioned above can determine the size of clearance D to a certain extent, and at the same time, the thickness for extending arm 63 also determines the size of clearance D to a certain extent.Specifically, when the engaging width of two planetary gears is equal with the thickness for extending arm 63, the big I of the clearance D is generally equalized with the thickness of the engaging width of two planetary gears or extension arm 63.And when the thickness for extending arm 63 is more than the engaging width of two planetary gears, the big I of the clearance D is generally equalized with the thickness for extending arm 63.And when the thickness for extending arm 63 is less than the engaging width of two planetary gears, 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 is for the first row carrier 11, the second planet carrier 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 linkages.In addition, intermediate connection structure 6 can also be fixedly connected with the first row carrier 11, the second planet carrier 21 respectively, and the input unit 3 is fixed on the outer surface of intermediate connection structure 6, first planet frame 11, the second planet carrier 21 and 3 coaxial linkage of input unit can be equally enabled.

For the specific configuration of intermediate connection structure 6, The present invention gives a kind of feasible embodiment, this intermediate connection structure 6 for being not offered as or implying the present invention can only be using the structure in the embodiment certainly.That is, the intermediate connection structure 6 that will be introduced in example below is only a kind of feasible embodiment, is not that the one kind to the scope of the present invention is limited.

Specifically, referring to shown in Fig. 1 and Fig. 2, input end gear 3 of the input unit 3 in the embodiment for annular, intermediate connection structure 6 includes the first connecting bracket 61 and the second connecting bracket 62, first connecting bracket 61 is used to connect the first row carrier 11 and input unit 3 (i.e. input end gear 3), second connecting bracket 62 is 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 and the structure of the second connecting bracket 62 with identical, and can may comprise each：Central body portion 64 and extension arm 63 (with reference to Fig. 5), wherein the central body portion of the central body portion of the first connecting bracket 61 and the second connecting bracket 62 can be 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.Arm 63 is centered on central body portion 64 and substantially radially distributes for multiple extensions, and in the example of hgure 5, it is three and equidistantly distributed to extend arm 63.Extend arm 63 for being connected with input unit 3, specifically, the outer end for extending arm 63 may extend at the inner peripheral surface of for example annular main reducing gear driven gear of input unit 3 and be fixed 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 adjacent two and extend between arm 63, as in the example of hgure 5, it is three to extend arm 63, this three extend arm 63 and limit three accommodating chambers (extend arm 63 per adjacent two and limit an accommodating chamber with the inner peripheral surface of input end gear 3), each accommodates the first row star-wheel 12 and the second planetary gear 22 that intracavity can arrange a pair of meshing, so cause the overall structure of differential mechanism 100 compacter, cause the center of gravity of differential mechanism 100 closer simultaneously or be located at center, substantially improve when differential mechanism 100 runs up due to eccentric or eccentric larger 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 can coaxially be connected with the first output shaft 41, and the second gear ring 23 can coaxially be connected with the second output shaft 42.As shown in Figure 2 and Figure 4, the first row carrier 11 is coaxially connected with the first row carrier axle 111 simultaneously, second planet carrier 21 is coaxially connected with the second planet carrier shaft 211, first output shaft 41 can be hollow axle and coaxially can be enclosed within the first row carrier axle 111 that second output shaft 42 can equally be hollow axle and coaxially be set on the second planet carrier shaft 211.Wherein, the first row carrier axle 111 is coaxial with the central body portion 64 of the first connecting bracket 61 fixed, and 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 each in the first 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, and below remaining structure to power-driven system 1000 has been described in detail.

Shown in reference picture 10- Figure 15, variator 104 can include multiple input shafts 101,102 and power output shaft 103.In certain embodiments, the power output shaft 103 of variator 104 can be one, but not limited to this.Power output shaft 103 is arranged to link with input unit 3, such as power output shaft output gear 110, power output shaft output gear 110 and 3 engaged transmission of input unit are provided with power output shaft 103.Used as preferred embodiment, power output shaft output gear 110 constitutes main reducing gear with input unit 3, and wherein power output shaft output gear 110 is configured to main reducing gear driving gear, and 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 is built in inside main reducing gear driven gear, differential mechanism 100 can be made to better profit from the inner space, facilitates the arrangement of whole power-driven system 1000.

Each input shaft is all provided with being set to and is linked with power output shaft 103, and in other words, as shown in Figure 10 and Figure 11, any one input shaft rotates then power output shaft 103 and also follows action or power output shaft 103 to rotate then these input shafts also action therewith.

As shown in Figure 10 and Figure 11, the first motor generator 401 is arranged to link with one of input shaft.Such as in the example of Figure 10, the first motor generator 401 is linked with the first input shaft 101.And in the example of fig. 11, the first motor generator 401 is linked with the second input shaft 102.

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, multiple fixed driven gear 107a, 107b are fixedly installed on power output shaft 103, fixed driving gear is fixedly installed on each input shaft (for example, 105) first fixes driving gear 106 and second fixes driving gear, and fixed driven gear is engaged with corresponding fixed driving gear.

Such as referring to the example of Figure 10-Figure 15, fixed driven gear 107a engages a pair of shift gear pairs of composition with fixed driving gear 105, and it is another to gear pair that fixed driven gear 107b engages composition with fixed driving gear 106.It is appreciated that, the transmission speed ratio of two pairs of gear pairs is different, therefore the variator 104 in the embodiment has the transmission gear of two not synchronized ratios, and the structure of such power-driven system 1000 is relatively easy, compact, and also disclosure satisfy that requirement of the normal vehicle operation to transmission speed ratio.

As shown in Figure 10-Figure 15, multiple input shafts include the first input shaft 101 and the second input shaft 102, first input shaft 101 can be solid shafting, second input shaft 102 can be hollow axle, second input shaft 102 is set on the first input shaft 101, as the second input shaft 102 is coaxially enclosed within the first input shaft 101, the axial length of the first input shaft 101 is more than the axial length of the second input shaft 102, and one end such as right-hand member of the first input shaft 101 can be internally extended from the second input shaft 102.

Each input shaft can only be fixedly installed a fixed driving gear, that is, fixed driving gear includes that the first fixation driving gear 106 and second fixes driving gear 105, first fixation driving gear 106 is fixedly installed on the first input shaft 101, and the second fixation driving gear 105 is fixedly installed on the second input shaft 102.Accordingly, fixed driven gear includes that the first fixation driven gear 107b and second fixes driven gear 107a, and the first fixation driven gear 107b is engaged with the first fixation driving gear 106, and the second fixation driven gear 107a is engaged with the second fixation driving gear 105.

Referring to the example of Figure 10, Figure 12-Figure 15, first motor generator 401 is linked with the first input shaft 101, as the first motor generator 401 is linked with the first fixation driving gear 106 by gear structure, concretely the first motor generator 401 is driven by gear 402, gear 403 and the first fixation driving gear 106, can obtain the transmission speed ratio needed for the first motor generator 401 by the number of teeth of reasonable design said gear.

And in the example of fig. 11, first motor generator 401 is linked with the second fixation driving gear 105 by gear structure, concretely the first motor generator 401 is driven by gear 402, gear 403, gear 404, gear 405 and the second fixation driving gear 105, its middle gear 404 and gear 405 can be fixed on same axle 406, can obtain the transmission speed ratio needed for the first motor generator 401 by the number of teeth of reasonable design said gear.

Further, power-driven system 1000 can also include electromotor 301, and electromotor 301 is arranged to optionally engage with least one of multiple input shafts, specifically, 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 clutch plates of double clutch 204,3rd bonding part 203 can be the housing of double clutch 204, at least one of two clutch plates are selectively engageable housing, that is, at least one of the first bonding part 201 and the second bonding part 202 can be selectively engaged the 3rd bonding part 203.Certainly, two clutch plates can also be all off with housing, i.e. the first bonding part 201 and the second bonding part 202 are off with the 3rd bonding part 203.

Referring to Figure 10-Figure 15, electromotor 301 is connected with the 3rd bonding part 203, and the first input shaft 101 is connected with the first bonding part 201, and 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 101, the second input shaft 102 by double clutch 204.

According to one embodiment of present invention, referring to shown in Figure 16-Figure 17 and with reference to shown in Fig. 1-Fig. 9, the second motor generator 501 is linked with the first gear ring 13, and the 3rd motor generator 503 is linked with the second gear ring 23.Further, the first external tooth 505 is provided with the outer peripheral face of the first gear ring 13, the first external tooth 505 is may be integrally formed on the outer peripheral face of the first gear ring 13.The second external tooth 506 is provided with the outer peripheral face of the second gear ring 23, the second external tooth 506 is may be integrally formed on the outer peripheral face of the second gear ring 23.Second motor generator 501 is linked with the first external tooth 505, and the 3rd motor generator 503 is linked with the second external tooth 506.

Further, gear 502 can be provided with the motor shaft of the second motor generator 501, gear 502 is engaged with the first external tooth 505, and gear 504 can be provided with the motor shaft of the 3rd motor generator 503, and gear 504 is engaged with the second external tooth 506.However, it will be understood that the linked manner of the second motor generator 501 and the first gear ring 13 and the 3rd motor generator 503 and the second gear ring 23 is not limited to mode described herein.

Referring to shown in Figure 16-Figure 17, the second motor generator 501 and the 3rd motor generator 503 can so cause the center of gravity of power-driven system 100 in center or closer to center with regard to 100 symmetrical distribution of differential mechanism.

Referring to the embodiment of Figure 18-Figure 19, of the power-driven system 1000 in the power-driven system 1000 in the embodiment and Figure 10-Figure 17 embodiments differs primarily in that：The quantity of input shaft.In some 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, second input shaft 102 can also be hollow axle and be set on the first input shaft 101 that three input shafts can be coaxially arranged.Electromotor 301 and the first input shaft 101, it is connected by three clutches 205 between second input shaft 102 and the 3rd input shaft 1003, specifically, three clutches 205 have the first clutch plate 206, second clutch plate 207, 3rd clutch plate 208 and housing 209, housing 209 optionally with the first clutch plate 206, second clutch plate 207, at least one of 3rd clutch plate 208 is engaged, first input shaft 101 is connected with the first clutch plate 206, second input shaft 102 is connected with the second clutch plate 207, 3rd input shaft 1003 is connected with the 3rd clutch plate 208, electromotor 301 is connected with housing 209.In the embodiment of Figure 18, the first clutch plate 206, the second clutch plate 207, the 3rd clutch plate 208 are axially distributed, and in the embodiment of Figure 19, the first clutch plate 206, the second clutch plate 207, the 3rd clutch plate 208 are radially distributed.

The typical condition of power-driven system 1000 according to embodiments of the present invention is briefly described with reference to Figure 10.

For example, first bonding part 201 is engaged with the 3rd bonding part 203, second bonding part 202 is disconnected with the 3rd bonding part 203, the power that now electromotor 301 is produced power is distributed to the driving wheel of both sides by differential mechanism 100 by exporting to differential mechanism 100 after the first input shaft 101, power output shaft 103.

And for example, second bonding part 202 is engaged with the 3rd bonding part 203, first bonding part 201 is disconnected with the 3rd bonding part 203, the power that now electromotor 301 is produced power is distributed to the driving wheel of both sides by differential mechanism 100 by exporting to differential mechanism 100 after the second input shaft 102, power output shaft 103.

For another example, double clutch 204 is all off, and the power that the first motor generator 401 is produced power is distributed to the driving wheel of both sides by differential mechanism 100 by exporting to differential mechanism 100 after the first input shaft 101, power output shaft 103.

For another example, first bonding part 201 is engaged with the 3rd bonding part 203, second bonding part 202 is disconnected with the 3rd bonding part 203, a part of power that now electromotor 301 is produced is exported to the first motor generator 401 by the first input shaft 101, the first motor generator 401 is driven to be generated electricity as motor, another part power of the output of electromotor 301 power is distributed to the driving wheel of both sides by differential mechanism 100 by exporting to differential mechanism 100 after power output shaft 103.

With Figure 10 embodiments, Figure 11 embodiments differ primarily in that the first motor generator 401 is linked with the second input shaft 102, and Figure 10 embodiments are then linked with the first input shaft 101 for the first motor generator 401, for remainder is then repeated no more.

For the embodiment of Figure 12-Figure 14, compared with Figure 10 embodiments, difference is to increased rear-guard differential lock.

Reference picture 12- Figure 14 is simultaneously combined shown in Fig. 1-Fig. 9, and the first gear ring 13 is coaxially connected with the near front wheel 910a with the near front wheel 910a linkages, such as the first gear ring 13, and the second gear ring 23 is linked with off-front wheel 910b, and such as the second gear ring 23 is coaxially connected with off-front wheel 910b.4th motor generator 901 is linked with left rear wheel 910c by gear structure, as the 4th motor generator 901 passes through gear W1, W2, W3, W4 and left rear wheel 910c linkages, gear W1 is coaxial with the 4th motor generator 901 to be connected, gear W1 is engaged with gear W2, gear W2 is coaxially connected with gear W3, gear W3 is engaged with gear W4, and gear W4 can be fixedly installed on left half axle 904, and left rear wheel 910c is provided with left half axle 904.Similarly, 5th motor generator 902 is linked with off hind wheel 910d by gear structure, as the 5th motor generator 902 passes through 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 illustration in fig 12, anti-skidding lock unit 903 is arranged for synchromesh gear W4 and gear X4, and for example anti-skidding lock unit 903 is arranged on gear W4 on and is used for engage gear X4.In the example in figure 13, 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 on and is used for engage gear X1.In the example in figure 14, anti-skidding lock unit 903 is arranged for synchromesh gear W2 and gear X2, and for example anti-skidding lock unit 903 is arranged on gear W2 on and is used for engage gear X2.

In the example of fig. 15, anti-skidding lock unit 903 is arranged for synchronous left half axle 904 and right axle shaft 905, as anti-skidding lock unit 903 is arranged on left half axle 904 and is used to engage right axle shaft 905, in the embodiment, 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 is by synchronous rotary, i.e. at the same speed, rotating Vortex, now left rear wheel 910c and off hind wheel 910d will not differential rotation.And when anti-skidding lock unit 903 is off, 4th motor generator 901 can be operated alone left rear wheel 910c, 5th motor generator 902 can be operated alone off hind wheel 910d, and two trailing wheels are separate, non-interference, so as to realize the differential rotating function of wheel.

In addition, for technical scheme and/or technical characteristic described in the various embodiments described above, do not colliding with each other, in the case of not conflicting, technical scheme and/or technical characteristic in above-described embodiment can be mutually combined by those skilled in the art, technical scheme after combination can be the superposition of two or more technical schemes, the superposition of two or more technical characteristics or two or more technical schemes are superimposed with technical characteristic, thus, it is possible to realize the interaction each other functionally of each technical scheme and/or technical characteristic and support, and the scheme after combining has more superior technique effect.

For example, the first row star-wheel 12 can be combined for the scheme of platy structure by those skilled in the art with 22 partly overlapping scheme of the second planetary gear with the first row carrier 11 and the second planet carrier 21, the axial dimension of differential mechanism 100 can be effectively reduced so, so that the volume of differential mechanism 100 is less.

And for example, the scheme that the first row star-wheel 12 is accommodated in planetary gear and planet carrier in installing space with 22 partly overlapping scheme of the second planetary gear can be combined by those skilled in the art, the axial dimension of differential mechanism 100 not only can be effectively reduced so, and planetary gear and planet carrier can also be made to be hidden in installing space and avoid sudden and violent leakage from being damaged outside, so as to increased service life, maintenance cost is reduced.

For another example, the scheme of the revolution dead in line of revolution axis and second planetary gear 22 of the first row star-wheel 12 can be combined by those skilled in the art with the revolution-radius of the first row star-wheel 12 with the revolution-radius identical scheme of the second planetary gear 22, so that the structure of differential mechanism 100 is compacter, occupancy volume is less, be more convenient for arranging.

For another example, input unit 3 can be configured to annular input end gear and be enclosed within the scheme of retarder driven gearwheel based on the scheme of the outer peripheral face of the first gear ring 13 and the second gear ring 23 and input end gear 3 be combined by those skilled in the art, thus differential mechanism 100 can better profit from the space that master subtracts driven gear inner hollow, realize preferably space availability ratio, it is very easy to the arrangement of differential assembly and the restriction to weight size, and by input unit 3 to be directly disposed as the main reducing gear driven gear of annular, without individually arranging main reducing gear driven gear again, thus the parts of whole power-driven system not only can be reduced, reduces cost, but also make the structure of differential mechanism 100 more compact, it is compact.

For another example; those skilled in the art can by input unit 3 be configured to annular input end gear and input end gear 3 around and cover the scheme in gap and combine; the structure relative compact of differential mechanism 100 is on the one hand caused so; and gap is covered by input end gear 3; the installing space that the housing of two planet circular systems is limited can also be made relatively more closed; the part adequately protected inside installing space, improves its service life.

Certainly, it should be understood that, above-mentioned illustrating is only illustrative, for the combination of technical scheme and/or technical characteristic, those skilled in the art can carry out independent assortment in the case where not conflicting, and the scheme after combining possesses more superior technique effect, the present invention has only made the simple declaration of above-mentioned multiple examples, and here is no longer exhaustive one by one.

Further it will be understood that the technical scheme after combinations thereof equally falls under the scope of the present invention.

Generally speaking，Differential mechanism 100 according to embodiments of the present invention，Being capable of 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%，Axial dimension about reduces 70% simultaneously，The frictional force of bearing can not only be reduced，And the moment of torsion distribution of left and right wheelses can be realized，Make the load distribution of differential mechanism 100 more reasonable，100 rigidity of differential mechanism is more preferably，Additionally due to adopting roller gear，Transmission efficiency is also increased，Traditional Bevel Gear Drive efficiency of such as 6 class precisions and 7 class precisions about 0.97～0.98，And the column gear transmission efficiency of 6 class precisions and 7 class precisions about 0.98～0.99，In addition adopt roller gear，Also reduce the operating noise of differential mechanism 100，Reduce caloric value simultaneously，Substantially increase the life-span of differential mechanism 100.In short, differential mechanism 100 according to embodiments of the present invention have lightweight, small size, low cost, transmission efficiency, many advantages, such as noise is 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 sun gear and can have the advantage that：

Analyze from mechanics, cancel sun gear but differential is realized using gear ring, because it is more that the number of teeth of gear ring compares that sun gear can arrange, while pitch circle larger (pitch circle refers to a pair of circles tangent at node during meshed transmission gear), such that it is able to distributed load more in a balanced way and torque is born, the raising in this life-span to differential mechanism 100 is good.While no sun gear, lubrication and the cooling of differential mechanism 100 can preferably be realized, that is, due to eliminating sun gear, therefore cavity can be formed inside planetary gear, and gear ring engages the relation (sun gear belongs to external toothing with planetary gear) for being belonging to internal messing with planetary gear, lubricating oil in gear ring, can be stored, thus cooling and lubricant effect can be greatly improved.Further, since cancelling sun gear, parts are reduced, the quality and cost of differential mechanism 100 is reduced, makes differential mechanism 100 become more miniaturization, 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-driven system 1000 is particularly well-suited to new energy vehicle, as the power assembly of new energy vehicle is typically located in enging cabin, power assembly not only has variator, electromotor, also there is at least one motor simultaneously, due to enging cabin limited space, therefore advantage can spatially be obtained using compact differential mechanism 100 according to embodiments of the present invention, easily facilitate arrangement.And for example, as a example by the advantage for going up in a driving manner, as the axial dimension of differential mechanism 100 according to embodiments of the present invention greatly reduces, therefore axial space is more preferably arranged, and there are differential mechanism 100 two gear rings can be better achieved and the power connector of two motors (as mentioned above is connected motor by the external tooth of gear ring) as clutch end, and this is difficult on traditional circular cone differential mechanism.

Vehicle 10000 according to embodiments of the present invention is briefly described below, as shown in figure 20, the vehicle 10000 includes the power-driven system 1000 in above-described embodiment, and 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 other construction such as brakes, driving system, steering etc. of vehicle 10000 according to embodiments of the present invention have been prior art, and it is well known to those skilled in the art, therefore no longer repeats one by one here.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specific example ", or the description of " some examples " etc. mean that the specific features, structure, material or the feature that describe with reference to the embodiment or example are contained at least one embodiment or example of the present invention.In this manual, 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 combined in one or more any embodiment or example in an appropriate manner.Additionally, the different embodiments or example described in this specification can be engaged and be combined by those skilled in the art.

Although embodiments of the invention have been shown and described above, it is understandable that, above-described embodiment is exemplary, it is impossible to be interpreted as limitation of the present invention, and one of ordinary skill in the art can be changed to above-described embodiment within the scope of the invention, change, replacing and modification.

Claims (23)

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；

Power output shaft, the power output shaft are arranged to link with the input unit；

Multiple input shafts, each described input shaft are arranged to link with the power output shaft；

One of them in first motor generator, first motor generator and the plurality of input shaft is defeated Enter axle linkage.

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 also include：Electromotor, The electromotor is arranged to be selectively engageable at least one of the plurality of input shaft.

12. power-driven systems according to claim 1, it is characterised in that the power output shaft On be provided with power output shaft output gear, the power output shaft output gear engages biography with the input unit It is dynamic.

13. power-driven systems according to claim 12, 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.

14. power-driven systems according to claim 1, it is characterised in that the input shaft and institute State.

15. power-driven systems according to claim 14, 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.

16. power-driven systems according to claim 15, it is characterised in that the plurality of input Axle includes：

First input shaft and the second input shaft, second input shaft are set on first input shaft, institute Stating fixed driving gear includes：The first fixation driving gear for being fixed on the first input shaft and it is fixed on the The second fixation driving gear on two input shafts, the fixed driven gear include：It is fixed on the power defeated The first fixation driven gear and second on shaft fixes driven gear, and described first fixes driven gear and institute The engagement of the first fixation driving gear is stated, the second fixation driven gear is nibbled with the described second fixation driving gear Close.

17. power-driven systems according to claim 16, it is characterised in that also include：

Electromotor；And

Double clutch, the double clutch include：First junction surface, the second junction surface and the 3rd junction surface, 3rd junction surface is arranged to be selectively engageable in first junction surface and second junction surface At least one, the electromotor is connected with the 3rd junction surface, first input shaft and described first Junction surface is connected, and second input shaft is connected with second junction surface.

18. power-driven systems according to claim 16, it is characterised in that described first is electronic Electromotor fixes driving gear or second fixation driving gear linkage with described first by gear structure.

19. power-driven systems according to claim 1, it is characterised in that also include：

Second motor generator and the 3rd motor generator, second motor generator and first gear ring Linkage, the 3rd motor generator are linked with second gear ring.

20. power-driven systems according to claim 19, it is characterised in that first gear ring Outer peripheral face on be provided with the first external tooth, the second external tooth is provided with the outer peripheral face of second gear ring, it is described Second motor generator is linked with first external tooth, and the 3rd motor generator is joined with second external tooth It is dynamic.

21. 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.

22. 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.

23. a kind of vehicles, it is characterised in that include dynamic according to any one of claim 1-22 Power-driven system.